Sediment separator for sewage treatment

Abstract

The invention belongs to the technical field of sewage treatment, and discloses a sediment separator for sewage treatment, which comprises a mounting rack, a screening bin, a precipitation bin and a separation bin are sequentially arranged in the mounting rack from bottom to top, a dosing pipe is arranged at the center of the top of the separation bin in a penetrating manner, and a dosing port is formed in the top of the dosing pipe. A plurality of spiral branch pipes are uniformly arranged at the other end of the medicine adding pipe, a medicine outlet is formed in the outlet end of each spiral branch pipe, a second driving motor is installed on the surface of each spiral branch pipe, stirring blades are connected to the tail end of a transmission shaft at the driving end of each second driving motor, and a second discharging opening is formed in the bottom of the separation bin. One side of the top of the separation bin is further connected with a second water pump, and the other end of the second water pump is provided with a clear liquid outlet pipe. According to the device, through the movable screen, the movable screen can be conveniently replaced, and meanwhile, sewage sequentially passes through the screening bin, the precipitation bin and the separation bin to be treated step by step.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sediment separator for sewage treatment. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for drainage into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. Sewage generally contains a large amount of sediment and garbage. The first step in sewage treatment is to separate the sediment and garbage from the water. Sewage treatment equipment can effectively treat urban domestic sewage, industrial wastewater, etc., and prevent sewage and pollutants from directly flowing into the water. It is of great significance to improve the ecological environment, enhance the urban living environment, and promote economic development.

[0003] For example, the invention patent with publication number CN115501663A discloses a sand-water separation device for a sewage treatment plant, the separation device includes a main shell, a processing chamber is provided inside the main shell, two oblique mounting grooves are provided on one side of the main shell from top to bottom, and a coarse screen component and a fine screen component are respectively inserted into the two oblique mounting grooves. The invention uses two sand screening structures. When in use, the coarse screen component first screens out larger sand and gravel, and also regularly pushes out the sand and gravel in the coarse screen cavity through a push plate for cleaning. At the same time, the sand and gravel particles stuck in the screen slot are pushed out by conical nails. At the same time, the coarse screen component and the fine screen component of the invention are fixed by a fixing plate, and the coarse screen component and the fine screen component can be removed by removing the locking nut, which is convenient for maintaining the coarse screen component and the fine screen component, and the strip plate and the fine screen plate are fixed by a square frame, which is convenient for replacement. However, the existing sand-water separation devices are relatively complicated to replace the screening components during use, and are unable to separate the floating sludge, which easily leads to the floating sludge entering the subsequent biochemical system, thereby affecting the activated sludge biochemical effect of the biochemical pool. Summary of the invention

[0004] The object of the present invention is to provide a sediment separator for sewage treatment, so as to solve the problem that the existing sand-water separation devices mentioned in the above background technology are complicated to replace the screening components during use, and cannot separate the floating mud, which easily causes the floating mud to enter the subsequent biochemical system, thereby affecting the biochemical effect of the activated sludge in the biochemical pool.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sediment separator for sewage treatment comprises a mounting frame, wherein a screening bin, a sedimentation bin and a separation bin are sequentially arranged inside the mounting frame from bottom to top;

[0007] A spiral feeding mechanism is arranged inside the screening bin, and the other end of the spiral feeding mechanism is connected to the sedimentation bin through a feeding pipe. A screening mechanism is also arranged on the top of the screening bin, and a sewage inlet pipe is arranged on the top of the screening mechanism.

[0008] A liquid level sensor is provided inside the sedimentation bin, and the outside of the sedimentation bin is connected to the separation bin through a connecting pipe and a first water pump;

[0009] A dosing tube is arranged through the center of the top of the separation bin, a dosing port is arranged on the top of the dosing tube, a plurality of spiral branch tubes are evenly arranged on the other end of the dosing tube, a drug outlet is arranged at the outlet end of each of the spiral branch tubes, a second driving motor is respectively installed on the surface of each of the spiral branch tubes, a stirring blade is connected to the end of the transmission shaft of the driving end of the second driving motor, a second discharge port is arranged at the bottom of the separation bin, a second water pump is also connected to one side of the top of the separation bin, and a clear liquid outlet pipe is arranged at the other end of the second water pump.

