CN216111295U

CN216111295U - Sewage pump

Info

Publication number: CN216111295U
Application number: CN202121350144.1U
Authority: CN
Inventors: 钟军
Original assignee: Shanghai Monot Industrial Co ltd
Current assignee: Shanghai Monot Pump Group Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-03-22
Anticipated expiration: 2031-06-17

Abstract

The utility model relates to the technical field of sewage discharge, in particular to a sewage discharge pump for sewage discharge. The utility model provides a sewage pump, which aims to solve the problems of complex mechanical structure and high energy consumption of the existing sewage pump. The sewage pump has simple mechanical structure and low energy consumption.

Description

Sewage pump

Technical Field

The utility model relates to the technical field of sewage discharge, in particular to a sewage discharge pump for sewage discharge.

Background

At present, common dredge pump in market is for avoiding blockking up, stirs the cutting through setting up the stirring cutting wheel to blockking up such as silt, mortar and fibre that get into in the pump body usually and forms the suspended solid, discharges outside the dredge pump to improve stifled, the blowdown ability of preventing of dredge pump. However, the sewage pump has a complex mechanical structure and high manufacturing difficulty, and the stirring cutting wheel continuously rotates, so that the energy consumption is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sewage pump, which aims to solve the problems of complex mechanical structure and high energy consumption of the existing sewage pump. In the sewage pump, the two impellers with the blades arranged on the two sides of the inlet in a centrosymmetric manner are used for sucking sewage, and the outlet of the impeller is larger, so that the blockage of the outlet of the impeller by sludge, mortar, fibers and other blocking substances in the sewage can be avoided, and the problem that the sewage pump is easy to block is solved.

Preferably, the motor casing comprises a casing, an upper end cover and a lower end cover, the upper end cover is hermetically connected with the casing at the upper end of the casing, and an upper bearing groove is formed in the upper end cover; the lower end cover is arranged at the lower end of the casing and is in sealing connection with the casing, a lower bearing groove and an oil groove which are communicated back to back are arranged on the lower end cover, and the lower bearing groove faces the upper bearing groove and corresponds to the upper bearing groove in position. Therefore, the motor shell of the sewage pump is formed by sealing and connecting the casing, the upper end cover and the lower end cover, the structure is simple, the manufacture is convenient, and the cost is low, so that the production cost of the sewage pump can be reduced.

Preferably, the volute is mounted below the lower end cover and is in sealed connection with the sump at a sump slot. Therefore, the top of the volute is used as an oil groove cover and is hermetically connected with the oil groove at the notch of the oil groove, the mechanical structure of the sewage pump can be further simplified, and the production cost of the sewage pump is reduced. Furthermore, the top of the volute is provided with an inserting convex ring, and the inserting convex ring is inserted into the oil groove and is connected with the notch of the oil groove in an interference fit manner. Like this, the spiral case is in oil groove interference fit through the notch of grafting bulge loop at the oil groove and connects, connects simply and sealed effectual.

Preferably, the inner diameter D of the groove opening of the oil groove is larger than the inner diameter D of the groove bottom of the oil groove. Therefore, when the lower end cover of the motor shell is manufactured, the oil groove insert is convenient to demould, and the production cost of the sewage pump can be further reduced.

Preferably, the lower end cover is provided with a support ring platform facing the upper end cover, and when the lower end cover is connected with the casing, the lower end surface of the casing is pressed against the support ring platform. Therefore, when the casing is connected with the lower end cover, the casing is sleeved on the lower end cover and is pressed against the supporting ring table, the connection is simple and convenient, and the connection sealing performance is good.

Preferably, the upper end cover is provided with a connecting convex ring facing the lower end cover, and the connecting convex ring is inserted into the casing and is tightly attached to the inner wall of the casing. Therefore, when the casing and the upper end cover of the motor shell in the sewage pump are connected, the connecting convex ring on the upper end cover is inserted into the casing and is tightly attached to the inner wall of the casing, the connection is simple and convenient, and the connection sealing performance is good.

Preferably, a sealing cover is arranged on the motor casing, and the sealing cover is mounted at the upper end of the motor casing and is connected with the motor casing in a sealing manner. Therefore, the upper end of the motor shell is covered by the sealing cover, and the sealing cover is connected with the motor shell in a sealing manner, so that the waterproof performance of the sewage pump can be ensured.

Drawings

FIG. 1 is a schematic structural view of a dredge pump without a rotating shaft and a motor;

FIG. 2 is a schematic view of the dredge pump shown in FIG. 1 with the containment cover removed;

FIG. 3 is a schematic sectional view A-A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of B-B of FIG. 2;

fig. 5 is a schematic structural view of an impeller for a sewage pump of the present invention.

Detailed Description

Hereinafter, the dredge pump of the present invention will be described in detail with reference to fig. 1 to 5.

