Anti-blocking chilling water filter

Abstract

The utility model relates to an anti-blocking chilled water filter and belongs to the technical field of coal chemical equipment. The filter comprises a cylindrical barrel, a filter screen barrel is coaxially arranged in the barrel, a water inlet and a water outlet are formed in the two sides of the lower portion of the barrel respectively, the bottom of the filter screen barrel is open, the top of the filter screen barrel is closed, and the bottom opening of the filter screen barrel is communicated with one side of the water inlet of the barrel and isolated from one side of the water outlet of the barrel. The filter designed by the utility model can be used for efficiently filtering the chilling water of the gasification furnace, so that the problem that the traditional chilling water filter is easy to block is avoided, and the recycling efficiency of the chilling water is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal chemical equipment technology, specifically to an anti-clogging quench water filter. Background Technology

[0002] The gasifier is the most important production equipment in coal chemical production, and the quench water plays a crucial cooling role in the gasifier's operation. The quench water discharged from the gasifier after cooling contains a large amount of coal slag, also known as black water. After intermediate treatment, it enters the black water treatment unit, where flocculants are added for sedimentation, followed by filtration using a vacuum filter. The coal slag is discharged, and the water is recycled as quench water. Black water, as a vital medium in the quench water process, enters the quench ring flange through the quench water pipeline, then flows out through the annular gap between the quench ring and the downcomer, forming a uniform water film on the inner wall of the downcomer. The high-temperature gas and coal slag from combustion in the gasifier combustion chamber enter the quench chamber through the slag outlet and downcomer, where they are cooled from 1000℃ to approximately 200℃ by the quench water. In this process, the quench water plays a vital role; the formation of a uniform water film through the quench ring is a prerequisite for ensuring the long-term operation of the equipment. The structure and working principle of the quench ring require that the quench water entering the gasifier must not contain large ash, slag, or foreign matter. Otherwise, if the gaps in the quench ring become blocked, it will affect the stable long-term operation of the gasifier. To ensure that the black water entering the gasifier meets the process requirements and to prevent foreign matter from entering the quench ring, the black water must be filtered through a quench water filter before entering the gasifier.

[0003] Currently, most companies use internal filtration devices in their quench water filters. These devices consist of several steel pipes with numerous fine holes drilled into them. The black water entering the filter passes through these holes and then enters the cylinder before exiting through the outlet into the gasifier's quench ring. Because the black water contains a large number of solid particles, scale, and other impurities, the fine holes in the steel pipes often become clogged, affecting the system's stable operation. Summary of the Invention

[0004] To address the problems in the existing technology, this utility model patent designs an anti-clogging quench water filter to solve the problem that existing quench water filters are prone to clogging during use.

[0005] The technical solution adopted by this utility model is as follows: the filter includes a cylindrical body, a filter screen is coaxially arranged inside the body, an inlet and an outlet are respectively arranged on the lower two sides of the body, the bottom of the filter screen is open and the top is closed, the bottom opening of the filter screen is connected to the inlet side of the body and isolated from the outlet side.

[0006] Furthermore, the bottom opening of the filter screen cylinder is slanted, and the slanted opening of the filter screen cylinder faces the water inlet side of the cylinder body.

[0007] Furthermore, an elliptical fixing ring is inclinedly provided on the lower inner side of the cylinder. The high point of the fixing ring is located above the water inlet of the cylinder, and the low point is located below the water outlet. An elliptical connecting ring is fixedly connected to the inclined end of the bottom of the filter screen cylinder. The connecting ring and the fixing ring have corresponding mounting holes, and the two are fixedly connected by bolts.

[0008] Furthermore, four connecting seats are symmetrically welded to the middle of the inner side of the cylinder wall. Each connecting seat has a pull rod fixed upward along the axial direction. An angle steel cross is provided at the top of the filter screen cylinder. A cover plate is provided on the lower side of the angle steel cross to close the top of the filter screen cylinder. The four ends of the angle steel cross have through holes. The pull rods of the four connecting seats pass through the four through holes of the angle steel cross and are fixed by nuts.

[0009] Furthermore, a drain port is provided at the bottom of the cylinder and a control valve is connected to it.

[0010] Furthermore, multiple connecting ribs are symmetrically arranged at the joint between the bevel of the filter cylinder and the connecting ring.

[0011] Compared to existing technologies, the advancements of this patented anti-clogging quench water filter lie in the following: The anti-clogging quench water filter uses a filter screen cylinder instead of the traditional finely perforated steel pipe, increasing the contact area between the black water and the filter element, significantly improving the filtration efficiency of the black water. Furthermore, the filter screen cylinder is less prone to clogging, ensuring the normal operation of the filter. Black water enters through the bottom opening of the filter screen cylinder, and large particles and impurities in the black water are filtered and retained at the bottom of the cylinder, allowing for periodic discharge from the drain port at the bottom of the cylinder, facilitating filter cleaning and maintenance. The filter screen cylinder is installed and fixed inside the cylinder using structures such as fixing rings, connecting seats, pull rods, and angle steel crosses, ensuring the stability of the filter screen cylinder. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the vertical cross-sectional structure of an anti-clogging chilled water filter.

