Anti-blocking separation structure and method for integrated sewage treatment station applicable to rural areas

Abstract

The invention provides an integrated sewage treatment station anti-blocking separation structure and method suitable for rural areas, and belongs to the technical field of sewage treatment.The integrated sewage treatment station anti-blocking separation structure comprises a first-stage screening structure, a second-stage screening structure, a third-stage screening structure and a fourth-stage screening structure, the first-stage screening structure is a strip-shaped grid; the secondary screening structure is used for secondarily filtering the sewage, the secondary screening structure comprises a filter screen arranged below the strip-shaped grid, and the filter screen is provided with a protective frame; solid impurities discharged into the regulating tank are effectively reduced, the primary screening structure can filter out large-diameter impurities in domestic sewage, the secondary screening structure can filter out fine impurities in the domestic sewage, and most solid impurities in the domestic sewage can be filtered out after the domestic sewage is filtered through the primary screening structure and the secondary screening structure. Therefore, the cleaning frequency of the adjusting tank can be reduced, and the workload of maintenance personnel is indirectly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an anti-blocking separation structure and method for an integrated sewage treatment station suitable for rural areas. Background Art

[0002] Compared with urban sewage treatment, rural sewage treatment in China has certain similarities, but rural water pollution has its own distinct characteristics due to the unique customs and lifestyles in rural areas. Therefore, the selection of rural domestic sewage treatment technology should be based on the current situation, natural characteristics, customs and social and economic conditions of rural areas, and adopt a diversified sewage treatment model with low investment, high pollutant removal effect, and convenient management and operation, instead of blindly copying large-scale urban sewage treatment processes.

[0003] The main way to treat urban domestic sewage is to collect it through the municipal pipeline network and then transport it to the sewage treatment plant for centralized treatment. If a traditional centralized sewage treatment system is established in rural areas, it requires huge capital investment and long-term planning. The on-site treatment of integrated sewage treatment equipment can not only effectively save a lot of pipeline laying, but also has low investment per ton of water and very little operating costs. At the same time, it can maintain the relative ecological balance of the surrounding environment of rural areas. It is an economical and effective treatment method.

[0004] Compared with urban sewage, rural sewage has the characteristics of small amount of sewage, large fluctuation of water quality, and high content of organic matter. Most rural domestic sewage has a high daily variation coefficient. The discharge of domestic sewage is usually more in the morning, noon and evening. After the evening, the discharge volume gradually decreases, and even stops at night. The pollutants in rural sewage are complex. The main pollutants include organic matter such as carbohydrates, proteins, amino acids, and fats, and generally do not contain toxic substances. The water quality has the characteristics of high N and P content, good biodegradability, and low content of toxic and harmful substances such as difficult-to-degrade organic matter and heavy metals.

[0005] Although integrated sewage treatment equipment has the advantages of small footprint, low investment and operating costs, its small size also leads to some limitations of current integrated sewage treatment equipment.

[0006] Rural integrated sewage treatment equipment lacks a relatively complete filtration system. At present, in rural areas or towns, domestic sewage is initially filtered to remove large-diameter solid impurities, then flows through the sewage pipe to the integrated sewage treatment equipment, and then filtered through artificial screens and discharged into the regulating tank.

[0007] If the aperture of the artificial screen is too large or too small, it will affect the normal operation of the integrated sewage treatment equipment. When the aperture of the artificial screen is too large, it can effectively reduce the clogging of the artificial screen, but it is easy to cause some large-diameter solid impurities to be discharged into the regulating tank, which may also affect the normal operation of the lift pump in the future. Although the impact of large-diameter solid impurities on the lift pump can be reduced by appropriately raising the position of the lift pump, due to the large aperture of the artificial screen, the accumulation speed of large-diameter solid impurities will also be accelerated, shortening the cleaning cycle, and the environment in the regulating tank is harsh, which is easy to increase the labor intensity of the staff.

