Sludge discharge device for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment sludge discharge device which comprises a settling tank, an extrusion cylinder and a sludge discharge component, a supporting frame is arranged at the lower end of the settling tank, a feeding port is formed in the upper end of the settling tank, a water discharging pipe for discharging sewage is arranged on one side of the settling tank, a sludge discharging pipe for discharging sludge is arranged at the lower end of the settling tank, a sludge discharging assembly is arranged on one side of the settling tank, an extrusion cylinder is arranged on one side of the sludge discharging pipe, and a filter cylinder for filtering sewage is arranged on the inner side of the extrusion cylinder. According to the device, the driving motor is started and drives the variable-pitch spiral blade to rotate, the variable-pitch spiral blade drives sludge in the extrusion cylinder to move, the pitch of the variable-pitch spiral blade is gradually reduced, and the sludge is gradually compressed, so that water in sewage is discharged, and the water is discharged from the water outlet pipe after being filtered by the filter cylinder; the sludge moves to the sludge outlet pipe along with the variable-pitch spiral blade to be discharged, so that the water content of the sludge is reduced, the resource waste is avoided, and the resource utilization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment sludge discharge device. 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. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering. It is also increasingly entering the daily lives of ordinary people. As people use water resources more and more, a certain amount of wastewater is generated when using water sources. Direct discharge will pollute the environment and requires treatment. Sludge is generated during the treatment process and needs to be discharged separately.

[0003] Existing wastewater treatment sludge discharge devices do not completely separate sludge from water, resulting in sludge with high water content. Sludge with high water content is prone to producing odors and is also prone to the growth of bacteria and other harmful organisms, making it difficult to treat stably and increasing health risks. Sludge with high water content requires more time and energy for heating and drying. At the same time, the excessive water content in the sludge leads to resource waste. Summary of the Invention

[0004] To address the technical problems of existing sewage treatment sludge discharge devices, such as incomplete separation of sludge and water, high sludge moisture content, easy generation of odor, easy growth of bacteria and other harmful organisms, increasing health risks, and excessive water content in the sludge leading to resource waste, this utility model provides a sewage treatment sludge discharge device.

[0005] The technical solution of this utility model is as follows: a sewage treatment sludge discharge device, including a sedimentation tank, a squeezing cylinder, and a sludge discharge assembly; a support frame is provided at the lower end of the sedimentation tank, a feed inlet is provided at the upper end of the sedimentation tank, a drain pipe for discharging sewage is provided on one side of the sedimentation tank, a sludge discharge pipe for discharging sludge is provided at the lower end of the sedimentation tank, a sludge discharge assembly is provided on one side of the sedimentation tank, a squeezing cylinder is provided on one side of the sludge discharge pipe, a filter cylinder for filtering sewage is provided inside the squeezing cylinder, a drive motor is provided on one side of the squeezing cylinder, a variable pitch spiral blade for squeezing sludge is provided at the output end of the drive motor, a sludge outlet pipe is provided on one side of the squeezing cylinder, and a water outlet pipe is provided on one side of the squeezing cylinder.

[0006] Preferably, a groove is provided at the corresponding position of the extrusion cylinder and the variable pitch helical blade, and the variable pitch helical blade is rotatably connected inside the groove of the extrusion cylinder.

[0007] As a preferred option, the pitch of the variable-pitch helical blades gradually decreases from the sludge discharge pipe to the sludge outlet pipe, thereby gradually compressing the sludge.

[0008] Preferably, the sludge discharge assembly includes a self-locking motor, a self-locking motor is provided on one side of the sedimentation tank, a limit turntable is provided at the output end of the self-locking motor, a toggle block is provided on one side of the limit turntable, a Geneva plate is provided on one side of the sedimentation tank, a rotating shaft is provided inside the Geneva plate, a scraper for conveying sludge is provided outside the rotating shaft, and a filter plate for filtering wastewater is provided on one side of the sedimentation tank.

[0009] Preferably, a groove is provided at the corresponding position of the Geneva disc and the toggle block, and the toggle block is movably connected inside the groove of the Geneva disc.

[0010] Preferably, a groove is provided at the corresponding position of the sedimentation tank and the rotating shaft, and the rotating shaft is rotatably connected inside the sedimentation tank groove.

[0011] Preferably, multiple sets of scrapers are provided, and the multiple sets of scrapers are arranged in a circumferential array on the outside of the rotating shaft.

