CN211174818U

CN211174818U - Backwashing device of submersible sewage pump

Info

Publication number: CN211174818U
Application number: CN201921853960.7U
Authority: CN
Inventors: 何智锋; 魏汤尧; 徐乃江
Original assignee: Zhejiang Fengqiu Crane Pump Industry Co ltd
Current assignee: Zhejiang Fengqiu Crane Pump Industry Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-08-04
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a back flush arrangement of submersible sewage pump, the device include automatic flush valve, the pressure line that is connected with automatic flush valve, automatic flush valve be connected with connecting bend and nozzle, connecting bend be connected with submersible sewage pump's volute, draw pressure water in the volute, to automatic flush valve, wash the work through the nozzle to the pump hole, the other side connection of volute flange of the pressure line other end and submersible sewage pump to realize the device's automatic washing work. The utility model discloses just can carry out automatic flushing work when submersible sewage pump starts, wash out mud, the filth of pump pit bottom to discharge via the water pump during operation, it is very practical, get rid of mud filth respond well, and very energy-conservation.

Description

Backwashing device of submersible sewage pump

Technical Field

The utility model belongs to the technical field of water pump equipment and specifically relates to a back washing unit of submersible sewage pump.

Background

The submersible sewage pump is widely applied to sewage treatment engineering, mainly municipal engineering and antifouling stations, and has large use amount and mature technology. However, there are the following problems: in the in-process that uses, in the bottom in pump hole, the mud filth is easily piled up, can influence the normal work of water pump, and the water yield of water pump will reduce to it is not good to have the heat dissipation, and the motor easily burns out, and mud is piled up, leads to the unable normal work of water pump.

The existing solutions are as follows: 1. a small stirring device is arranged on the pump, but the mode has small service area, low stirring efficiency and unsatisfactory sludge cleaning effect; 2. adopt electronic flushometer, but this kind of mode is not energy-conserving, and the effect of stirring is not good, and the fault rate is high, and is with high costs.

Disclosure of Invention

In order to solve the problems, the utility model provides a back washing device of a submersible sewage pump.

The technical scheme of the utility model is that a back flush device of submersible sewage pump, the device include automatic flushing valve, the pressure line that is connected with automatic flushing valve, automatic flushing valve be connected with connecting bend and nozzle, connecting bend be connected with submersible sewage pump's volute, draw pressure water from the volute, to automatic flushing valve, wash the work through the nozzle to the pump pit, the pressure line other end be connected by the volute flange with submersible sewage pump to realize the automatic washing work of the device.

Preferably, a volute flange is arranged on a volute of the submersible sewage pump and used for being connected with the automatic coupling device during working, water in the volute is discharged from the volute flange through the volute flange and is discharged through the automatic coupling device, a side edge of the volute flange is provided with a volute flange side water outlet, the volute is further provided with a volute side water outlet, a connecting bent pipe of the backwashing device is connected with the volute side water outlet, one end of the pressure pipeline is connected with the automatic flushing valve, and the other end of the pressure pipeline is connected with the volute flange side water outlet.

Preferably, the pressure pipeline include pressure pipe, choke valve and micro-adjusting valve, the pressure pipe include first pressure pipe, second pressure pipe and third pressure pipe, the choke valve locate between first pressure pipe and the second pressure pipe, the one end of first pressure pipe with automatic flushing valve connect, micro-adjusting valve locate between second pressure pipe and the third pressure pipe, the one end of third pressure pipe with volute flange side outlet connect.

Preferably, one end of the connecting elbow is connected with the automatic flushing valve through a first external joint, and the other end of the connecting elbow is connected with the lateral water outlet of the volute; the lower end of the micro-adjusting valve is connected with the third pressure pipe through a second outer joint.

Preferably, the outlet of the nozzle is in the tangential direction of the volute of the submersible sewage pump in the horizontal direction, the nozzle is inclined downwards in the vertical direction, and the included angle R between the outlet direction of the nozzle and the horizontal plane is 10-30 degrees.

Preferably, the working pressure of the automatic flushing valve is regulated by a throttle valve, and the pressure range is 0.1-0.6 MPa; the working time of the automatic flushing valve is controlled by the micro-regulating valve, and the working time range is 20-60 seconds.

The utility model has the advantages that: the utility model discloses just can carry out automatic flushing work when submersible sewage pump starts, wash out the mud, the filth of pump pit bottom, drive the mud around the pump pit and be the circumference form and flow, the filth suspends from the water pump bottom to discharge via the water pump during operation, it is very practical, it is respond well to get rid of mud filth. Just the utility model discloses only wash at the in-process that the submersible sewage pump started, can be well very low, it is more energy-conserving. The utility model discloses simple structure, the fault rate is low, convenient the maintenance.

