CN207567929U - A kind of sewage lifter of band backwash - Google Patents

Abstract

The utility model discloses a kind of sewage lifters 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；On the pipeline of connection Rose Box and the sewage draining exit of proof submersible sand discharging pump, equipped with the backwash tube (8) for being directed toward header tank bottom and dredge pump water inlet.Since the water inlet of header tank falls larger impurity by strainer filtering, the smaller backwash tube of caliber 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

A kind of sewage lifter of band 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.

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 a kind of sewage lifting of band backwash simple in structure Device, the water for entering header tank fall larger impurity by strainer filtering, will not block backwash tube, it is ensured that water tank bottom is not Mud can be generated, improves the stability and durability of sewage lifter, reduces manufacture and the maintenance cost of sewage lifter, Ensure 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：On the pipeline of the sewage draining exit of the connection Rose Box and proof submersible sand discharging pump, catchment equipped with direction Bottom portion and the backwash tube of blowdown pump inlet.

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.

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.

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 are fixed in header tank bottom and its mouth down of intaking, the sewage draining exit of proof submersible sand discharging pump then with mistake Filter box 10 is connected by pipeline, is additionally provided with auto-coupled setting 7 on pipeline, and on the lid of header tank 4, equipped with exhaust pipe 3, water inlet pipe 2 goes out The connecting pin of water 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 pipeline of connection Rose Box and the sewage draining exit of proof submersible sand discharging pump, equipped with the recoil for being directed toward header tank bottom and blowdown pump inlet Wash pipe 8.

Claims (2)

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), the water inlet pipe (2) and an outlet pipe (1), two proof submersible sand discharging pumps for being each fitted with non-return valve (11) 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：On pipeline of the connection Rose Box with proof submersible sand discharging pump sewage draining exit, Equipped with the backwash tube (8) for being directed toward header tank bottom and blowdown pump inlet.

2. the sewage lifter of band backwash according to claim 1, it is characterized in that：The knot of the Rose Box (10) Structure is：Closed elongated vessel, one end open connection outlet pipe (1), another end opening connect dredge pump, midfeather by pipeline Upper opening connection water inlet pipe (2), filter screen (9) are located at connection dredge pump end in container.