Domestic sewage and wastewater treatment device

Abstract

The invention relates to the technical field of sewage treatment, and discloses a domestic sewage and wastewater treatment device which comprises a sewage treatment component, a filter tank is arranged at the upstream of the sewage treatment component, a sewage inlet of the filter tank is connected with a sewage pipeline, a water outlet of the filter tank is connected with the sewage treatment component, and a filter plate and a pushing component are arranged in the filter tank; the filter plate is obliquely fixed in the filter tank; the material pushing part comprises a horizontal moving part, a pushing plate and a telescopic rod, the horizontal moving part is fixed to the inner wall of the filtering tank, the first end of the pushing plate is fixedly connected with the horizontal moving part, the second end of the pushing plate is fixedly connected with the telescopic rod, and the pushing plate abuts against the filtering plate. And the energy consumption and the maintenance cost can be obviously reduced while automatic dredging is performed.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly to a domestic sewage and wastewater treatment device. Background Art

[0002] The treatment of domestic sewage and wastewater refers to the process of purifying the washing water, fecal sewage, etc. discharged by residents in their daily lives, including but not limited to rural environments, enterprise units, scenic spots, hotels, restaurants, station service areas, etc. where domestic sewage is generated. In recent years, the continuous growth of the population has led to an increasing discharge of rural domestic sewage, which has in turn promoted the steady expansion of the rural domestic sewage treatment market scale. Due to problems such as scattered rural households, lack of drainage pipelines, and large fluctuations in water consumption, rural sewage cannot form large-scale sewage treatment centers, and most of them are one or three or five households sharing a sewage treatment device through pipelines.

[0003] At present, for rural domestic sewage and wastewater treatment devices, the main structure of the sewage and wastewater treatment device includes: a filtration tank, a biochemical treatment tank, a membrane tank, and a disinfection tank. In the filtration tank, the filtration of impurities and sludge in the sewage mainly relies on the filter plate. During the long-term treatment process, a large amount of sludge accumulates in the filtration tank and cannot be cleaned in time, blocking the filter plate and preventing the filter plate from filtering. Manual cleaning of the sludge is time-consuming and laborious, which in turn affects the subsequent sewage treatment. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a domestic sewage and wastewater treatment device, which can significantly reduce energy consumption and maintenance costs while automatically dredging.

[0005] An embodiment of the present invention provides a domestic sewage and wastewater treatment device, including: a sewage treatment component, a filtration tank is provided upstream of the sewage treatment component, the sewage inlet of the filtration tank is connected to a sewage pipeline, the water outlet is connected to the sewage treatment component, and a filter plate and a pushing component are provided in the filtration tank; the filter plate is obliquely fixed inside the filtration tank; the pushing component includes: a horizontal moving component, a pushing plate, and a telescopic rod. The horizontal moving component is fixed to the inner wall of the filtration tank, the first end of the pushing plate is fixedly connected to the horizontal moving component, the second end of the pushing plate is fixedly connected to the telescopic rod, and the pushing plate abuts against the filter plate.

[0006] Optionally, a sewage discharge port is provided on the side of the filtration tank, a first sliding plate is slidably connected at the sewage inlet, a second sliding plate is slidably connected at the sewage discharge port, a pulley is fixed inside the filtration tank, and a connecting rope sequentially bypasses the first sliding plate, the pulley, and the second sliding plate; the first sliding plate is connected to a pushing component, which drives the first sliding plate to slide horizontally to open or close the sewage inlet, and the first sliding plate pulls the second sliding plate to move vertically through the connecting rope to open or close the sewage discharge port.

[0007] Optionally, the horizontal moving component includes a first ball screw, the first ball screw is fixed to the inner wall of the filter tank, and the nut of the first ball screw is fixedly connected to the telescopic rod.