Drawings

Fig. 1 is a front view of the installation structure of the present invention in operation.

Fig. 2 is a top view of the schematic view of the installation structure of the present invention in operation.

Fig. 3 is a front view of the present invention.

Fig. 4 is a left side view of the present invention.

Fig. 5 is a view of the nozzle of the present invention in a horizontal orientation.

Fig. 6 is an orientation view of the nozzle of the present invention in the vertical direction.

Description of reference numerals:

1: an automatic coupling device; 2: a submersible sewage pump; 3: a backwashing device; 4: a volute flange; 5: a volute; 6: a pump pit; 7: a water outlet at the flange side of the volute; 8: a nozzle; 9: an automatic flush valve; 10: a volute lateral water outlet; 11: a connecting bolt; 12: a first external joint; 13: connecting a bent pipe; 14: a first pressure pipe; 15: a throttle valve; 16: an inner joint; 17: a second pressure pipe; 18: a micro-motion adjusting valve; 19: a second outer joint; 20: a third pressure pipe; 21: a movable joint.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

As shown in fig. 1-4, the utility model discloses an automatic flushing valve 9, the pressure line that is connected with automatic flushing valve 9, automatic flushing valve 9 be connected with connecting bend 13 and nozzle 8, connecting bend 13 be connected with the volute 5 of dive dredge pump 2, draw pressure water from volute 5, to automatic flushing valve 9, wash work to pump pit 6 through nozzle 8, the pressure line other end and the other connection of volute flange 4 of dive dredge pump 2 to realize the device's automatic washing work.

In this embodiment, a volute flange 4 is arranged on a volute 5 of the submersible sewage pump 2 and is used for being connected with the automatic coupling device 1 during operation, water in the volute 5 is discharged from the volute flange 4 through the volute flange 4 and is discharged through the automatic coupling device 1, a volute flange side water outlet 7 is arranged on the side edge of the volute flange 4, a volute side water outlet 10 is further arranged on the volute 5, a connecting bent pipe 13 of the backwashing device 3 is connected with the volute side water outlet 10, one end of a pressure pipeline is connected with the automatic flushing valve 9, and the other end of the pressure pipeline is connected with the volute flange side water outlet 7.

In this embodiment, the pressure pipeline includes a pressure pipe, a throttle valve 15 and a micro-adjusting valve 18, the pressure pipe includes a first pressure pipe 14, a second pressure pipe 17 and a third pressure pipe 20, the throttle valve 15 is arranged between the first pressure pipe 14 and the second pressure pipe 17, one end of the first pressure pipe 14 is connected with the automatic flushing valve 9, the micro-adjusting valve 18 is arranged between the second pressure pipe 17 and the third pressure pipe 20, and one end of the third pressure pipe 20 is connected with the volute flange side water outlet 7.

In this embodiment, one end of the connection elbow 13 is connected to the automatic flush valve 9 through a first external joint 12, the other end of the connection elbow is connected to the lateral water outlet 10 of the volute, and the connection elbow 13 and the lateral water outlet 10 of the volute can be connected through a connection bolt 11; the throttle valve 15 and the first pressure pipe 14 and the second pressure pipe 17 can be connected through an inner joint 16; the upper end of the micro-adjusting valve 18 is connected with the second pressure pipe 17, the lower end of the micro-adjusting valve 18 is connected with the third pressure pipe 20 through the second outer joint 19, and the movable joint 21 can be additionally arranged between the second outer joint 19 and the third pressure pipe 20, so that the device can be installed and connected to work conveniently.

In this embodiment, as shown in fig. 5 and 6, the outlet of the nozzle 8 is horizontally a tangential direction of the volute 5 of the submersible sewage pump 2, and is inclined downward in the vertical direction, and an included angle R between the outlet direction of the nozzle 8 and the horizontal plane is 10 to 30 °. As shown in fig. 1 and 2, the arrows indicate the direction of water flow during the flushing process. During washing, the export of nozzle 8 can drive the mud around the pump hole 6 and be the circumference form and flow along the tangential direction of volute 5 of submersible sewage pump 2 on the horizontal direction, and the export of nozzle 8 downward sloping in vertical direction, and the rivers that spout can drive the filth suspension of pump hole 6 bottom to discharge it by submersible sewage pump 2.

