Sewage treatment and delivery device

Abstract

The application discloses a sewage treatment and conveying device, which comprises a sewage pretreatment unit, a foreign matter separation unit, a spiral conveying unit, an odor control unit and a cleaning unit. The sewage pretreatment unit comprises two sewage pools. The foreign matter separation unit comprises a grid chain, rake nails on the grid chain and a rotating wheel group for driving the grid chain to run. When the grid chain runs, the rake nails extend into the sewage to hook up the foreign matters and send them to a hopper. The spiral conveying unit comprises a cylinder, a spiral, a shaft and a motor. The motor drives the spiral to rotate in the cylinder through the shaft. The cylinder is provided with the hopper corresponding to the foreign matter separation unit, and the end of the cylinder is provided with an inclined slope tray. A foreign matter pool is arranged below the inclined slope tray. The odor control unit comprises an outer cover and an exhaust cylinder. The outer cover seals and covers the aforementioned units, and the exhaust cylinder is arranged on the top of the outer cover. The cleaning unit comprises a first water pipe, and the lower end of the first water pipe is provided with a water spraying hole communicated with the cylinder. The cylinder is provided with a water leakage hole at the bottom of the end, and a water collecting pool is arranged below the cylinder. The water collecting pool is connected with a secondary sewage pool through a drain pipe. The application can well complete the separation and conveying of the foreign matters in the sewage through various different separation and conveying devices.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment and conveying device. Background Technology

[0002] Wastewater treatment equipment typically treats wastewater in an exposed manner, resulting in strong odors emanating from the surrounding area. It primarily filters impurities in the wastewater and uses a single, exposed conveying method for transporting these impurities.

[0003] This exposed treatment and transportation method not only leads to the uncontrolled spread of odors, seriously impacting the air quality of the surrounding environment and threatening the health of operators and nearby residents, but may also limit the site selection of wastewater treatment plants due to excessively strong odors. Simultaneously, a single filtration method is insufficient to efficiently separate impurities of different particle sizes and shapes in wastewater, especially larger solid debris which tends to accumulate in the filtration stage, reducing filtration efficiency and even causing equipment blockage. Furthermore, in the exposed single transportation method, impurities are prone to secondary pollution during transport due to bumps and falls. When treating impurities from multiple wastewater tanks, multiple independent transportation devices are required, increasing equipment purchase and maintenance costs, occupying more space, resulting in a cluttered overall layout of the wastewater treatment plant, and increasing management difficulty. In addition, traditional transportation devices lack effective cleaning mechanisms; after long-term use, residual impurities adhere, breeding bacteria, exacerbating odors, affecting transportation efficiency, and increasing the labor intensity and cost of manual cleaning. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a sewage treatment and conveying device, which effectively separates and conveys impurities in sewage through a variety of different separation and conveying devices.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] A wastewater treatment and conveying device, comprising:

[0007] The wastewater pretreatment unit includes a primary wastewater tank and a secondary wastewater tank, which are connected by pipelines and used for preliminary sedimentation and further treatment of wastewater;

[0008] An impurity separation unit includes a grid chain, rakes mounted on the grid chain, and a set of rotating wheels that drive the grid chain to rotate. The grid chain can rotate under the drive of the rotating wheels, and the rakes extend into the wastewater of the wastewater pretreatment unit along with the grid chain to hook up impurities and rotate them into the corresponding funnel.

[0009] A screw conveyor unit includes a cylinder, a screw, a shaft, and a motor. The output shaft of the motor is connected to the shaft, and the shaft is fixedly connected to the screw. The motor drives the screw to rotate inside the cylinder through the shaft. The cylinder is provided with two funnels corresponding to the impurity separation unit. The end of the cylinder is provided with a sloping tray, and a debris pool is provided below the sloping tray.

[0010] An odor control unit includes an outer cover and an exhaust pipe. The outer cover seals over the wastewater pretreatment unit, the impurity separation unit, and the screw conveyor unit. The exhaust pipe is located on the top of the outer cover and is used to remove odors generated during the operation of the device.

[0011] The cleaning unit includes a first water pipe with multiple spray holes at its lower end. The bottom ends of the spray holes are connected to the cylinder body. The first water pipe is connected to a water source through a second water pipe.

[0012] The water collection and circulation unit includes a water leakage hole located at the bottom of the end of the cylinder, a water collection tank located below the water leakage hole, and the water collection tank being connected to the secondary sewage tank via a drain pipe equipped with a second valve.