[0008] Optionally, the pushing component includes a second ball screw, the second ball screw is fixed to the inner wall of the filter tank, is arranged parallel to the first ball screw, and the nut of the second ball screw is fixedly connected to the first sliding plate.

[0009] Optionally, a transmission component is connected between the horizontal moving component and the pushing component, and the horizontal moving component drives the pushing component.

[0010] Optionally, the transmission component includes: a synchronous belt, the first ball screw and the second ball screw are connected by synchronous belt drive, the rotation directions of the first ball screw and the second ball screw are opposite, the first ball screw includes a motor, and the motor drives the nuts of the two ball screws to move towards each other simultaneously.

[0011] Optionally, there are two groups of the horizontal moving component, the pushing component and the transmission component, which are symmetrically fixed on both sides of the inner wall of the filter tank.

[0012] Optionally, a brush is fixed to the lower side of the push plate.

[0013] Optionally, an elastic component is connected between the lower part of the push plate and the brush.

[0014] Optionally, the elastic component includes: a spring and a buffer plate, the first end of the spring is elastically connected to the lower side of the push plate, the second end of the spring is elastically connected to the fixing plate of the brush, and a plurality of buffer plates are connected between the spring and the push plate as well as the brush.

[0015] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art: The present invention adopts a combined design of an inclined filter plate and an automatic feeding component. The inclined filter plate enables the liquid components to quickly penetrate and drain through the gravity self-draining mechanism, while promoting the natural sliding of larger particle sludge, effectively reducing the subsequent treatment load. The feeding component consists of a telescopic rod and a push plate, which centrally pushes the residual sludge to the sewage outlet. Its unique advantages are reflected in that gravity and machinery cooperate to drain sludge, reducing the energy consumption of the device, reducing the load on the push plate, extending the service life of the equipment, effectively avoiding the common filter plate blockage problem in the traditional design, improving the treatment efficiency, and significantly improving the overall operation stability. This design achieves an efficient, energy-saving, stable and reliable sewage treatment effect. Description of the Drawings

[0016] Figure 1 It is a three-dimensional schematic diagram of a domestic sewage and wastewater treatment device provided by the embodiment of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the feeding component provided by the embodiment of the present invention;

[0018] Figure 3 Schematic connection diagram of the filter tank provided by an embodiment of the present invention;

[0019] Figure 4 Top view of the filter tank provided by an embodiment of the present invention;

[0020] Figure 5 Schematic structural diagram of the push plate provided by an embodiment of the present invention.

[0021] Explanation of reference numerals:

[0022] 1. Filter tank; 101. Sewage inlet; 102. Sewage outlet; 103. Water outlet; 2. Sewage treatment component; 3. Filter plate; 4. Pushing component; 400. Horizontal moving component; 401. Push plate; 402. Telescopic rod; 403. Brush; 404. Elastic component; 405. Spring; 406. Buffer plate; 5. First ball screw; 501. Second ball screw; 502. Motor; 6. First slide plate; 601. Second slide plate; 602. Pulley; 603. Connecting rope; 7. Transmission component; 700. Timing belt. Detailed implementation manners

[0023] The following combines the accompanying drawings to describe in detail a specific implementation manner of the present invention. However, it should be understood that the protection scope of the present invention is not limited by the specific implementation manner.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0025] The treatment of domestic sewage and wastewater refers to the process of purifying the washing water, fecal sewage, etc. discharged by residents in their daily lives, including but not limited to rural environments, enterprise units, scenic spots, hotels, restaurants, station service areas, etc. where domestic sewage is generated. In recent years, the continuous growth of the population has led to an increasing discharge of rural domestic sewage, which has in turn promoted the steady expansion of the rural domestic sewage treatment market scale. Due to problems such as scattered rural households, lack of drainage pipelines, and large fluctuations in water consumption, rural sewage cannot form large-scale sewage treatment centers. Most of them are one or three or five households sharing sewage treatment devices through pipelines.

