A sewage adsorption and precipitation device

Abstract

The present invention discloses a sewage adsorption and sedimentation device, belonging to the technical field of sewage purification, which includes a frame and a sedimentation tank fixedly connected to the frame; a water inlet is provided on the side wall of the sedimentation tank, and a sludge discharge port is provided at the bottom of the sedimentation tank; a sludge reduction housing is fixedly connected to the inner side wall of the sedimentation tank. A buffer chamber communicating with the water inlet and a water outlet chamber communicating with the buffer chamber are provided in the sludge reduction housing. A sludge falling plate is rotatably connected to the bottom of the buffer chamber, and a sludge guiding plate for discharging the sludge on the sludge falling plate is fixedly connected to the bottom of the sludge reduction housing; a rotating shaft is rotatably connected to the side wall of the sedimentation tank, and a first intermittent gear is fixedly connected to one end of the rotating shaft extending out of the sedimentation tank. A first gear capable of meshing with the first intermittent gear is arranged above the first intermittent gear, and one end of the sludge falling plate is fixedly connected to the first gear. When the sludge falling plate rotates, it can block the communication between the buffer chamber and the water outlet chamber. The present invention has the effect of improving the sedimentation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage purification, and particularly relates to a sewage adsorption and precipitation device. Background Art

[0002] Slaughter and meat processing wastewater is the sewage generated during the slaughter or meat processing process, mainly containing blood stains, grease, minced meat, livestock hair, undigested food, feces and urine, etc. It has the characteristics of large water volume, uneven drainage, high concentration, many impurities and suspended solids, and good biodegradability. These substances will precipitate to the bottom of the sewage during the sewage treatment process, forming sludge or silt. According to the characteristics and treatment requirements of sewage treatment, the sewage treatment process generally adopts physical and chemical and biochemical treatment processes. Through appropriate treatment methods, such as sedimentation tanks or sedimentation basins, the solid particles in the sewage can be precipitated and separated, thereby purifying the water quality and reducing environmental pollution.

[0003] As Figure 1 shown, the sewage enters the box from the inflow end, then flows through multiple small compartments for sedimentation, and finally part of the sewage enters the secondary sedimentation tank, and part of the sewage flows back to the first compartment. After the sewage enters the secondary sedimentation tank and undergoes sedimentation, the sludge precipitates at the bottom of the secondary sedimentation tank, and the obtained clean water is discharged from the device. The sludge discharge port at the bottom of the secondary sedimentation tank is provided with two branches. One branch discharges sludge out of the system for sludge recycling, and the other branch is a sludge return pipeline, which enters the first compartment through a sludge return pump.

[0004] In view of the above related technologies, after the sewage enters the secondary sedimentation tank, the sludge in the sewage will disturb the liquid in the secondary sedimentation tank, resulting in the flow of the precipitated and about-to-precipitate sludge in the secondary sedimentation tank, affecting the sedimentation efficiency. Summary of the Invention

[0005] In view of this, the present invention provides a sewage adsorption and precipitation device, aiming to solve the problem that the sludge in the sewage disturbs the water flow and affects sedimentation.

[0006] To solve the above technical problems, the present invention provides a sewage adsorption and sedimentation device, including a frame and a sedimentation tank fixedly connected to the frame; an inlet is provided on the side wall of the sedimentation tank, and a sludge discharge port is provided at the bottom of the sedimentation tank. The device further includes: a sludge reduction housing fixedly connected to the inner side wall of the sedimentation tank, a buffer chamber communicating with the inlet is provided in the sludge reduction housing, and an outlet chamber communicating with the buffer chamber is provided. A sludge dropping plate is rotatably connected to the bottom of the buffer chamber, and a sludge guiding plate for discharging the sludge on the sludge dropping plate is fixedly connected to the bottom of the sludge reduction housing; a rotating shaft is rotatably connected to the side wall of the sedimentation tank, and a first intermittent gear is fixedly connected to one end of the rotating shaft extending out of the sedimentation tank. A first gear capable of meshing with the first intermittent gear is provided above the first intermittent gear, and one end of the sludge dropping plate is fixedly connected to the first gear. When the sludge dropping plate rotates, it can block the communication between the buffer chamber and the outlet chamber.