[0013] Preferably, in the above technical solution, the impurity separation unit includes:

[0014] The first impurity separation unit, which corresponds to the primary sewage tank, includes a first grid chain, a first rake, and a first rotating wheel assembly. The teeth of the first rotating wheel assembly cooperate with the first grid chain to drive it to rotate in a cycle.

[0015] The second impurity separation unit, which corresponds to the secondary sewage tank, includes a second grid chain, a second rake, and a second set of rotating wheels. The teeth of the second set of rotating wheels cooperate with the second grid chain to drive it to rotate in a cycle.

[0016] Preferably, in the above technical solution, both the first and second rotating wheel groups consist of three rotating wheels. The rotating wheel groups and the grid chain form an L-shaped structure, so that the grid chain first tilts and rises to hook up impurities in the sewage during operation, and then turns and descends into the corresponding funnel.

[0017] Preferably, in the above technical solution, the funnel includes a first funnel and a second funnel, the first funnel corresponds to the output end of the first impurity separation unit, the second funnel corresponds to the output end of the second impurity separation unit, and impurities enter the interior of the cylinder through the first funnel and the second funnel.

[0018] Preferably, in the above technical solution, a first valve is provided on the second water pipe and a second valve is provided on the drain pipe. The first valve and the second valve are intelligent electrically controlled valves, which are electrically connected to the control system.

[0019] Preferably, in the above technical solution, the exhaust pipe is equipped with an odor purification device, and a sealing strip is provided at the connection between the outer cover and the ground.

[0020] Preferably, in the above technical solution, the primary sewage tank and the secondary sewage tank are equipped with a stirring device to ensure that the sewage and the added treatment agent are fully mixed.

[0021] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0022] This invention features an outer casing that covers the wastewater treatment equipment and includes an exhaust pipe to allow for air circulation and to expel some odors into the atmosphere. The wastewater and debris in the wastewater tanks are first separated by a grid-type conveyor belt with rakes to separate larger impurities. A rotating wheel continuously changes the direction of the rakes on the belt. The separated debris is then transported via a relatively sealed screw conveyor. Multiple funnels are designed at different locations on a single conveyor system, allowing impurities separated from multiple wastewater tanks to be transported simultaneously through a single screw conveyor. The conveyor system also features an external cylindrical body with spray nozzles at the top for periodic cleaning, and drainage holes at the bottom to allow the cleaned wastewater to flow into a collection tank, which then flows into a secondary wastewater tank. A sloping tray at the rear of the conveyor allows impurities to slide down into a debris pool. Therefore, this invention effectively separates and transports impurities from wastewater using various separation and conveying devices. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0024] Figure 1 This is a schematic diagram of the wastewater treatment and conveying device of this utility model.

[0025] Wherein: 1-Primary sewage tank; 2-First rotating wheel; 3-First grid chain; 4-First rake; 5-Outer cover; 6-Exhaust pipe; 7-Shaft; 8-Second rotating wheel; 9-Third rotating wheel; 10-First funnel; 11-Spray hole; 12-First water pipe; 13-Fourth rotating wheel; 14-Fifth rotating wheel; 15-Second funnel; 16-First valve; 17-Second water pipe; 18-Slope tray; 19-Miscellaneous waste tank; 20-Collection tank; 21-Second valve; 22-Drain pipe; 23-Leak hole; 24-Spiral; 25-Secondary sewage tank; 26-Sixth rotating wheel; 27-Pipeline; 28-Second rake; 29-Second grid chain; 30-Cylinder; 31-Motor. Detailed Implementation