[0026] At present, for the rural domestic sewage and wastewater treatment device, the main structure of the sewage and wastewater treatment device includes: a filtration tank, a biochemical treatment tank, a membrane tank, and a disinfection tank. In the filtration tank, the filter plate is mainly relied on to filter impurities and sludge in the sewage. During the long-term treatment process, a large amount of sludge accumulates in the filtration tank and cannot be cleaned in time, blocking the filter plate and preventing the filter plate from filtering. Manual cleaning of the sludge is time-consuming and laborious, thus affecting the subsequent sewage treatment.

[0027] Based on the above problems, the present invention provides a domestic sewage and wastewater treatment device, which can significantly reduce energy consumption and maintenance costs while automatically dredging.

[0028] The present invention will be described below through several specific embodiments. In order to keep the description clear and concise for the following embodiments of the present invention, the detailed description of known functions and known components may be omitted. When any component of the embodiments of the present invention appears in more than one drawing, the component may be denoted by the same reference numeral in each drawing.

[0029] Figure 1 A three-dimensional schematic diagram of a domestic sewage and wastewater treatment device provided for an embodiment of the present invention; Figure 2 A structural schematic diagram of a pushing component provided for an embodiment of the present invention; Figure 3 A connection schematic diagram of a filtration tank provided for an embodiment of the present invention; Figure 4 A top view of a filtration tank provided for an embodiment of the present invention; Figure 5 A structural schematic diagram of a push plate provided for an embodiment of the present invention.

[0030] As Figure 1 and Figure 3 shown, the embodiment of the present invention provides a domestic sewage and wastewater treatment device, including a sewage treatment component 2. An upstream of the sewage treatment component 2 is provided with a filtration tank 1. An inlet 101 of the filtration tank 1 is connected to a sewage pipeline, and an outlet 103 is connected to the sewage treatment component 2. A filter plate 3 and a pushing component 4 are arranged in the filtration tank 1; the filter plate 3 is obliquely fixed inside the filtration tank 1; the pushing component 4 includes: a horizontal moving component 400, a push plate 401, and a telescopic rod 402. The horizontal moving component 400 is fixed to the inner wall of the filtration tank 1. A first end of the push plate 401 is fixedly connected to the horizontal moving component 400, and a second end of the push plate 401 is fixedly connected to the telescopic rod 402. The push plate 401 abuts against the filter plate 3.

[0031] In the sewage treatment system, the filtration tank 1 is set upstream of the sewage treatment component 2 as a key pretreatment unit. The sewage inlet 101 of the filtration tank 1 is connected to the sewage delivery pipeline, and the water outlet 103 is connected to the subsequent sewage treatment equipment through a sealed interface. This filtration tank 1 is mainly composed of an inclined filtration plate 3 and an automatic feeding component 4. The filtration plate 3 is fixedly installed inside the filtration tank 1 at an inclined angle. This inclined design has multiple advantages: Firstly, when sewage passes through the filtration plate 3, the liquid components can quickly penetrate through the filtration plate 3 and enter the water outlet 103; Secondly, the solid sludge will naturally slide on the surface of the filtration plate 3 due to gravity. The sludge with larger particles can automatically slide to the lowest end of the filtration plate 3 and be discharged through a specially designed sewage outlet 102. This gravity self-discharge mechanism can effectively reduce the amount of sludge that the subsequent feeding component 4 needs to handle, significantly reducing the energy consumption of equipment operation. The feeding component 4 is composed of a horizontal moving component 400, a telescopic rod 402, and a pushing plate 401 to form an integral structure. The horizontal moving component 400 drives the telescopic rod 402 to move horizontally, and the telescopic rod 402 pushes the pushing plate 401 to move along the inclined surface of the filtration plate 3, pushing the remaining sludge that fails to be discharged by gravity to the sewage outlet 102, greatly reducing the working load of the feeding component 4 and effectively avoiding the problem of filter plate blockage commonly seen in traditional designs.

