A device for self-weight decontamination and centralized transportation of waste.

Abstract

This application discloses a device for self-weight decontamination and centralized transport of wastewater, belonging to the field of wastewater treatment technology. In particular, it relates to a device for self-weight decontamination and centralized transport of wastewater. This device uses a "U"-shaped arrangement to allow the coarse bar screen and the internal inlet bar screen to share a single motor control and a single conveying mechanism to transport the cleaned wastewater. Its compact structure saves materials, reduces equipment power, and achieves better economic benefits. Furthermore, the elevation difference within the waterway generates a high water flow velocity, which removes sand under the action of the water flow, eliminating the need for the stirring motor of the cyclone grit chamber, reducing equipment power, and saving on procurement, operation, and maintenance costs.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a device for gravity-based decontamination and centralized transport of waste. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Modern wastewater treatment technologies can be classified into primary, secondary, and tertiary treatment according to the degree of treatment, generally determined based on the water quality and the intended use of the treated water. Based on their methods, they can be categorized into physical, biological, and chemical methods.

[0003] Physical methods: These methods primarily utilize physical processes to separate non-dissolved substances from wastewater without altering its chemical properties. Commonly used methods include gravity separation, centrifugal separation, reverse osmosis, and air flotation.

[0004] Biological methods: These methods utilize the metabolic functions of microorganisms to decompose and oxidize dissolved or colloidal organic matter in wastewater into stable inorganic substances, thus purifying the wastewater. Commonly used methods include activated sludge processes and biofilm processes. Biological methods achieve a higher degree of treatment than physical methods.

[0005] Chemical methods: These methods utilize chemical reactions to treat or recover dissolved or colloidal substances in wastewater, and are mostly used for industrial wastewater. Commonly used methods include coagulation, neutralization, oxidation-reduction, and ion exchange. Chemical treatment methods offer good results but are expensive, and are often used for further treatment of effluent after biological treatment to improve water quality.

[0006] Before wastewater enters the biological treatment tank, it generally needs to be removed by physical methods to remove impurities. For example, a 5mm coarse screen is first used to remove suspended solids, followed by a cyclone grit chamber to remove sand, and finally a 1mm inner inlet screen to remove even finer debris. Traditional designs arrange these three devices in a linear fashion, resulting in a dispersed structure. The removed debris is transported separately by screw conveyors, requiring multiple conveyors, which are power-intensive, consume a lot of electricity, and are economically inefficient. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wastewater filtration technology that is compact, saves materials, and reduces equipment power.

[0008] The objective of this invention is achieved through the following technical solution:

[0009] A device for self-weight decontamination and centralized transport of waste includes: a shell, a coarse bar screen, a sand removal mechanism, an internal inlet bar screen, and a wastewater discharge mechanism; the sand removal mechanism includes a sand settling chamber with a sand settling chamber inlet and a sand settling chamber outlet; the shell has an inclined section; the sand settling chamber is located at one end of the shell, with both the sand settling chamber inlet and outlet located on the lower side of the inclined section; an inlet pipe and an outlet pipe are respectively connected to the two sides of the other end of the shell; a water channel baffle is provided between the inlet pipe and the outlet pipe, and the shell forms a first water channel and a second water channel through the water channel baffle. The inlet pipe is connected to the grit chamber inlet via the first water channel; the outlet pipe is connected to the grit chamber outlet via the second water channel; the coarse bar screen is installed on the first water channel, and the inner-flow bar screen is installed on the second water channel; after the sewage enters through the inlet pipe, it passes through the coarse bar screen, the grit chamber, and the inner-flow bar screen in sequence, and then flows out through the outlet pipe; the rotating shaft built into the coarse bar screen and the rotating shaft built into the inner-flow bar screen are set on the same axis and connected in parallel, and are also connected to the first motor; the sewage discharge mechanism is used to collect the sewage separated by the coarse bar screen and the inner-flow bar screen.

[0010] Specifically, the sewage discharge mechanism includes a first conveying mechanism and a high-drainage press; the first conveying mechanism is connected to the high-drainage press via a pipe; the first conveying mechanism is mounted on the housing and positioned below the sewage discharge ports of the coarse bar screen and the internal inlet bar screen.

[0011] More specifically, a discharge plate is provided below the discharge port of the coarse bar screen, and one end of the discharge plate is connected to the side of the first conveying mechanism.

