Combined net type decontamination filter

Abstract

The utility model relates to a filter, and particularly discloses a combined net type decontamination filter. The device comprises a cylinder, a secondary vertical filter screen is arranged in the cylinder, a primary filter screen is arranged at the lower end, and the lower end of the secondary vertical filter screen is connected with the inner wall of the cylinder through an annular plugging plate; and the primary filter screen is a split filter screen. The primary filter screen is parallel to the flowing direction of sewage from the water inlet pipe, so that the impact of water flow on the primary filter screen is reduced, and the primary filter screen is more convenient to disassemble, assemble, maintain and clean due to the split design; the secondary filter screen is responsible for filtering relatively fine impurities in sewage, and the secondary filter screen is in threaded connection with the flange opening, so that the secondary filter screen can be pulled out after the flange opening is detached, and the secondary filter screen is convenient to clean.

Description

Technical Field

[0001] The utility model relates to a filter, in particular to a combined net type decontamination filter. Background Art

[0002] With the development demand of centralized heating and the full utilization of energy, the utilization of waste heat from large thermal power plants, that is, long-distance pipeline heating, is developing rapidly and moving forward. During the construction of the long-distance heating pipeline, construction waste and unexpected debris will fall into the pipeline. These debris accumulate in the official website. During operation, many lightweight garbage and debris cannot be discharged, affecting normal heating and damaging equipment. Therefore, filters are needed for water treatment. The water treatment filter devices currently used generally have the water flow directly impacting the first filter. The first filter is greatly impacted by the water flow, and the filter is easily damaged, affecting the filtering effect. At the same time, the debris filtered out of the filter is difficult to clean. Summary of the invention

[0003] In order to make up for the defects of the prior art, the utility model provides a combined net type dirt removal filter which has a long service life and is convenient for cleaning dirt.

[0004] The utility model is realized through the following technical solutions:

[0005] A combined mesh-type pollution-removing filter comprises a cylinder body, the cylinder body is provided with a manhole, a water inlet pipe and a water outlet pipe, the water inlet pipe is at the bottom and the water outlet pipe is at the top, and the characteristic is that: a flange is provided at the upper end of the cylinder body, a secondary vertical filter screen is provided in the cylinder body, the upper end of the secondary vertical filter screen is detachably connected to the flange, an annular sealing plate is provided on the inner wall of the cylinder body, an annular groove is provided on the inner circle of the annular sealing plate, and the lower end of the secondary vertical filter screen is inserted into the annular groove; a split primary filter screen is provided at the lower end of the secondary vertical filter screen; the primary filter screen is composed of a plurality of sub-filter screens, a plurality of plug-in grooves are provided on the annular sealing plate, wherein the middle plug-in groove is a bidirectional plug-in groove, the sub-filter screen is matched with the plug-in groove and is fixedly connected to the annular sealing plate by fasteners; the water inlet pipe and the manhole are both located below the primary filter screen.

[0006] The upper part of the annular groove is trumpet-shaped.

[0007] The flange opening is provided with a threaded pipe, and the secondary vertical filter screen is threadedly connected to the threaded pipe.

[0008] The secondary vertical filter screen is formed by threaded connection of a plurality of separate filter cartridges.

[0009] A lower sewage pipe is arranged at the lower end of the cylinder.

[0010] The beneficial effects of the utility model are:

[0011] The primary filter of the utility model is parallel to the flow direction of sewage coming in from the water inlet pipe, thus reducing the impact of the water flow on the primary filter, and the split design of the primary filter makes disassembly, assembly, maintenance and cleaning more convenient; the secondary filter is responsible for filtering relatively fine impurities in the sewage, and the secondary filter is connected to the flange port by a threaded connection. After removing the flange port, the secondary filter can be pulled out for easy cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0016] Figure 4 Schematic diagram of the top view of the annular blocking plate;

[0017] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the BB direction.

[0018] In the figure, 1 is a cylinder, 2 is a water inlet pipe, 3 is a water outlet pipe, 4 is a valve, 5 is a lower sewage pipe, 6 is a secondary vertical filter screen, 7 is a manhole, 8 is a plug-in slot, 9 is a sub-filter screen, 10 is an annular sealing plate, 11 is a fastener, 12 is an annular groove, 13 is a flange port, and 14 is a threaded pipe. DETAILED DESCRIPTION

[0019] The accompanying drawings are specific embodiments of the present utility model. Figures 1 to 5 As shown, the combined mesh decontamination filter comprises a vertical cylinder 1, a water inlet pipe 2 is installed at the lower part of the cylinder 1, a water outlet pipe 3 is installed at the upper part, a lower sewage pipe 5 is installed at the lower end of the cylinder 1, and a valve 4 is installed on the lower sewage pipe 5.

