A rural domestic sewage pretreatment equipment

Abstract

This invention relates to the field of water treatment technology, and more particularly to a pretreatment device for rural domestic sewage. The technical solution includes: a squeezing device inside a filter barrel, forming a dewatering filtration chamber between the filter barrel and the squeezing device, and a sewage chamber between the filter barrel and the shell. A discharge device fixed to the shell is located at the top of the dewatering filtration chamber. This invention can dewater and dry the residue in the sewage, allowing the residue to be recycled after discharge, thus protecting the environment and increasing economic value. Furthermore, the discharged sewage can absorb oil stains, preventing pollution and damage to the environment.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a pretreatment device for rural domestic sewage. Background Technology

[0002] With the improvement of living standards in rural areas, the amount of domestic sewage discharged has gradually increased, putting pressure on the environment. Rural domestic sewage is often of fewer types, generally including kitchen wastewater and washing wastewater, and the amount of domestic sewage discharged by individual households is even smaller. Therefore, it is necessary to focus attention on sewage generated by rural collective activities.

[0003] In rural areas, mobile kitchens are often used to prepare food for celebratory events. These mobile kitchens often generate a lot of wastewater due to the large volume of food they prepare. This wastewater contains food scraps and grease. Because rural areas lack dedicated sewage pipes and treatment facilities, most of this wastewater is discharged directly into rivers or open fields, which pollutes the waterways and damages the ecosystem of the fields. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a pretreatment device for rural domestic sewage.

[0005] The technical solution of the present invention: a rural domestic sewage pretreatment equipment, including a shell, a rotatable filter barrel is provided inside the shell, a squeezing device is provided inside the filter barrel, a dewatering filter chamber is formed between the filter barrel and the squeezing device, a sewage chamber is formed between the filter barrel and the shell, and a discharge device fixed on the shell is provided on the top of the dewatering filter chamber.

[0006] The extrusion device includes a cylinder fixed to the housing, and a column located inside the cylinder. The cylinder is provided with a plurality of movable push columns, and the column is fixed with a plurality of push columns that cooperate with the push columns. The bottom of the housing is equipped with a power device for driving the filter barrel and the column to rotate.

[0007] The discharge device includes an inflation mechanism and a suction mechanism. The inflation mechanism includes an electric inflation box fixed outside the housing and several exhaust pipes installed on the column that can communicate with the dewatering and filtering chamber. The air outlet of the electric inflation box is connected to the exhaust pipes. The suction mechanism includes a suction fan fixed outside the housing and a plowing rod located at the top of the dewatering and filtering chamber. The plowing rod is fixed below the suction pipe. A heating pipe is fixed and connected between the suction pipe and the air inlet of the suction fan.

[0008] Preferably, the power unit includes a motor fixed outside the housing, and a mounting base fixed to the bottom of the filter barrel. The mounting base is fixedly mounted with a mounting bracket, which is fixedly mounted on the output shaft of the motor. The bottom of the filter barrel has a bottom hole, and a circular seat is fixedly mounted on the bottom of the barrel. The circular seat has a circular stabilizing groove, and the bottom of the filter barrel is rotatably mounted in the circular stabilizing groove.

[0009] Preferably, a gear reducer is fixedly installed at the bottom of the circular seat, the gear reducer is connected to the end of the motor output shaft via a coupling, a base is installed at the bottom of the column, and the power shaft of the gear reducer is fixedly connected to the base.

[0010] Preferably, the surface of the cylinder is provided with a plurality of slots, the pushed column is located in the slots, and a rubber belt is fixedly installed between the pushed column and the slots.

[0011] Preferably, the cylinder further includes a circular frame with an air supply groove and a plurality of exhaust holes on the surface of the air supply groove. The inflation mechanism further includes a through hole in the column. The pushing column includes an exhaust box, which is connected to the through hole. A plurality of exhaust pipes are fixed and connected to the periphery of the exhaust box. The exhaust box is slidably installed in the air supply groove.

[0012] Preferably, an installation sleeve is fixedly installed inside the top of the through hole, and a connecting pipe is rotatably connected to the installation sleeve. The air outlet of the electric air box is fixed and connected to the air supply pipe. The air supply pipe and the connecting pipe are fixed and connected. A door is provided at the exhaust hole, and a torsion spring is provided between the door and the air supply channel wall.

