Sludge drainage equipment for sewage treatment

Abstract

The utility model belongs to the technical field of water, wastewater, sewage or sludge treatment, and relates to a sludge draining device for sewage treatment, including a sludge pretreatment tank, wherein a first accommodating chamber and a second accommodating chamber are provided in the sludge pretreatment tank, wherein the first accommodating chamber and the second accommodating chamber are separated by a mud discharge plate, wherein a filter screen is installed above the mud discharge plate in the first accommodating chamber, and a driving mechanism is connected to the middle of the filter screen; wherein a mud discharge pipe is installed in the second accommodating chamber, and the mud discharge pipe is connected to the first accommodating chamber through the discharge port of the mud discharge plate. The utility model sets the transmission coordination between the driving mechanism and the filter screen, and sets the motor to a small-angle reciprocating rotation mode during filtering, wherein the motor starts and drives the rotating shaft to rotate, and then drives the filter screen, so that the filter screen reciprocates at a small angle, and the sewage and sludge are quickly filtered, and the sludge in the sewage is efficiently separated, and the labor intensity of maintenance and cleaning of the staff is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water, wastewater, sewage or sludge treatment, relates to sludge treatment equipment, in particular to sludge draining equipment for sewage treatment. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. It is widely used in many fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. Sewage contains a lot of impurities such as sludge. Existing sewage treatment equipment needs to pre-treat the impurities in the sewage, and then perform physical or chemical sedimentation to discharge the accumulated sludge, and then filter it with a mud press to form a sludge cake before discharging. Commonly used sewage treatment methods include physical sedimentation and chemical sedimentation. For example, the mechanical dehydration method is to dehydrate river sludge through mechanical equipment such as filter press and vacuum system. After treatment, the sludge is reduced and recycled. It uses centrifugal machinery, filter press machinery or vacuum method for mechanical dehydration. The equipment occupies a large area, consumes electricity, and has a large investment. After dehydration, the sludge needs to be buried, incinerated or other secondary harmless treatment.

[0003] When producing artificial boards, the raw materials need to be pre-processed to remove bark, branches, leaves, weeds, mud, scrap metal and other debris, and cut and chip the raw materials. During this process, a certain amount of sewage will be generated. Since sewage contains a large amount of wood fiber, impurities and other sludge, during the pre-treatment of sewage, the sludge aggregation is easy to clog the filter structure. Due to the large size of the sewage treatment device, the filter structure is generally located at a higher position of the sewage treatment device, or is laid near the sludge settling tank, which makes the filter structure difficult to clean and the labor intensity of subsequent maintenance and cleaning is high. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the purpose of the utility model is to provide a sludge drainage equipment for sewage treatment, which can achieve efficient separation of sludge and sewage, make the filter structure easy to clean when blocked, and reduce the labor intensity of subsequent maintenance and cleaning of the staff.

[0005] Technical Solution

[0006] A sludge draining device for sewage treatment comprises a sludge pretreatment tank, wherein a first accommodating chamber and a second accommodating chamber are provided in the sludge pretreatment tank, wherein the first accommodating chamber and the second accommodating chamber are separated by a sludge discharge plate, wherein a filter screen is installed above the sludge discharge plate in the first accommodating chamber, wherein a driving mechanism is connected to the middle of the filter screen; wherein a sludge discharge pipe is installed in the second accommodating chamber, wherein the sludge discharge pipe is connected to the first accommodating chamber through a discharge port of the sludge discharge plate.

[0007] In a preferred disclosed example of the utility model, the driving mechanism includes a motor and a rotating shaft connected to the output end of the motor, the rotating shaft is located in the middle of the filter screen, and the two ends of the rotating shaft pass through the two sides of the sludge pretreatment tank and extend outside to be rotatably connected to the sludge pretreatment tank.

[0008] Furthermore, a spray assembly is provided in the first accommodating chamber above the filter screen, and the spray assembly is connected to a water pipe.

