阅读说明：本技术 一种防堵塞装置及污水泵 (Anti-blocking device and sewage pump ) 是由 丁广鑫 刘栋 康灿 吴跃虎 陈逸杰 汪志远 于 2020-04-23 设计创作，主要内容包括：本发明提供一种防堵塞装置及污水泵,包括前置过滤装置；所述前置过滤装置包括前置管道、若干导流板和过滤网；所述前置管道内安装有若干导流板和过滤网,所述导流板倾斜安装在前置管道内靠近进口的位置,所述过滤网安装在导流板上方,过滤网与导流板在投影面上相互交错呈网格状；所述前置管道的出口用于与泵体的污水泵吸入室连接。本发明通过前置过滤装置进行预过滤,然后通过切割装置有效切割吸入液流中的杂质,防止污水泵发生堵塞,反冲洗装置安装在水泵出水口和管道壁的进水口之间,可以起到延长滤网使用寿命的效果,实现污水泵长期无堵塞运行。本发明整体结构简单,实用性强,具有良好的市场推广前景。(The invention provides an anti-blocking device and a sewage pump, comprising a preposed filtering device; the preposed filtering device comprises a preposed pipeline, a plurality of guide plates and a filter screen; the guide plate is obliquely arranged at a position close to the inlet in the preposed pipeline, the filter screen is arranged above the guide plate, and the filter screen and the guide plate are mutually staggered on a projection surface to form a grid shape; and the outlet of the preposed pipeline is used for being connected with a sewage pump suction chamber of the pump body. The pre-filtering device is used for pre-filtering, then the cutting device is used for effectively cutting impurities in the sucked liquid flow, the sewage pump is prevented from being blocked, the back flushing device is arranged between the water outlet of the water pump and the water inlet of the pipeline wall, the effect of prolonging the service life of the filter screen can be achieved, and the long-term non-blocking operation of the sewage pump is realized. The invention has simple integral structure, strong practicability and good market promotion prospect.)

1. An anti-clogging device is characterized by comprising a front-mounted filter device;

the pre-filtering device comprises a pre-pipeline (1), a plurality of guide plates (3) and a filter screen (4); a plurality of guide plates (3) and filter screens (4) are arranged in the preposed pipeline (1), the guide plates (3) are obliquely arranged at positions close to the inlet (2) in the preposed pipeline (1), the filter screens (4) are arranged above the guide plates (3), and the filter screens (4) and the guide plates (3) are mutually staggered on a projection surface to form a grid shape; the outlet (8) of the preposed pipeline (1) is used for being connected with a sewage pump suction chamber of the pump body (15).

2. Anti-clogging device according to claim 1, characterized in that said deflector (3) has an angle β of 60-80 ° with the horizontal.

3. Anti-clogging device according to claim 1, characterized in that said pre-filter means also comprise a plurality of star-shaped wheels (5);

the star-shaped rotating wheel (5) is arranged in the front pipeline (1) and is positioned behind the filter screen (4);

the surface of the star-shaped rotating wheel (5) is provided with a plurality of metal burrs.

4. Anti-clogging device according to claim 3, characterized in that said star-shaped runner (5) is three in number; the star-shaped rotating wheels (5) are arranged in the preposed pipeline (1) through bearings and rotating shafts, and the included angle alpha of the connecting lines of the bearing positions of the three star-shaped rotating wheels (5) is 60 degrees.

5. The anti-clogging device of claim 1, wherein said pre-filter further comprises a metal mesh enclosure for filling with solid catalyst.

6. The anti-clogging device according to claim 5, characterized in that said metallic mesh comprises a first metallic mesh (6) and a second metallic mesh (26);

the first metal net cover (6) and the second metal net cover (26) are reversely and obliquely arranged in the preposed pipeline (1), the first metal net cover (6) is positioned below the filter screen (4), the lowest point of the first metal net cover is close to the inlet (2), the second metal net cover (26) is positioned above the star-shaped rotating wheel (5), and the highest point of the second metal net cover is close to the outlet (8);

the included angle gamma between the first metal mesh enclosure (6) and the second metal mesh enclosure (26) and the vertical direction on the horizontal section is 20 degrees.