[0020] A flange 13 is installed at the upper end of the cylinder 1, and the flange 13 can be removed. A threaded pipe 14 is welded at the lower end of the flange 13, and the threaded pipe 14 is threadedly connected to the secondary vertical filter screen 6. The secondary vertical filter screen 6 is preferably formed by threading a plurality of separate filter cartridges.

[0021] The lower end of the secondary vertical filter screen 6 is surrounded by an annular sealing plate 10, which is connected to the inner wall of the cylinder 1 to prevent sewage from being discharged directly without being filtered.

[0022] The inner circle of the annular blocking plate 10 is a circle of annular grooves 12, and the lower end of the secondary vertical filter screen 6 is inserted into the arc groove.

[0023] The cross section of the upper portion of the annular groove 12 is preferably in the shape of a bell mouth.

[0024] The lower end of the secondary vertical filter 6 is the primary filter, which is split and consists of several sub-filters 9: several plug-in slots 8 are installed at the lower end of the annular sealing plate 10, among which the middle part of the plug-in slots 8 are bidirectional plug-in slots 8, and the sub-filters 9 are inserted between two adjacent plug-in slots 8 and fixed to the annular sealing plate 10 with fasteners 11.

[0025] A manhole 7 is arranged on the cylinder 1, wherein the water inlet pipe 2 and the manhole 7 are located below the primary filter screen, and the water outlet pipe 3 is located above the primary filter screen.

[0026] The working process is as follows: during the operation of the utility model, sewage enters from the water inlet pipe 2. Since the plane of the primary filter is parallel to the direction of water flow, the water flow will not cause a strong impact on the primary filter, thereby reducing the impact damage of the primary filter and extending the service life. After the large debris and impurities are filtered through the primary filter, the sewage enters the secondary vertical filter 6 and is discharged from the outlet pipe 3 after filtration. When the filter needs to be cleaned, the utility model stops running, and the maintenance worker enters from the manhole 7 to remove the primary filter for cleaning. After removing the flange 13 and lifting it up to a certain height, hold the secondary vertical filter 6, remove the flange 13, and lift the secondary vertical filter 6 upward until a separate filter cartridge is completely separated from the cylinder body 1, remove the separate filter cartridge, and then remove the other separate filter cartridges in the same way until all the separate filter cartridges are lifted up for cleaning.

[0027] Except for the technical features described in the specification, the other technical features are known technologies to those skilled in the art.

Claims

1. A combined net-type decontamination filter, comprising a cylinder (1), wherein the cylinder (1) is provided with a manhole (7), a water inlet pipe (2) and a water outlet pipe (3), wherein the water inlet pipe (2) is at the bottom and the water outlet pipe (3) is at the top, and wherein: A flange opening (13) is provided at the upper end of the cylinder (1), a secondary vertical filter screen (6) is provided in the cylinder (1), the upper end of the secondary vertical filter screen (6) and the flange opening (13) are detachably connected, an annular sealing plate (10) is provided on the inner wall of the cylinder (1), an annular groove (12) is provided on the inner ring of the annular sealing plate (10), and the lower end of the secondary vertical filter screen (6) is inserted into the annular groove (12); a split primary filter screen is provided at the lower end of the secondary vertical filter screen (6); the primary filter screen is composed of a plurality of sub-filter screens (9), a plurality of plug-in grooves (8) are provided on the annular sealing plate (10), wherein the middle plug-in groove (8) is a bidirectional plug-in groove (8), the sub-filter screen (9) is matched with the plug-in groove (8) and is fixedly connected to the annular sealing plate (10) through a fastener (11); the water inlet pipe (2) and the manhole (7) are both located below the primary filter screen.

2. The combined net type decontamination filter according to claim 1 is characterized in that: The upper portion of the annular groove (12) is trumpet-shaped.

3. The combined net type decontamination filter according to claim 1 is characterized in that: The flange opening (13) is provided with a threaded pipe (14), and the secondary vertical filter screen (6) is threadably connected to the threaded pipe (14).

4. The combined net type decontamination filter according to claim 1 is characterized in that: A lower sewage pipe (5) is provided at the lower end of the cylinder (1).

5. The combined net type decontamination filter according to claim 1 is characterized in that: The secondary vertical filter screen (6) is formed by a plurality of separate filter cartridges connected by threads.

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