[0032] Optionally: Refer to Figure 1 and Figure 3 , there is a sewage outlet 102 on the side of the filtration tank 1. A first sliding plate 6 is slidably connected to the sewage inlet 101, and a second sliding plate 601 is slidably connected to the sewage outlet 102. A pulley 602 is fixed inside the filtration tank 1. A connecting rope 603 sequentially bypasses the first sliding plate 6, the pulley 602, and the second sliding plate 601; The first sliding plate 6 is connected to a pushing component to drive the first sliding plate 6 to slide horizontally to open or close the sewage inlet 101. The first sliding plate 6 pulls the second sliding plate 601 to move vertically through the connecting rope 603 to open or close the sewage outlet 102.

[0033] The system adopts a mechanically linked double-slide plate design, which mainly includes a first slide plate 6 installed on the lower side of the sewage inlet 101, a second slide plate 601 arranged on the inner side of the sewage outlet 102, a guide pulley 602 fixed on the box, and a high-strength nylon connecting rope 603 connecting the two. Filtration stage: When the filter tank 1 is in normal working condition, the second slide plate 601 remains in a downward state under the action of gravity and the tension of the connecting rope 603, completely covering the sewage outlet 102 to form a seal; at the same time, the first slide plate 6 is in a retracted position, so that the sewage inlet 101 is completely open. At this time, the sewage can smoothly enter the filter tank 1 through the sewage inlet 101, and the solid-liquid separation is achieved through the inclined filter plate 3, and the intercepted sludge is temporarily accumulated on the surface of the filter plate 3. Mud discharge stage: When the sludge accumulation thickness on the filter plate 3 reaches the threshold, the telescopic rod 402 of the pusher component 4 begins to extend, and while pushing the push plate 401 to move, the first slide plate 6 slides in parallel, gradually closing the sewage inlet 101 and cutting off the sewage inflow. At the same time, the second slide plate 601 is pulled vertically upward by the connecting rope 603 passing around the pulley 602, and the sewage outlet 102 is opened. At this time, the push plate 401 continues to advance, pushing all the accumulated sludge into the sewage outlet 102 for discharge. During the entire sludge discharge, the sewage inlet 101 remains completely closed to prevent sewage from continuing to enter and affect the sludge discharge effect. Reset stage: After the sludge discharge is completed, the pushing component 4 automatically retracts, and the first slide plate 6 slides in the opposite direction to reopen the sewage inlet 101, while the second slide plate 601 moves downward under the action of gravity and reseals the sewage outlet 102 through the linkage of the connecting rope 603. The system returns to the initial filtering state to achieve continuous cycle operation. This innovative design not only ensures the seamless connection between the filtration and sludge discharge processes, but also makes the equipment operation more energy-saving and reliable.

[0034] Optional: Reference Figure 4 The horizontal moving component 400 includes a first ball screw 5 , which is fixed to the inner wall of the filter tank 1 , and a nut of the first ball screw 5 is fixedly connected to the telescopic rod 402 .

[0035] Optional: Reference Figure 2 The pushing assembly includes a second ball screw 501, which is fixed to the inner wall of the filter tank 1 and is arranged parallel to the first ball screw 5. The nut of the second ball screw 501 is fixedly connected to the first slide plate 6.

[0036] The ball screw has high load-bearing capacity and long service life. It can work in harsh environments and is perfectly adapted to the high-load and highly corrosive working conditions of sewage treatment.

[0037] Optional: Reference Figure 1 The transmission component 7 is connected between the horizontal moving component 400 and the pushing component, and the horizontal moving component 400 drives the pushing component.

[0038] The horizontal moving component 400 drives the pushing component through the transmission component 7, which reduces energy consumption. The precise synchronization of sewage intake, sewage discharge and material pushing actions effectively improves the sewage treatment efficiency and system stability.

