CN211778040U

CN211778040U - Sewage lifting device

Info

Publication number: CN211778040U
Application number: CN201922380511.1U
Authority: CN
Inventors: 刘洋
Original assignee: Pentax Tianjin Electromechanical Co ltd
Current assignee: Pentax Tianjin Electromechanical Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-27
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to the technical field of sewage treatment equipment, and discloses a sewage lifting device, which comprises a motor, a pump body and a capacitor, wherein an output shaft of the motor is fixedly connected with an impeller of the pump body, and the impeller of the pump body can rotate along with the rotation of the output shaft of the motor; the capacitor is connected in series with a winding of the motor to form a circuit; the rear cover of the motor is made of metal, is fixedly connected with the shell of the motor and forms an inner cavity capable of containing the capacitor, and the capacitor is fixed in the inner cavity and is in contact with the inner wall of the rear cover; this sewage hoisting device covers rather than shell fixed connection behind the motor that will adopt metal material, forms an inner chamber that can hold electric capacity, is fixed in electric capacity in the inner chamber and contacts with the inner wall of back lid, can save space, be convenient for encapsulate, make the device overall arrangement more nimble to electric capacity radiating effect is good.

Description

Sewage lifting device

Technical Field

The utility model relates to a sewage treatment device technical field, concretely relates to sewage lifting device.

Background

With the development of urbanization, more and more occasions needing to use the sewage lifting device to discharge sewage appear, such as sewage discharge work of underground space. In sewage hoisting device, owing to adopt single-phase motor, still need establish ties at least one electric capacity with the winding of motor usually, in order to satisfy the radiating needs of electric capacity, electric capacity among the sewage hoisting device sets up in its outside usually, and the shared space of this kind of overall arrangement is great relatively to the structure is also comparatively complicated, simultaneously because sewage hoisting device often soaks in sewage, potential safety hazards such as electric leakage appear easily.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a sewage lifting device, this sewage lifting device with electric capacity setting inside it, save space, be convenient for sealed and the radiating effect is good.

In order to achieve the above object, the present invention provides the following technical solutions:

a sewage lifting device, comprising: the electric pump comprises a motor, a pump body and a capacitor, wherein an output shaft of the motor is fixedly connected with an impeller of the pump body, and the impeller of the pump body can rotate along with the rotation of the output shaft of the motor; the capacitor is connected in series with a winding of the motor to form a circuit; the rear cover of the motor is made of metal materials, is fixedly connected with the shell of the motor and forms an inner cavity capable of containing the capacitor, and the capacitor is fixed in the inner cavity and is in contact with the inner wall of the rear cover.

The utility model discloses in, preferred, adopt two kinds of sealing methods of skeleton oil blanket and mechanical seal between the output shaft of motor and its shell.

The utility model discloses in, it is preferred, sewage hoisting device still includes: the water inlet and the water outlet are arranged on the shell; and the cutting blade is positioned below the impeller of the sewage lifting pump, is fixedly connected with an output shaft of the motor, and can be driven by the motor to rotate.

The utility model discloses in, preferred, sewage hoisting device still includes the outlet pipe, outlet pipe one end is passed the delivery port with the delivery outlet of the pump body is connected, and the other end is connected with outside sewage pipes.

The utility model discloses in, it is preferred, be equipped with backflow prevention part in the outlet pipe.

The present invention is preferably configured such that the cutting blade is a four-blade cutting blade, and the four-blade cutting blade has at least one blade portion having a saw-toothed shape.

In the present invention, it is preferable that at least one inward hard protruding portion is provided on the inner wall of the housing.

The utility model discloses in, preferred, sewage hoisting device still includes liquid level switch, the motor by liquid level switch control is opened and is closed.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a sewage hoisting device covers rather than shell fixed connection behind the motor that will adopt the metal material, forms an inner chamber that can hold electric capacity, is fixed in electric capacity in the inner chamber and contacts with the inner wall of back lid, can save space, be convenient for encapsulate, make the device overall arrangement more nimble to the electric capacity radiating effect is good.

Drawings

Fig. 1 is a schematic structural view of a sewage lifting device.

Fig. 2 is a sectional view of the sewage lifting device.

Fig. 3 is an exploded view of the sewage lifting device.