[0007] By adopting the above technical solution, after the sewage enters the sedimentation tank, it first enters the sludge reduction housing, and then the sewage flows into the sedimentation tank through the buffer chamber and the outlet chamber. Part of the sludge falls onto the sludge dropping plate for sedimentation, and part of the sludge falls into the sedimentation tank from the outlet chamber for sedimentation, thereby reducing the amount of sludge falling into the sedimentation tank, which is beneficial to reducing the disturbance of the sludge to the water flow and improving the sedimentation efficiency. When the first intermittent gear rotates, it can drive the first gear to rotate. When the first gear rotates, it can drive the sludge dropping plate to rotate, so that the sludge on the sludge dropping plate falls onto the sludge guiding plate and is discharged from the sedimentation tank. At the same time, the rotation of the sludge dropping plate can block the communication between the buffer chamber and the outlet chamber, thereby reducing the probability of the sludge on the sludge dropping plate entering the outlet chamber and being beneficial to improving the sedimentation efficiency of the sludge.

[0008] Optionally, a processing mechanism for sedimenting the sludge dropped by the sludge dropping plate is provided in the sludge reduction housing.

[0009] By adopting the above technical solution, the setting of the processing mechanism can process and recycle the sludge dropped by the sludge dropping plate, which is convenient for the recycling and sedimentation of the sludge.

[0010] Optionally, the processing mechanism includes a rotating cylinder fixedly connected to the rotating shaft. A processing groove is provided on the rotating cylinder, and a filter screen is fixedly connected to the inner side wall of the processing groove. A processing pipe fixedly connected to the side wall of the sedimentation tank is provided in the rotating cylinder. When the rotating cylinder rotates, the processing groove can communicate with the processing pipe. An air outlet chamber and a water absorption chamber are provided in the processing pipe. A sludge outlet is provided on one side of the sludge reduction housing close to the sludge guiding plate, and the air outlet chamber is arranged close to the sludge outlet.

[0011] By adopting the above technical solution, the sludge falls into the processing tank after dropping from the mud dropping plate. The rotation of the rotating cylinder connects the processing tank with the water suction cavity of the treatment pipe, and then the water in the sludge on the filter screen is sucked through the water suction cavity to facilitate the treatment of the sludge. As the rotating cylinder rotates, the air outlet cavity of the treatment pipe is connected to the processing tank, and then the sludge on the filter screen is blown out and falls onto the mud guiding plate, which is beneficial to improving the sedimentation effect of the sludge.

[0012] Optionally, a screw blade is arranged above the filter screen. One side of the screw blade is fixedly connected with a second gear. The outer part of the rotating shaft is sleeved with a second intermittent gear fixedly connected with the side wall of the sedimentation tank. An intermittent rack fixedly connected with the sedimentation tank is arranged outside the second gear, and the teeth of the intermittent rack are arranged close to the mud outlet. When the rotating cylinder drives the second gear to rotate, the second gear first meshes with the second intermittent gear and then meshes with the intermittent rack.

[0013] By adopting the above technical solution, as the rotating cylinder rotates, when the second gear meshes with the second intermittent gear, the second gear drives the screw blade to rotate. The rotation of the screw blade can extrude the sludge, reduce the probability of sludge accumulation and adhesion, and at the same time is beneficial to improving the dehydration effect of the sludge. Then the second gear meshes with the intermittent rack to make the screw blade rotate, thereby dispersing the sludge and reducing the probability of blockage of the filter screen.

[0014] Optionally, a suction device is connected to one end of the treatment pipe close to the first intermittent gear, and a blowing device is connected to the other end of the treatment pipe far from the first intermittent gear.

[0015] By adopting the above technical solution, a suction device and a blowing device are respectively arranged on both sides of the treatment pipe, which is beneficial to saving space, reasonable distribution and beautiful appearance.

[0016] Optionally, a plurality of processing tanks are provided.

