Power plant circulating water pump inlet filtering device

Abstract

The utility model discloses a power plant circulating water pump inlet filtering device which comprises a water pump butt joint pipe, a primary filtering net plate and a secondary filtering net plate, the primary filtering net plate is arranged on the left side of an inner cavity of the water pump butt joint pipe, and the secondary filtering net plate is arranged in the middle of the inner cavity of the water pump butt joint pipe. Through cooperative use of the primary filter screen plate, the secondary filter screen plate and the end filtering conical cover, after the whole device is in butt joint with a water inlet of a water pump or a pipeline at the water inlet of the water pump, water pumped by the water pump is filtered layer by layer through the three filtering structures, and the strength of filtering and purifying water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump filtration, in particular to an inlet filtration device for a circulating water pump in a power plant. Background Art

[0002] When a power plant generates thermal electricity, water needs to be circulated repeatedly in the system. During the circulation process, impurities may be present in the water, which may affect the efficiency of power generation, so the water source needs to be filtered.

[0003] When the filter device filters a large amount of impurities and thus blocks the water pump, the filter device needs to be cleaned. At present, the filter device generally adopts an internal filter screen, which is not convenient for cleaning the inside of the filter device, and the cleaning is more troublesome and inconvenient to use. Utility Model Content

[0004] The utility model aims to provide an inlet filtering device for a circulating water pump of a power plant to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a power plant circulating water pump inlet filter device, including a water pump butt joint pipe, a primary filter screen plate and a secondary filter screen plate, the primary filter screen plate is arranged on the left side of the inner cavity of the water pump butt joint pipe, and the secondary filter screen plate is arranged in the middle of the inner cavity of the water pump butt joint pipe.

[0006] Preferably, an end filter cone cover is provided on the left side of the water pump butt joint.

[0007] Preferably, water flow arc holes are opened at equal distances on the side surface of the primary filter screen plate, and threaded mounting holes are opened at equal distances in the middle of the outer ring of the primary filter screen plate.

[0008] Preferably, water filtering holes are provided on the side of the secondary filter screen plate.

[0009] Preferably, a sewage cone is provided on the side surface of the primary filter screen plate, a sewage blocking strip is provided on the left side surface of the secondary filter screen plate, a limiting shaft is fixedly installed at an equal distance on the right side surface of the primary filter screen plate, a spring is mounted on the outer ring of the limiting shaft, and the right side of the spring is fixedly connected to the outer wall of the limiting shaft, and the other side of the spring is fixedly connected to the side surface of the secondary filter screen plate.

[0010] Preferably, a sewage outlet is provided on the right side of the bottom of the inner wall of the water pump butt joint, and the sewage outlet is funnel-shaped. An external sewage pipe is provided below the sewage outlet, and the top of the external sewage pipe is fixedly connected to the outer wall of the water pump butt joint.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The circulating water pump inlet filtration device of the power plant is used in conjunction with the primary filter screen, the secondary filter screen and the end filter cone cover. When the entire device is connected to the water inlet of the water pump or the pipeline at the water inlet of the water pump, the water flow pumped by the water pump passes through the above three filter structures layer by layer, which improves the filtering and purification of water.

[0013] 2. The circulating water pump inlet filter device of the power plant adopts a detachable design for the primary filter screen and the end filter cone cover. After using it for a while, you only need to remove the bolts used to fix it to remove the internal filter units at all levels, replace them with clean or new ones and use them again. The design of only needing to unscrew the screws is more convenient.

[0014] 3. The inlet filtration device of the circulating water pump of the power plant is designed with the primary filter screen, the secondary filter screen, the limit shaft, the spring, the sewage cone, the sewage plugging strip, the sewage outlet and the external sewage pipe. When in use, the external sewage pipe is led out to the outside of the water tank and a switch valve is installed. When one of the water pumps stops working and the water pump group is switched, the stopped water pump will not generate suction, and the spring will reset, thereby pushing the secondary filter screen to the primary filter screen until the sewage cone is inserted into the water filter hole, the sewage plugging strip is inserted into the water arc hole, and the sewage is discharged. The dirt cone pushes the pollutants filtered out of the water filter holes out of the holes, and the sewage blocking strip discharges the impurities filtered out of the water arc holes out of the holes, and the sewage blocking strip isolates the left and right sides of the water pump docking pipe, that is, the left and right sides of the primary filter screen are no longer connected. This action occurs automatically after the water pump stops working, and then the external control valve is opened, and the impurities discharged from the holes of the secondary filter screen will flow out of the sewage pipe to the outside through the sewage outlet along with the residual water in the water pump docking pipe, thereby achieving self-cleaning and reducing the continuous accumulation and retention of impurities in the circulating water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is an exploded view of the structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 Side view.

[0018] In the figure: 1. Water pump butt joint; 2. Primary filter screen; 3. Secondary filter screen; 4. End filter cone cover; 5. Water flow arc hole; 6. Threaded mounting hole; 7. Water flow filter hole; 8. Drain cone; 9. Sealing strip; 10. Drain port; 11. Drain pipe; 12. Limiting shaft; 13. Spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example: See Figure 1-3 The utility model provides a technical solution: a power plant circulating water pump inlet filtering device, comprising a water pump butt joint pipe 1, a primary filter screen plate 2 and a secondary filter screen plate 3, the primary filter screen plate 2 is arranged on the left side of the inner cavity of the water pump butt joint pipe 1, and the secondary filter screen plate 3 is arranged in the middle of the inner cavity of the water pump butt joint pipe 1.