[0013] Preferably, the suction pipe extends through the top of the housing, the suction pipe is fixed and connected to the suction head, the plowing rod is fixed inside the suction head, the heating pipe is equipped with an electric heating pipe, and the suction fan is equipped with a discharge port.

[0014] Preferably, the shell has drain outlets on both sides, the sewage chamber is connected to the drain outlets, a sewage hopper is fixedly installed on the top of the shell, the sewage hopper is fixed and connected to a sewage pipe whose end is located in the dewatering filter chamber, the shell has two symmetrically arranged stabilizing plates, the filter barrel is located between the two stabilizing plates, the bottom of the shell has a ramp surrounding the filter barrel, a treatment box is fixed outside the shell, the treatment box is connected to the drain outlet, a suction plate is inserted inside the treatment box, and the treatment box includes a drain pipe.

[0015] Compared with existing technologies, the beneficial effects of the present invention are as follows: The present invention can discharge sewage by setting up a filter barrel and a squeezing device, and can dehydrate the residue in the sewage. The dehydrated residue can be discharged through a discharge device, and the discharge can dry the residue, which makes the residue recyclable after discharge. This protects the environment and increases economic value. The discharged sewage can absorb oil stains, so that the sewage will not cause pollution or damage to the environment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the material suction mechanism of the present invention;

[0019] Figure 4 This is a schematic diagram of the extrusion device of the present invention;

[0020] Figure 5 This is a schematic diagram of the inflation mechanism of the present invention;

[0021] Figure 6 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 7 for Figure 6 A magnified structural diagram of point A in the middle.

[0023] Reference numerals: 1. Shell; 2. Filter barrel; 3. Cylinder; 4. Column; 5. Power unit; 6. Aeration mechanism; 7. Suction mechanism; 8. Sewage hopper; 9. Sewage pipe;

[0024] 10. Wastewater chamber; 11. Drain outlet; 12. Slope; 13. Treatment tank; 14. Drain pipe;

[0025] 15. Suction plate; 31. Groove; 32. Push column; 33. Rubber belt; 34. Circular frame;

[0026] 35. Air supply trough; 41. Push column; 42. Base; 51. Motor; 52. Mounting seat; 53. Mounting bracket; 54. Gear reducer; 55. Circular seat; 56. Circular stabilizing groove; 57. Bottom hole; 61. Exhaust box; 62. Through hole; 63. Exhaust pipe; 64. Exhaust hole; 65. Electric air filling box; 66. Mounting sleeve; 67. Connecting pipe; 68. Air supply pipe; 71. Fan; 72. Plowing rod; 73. Suction head; 74. Suction pipe; 75. Heating pipe; 76. Electric heating pipe; 77. Discharge port; 100. Door body; 200. Torsion spring; 300. Stabilizing plate. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] See attached document Figure 1-7 A rural domestic sewage pretreatment device includes a shell 1, a rotatable filter barrel 2 inside the shell 1, a squeezing device inside the filter barrel 2, a dewatering filter chamber formed between the filter barrel 2 and the squeezing device, a sewage chamber 10 formed between the filter barrel 2 and the shell 1, and a discharge device fixed to the shell 1 at the top of the dewatering filter chamber.

[0029] Wastewater enters the dewatering and filtration chamber and is filtered through the filter holes of filter barrel 2. The residue in the wastewater remains in the dewatering and filtration chamber. The centrifugal force generated by the rotation of filter barrel 2 can further discharge the water in the residue. The residue can also be squeezed by the squeezing device to further discharge the water. After the water is discharged, the residue can be discharged outdoors by the discharge device. At this point, the residue is basically dry, and the wastewater has been treated and will not cause pollution to the environment.

[0030] The extrusion device includes a cylinder 3 fixed on the housing 1, and a column 4 located inside the cylinder 3. The cylinder 3 is provided with a number of movable push columns 32, and the column 4 is fixed with a number of push columns 41 that cooperate with the push columns 32. A power device 5 for driving the filter barrel 2 and the column 4 to rotate is installed at the bottom of the housing 1.

[0031] When the residue is squeezed and drained, the power device 5 drives the filter barrel 2 and the cylinder 3 to rotate. The rotation of the filter barrel 2 generates centrifugal force, and the column 4 will rotate so that the push column 41 pushes the pushed column 32, thereby causing the pushed column 32 to move into the dewatering filter chamber, which can squeeze the residue.