[0010] Further preferably, the screening mechanism comprises a slide groove arranged on the top of the screening bin, two movable screens are symmetrically arranged inside the slide groove, moving wheels are symmetrically arranged on both sides of each movable screen, and a plurality of limit grooves are symmetrically arranged at the bottom of the slide groove.

[0011] Further preferably, the sewage inlet pipe is connected to the top of the screening bin through a support block, and the outlet of the sewage inlet pipe is located at the center of one of the movable screens.

[0012] Further preferably, the screening bin is in a conical structure as a whole, and a spiral feeding mechanism is connected to the side of the screening bin;

[0013] The spiral feeding mechanism includes a shell connected to the side of the screening bin, a transmission rod is arranged inside the shell, one end of the transmission rod passes through the shell and is connected to the first drive motor through the transmission mechanism, a feeding blade is also arranged on the outside of the transmission rod, and a feeding pipe is connected to the outside of the other end of the shell.

[0014] Further preferably, the transmission mechanism includes a driving shaft connected to the driving end of the first driving motor, a driving wheel is connected to the end of the driving shaft, a driven wheel is provided at one end of the transmission rod close to the first driving motor, and the driving wheel and the driven wheel are connected by a transmission belt.

[0015] Further preferably, the bottom of the sedimentation bin is also connected to a first discharge port, and the first discharge port is also provided with a solenoid valve.

[0016] Further preferably, adjacent second drive motors are connected via connecting rods, and the second drive motors and the connecting rods are connected end to end to form an equilateral triangle around the dosing tube.

[0017] Further preferably, a blower is connected to the outer side of the end of the dosing tube close to the dosing port, and an air guide plate is provided at the position where the dosing tube is connected to the blower.

[0018] Further preferably, the air guide plate is in an arc-shaped structure as a whole. The air guide plate with an arc-shaped structure can not only guide the air blown into the dosing tube by the blower, but also ensure that the medicine added through the dosing port will not be blown out.

[0019] Further preferably, a three-way valve is provided on the clear liquid outlet pipe, and one of the connection ports of the three-way valve is connected to the sewage inlet pipe through a water pipe, another connection port of the three-way valve is connected to the second water pump, and the last connection port of the three-way valve is connected to the clear liquid collection device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The device uses a movable active screen to replace the movable screen without stopping the machine. At the same time, the sewage passes through the screening bin, the sedimentation bin and the separation bin in sequence for screening, sedimentation and separation. After screening, the spiral feeding mechanism transports the sewage mixed with mud and sand to the sedimentation bin for sedimentation. After the sedimentation is completed, the supernatant mixed with fine impurities in the sedimentation bin is transported to the separation bin by the first water pump, and stirring blades in multiple directions are also arranged in the separation bin. Under the action of the second drive motor, in conjunction with the dosing pipe and the blower, further effective treatment of the sewage can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the stirring assembly and the dosing assembly inside the separation bin of the present invention;

[0024] Figure 3 It is a schematic diagram of the side structure of the screening mechanism of the present invention;

[0025] In the figure: 1. mounting frame; 11. sewage inlet pipe; 12. support block;

[0026] 2. Screening bin; 21. Screw feeding mechanism; 22. Transmission rod; 23. Feeding blade; 24. First driving motor; 25. Feeding pipe; 26. Screening mechanism; 261. Sliding slot; 262. Movable screen; 263. Moving wheel; 264. Limiting slot;

[0027] 3. Sedimentation bin; 31. Liquid level sensor; 32. First discharge port; 33. Connecting pipe; 34. First water pump;

[0028] 4. Separation bin; 41. Connecting rod; 42. Second driving motor; 43. Transmission shaft; 44. Stirring blade; 45. Drug outlet; 46. Dosing pipe; 461. Spiral branch pipe; 47. Air guide plate; 48. Dosing port; 49. Blower; 50. Second material outlet; 51. Second water pump. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 3 , the present invention provides a technical solution:

[0031] A sediment separator for sewage treatment comprises a mounting frame 1, wherein a screening chamber 2, a sedimentation chamber 3 and a separation chamber 4 are sequentially arranged inside the mounting frame 1 from bottom to top;

