Screening device for preventing pipeline from being blocked by dust

Abstract

The utility model relates to the technical field of pipeline screening, and discloses a screening device for preventing a pipeline from clogging, which comprises a screening cylinder, a water inlet pipe is arranged at the right end of the bottom of the screening cylinder, a water outlet pipe is arranged at the left end of the bottom of the screening cylinder, and a top cover is arranged at the top of the bottom of the screening cylinder. The top end of the screening cylinder and the top cover are fixedly connected through a plurality of connecting bolts, filter element supporting rings are fixedly arranged on the bottom face of the top cover and the pipe wall of the top end of the water outlet pipe, filter elements are fixedly arranged between the filter element supporting rings, the filter elements are formed by winding metal nets, and filter element frameworks are arranged on the circumferential inner walls of the filter elements. A plurality of uniformly distributed filter holes are reserved in the side wall of the filter element framework. Compared with the prior art, the pipeline screening structure has the advantages that after being intercepted outside the filter element, impurities, dust and particles are continuously scoured by water flow to fall down and finally precipitate at the inner bottom of the screening barrel, dust and impurities in liquid are effectively prevented from blocking the pipeline screening structure, and the accumulated dust and impurities can be cleaned through the pollution discharge plug.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline screening, in particular to a screening device for preventing pipeline from being blocked by ash. Background Art

[0002] Screening devices to prevent pipe blockage are usually used to process fluids or powders to prevent solid particles or other impurities from blocking the pipes or damaging the equipment when flowing through the pipes. In the sewage treatment process, it is often necessary to treat sewage containing a large amount of solid particles or other impurities. Screening devices can be used to filter and separate these solid particles to prevent them from blocking the treatment equipment or polluting the environment.

[0003] Existing pipeline screening and filtering devices are usually equipped with filter screens and filter plates with fine filter holes to filter out dust and impurities in the water flow. However, after long-term use, dust and impurities will accumulate on the filter plates and filter screens and cannot fall off by themselves until the filter holes are blocked. Dust and impurities are difficult to remove, which greatly reduces the filtering efficiency of the screening mechanism. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The technical problem to be solved by the utility model is that the existing pipeline screening and filtering device is usually provided with a filter screen and a filter plate with fine filter holes to filter and remove dust impurities in the water flow. However, after long-term use, the dust impurities will accumulate on the filter plate and the filter screen and cannot fall down by themselves until the filter holes are blocked. The dust impurities are difficult to remove, which greatly reduces the filtering efficiency of the screening mechanism.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is as follows:

[0008] A screening device for preventing dust blockage in pipelines, comprising a screening cylinder, a water inlet pipe is arranged at the right end of the bottom of the screening cylinder, a water outlet pipe is arranged at the left end, a top cover is arranged at the top, and the screening cylinder also comprises a filter element support ring, a filter element, a filter element frame, a sewage plug, a sewage pipe, a pressure relief joint, a pressure relief nut, and a connecting bolt;

[0009] The right end of the water outlet pipe is bent upward and connected to the screening cylinder. The top of the screening cylinder and the top cover are connected and fixed by a plurality of connecting bolts. The bottom surface of the top cover and the top wall of the water outlet pipe are fixed with filter element support rings. A filter element is fixed between the filter element support rings. The filter element is formed by winding a metal mesh. A filter element skeleton is provided on the circumferential inner wall of the filter element. A plurality of evenly distributed filter holes are reserved on the side wall of the filter element skeleton.

[0010] A pressure relief hole is reserved on the top cover, a pressure relief joint is threadedly connected to the pressure relief hole, a pressure relief nut is threadedly connected to the outer wall of the top of the pressure relief joint, a sewage pipe is arranged at the bottom of the screening cylinder, and a sewage plug is threadedly connected to the sewage pipe.

[0011] As an improvement, the right end of the water inlet pipe and the left end of the water outlet pipe are both provided with connecting flanges.

