Self-cleaning filtering type full cross-flow pump

Abstract

The utility model relates to a kind of self-cleaning filtering type full-through flow pump, including pump shell, motor assembly is installed in pump shell inside, water inlet flow guide shell body is installed in one end of pump shell and another end is installed with water outlet flow guide shell body, filter ring frame is installed in the outer end of water inlet flow guide shell body, filter screen is installed in the end of water inlet flow guide shell body close to the inner wall of filter ring frame, self-cleaning nozzle is installed on the upper end of filter ring frame side wall, self-cleaning nozzle is bent to water inlet flow guide shell body side and is equipped with self-cleaning nozzle flange, backflow pipe is equipped on the side wall of water outlet flow guide shell body, backflow control valve is equipped on backflow pipe, backflow pipe is bent to pump shell side and is equipped with backflow pipe flange, pump shell top is installed with flow guide pipe by support, flow guide pipe flange is equipped on both ends of flow guide pipe, self-cleaning nozzle flange, backflow pipe flange are connected and fixed with corresponding flow guide pipe flange.The utility model's filter screen can filter fluid impurities, with self-cleaning function simultaneously, prolongs the service life of pump body.

Description

Technical Field

[0001] This utility model relates to the technical field of full-flow pumps, and in particular to a self-cleaning filter-type full-flow pump. Background Technology

[0002] Axial flow pumps are a type of horizontal axial flow pump, consisting of an electric motor, a reduction gear, and a pump as a single unit. They are installed in a pit inside an underwater dam, with the inlet and outlet channels aligned in a straight line, approximating a straight cylindrical shape. This results in minimal hydraulic loss, high water lifting efficiency, a compact structure, and convenient installation and maintenance, simplifying pump station engineering. Axial flow pumps are widely used in drainage and flood control projects in rivers, lakes, and seas.

[0003] The lack of a filter at the inlet of a typical axial flow pump means that some impurities are inevitably carried in the incoming fluid, which can damage the internal components of the pump and affect its service life. Utility Model Content

[0004] This invention aims to address the shortcomings of existing technologies by providing a self-cleaning filter-type full-flow pump.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A self-cleaning filter-type full-flow pump includes a pump casing, an electric motor assembly installed inside the pump casing, an inlet guide shell installed at one end of the pump casing and an outlet guide shell installed at the other end, a filter ring frame installed on the outer end of the inlet guide shell, a filter screen installed on the inner wall of the filter ring frame near the end of the inlet guide shell, a self-cleaning nozzle installed on the upper end of the side wall of the filter ring frame, the self-cleaning nozzle bends toward the inlet guide shell and is provided with a self-cleaning nozzle flange, a return pipe is provided on the side wall of the outlet guide shell, a return control valve is provided on the return pipe, a return pipe flange is provided on the return pipe bends toward the pump casing, and a guide pipe is installed on the top of the pump casing through a support, with guide pipe flanges at both ends of the guide pipe, and the self-cleaning nozzle flange and the return pipe flange are both connected and fixed to the corresponding guide pipe flanges.

[0007] The self-cleaning nozzle is angled towards the filter.

[0008] The inlet guide housing includes an eight-shaped inlet guide housing, inside which is provided a first guide cap. The opening of the first guide cap faces the motor assembly inside the pump housing. Inlet guide vanes are provided between the first guide cap and the inner wall of the eight-shaped inlet guide housing.

[0009] The water outlet guide housing includes an eight-shaped water outlet guide housing. Inside the eight-shaped water outlet guide housing, there is a second guide cap. The opening of the second guide cap faces the motor assembly inside the pump housing. Water outlet guide vanes are provided between the second guide cap and the inner wall of the eight-shaped water outlet guide housing.

[0010] The motor assembly includes a hub disposed between a first guide cap and a second guide cap. A bearing is installed inside the hub, and bearing end caps are bolted to both ends of the hub. A central shaft passes through the bearing and the bearing end cap. The first and second guide cap end caps abut against the bearing end caps. The two ends of the central shaft pass through the first and second guide caps respectively. Mechanical seals are provided between the central shaft and the end caps of the first and second guide caps. An impeller is mounted outside the hub, and a rotor core is mounted outside the impeller. A stator is provided on the inner wall of the pump casing corresponding to the rotor core, and a water-resistant winding assembly is installed in the slot of the stator.

