CN213448814U

CN213448814U - External closed sewage lifting device with back flush

Info

Publication number: CN213448814U
Application number: CN202021887523.XU
Authority: CN
Inventors: 王先飞; 李; 罗研
Original assignee: Hefei Kaiquan Motor Pump Co ltd
Current assignee: Hefei Kaiquan Motor Pump Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-06-15
Anticipated expiration: 2030-09-02

Abstract

The utility model relates to a municipal administration sewage treatment field, concretely relates to take external airtight sewage hoisting device of back flush, include the header tank of dry and latent dual-purpose dredge pump and being used for storing sewage, dry and latent dual-purpose dredge pump be located the outside of header tank, the delivery port of header tank and dry and latent dual-purpose dredge pump pass through the blow off pipe intercommunication, the water inlet of header tank communicates to the sewage pipeline, the delivery port of dry and latent dual-purpose dredge pump communicates to external sewer line through the manifold, the delivery port and the header tank of dry and latent dual-purpose dredge pump between be connected with the back flush pipeline. The dry-submersible dual-purpose sewage pump is placed outside the water collecting tank, the water collecting tank does not need to be opened during maintenance, peculiar smell in the water collecting tank cannot be diffused into surrounding air, and the dry-submersible dual-purpose sewage pump is very suitable for occasions with high requirements on environment quality, such as public and commercial buildings and the like of a rail transit junction.

Description

External closed sewage lifting device with back flush

Technical Field

The utility model relates to a municipal administration sewage treatment field, concretely relates to take external airtight sewage hoisting device of back flush.

Background

Traditional pit blowdown mode adopts the pit foundation that cement was pour, and two water pumps are placed to inside, and sewage is promoted to appointed pipe network by the water pump. Due to the open design of the pit, the sewage can emit peculiar smell and can only be applied to areas with small personnel contact frequency, and the application range is small, so that the pit is free from sealing property and is not environment-friendly. But also has poor maintainability, and the water pump is exposed in the air for a long time and rusts easily, which causes the trouble of disassembling the water pump during maintenance. In addition, the sewage pit is easy to generate sludge deposition, the later cleaning is difficult, and the use and maintenance cost is high. Meanwhile, the safety is not high, a fixed top cover is not arranged above the pit, and the possibility of falling of personnel is caused at any time.

The sewage lifting device is a system formed by a sewage pump, a water collecting tank, a control device and related pipe fittings and valves and used for lifting and conveying waste sewage which is lower than a sewer or far away from a municipal pipe network. The problem that traditional sump pit exists can effectual solution or avoid. However, the sewage pump of the current sewage lifting device is directly placed in the water collecting tank, and the sewage pump is easy to damage and short in service life. And the water collecting tank needs to be opened during maintenance, so that the peculiar smell in the water collecting tank is naturally diffused into the surrounding air, and the environmental quality is seriously damaged. This is not allowed in public and commercial building situations such as rail transit hubs.

Disclosure of Invention

The utility model aims at providing a but automatic flushing sewage case, the high external airtight sewage hoisting device of back flush of taking of seal.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an external airtight sewage hoisting device of area back flush, includes and futilely dives dual-purpose dredge pump and the header tank that is used for storing sewage, the dual-purpose dredge pump of futilely dive be located the outside of header tank, the delivery port of header tank and the dual-purpose dredge pump of futilely diving pass through the blow off pipe intercommunication, the water inlet intercommunication of header tank leads to the sewage pipeline, the delivery port of the dual-purpose dredge pump of futilely dive communicates to external sewer pipe through the manifold, the delivery port and the header tank of the dual-purpose dredge pump of futilely dive be connected.

Due to the adoption of the technical scheme, the dry-submersible dual-purpose sewage pump is placed outside the water collecting tank, the water collecting tank does not need to be opened during maintenance, peculiar smell in the water collecting tank cannot be diffused into surrounding air, and the dry-submersible dual-purpose sewage pump is very suitable for occasions with high requirements on environmental quality, such as public and commercial buildings and the like of a rail transit junction. And the back flush pipeline can wash the inside of the water collecting tank automatically, prevent impurity deposition, effectively reduce the times of cleaning the water collecting tank and also reduce the failure rate of equipment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic view of the structure of the access panel and the grapple.

Detailed Description

An external closed sewage lifting device with backwashing comprises a dry-submersible dual-purpose sewage pump 120 and a water collecting tank 110 for storing sewage, wherein the dry-submersible dual-purpose sewage pump 120 is located outside the water collecting tank 110, a water outlet of the water collecting tank 110 is communicated with the dry-submersible dual-purpose sewage pump 120 through a sewage discharge pipe 130, a water inlet 111 of the water collecting tank 110 is communicated to a sewage pipeline, a water outlet of the dry-submersible dual-purpose sewage pump 120 is communicated to an external sewer pipeline through a collecting pipe 140, and a backwashing pipeline 150 is connected between the water outlet of the dry-submersible dual-purpose sewage pump 120 and the water collecting tank 110. Because the dry-submersible dual-purpose sewage pump 120 is arranged outside the water collecting tank 110, the water collecting tank 110 does not need to be opened during maintenance, the tightness of the water collecting tank 110 can be very high, and the dry-submersible dual-purpose sewage pump 120 is convenient to maintain due to the structure. The motor of the dry-submersible dual-purpose sewage pump 120 adopts H-level insulation, and comprises thermosensitive element monitoring, water leakage protection and the like, so that the reliability of the dry-submersible dual-purpose sewage pump 120 can be improved. The drainage system has large instantaneous flow and more complex use conditions, and the dry-submersible dual-purpose sewage pump 120 can ensure the stable operation of the equipment under complex conditions. The large-channel or strong-cutting dry-submersible dual-purpose sewage pump can be selected. The utility model discloses in set up back flush pipeline 150, can wash the box, prevent impurity deposition in the header tank 110, realize self-cleaning, can effectively reduce the clear number of times of drawing of equipment, also reduce the fault rate of equipment simultaneously.