[0008] Rural domestic sewage is often accompanied by the skin and leaves of fruits and vegetables, and some sewage channels are set up in the open air. These reasons lead to a large variety of impurities in rural domestic sewage. If the aperture of the artificial screen is reduced, although it can reduce the discharge of large-diameter impurities into the regulating tank, the artificial screen is also more prone to blockage and even sewage overflow, so staff are also required to check and clean it frequently.

[0009] However, the current situation is that the rural population density is small and the residents live in a relatively scattered manner. The villages and residents in the villages are relatively scattered, which leads to the scattered distribution of integrated sewage treatment equipment, and the staff need to spend a lot of time on the way back and forth. The artificial screens currently used for solid-liquid separation cannot meet the current needs. Whether it is to shorten the cleaning and maintenance of the regulating pool or to increase the cleaning frequency of the artificial screens, it will increase the workload of the staff and increase the operation and maintenance costs. Summary of the invention

[0010] The present invention provides an anti-blocking separation structure and method for an integrated sewage treatment station applicable to rural areas, so as to solve the technical problem of frequent maintenance and overhaul of integrated sewage treatment equipment in the prior art.

[0011] In order to solve the above problems, the anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas provided by the present invention adopts the following technical scheme: comprising a primary screening structure, which is installed at the water inlet of the regulating tank, and the primary screening structure is used for preliminary filtering of sewage; The primary screening structure is a strip grid; The secondary screening structure is used for secondary filtration of sewage. The secondary screening structure includes a filter screen arranged below the strip grid, the filter screen is provided with a protective frame, and an opening is provided on the right side of the protective frame for the discharge of solid impurities; the right side of the filter screen is hinged to the hinge shaft, and the front and rear ends of the hinge shaft are fixedly connected to the side wall of the regulating tank; The anti-blocking cleaning structure is used to clean the solid impurities on the strip grille and the filter screen. The anti-blocking cleaning structure includes connecting rods located at the front and rear sides of the secondary screening structure and a translation structure used to drive the two connecting rods to slide in the left and right directions. The connecting rods are arranged in the vertical direction. Rake teeth for cleaning the strip grille are arranged above the two connecting rods. Wedge blocks for lifting the protective frame to tilt the filter screen are fixedly connected below the two connecting rods. A solid impurity temporary storage structure is arranged on the right side of the primary screening structure and the secondary screening structure, and is used to temporarily store solid impurities discharged from the strip grid and the filter screen; The backwashing mechanism is used to wash the bottom of the filter screen to clean the filter screen. The backwashing mechanism includes a spray head fixedly installed on the left side wall of the regulating tank and a flushing pump installed in the regulating tank. The flushing pump is connected to the spray head through a pipeline.

[0012] As a further improvement, a wavy structure extending in the left-right direction is provided at the bottom of the protective frame, so that the filter screen vibrates during the sliding process of the wedge block, thereby separating the filter screen from solid impurities so that the backwashing mechanism can flush the filter screen.

[0013] As a further improvement, a guide rail for guiding the wedge block is fixedly mounted on the side wall of the regulating tank.

[0014] As a further improvement, the top of the wedge block is arc-shaped so as to cooperate with the wave-shaped structure.

[0015] As a further improvement, a roller is provided on the top of the wedge block to reduce the friction between the wedge block and the wave-shaped structure.

[0016] As a further improvement, the solid impurity temporary storage structure includes a first impurity frame and a second impurity frame arranged in the up and down directions, the first impurity frame is fixedly connected to the second impurity frame, the first impurity frame is used to receive fixed impurities discharged by the strip grille, and the second impurity frame is used to receive fixed impurities discharged by the filter.

[0017] As a further improvement, a load-bearing frame for supporting the solid impurity temporary storage structure is further provided in the regulating tank, and the load-bearing frame is fixedly connected to the side wall of the regulating tank.

[0018] As a further improvement, a handle for holding is fixedly mounted on the top of the first impurity frame.