[0012] More specifically, the internal flow bar screen includes a nozzle and a filter belt. The nozzle is used to wash the filter belt. A drain trough is provided below the nozzle and is connected to the first conveying mechanism.

[0013] More specifically, the first conveying mechanism is a screw conveyor.

[0014] The above-mentioned settling tank includes a main tank and a settling hopper; the settling tank inlet and the settling tank outlet are located on the main tank; the settling hopper is located at the bottom of the main tank and is connected to the main tank.

[0015] Furthermore, the sand discharge mechanism also includes a sand-water separator, a blower, and a pipeline assembly; the pipeline assembly includes a main air duct, a sand washing pipe, a sand lifting pipe, and a sand discharge pipe; one end of the main air duct is connected to the blower, and the other end of the main air duct is connected to one end of the sand washing pipe and the sand lifting pipe, respectively; one end of the sand discharge pipe is connected to the sand-water separator; the other ends of the sand washing pipe, the sand lifting pipe, and the sand discharge pipe are all located inside the sand settling hopper.

[0016] Furthermore, the sand washing pipe is used to deliver airflow to the bottom of the sand settling hopper; the sand discharge pipe is equipped with a bell mouth; and the sand lifting pipe is used to deliver airflow into the bell mouth.

[0017] Furthermore, a sand washing valve is installed on the sand washing pipe; a sand lifting valve is also installed on the sand lifting pipe.

[0018] Furthermore, the sand-water separator includes a second conveying mechanism for conveying sand and gravel within the sand-water separator.

[0019] The beneficial effects achieved by this invention are as follows: The device for self-weight decontamination and centralized conveying of waste in this application, through a "U"-shaped arrangement, allows the coarse bar screen and the inner inlet bar screen to share a single motor control and a single conveying mechanism to transport the cleaned waste. Its structure is compact, saves materials, reduces equipment power, and can achieve better economic benefits. In addition, the elevation difference set in the waterway generates a large water flow velocity, and the sand is removed under the action of the water flow, eliminating the need for the stirring motor of the cyclone sand setter, reducing equipment power, and saving procurement, operation and maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a first three-dimensional structural schematic diagram of a device for self-weight decontamination and centralized transportation of waste according to an embodiment of this application;

[0022] Figure 2 This is a second three-dimensional structural schematic diagram of a device for self-weight decontamination and centralized transportation of waste according to an embodiment of this application;

[0023] Figure 3 This is a third perspective structural diagram of a device for self-weight decontamination and centralized transportation of waste according to an embodiment of this application;

[0024] Figure 4 This is a three-dimensional structural schematic diagram of the sedimentation separation mechanism of a gravity-fed decontamination and centralized transportation device according to an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the installation structure of an internal inlet bar screen machine, which is a device for self-weight decontamination and centralized transportation of waste according to an embodiment of this application.

[0026] Figure 6 This is a schematic diagram of the internal inlet bar screen of a device for self-weight decontamination and centralized transportation of waste according to an embodiment of this application;

[0027] in, Figures 1 to 6 This includes:

[0028] 1. Shell; 11. Waterway baffle; 1A. First waterway; 1B. Second waterway;

[0029] 12. Inlet pipe; 13. Outlet pipe;

[0030] 141. First inclined plate; 142. Inlet baffle; 14a. Settler inlet;

[0031] 151. Second inclined plate; 152. Outlet baffle; 15a. Settler outlet;

[0032] 16. Stop baffle; 16a. Filter inlet;

[0033] 2. Coarse bar screen; 21. Coarse bar screen belt; 22. Discharge plate;

[0034] 3. Grit chamber (cyclone grit chamber); 31. Main tank; 32. Grit hopper;

[0035] 4. Internal flow bar screen; 41. First motor; 411. Connecting shaft; 42. Filter belt; 43. Nozzle;

[0036] 4b. Filter outlet;

[0037] 5. Blower; 51. Main air duct; 511. Main valve; 52. Sand washing pipe; 521. Sand washing valve;

[0038] 53. Sand lifting pipe; 531. Sand lifting valve; 54. Sand discharge pipe;

[0039] 6. Sand-water separator; 61. Second conveying mechanism; 62. First waste cylinder;

[0040] 7. First conveying mechanism (screw conveyor); 71. Second motor; 72. Sewage discharge trough;

[0041] 8. High-drainage press; 81. Second waste cylinder;

[0042] 9. Frame. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] Example 1

[0045] One implementation method of the gravity-based decontamination and centralized transportation device of this application, such as Figures 1 to 6As shown, it includes: a housing 1, a coarse bar screen 2, a sand discharge mechanism, an internal inlet bar screen 4, a sewage discharge mechanism, and a frame 9; wherein, the housing 1 is mounted on the frame 9, and the housing 1 is also provided with an inclined part.