[0032] A spiral feeding mechanism 21 is provided inside the screening bin 2, and the other end of the spiral feeding mechanism 21 is connected to the sedimentation bin 3 through a feeding pipe 25. A screening mechanism 26 is also provided on the top of the screening bin 2, and a sewage inlet pipe 11 is provided on the top of the screening mechanism 26;

[0033] A liquid level sensor 31 is provided inside the sedimentation bin 3, and the outside of the sedimentation bin 3 is connected to the separation bin 4 through a connecting pipe 33 and a first water pump 34;

[0034] A dosing pipe 46 is provided through the center of the top of the separation bin 4, a dosing port 48 is provided on the top of the dosing pipe 46, a plurality of spiral branch pipes 461 are evenly provided at the other end of the dosing pipe 46, a drug outlet 45 is provided at the outlet end of each spiral branch pipe 461, a second drive motor 42 is installed on the surface of each spiral branch pipe 461, a stirring blade 44 is connected to the end of the transmission shaft 43 at the driving end of the second drive motor 42, a second discharge port 50 is provided at the bottom of the separation bin 4, a second water pump 51 is also connected to one side of the top of the separation bin 4, and a clear liquid outlet pipe is provided at the other end of the second water pump 51.

[0035] In the present invention, the screening mechanism 26 includes a chute 261 disposed at the top of the screening bin 2, two movable screens 262 are symmetrically disposed inside the chute 261, moving wheels 263 are symmetrically disposed on both sides of each movable screen 262, and a plurality of groups of limit grooves 264 are symmetrically disposed at the bottom of the chute 261. The sewage inlet pipe 11 is connected to the top of the screening bin 2 through the support block 12, and the outlet of the sewage inlet pipe 11 is located at the center of one of the movable screens 262.

[0036] In the present invention, the screening bin 2 is a cone-shaped structure as a whole, and a spiral feeding mechanism 21 is connected to the side of the screening bin 2;

[0037] The spiral feeding mechanism 21 includes a housing connected to the side of the screening bin 2, a transmission rod 22 is provided inside the housing, one end of the transmission rod 22 passes through the housing and is connected to the first drive motor 24 through the transmission mechanism, a feeding blade 23 is also provided on the outside of the transmission rod 22, and a feeding pipe 25 is connected to the outside of the other end of the housing. The transmission mechanism includes a driving shaft connected to the driving end of the first drive motor 24, a driving wheel is connected to the end of the driving shaft, and a driven wheel is provided at one end of the transmission rod 22 close to the first drive motor 24, and the driving wheel and the driven wheel are connected by a transmission belt.

[0038] In the present invention, the bottom of the sedimentation bin 3 is also connected to a first discharge port 32 , and the first discharge port 32 is also provided with a solenoid valve.

[0039] In the present invention, adjacent second drive motors 42 are connected via connecting rods 41 , and the second drive motors 42 and the connecting rods 41 are connected end to end to form an equilateral triangle around the dosing tube 46 .

[0040] In the present invention, a blower 49 is further connected to the outer side of the end of the dosing tube 46 near the dosing port 48, and an air guide plate 47 is further provided at the position where the dosing tube 46 and the blower 49 are connected to each other. The air guide plate 47 is an arc-shaped structure as a whole. The arc-shaped air guide plate 47 can not only guide the air blown into the dosing tube 46 by the blower 49, but also ensure that the medicine added through the dosing port 48 will not be blown out.

[0041] In the present invention, a three-way valve is provided on the clear liquid outlet pipe, and one of the connection ports of the three-way valve is connected to the sewage inlet pipe 11 through a water pipe. Another connection port of the three-way valve is connected to the second water pump 51, and the last connection port of the three-way valve is connected to the clear liquid collection device.

[0042] Embodiment 1: When in use, first connect the water inlet of the sewage inlet pipe 11 to the sewage pipe, and the sewage in the sewage pipe is discharged into the screening bin 2 through the sewage inlet pipe 11. When the sewage enters the screening bin 2, the large particles of impurities in the sewage are first filtered through the movable screen 262, and the sewage mixed with silt is transported to the sedimentation bin 3 through the spiral feeding mechanism 21. When feeding through the spiral feeding mechanism 21, the driving shaft at the driving end of the first driving motor 24 is matched with the driving wheel connected to its end. Under the drive of the transmission belt, the driving rod 22 is driven to rotate through the driven wheel, and then the feeding blade 23 on the outside of the driving rod 22 is driven to rotate, so as to lift the sewage mixed with silt in the conical screening bin 2, and cooperate with the feeding pipe 25 connected to the outside of the shell of the spiral feeding mechanism 21 to input the sewage into the sedimentation bin 3.