[0019] As a further improvement, the translation structure includes a driving sprocket and a driven sprocket rotatably mounted on the side wall of the regulating tank, a transmission chain is wound around the driving sprocket and the driven sprocket, the transmission chain is fixedly connected to the connecting rod, and a motor is also provided next to the driving sprocket for driving the driving sprocket to rotate.

[0020] The present invention also provides an anti-blocking separation method for an integrated sewage treatment station applicable to rural areas, which adopts the anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas, and comprises the following steps: S1, cleaning the strip grid, the translation structure drives the connecting rod to move, and then drives the rake teeth to move from left to right, pushing the solid impurities on the strip grid into the first impurity frame; S2, tilting the filter screen. S2 is performed synchronously with S1. During the movement of the connecting rod, the wedge-shaped block at the bottom of the protective frame is driven to move from left to right, so that the filter screen is gradually tilted to clean the solid impurities on the filter screen; S3, cleaning the filter screen. When the filter screen is tilted, the flushing pump starts to extract water from the regulating tank and flushes the filter screen from the bottom of the filter screen through the spray head, so that the solid impurities on the surface of the filter screen are discharged into the second impurity frame; S4, reset. After the filter screen is cleaned, the translation structure drives the connecting rod to move to the left to complete the reset. S5, cleaning solid impurities. The staff regularly removes the solid impurity temporary storage structure. After cleaning the solid impurities in the solid impurity temporary storage structure, the solid impurity temporary storage structure is reset.

[0021] The beneficial effects of the above technical solution of the present invention are as follows: 1. It effectively reduces the solid impurities discharged into the regulating tank. The primary screening structure can filter out large-diameter impurities in domestic sewage, and the secondary screening structure can filter out fine impurities in domestic sewage. After filtering through the primary and secondary screening structures, most of the solid impurities in domestic sewage can be filtered out, which can reduce the cleaning frequency of the regulating tank and indirectly reduce the workload of maintenance personnel.

[0022] 2. Although setting a filter with a smaller aperture can reduce the amount of solid impurities entering the regulating tank, it will also cause the filter to be easily blocked. The present invention sets an anti-blocking cleaning structure, regularly backwashes the strip grille and the filter, greatly reduces the blockage of the strip grille and the filter, reduces the failure rate of the equipment, and reduces the workload of the staff.

[0023] 3. The bottom of the protective frame around the filter is equipped with a wavy structure. When the wedge block slides, the filter will vibrate, which is conducive to the separation of solid impurities from the filter, thereby improving the backwashing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1This is a structural schematic diagram of the anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas of the present invention; Figure 2 It is a partial structural schematic diagram of the anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas of the present invention; Figure 3 It is a schematic diagram of the main structure of the anti-blocking and cleaning structure of the anti-blocking and separation structure of the integrated sewage treatment station applicable to rural areas of the present invention; Figure 4 It is a left-side structural schematic diagram of the anti-blocking and cleaning structure of the anti-blocking and separation structure of the integrated sewage treatment station applicable to rural areas of the present invention; Figure 5 It is a structural schematic diagram of the strip grille of the anti-blocking separation structure of the integrated sewage treatment station in rural areas applicable to the present invention.

[0025] Description of reference numerals: 100, regulating tank; 200, backwashing mechanism; 210, flushing pump; 220, sprinkler head; 310, primary screening structure; 311, strip grille; 320, secondary screening structure; 321, protective frame; 322, filter; 323, wavy structure; 330, anti-blocking cleaning structure; 331, rake teeth; 332, connecting rod; 333, translation structure; 334, wedge block; 335, roller; 336, guide rail; 400, solid impurity temporary storage structure; 410, protective cover; 420, handle; 430, first impurity frame; 440, second impurity frame; 450, load-bearing frame; 500, lifting pump; 600, sludge tank. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] In the existing technology, rural integrated sewage treatment equipment has some limitations and lacks a relatively complete filtration system. Generally, domestic sewage is initially filtered to remove large-diameter solid impurities, then flows through the sewage pipe to the integrated sewage treatment equipment, and then filtered through an artificial grille before being discharged into the regulating tank.