[0009] In a preferred disclosed example of the utility model, the spray assembly comprises a plurality of spray pipes, and the spray pipes are connected to a plurality of spray heads.

[0010] In a preferred disclosed example of the utility model, the mud discharge plate is funnel-shaped.

[0011] In a preferred disclosed example of the utility model, one end of the mud discharge pipe away from the mud discharge plate passes through the sludge pretreatment tank and is connected to the mud pressing mechanism, and a sludge pump is installed on the mud discharge pipe.

[0012] According to a preferred disclosed example of the utility model, both the water pipe and the mud discharge pipe are equipped with stop valves.

[0013] The sludge draining equipment for sewage treatment disclosed by the utility model is configured to cooperate with the transmission of the driving mechanism and the filter screen. When filtering the sludge, the motor is configured to be in a small-angle reciprocating rotation mode, the motor is started and drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the filter screen to rotate, so that the filter screen performs a small-angle reciprocating rotation, so that the sewage and the sludge can be filtered quickly, thereby realizing efficient separation of impurities in the sewage and the sewage; when the filter screen is blocked, the impurities on the filter screen are first salvaged and cleaned, and then the motor is configured to be in a high-frequency rotation mode, and under the action of the high-speed rotation of the filter screen, a large centrifugal force is generated, and the sludge blocked on the filter screen is thrown off under the action of the centrifugal force, thereby realizing simple cleaning of the sludge on the filter screen.

[0014] Beneficial Effects

[0015] The sludge draining equipment for sewage treatment disclosed by the utility model utilizes a closed box structure to place sewage treatment inside for mud and water separation, which is more environmentally friendly and reasonable. By setting the transmission coordination between the driving mechanism and the filter screen, when filtering the sludge, the motor is set to a small-angle reciprocating rotation mode, the motor starts and drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the filter screen to rotate, so that the filter screen reciprocates at a small angle, so that the sewage and sludge can be quickly filtered, thereby realizing efficient separation of impurities and sewage in the sewage, which can effectively reduce the labor intensity of the staff for later maintenance and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 . A three-dimensional diagram of a sludge draining device for sewage treatment;

[0017] Figure 2 .Cross-sectional view of sludge draining equipment for sewage treatment;

[0018] Among them, the names of the components are as follows: 1. Sludge pretreatment tank; 2. First accommodating chamber; 3. Second accommodating chamber; 4. Sludge discharge plate; 5. Sludge discharge pipe; 6. Filter screen; 7. Motor; 8. Rotating shaft; 9. Water pipe; 10. Spray pipe; 11. Spray head; 12. Sludge pump; 13. Stop valve. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with embodiments so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0020] A sludge draining device for sewage treatment comprises a sludge pretreatment tank 1, wherein a first accommodating chamber 2 and a second accommodating chamber 3 are arranged in the sludge pretreatment tank 1, wherein the first accommodating chamber 2 and the second accommodating chamber 3 are separated by a mud discharge plate 4, and the mud discharge plate 4 is funnel-shaped for convenient mud discharge. A mud discharge pipe 5 is installed in the second accommodating chamber 2, and the mud discharge pipe 5 is connected with the first accommodating chamber 2 through the discharge port of the mud discharge plate 4, and the first accommodating chamber 2 is used to carry the filtered sewage and sludge, and the second accommodating chamber 3 is used to carry the first accommodating chamber 2 and the mud discharge pipe 5; the end of the mud discharge pipe 5 away from the mud discharge plate 4 passes through the sludge pretreatment tank 1 and is connected to the mud pressing mechanism, and a sludge pump 12 is installed on the mud discharge pipe 5. Under the power of the sludge pump 12, the sludge in the sludge pretreatment tank 1 is transported to the mud press through the mud discharge pipe 5 for filtration, and the sludge forms a sludge cake, thereby realizing efficient separation of sludge and sewage. A filter screen 6 is installed above the mud discharge plate 4 in the first accommodating chamber 2, and a driving mechanism is connected to the middle of the filter screen 6. The driving mechanism includes a motor 7 and a rotating shaft 8 connected to the output end of the motor. The rotating shaft 8 is located in the middle of the filter screen 6, and the two ends of the rotating shaft 8 penetrate the two sides of the sludge pretreatment tank 1 and extend to the outside to be rotatably connected to the sludge pretreatment tank 1. A spray assembly is provided above the filter screen 6 in the first accommodating chamber 2. The spray assembly is connected to a water pipe 9. The water source of the water pipe 9 can come from the clarified sewage left to stand during the sedimentation of the sludge pretreatment tank 1 or the sewage filtered out by the mud press for secondary use. Stop valves are installed on the water pipe 9 and the mud discharge pipe 5. The spray assembly includes a plurality of spray pipes 10, and the spray pipes 10 are connected to a plurality of spray heads 11.