[0046] The sand removal mechanism includes a sand settling chamber 3, a sand-water separator 6, and a blower 5; the sand-water separator 6 and the blower 5 are respectively connected to the sand settling chamber 3 through corresponding pipeline groups. The sand settling chamber 3 is provided with a sand settling chamber inlet 14a and a sand settling chamber outlet 15a.

[0047] The sedimentation tank 3 is located at one end of the shell 1, and the sedimentation tank inlet 14a and the sedimentation tank outlet 15a are both located on the lower side of the inclined part; the other end of the shell 1 is connected to the two sides of the inlet pipe 12 and the outlet pipe 13 respectively; a water channel partition 11 is provided between the inlet pipe 12 and the outlet pipe 13, and the shell 1 forms a first water channel 1A and a second water channel 1B through the water channel partition 11; the inlet pipe 12 is connected to the sedimentation tank inlet 14a through the first water channel 1A; the outlet pipe 13 is connected to the sedimentation tank outlet 15a through the second water channel 1B, forming a U-shaped water channel on the shell 1.

[0048] The coarse screen 2 is installed on the first channel 1A, and the inlet screen 4 is installed on the second channel 1B. The inclined sections are specifically installed between the coarse screen 2 and the sediment inlet 14a, and between the inlet screen 4 and the sediment outlet 15a, forming corresponding inclined channels.

[0049] After entering through the inlet pipe 12, the sewage passes through the coarse bar screen 2, the grit chamber 3 and the internal inlet bar screen 4 in sequence, and then flows out through the outlet pipe 13.

[0050] The rotating shafts built into the coarse bar screen 2 and the inner inlet bar screen 4 are coaxial and connected, and are also connected to a first motor 41. Driven by the first motor 41, the coarse bar screen 2 and the inner inlet bar screen 4 simultaneously separate wastewater from pollutants. A sewage discharge mechanism is used to collect the pollutants separated by the coarse bar screen 2 and the inner inlet bar screen 4.

[0051] Specifically, the settling tank 3 includes a main tank 31 and a settling hopper 32; the settling tank inlet 14a and the settling tank outlet 15a are located on the main tank 31; the settling hopper 32 is located at the bottom of the main tank 31 and is connected to the main tank 31.

[0052] In this embodiment, the grit chamber inlet 14a is located on the outside of the grit chamber 3, i.e., on the tangential side; and an inlet baffle 142 is provided above the grit chamber inlet 14a, with a first inclined plate 141 between the grit chamber inlet 14a and the waterway baffle 11. At this time, sewage enters the grit chamber 3 tangentially through the grit chamber inlet 14a, forming a rotating water flow. Combined with the water flow acceleration generated by the inclined waterway between the coarse screen machine 2 and the grit chamber inlet 14a, centrifugal force can be generated to separate the sand and gravel in the sewage and let them sink into the grit chamber 32. This structure eliminates the need for a stirring motor while also achieving the effect of water flow acceleration, effectively reducing the power of the equipment.

[0053] The grit chamber outlet 15a is located on one side of the waterway baffle 11. An outlet baffle 152 is provided above the grit chamber outlet 15a. A second inclined plate 151 is provided between the grit chamber outlet 15a and the edge of the shell 1. Combined with the inclined waterway between the internal inlet bar screen 4 and the grit chamber outlet 15a, some of the grit that has not been removed in the sewage is flushed out from the grit chamber outlet 15a into the corresponding inclined waterway. Due to gravity, it can slide back into the grit hopper 32 inside the grit chamber 3, thereby obtaining a better grit removal effect.

