CN207567928U - Sewage lifter with backwash - Google Patents

Abstract

A kind of sewage lifter of band backwash, including a header tank (4), two proof submersible sand discharging pumps (5), two Rose Boxes (10), it is each fitted with a water inlet pipe (2) for non-return valve (11) and an outlet pipe (1), two proof submersible sand discharging pumps are fixed in header tank bottom and its intake mouth down, sewage draining exit are then connect with Rose Box by pipeline, water inlet pipe, outlet pipe connecting pin be designed with branch and be connected on two Rose Boxes；Backwash tube (8) is equipped on the sewage draining exit of proof submersible sand discharging pump, one end is connected by a solenoid electric valve from the side wall of sewage draining exit with sewage draining exit, the other end is then directed toward header tank bottom and blowdown pump inlet.Since the water inlet of header tank has been removed by filtration larger impurity, backwash tube will not be blocked when therefore backwashing, ensure that water tank bottom will not generate mud, improve the stability and durability of sewage lifter, manufacture and the maintenance cost of sewage lifter are reduced, ensures sewage lifter work steady in a long-term.

Description

Sewage lifter with backwash

Technical field

The utility model is related to a kind of sewage lifters, are promoted more particularly, to a kind of full-automatic sewage of band backwash Device.

Background technology

Sewage lifter with dredge pump is typically mounted at the bottom in the header tank at the sewage bottom, for discharging The sewage being pumped into header tank.With constantly pouring in for sewage, dirt can be cumulative in header tank bottom namely pump bottom.Especially It is when being again turned on sewage lifter progress blowdown after shutting down a period of time, part dirt may dry up, and depend merely on pump Suction possibly these dirts can not be discharged, need first to carry out the operations such as inverse-washing, dilution, be just unlikely to influence pump in this way Normal work.

But the existing sewage lifter for being equipped with backwash has following shortcoming：1. its water backwashed is also Come from the sewage of header tank, it is filtered to be easy to block the smaller backwash tube in aperture often containing larger impurity；2. Solid-liquid separator is only rinsed when it is backwashed, there is no the imports for the bottom and dredge pump for rinsing header tank；3. backwash is not Controllably.

And if backwash tube is blocked or does not rinse backwash tube water tank bottom and the mud of blowdown pump inlet, can reduce dirt The stability and durability of water lifting device increase manufacture and the maintenance cost of sewage lifter.

Utility model content

Technical problem to be solved in the utility model is just to provide band recoil a kind of simple in structure and that backwash is controllable The sewage lifter washed, the water for entering header tank fall larger impurity by strainer filtering, will not block backwash tube, really Mud will not be generated by protecting water tank bottom, improved the stability and durability of sewage lifter, reduced the system of sewage lifter It makes and maintenance cost, ensures sewage lifter work steady in a long-term.

Above-mentioned technical problem is solved, technical solution is used by the utility model：

The sewage lifter of a kind of band backwash, including a header tank 4, two proof submersible sand discharging pumps 5, two Rose Boxes 10, each From a water inlet pipe 2 and an outlet pipe 1 equipped with non-return valve 11, two proof submersible sand discharging pumps are fixed on bottom and its water inlet in header tank Downward, sewage draining exit is then connect with Rose Box by pipeline, water inlet pipe, outlet pipe connecting pin be designed with branch and be connected to two On Rose Box；It is characterized in that：Backwash tube is equipped on the sewage draining exit of the proof submersible sand discharging pump, one end passes through an electromagnetism control Valve 12 processed is connected from the side wall of sewage draining exit with sewage draining exit, the other end is then directed toward header tank bottom and blowdown pump inlet.

Preferably, the solenoid electric valve 12 includes valve body, armature, electromagnet and valve rod, and the valve body is hollow, is divided into Upper and lower two parts, respectively upper valve body and lower valve body, upper and lower valve body are connected by a trepanning of upper valve body bottom surface, the electricity Magnet, armature are located in upper valve body, sliding slot are vertically provided on electromagnet, armature can be slided up and down along the sliding slot of electromagnet, described Be provided with holes on the valve wall of lower valve body, a hole connects the sewage draining exit of the pump housing for inlet opening, another hole for apopore with it is described Discharging bent-tube connects, and the valve rod is located inside the lower valve body, and valve rod upper end penetrates upper valve from the trepanning of upper valve body bottom surface Internal portion is connected with the lower end of the armature inside upper valve body, and set is useful for coordinating with the trepanning of upper valve body bottom surface close on valve rod The sealing ring of envelope is also cased with spring on valve rod, and the upper end of spring and the bottom surface of upper valve body offset, and lower end is butted on valve rod, valve rod Lower end is additionally provided with to intake in lower valve body for separating between inlet opening and apopore in the plugging structure in water route and connection lower valve body The overlap joint pipe in water route between hole and apopore, wherein plugging structure are located above overlap joint pipe.