Fig. 4 is a schematic view of a four-blade cutting blade.

In the drawings: 1-motor, 2-rear cover, 3-pump body, 4-capacitor, 5-shell, 6-first water inlet, 7-second water inlet, 8-third water inlet, 9-water outlet, 10-cutting blade, 11-framework oil seal component, 12-mechanical seal component, 13-four-blade cutting blade, 14-bulge, 15-water outlet pipe, 16-backflow prevention component and 17-liquid level switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, 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 belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a preferred embodiment of the present invention provides a sewage lifting device, which includes a motor 1, a pump body 3, a capacitor 4, a housing 5, a cutting blade 10, a boss 14, a water outlet pipe 15, a backflow preventing member 16, and a liquid level switch 17.

In this embodiment, the output shaft of the motor 1 is fixedly connected with the impeller of the pump body 3, the output shaft of the motor 1 can drive the impeller of the pump body 3 to rotate, the rear cover 2 of the motor 1 is made of metal and is shaped like a cylinder, the rear cover 2 is fixedly connected with the housing of the motor 1 and can form an inner cavity, the capacitor 4 is a cylinder and is installed in the inner cavity, the side surface of the capacitor is in contact with the inner side wall of the rear cover 2, the upper bottom surface of the capacitor is in contact with the inner upper wall of the rear cover 2, the capacitor 4 is connected with the winding of the motor 1 in series through the pin and is connected into a circuit, the inner cavity is sealed by the structure that the rear cover 2 is fixedly connected with the housing of the motor 1, and outside liquid. A framework oil seal part 11 and a mechanical seal part 12 are arranged between an output shaft of the motor 1 and a shell of the motor, and the output end of the motor 1 is sealed in a framework oil seal mode and a mechanical seal mode by using the two parts, so that the IP (InGRESS protection) protection grade of the motor 1 reaches IP68, and an excellent sealing effect is obtained. The motor 1 is fixed in the housing 5 through an upper portion of the rear cover 2. The shell 5 is provided with three water inlets and a water outlet, namely a first water inlet 6, a second water inlet 7, a third water inlet 8 and a water outlet 9, wherein the diameter of the first water inlet 6 is larger than that of the second water inlet 7 and that of the third water inlet 8. So set up the water inlet, sewage hoisting device can arrange the bilge pit in and use, also can be connected three water inlet directly respectively with domestic sewage pipes, directly discharge sewage into sewage hoisting device, and first water inlet 6's diameter is great, can be connected with the drainage pipe that contains large granule solid waste such as toilet bowl, and second water inlet 7 and third water inlet 8 can be connected with general domestic drainage pipe. The bulge 14 is made of hard material, the quantity of the bulge can be determined according to the size of the space in the shell 5, the bulge 14 is integrally arranged on the inner wall of the shell 5, and when sewage in the shell 5 flows, the bulge 14 collides with solid waste in the sewage to play a certain role in crushing the solid waste. The pump body 3 is fixed in the shell 5 through the support leg at the lower part thereof, the output port thereof is connected with the water outlet pipe 15, and the water outlet pipe 15 extends out of the shell 5 through the water outlet 9 and can be connected with an external sewage pipeline. A backflow preventing component 16 is further disposed inside the water outlet pipe 15, and is used for preventing sewage flowing from the water outlet pipe 15 to an external sewage draining pipeline from flowing back to the sewage lifting device, and the backflow preventing component 16 is a one-way valve in this embodiment. The output shaft of the motor 1 penetrates through the pump body 3 and extends downwards for installing a cutting blade 10, and the cutting blade 10 is installed below the pump body 3, fixed on the output shaft of the motor 1 and capable of rotating along with the rotation of the output shaft of the motor 1 for cutting large-particle solid waste in sewage into small pieces. Wherein, cutting blade 10 is two leaf type cutting blade, also can change it into four leaf type cutting blade 13, has the cutting part of two relative leaves to be the cockscomb structure among the four leaf type cutting blade 13, and the cutting part of two leaves is ordinary cutting edge in addition, and four leaf type cutting blade 13 can cut more various solid waste, can improve the efficiency of cutting solid waste, reaches the purpose that prevents sewage hoisting device jam better. The liquid level switch 17 is arranged in the shell 5 and connected with the rear cover 2 of the motor 1, the opening and closing of the motor 1 can be controlled, the liquid level switch 17 opens the motor 1 when the liquid level in the shell 5 reaches a preset value, and the liquid level switch 17 closes the motor 1 when the liquid level in the shell 5 is lower than the preset value.