[0032] The discharge device includes an inflation mechanism 6 and a suction mechanism 7. The inflation mechanism 6 includes an electric inflation box 65 fixed outside the housing 1, and several exhaust pipes 63 provided on the column 4 that can communicate with the dewatering and filtering chamber. The air outlet of the electric inflation box 65 is connected to the exhaust pipes 63. The suction mechanism 7 includes a suction fan 71 fixed outside the housing 1, and a plowing rod 72 located at the top of the dewatering and filtering chamber. The plowing rod 72 is fixed below the suction pipe 74. A heating pipe 75 is fixed and connected between the suction pipe 74 and the air inlet of the suction fan 71.

[0033] After the residual moisture is discharged, high-pressure gas can be introduced into the dewatering filter chamber through the electric air box 65 to loosen the residue. As the filter barrel 2 continues to rotate, the plow rod 72 can loosen the residue at the top of the dewatering filter chamber. The suction fan 71 can be started to suck away the loose residue. While sucking away, the heating tube 75 will dry the residue. In this way, the dried residue can be recycled.

[0034] Specifically, such as Figures 4-7 As shown, the power unit 5 includes a motor 51 fixed outside the housing 1, and a mounting base 52 fixed to the bottom of the filter barrel 2. The mounting base 52 is fixedly mounted with a mounting bracket 53, which is fixedly mounted on the output shaft of the motor 51. The bottom of the filter barrel 2 is provided with a bottom hole 57. The bottom of the cylinder 3 is fixedly mounted with a circular seat 55, which is provided with a circular stabilizing groove 56. The bottom of the filter barrel 2 is rotatably mounted in the circular stabilizing groove 56. The bottom of the circular seat 55 is fixedly mounted with a gear reducer 54, which is connected to the end of the output shaft of the motor 51 through a coupling. The bottom of the column 4 is mounted with a base 42, and the power shaft of the gear reducer 54 is fixedly connected to the base 42.

[0035] The motor 51 can drive the mounting base 52 to rotate, and the mounting base 52 can drive the filter barrel 2 to rotate at high speed, so that it generates centrifugal force for dehydration. The output shaft of the motor 51 is reduced by the gear reducer 54, so that the power shaft of the gear reducer 54 drives the column 4 to rotate. This reduces the speed of the column 4, but increases its torque, thereby pushing the column 41 to push the pushed column 32 to move.

[0036] Specifically, the surface of the cylinder 3 is provided with several slots 31, the pushed column 32 is located in the slots 31, and a rubber belt 33 is fixedly installed between the pushed column 32 and the slots 31.

[0037] When column 4 rotates, the pushing column 41 is pushed when it passes the pushed column 32, which stretches the rubber belt 33. When the pushing column 41 moves away, the rubber belt 33 will rebound and drive the pushed column 32 to reset. This causes the pushed column 32 to move back and forth, which continuously squeezes the residue and drains the water.

[0038] In this embodiment, as Figure 5As shown, the cylinder 3 also includes a circular frame 34, which has an air supply groove 35. The surface of the air supply groove 35 has several exhaust holes 64. The inflation mechanism 6 also includes a through hole 62 in the column 4. The push column 41 includes an exhaust box 61, which is connected to the through hole 62. Several exhaust pipes 63 are fixed and connected to the periphery of the exhaust box 61. The exhaust box 61 is slidably installed in the air supply groove 35. An installation sleeve 66 is fixedly installed in the top of the through hole 62. The installation sleeve 66 is rotatably connected to a connecting pipe 67. This arrangement can ensure the normal rotation of the column 4 and allow air to be supplied into the through hole. The air outlet of the electric inflation box 65 is fixed and connected to an air supply pipe 68. The air supply pipe 68 and the connecting pipe 67 are fixed and connected. A door 100 is provided at the exhaust hole 64. A torsion spring 200 is provided between the door 100 and the wall of the air supply groove 35.

[0039] When the electric air box 65 is started, the gas can be fed into the through hole 62 through the air supply pipe 68 and the connecting pipe 67, and finally into the exhaust box 61. The gas in the exhaust box 61 is discharged from the air supply trough 35 through the exhaust pipe 63. Finally, the door 100 is opened by air pressure, so that the gas is discharged from the exhaust hole 64 into the dehydration and filtration chamber.

[0040] It should be noted that the exhaust box 61 can seal the air delivery channel 35, ensuring that the gas has sufficient pressure to be discharged from the circular frame 34. Furthermore, the torsion spring 200 ensures that the door 100 can only be opened from inside the air delivery channel 35, preventing residue from entering.