[0017] By adopting the above technical solution, the arrangement of a plurality of processing tanks can disperse the sludge falling into the processing tanks, which is beneficial to the treatment of the sludge.

[0018] Optionally, a sludge discharge valve is fixedly installed at the mud discharge port.

[0019] By adopting the above technical solution, the setting of the sludge discharge valve facilitates the discharge of the sludge sediment and is easy to operate.

[0020] Optionally, a rotating source is fixedly installed on the side wall of the sedimentation tank. The driving shaft of the rotating source is fixedly connected with a first belt pulley. A first belt is sleeved on the first belt pulley, and the other side of the first belt is sleeved with a second belt pulley fixedly connected with the rotating shaft.

[0021] By adopting the above technical solution, the belt drive has the advantages of stable transmission, high transmission efficiency, flexible transmission layout, vibration absorption and buffering, convenient maintenance, and low transmission cost.

[0022] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0023] 1. After the sewage enters the sedimentation tank, it first enters the sludge reduction shell, and then the sewage flows into the sedimentation tank through the buffer chamber and the water outlet chamber. Part of the sludge falls onto the sludge falling plate for sedimentation, and part of the sludge falls into the sedimentation tank from the water outlet chamber for sedimentation. Thus, the amount of sludge falling into the sedimentation tank can be reduced, which is beneficial to reducing the disturbance of the sludge to the water flow and improving the sedimentation efficiency. When the first intermittent gear rotates, it can drive the first gear to rotate, and when the first gear rotates, it can drive the sludge falling plate to rotate, so that the sludge on the sludge falling plate falls onto the sludge guiding plate and is discharged from the sedimentation tank. At the same time, the rotation of the sludge falling plate can block the connection between the buffer chamber and the water outlet chamber, thereby reducing the probability of the sludge on the sludge falling plate entering the water outlet chamber and being beneficial to improving the sedimentation efficiency of the sludge;

[0024] 2. After the sludge falls from the sludge falling plate, it falls into the processing tank. The rotation of the rotating cylinder connects the processing tank with the water absorption chamber of the treatment pipe, and then the water in the sludge on the filter screen is sucked through the water absorption chamber, which is convenient for the treatment of the sludge. As the rotating cylinder rotates, the air outlet chamber of the treatment pipe is connected with the processing tank, and then the sludge on the filter screen is blown out and falls onto the sludge guiding plate, which is beneficial to improving the sedimentation effect of the sludge;

[0025] 3. When the second gear meshes with the second intermittent gear, the second gear drives the auger blade to rotate. The rotation of the auger blade can squeeze the sludge, which is beneficial to improving the dehydration effect of the sludge while reducing the probability of sludge caking. Then the second gear meshes with the intermittent rack to make the auger blade rotate, thereby dispersing the sludge and reducing the probability of clogging of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the prior art;

[0027] Figure 2 is a schematic structural diagram of an embodiment of the present invention;

[0028] Figure 3 is a cross-sectional view of an embodiment of the present invention;

[0029] Figure 4 is a schematic structural diagram of the sludge falling plate of an embodiment of the present invention;

[0030] Figure 5 is a schematic structural diagram of the processing tank and the second gear of an embodiment of the present invention;

[0031] Figure 6Cross-sectional view of the rotating cylinder according to an embodiment of the present invention;

[0032] Figure 7 Schematic structural diagram of the rotating source and the second pulley according to an embodiment of the present invention.