[0012] The beneficial effects of this utility model are as follows: Compared with traditional sewage treatment sludge discharge devices, where sludge and water are not completely separated, the sludge has a high water content, easily produces odors, and is prone to the growth of bacteria and other harmful organisms, increasing health risks, and the high water content in the sludge leads to resource waste, this device starts a drive motor, which drives the variable pitch spiral blades to rotate. The variable pitch spiral blades move the sludge in the compression cylinder. As the pitch of the variable pitch spiral blades gradually decreases, the sludge is gradually compressed, allowing the water in the sewage to be discharged. After filtration through the filter cylinder, the water is discharged from the outlet pipe, while the sludge moves with the variable pitch spiral blades to the sludge outlet pipe for discharge, reducing the water content of the sludge, avoiding resource waste, and improving resource utilization efficiency. Attached Figure Description

[0013] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0014] Figure 2 The diagram shown is another three-dimensional structural schematic of this utility model;

[0015] Figure 3 The diagram shown is a cross-sectional view of the present invention.

[0016] Figure 4 The diagram shown is a cross-sectional view of the combined extrusion cylinder, filter cylinder, drive motor, variable pitch spiral blades, mud outlet pipe and water outlet pipe of this utility model.

[0017] Figure 5 The diagram shown is a cross-sectional view of the sludge removal component of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Sedimentation tank; 2. Support frame; 3. Feed inlet; 4. Drain pipe; 5. Sludge discharge pipe; 601. Extrusion cylinder; 602. Filter cylinder; 603. Drive motor; 604. Variable pitch spiral blades; 605. Sludge discharge pipe; 606. Water discharge pipe; 701. Self-locking motor; 702. Limiting turntable; 703. Actuating block; 704. Geneva disc; 705. Rotating shaft; 706. Scraper; 707. Filter plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 - Figure 5 This utility model provides an embodiment: a sewage treatment sludge discharge device, including a sedimentation tank 1, a pressing cylinder 601, and a sludge discharge assembly; a support frame 2 is provided at the lower end of the sedimentation tank 1, a feed inlet 3 is provided at the upper end of the sedimentation tank 1, a drain pipe 4 for discharging sewage is provided on one side of the sedimentation tank 1, a sludge discharge pipe 5 for discharging sludge is provided at the lower end of the sedimentation tank 1, a sludge discharge assembly is provided on one side of the sedimentation tank 1, a pressing cylinder 601 is provided on one side of the sludge discharge pipe 5, a filter cylinder 602 for filtering sewage is provided inside the pressing cylinder 601, a drive motor 603 is provided on one side of the pressing cylinder 601, a variable pitch spiral blade 604 for pressing sludge is provided at the output end of the drive motor 603, a sludge outlet pipe 605 is provided on one side of the pressing cylinder 601, a water outlet pipe 606 is provided on one side of the pressing cylinder 601, and grooves are opened at corresponding positions of the pressing cylinder 601 and the variable pitch spiral blade 604. The spiral blade 604 is rotatably connected to the inside of the groove of the extrusion cylinder 601. The grooves at the corresponding positions of the extrusion cylinder 601 and the variable pitch spiral blade 604 limit the rotation of the variable pitch spiral blade 604 inside the groove. The pitch of the variable pitch spiral blade 604 gradually decreases from the sludge discharge pipe 5 to the sludge outlet pipe 605, forming a gradual compression of the sludge. The sludge enters the extrusion cylinder 601 through the sludge discharge pipe 5, and this cycle continues. Then, the drive motor 603 is started, which drives the variable pitch spiral blade 604 to rotate. The variable pitch spiral blade 604 moves the sludge in the extrusion cylinder 601. As the pitch of the variable pitch spiral blade 604 gradually decreases, the sludge is gradually compressed, allowing the water in the sewage to be discharged. After being filtered by the filter cylinder 602, the water is discharged from the water outlet pipe 606, and the sludge moves with the variable pitch spiral blade 604 to the sludge outlet pipe 605 for discharge.

[0021] Please see Figure 2 , Figure 3 , Figure 5In this embodiment, the sludge discharge assembly includes a self-locking motor 701. A self-locking motor 701 is located on one side of the sedimentation tank 1. A limit turntable 702 is located at the output end of the self-locking motor 701. A toggle block 703 is located on one side of the limit turntable 702. A Geneva plate 704 is located on one side of the sedimentation tank 1. A rotating shaft 705 is located inside the Geneva plate 704. A scraper 706 for conveying sludge is located outside the rotating shaft 705. A filter plate 707 for filtering wastewater is located on one side of the sedimentation tank 1. Grooves are formed at corresponding positions of the Geneva plate 704 and the toggle block 703. 3. The Geneva plate 704 is connected to the inside of the groove. The groove is opened at the corresponding position of the Geneva plate 704 and the toggle block 703, so that the toggle block 703 has a limiting effect when it moves inside the groove. The sedimentation tank 1 has a groove at the corresponding position of the rotating shaft 705. The rotating shaft 705 is rotatably connected to the inside of the sedimentation tank 1. The groove is opened at the corresponding position of the sedimentation tank 1 and the rotating shaft 705, so that the rotating shaft 705 has a limiting effect when it rotates inside the groove. Multiple sets of scrapers 706 are provided, and multiple sets of scrapers 706 are arranged in a circumferential array on the outside of the rotating shaft 705.