The drain pipe 130 is provided with a gate valve 160 for controlling the on-off of water flow.

The manifold 140 is provided with a check valve 170.

If the sewage treatment capacity is large, a plurality of water collecting tanks 110 can be used at the same time, each water collecting tank 110 is connected with one dry-submersible dual-purpose sewage pump 120, and then the water outlets of the plurality of dry-submersible dual-purpose sewage pumps 120 are communicated to an external sewer pipe through a collecting pipe 140. The gate valve 160 is arranged on the sewage discharge pipe 130, so that the water collecting tank 110 and the dry-submersible dual-purpose sewage pump 120 in a certain path can be separately overhauled in units, and mutual influence cannot exist. And a gate valve can be added to the check valve 170 and the side, so that the double gate valve design is more beneficial to maintenance.

The water flow of the back flushing pipeline 150 is less than 2% of the water flow of the sewage discharge pipe 130. The precondition for designing the size of the back-flushing pipeline 150 is that the overall performance of the equipment should not be reduced, and it can be said that the flow loss is not more than 2% of the designed flow and the head loss is not more than 1% of the designed head. This requirement can be substantially met as long as it is ensured that the backwash line 150 has a water flow rate of less than 2% of the sewage discharge pipe 130.

The nominal diameter of the pipeline of the back flushing pipeline 150 is not less than 8 mm. The water flow of the back flushing pipeline 150 is ensured to be large enough, so that the water collecting tank 110 can be effectively flushed.

A liquid level meter 112 for collecting a water level signal of the water collecting tank 110 is arranged in the water collecting tank 110.

A floating ball 113 is arranged in the water collecting tank 110. The utility model discloses set up the dual liquid level monitoring of level gauge 112 and floater 113, the security performance is higher.

A barbed catch hook 114 is provided in the water collection tank 110. The claw of the grapple 114 faces the water inlet 111 of the sump 110. The grapple 114 is hung in the water collecting tank 110, the water flow coming from the water collecting tank 110 firstly passes through the grapple 114, and the larger impurities in the sewage are hooked by the grapple 114, so that the sewage can be prevented from entering the dry-submersible dual-purpose sewage pump 120, the dry-submersible dual-purpose sewage pump 120 is prevented from being damaged, and the service life of the dry-submersible dual-purpose sewage pump is prolonged. And also facilitates cleaning of the water collection tank 110.

An overhaul cover plate 115 is arranged on the water collecting tank 110, and the grapple 114 is fixed on the water collecting tank 110. The access panel 115 is fixed through a wing nut, and a handle is designed on the access panel 115 to facilitate removal of the access panel 115 during access. The service cover 115 is provided to facilitate service of the sump 110. The access panel 115 may be transparent and used as a visible window to facilitate timely detection of the trash in the collection tank 110. And a sealing gasket is additionally arranged between the overhaul cover plate 115 and the water collecting tank 110, so that the sealing performance of the water collecting tank 110 is further improved.

Claims

1. The utility model provides an external airtight sewage hoisting device of back flush which characterized in that: including doing latent dual-purpose dredge pump (120) and header tank (110) that are used for storing sewage, do latent dual-purpose dredge pump (120) be located the outside of header tank (110), the delivery port of header tank (110) and do latent dual-purpose dredge pump (120) through blow off pipe (130) intercommunication, water inlet (111) of header tank (110) communicate to the sewage pipe way, the delivery port of doing latent dual-purpose dredge pump (120) communicates to external sewer pipe way through manifold (140), the delivery port of doing latent dual-purpose dredge pump (120) and header tank (110) between be connected with back flush pipeline (150).

2. The external closed sewage lifting device with backwashing according to claim 1, wherein: the sewage discharge pipe (130) is provided with a gate valve (160) for controlling the on-off of water flow.

3. The external closed sewage lifting device with backwashing according to claim 2, wherein: the collecting pipe (140) is provided with a check valve (170).

4. The external closed sewage lifting device with backwashing according to claim 3, wherein: the water flow of the back flushing pipeline (150) is less than 2% of the water flow of the sewage discharge pipe (130).

5. The external closed sewage lifting device with backwashing according to claim 4, wherein: the nominal diameter of the pipeline of the back washing pipeline (150) is not less than 8 mm.

6. The external closed sewage lifting device with backwashing according to claim 5, wherein: and a liquid level meter (112) used for collecting a water level signal of the water collecting tank (110) is arranged in the water collecting tank (110).

7. The external closed sewage lifting device with backwashing according to claim 6, wherein: a floating ball (113) is arranged in the water collecting tank (110).

8. The external closed sewage lifting device with backwashing according to claim 7, wherein: the water collecting tank (110) is internally provided with a barb-shaped grapple (114).

9. The external closed sewage lifting device with backwashing according to claim 8, wherein: the claw of the grapple (114) faces the water inlet (111) of the water collecting tank (110).

10. The external closed sewage lifting device with backwashing according to claim 9, wherein: an overhauling cover plate (115) is arranged on the water collecting tank (110), and the grapple (114) is fixed on the water collecting tank (110).