As shown in fig. 1 to 3, the sewage pump of the present invention includes a motor housing 1 and a scroll casing 2, and the scroll casing 2 is installed at a lower end of the motor housing 1. The motor casing 1 comprises a casing 11, an upper end cover 12 and a lower end cover 13, wherein the upper end cover 12 is hermetically connected with the casing 11 at the upper end of the casing 11, and an upper bearing groove 121 is formed in the upper end cover 12; the lower end cover 13 is connected with the casing 11 in a sealing way at the lower end of the casing 11, a lower bearing groove 131 and an oil groove 132 which are communicated back to back are arranged on the lower end cover 13, and the lower bearing groove 131 faces the upper bearing groove 121 and corresponds to the position of the upper bearing groove 121. Therefore, the motor shell of the sewage pump is formed by sealing and connecting the casing, the upper end cover and the lower end cover, the structure is simple, the manufacture is convenient, and the cost is low, so that the production cost of the sewage pump can be reduced. Preferably, the inner diameter D of the notch of the oil groove 132 is greater than the inner diameter D of the groove bottom of the oil groove 132. Therefore, when the lower end cover 13 of the motor shell 1 is manufactured, the oil groove insert is convenient to demould, and the production cost of the sewage pump can be further reduced. Preferably, the upper end cap 12 is provided with a connecting convex ring 122 facing the lower end cap 13, and the connecting convex ring 122 is inserted into the casing 11 and closely attached to the inner wall of the casing 11. Therefore, when the motor casing 1, the casing 11 and the upper end cover 12 of the sewage pump are connected, the connecting convex ring 122 on the upper end cover 12 is inserted into the casing 11 and is tightly attached to the inner wall of the casing 11, the connection is simple and convenient, and the connection sealing performance is good. Preferably, the lower end cap 13 is provided with a support ring platform 133 facing the upper end cap 12, and when the lower end cap 13 is connected to the casing 11, the lower end surface of the casing 11 is pressed against the support ring platform 133. Therefore, when the motor casing 1 in the sewage pump is connected with the casing 11 and the lower end cover 13, the casing 11 is sleeved on the lower end cover 13 and is pressed against the supporting ring platform 133, the connection is simple and convenient, and the connection sealing performance is good. Preferably, a sealing cover 4 is arranged on the motor casing 1, and the sealing cover 4 is installed at the upper end of the motor casing 1 and is connected with the motor casing 1 in a sealing manner. Therefore, the upper end of the motor casing 1 is covered by the sealing cover 4, and the sealing cover 4 is connected with the motor casing 1 in a sealing manner, so that the waterproof performance of the sewage pump can be ensured.

As shown in fig. 3 and 4, an impeller 3 is disposed in the volute 2, and the impeller 3 is in transmission connection with an output shaft of a motor installed in the motor casing 1 and is driven by the motor to rotate. As shown in fig. 5, the impeller 3 includes a top cover 31, a bottom plate 32, and two blades 33, the top cover 31 is parallel to and opposite to the bottom plate 32, an inlet 321 is provided in the middle of the bottom plate 32, and the two blades 33 are sandwiched between the top cover 31 and the bottom plate 32 and are arranged in central symmetry on both sides of the inlet 321. Preferably, the volute 2 is mounted below the lower end cover 13 and is sealingly connected to the oil sump 132 at a notch of the oil sump 132. In this way, the top of the volute 2 is used as an oil groove cover and is in sealing connection with the oil groove 132 at the notch of the oil groove 132, so that the mechanical structure of the sewage pump can be further simplified, and the production cost of the sewage pump is reduced. Preferably, the top of the volute 2 is provided with a plug-in convex ring 21, and the plug-in convex ring 21 is inserted into the oil groove 132 and connected with the notch of the oil groove 132 in an interference fit manner. Like this, the spiral case 2 is in oil groove 132 interference fit through the notch of grafting bulge loop 21 at oil groove 132 and connects, connects simply and sealed effectual.

In the sewage pump, the two impellers with the blades arranged on the two sides of the inlet in a centrosymmetric manner are used for sucking sewage, and the outlet of the impeller is larger, so that the blockage of the outlet of the impeller by sludge, mortar, fibers and other blocking substances in the sewage can be avoided, and the problem that the sewage pump is easy to block is solved.

Claims

1. The utility model provides a dredge pump, its characterized in that, this dredge pump includes motor casing and spiral case, the spiral case is installed the lower extreme of motor casing, be provided with the impeller in the spiral case, this impeller with install the output shaft transmission of the motor in the motor casing is connected and rotate under the drive of motor, just the impeller includes top cap, bottom plate and two blades, the top cap with the bottom plate is parallel relative, just the middle part of bottom plate is provided with the import, two the blade is pressed from both sides and is put between the top cap with the bottom plate and the both sides of import are central symmetry and set up.

2. The dredge pump of claim 1, wherein the motor casing comprises a casing, an upper end cap and a lower end cap, the upper end cap is connected with the casing in a sealing way at the upper end of the casing, and an upper bearing groove is arranged on the upper end cap; the lower end cover is arranged at the lower end of the casing and is in sealing connection with the casing, a lower bearing groove and an oil groove which are communicated back to back are arranged on the lower end cover, and the lower bearing groove faces the upper bearing groove and corresponds to the upper bearing groove in position.

3. The dredge pump of claim 2, where the volute is mounted below the lower end cover and sealingly connects with the sump at a sump slot.

4. The dredge pump of claim 3, characterized in that the top of the volute is provided with a plug-in convex ring, and the plug-in convex ring is inserted into the oil tank and connected with the notch of the oil tank in an interference fit manner.

5. The dredge pump of any of claims 2-4, characterized in that the inner diameter D of the sump's slot opening is larger than the inner diameter D of the sump's sump bottom.

6. The dredge pump of any of claims 2-4, characterized in that the lower end cover is provided with a support ring platform facing the upper end cover, and when the lower end cover is connected with the casing, the lower end face of the casing is pressed against the support ring platform.

7. The dredge pump of claim 6, characterized in that the upper end cover is provided with a connecting convex ring facing the lower end cover, and the connecting convex ring is inserted into the casing and tightly attached to the inner wall of the casing.

8. The dredge pump of any one of claims 1-4, characterized in that the motor casing is provided with a sealing cover, and the sealing cover is mounted on the upper end of the motor casing and is connected with the motor casing in a sealing way.