7. The anti-clogging device of claim 1, further comprising a cutting device;

the cutting device comprises a fixed cutter head (10) and a reamer (11); fixed blade disc (10) are used for installing in the sewage pump suction chamber, and fixed blade disc (10) correspond with the position of reamer (11), and reamer (11) are used for installing at impeller (13) front portion and rotate along with impeller (13), and fixed blade disc (10) and reamer (11) form the relative rotation cutting.

8. The anti-clogging device of claim 1, further comprising a back-flushing device;

the back washing device comprises a branch water outlet (18), a back washing water inlet (7) and a connecting pipeline (19);

one end of the branch water outlet (18) is used for being connected with a pump body outlet pipeline (17), the other end of the branch water outlet is connected with one end of a connecting pipeline (19), the other end of the connecting pipeline (19) is connected with one end of a back flushing water inlet (7), and the other end of the back flushing water inlet (7) is connected with the front pipeline (1).

9. Anti-clogging device according to claim 8, characterized in that said backflush water inlet (7) is mounted obliquely to the foreline (1), the angle θ between the backflush water inlet (7) and the foreline (1) being 30 degrees;

the branch water outlet (18) is obliquely arranged on the pump body outlet pipeline (17), and the included angle between the branch water outlet (18) and the pump body outlet pipeline (17) is 30 degrees.

10. A sewage pump comprising the anti-clogging device according to any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of sewage pumps, and particularly relates to an anti-blocking device and a sewage pump.

Background

With the development of science and technology and the advance of urbanization, the amount of generated sewage is increasing, and sewage pumps capable of transporting and treating sewage are widely applied to aspects of social life. But because the impurity kind that sewage mixes is more, and wherein filiform impurity of easily twining the gathering can cause the jam of sewage pump water inlet, consequently solve the easy problem of blockking up of sewage pump and be the key of guaranteeing the reliable operation of sewage pump. The most common method is to add a filter screen and a cutting device on the sewage pump device, such as a filter screen system designed by CN209943220U, separate impurities by using the filter screen system, and output the impurities by using a mechanical device. These impurities are not easily removed by mechanical means when entanglement or clumping is present in the contaminated water. And a pure mechanical cutting anti-blocking device such as CN208966606U, though can improve the anti-blocking level, set up too much cutting device on pump body internal pump shaft, not only can lead to the water pump design complicated, and the drive disk assembly is more, and mechanical efficiency is lower, and manufacturing cost increases, but also can influence the pump shaft, leads to the lift efficiency to descend. There is therefore a need for a more efficient anti-clogging device for sewage pumps.

Disclosure of Invention

In order to solve the technical problems, the invention provides an anti-blocking device and a sewage pump, wherein pre-filtration is carried out through a pre-filtration device provided with a guide plate, a filter screen and a star-shaped rotating wheel, then impurities in sucked liquid flow are effectively cut through a cutting device provided with a fixed cutter head and a reamer rotating along with an impeller, the sewage pump is prevented from being blocked, and a back-washing device is arranged between a water outlet of the water pump and a water inlet of a pipeline wall, so that the effect of prolonging the service life of the filter screen can be achieved, and the long-term non-blocking operation of the. The invention has simple integral structure, strong practicability and good market promotion prospect.

Therefore, the invention provides an anti-blocking device and a sewage pump provided with the same.

The technical scheme of the invention is as follows: an anti-clogging device comprises a front-mounted filter device;

the preposed filtering device comprises a preposed pipeline, a plurality of guide plates and a filter screen; the guide plate is obliquely arranged at a position close to the inlet in the preposed pipeline, the filter screen is arranged above the guide plate, and the filter screen and the guide plate are mutually staggered on a projection surface to form a grid shape; and the outlet of the preposed pipeline is used for being connected with a sewage pump suction chamber of the pump body.

In the scheme, the included angle beta between the guide plate and the horizontal direction is 60-80 degrees.

In the above scheme, the pre-filter device further comprises a plurality of star-shaped rotating wheels;

the star-shaped rotating wheel is arranged in the front pipeline and is positioned behind the filter screen;

the surface of the star-shaped rotating wheel is provided with a plurality of metal burrs.