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0027] like Figure 1As shown, the wastewater treatment and conveying device of this application includes an outer cover 5, with an exhaust pipe 6 installed on the top of the outer cover 5. The outer cover 5 can prevent the odor emitted by wastewater or impurities in the wastewater treatment equipment from escaping into the site environment. The exhaust pipe 6 can discharge the odor into the higher atmosphere and can also ventilate the protective cover 5. The design of the outer cover 5 and the exhaust pipe 6 not only prevents the odor from affecting the surrounding environment, but also the pulling force of the exhaust pipe can effectively enhance airflow. The wastewater in the plant area first flows into the primary wastewater tank 1, which is composed of a first rotating wheel 2, a second rotating wheel 8, a third rotating wheel 9, a first grid chain 3, and a first rake nail, forming an impurity separation and conveying device for the primary wastewater tank 1. The first rotating wheel 2, the second rotating wheel 8, and the third rotating wheel 9 have teeth that fit perfectly with the first grid chain 3. The first rotating wheel 2 is in the sewage in the primary sewage tank 1. The first grid chain 3 rotates continuously around the first rotating wheel 2. The first grid chain 3 has rows of first rakes. The first rakes continuously hook up impurities in the sewage in the primary sewage tank 1 and convey them upward through the first grid chain 3. The second rotating wheel 8 and the third rotating wheel 9 are installed above the screw conveyor. When the first grid chain 3 conveys impurities to the second rotating wheel 8 and the third rotating wheel 9, the first rakes on the first grid chain 3 begin to tilt downward. Especially after the first grid chain 3 reaches the third rotating wheel 9, the tilting direction of the first rakes begins to be downward, so that the impurities on the first grid chain 3 fall into the first funnel 10 under the action of gravity. The first grid chain 3 continuously moves back and forth around the first rotating wheel 2, the second rotating wheel 8, and the third rotating wheel 9, continuously separating and conveying impurities in the primary sewage tank 1. After the impurities in the sewage in the primary sewage tank 1 are initially separated, in order to further separate the impurities in the sewage, the sewage in the primary sewage tank 1 enters the secondary sewage tank 25 through the pipe 27 for secondary separation. Similarly, the impurity separation and conveying device of the secondary sewage tank 25 is composed of the sixth rotating wheel 26, the fourth rotating wheel 13, the fifth rotating wheel 14, the second grid chain 29, and the second rake nail 28. The sixth rotating wheel 26, the fourth rotating wheel 13, and the fifth rotating wheel 14 have teeth that fit perfectly with the second grid chain 29. In the secondary sewage tank 25, the sixth rotating wheel 26 is surrounded by the sewage. The second grid chain 29 rotates continuously around the sixth rotating wheel 26. The rows of second rakes 28 on the second grid chain 29 continuously hook up the impurities in the sewage in the secondary sewage tank 25 and convey them upward through the second grid chain 29 to the fourth rotating wheel 13 and the fifth rotating wheel 14 installed above the screw conveyor. When the second grid chain 29 conveys the impurities to the fourth rotating wheel 13 and the fifth rotating wheel 14, the second rakes 28 on the second grid chain 29 begin to tilt downward. In particular, after the second grid chain 29 reaches the rotating wheel 14, the tilting direction of the second rakes 28 begins to be downward, so that the impurities on the second grid chain 29 fall into the second funnel 15 under the action of gravity. The second grid chain 29 continuously moves back and forth around the sixth rotating wheel 26, the fourth rotating wheel 13, and the fifth rotating wheel 14, continuously separating and conveying the impurities in the secondary sewage tank 25.

[0028] The screw conveyor mainly consists of a motor 31, a shaft 7, a cylinder 30, a screw 24, a first funnel 10, a second funnel 15, a first water pipe 12, a spray hole 11, and a drain hole 23. Under the action of the motor 31, the screw 24 can continuously rotate around the shaft 7 to transport impurities. The screw 24 and the shaft 7 are installed inside the cylinder 30. The first funnel 10 and the second funnel 15, or even more funnels, can be set at different positions above the cylinder 30, so that impurities separated from all places can enter the screw conveyor. When the impurities separated in the primary sewage tank 1 and the secondary sewage tank 25 enter the cylinder 30 through the first funnel 10 and the second funnel 15, respectively, they are gradually transported to the tail end by the screw 24 and fall into the debris pool 19 along the inclined tray 18 at the outlet. Multiple drainage holes 23 are provided at the bottom of the cylinder 30. During the process of conveying debris by the screw device, when the sewage squeezed out from the debris reaches the end of the cylinder 30, the squeezed water can flow into the collection pool 20 through the drainage holes 23 at the bottom, while the sludge in the cylinder is continued to be conveyed by the screw 24 to the tail end and falls into the debris pool 19 along the inclined tray 18 at the outlet. After running for a period of time, the inside of the cylinder becomes dirty. At this time, the first grid chain 3 of the primary sewage tank 1 and the second grid chain 29 of the secondary sewage tank 25 stop running and temporarily stop conveying impurities to the screw conveyor. The first valve 16 is opened, and the relatively pure water after treatment enters the first water pipe 12 through the second water pipe 17 and the first valve 16. There are many water spray holes 11 on the first water pipe 12 that extend into the cylinder 30 of the screw conveyor to spray and wash the inner wall of the cylinder 30 and the screw 24. During the process of cleaning the cylinder 30 and the screw 24 by spraying water, under the rotation of the screw 24 and the flow of water, after the water reaches the end of the cylinder 30, it flows into the collection tank 20 through the drain hole 23 at the bottom. The impurities washed out inside the cylinder are continued to be conveyed by the screw 24 to the tail and fall into the debris tank 19 along the inclined tray 18 at the outlet. Water in the collection tank 20 can flow into the underground secondary sewage tank 25 through the second valve 21 and the drain pipe 22. After passing through the secondary sewage tank 25, it enters the next sewage treatment process for further treatment. Finally, the sewage is treated into qualified reclaimed water and then used or discharged.