[0054] More specifically, the piping assembly includes a main air duct 51, a sand washing pipe 52, a sand lifting pipe 53, and a sand discharge pipe 54. One end of the main air duct 51 is connected to the blower 5, and the other end of the main air duct 51 is connected to one end of the sand washing pipe 52 and the sand lifting pipe 53, respectively. One end of the sand discharge pipe 54 is connected to the sand-water separator 6. The other ends of the sand washing pipe 52, the sand lifting pipe 53, and the sand discharge pipe 54 are all located inside the settling hopper 32. The opening of the sand washing pipe 52 points downwards towards the settling hopper 32, and is used to deliver airflow to the bottom of the settling hopper 32. The sand discharge pipe 54 has a bell-shaped opening. The opening of the sand lifting pipe 53 is located inside the bell-shaped opening, with the opening pointing upwards, and is used to deliver airflow into the bell-shaped opening. The main air duct 51 is equipped with a main valve 511, and the sand washing pipe 52 is also equipped with a sand washing valve 521; the sand lifting pipe 53 is also equipped with a sand lifting valve 531. Among them, the sand washing valve 521 and the sand lifting valve 531 are both solenoid valves.

[0055] Blower 6 outputs high-pressure air, which is delivered to sand washing pipe 52 or sand lifting pipe 53 through main air duct 51. When sand washing valve 521 is open and sand lifting valve 531 is closed, the sand at the bottom of sand settling hopper 32 is flushed through sand washing pipe 52, loosening the sand particles deposited in sand settling hopper 32. Then, sand washing valve 521 is closed and sand lifting valve 531 is opened, and high-pressure air from blower 6 is ejected through sand lifting pipe 53, using air pressure to push sand and gravel towards sand discharge pipe 54. Sand discharge pipe 54 sends sand and gravel containing wastewater to sand-water separator 6 for sand-water separation through connected pipes. Sand-water separator 6 includes a second conveying mechanism 61 for conveying sand and gravel in sand-water separator 6 to first waste cylinder 61. The second conveying mechanism 61 is a screw conveyor.

[0056] More specifically, the sewage discharge mechanism includes a first conveying mechanism 7, a sewage discharge trough 72, and a high-drainage press 8; the sewage discharge trough 72 is installed on the first conveying mechanism 7, and the first conveying mechanism 7 is connected to the high-drainage press 8 through a pipe.

[0057] The coarse bar screen 2 includes a coarse bar belt 21, a discharge plate 22, a first built-in rotating shaft, and a first discharge port. The built-in rotating shaft of the coarse bar screen 2 drives the coarse bar belt 21 to move, transporting larger solid wastes in the sewage upwards to the first discharge port. The discharge plate 22 is located below the first discharge port, and one end is connected to the side of the first conveying mechanism 7. Solid wastes discharged from the first discharge port slide down through the discharge plate 22 into the first conveying mechanism 7.

[0058] The internal flow bar screen 4 includes a first motor 41, a filter belt 42, a nozzle 43, a second built-in rotating shaft, and a second drain outlet. The first motor 41 is connected to the second built-in rotating shaft and is used to replace the movement of the filter belt 42. At the same time, the second built-in rotating shaft is connected to the first built-in rotating shaft through a connecting shaft 411. The connecting shaft 411 includes a coupling, an acceleration gear, or a reduction gear.

[0059] The filter belt 42 is used to filter sewage; the spray pipe 43 is located on the side of the second sewage outlet, and the spray pipe 43 has several small holes facing the filter belt 42 for rinsing the filter belt 42 at the second sewage outlet. The sewage trough 72 is located below the second sewage outlet. Under the action of the rinsing water, the dirt on the filter belt 42 is washed into the sewage trough 72 and flows out with the rinsing water to the first conveying mechanism 7.

[0060] In this system, by setting a stop baffle 16, the filter inlet 16a of the internal flow bar screen 4 is located on the side of the second waterway 1B. Wastewater enters from the filter inlet 16a, is filtered by the filter belt 42, removes finer and smaller impurities, and then flows out from the filter outlet 4b.

[0061] More specifically, the first conveying mechanism 7 is a screw conveyor, and the transmission is achieved by the rotation of the second motor 71. The high-drainage press 8 has a built-in third conveying mechanism, which is used to transfer sand, gravel, debris, etc. in the high-drainage press 8 to the second waste cylinder 81. Similarly, the third conveying mechanism is also a screw conveyor.