[0028] At present, in order to reduce the risk of artificial grille blockage, the aperture (or interval) of the artificial grille is generally appropriately increased. In addition, the organic matter content in rural domestic sewage is high, mostly some vegetable leaves and fruit peels, etc., even if it enters the regulating tank, it will gradually rot and will not have a significant impact on the lifting pump. However, rural domestic sewage also contains mud, sand, various seeds and other solid impurities that are not easy to decompose. In addition, some rural infrastructure is not perfect, and some sewage sections are set up in the open air, resulting in the solid waste that eventually flows into the regulating tank. There may be gravel, small branches and other solid impurities. These problems may affect the normal operation of the lifting pump, and shorten the cleaning cycle of the regulating tank, increase the labor intensity of the staff, and the smell in the regulating tank is bad, and the working environment of the staff is poor.

[0029] In view of the above problems, the present invention sets a secondary screening structure below the primary screening structure to reduce the solid impurities entering the regulating tank, thereby solving the problem of shortening the cleaning cycle of the regulating tank. At the same time, in order to reduce the risk of blockage, the present invention also sets an anti-blocking cleaning structure to reduce the blockage of the primary screening structure and the secondary screening structure and reduce the failure rate.

[0030] Firstly, the present invention adjusts the artificial grille and changes it into a strip grille to provide a clearance for the rake teeth, so that the rake teeth can slide in the left and right directions and push away the solid impurities in the strip grille.

[0031] Secondly, the anti-blocking cleaning structure was improved. The upper end of the connecting rod was connected to the rake teeth, and the lower end was connected to the wedge block. In this way, when the rake teeth moved to clean the strip grid, the wedge block moved under the protective frame, causing the filter to gradually tilt, forming an inclined state with the left side higher and the right side lower. At the same time, due to the setting of the wavy structure, when the wedge block slides, the filter will vibrate, causing some solid impurities to slide to the right.

[0032] Since the viscosity of solid impurities in rural domestic sewage is relatively large, it is difficult to clean most of the solid impurities by vibration alone. Therefore, the filter is finally flushed from the bottom through a backwashing mechanism to wash away most of the solid impurities on the filter.

[0033] Rural domestic sewage and most of the solid impurities in sewage have the characteristic of high viscosity. Although the present invention cannot remove all the solid impurities on the primary screening structure and the secondary screening structure, it has a relatively simple structure and low energy consumption. The water used for backwashing directly uses the water in the regulating tank, which will not cause waste. Therefore, it can be started frequently (for example, it can be started once at around 10 o'clock in the morning, once at around 3 o'clock in the afternoon, and once again at night or early in the morning) to keep the strip grille and the filter screen from being blocked for a long time.

[0034] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0035] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0036] Embodiment 1 of the anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas provided by the present invention: like Figure 1-5 As shown, it includes a primary screening structure 310 , a secondary screening structure 320 , an anti-clogging cleaning structure 330 for cleaning the primary screening structure 310 and the secondary screening structure 320 to prevent them from being blocked, and a backwashing mechanism 200 for flushing the secondary screening structure 320 .

[0037] like Figure 1 As shown, the primary screening structure 310 is installed at the water inlet of the regulating tank 100. The regulating tank 100 is used to regulate the water volume. Since the discharge volume of rural domestic sewage fluctuates greatly (the discharge volume of domestic sewage is usually large in the morning, noon and evening, and the discharge volume gradually decreases after the evening, and even stops at night), the regulating tank 100 is provided to facilitate the collection of domestic sewage for unified treatment. In addition, a sludge tank 600 is provided next to the regulating tank 100, and an overflow port is provided between the sludge tank 600 and the regulating tank 100. A lifting pump 500 is provided in the regulating tank 100, and the lifting pump 500 is used to pump the domestic sewage in the regulating tank 100 to the anaerobic tank.