[0033] Explanation of reference numerals: 1, frame; 11, sedimentation tank; 12, water inlet; 13, sludge discharge port; 2, sludge reduction housing; 21, buffer chamber; 22, water outlet chamber; 23, sludge falling plate; 24, sludge guiding plate; 25, rotating shaft; 26, first intermittent gear; 27, first gear; 3, processing mechanism; 31, rotating cylinder; 32, processing groove; 33, filter screen; 34, treatment pipe; 35, air outlet chamber; 36, water absorption chamber; 37, sludge outlet; 4, auger blade; 41, second gear; 42, second intermittent gear; 43, intermittent rack; 5, sludge discharge valve; 6, rotating source; 61, first pulley; 62, first belt; 63, second pulley. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely below in conjunction with the Figures 2 - 7 of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0035] Referring to Figure 2 , Figure 3 and Figure 4 , a sewage adsorption and sedimentation device includes a frame 1 erected on a horizontal plane. A sedimentation tank 11 is fixedly connected to the frame 1. Three water inlets 12 for sewage to enter are opened on the side wall of the sedimentation tank 11. A sludge discharge port 13 is opened at the bottom of the sedimentation tank 11, and a sludge discharge valve 5 is fixedly installed at the sludge discharge port 13. A sludge reduction housing 2 is fixedly connected to the inner side wall of the sedimentation tank 11 near the water inlet 12. A buffer chamber 21 communicating with the water inlet 12 and a water outlet chamber 22 communicating with the buffer chamber 21 are opened inside the sludge reduction housing 2. The buffer chamber 21 and the water outlet chamber 22 are separated by a partition. An arc-shaped sludge falling plate 23 is rotatably connected to the bottom of the buffer chamber 21. An inclined sludge guiding plate 24 is fixedly connected to the bottom of the sludge reduction housing 2. Rotating shafts 25 are rotatably connected to both sides of the sedimentation tank 11. A first intermittent gear 26 is fixedly connected to the rotating shafts 25. A first gear 27 capable of meshing with the first intermittent gear 26 is arranged above the first intermittent gear 26. The sludge falling plate 23 is fixedly connected to a rotating shaft through a connecting rod. A return torsion spring for driving the sludge falling plate 23 back to the initial position is arranged on the rotating shaft. The rotating shaft extends out of the side wall of the sedimentation tank 11 and is fixedly connected to the first gear 27. The rotation of the sludge falling plate 23 can block the communication between the buffer chamber 21 and the water outlet chamber 22.

[0036] When it is necessary to improve the sedimentation efficiency, first, sewage enters the buffer chamber 21 in the sludge reduction housing 2 from the water inlet 12. Part of the sludge in the sewage precipitates onto the sludge dropping plate 23, and the other part of the sludge enters the sedimentation tank 11 through the water outlet chamber 22 along with the sewage for secondary sedimentation. The rotating shaft 25 rotates to drive the first intermittent gear 26 to rotate. When the first intermittent gear 26 meshes with the first gear 27, the first gear 27 starts to rotate and drives the sludge dropping plate 23 to rotate. The sludge dropping plate 23 rotates to dump the sludge on the sludge dropping plate 23 and make it fall onto the sludge guiding plate 24 and be discharged. Thereby, the amount of sludge falling into the sedimentation tank 11 can be reduced, which is beneficial to reducing the disturbance of the sludge to the water flow and improving the sedimentation efficiency. At the same time, the rotation of the sludge dropping plate 23 can block the connection between the buffer chamber 21 and the water outlet chamber 22, and can reduce the probability of the sludge on the sludge dropping plate 23 entering the water outlet chamber 22, which is beneficial to improving the sedimentation efficiency of the sludge.

[0037] Refer to Figure 4 , a processing mechanism 3 for sedimenting the sludge dropped by the sludge dropping plate 23 is provided in the sludge reduction housing 2. The setting of the processing mechanism 3 can process and recycle the sludge dropped by the sludge dropping plate 23, so as to facilitate the recycling of the sludge and the sedimentation of the sludge.

[0038] Refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , the processing mechanism 3 includes a rotating cylinder 31, two processing grooves 32, a filter screen 33, a processing pipe 34, an air outlet chamber 35, a water absorption chamber 36, and a mud outlet 37. The rotating cylinder 31 is fixedly connected to the rotating shaft 25 and the rotating cylinder 31 is horizontally arranged. The processing grooves 32 are opened on the circumferential side wall of the rotating cylinder 31. The filter screen 33 is fixedly connected to the side wall of the processing groove 32. The processing pipe 34 is fixedly connected to the side wall of the sedimentation tank 11 and the processing pipe 34 is arranged at the center of the rotating cylinder 31. One end of the processing pipe 34 close to the first intermittent gear 26 is connected with a suction device, and the other end of the processing pipe 34 far from the first intermittent gear 26 is connected with a blowing device. The air outlet chamber 35 and the water absorption chamber 36 are arranged inside the processing pipe 34 and respectively occupy half of the space of the processing pipe 34. The mud outlet 37 is opened on one side of the sludge reduction housing 2 close to the sludge guiding plate 24, and the air outlet chamber 35 is arranged close to the mud outlet 37.