[0021] When filtering the sludge, the motor is set to a small-angle reciprocating rotation mode, the motor starts and drives the shaft to rotate, the shaft rotation drives the filter to rotate, so that the filter reciprocates at a small angle, the sewage can be filtered quickly, and the impurities in the sewage are separated from the sewage efficiently; when the filter is blocked, the impurities on the filter are first salvaged and cleaned, and then the motor is set to a high-frequency rotation mode. Under the high-speed rotation of the filter, a large centrifugal force is generated, and the sludge blocked on the filter is thrown off under the action of the centrifugal force, making the cleaning of the sludge on the filter simple, and effectively reducing the labor intensity of the staff's later maintenance and cleaning. At the same time, open the stop valve of the water pipe, and the water from the water pipe comes out from the spray head through the spray pipe to further clean the sludge on the filter.

[0022] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the specification of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A sludge draining device for sewage treatment, comprising a sludge pretreatment tank (1), wherein a first accommodating chamber (2) and a second accommodating chamber (3) are provided in the sludge pretreatment tank (1), characterized in that: The first accommodating chamber (2) and the second accommodating chamber (3) are separated by a mud discharge plate (4); a filter screen (6) is installed above the mud discharge plate (4) in the first accommodating chamber (2); a driving mechanism is connected to the middle of the filter screen (6); a mud discharge pipe (5) is installed in the second accommodating chamber (3); the mud discharge pipe (5) is connected to the first accommodating chamber (2) through a discharge port of the mud discharge plate (4).

2. The sludge draining equipment for sewage treatment according to claim 1, characterized in that: The driving mechanism comprises a motor (7) and a rotating shaft (8) connected to the output end of the motor (7); the rotating shaft (8) is located in the middle of the filter screen (6), and both ends of the rotating shaft (8) penetrate through both sides of the sludge pretreatment tank (1) and extend outside to be rotatably connected to the sludge pretreatment tank (1).

3. The sludge draining equipment for sewage treatment according to claim 1, characterized in that: A spray assembly is provided in the first accommodating chamber (2) above the filter screen (6), and the spray assembly is connected to a water pipe (9).

4. The sludge draining equipment for sewage treatment according to claim 3, characterized in that: The spray assembly comprises a plurality of spray pipes (10), and the spray pipes (10) are connected to a plurality of spray heads (11).

5. The sludge draining equipment for sewage treatment according to claim 3, characterized in that: Both the water pipe (9) and the mud discharge pipe (5) are equipped with stop valves (13).

6. The sludge draining equipment for sewage treatment according to claim 1, characterized in that: The mud discharge plate (4) is funnel-shaped.

7. The sludge draining equipment for sewage treatment according to claim 1, characterized in that: One end of the mud discharge pipe (5) away from the mud discharge plate (4) passes through the sludge pretreatment tank (1) and is connected to the mud pressing mechanism, and a sludge pump (12) is installed on the mud discharge pipe (5).

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