[0041] In this embodiment, as Figure 3 As shown, the suction pipe 74 passes through the top of the housing 1, the suction pipe 74 is fixed and connected to the suction head 73, the plowing rod 72 is fixed inside the suction head 73, the heating pipe 75 is provided with an electric heating pipe 76, and the suction fan 71 is provided with a discharge port 77.

[0042] Once the residue is loosened, it is sucked into the suction pipe 74 through the suction head 73, and then enters the heating pipe 75. The gas is heated by the electric heating pipe 76, which dries the residue. Finally, the dried residue is discharged from the discharge port 77.

[0043] In addition, in this embodiment, drain outlets 11 are provided on both sides of the shell 1, the sewage chamber 10 is connected to the drain outlets 11, a sewage hopper 8 is fixedly installed on the top of the shell 1, the sewage hopper 8 is fixed and connected to a sewage pipe 9 whose end is located in the dewatering filter chamber, the shell 1 is provided with two symmetrically arranged stabilizing plates 300, the filter bucket 2 is located between the two stabilizing plates 300, the bottom of the shell 1 is provided with a ramp 12 arranged around the filter bucket 2, a treatment box 13 is fixed outside the shell 1, the treatment box 13 is connected to the drain outlets 11, a suction plate 15 is inserted inside the treatment box 13, and the treatment box 13 includes a drain pipe 14;

[0044] After being filtered by the filter bucket 2, the sewage is discharged into the sewage chamber 10. The sewage flows through the slope 12 and is discharged from the drain outlet 11 into the treatment tank 13. The sewage entering the treatment tank 13 is absorbed by the suction plate 15. Finally, the treated sewage can be directly discharged from the drain pipe 14. In this way, the sewage generated by the rural mobile kitchen is completely treated and will not cause damage to the environment.

[0045] Working principle: Before operation, all components are powered on. Then, kitchen wastewater is discharged into the wastewater hopper 8. Through the wastewater pipe 9, the wastewater can be input into the dewatering and filtering chamber. The wastewater is filtered through the filter holes of the filter bucket 2, leaving the residue in the dewatering and filtering chamber. After standing for several minutes and when the wastewater stops being discharged, the motor 51 is started. The motor 51 drives the mounting bracket 53 to rotate, causing the filter bucket 2 to rotate. The high-speed rotation of the filter bucket 2 generates centrifugal force, and the wastewater in the residue is discharged again through the filter holes. At this time, the motor 51 also drives the column 4 to rotate through the gear reducer 54. The rotation of the column 4 causes the push column 41 to rotate. When the push column 41 rotates, it will contact the pushed column 32, causing the push column 32 to be pushed. The rubber belt 33 will be stretched, and the push column 32 will move into the dewatering and filtering chamber to squeeze the residue, so that the water in the residue is discharged again. In this way, the wastewater can be completely discharged.

[0046] The discharged wastewater enters the wastewater chamber 10, and then enters the treatment tank 13 through the drain outlet 11. The suction plate 15 can absorb the oil in the wastewater, so that the oil-removed wastewater is discharged from the drain pipe 14. In this way, the wastewater meets the discharge standards and will not cause pollution to the environment.

[0047] Once the sewage stops being discharged, start the electric air box 65. The gas generated by the electric air box 65 is discharged into the through hole 62 through the air pipe 68. Then the gas enters the exhaust box 61 and is discharged into the air supply trough 35 through the exhaust pipe 63. Then it is discharged into the dewatering and filtration chamber through the exhaust hole 64, which can loosen the residue.