[0039] When it is necessary to treat the sludge falling from the mud guard 23, the sludge falls into the processing tank 32 after falling from the mud guard 23. The rotation of the rotating cylinder 31 can connect the processing tank 32 with the water suction cavity 36 of the treatment pipe 34. Then, the moisture of the sludge is extracted by a suction device. By extracting the moisture in the sludge, the sludge can become drier and more concentrated, which is beneficial to the subsequent treatment and precipitation processes. As the rotating cylinder 31 continues to rotate, the air outlet cavity 35 is connected to the processing tank 32, and then the sludge on the filter screen 33 is blown onto the mud guide plate 24, reducing the probability of blockage of the filter screen 33 and facilitating the discharge of the sludge.

[0040] Refer to Figure 4 、 Figure 5 and Figure 6 , a screw blade 4 is rotatably connected in each processing tank 32, and the screw blade 4 is located above the filter screen 33. One end of the central axis of the screw blade 4 extending out of the rotating cylinder 31 is fixedly connected with a second gear 41. A second intermittent gear 42 fixedly connected to the outer side wall of the sedimentation tank 11 is sleeved outside the rotating shaft 25. An intermittent rack 43 fixedly connected to the side wall of the sedimentation tank 11 is arranged outside the second gear 41, and the teeth of the intermittent rack 43 are arranged close to the mud outlet 37. When the rotating cylinder 31 drives the second gear 41 to rotate, the second gear 41 first meshes with the second intermittent gear 42 and then meshes with the intermittent rack 43.

[0041] The second gear 41 rotates together with the rotating cylinder 31. When the second gear 41 meshes with the second intermittent gear 42, the second gear 41 drives the screw blade 4 to rotate. The rotation of the screw blade 4 can extrude the sludge, reducing the probability of sludge caking and facilitating the dehydration effect of the sludge. Then, the second gear 41 meshes with the intermittent rack 43 to make the screw blade 4 rotate, thereby dispersing the sludge and facilitating the dehydration of the sludge, enhancing the precipitation effect, and cooperating with the air outlet cavity 35 to reduce the probability of blockage of the filter screen 33.

[0042] Refer to Figure 7 , a rotating source 6 is fixedly installed on the side wall of the sedimentation tank 11. The driving shaft of the rotating source 6 is fixedly connected with a first pulley 61. A first belt 62 is sleeved on the first pulley 61. The other side of the first belt 62 is sleeved with a second pulley 63 fixedly connected to the rotating shaft 25. Starting the rotating source 6 drives the first pulley 61 to rotate. The first pulley 61 drives the second pulley 63 to rotate through the first belt 62. The rotation of the second pulley 63 drives the rotating shaft 25 to rotate. Belt transmission has the advantages of stable transmission, high transmission efficiency, flexible transmission layout, vibration absorption and buffering, convenient maintenance, and low transmission cost.

[0043] The implementation principle of a sewage adsorption and sedimentation device according to an embodiment of the present invention is as follows: First, sewage enters the buffer chamber 21 in the sludge reduction housing 2 from the water inlet 12. Part of the sludge in the sewage precipitates onto the sludge dropping plate 23, and the other part of the sludge enters the sedimentation tank 11 through the water outlet chamber 22 along with the sewage for secondary sedimentation. The rotating shaft 25 rotates to drive the first intermittent gear 26 to rotate. When the first intermittent gear 26 meshes with the first gear 27, the first gear 27 starts to rotate and drives the sludge dropping plate 23 to rotate. The sludge dropping plate 23 rotates to dump the sludge on the sludge dropping plate 23 and make the sludge fall into the processing tank 32.