[0038] The primary screening structure 310 is used for preliminary filtering of sewage. The primary screening structure 310 is a strip grid 311, such as Figure 5 As shown, the strip grille 311 includes a plurality of L-shaped plates spaced apart along the front-to-back direction, and the rectangular intervals between the L-shaped plates allow the rake teeth 331 to move in the direction so as to clean the solid impurities on the strip grille 311; the L-shaped plates and the partitions on the front and rear sides make the strip grille 311 form a three-sided surrounding structure, which facilitates the discharge of solid impurities from the strip grille 311 into the first impurity frame 430.

[0039] like Figure 3 and Figure 4 As shown, the secondary screening structure 320 is used for secondary filtration of sewage. The secondary screening structure 320 includes a filter screen 322 arranged below the strip grille 311. The filter screen 322 is provided with a protective frame 321. The right side of the protective frame 321 is provided with an opening for the discharge of solid impurities. The right side of the filter screen 322 is hinged to the hinge shaft, and the front and rear ends of the hinge shaft are fixedly connected to the side walls of the regulating tank 100, so that the filter screen 322 can rotate along the hinge shaft.

[0040] like Figure 3 and Figure 4 As shown, the anti-blocking cleaning structure 330 is used to clean the solid impurities on the strip grid 311 and the filter 322. The anti-blocking cleaning structure 330 includes a connecting rod 332 located on the front and rear sides of the secondary screening structure 320 and a translation structure 333 for driving the two connecting rods 332 to slide in the left and right directions. In this embodiment, the translation structure 333 includes a driving sprocket and a driven sprocket rotatably assembled on the side wall of the regulating tank 100. A transmission chain is arranged between the driving sprocket and the driven sprocket. The transmission chain is fixedly connected to the connecting rod 332. A motor (not shown in the figure) is also arranged beside the driving sprocket to drive the driving sprocket to rotate. In this way, when the motor drives the driving sprocket to rotate, the connecting rod 332 is driven to slide in the left and right directions. In this embodiment, the outer wall of the regulating tank 100 where the motor is set can prevent the motor from operating in a humid environment for a long time and reduce the failure rate of the motor; after the motor is set on the outer wall of the regulating tank 100, the driving sprocket can be driven to rotate by extending the length of the transmission shaft or using a chain.

[0041] The connecting rod 332 is arranged in the vertical direction. In order to improve the stability of the translation of the connecting rod 332, a guide rod arranged in the left and right direction can also be arranged, and the connecting rod 332 is slidably connected to the guide rod; the rake teeth 331 for cleaning the strip grille 311 are arranged above the two connecting rods 332, and the wedge blocks 334 for lifting the protective frame 321 to tilt the filter 322 are fixedly connected below the two connecting rods 332, and the wedge blocks 334 are located at the bottom of the protective frame 321; the main function of the wedge blocks 334 is to adjust the inclination angle of the filter 322. After the filter 322 is tilted, it is convenient to flush the solid impurities on the filter 322 into the second impurity frame 440. In addition, the wedge blocks 334 can also play a supporting role to support the left side of the filter 322.

[0042] A guide rail 336 for guiding the wedge block 334 is also fixedly installed on the side wall of the regulating tank 100 , which can guide the wedge block 334 .

[0043] In this embodiment, the top of the wedge block 334 is arc-shaped to reduce wear, and the bottom of the protective frame 321 is provided with a wavy structure 323 extending in the left and right direction, so that when the wedge block 334 slides left and right, the filter screen 322 is easily vibrated due to the uneven structure of the bottom of the protective frame 321, which is conducive to the separation of the filter screen 322 from solid impurities. For example, when small gravel is stuck in the mesh of the filter screen 322, the small gravel may pop out or loosen during the vibration of the filter screen 322, which is conducive to improving the flushing effect.