[0048] The suction fan 71 is started to generate suction, and the motor 51 continues to operate, causing the residue to continue to rotate in the filter barrel 2. The blown residue will be loosened, and the plowing action of the plow rod 72 will loosen all the residue at the top. Then, the suction force can suck the residue into the suction head 73 through the plow rod 72. The residue is then transported to the heating tube 75 through the air suction pipe 74. The electric heating tube 76 can heat the air, thereby drying the residue. Finally, the residue will be discharged from the discharge port 77. The discharged material has been dehydrated and can be used, thus protecting the environment.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pretreatment device for rural domestic sewage, comprising a shell (1), characterized in that, The housing (1) is provided with a rotatable filter barrel (2), the filter barrel (2) is provided with a squeezing device, a dewatering filter chamber is formed between the filter barrel (2) and the squeezing device, and a sewage chamber (10) is formed between the filter barrel (2) and the housing (1). The top of the dewatering filter chamber is provided with a discharge device fixed on the housing (1). The extrusion device includes a cylinder (3) fixed on the housing (1) and a column (4) located inside the cylinder (3). The cylinder (3) is provided with a plurality of movable push columns (32). The column (4) is fixed with a plurality of push columns (41) that cooperate with the push columns (32). The bottom of the housing (1) is equipped with a power device (5) for driving the filter barrel (2) and the column (4) to rotate. The discharge device includes an inflation mechanism (6) and a suction mechanism (7). The inflation mechanism (6) includes an electric inflation box (65) fixed outside the housing (1) and several exhaust pipes (63) on the column (4) that can communicate with the dewatering filter chamber. The air outlet of the electric inflation box (65) is connected to the exhaust pipes (63). The suction mechanism (7) includes a suction fan (71) fixed outside the housing (1) and a plowing rod (72) located at the top of the dewatering filter chamber. The plowing rod (72) is fixed below the suction pipe (74). A heating pipe (75) is fixed and connected between the suction pipe (74) and the air inlet of the suction fan (71). The cylinder (3) also includes a circular frame (34), which has an air supply groove (35). The surface of the air supply groove (35) has several exhaust holes (64). The inflation mechanism (6) also includes a through hole (62) in the column (4). The push column (41) includes an exhaust box (61), which is connected to the through hole (62). Several exhaust pipes (63) are fixed and connected to the periphery of the exhaust box (61). The round box (61) is slidably installed in the air supply channel (35). An installation sleeve (66) is fixedly installed in the top of the through hole (62). The installation sleeve (66) is rotatably connected to the connecting pipe (67). The air outlet of the electric air box (65) is fixed and connected to the air supply pipe (68). The air supply pipe (68) and the connecting pipe (67) are fixed and connected. A door (100) is provided at the exhaust hole (64). A torsion spring (200) is provided between the door (100) and the wall of the air supply channel (35). The shell (1) has drain outlets (11) on both sides. The sewage chamber (10) and the drain outlets (11) are connected. A sewage hopper (8) is fixedly installed on the top of the shell (1). The sewage hopper (8) is fixed and connected to a sewage pipe (9) whose end is located in the dewatering filter chamber. The shell (1) has two symmetrically arranged stabilizing plates (300). The filter bucket (2) is located between the two stabilizing plates (300). The bottom of the shell (1) is equipped with a ramp (12) arranged around the filter bucket (2). A treatment box (13) is fixed outside the shell (1). The treatment box (13) is connected to the drain outlets (11). A suction plate (15) is inserted inside the treatment box (13). The treatment box (13) includes a drain pipe (14).

2. The rural domestic sewage pretreatment equipment according to claim 1, characterized in that, The power unit (5) includes a motor (51) fixed outside the housing (1) and a mounting base (52) fixed to the bottom of the filter barrel (2). The mounting base (52) is fixedly mounted with a mounting bracket (53), which is fixedly mounted on the output shaft of the motor (51). The bottom of the filter barrel (2) is provided with a bottom hole (57). The bottom of the cylinder (3) is fixedly mounted with a circular seat (55). The circular seat (55) is provided with a circular stabilizing groove (56). The bottom of the filter barrel (2) is rotatably mounted in the circular stabilizing groove (56).

3. The rural domestic sewage pretreatment equipment according to claim 2, characterized in that, A gear reducer (54) is fixedly installed at the bottom of the circular seat (55). The gear reducer (54) is connected to the end of the output shaft of the motor (51) via a coupling. A base (42) is installed at the bottom of the column (4). The power shaft of the gear reducer (54) is fixedly connected to the base (42).

4. The rural domestic sewage pretreatment equipment according to claim 1, characterized in that, The surface of the cylinder (3) is provided with several slots (31), the pushed column (32) is located in the slot (31), and a rubber belt (33) is fixedly installed between the pushed column (32) and the slot (31).

5. A rural domestic sewage pretreatment device according to claim 1, characterized in that, The suction pipe (74) penetrates the top of the housing (1), the suction pipe (74) is fixed and connected to the suction head (73), the plowing rod (72) is fixed inside the suction head (73), the heating pipe (75) is provided with an electric heating pipe (76), and the suction fan (71) is provided with a discharge port (77).

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