Sewage pump anti-blocking device in urban landfill leachate treatment process

Abstract

The utility model discloses a sewage pump anti-blocking device in the urban landfill leachate treatment process, and belongs to the field of environmental engineering wastewater treatment. In the anti-blocking device, a shower nozzle structure is arranged at a water inlet of a water inlet pipe, and the top of the shower nozzle structure is in closed connection with the water inlet of the water inlet pipe through a closed connecting piece; the bottom of the shower nozzle structure is provided with a plurality of grid holes for inserting a plurality of gas distribution pipes; the air outlet end of each air distribution pipe is inserted into a grid hole of the shower nozzle structure; the air inlet end of the branch air pipe is communicated with the air outlet joint of the air pipe joint; the air inlet joint of the air pipe joint is communicated with the outlet of the pneumatic valve through a first main air pipe; and an inlet of the pneumatic valve is communicated with air compressor equipment for providing compressed air through a second main air pipe. According to the anti-blocking device, sludge or impurities in the water inlet area of the bottom valve are blown away through the air distribution pipe, so that water can flow into the water inlet of the sewage pump along the blown-away gap, and the blocking phenomenon at the inlet of the sewage pump is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of environmental engineering wastewater treatment, and in particular relates to a sewage pump anti-blocking device in the process of treating urban garbage leachate. Background Art

[0002] Currently, urban waste management, whether through landfill, incineration, or composting, faces the challenge of meeting standards for the treatment of large quantities of landfill leachate. Leachate, influenced by factors such as waste composition, waste production, and seasonal imbalances, exhibits significant fluctuations in both quality and quantity, complex pollutant composition, and high pollution loads. It often contains high concentrations of suspended solids, sludge sediment, and small particles of debris.

[0003] Landfill leachate treatment systems often utilize multi-stage biochemical and physicochemical treatment methods to achieve standard discharge. Multi-stage biochemical treatment systems are equipped with aeration and oxygen supply equipment. Sewage pumps are widely used to transport, transfer, and lift leachate, and are indispensable to the entire leachate treatment system. In practical applications, sewage pump inlets frequently become clogged due to impurities and sludge in the leachate, impacting system operation. Two existing approaches exist to address sewage pump blockages: one is to add a pretreatment system before the leachate inlet pump to ensure inlet water quality. However, pretreatment not only increases investment but is often limited by site conditions, making retrofitting existing leachate treatment systems impractical. Another common approach is to immediately shut down the pump for maintenance and clearing of the obstruction, even removing the pump or inlet device from the cesspool for cleaning. Meanwhile, a backup pump is activated to maintain the normal operation of the entire leachate treatment system. This method requires frequent shutdowns for processing, and the maintenance workers have a high workload. It is also very easy to cause the sewage pump to overload and cause the pump motor to burn out. Sometimes workers are even required to enter the sewage pool for processing, which poses a great safety risk.

[0004] Therefore, it is urgent to design a device that can solve the frequent blockage of sewage pumps in the process of landfill leachate treatment. Utility Model Content

[0005] The purpose of the utility model is to solve the deficiencies of the prior art and provide a sewage pump anti-clogging device for the process of treating urban garbage leachate.

[0006] The specific technical solutions adopted in this utility model are as follows:

[0007] The utility model provides a sewage pump anti-blocking device for the process of treating urban garbage leachate, comprising a shower head structure, a sealed connector, an air distribution pipe, a first main air pipe, an air pipe joint, a second main air pipe and a pneumatic valve;

[0008] The shower head structure is arranged at the water inlet of the water inlet pipe. The top of the shower head structure is hermetically connected to the water inlet of the water inlet pipe through a hermetic connector; a plurality of grid holes for inserting a plurality of sub-air pipes are formed at the bottom of the shower head structure; the air outlet end of each sub-air pipe is inserted into the grid hole of the shower head structure to blow away sludge and impurities in the area of the water inlet of the bottom valve inside the shower head structure; the air inlet end of the sub-air pipe is communicated with the air outlet joint of the air pipe joint, and the air inlet joint of the air pipe joint is communicated with the outlet of the pneumatic valve through a first main air pipe; the inlet of the pneumatic valve is communicated with an air compressor device providing compressed air through a second main air pipe.

[0009] Preferably, the hermetic connector is a flange.

[0010] Preferably, the depth of the sub-air pipe inserted into the grid hole at the bottom of the shower head structure is one-third of the diameter of the check valve.

[0011] Further, the depth of the sub-air pipe inserted into the grid hole at the bottom of the shower head structure is 10 mm.