[0013] In the diagram, 1 is the cylinder, 2 is the filter screen cylinder, 3 is the angle steel cross, 4 is the cover plate, 11 is the water inlet, 12 is the water outlet, 13 is the sewage outlet, 14 is the fixing ring, 15 is the connecting seat, 16 is the tie rod, 21 is the connecting ring, and 22 is the connecting stiffener. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0015] like Figure 1 As shown, this utility model patent designs an embodiment of an anti-clogging quench water filter. In this embodiment, the filter includes a cylindrical body 1, the top and bottom of which are hemispherical, and a filter screen 2 is coaxially arranged inside. The lower part of the body 1 has symmetrically arranged inlet 11 and outlet 12 on both sides, and a drain outlet 13 at the bottom. Inlet 11 connects to the outlet pipeline of the black water treatment, outlet 12 connects to the inlet pipeline of the gasifier quench water, and drain outlet 13 connects to the control valve and the drain pipeline. An elliptical fixing ring 14 is inclinedly arranged on the lower inner side of the body 1. The high point of the fixing ring 14 is located above the inlet 11 of the body 1, and the low point is located below the outlet 12. It is fully welded to the inner wall of the body 1 for fixation. Four connecting seats 15 are symmetrically welded to the middle of the inner side of the cylinder wall of the cylinder body 1. Each connecting seat 15 is fixed with a tie rod 16 along the axial direction. The upper section of the tie rod 16 is provided with external thread, and its height exceeds that of the filter screen cylinder 2.

[0016] The filter cylinder 2 is a cylindrical structure made of metal filter mesh, with a diameter smaller than the inner diameter of the cylinder body 1. The bottom opening of the filter cylinder 2 is beveled, and the angle of inclination of the bevel is the same as the angle of inclination of the fixing ring 14 set in the cylinder body 1, so as to ensure that the filter cylinder 2 can be coaxially installed in the cylinder body 1. An elliptical connecting ring 21 is welded to the end of the bevel, and four connecting ribs 22 are symmetrically arranged at the connection point to enhance stability. The inner circle size of the fixing ring 14 is the same as the inner circle size of the connecting ring 21, and each of them has four evenly distributed mounting holes, which are connected and fixed by bolts passing through the mounting holes. After installation, the bevel at the bottom of the filter cylinder 2 faces the water inlet 11 of the cylinder body 1 and is completely isolated from the water outlet 12.

[0017] An angle steel cross 3 is installed at the top of the filter cylinder 2, and a cover plate 4 is installed on the lower side of the angle steel cross 3, which closes the top of the filter cylinder 2. The outer end of the angle steel cross 3 extends beyond the outer diameter of the filter cylinder 2, and there are through holes at each of the four ends. The top ends of the four tie rods 16 inside the cylinder 1 pass upward through the four through holes of the angle steel cross 3 and are tightened and fixed by nuts.

[0018] In the application of the anti-clogging quench water filter disclosed in this utility model patent, the treated black water from the gasifier enters the cylinder 1 through the inlet 11 and passes upward through the filter screen cylinder 2. The filter screen cylinder 2 filters out the impurities remaining in the wastewater, and the filtered black water is discharged from the outlet 12 and sent as quench water to the quench ring of the gasifier. The impurities filtered out inside the cylinder 1 remain at the bottom of the cylinder 1 and are periodically cleaned and discharged through the drain outlet 13.

[0019] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the present invention.

Claims

1. A clog-resistant chilled water filter, characterized in that, The filter includes a cylindrical body with a filter screen cylinder coaxially arranged inside. The diameter of the filter screen cylinder is smaller than the diameter of the body. An inlet and an outlet are respectively provided on the lower two sides of the body. The bottom of the filter screen cylinder is open and the top is closed. The bottom opening of the filter screen cylinder is connected to the inlet side of the body and isolated from the outlet side.

2. The anti-clogging chilled water filter according to claim 1, characterized in that, The bottom opening of the filter screen cylinder is at an angle, and the angled opening of the filter screen cylinder faces the water inlet side of the cylinder body.

3. The anti-clogging chilled water filter according to claim 2, characterized in that, An elliptical fixing ring is inclinedly arranged on the lower inner side of the cylinder. The inclination angle of the fixing ring is the same as the inclination angle of the inclined opening at the bottom of the filter screen cylinder, and it is fixedly connected to the inclined opening at the bottom of the filter screen cylinder. The high point of the inclination of the fixing ring is located above the water inlet of the cylinder, and the low point is located below the water outlet.

4. A clog-resistant chilled water filter according to claim 3, characterized in that, An elliptical connecting ring is fixedly connected to the beveled end at the bottom of the filter cylinder. The connecting ring and the fixed ring have corresponding mounting holes, and the two are connected and fixed by bolts passing through the mounting holes.

5. A clog-resistant chilled water filter according to claim 4, characterized in that, Four connecting seats are symmetrically welded to the middle of the inner side of the cylinder wall. Each connecting seat has a pull rod fixed upward along the axial direction. An angle steel cross is provided at the top of the filter screen cylinder. A cover plate is provided on the lower side of the angle steel cross to close the top of the filter screen cylinder. The four ends of the angle steel cross have through holes. The pull rods of the four connecting seats pass through the four through holes of the angle steel cross and are tightened and fixed by nuts.

6. A clog-resistant chilled water filter according to claim 5, characterized in that, The bottom of the cylinder is hemispherical, and a drain port with a control valve is connected to the bottom of the cylinder.

7. A clog-resistant chilled water filter according to claim 6, characterized in that, Multiple connecting ribs are symmetrically arranged at the joint between the bevel of the filter cylinder and the connecting ring.

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