[0029] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various different choices and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A sewage treatment and conveying device, characterized in that, include: The wastewater pretreatment unit includes a primary wastewater tank (1) and a secondary wastewater tank (25), which are connected by a pipe (27) for preliminary sedimentation and further treatment of wastewater. An impurity separation unit includes a grid chain, rakes mounted on the grid chain, and a set of rotating wheels that drive the grid chain to rotate. The grid chain can rotate under the drive of the rotating wheels, and the rakes extend into the wastewater of the wastewater pretreatment unit along with the grid chain to hook up impurities and rotate them into the corresponding funnel. The screw conveyor unit includes a cylinder (30), a screw (24), a shaft (7), and a motor (31). The output shaft of the motor (31) is connected to the shaft (7), and the shaft (7) is fixedly connected to the screw (24). The motor (31) drives the screw (24) to rotate inside the cylinder (30) through the shaft (7). The cylinder (30) is provided with two funnels corresponding to the impurity separation unit. The end of the cylinder (30) is provided with a ramp tray (18), and a debris pool (19) is provided below the ramp tray (18). Odor control unit, which includes an outer cover (5) and an exhaust pipe (6), the outer cover (5) sealingly covers the sewage pretreatment unit, the impurity separation unit and the screw conveyor unit, and the exhaust pipe (6) is located on the top of the outer cover (5) for discharging odors generated during the operation of the device; The cleaning unit includes a first water pipe (12), the lower end of which is provided with a plurality of water spray holes (11), the bottom end of which is connected to the cylinder (30), and the first water pipe (12) is connected to a water source through a second water pipe (17). The water collection and circulation unit includes a water leakage hole (23) located at the bottom of the end of the cylinder (30), a water collection tank (20) located below the water leakage hole (23), and the water collection tank (20) is connected to the secondary sewage tank (25) through a drain pipe (22) with a second valve (21).

2. The wastewater treatment and conveying device according to claim 1, characterized in that, The impurity separation unit includes: The first impurity separation unit, which corresponds to the primary sewage tank (1), includes a first grid chain (3), a first rake (4) and a first rotating wheel assembly. The teeth of the first rotating wheel assembly cooperate with the first grid chain (3) to drive it to rotate in a cycle. The first impurity separation unit, which corresponds to the secondary sewage tank (25), includes a second grid chain (29), a second rake (28), and a second rotating wheel assembly. The teeth of the second rotating wheel assembly cooperate with the second grid chain (29) to drive it to rotate in a cycle.

3. The wastewater treatment and conveying device according to claim 2, characterized in that, Both the first and second impeller groups consist of three impellers. The impeller groups and the grid chain form an L-shaped structure, so that the grid chain first tilts and rises to hook up impurities in the sewage during operation, and then turns and descends into the corresponding funnel.

4. The wastewater treatment and conveying device according to claim 2, characterized in that, The funnel includes a first funnel (10) and a second funnel (15). The first funnel (10) corresponds to the output end of the first impurity separation unit, and the second funnel (15) corresponds to the output end of the second impurity separation unit. Impurities enter the interior of the cylinder (30) through the first funnel (10) and the second funnel (15).

5. The wastewater treatment and conveying device according to claim 1, characterized in that, The second water pipe (17) is equipped with a first valve (16), and the drain pipe (22) is equipped with a second valve (21). The first valve (16) and the second valve (21) are intelligent electric control valves, which are electrically connected to the control system.

6. The wastewater treatment and conveying device according to claim 1, characterized in that, The exhaust pipe (6) is equipped with an odor purification device inside, and a sealing strip is provided at the connection between the outer cover (5) and the ground.

7. The wastewater treatment and conveying device according to claim 1, characterized in that, The primary sewage tank (1) and the secondary sewage tank (25) are equipped with stirring devices to ensure that the sewage is fully mixed with the added treatment agents.

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