Preferably, the structure of the Rose Box 10 is：Closed elongated vessel, one end open connection outlet pipe, another End opening is located at connection dredge pump in container by opening connection water inlet pipe on pipeline connection dredge pump, midfeather, filter screen 9 End.

The course of work：It is in order to which them is allowed to take turns to operate to set two proof submersible sand discharging pumps.Usually, the water level of header tank is not When reaching predetermined altitude, submersible sewage air pump inoperative, sewage is from water inlet pipe (non-return valve opening) respectively through two filters, Liang Tai The sewage draining exit of proof submersible sand discharging pump is entered in header tank.When the water level of header tank reach a certain height, wherein a dredge pump Start, the water in header tank enters from this proof submersible sand discharging pump water inlet directed downwardly in pump, then pass through from the sewage draining exit of dredge pump Rose Box enters inlet and outlet pipes；The non-return valve of inlet channel is closed at this time, and the non-return valve of outlet conduit is opened, this Sample sewage is just transported in municipal drainage.When this pump, which stops another, to be started, operation principle is same as above.

Advantageous effect：Since water inlet pipe and outlet pipe are all the preceding parts that are located at Rose Box.In this way, the water inlet of water inlet pipe is It first passing through Rose Box and enters back into header tank later, dredge pump is to add backwash tube on the pipeline behind Rose Box, so Without big impurity in backwashing water, backwash tube will not be blocked；Meanwhile it is directed toward the backwash of header tank bottom and blowdown pump inlet Pipe can remove the mud of water tank bottom and dredge pump water inlet or the dirt below dredge pump is rinsed, is diluted, and make dirt It can smoothly be discharged by proof submersible sand discharging pump with sewage, prevent mud rubbish etc. from being accumulated in bottom of pond, use manpower and material resources sparingly, ensure sewage Lifting device energy long trouble free works normally.

Description of the drawings

Fig. 1 is schematic front view of the utility model with broken section；

Fig. 2 is the left view schematic diagram of Fig. 1；

Fig. 3 is the schematic top plan view of Fig. 1；

Fig. 4 is the backwash tube structure partial enlarged diagram that proof submersible sand discharging pump sewage draining exit is equipped with provided with electromagnetic valve；

Fig. 5 is the band schematic cross-sectional view that solenoid valve and backwash tube are in backwashing state；

Fig. 6 is off status diagram for Fig. 5.

Reference numeral refers in figure：1- outlet pipes, 2- water inlet pipes, 3- exhaust pipes, 4- header tanks, 5- proof submersible sand discharging pumps, 6- Pedestal, 7- auto-coupled settings, 8- backwash tubes, 9- Rose Box strainers, 10- Rose Boxes, 11- non-return valves, 12- solenoid electric valves.

Specific embodiment

Referring to Fig. 1, Fig. 2 and Fig. 3, the sewage lifter embodiment of the band backwash of the utility model is located at including one Header tank 4, two proof submersible sand discharging pumps 5, two Rose Boxes 10 on pedestal 6, the water inlet pipe 2 and one for being each fitted with non-return valve 11 Outlet pipe 1.

Two proof submersible sand discharging pumps 5 are fixed on bottom and its mouth down of intaking in header tank 4, and the sewage draining exit 31 of proof submersible sand discharging pump is then It is connect with Rose Box 10 by pipeline, is additionally provided with auto-coupled setting 7 on pipeline, on the lid of header tank 4, equipped with exhaust pipe 3, water inlet pipe 2nd, the connecting pin of outlet pipe 1 is designed with branch and is connected on two Rose Boxes 10.

Referring to Fig. 1, the structure of Rose Box 10 is：Closed elongated vessel, one end open connection outlet pipe 1, the other end are opened For mouth by opening connection water inlet pipe 2 on pipeline connection dredge pump, midfeather, filter screen 9, which is located in container, connects dredge pump one end； On the sewage draining exit of proof submersible sand discharging pump, equipped with the backwash tube 8 for being directed toward header tank bottom and blowdown pump inlet.

