Anti-blocking sewage pump

Abstract

The utility model relates to the technical field of water pumps, and discloses an anti-blocking sewage pump which comprises a pump body, an anti-blocking piece is installed on a water inlet pipe of the pump body, the anti-blocking piece comprises a shell with one open end and a filter box with two open ends, a flange is fixed to the open end of the shell, and the flange is used for installing the shell on the water inlet pipe. A backwashing pipe is arranged at the bottom of the shell, two ports of the filter box respectively cover the water inlet pipe and the backwashing pipe, and a sewage inlet pipe is arranged on the side wall of the shell. The utility model has the beneficial effects that the sewage pump stops after working for a period of time, then high-pressure clear water is introduced into the backwashing pipe to wash away attachments on the filter box and discharge the attachments from the sewage inlet pipe, and then the sewage pump is started again, so that the backwashing time is short, the working efficiency is not influenced, the filter box is not easy to damage, the service life is long, and the cost is low. And the maintenance cost of the utility model is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to an anti-blocking sewage pump. Background Art

[0002] Sewage pumps are mainly used to transport urban sewage, feces or liquid media containing solid particles such as fibers and paper scraps. Since the sewage being transported contains fibers that are easy to entangle or bunch, these fibers are easily entangled on the impeller, and solid particles such as paper scraps accumulate inside the pump body and block the front end of the impeller.

[0003] The Chinese utility model (authorization announcement number: CN217632950U, name: a kind of anti-blocking self-cleaning sewage pump) belongs to the field of water pump technology. A suction pipe is fixedly installed on the surface of the sewage pump body, and a driving motor is fixedly installed on the inner wall of one end of the suction pipe. The output end of the driving motor is provided with a shaft, and one end of the shaft is fixedly connected to a connecting rod, and the other end of the connecting rod is fixedly sleeved with a sealed bearing, and the outer ring of the sealed bearing is fixedly sleeved with a filter cover, and the surface of the filter cover is contacted with an inner brush, and one end of the inner brush is fixedly connected with a cleaning brush. The anti-blocking self-cleaning sewage pump can perform double filtering of impurities and dirt in the sewage through the detachable anti-blocking cover and filter cover to prevent impurities from entering the sewage pump and causing blockage, and through the provided connecting rod and cleaning brush, the inner and outer brushes can be driven to automatically clean the filter holes of the anti-blocking cover and the filter cover during the operation of the driving motor provided in the sewage pump, thereby greatly improving the convenience of use of the sewage pump. However, the brush is made of fragile material and requires a long period of downtime for replacement, which affects work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-blocking sewage pump to overcome the shortcomings of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: a blockage-proof sewage pump, comprising a pump body, an anti-blocking part is installed on the water inlet pipe of the pump body, the anti-blocking part comprises a shell with an open end and a filter box with open ends, a flange is fixed to the open end of the shell, the flange is used to install the shell on the water inlet pipe, a backwash pipe is provided at the bottom of the shell, the two ports of the filter box respectively cover the water inlet pipe and the backwash pipe, and a sewage inlet pipe is provided on the side wall of the shell.

[0006] Preferably, the cross section of the filter box is in the shape of a polygonal star.

[0007] Preferably, a sealing groove closed at both ends is provided on the flange, an elastic sealing ring is installed in the sealing groove, and the elastic sealing ring is used to prevent leakage of liquid in the shell.

[0008] Preferably, the elastic sealing ring includes a rubber main body ring, and a raised ring A is integrally formed on the inner ring or outer ring of the main body ring. The raised ring A is concentric with the main body ring, and the raised ring A extends to the bottom of the main body ring. The connection between the raised ring A and the side wall of the main body ring has a smooth transition, and the sealing groove is adapted to the elastic sealing ring.

[0009] Preferably, a contraction groove is provided at the bottom of the body ring, and the contraction groove is circular and has the same center as the body ring.

[0010] Preferably, a B raised ring is integrally formed on the top of the main body ring, the B raised ring is concentric with the main body ring, the connection between the B raised ring and the side wall of the main body ring is smoothly transitioned, a gap is provided between the side wall of the main body ring and the inner wall of the sealing groove, and the top of the B raised ring is located above the notch of the sealing groove.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The sewage pump stops working after a period of time, and then high-pressure clean water is introduced into the backwash pipe to wash away the attachments on the filter box and discharge them from the sewage inlet pipe, and then it is started again. The backwashing time is short and does not affect the work efficiency. The filter box is not easily damaged and has a long service life, which reduces the maintenance cost of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

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

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

[0016] Figure 4 Schematic diagram of the installation structure of the elastic sealing ring;

[0017] In the figure, 1-pump body, 2-housing, 3-filter box, 4-flange, 5-backwash pipe, 6-sewage inlet pipe, 7-sealing groove, 8-body ring, 9-A raised ring, 10-contraction groove, 11-B raised ring. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1-3As shown, an anti-blocking sewage pump includes a pump body 1. An anti-blocking part is installed on the water inlet pipe of the pump body 1. The anti-blocking part includes a shell 2 with an open end and a filter box 3 with open ends. A flange 4 is fixed to the open end of the shell 2. The flange 4 is used to install the shell 2 on the water inlet pipe. A backwash pipe 5 is provided at the bottom of the shell 2. The two ports of the filter box 3 cover the water inlet pipe and the backwash pipe 5 respectively. A plurality of circumferentially uniformly distributed sewage inlet pipes 6 are provided on the side wall of the shell 2. The sewage pump stops after working for a period of time, and then high-pressure clean water is introduced into the backwash pipe 5 to wash away the attachments on the filter box 3 and discharge them from the sewage inlet pipe 6, and then the work is started again. The backwashing time is short, which does not affect the working efficiency, and the filter box 3 is not easily damaged and has a long service life, which reduces the maintenance cost of the utility model.