[0011] The beneficial effects of this utility model are: the filter screen inside the filter ring frame can filter the fluid entering the pump casing, avoiding the influence of impurities. After the return pipe, guide pipe and self-cleaning spray pipe are connected, a self-cleaning pipeline is formed, which can flush the surface of the filter screen, wash away surface impurities, avoid blockage, form a self-cleaning function, and extend the service life of the pump body. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] In the diagram: 1-Pump casing; 2-Inlet guide casing; 3-Outlet guide casing; 4-Filter ring frame; 5-Filter screen; 6-Self-cleaning nozzle; 7-Self-cleaning nozzle flange; 8-Return pipe; 9-Return control valve; 10-Return pipe flange; 11-Support; 12-Guide pipe; 13-Guide pipe flange; 14-Connecting ring; 15-Hub; 16-Bearing; 17-Bearing end cover; 18-Central shaft; 19-Mechanical seal; 20-Impeller; 21-Rotor core; 22-Stator;

[0014] 201 - Figure-eight shaped inlet guide shell; 202 - First guide cap; 203 - Inlet guide vane; 204 - First connecting ring plate; 205 - First end plate;

[0015] 301 - Figure-eight shaped water outlet guide shell; 302 - Second guide cap; 303 - Water outlet guide vane; 304 - Second connecting ring plate; 305 - Second end plate;

[0016] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0017] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0018] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] like Figure 1 As shown, a self-cleaning filter-type full-flow pump includes a pump casing 1, an inlet guide housing 2, an outlet guide housing 3, a filter ring frame 4, a filter screen 5, a self-cleaning nozzle 6, a self-cleaning nozzle flange 7, a return pipe 8, a return control valve 9, a return pipe flange 10, a support 11, a guide pipe 12, a guide pipe flange 13, a connecting ring 14, a hub 15, a bearing 16, a bearing end cover 17, a central shaft 18, a mechanical seal 19, an impeller 20, a rotor core 21, and a stator 22.

[0022] The pump casing 1 contains an electric motor assembly.

[0023] The pump casing 1 has an inlet guide housing 2 installed at one end and an outlet guide housing 3 installed at the other end.

[0024] A filter ring frame 4 is installed on the outer end of the water inlet guide housing 2. A connecting ring 14 is provided on the outer wall of the filter ring frame 4 near the water inlet guide housing 2. The connecting ring 14 is connected to the water inlet guide housing 2 by bolts.

[0025] The inlet guide housing 2 includes a figure-eight shaped inlet guide housing 201. A first guide cap 202 is provided inside the figure-eight shaped inlet guide housing 201. The opening of the first guide cap 202 faces the motor assembly inside the pump housing 1. An inlet guide vane 203 is provided between the first guide cap 202 and the inner wall of the figure-eight shaped inlet guide housing 201.

[0026] The outer wall of the figure-eight-shaped water inlet guide housing 201 is provided with a first connecting ring plate 204. The first connecting ring plate 204 is installed on the end face of the pump housing 1 by bolts. One end of the figure-eight-shaped water inlet guide housing 201 is inserted into the pump housing 1 and the other end is provided with a first end plate 205. The first end plate 205 is fixed to the connecting ring 14 by bolts.

[0027] The water outlet guide housing 3 includes a figure-eight shaped water outlet guide housing 301. A second guide cap 302 is provided inside the figure-eight shaped water outlet guide housing 301. The opening of the second guide cap 302 faces the motor assembly inside the pump housing 1. A water outlet guide blade 303 is provided between the second guide cap 302 and the inner wall of the figure-eight shaped water outlet guide housing 301.

[0028] The outer wall of the figure-eight-shaped water outlet guide housing 301 is provided with a second connecting ring plate 304. The second connecting ring plate 304 is installed on the end face of the pump housing 1 by bolts. One end of the figure-eight-shaped water outlet guide housing 301 is inserted into the pump housing 1 and the other end is provided with a second end plate 305.

[0029] A filter screen 5 is installed on the inner wall of the filter ring frame 4 near the end of the inlet guide housing 2. A self-cleaning spray pipe 6 is installed on the upper side wall of the filter ring frame 4. The self-cleaning spray pipe 6 is bent toward the inlet guide housing 2 and is provided with a self-cleaning spray pipe flange 7. A return pipe 8 is provided on the side wall of the outlet guide housing 3. A return control valve 9 is provided on the return pipe 8. The return pipe 8 is bent toward the pump housing 1 and is provided with a return pipe flange 10. A guide pipe 12 is installed on the top of the pump housing 1 through a support 11. Guide pipe flanges 13 are provided at both ends of the guide pipe 12. The self-cleaning spray pipe flange 7 and the return pipe flange 10 are both connected and fixed to the corresponding guide pipe flange 13.

[0030] The self-cleaning nozzle 6 is inclined towards the filter screen 5.

[0031] The motor assembly includes a hub 15 disposed between the first guide cap 202 and the second guide cap 302. A bearing 16 is installed inside the hub 15. Bearing end caps 17 are bolted to both ends of the hub 15. A central shaft 18 passes through the bearing 16 and the bearing end caps 17. The end caps of the first guide cap 202 and the second guide cap 302 abut against the bearing end caps 17. The two ends of the central shaft 18 pass through the first guide cap 202 and the second guide cap 302 respectively. Mechanical seals 19 are provided between the central shaft 18 and the end caps of the first guide cap 202 and the second guide cap 302. An impeller 20 is mounted outside the hub 15. A rotor core 21 is mounted outside the impeller 20. A stator 22 is provided on the inner wall of the pump casing 1 corresponding to the rotor core 21. A water-resistant winding assembly is installed in the slot of the stator 22.