The working principle is as follows:

when the sewage lifting device of the embodiment operates, sewage in a sewage pit or a household sewage discharge pipeline enters the shell 5 from the first water inlet 6, the second water inlet 7 and the third water inlet 8, when the liquid level of the sewage in the shell 5 rises to reach a preset liquid level, the liquid level switch 17 controls the motor 1 to be started, the motor 1 starts to rotate, the sewage generates certain rotation under the action of the motor 1, solid waste in the sewage collides with the bulge part 14, part of the solid waste becomes fine or loose, then the solid waste rushes to the cutting blade 10 along with the sewage, the cutting blade 10 cuts large-particle solid waste into small blocks, the small solid waste is sucked into the pump body 3 along with the sewage, the pump body 3 conveys the sewage into the water outlet pipe 15, and sufficient pressure is provided to enable the sewage to be upwards discharged to an external sewage discharge pipeline. Wherein, electric capacity 4 is along with the operation of motor 1 and amasss the heat accumulation volume, because the outer wall of electric capacity 4 and the inner wall contact of back lid 2, back lid 2 is the metal material, and its heat conductivity is better to back lid 2 soaks in the sewage most of the time, so the heat of accumulating in electric capacity 4 can loop through electric capacity 4's outer wall and back lid 2 rapidly and transmit to the sewage in, makes electric capacity 4's temperature can keep in safety range, can not break down, has reached good radiating effect. After the sewage in the shell 5 is discharged, the liquid level drops below the preset value, the liquid level switch 17 controls the motor 1 to be turned off, after the motor 1 stops working, the position of the sewage lifting device may be lower than an external sewage discharge pipeline, the discharged sewage may flow back into the sewage lifting device from the water outlet pipe 15, and the backflow preventing component 16 blocks the sewage in the water outlet pipe 15, so that the sewage cannot flow back into the sewage lifting device. Through the process, the sewage lifting device can achieve a good heat dissipation effect under the condition that the capacitor 4 is arranged inside the motor 1, the motor 1 can achieve an excellent waterproof effect through two modes of framework oil seal and mechanical seal, large-particle solid waste in sewage is cut into small blocks by utilizing the cutting blade 10 and the bulge 14, and finally sewage is lifted and discharged to an external sewage discharge pipeline.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. A sewage lifting device, comprising: a motor, a pump body and a capacitor,

an output shaft of the motor is fixedly connected with an impeller of the pump body, and the impeller of the pump body can rotate along with the rotation of the output shaft of the motor;

the capacitor is connected in series with a winding of the motor to form a circuit;

the rear cover of the motor is made of metal materials, is fixedly connected with the shell of the motor and forms an inner cavity capable of containing the capacitor, and the capacitor is fixed in the inner cavity and is in contact with the inner wall of the rear cover.

2. The sewage lifting device according to claim 1, wherein a skeleton oil seal and a mechanical seal are adopted between the output shaft of the motor and the housing thereof.

3. The sewage lifting device of claim 2, further comprising:

the water inlet and the water outlet are arranged on the shell;

and the cutting blade is positioned below the impeller of the sewage lifting pump, is fixedly connected with an output shaft of the motor, and can be driven by the motor to rotate.

4. The sewage lifting device according to claim 3, further comprising a water outlet pipe, wherein one end of the water outlet pipe passes through the water outlet to be connected with the output port of the pump body, and the other end of the water outlet pipe is connected with an external sewage pipeline.

5. The waste water lifting device as claimed in claim 4, wherein the outlet pipe is provided with a backflow prevention member.

6. The sewage lifting device of claim 3, wherein the cutting blade is a four-bladed cutting blade, and the edge of at least one blade of the four-bladed cutting blade is serrated.

7. The sewage lifting device of claim 3, wherein the inner wall of the housing is provided with at least one inwardly directed hard protrusion.

8. The sewage lifting device according to claim 3, further comprising a liquid level switch, wherein the motor is controlled to be turned on and off by the liquid level switch.