[0025] In this embodiment, if Figure 3 As shown, the cross section of the filter box 3 is in the shape of a polygonal star, which increases the filtering area, thereby accelerating the filtering speed and reducing the impact on the suction volume.

[0026] In this embodiment, if Figure 4 As shown, a sealing groove 7 closed at both ends is provided on the flange 4, and an elastic sealing ring is installed in the sealing groove 7. The elastic sealing ring is used to prevent liquid leakage in the shell 2. The elastic sealing ring includes a rubber main body ring 8, and a raised ring A 9 is integrally formed on the inner ring or outer ring of the main body ring 8. The raised ring A 9 is concentric with the main body ring 8, and the raised ring A 9 extends to the bottom of the main body ring 8. The connection between the raised ring A 9 and the side wall of the main body ring 8 is smoothly transitioned. The sealing groove 7 is adapted to the elastic sealing ring, and the main body ring 8 is fixed in the sealing groove 7 by snapping the raised ring A into the accommodating cavity. The snapping of the raised ring A into the accommodating cavity not only increases the filling rate of the sealing ring to the sealing groove 7 and improves the sealing effect, but also the sealing ring is snapped into the sealing groove 7, making the structure more stable after the sealing ring is installed and not easy to fall off.

[0027] In this embodiment, if Figure 4 As shown, a shrinkage groove 10 is provided at the bottom of the main body ring 8. The shrinkage groove 10 is ring-shaped and concentric with the main body ring 8. When the sealing ring is installed into the sealing groove 7, the shrinkage groove 10 deforms and shrinks, making it easier to install the sealing ring. After installation, the sealing ring is restored under the action of elastic force and is stuck in the sealing groove 7. The structure is stable and not easy to fall off.

[0028] In this embodiment, if Figure 4As shown, a B raised ring 11 is integrally formed on the top of the main body ring 8. The B raised ring 11 is concentric with the main body ring 8. The connection between the B raised ring 11 and the side wall of the main body ring 8 is smoothly transitioned. A gap is provided between the side wall of the main body ring 8 and the inner wall of the sealing groove 7. The top of the B raised ring 11 is located above the notch of the sealing groove 7. When the sealing ring is not working, the sealing ring is stuck in the sealing groove 7 by the A raised ring 9 to prevent it from falling out of the sealing groove 7, and avoids being stuck in the sealing groove 7 by virtue of the sealing ring deformation. When the sealing ring is working, the B raised ring 11 is pressed into the sealing groove 7, and the entire sealing ring is deformed, thereby filling the gap between the sealing ring and the sealing groove 7, preventing leakage while avoiding secondary deformation of the sealing ring (the O-ring is stuck in the sealing groove 7 by primary deformation, and needs to seal the gap between the two workpieces when working, so the part protruding above the sealing groove 7 will be compressed into the sealing groove 7, that is, secondary deformation). The stress in the sealing ring is too large and damage occurs.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-blocking sewage pump, comprising a pump body (1), wherein an anti-blocking member is installed on the water inlet pipe of the pump body (1), characterized in that: The anti-blocking component comprises a shell (2) with an open end and a filter box (3) with open ends. A flange (4) is fixed to the open end of the shell (2). The flange (4) is used to install the shell (2) on the water inlet pipe. A backwash pipe (5) is provided at the bottom of the shell (2). The two ends of the filter box (3) respectively cover the water inlet pipe and the backwash pipe (5). A sewage inlet pipe (6) is provided on the side wall of the shell (2).

2. The anti-blocking sewage pump according to claim 1, characterized in that: The cross section of the filter box (3) is in the shape of a polygonal star.

3. The anti-blocking sewage pump according to claim 1, characterized in that: The flange (4) is provided with a sealing groove (7) that is closed at both ends. An elastic sealing ring is installed in the sealing groove (7). The elastic sealing ring is used to prevent leakage of liquid in the housing (2).

4. The anti-blocking sewage pump according to claim 3, characterized in that: The elastic sealing ring comprises a rubber main body ring (8), an A raised ring (9) is integrally formed on the inner ring or the outer ring of the main body ring (8), the A raised ring (9) is cocentric with the main body ring (8), the A raised ring (9) extends to the bottom of the main body ring (8), and the connection between the A raised ring (9) and the side wall of the main body ring (8) is smoothly transitioned, and the sealing groove (7) is adapted to the elastic sealing ring.

5. The anti-blocking sewage pump according to claim 4, characterized in that: A contraction groove (10) is provided at the bottom of the body ring (8), and the contraction groove (10) is circular and has the same center as the body ring (8).

6. The anti-blocking sewage pump according to claim 4, characterized in that: The top of the main body ring (8) is integrally formed with a B raised ring (11), the B raised ring (11) and the main body ring (8) are cocentric, the connection between the B raised ring (11) and the side wall of the main body ring (8) is smoothly transitioned, a gap is provided between the side wall of the main body ring (8) and the inner wall of the sealing groove (7), and the top of the B raised ring (11) is located above the notch of the sealing groove (7).

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