[0044] In other embodiments, the wave-shaped structure 323 may also be changed to a rack-shaped structure or other structures capable of generating vibration.

[0045] The solid impurity temporary storage structure 400 is arranged on the right side of the primary screening structure 310 and the secondary screening structure 320. The solid impurity temporary storage structure 400 is used to temporarily store the solid impurities discharged from the strip grid 311 and the filter screen 322; The solid impurity temporary storage structure 400 includes a first impurity frame 430 and a second impurity frame 440 arranged in the up-down direction. The first impurity frame 430 and the second impurity frame 440 are provided with drainage holes at the bottom, and the bottom surfaces of the first impurity frame 430 and the second impurity frame 440 are inclined. The first impurity frame 430 is fixedly connected with the second impurity frame 440. The first impurity frame 430 is used to receive the fixed impurities discharged from the strip grid 311, and the second impurity frame 440 is used to receive the fixed impurities discharged from the filter screen 322. A handle 420 for holding is fixedly installed on the top of the first impurity frame 430 to facilitate the removal of the solid impurity temporary storage structure 400. In addition, a protective cover 410 is provided above the handle 420.

[0046] A load-bearing frame 450 for supporting the solid impurity temporary storage structure 400 is also provided in the regulating tank 100 , and the load-bearing frame 450 is fixedly connected to the side wall of the regulating tank 100 .

[0047] like Figure 1 and Figure 2 As shown, the backwashing mechanism 200 is used to wash the bottom of the filter 322 to clean the filter 322. Due to the characteristics of solid impurities in domestic sewage (high viscosity), whether it is the above-mentioned inclined filter 322, relying on gravity to make some solid impurities fall into the second impurity frame 440, or by vibration, it is difficult to separate the solid impurities with high viscosity from the filter 322, so the backwashing mechanism 200 is required for washing. The backwashing mechanism 200 includes a spray head 220 fixedly mounted on the left side wall of the regulating tank 100 and a flushing pump 210 installed in the regulating tank 100, and the flushing pump 210 is connected to the spray head 220 through a pipeline. The flushing water comes directly from the regulating tank 100, and the flushing water will also flow into the regulating tank 100, so it can be flushed for a long time or frequently. The flushing pump 210 is generally set at a height of about 1 meter from the bottom of the regulating tank 100, which not only avoids the bottom sediment from affecting the flushing pump 210, reduces the failure rate of the flushing pump 210, but also does not cause maintenance difficulties due to the excessive position of the flushing pump 210.

[0048] This embodiment also provides a method for preventing blocking and separating an integrated sewage treatment station applicable to rural areas, which adopts the above-mentioned anti-blocking and separating structure of the integrated sewage treatment station applicable to rural areas, and includes the following steps: S1, cleaning the strip grid 311, the translation structure 333 drives the connecting rod 332 to move, thereby driving the rake teeth 331 to move from left to right, and pushing the solid impurities on the strip grid 311 into the first impurity frame 430; S2, tilting the filter screen 322. S2 is performed synchronously with S1. During the movement of the connecting rod 332, the wedge block 334 at the bottom of the protective frame 321 is driven to move from left to right, so that the filter screen 322 is gradually tilted, so as to clean the solid impurities on the filter screen 322. S3, cleaning the filter screen 322. When the filter screen 322 is tilted, the flushing pump 210 is started to extract water from the regulating tank 100, and the filter screen 322 is flushed from the bottom of the filter screen 322 through the spray head 220, so that the solid impurities on the upper surface of the filter screen 322 are discharged into the second impurity frame 440; S4, reset, after the filter screen 322 is cleaned, the translation structure 333 drives the connecting rod 332 to move to the left to complete the reset; S5, cleaning solid impurities. The staff regularly removes the solid impurity temporary storage structure 400. After cleaning the solid impurities in the solid impurity temporary storage structure 400, the solid impurity temporary storage structure 400 is reset.