[0043] After the sewage mixed with silt enters the sedimentation bin 3, the liquid level inside the sedimentation bin 3 is monitored in real time by the liquid level sensor 31 inside the sedimentation bin 3. When the liquid level reaches the highest point and the bottom of the water outlet of the feeding pipe 25, the feeding work of the spiral feeding mechanism 21 is stopped, and the feeding is left to stand for at least 2 hours. Then, the first water pump 34 connected to the outside of the connecting pipe 33 is turned on to extract the precipitated sewage in the upper layer of the sedimentation bin 3 and transport it to the separation bin 4 under the action of the first water pump 34. The connecting pipes 33 at both ends of the first water pump 34 are provided with one-way valves to ensure that the sewage does not flow back. After the precipitated sewage in the upper layer of the sedimentation bin 3 is extracted, the silt in the precipitated sewage is discharged through the first discharge port 32 at the bottom of the sedimentation bin 3.

[0044] After the precipitated sewage enters the separation chamber 4, the medicine is added to the medicine adding pipe 46 through the medicine adding port 48 at the top of the medicine adding pipe 46, and the blower 49 is turned on. Under the action of the air guide plate 47 with an arc structure, the blower 49 can not only guide the air blown into the medicine adding pipe 46 by the blower 49, but also ensure that the medicine added through the medicine adding port 48 will not be blown out. The medicine is discharged into the separation chamber 4 through the medicine outlet 45 at the bottom of the multiple spiral branch pipes 461 at the bottom of the medicine adding pipe 46. At the same time, after the medicine is added, the blower 49 continues to work, which can not only prevent the sewage inside the separation chamber 4 from flowing back through the medicine adding pipe 46, but also perform aeration work inside the separation chamber 4. In addition, a plurality of spiral branches 461 are arranged at the bottom of the dosing pipe 46. Under the action of the spiral branch pipe 461, the sewage can be prevented from flowing back to a certain extent. At the same time, the second driving motor 42 on the surface of the spiral branch pipe 461 can drive the stirring blade 44 at the end of the transmission shaft 43 to fully mix the sewage and the medicine inside the separation chamber 4. After the sewage and the medicine are fully mixed and left to stand, the clear liquid in the upper layer inside the separation chamber 4 is output through the second water pump 51. A three-way valve is arranged on the clear liquid outlet pipe, and one of the connecting ports of the three-way valve is connected to the sewage inlet pipe 11 through a water pipe. Part of the clear liquid flows back to the first step for reuse. A one-way valve is also arranged between the water pipe and the sewage inlet pipe 11 to prevent the sewage in the sewage inlet pipe 11 from flowing into the treated clear liquid. Another interface of the three-way valve is connected to the second water pump 51, and the last interface of the three-way valve is connected to the clear liquid collection device. Part of the clear liquid can be collected uniformly and then processed or used for other purposes, such as flushing toilets, irrigation, etc. After the clear liquid in the upper layer of the separation bin 4 is extracted, the separated sediment is discharged through the second discharge port 50 at the bottom of the separation bin 4 .