Referring to Fig. 4, backwash tube 8 is a bend pipe 52, and one end is by a solenoid electric valve 12 from the row of proof submersible sand discharging pump Dirty 31 side wall of mouth is connected with sewage draining exit, the other end is then directed toward header tank bottom and sewage pump inlet.

Referring to Fig. 5 and Fig. 6, solenoid electric valve 12 includes valve body 51, armature 513, electromagnet 514 and valve rod 515.

Valve body is hollow, is divided into upper and lower two parts, respectively upper valve body 511 and lower valve body 512, upper and lower valve body 511,512 It is connected by a trepanning 5111 of 511 bottom surface of upper valve body.Electromagnet 514, armature 513 are located in upper valve body 511, electromagnet Sliding slot 5141 is vertically provided on 514, armature 513 can be slided up and down along the sliding slot 5141 of electromagnet 514.The valve wall of lower valve body 512 On be provided with holes, a hole connects the sewage draining exit 31 of dredge pump for inlet opening 5121, and another hole is apopore 5122 and Discharging bent-tube 52 connections, valve rod 515 are located inside lower valve body 512, and 515 upper end of valve rod is penetrated from the trepanning 5111 of 511 bottom surface of upper valve body Inside valve body 511, it is connected with the lower end of the armature 513 inside upper valve body 511, set is useful for and upper valve body on valve rod 515 The sealing ring 516 of 511 bottom surface trepanning, 5111 fitted seal is also cased with spring 517, the upper end of spring 517 and upper valve on valve rod 515 The bottom surface of body 511 offsets, and lower end is butted on valve rod 515, and 515 lower end of valve rod is additionally provided with to separate or connect lower valve body 512 The plugging structure 5151 in water route and overlap joint pipe 5152, wherein plugging structure 5151 are located between inlet opening 5121 and apopore 5122 Overlap 5152 top of pipe.

As shown in Figure 5,6, control circuit enters upper valve body 511 and 514 electricity of electromagnet from the trepanning at 511 top of upper valve body Connection controls switching and the power on duration of electromagnet 514.After electromagnet 514 is powered, armature 513 is along electromagnet 514 Sliding slot 5141 move up, valve rod 515 below is driven to move up, overlap joint pipe 5152 on valve rod 515 is made to connect lower valve body 512 On inlet opening 5121 and apopore 5122, water route is connected；After 514 dead electricity of electromagnet, effect of the electromagnet 514 to armature 513 Power disappears, and valve rod 515 moves down reset under the effect of spring 517, the plugging structure above overlap joint pipe 5152 on valve rod 515 5151 just block the inlet opening 5121 in lower valve body 512 and apopore 5122, water route partition.

When submersible sewage pump startup, solenoid electric valve 12 is opened, and motor driven impeller rotation generates suction force, makes the pump housing The sewage of lower section is drawn into pump body and is discharged from the sewage draining exit 31 on the pump housing, at the same time, the high pressure water circulation pumped out It crosses solenoid electric valve 51 to enter and project from Discharging bent-tube 52, rinse, the dirt of mixing pump bottom precipitation.In the washing time of setting Afterwards, solenoid electric valve 51 is closed, pump normal work.

After electromagnet is powered, armature is moved up along the sliding slot on electromagnet, and valve rod below is driven to move up, is made on valve rod The inlet opening and apopore, water route overlapped in pipe connection lower valve body is connected；

After electromagnet dead electricity, electromagnet disappears to the active force of armature, and valve rod moves down reset under the action of the spring, positioned at valve The plugging structure above pipe is overlapped on bar and just blocks the inlet opening in lower valve body and apopore, water route partition.

It is to make backwash controllable to set solenoid valve.

Claims (1)

1. a kind of sewage lifter of band backwash, including a header tank（4）, two proof submersible sand discharging pumps（5）, two Rose Boxes （10）, be each fitted with non-return valve（11）A water inlet pipe（2）With an outlet pipe（1）, two proof submersible sand discharging pumps are fixed in header tank Bottom and its intake mouth down, sewage draining exit are then connect with Rose Box by pipeline, water inlet pipe, outlet pipe connecting pin be designed with point Branch is connected on two Rose Boxes；It is characterized in that：Backwash tube is equipped on the sewage draining exit of the proof submersible sand discharging pump（8）, One end is connected by a solenoid electric valve from the side wall of sewage draining exit with sewage draining exit, the other end is then directed toward header tank bottom and row Dirty pump inlet.