[0032] This utility model has a filter ring frame 4 installed at the outer end of the water inlet guide housing 2. The filter screen 5 inside the filter ring frame 4 can filter the fluid entering the pump housing 1, preventing impurities from affecting the service life of the internal components. At the same time, a self-cleaning spray pipe 6 is set on the water inlet guide housing 2, a return pipe 8 is set on the water outlet guide housing 3, and a guide pipe 12 is set on the pump housing 1. After the return pipe 8, guide pipe 12, and self-cleaning spray pipe 6 are connected, a self-cleaning pipeline is formed. Activating the return control valve 9 can flush the surface of the filter screen 5, wash away surface impurities, prevent clogging, form a self-cleaning function, and extend the service life of the pump body.

[0033] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A self-cleaning filter-type full-flow pump, characterized in that, The pump housing (1) includes a pump casing (1) with an electric motor assembly installed inside. One end of the pump casing (1) has an inlet guide housing (2), and the other end has an outlet guide housing (3). A filter ring frame (4) is installed on the outer end of the inlet guide housing (2). A filter screen (5) is installed on the inner wall of the filter ring frame (4) near the inlet guide housing (2). A self-cleaning spray pipe (6) is installed on the upper side wall of the filter ring frame (4). The self-cleaning spray pipe (6) bends towards the inlet guide housing (2) and is equipped with… The self-cleaning nozzle flange (7) and the return pipe (8) are provided on the side wall of the water outlet guide housing (3). The return pipe (8) is provided with a return control valve (9). The return pipe (8) is bent towards the pump housing (1) and a return pipe flange (10) is provided. The top of the pump housing (1) is equipped with a guide pipe (12) through a support (11). The two ends of the guide pipe (12) are provided with guide pipe flanges (13). The self-cleaning nozzle flange (7) and the return pipe flange (10) are both connected and fixed to the corresponding guide pipe flange (13).

2. The self-cleaning filter-type full-flow pump according to claim 1, characterized in that, The self-cleaning nozzle (6) is equipped with an inclined nozzle facing the filter screen (5).

3. The self-cleaning filter-type full-flow pump according to claim 2, characterized in that, A connecting ring (14) is provided on the outer wall of the filter ring frame (4) near the water inlet guide housing (2). The connecting ring (14) is connected to the water inlet guide housing (2) by bolts.

4. A self-cleaning filter-type full-flow pump according to claim 3, characterized in that, The inlet guide housing (2) includes a figure-eight shaped inlet guide housing (201), and a first guide cap (202) is provided inside the figure-eight shaped inlet guide housing (201). The opening of the first guide cap (202) faces the motor assembly inside the pump housing (1). Inlet guide vanes (203) are provided between the first guide cap (202) and the inner wall of the figure-eight shaped inlet guide housing (201).

5. A self-cleaning filter-type full-flow pump according to claim 4, characterized in that, The outer wall of the figure-eight water inlet guide shell (201) is provided with a first connecting ring plate (204). The first connecting ring plate (204) is installed on the end face of the pump shell (1) by bolts. One end of the figure-eight water inlet guide shell (201) is inserted into the pump shell (1) and the other end is provided with a first end plate (205). The first end plate (205) is fixed to the connecting ring (14) by bolts.

6. A self-cleaning filter-type full-flow pump according to claim 5, characterized in that, The water outlet guide housing (3) includes a figure-eight shaped water outlet guide housing (301). The figure-eight shaped water outlet guide housing (301) is provided with a second guide cap (302). The opening of the second guide cap (302) faces the motor assembly inside the pump housing (1). Water outlet guide vanes (303) are provided between the second guide cap (302) and the inner wall of the figure-eight shaped water outlet guide housing (301).

7. A self-cleaning filter-type full-flow pump according to claim 6, characterized in that, The outer wall of the figure-eight water outlet guide housing (301) is provided with a second connecting ring plate (304). The second connecting ring plate (304) is installed on the end face of the pump housing (1) by bolts. One end of the figure-eight water outlet guide housing (301) is inserted into the pump housing (1) and the other end is provided with a second end plate (305).

8. A self-cleaning filter-type full-flow pump according to claim 7, characterized in that, The motor assembly includes a hub (15) disposed between a first guide cap (202) and a second guide cap (302). A bearing (16) is installed inside the hub (15). Bearing end caps (17) are bolted to both ends of the hub (15). A central shaft (18) passes through the bearings (16) and bearing end caps (17). The end caps of the first guide cap (202) and the second guide cap (302) abut against the bearing end caps (17). The two ends of the central shaft (18) are... The ends are respectively inserted inside the first guide cap (202) and the second guide cap (302). Mechanical seals (19) are provided between the central shaft (18) and the end caps of the first guide cap (202) and the second guide cap (302). An impeller (20) is mounted on the outside of the hub (15). A rotor core (21) is assembled on the outside of the impeller (20). A stator (22) is provided on the inner wall of the pump casing (1) corresponding to the rotor core (21). A water-resistant winding assembly is inserted into the slot of the stator (22).

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