[0012] Preferably, the sub-air pipe is fixed at the grid hole at the bottom of the shower head structure by a cable tie or a stainless steel clamp.

[0013] Preferably, three sub-air pipes are used, and the included angle between the three sub-air pipes is 120 degrees.

[0014] Further, the air pipe joint is a four-way joint.

[0015] Preferably, the air pressure of the compressed air is 0.6 - 0.8 Mpa.

[0016] Preferably, the sub-air pipe is made of a stainless steel pipe or a corrosion-resistant PU pipe; the diameter is 8 - 10 mm.

[0017] Preferably, the first main air pipe and the second main air pipe are made of a stainless steel pipe or a corrosion-resistant PU pipe; the diameter is 8 - 10 mm.

[0018] The utility model has the following beneficial effects compared with the prior art:

[0019] 1) The anti-blocking device provided by the utility model uses the sub-air pipes to blow away sludge or impurities in the area of the water inlet of the bottom valve, so that water can flow into the water inlet of the sewage pump along the blown gaps, avoiding the blockage phenomenon at the inlet of the sewage pump.

[0020] 2) The anti-blocking device provided by the utility model can avoid the reduction of the water inflow of the sewage pump, not only can effectively reduce the maintenance rate of the sewage pump, but also can reduce the risk probability of the safety hazard in the maintenance of entering the limited space area, and reduce the maintenance cost.

[0021] 3) The anti-clogging device provided by the utility model is simple and convenient to install and operate, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall sewage pump anti-clogging device provided by this embodiment;

[0023] Figure 2 It is a side view of the sewage pump anti-clogging device provided by this embodiment;

[0024] Figure 3 It is a front view of the sewage pump anti-clogging device provided by this embodiment;

[0025] Figure 4 It is a schematic diagram of the overall structure of the shower head provided by this embodiment;

[0026] Figure 5 It is a top view of the shower head structure provided by this embodiment;

[0027] Figure 6 It is a schematic diagram of the overall four-way joint provided by this embodiment;

[0028] In the figure: shower head structure 1, grid holes 101, airtight connector 2, air distribution pipe 3, water inlet pipe 4, first main air pipe 5, air pipe joint 6, second main air pipe 7, pneumatic valve 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below. The technical features in each embodiment of the present utility model can be combined correspondingly without conflict.

[0030] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0031] As Figures 1 to 3 shown, as a preferred embodiment of the specific implementation of the present utility model, this embodiment provides a sewage pump anti-clogging device for the treatment of municipal solid waste leachate, including a shower head structure 1, an airtight connector 2, an air distribution pipe 3, a first main air pipe 5, an air pipe joint 6, a second main air pipe 7, and a pneumatic valve 8.

[0032] The showerhead device at the water inlet of the sewage pump in the prior art is usually used to prevent sundries from entering the pump and avoid blockage, including a filter screen, a check valve, and a connecting pipe. The filter screen is located at the water inlet and is used to filter larger sundries to prevent them from entering the pump. The check valve is installed below the filter screen to prevent water from flowing back and ensure that there is always water in the pump. The connecting pipe is used to connect the filter screen and the check valve to the water inlet of the sewage pump inlet pipe.

[0033] In the device provided by the present utility model, the showerhead structure 1 is arranged at the water inlet of the inlet pipe 4, and the top of the showerhead structure 1 is hermetically connected to the water inlet of the inlet pipe 4 through a hermetic connector 2. In this embodiment, the hermetic connector 2 is a flange. The flange has good sealing performance and can ensure the safe operation of the pipeline system.

[0034] As Figure 4 and Figure 5 shown, a plurality of grid holes 101 for inserting multiple branch air pipes 3 are opened at the bottom of the showerhead structure 1 provided by the present utility model. Three branch air pipes 3 are provided in this embodiment. The three branch air pipes 3 are evenly distributed circumferentially along the bottom of the showerhead structure 1, and the included angle between each two branch air pipes 3 is 120 degrees.

[0035] The air outlet end of each branch air pipe 3 is inserted into the grid hole 101 of the showerhead structure 1 for blowing away the sludge and impurities in the area of the check valve water inlet inside the showerhead structure 1. The depth of the branch air pipe 3 inserted into the grid hole 101 at the bottom of the showerhead structure 1 is one-third of the diameter of the check valve. In this embodiment, the depth of the branch air pipe 3 inserted into the grid hole 101 at the bottom of the showerhead structure 1 is 10 mm. The branch air pipe 3 is fixed at the grid hole 101 at the bottom of the showerhead structure 1 by a cable tie. It should be noted that those skilled in the art can also use a stainless steel clamp to fix the branch air pipe 3 at the grid hole 101 at the bottom of the showerhead structure 1.