[0045] Embodiment 2: Compared with Embodiment 1, the difference between this embodiment and Embodiment 1 is that when the movable screen 262 in the screening mechanism 26 at the top of the screening bin 2 needs to be replaced, there is no need to stop other steps. Figure 3As shown, push the movable screen 262 on the right side to the left side, the movable screen 262 on the right side will hold up the movable screen 262 on the left side, and push the movable screen 262 on the left side away from the original position, and the movable screen 262 on the right side replaces the original movable screen 262 on the left side to perform screening work, and the moving wheels 263 on both sides of the movable screen 262 will cooperate with the limiting grooves 264 to perform limiting work. Ensure that the movable screen 262 can be moved to a fixed position after moving. After the staff cleans the pushed-out movable screen 262, install it at the position where the original movable screen 262 on the right side is located. When cleaning and replacement are required, repeat the above steps.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sediment separator for sewage treatment, comprising a mounting frame (1), characterized in that: The interior of the mounting frame (1) is provided with a screening bin (2), a sedimentation bin (3) and a separation bin (4) in sequence from bottom to top; A spiral feeding mechanism (21) is provided inside the screening bin (2), the other end of the spiral feeding mechanism (21) is connected to the sedimentation bin (3) via a feeding pipe (25), a screening mechanism (26) is also provided on the top of the screening bin (2), and a sewage inlet pipe (11) is provided on the top of the screening mechanism (26); A liquid level sensor (31) is provided inside the sedimentation bin (3), and the outside of the sedimentation bin (3) is connected to the separation bin (4) through a connecting pipe (33) in cooperation with a first water pump (34); A dosing pipe (46) is provided through the center of the top of the separation bin (4), a dosing port (48) is provided at the top of the dosing pipe (46), a plurality of spiral branch pipes (461) are evenly provided at the other end of the dosing pipe (46), a drug outlet (45) is provided at the outlet end of each spiral branch pipe (461), a second drive motor (42) is respectively installed on the surface of each spiral branch pipe (461), a stirring blade (44) is connected to the end of the transmission shaft (43) at the drive end of the second drive motor (42), a second discharge port (50) is provided at the bottom of the separation bin (4), a second water pump (51) is also connected to one side of the top of the separation bin (4), and a clear liquid outlet pipe is provided at the other end of the second water pump (51).

2. A sediment separator for sewage treatment according to claim 1, characterized in that: The screening mechanism (26) comprises a slide groove (261) arranged at the top of the screening bin (2), two movable screens (262) are symmetrically arranged inside the slide groove (261), moving wheels (263) are symmetrically arranged on both sides of each movable screen (262), and a plurality of groups of limit grooves (264) are symmetrically arranged at the bottom of the slide groove (261).

3. A sediment separator for sewage treatment according to claim 2, characterized in that: The sewage inlet pipe (11) is connected to the top of the screening bin (2) via a support block (12), and the outlet of the sewage inlet pipe (11) is located at the center of one of the movable screens (262).

4. The sediment separator for sewage treatment according to claim 1, characterized in that: The screening bin (2) is of a conical structure as a whole, and a spiral feeding mechanism (21) is connected to the side of the screening bin (2); The spiral feeding mechanism (21) comprises a shell connected to the side of the screening bin (2), a transmission rod (22) is arranged inside the shell, one end of the transmission rod (22) passes through the shell and is connected to a first drive motor (24) through a transmission mechanism, a feeding blade (23) is also arranged on the outside of the transmission rod (22), and a feeding pipe (25) is connected to the outside of the other end of the shell.

5. A sediment separator for sewage treatment according to claim 4, characterized in that: The transmission mechanism comprises a driving shaft connected to the driving end of a first driving motor (24), the end of the driving shaft is connected to a driving wheel, and a driven wheel is arranged at one end of the transmission rod (22) close to the first driving motor (24), and the driving wheel and the driven wheel are connected via a transmission belt.

6. The sediment separator for sewage treatment according to claim 1, characterized in that: The bottom of the sedimentation bin (3) is also connected to a first discharge port (32), and the first discharge port (32) is also provided with a solenoid valve.

7. The sediment separator for sewage treatment according to claim 1, characterized in that: Adjacent second drive motors (42) are connected via connecting rods (41), and the second drive motors (42) and the connecting rods (41) are connected end to end to form an equilateral triangle around the dosing tube (46).

8. The sediment separator for sewage treatment according to claim 1, characterized in that: The outer side of the end of the dosing pipe (46) close to the dosing port (48) is also connected to a blower (49), and an air guide plate (47) is also provided at a position where the dosing pipe (46) and the blower (49) are connected to each other.

9. A sediment separator for sewage treatment according to claim 8, characterized in that: The wind guide plate (47) is an overall arc-shaped structure.

10. The sediment separator for sewage treatment according to claim 1, characterized in that: The clear liquid outlet pipe is provided with a three-way valve, and one of the connection ports of the three-way valve is connected to the sewage inlet pipe (11) through a water pipe.

Images