[0012] As an improvement, the filter element support ring is provided with a mounting groove, and an annular filter element sealing gasket is arranged in the mounting groove.

[0013] As an improvement, an annular gasket is provided at the connection between the top cover and the screening cylinder.

[0014] As an improvement, a plurality of connecting bolts are arranged in an annular distribution, and fixing nuts are threadedly connected to the top ends of the connecting bolts.

[0015] As an improvement, a direction indicator is provided on the front wall of the screening cylinder, and the direction indicator points to the left.

[0016] (III) Beneficial effects

[0017] The advantages of the utility model compared with the prior art are:

[0018] The liquid that enters the screening cylinder from the water inlet pipe will be blocked outside the filter element when passing through the filter element and the filter element frame. After the filtered liquid enters the screening cylinder, it is discharged after passing through the water outlet pipe. After the impurity dust particles are blocked outside the filter element, they are continuously washed down by the water flow and finally settled at the bottom of the screening cylinder, which effectively prevents the dust impurities in the liquid from blocking the pipeline screening structure, and the accumulated dust impurities can be cleaned through the sewage plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the appearance of the utility model.

[0020] Figure 2 It is a schematic diagram of the component composition of the utility model.

[0021] Figure 3 It is a partial structural cross-sectional schematic diagram of the utility model.

[0022] Figure 4 It is a cross-sectional schematic diagram of some components of the utility model.

[0023] Figure 5 This utility model Figure 3 A partial enlarged schematic diagram of the structure.

[0024] As shown in the figure: 1. Screening cylinder; 2. Water inlet pipe; 3. Water outlet pipe; 4. Top cover; 5. Filter element support ring; 6. Filter element; 7. Filter element frame; 8. Drain plug; 9. Drain pipe; 10. Pressure relief joint; 11. Pressure relief nut; 12. Connecting bolt; 13. Filter hole; 14. Connecting flange; 15. Filter element sealing gasket; 16. Gasket; 17. Direction indicator. DETAILED DESCRIPTION

[0025] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1

[0028] Please refer to the attached Figure 1 To Attachment Figure 5 As shown, a screening device for preventing dust blockage in pipelines comprises a screening drum 1, a direction mark 17 is arranged on the front wall of the screening drum 1, the direction mark 17 points to the left, a water inlet pipe 2 is arranged at the right end of the bottom of the screening drum 1, a water outlet pipe 3 is arranged at the left end, a top cover 4 is arranged at the top, a connecting flange 14 is arranged at the right end of the water inlet pipe 2 and the left end of the water outlet pipe 3, the right end of the water outlet pipe 3 is bent upward and connected to the screening drum 1, the top of the screening drum 1 and the top cover 4 are connected and fixed by connecting bolts 12, and the connecting bolts 12 are arranged in a ring with a plurality of A fixing nut is threadedly connected to the top of the connecting bolt 12, an annular gasket 16 is provided at the connection between the top cover 4 and the screening cylinder 1, a filter element support ring 5 is fixedly provided on the bottom surface of the top cover 4 and the top tube wall of the water outlet pipe 3, the filter element support ring 5 is reserved with an installation groove, an annular filter element sealing gasket 15 is provided in the installation groove, a filter element 6 is fixedly provided between the filter element support rings 5, the filter element 6 is formed by winding a metal mesh, a filter element skeleton 7 is provided on the circumferential inner wall of the filter element 6, and a plurality of evenly distributed filter holes 13 are reserved on the side wall of the filter element skeleton 7.

[0029] A pressure relief hole is reserved on the top cover 4, a pressure relief joint 10 is threadedly connected to the pressure relief hole, a pressure relief nut 11 is threadedly connected to the outer wall of the top end of the pressure relief joint 10, a sewage pipe 9 is provided at the bottom end of the screening cylinder 1, and a sewage plug 8 is threadedly connected to the sewage pipe 9.