[0039] Optional: Reference Figure 4 The transmission component 7 includes: a synchronous belt 700, a first ball screw 5 and a second ball screw 501 are connected through the synchronous belt 700, the first ball screw 5 and the second ball screw 501 have opposite rotation directions, and the first ball screw 5 includes a motor 502, and the motor 502 drives the nuts of the two ball screws to move toward each other at the same time.

[0040] The system is composed of a first ball screw 5 (right-handed) and a second ball screw 501 (left-handed) arranged in parallel, which are connected by a synchronous belt 700 and driven by the same motor 502. In the filtering stage, the motor 502 reverses to drive the nut of the first ball screw 5 to retract, so that the first slide plate 6 moves left to open the sewage inlet 101, and at the same time, the nut of the second ball screw 501 retreats to move the pusher component 4 upward, and the second slide plate 601 closes the sewage outlet 102 under the action of gravity, and the sewage is filtered normally. When mud needs to be discharged, the motor 502 rotates forward to drive the nut of the first ball screw 5 to move right, and the first slide plate 6 closes the sewage inlet 101. At the same time, the nut of the second ball screw 501 moves downward to push the pusher component 4 to push the sludge to the sewage outlet 102, and the second slide plate 601 is lifted and opened through the connecting rope 603. After the mud discharge is completed, the motor 502 reverses again, and the system is reset to restore the filtering state. This design realizes the precise synchronization of sewage intake, sewage discharge and material pushing actions, and has the advantages of high transmission efficiency, good sealing and high degree of automation, which effectively improves the sewage treatment efficiency and system stability.

[0041] Optional: Reference Figure 4 There are two groups of horizontal moving parts 400, pushing parts and transmission parts 7, which are symmetrically fixed on both sides of the inner wall of the filter tank 1.

[0042] The two groups of horizontal moving parts 400, the pushing parts and the transmission parts 7 are symmetrically distributed, and the double-sided synchronous driving makes the pushing plate 401 and the first slide plate 6 evenly stressed, eliminating the unilateral load.

[0043] Optional: Reference Figure 5 A brush 403 is fixed to the lower side of the push plate 401 .

[0044] The brush 403 can remove the fibrous impurities remaining on the plate surface, reduce the pore blockage rate of the filter plate 3, and each pushing action synchronously completes the self-cleaning of the filter plate 3, eliminates the hard friction between the push plate 401 and the filter plate 3, and reduces metal wear.

[0045] Optional: Reference Figure 5 An elastic component 404 is connected between the push plate 401 and the brush 403 .

[0046] The elastic component 404 enables the brush 403 to be in elastic contact with the filter plate 3. When the push plate 401 moves, the elastic component 404 undergoes periodic compressive deformation, driving the brush 403 to vibrate and insert into the pores of the filter plate 3 at a specific frequency, further reducing the pore blockage rate. The elastic contact pressure can adaptively compensate for the flatness error of the filter plate, and the vibration frequency of the bristles can effectively remove fibrous impurities. This elastic connection solution solves the problems of filter plate scratching and incomplete cleaning caused by traditional rigid connections and is applicable to the treatment of high-viscosity media such as oily sludge.

[0047] Optionally: Refer to Figure 5 , the elastic component 404 includes: a spring 405 and a buffer sheet 406. The first end of the spring 405 is elastically connected to the lower side of the push plate 401, the second end of the spring 405 is elastically connected to the fixing plate of the brush 403, and a plurality of buffer sheets 406 are connected between the spring 405, the push plate 401 and the brush 403.

[0048] Through the synergistic effect of the spring 405 and the buffer sheet 406, the spring 405 provides a stable pre-tightening force for the system to ensure that the brush 403 maintains an appropriate contact with the filter plate 3, while the buffer sheet 406 effectively absorbs the impacts and vibrations during operation. When encountering fibrous impurities, it will generate a small-amplitude vibration that helps with cleaning; when facing hard object impacts, it can achieve self-protection through elastic deformation, enabling the brush 403 to adapt to the surface condition of the filter plate 3, ensuring both the cleaning effect and extending the service life of the equipment.