[0036] In the device provided by the present utility model, the air inlet end of the branch air pipe 3 is communicated with the air outlet joint of the air pipe joint 6, and the air inlet joint of the air pipe joint 6 is communicated with the outlet of the pneumatic valve 8 through the first main air pipe 5. In this embodiment, since three branch air pipes 3 are used, the air pipe joint 6 is a four-way joint, specifically as Figure 6 shown. The inlet of the pneumatic valve 8 is communicated with an air compressor device providing compressed air through the second main air pipe 7.

[0037] It should be noted that in the device provided by the present utility model, the branch air pipe 3, the first main air pipe 5, and the second main air pipe 7 can be made of stainless steel pipes or corrosion-resistant PU pipes, and the diameter of the air pipes can be 8 - 10 mm. Those skilled in the art can select air pipes with appropriate materials and sizes according to specific working conditions.

[0038] This embodiment also provides a method for using the above sewage pump anti-blocking device, which is as follows:

[0039] 1 - 10 minutes before the inlet pump starts, use the PLC to control the pneumatic valve to open. The second main air pipe 7 is connected to compressed air with a pressure of 0.6 - 0.8 Mpa from the air compressor equipment, and the on-off state of the pneumatic valve 8 is controlled through an electrical signal. Under the action of the pneumatic valve 8, the compressed air is divided into three branches of compressed air through the four-way joint and enters each branch air pipe 3 respectively. The outlet end of the branch air pipe 3 blows air at the bottom valve inlet area to disperse the sludge or impurities in the bottom valve inlet area, allowing water to flow into the inlet along the dispersed gaps, thereby avoiding blockage at the sewage pump inlet.

[0040] The above-described embodiment is only a preferred solution of the present invention, but it is not intended to limit the present invention. Those of ordinary skill in the relevant technical field can still make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An anti-blocking device for sewage pumps in the process of treating municipal solid waste leachate, characterized in that, It includes a showerhead structure (1), a sealed connector (2), a manifold (3), a first main air pipe (5), an air pipe joint (6), a second main air pipe (7), and a pneumatic valve (8); The showerhead structure (1) is arranged at the water inlet of the water inlet pipe (4). The top of the showerhead structure (1) is hermetically connected to the water inlet of the water inlet pipe (4) through the sealed connector (2); a plurality of grid holes (101) for inserting multiple manifolds (3) are formed at the bottom of the showerhead structure (1); the air outlet end of each manifold (3) is inserted into the grid hole (101) of the showerhead structure (1) to blow away the sludge and impurities in the area of the bottom valve water inlet inside the showerhead structure (1); the air inlet end of the manifold (3) is communicated with the air outlet joint of the air pipe joint (6), and the air inlet joint of the air pipe joint (6) is communicated with the outlet of the pneumatic valve (8) through the first main air pipe (5); the inlet of the pneumatic valve (8) is communicated with an air compressor device providing compressed air through the second main air pipe (7).

2. The sewage pump anti-blocking device according to claim 1, characterized in that, The sealed connector (2) is a flange.

3. The sewage pump anti-blocking device according to claim 1, characterized in that, The depth of the manifold (3) inserted into the grid hole (101) at the bottom of the showerhead structure (1) is one-third of the diameter of the check valve.

4. The sewage pump anti-blocking device according to claim 3, characterized in that, The depth of the manifold (3) inserted into the grid hole (101) at the bottom of the showerhead structure (1) is 10 mm.

5. The sewage pump anti-blocking device according to claim 1, characterized in that, The manifold (3) is fixed at the grid hole (101) at the bottom of the showerhead structure (1) by a cable tie or a stainless steel clamp.

6. The sewage pump anti-clogging device according to claim 1, characterized in that, Three manifolds (3) are used, and the angle between the three manifolds (3) is 120 degrees.

7. The sewage pump anti-blocking device according to claim 6, characterized in that, The air pipe joint (6) is a four-way joint.

8. The sewage pump anti-blocking device according to claim 1, characterized in that, The air pressure of the compressed air is 0.6 - 0.8 Mpa.

9. The sewage pump anti-clogging device according to claim 1, characterized in that, The manifold (3) is made of a stainless steel pipe or a corrosion-resistant PU pipe; the diameter is 8 - 10 mm.

10. The sewage pump anti-clogging device according to claim 1, characterized in that, The first main air pipe (5) and the second main air pipe (7) are made of a stainless steel pipe or a corrosion-resistant PU pipe; the diameter is 8 - 10 mm.

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