[0030] Through the above structure, the liquid entering the screening cylinder 1 from the water inlet pipe 2 will be blocked by impurity particles outside the filter element 6 when passing through the filter element 6 and the filter element frame 7. After the liquid after screening and filtering enters the screening cylinder 1, it is discharged after passing through the water outlet pipe 3. After the impurity dust particles are intercepted outside the filter element 6, they are continuously washed down by the water flow and finally settled at the bottom of the screening cylinder 1, which effectively prevents the dust impurities in the liquid from blocking the pipeline screening structure, and the accumulated dust impurities can be cleaned through the sewage plug 8.

[0031] During the specific implementation of the utility model: when it is necessary to screen and filter the dust and impurities in the liquid in the pipeline, the flange connection plate 14 at the right end of the water inlet pipe 2 is connected to the water pipe, and the liquid entering the screening cylinder 1 from the water inlet pipe 2 will be blocked outside the filter element 6 when passing through the filter element 6 and the filter element frame 7. After the screened and filtered liquid enters the screening cylinder 1, it is discharged after passing through the outlet pipe 3. After the impurity dust particles are intercepted outside the filter element 6, they are continuously washed down by the water flow and finally deposited at the bottom of the screening cylinder 1. When it is necessary to relieve the pressure inside the screening cylinder 1, loosen the pressure relief nut 11, reduce the pressure inside the screening cylinder 1 to a suitable strength through the pressure relief joint 10, and then tighten the pressure relief nut 11. When it is necessary to clean the dust and impurity particles deposited at the bottom of the screening cylinder 1, open the sewage plug 8 to discharge the dust and impurity particles out of the screening cylinder 1.

[0032] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A screening device for preventing dust blockage in pipelines, comprising a screening drum (1), wherein the right end of the bottom of the screening drum (1) is provided with a water inlet pipe (2), the left end is provided with a water outlet pipe (3), and the top is provided with a top cover (4), characterized in that: It also includes a filter element support ring (5), a filter element (6), a filter element frame (7), a sewage discharge plug (8), a sewage discharge pipe (9), a pressure relief joint (10), a pressure relief nut (11), and a connecting bolt (12); The right end of the water outlet pipe (3) is bent upward and connected to the inside of the screening cylinder (1); the top of the screening cylinder (1) and the top cover (4) are connected and fixed by a plurality of connecting bolts (12); a filter element support ring (5) is fixedly provided on the bottom surface of the top cover (4) and the top tube wall of the water outlet pipe (3); a filter element (6) is fixedly provided between the filter element support rings (5); the filter element (6) is formed by winding a metal mesh; a filter element frame (7) is provided on the circumferential inner wall of the filter element (6); and a plurality of evenly distributed filter holes (13) are reserved on the side wall of the filter element frame (7); A pressure relief hole is reserved on the top cover (4), a pressure relief joint (10) is threadedly connected to the pressure relief hole, a pressure relief nut (11) is threadedly connected to the outer wall of the top end of the pressure relief joint (10), a sewage pipe (9) is provided at the bottom end of the screening cylinder (1), and a sewage plug (8) is threadedly connected to the sewage pipe (9).

2. A screening device for preventing pipeline clogging according to claim 1, characterized in that: The right end of the water inlet pipe (2) and the left end of the water outlet pipe (3) are both provided with connecting flanges (14).

3. A screening device for preventing pipeline clogging according to claim 1, characterized in that: The filter element support ring (5) is provided with a mounting groove, and an annular filter element sealing gasket (15) is arranged in the mounting groove.

4. A screening device for preventing pipeline clogging according to claim 1, characterized in that: An annular gasket (16) is provided at the connection between the top cover (4) and the screening drum (1).

5. The screening device for preventing pipeline clogging according to claim 1 is characterized in that: A plurality of connecting bolts (12) are arranged in an annular distribution, and a fixing nut is threadedly connected to the top of the connecting bolts (12).

6. A screening device for preventing pipeline clogging according to claim 1, characterized in that: A direction mark (17) is provided on the front wall of the screening cylinder (1), and the direction mark (17) points to the left.

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