[0049] The above are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A domestic sewage and wastewater treatment device, comprising a sewage treatment component (2), characterized in that: A filter tank (1) is provided upstream of the sewage treatment component (2); a sewage inlet (101) of the filter tank (1) is connected to a sewage pipe, and a water outlet (103) is connected to the sewage treatment component (2); a filter plate (3) and a material pushing component (4) are provided in the filter tank (1); The filter plate (3) is fixed obliquely inside the filter tank (1); The pushing component (4) comprises: a horizontal moving component (400), a pushing plate (401) and a telescopic rod (402); the horizontal moving component (400) is fixed to the inner wall of the filter tank (1); the first end of the pushing plate (401) is fixedly connected to the horizontal moving component (400); the second end of the pushing plate (401) is fixedly connected to the telescopic rod (402); and the pushing plate (401) abuts against the filter plate (3).

2. The domestic sewage wastewater treatment device according to claim 1, characterized in that: The filter tank (1) has a sewage outlet (102) on its side, a first slide plate (6) is slidably connected to the sewage inlet (101), a second slide plate (601) is slidably connected to the sewage outlet (102), a pulley (602) is fixed inside the filter tank (1), and a connecting rope (603) is passed around the first slide plate (6), the pulley (602) and the second slide plate (601) in sequence; The first slide plate (6) is connected to a pushing assembly, which drives the first slide plate (6) to slide horizontally to open or close the sewage inlet (101); the first slide plate (6) pulls the second slide plate (601) to move vertically via a connecting rope (603) to open or close the sewage outlet (102).

3. The domestic sewage wastewater treatment device according to claim 2, characterized in that: The horizontal moving component (400) comprises a first ball screw (5), the first ball screw (5) is fixed to the inner wall of the filter tank (1), and the nut of the first ball screw (5) is fixedly connected to the telescopic rod (402).

4. The domestic sewage wastewater treatment device according to claim 3, characterized in that: The pushing assembly comprises a second ball screw (501), which is fixed to the inner wall of the filter tank (1) and arranged parallel to the first ball screw (5), and the nut of the second ball screw (501) is fixedly connected to the first slide plate (6).

5. The domestic sewage wastewater treatment device according to claim 4, characterized in that: A transmission component (7) is connected between the horizontal moving component (400) and the pushing component, and the horizontal moving component (400) drives the pushing component through the transmission component (7).

6. The domestic sewage wastewater treatment device according to claim 5, characterized in that: The transmission component (7) comprises a synchronous belt (700), the first ball screw (5) and the second ball screw (501) are connected to each other via the synchronous belt (700), the first ball screw (5) and the second ball screw (501) have opposite rotation directions, and the first ball screw (5) comprises a motor (502), and the motor (502) simultaneously drives the nuts of the two ball screws to move towards each other.

7. The domestic sewage wastewater treatment device according to claim 6, characterized in that: The horizontal moving component (400), the pushing component and the transmission component (7) are in two groups and are symmetrically fixed on both sides of the inner wall of the filter tank (1).

8. The domestic sewage wastewater treatment device according to claim 1, characterized in that: A brush (403) is fixed to the lower side of the push plate (401).

9. The domestic sewage wastewater treatment device according to claim 8, characterized in that: An elastic component (404) is connected between the push plate (401) and the brush (403).

10. The domestic sewage wastewater treatment device according to claim 9, characterized in that: The elastic component (404) comprises: a spring (405) and a buffer sheet (406); the first end of the spring (405) is elastically connected to the lower side of the push plate (401); the second end of the spring (405) is elastically connected to the fixing plate of the brush (403); and a plurality of buffer sheets (406) are connected between the spring (405) and the push plate (401) and the brush (403).

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