[0062] Furthermore, the bottom of both the sand-water separator 6 and the high-drainage press 8 is connected to a sludge collection pipe for collecting wastewater from the sand-water separator 6 and the high-drainage press 8.

[0063] In another embodiment, if two waterways need to be arranged for one to be in use and one to be in standby, a "UU" shaped structure can be used for the arrangement. When multiple waterways need to be arranged, multiple "U" shaped structures can be used for the arrangement.

[0064] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the appended claims.

Claims

1. A device for self-weight decontamination and centralized transportation of waste, characterized in that, include: Shell, coarse bar screen, sand removal mechanism, internal inlet bar screen, and sewage discharge mechanism; The sand discharge mechanism includes a sand setter, which includes a main tank and a sand settling hopper. The sand setter has a sand settling inlet and a sand settling outlet. The shell has an inclined section. The sedimentation tank is located at one end of the shell, and both the sedimentation tank inlet and outlet are located on the lower side of the inclined portion; the other end of the shell is connected to an inlet pipe and an outlet pipe on both sides respectively. A water channel baffle is provided between the inlet pipe and the outlet pipe, and the shell forms a first water channel and a second water channel through the water channel baffle; the inlet pipe is connected to the inlet of the grit chamber through the first water channel; the outlet pipe is connected to the outlet of the grit chamber through the second water channel. The coarse screen is installed on the first waterway, and the internal inlet screen is installed on the second waterway; after the sewage enters from the inlet pipe, it passes through the coarse screen, the grit chamber and the internal inlet screen in sequence, and then flows out from the outlet pipe. The rotating shaft built into the coarse bar screen and the rotating shaft built into the inner inlet bar screen are set on the same axis and connected to each other, and are also connected to the first motor. The sewage discharge mechanism is used to collect the sewage separated by the coarse bar screen and the internal flow bar screen; The sand removal mechanism also includes a sand-water separator, a blower, and a pipeline assembly; The pipeline assembly includes a main air duct, a sand washing pipe, a sand lifting pipe, and a sand discharge pipe; One end of the main air duct is connected to the blower, and the other end of the main air duct is connected to one end of the sand washing pipe and the sand lifting pipe respectively; one end of the sand discharge pipe is connected to the sand-water separator. The other ends of the sand washing pipe, sand lifting pipe, and sand discharge pipe are all located inside the settling hopper.

2. The device for self-weight decontamination and centralized transportation of waste according to claim 1, characterized in that: The sewage discharge mechanism includes a first conveying mechanism and a high-drainage press; the first conveying mechanism is connected to the high-drainage press via a pipeline. The first conveying mechanism is disposed on the housing and below the discharge ports of the coarse bar screen and the inner inlet bar screen.

3. The device for self-weight decontamination and centralized transportation of waste according to claim 2, characterized in that: The coarse bar screen is provided with a discharge plate below the discharge port, and one end of the discharge plate is connected to the side of the first conveying mechanism.

4. The device for self-weight decontamination and centralized transportation of waste according to claim 3, characterized in that: The internal flow bar screen includes a nozzle and a filter belt. The nozzle is used to rinse the filter belt. A drain trough is provided below the nozzle and is connected to the first conveying mechanism.

5. The device for self-weight decontamination and centralized transportation of waste according to claim 4, characterized in that: The first conveying mechanism is a screw conveyor.

6. A device for gravity-based decontamination and centralized transport of waste as described in any one of claims 1 to 5, characterized in that: The inlet and outlet of the settling tank are located on the main tank; The settling hopper is located at the bottom of the main tank and is connected to the main tank.

7. The device for gravity-based decontamination and centralized transportation of waste according to claim 6, characterized in that: The sand washing pipe is used to deliver airflow to the bottom of the settling hopper; The sand discharge pipe is equipped with a flared opening; The sand-lifting pipe is used to deliver airflow into the flared mouth.

8. The device for gravity-based decontamination and centralized transportation of waste as described in claim 7, characterized in that: The sand washing pipe is also equipped with a sand washing valve; The sand-lifting pipe is also equipped with a sand-lifting valve.

9. The device for self-weight decontamination and centralized transportation of waste according to claim 8, characterized in that: The sand-water separator includes a second conveying mechanism for conveying sand and gravel within the sand-water separator.

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