Further, the number of the star-shaped rotating wheels is three; the star-shaped rotating wheels are arranged in the preposed pipeline through bearings and rotating shafts, and the included angle alpha of the connecting lines of the bearing positions of the three star-shaped rotating wheels is 60 degrees.

In the above scheme, the pre-filter device further comprises a metal mesh enclosure for filling the solid catalyst.

Further, the metal mesh enclosure comprises a first metal mesh enclosure and a second metal mesh enclosure;

the first metal mesh enclosure and the second metal mesh enclosure are obliquely arranged in the preposed pipeline in a reverse direction, the first metal mesh enclosure is positioned below the filter screen, the lowest point of the first metal mesh enclosure is close to the inlet, the second metal mesh enclosure is positioned above the star-shaped rotating wheel, and the lowest point of the second metal mesh enclosure is close to the outlet;

the included angle gamma between the first metal mesh enclosure and the second metal mesh enclosure and the vertical direction on the horizontal section is 20 degrees.

In the scheme, the device further comprises a cutting device;

the cutting device comprises a fixed cutter disc and a reamer; the fixed cutter head is used for being installed in a sewage pump suction chamber, the fixed cutter head corresponds to the reamer in position, the reamer is used for being installed in the front of the impeller and rotating along with the impeller, and the fixed cutter head and the reamer form relative rotation cutting.

In the scheme, the device also comprises a back washing device;

the back washing device comprises a branch water outlet, a back washing water inlet and a connecting pipeline;

one end of the branch water outlet is used for being connected with the pump body outlet pipeline, the other end of the branch water outlet is connected with one end of the connecting pipeline, the other end of the connecting pipeline is connected with one end of the back flushing water inlet, and the other end of the back flushing water inlet is connected with the front pipeline.

Furthermore, the back flushing water inlet is obliquely arranged on the preposed pipeline, and the included angle theta between the back flushing water inlet and the preposed pipeline is 30 degrees;

the branch water outlet is obliquely arranged on the pump body outlet pipeline, and the included angle between the branch water outlet and the pump body outlet pipeline is 30 degrees.

A sewage pump comprises the anti-blocking device.

Compared with the prior art, the invention has the beneficial effects that: the invention can effectively prevent the sewage pump from being blocked, the anti-blocking preposed pipeline is arranged below the pump body, impurities in the sewage are preliminarily filtered by utilizing the guide plate, the filter screen and the star-shaped rotating wheel with burrs, and the filtered sewage can process granular impurities and filamentous impurities in the sewage through a cutting section formed by the fixed cutter head and the reamer rotating along with the shaft, thereby further preventing the sewage pump from being blocked. Meanwhile, the sewage inlet is provided with a three-way valve which is respectively connected with the sewage inlet pipeline, the sewage discharge pipeline and the preposed pipeline, so that sundries washed reversely can be conveniently discharged. The novel LED lamp is simple in overall structure, high in practicability and good in market prospect.

Drawings

FIG. 1 is a schematic view of the anti-clogging device and a sewage pump according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a cutting device according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view (a) and a schematic structural view (b) of a pre-duct according to an embodiment of the present invention;

FIG. 4 is a diagram of a screen according to an embodiment of the present invention;

FIG. 5 is a perspective view (a) and a top view (b) of a reamer of an embodiment of the present invention;

fig. 6 is a perspective view (a) and a top view (b) of a fixed cutter head according to an embodiment of the present invention;

fig. 7 is a perspective view (a) and a plan view (b) of a connecting head according to an embodiment of the present invention.

In the figure: 1. a front pipeline; 2. an inlet; 3. a baffle; 4. a filter screen; 5. a star-shaped rotating wheel; 6. a first metal mesh enclosure; 7. a back flush water inlet; 8. an outlet; 9. a socket head cap screw; 10. a fixed cutter head; 11. a reamer; 12. a socket head cap screw; 13. an impeller; 14. a pump shaft; 15. a pump body; 16. an outlet of the pump; 17. an outlet conduit; 18. a branch water outlet; 19. connecting a pipeline; 20. a rotating shaft; 21. a connector; 22. a gate valve; 23. a three-way valve; 24. a sewage inlet; 25. reversely flushing a sewage draining outlet; 26. a second metal mesh.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.