[0022] During operation, wastewater is added to sedimentation tank 1 through inlet 3. The self-locking motor 701 is then started, driving the limit turntable 702 to rotate. The limit turntable 702 drives the actuating block 703 to rotate, which in turn drives the Geneva disc 704 to rotate. The Geneva disc 704 drives the rotating shaft 705 to rotate, which in turn drives the scraper 706 to rotate. The scraper 706 moves the wastewater between the two sets of scrapers 706, rotating the wastewater to drain pipe 4. The wastewater is then filtered through filter plate 707, and the filtered water is discharged through drain pipe 4. The scraper 706 rotates, carrying the sludge remaining after the water has been filtered out to the sludge discharge pipe 5. The sludge enters the extrusion cylinder 601 through the sludge discharge pipe 5, and this cycle continues. Then, the drive motor 603 is started, which drives the variable pitch spiral blade 604 to rotate. The variable pitch spiral blade 604 moves the sludge in the extrusion cylinder 601. As the pitch of the variable pitch spiral blade 604 gradually decreases, the sludge is gradually compressed, allowing the water in the wastewater to be discharged. After being filtered through the filter cylinder 602, the water is discharged from the outlet pipe 606, and the sludge moves with the variable pitch spiral blade 604 to the sludge discharge pipe 605 for discharge.

[0023] Through the above steps, the sludge enters the extrusion cylinder 601 through the sludge discharge pipe 5 and is circulated in this way. Then, the drive motor 603 is started, and the drive motor 603 drives the variable pitch spiral blade 604 to rotate. The variable pitch spiral blade 604 drives the sludge in the extrusion cylinder 601 to move. As the pitch of the variable pitch spiral blade 604 gradually decreases, the sludge is gradually compressed, and the water in the sewage is discharged. After being filtered by the filter cylinder 602, the water is discharged from the water outlet pipe 606, and the sludge moves with the variable pitch spiral blade 604 to the sludge outlet pipe 605 for discharge.

Claims

1. A sludge discharge device for sewage treatment, comprising a sedimentation tank (1); characterized in that: Also include extrusion cylinder (601) and mud discharge assembly; The lower end of the sediment tank (1) is provided with support frame (2), the upper end of the sediment tank (1) is provided with feed inlet (3), one side of the sediment tank (1) is provided with drain pipe (4) for sewage discharge, the lower end of the sediment tank (1) is provided with mud discharge pipe (5) for mud discharge, one side of the sediment tank (1) is provided with mud discharge assembly, one side of the mud discharge pipe (5) is provided with extrusion cylinder (601), the inside of the extrusion cylinder (601) is provided with filter cylinder (602) for filtering sewage, one side of the extrusion cylinder (601) is provided with driving motor (603), the output end of the driving motor (603) is provided with variable pitch helical blade (604) for extruding sludge, one side of the extrusion cylinder (601) is provided with mud outlet pipe (605), one side of the extrusion cylinder (601) is provided with water outlet pipe (606).

2. A sludge discharge device for sewage treatment according to claim 1, characterized in that: The extrusion cylinder (601) and the variable pitch helical blade (604) are provided with slots at the corresponding positions.

3. A sludge discharge device for sewage treatment according to claim 1, characterized in that: The pitch of the variable pitch helical blade (604) gradually decreases from the mud discharge pipe (5) to the mud outlet pipe (605), forming a gradual compression of the sludge.

4. The sludge discharge device for sewage treatment according to claim 1, characterized in that: The mud discharge assembly comprises a self-locking motor (701), one side of the sediment tank (1) is provided with a self-locking motor (701), the output end of the self-locking motor (701) is provided with a limit turntable (702), one side of the limit turntable (702) is provided with a push block (703), one side of the sediment tank (1) is provided with a Geneva disc (704), the inside of the Geneva disc (704) is provided with a rotating shaft (705), the outside of the rotating shaft (705) is provided with a scraper (706) for conveying sludge, one side of the sediment tank (1) is provided with a filter plate (707) for filtering sewage.

5. A sewage treatment sludge discharge device according to claim 4, characterised in that: The Geneva disc (704) and the push block (703) are provided with slots at the corresponding positions.

6. A sewage treatment sludge discharge device according to claim 4, characterised in that: The sediment tank (1) and the rotating shaft (705) are provided with slots at the corresponding positions.

7. A sewage treatment sludge discharge apparatus according to claim 4, wherein: The scraper (706) is provided with multiple groups, and the multiple groups of scrapers (706) are circumferentially arranged on the outside of the rotating shaft (705).

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