[0044] As the rotating cylinder 31 rotates, when the second gear 41 meshes with the second intermittent gear 42, the second gear 41 drives the auger blade 4 to rotate. At the same time, the extraction chamber is communicated with the processing tank 32 to extract the moisture of the sludge. Then, when the second gear 41 meshes with the intermittent rack 43, the auger blade 4 rotates. At the same time, the air outlet chamber 35 is communicated with the processing tank 32 and blows air to make the sludge fall onto the mud guiding plate 24 and be discharged for sedimentation.

[0045] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] The above is the preferred implementation manner of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A sewage adsorption sedimentation device, comprising a frame and a sedimentation tank fixedly connected to the frame; a water inlet is provided on the side wall of the sedimentation tank, and a mud discharge port is provided at the bottom of the sedimentation tank, characterized in that: Also includes: A mud reduction shell is fixedly connected to the inner wall of the sedimentation tank, a buffer chamber connected to the water inlet and a water outlet chamber connected to the buffer chamber are provided in the mud reduction shell, an arc-shaped mud drop plate is rotatably connected to the bottom of the buffer chamber, and the mud on the mud drop plate can be dumped when the mud drop plate rotates, and a mud guide plate for discharging the mud on the mud drop plate is fixedly connected to the bottom of the mud reduction shell; A rotating shaft is rotatably connected to the side wall of the sedimentation tank, one end of the rotating shaft extending out of the sedimentation tank is fixedly connected to a first intermittent gear, a first gear capable of meshing with the first intermittent gear is arranged above the first intermittent gear, and one end of a mud falling plate is fixedly connected to the first gear, and the mud falling plate can block the communication between the buffer chamber and the water outlet chamber when rotating; The mud reduction shell is provided with a processing mechanism for processing and recovering the mud dropped from the mud drop plate; The processing mechanism comprises a rotating cylinder fixedly connected to the rotating shaft, a processing groove is provided on the rotating cylinder, a filter screen is fixedly connected to the inner side wall of the processing groove, a processing pipe fixedly connected to the side wall of the sedimentation tank is arranged in the rotating cylinder, the processing groove can be communicated with the processing pipe when the rotating cylinder rotates, an air outlet cavity and a water absorption cavity are arranged in the processing pipe, a mud outlet is provided on one side of the mud reduction shell close to the mud guide plate, and the air outlet cavity is arranged close to the mud outlet; An auger blade is rotatably arranged above the filter screen, a second gear is fixedly connected to one side of the auger blade, a second intermittent gear fixedly connected to the side wall of the sedimentation tank is sleeved on the outer side of the rotating shaft, an intermittent rack fixedly connected to the sedimentation tank is arranged on the outer side of the second gear, and the teeth of the intermittent rack are arranged close to the mud outlet, when the rotating cylinder rotates with the second gear, the second gear first meshes with the second intermittent gear and then meshes with the intermittent rack; when the second gear meshes with the second intermittent gear, the second gear drives the auger blade to rotate, and the rotation of the auger blade can squeeze the sludge, reduce the probability of sludge agglomeration, and is beneficial to improve the dehydration effect of the sludge, and then the second gear meshes with the intermittent rack to rotate the auger blade, thereby dispersing the sludge; One end of the processing tube close to the first intermittent gear is connected to a suction device, and one end of the processing tube away from the first intermittent gear is connected to a blowing device.

2. A sewage adsorption and sedimentation device according to claim 1, characterized in that: The processing grooves are arranged in plurality.

3. A sewage adsorption and sedimentation device according to claim 1, characterized in that: The mud discharge port is fixedly provided with a mud discharge valve.

4. The sewage adsorption and sedimentation device according to claim 1, characterized in that: A rotating source is fixedly installed on the side wall of the sedimentation tank, and a driving shaft of the rotating source is fixedly connected to a first pulley, a first belt is sleeved on the first pulley, and a second pulley fixedly connected to the rotating shaft is sleeved on the other side of the first belt.

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