In the embodiment, the working pressure of the automatic flushing valve 9 is regulated by a throttle valve 15, the throttle valve is a hydraulic type throttle valve with reference model number jlg10 and hydraulic type, and the pressure range is 0.1-0.6 MPa; the working time of the automatic flushing valve 9 is controlled by a micro-adjusting valve 18, the micro-adjusting valve is in a manual adjusting mode and is linear, the reference model is wl13n-320p, and the working time range is 20-60 seconds.

The utility model discloses a theory of operation:

when the submersible sewage pump 2 is started, the impeller of the submersible sewage pump 2 starts to rotate, the automatic flushing valve 9 is in a normally open state from the start of the rotation speed of 0 to the process of reaching the rated rotation speed, and in the process, the impeller in the submersible sewage pump 2 rotates to generate pressure water flow with certain pressure in the volute 5, and the pressure water flow is sprayed out from the nozzle 8 to flush the pump pit 6. During washing, the export of nozzle 8 can drive the mud around the pump hole 6 and be the circumference form and flow along the tangential direction of volute 5 of submersible sewage pump 2 on the horizontal direction, and the export of nozzle 8 downward sloping in vertical direction, and the rivers that spout can drive the filth suspension of pump hole 6 bottom to discharge it by submersible sewage pump 2.

When the submersible sewage pump 2 is started, the impeller rotating speed is equal to the rated rotating speed, because pressure difference exists between the pressure pipe and the volute lateral water outlet 10, the pressure in the first pressure pipe 14 is greater than the pressure in the volute lateral water outlet 10, at the moment, the automatic flushing valve 9 is closed, the flushing work is finished, the backwashing device 3 of the submersible sewage pump 2 only utilizes the time for lifting the impeller rotating speed of the submersible sewage pump 2 from 0 to the normal rated rotating speed to flush, so the working energy consumption is very low, and the flushing effect on the sewage and sludge at the bottom of the pump pit 6 is better.

In the description of the present invention, it should be understood that the terms "one end", "the other end", "the lower end", "downward", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the term "connected" or the like is to be construed broadly, e.g., as meaning a fixed connection, a detachable connection, or an integral part; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a back washing unit of submersible sewage pump, its characterized in that the device includes automatic flush valve, the pressure line that is connected with automatic flush valve, automatic flush valve be connected with connecting bend and nozzle, connecting bend be connected with submersible sewage pump's volute, draw pressure water in the volute, to automatic flush valve, wash the work through the nozzle to the pump pit, the other end of pressure line and submersible sewage pump's volute flange other connection to realize the automatic washing work of the device.

2. The backwashing device of the submersible sewage pump as claimed in claim 1, wherein a scroll flange is provided on a scroll of the submersible sewage pump for connection with the automatic coupling device during operation, water in the scroll is discharged from the scroll flange through the scroll flange and through the automatic coupling device, a scroll flange side water outlet is provided at a side of the scroll flange, a scroll side water outlet is further provided on the scroll, a connection elbow of the backwashing device is connected with the scroll side water outlet, one end of the pressure pipeline is connected with the automatic flushing valve, and the other end of the pressure pipeline is connected with the scroll flange side water outlet.

3. The backwash device for a submersible sewage pump as claimed in claim 2, wherein the pressure line comprises a pressure pipe, a throttle valve and a micro-regulating valve, the pressure pipe comprises a first pressure pipe, a second pressure pipe and a third pressure pipe, the throttle valve is arranged between the first pressure pipe and the second pressure pipe, one end of the first pressure pipe is connected with the automatic flushing valve, the micro-regulating valve is arranged between the second pressure pipe and the third pressure pipe, and one end of the third pressure pipe is connected with the outlet on the flange side of the volute.

4. The backwashing device of the submersible sewage pump as claimed in claim 3, wherein one end of the connecting elbow is connected with the automatic flushing valve through a first external joint, and the other end is connected with the lateral water outlet of the volute; the lower end of the micro-adjusting valve is connected with the third pressure pipe through a second outer joint.

5. The backwashing device of the submersible sewage pump according to claim 1, wherein an outlet of the nozzle is horizontally a tangential direction of a volute of the submersible sewage pump, and is inclined downward in a vertical direction, and an angle R between the outlet direction of the nozzle and a horizontal plane is 10-30 °.

6. The backwashing device of the submersible sewage pump according to claim 3, wherein the working pressure of the automatic flushing valve is regulated by a throttle valve, and the pressure range is 0.1-0.6 MPa; the working time of the automatic flushing valve is controlled by the micro-regulating valve, and the working time range is 20-60 seconds.