[0021] An end filter cone cover 4 is arranged on the left side of the water pump butt joint pipe 1, a water flow filter hole 7 is opened on the side of the secondary filter screen plate 3, and a water flow arc hole 5 is opened at an equal distance on the side of the primary filter screen plate 2.

[0022] In this embodiment, through the coordinated use of the primary filter mesh plate 2, the secondary filter mesh plate 3 and the end filter cone cover 4, when the entire device is connected and installed with the water inlet of the water pump or the pipeline at the water inlet of the water pump, the water flow pumped by the water pump passes through the above-mentioned three-pass filtering structure and is filtered layer by layer, thereby improving the filtering and purification of water.

[0023] The middle of the outer ring of the primary filter screen plate 2 is provided with threaded mounting holes 6 at equal distances.

[0024] In this embodiment, the primary filter screen plate 2 and the end filter cone cover 4 are of detachable design. After being used for a while, you only need to remove the bolts used to fix them to remove the internal filter units of each level, replace them with clean or new ones, and use them again. The design of only needing to unscrew the screws is more convenient.

[0025] Among them, a sewage cone 8 is arranged on the side of the primary filter screen plate 2, a sewage blocking strip 9 is arranged on the left side of the secondary filter screen plate 3, a limiting shaft 12 is fixedly installed at an equal distance on the right side of the primary filter screen plate 2, a spring 13 is mounted on the outer ring of the limiting shaft 12, and the right side of the spring 13 is fixedly connected to the outer wall of the limiting shaft 12, and the other side of the spring 13 is fixedly connected to the side of the secondary filter screen plate 3, a sewage outlet 10 is opened on the right side of the bottom of the inner wall of the water pump docking pipe 1, and the sewage outlet 10 is funnel-shaped, an external sewage pipe 11 is arranged below the sewage outlet 10, and the top of the external sewage pipe 11 is fixedly connected to the outer wall of the water pump docking pipe 1.

[0026] In this embodiment, through the design of the primary filter screen plate 2, the secondary filter screen plate 3, the limit shaft 12, the spring 13, the sewage cone 8, the sewage blocking strip 9, the sewage outlet 10 and the external sewage pipe 11, when in use, the external sewage pipe 11 is led out to the outside of the water tank, and a switch valve is installed. When one of the water pumps stops working and the water pump group is switched, the stopped water pump will not generate suction, and the spring 13 will reset, thereby pushing the secondary filter screen plate 3 to approach the primary filter screen plate 2 until the sewage cone 8 is plugged into the water filter hole 7, the sewage blocking strip 9 is plugged into the water arc hole 5, and the sewage cone 8 pushes the pollutants filtered out of the water filter hole 7 out of the hole, and the sewage blocking strip 9 discharges the impurities filtered out of the water arc hole 5 out of the hole, and the sewage blocking strip 9 isolates the left and right sides of the water pump docking pipe 1, that is, the left and right sides of the primary filter screen plate 2 are no longer connected. This action occurs automatically after the water pump stops working, and then the external control valve is opened, and the impurities discharged from the holes of the secondary filter screen plate 3 will flow out from the external sewage pipe 11 to the outside through the sewage outlet 10 along with the residual water in the water pump docking pipe 1, thereby achieving self-cleaning and reducing the continuous accumulation and retention of impurities in the circulating water.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter device for the inlet of a circulating water pump in a power plant, comprising a water pump butt joint pipe (1), a primary filter screen plate (2) and a secondary filter screen plate (3), characterized in that: The primary filter screen plate (2) is arranged on the left side of the inner cavity of the water pump butt joint pipe (1), and the secondary filter screen plate (3) is arranged in the middle of the inner cavity of the water pump butt joint pipe (1); an end filter cone cover (4) is arranged on the left side of the water pump butt joint pipe (1); a sewage cone (8) is arranged on the side surface of the primary filter screen plate (2), and a sewage blocking strip (9) is arranged on the left side surface of the secondary filter screen plate (3); a limit shaft (12) is fixedly installed at an equal distance on the right side surface of the primary filter screen plate (2), a spring (13) is sleeved on the outer ring of the limit shaft (12), and the right side of the spring (13) is fixedly connected to the outer wall of the limit shaft (12), and the other side of the spring (13) is fixedly connected to the side surface of the secondary filter screen plate (3).

2. A circulating water pump inlet filtration device for a power plant according to claim 1, characterized in that: Water flow arc holes (5) are provided at equal distances on the side of the primary filter screen plate (2), and threaded mounting holes (6) are provided at equal distances in the middle of the outer ring of the primary filter screen plate (2).

3. A circulating water pump inlet filter device for a power plant according to claim 1 or 2, characterized in that: A water filtering hole (7) is provided on the side of the secondary filtering screen plate (3).

4. A circulating water pump inlet filtration device for a power plant according to claim 1 or 2, characterized in that: A sewage outlet (10) is provided on the right side of the bottom of the inner wall of the water pump butt joint pipe (1), and the sewage outlet (10) is funnel-shaped. An external sewage outlet pipe (11) is provided below the sewage outlet (10), and the top of the external sewage outlet pipe (11) is fixedly connected to the outer wall of the water pump butt joint pipe (1).

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