[0049] Embodiment 2 of the anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas provided by the present invention: The main difference between it and Example 1 is: In Embodiment 1, the top of the wedge block 334 is arc-shaped to reduce wear.

[0050] In this embodiment, a roller 335 is provided on the top of the wedge block 334 to reduce the friction between the wedge block 334 and the wave-shaped structure 323. The roller 335 converts the sliding friction into rolling friction, thereby reducing wear.

[0051] Although this specification has shown and described a plurality of embodiments of the present invention, it is obvious to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will think of many changes, modifications and alternatives without departing from the thought and spirit of the present invention. It should be understood that in the process of practicing the present invention, various alternatives to the embodiments of the present invention described herein may be adopted. The attached claims are intended to define the scope of protection of the present invention, and therefore cover the modular composition, equivalent or alternatives within the scope of protection of these claims.

Claims

1. An anti-blocking separation structure for an integrated sewage treatment station suitable for rural areas, comprising: A primary screening structure (310) is installed at the water inlet of the regulating tank (100), and the primary screening structure (310) is used for preliminary filtering of sewage; Characterized in that the primary screening structure (310) is a strip grid (311); A secondary screening structure (320), the secondary screening structure (320) is used for secondary filtering of sewage, the secondary screening structure (320) comprises a filter screen (322) arranged below the strip grid (311), the filter screen (322) is provided with a protective frame (321), and an opening is provided on the right side of the protective frame (321) for discharging solid impurities; the right side of the filter screen (322) is hinged to a hinge shaft, and the front and rear ends of the hinge shaft are fixedly connected to the side wall of the regulating tank (100); An anti-blocking cleaning structure (330) for cleaning solid impurities on the strip grille (311) and the filter screen (322), the anti-blocking cleaning structure (330) comprising connecting rods (332) located at the front and rear sides of the secondary screening structure (320) and a translation structure (333) for driving the two connecting rods (332) to slide in the left and right directions, the connecting rods (332) being arranged in the vertical direction, a rake tooth (331) for cleaning the strip grille (311) being arranged above the two connecting rods (332), and a wedge block (334) for lifting the protective frame (321) to tilt the filter screen (322) being fixedly connected below the two connecting rods (332); A solid impurity temporary storage structure (400) is arranged on the right side of the primary screening structure (310) and the secondary screening structure (320), and the solid impurity temporary storage structure (400) is used to temporarily store solid impurities discharged from the strip grid (311) and the filter screen (322); A backwashing mechanism (200) for flushing the bottom of the filter screen (322) to clean the filter screen (322), the backwashing mechanism (200) comprising a spray head (220) fixedly mounted on the left side wall of the regulating tank (100) and a flushing pump (210) mounted in the regulating tank (100), the flushing pump (210) being connected to the spray head (220) via a pipeline; The bottom of the protective frame (321) is provided with a wave-shaped structure (323) extending in the left-right direction, so that the filter screen (322) vibrates during the sliding process of the wedge-shaped block (334), thereby separating the filter screen (322) from solid impurities, so that the backwashing mechanism (200) can wash the filter screen (322).

2. The anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas according to claim 1 is characterized by: A guide rail (336) for guiding the wedge block (334) is also fixedly mounted on the side wall of the regulating tank (100).

3. The anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas according to claim 2 is characterized by: The top of the wedge-shaped block (334) is arc-shaped so as to cooperate with the wave-shaped structure (323).

4. The anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas according to claim 2 is characterized by: A roller (335) is provided on the top of the wedge-shaped block (334) to reduce friction between the wedge-shaped block (334) and the wave-shaped structure (323).

5. The anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas according to claim 1 is characterized by: The solid impurity temporary storage structure (400) comprises a first impurity frame (430) and a second impurity frame (440) arranged in the up-down direction, the first impurity frame (430) being fixedly connected to the second impurity frame (440), the first impurity frame (430) being used to receive fixed impurities discharged from the strip grid (311), and the second impurity frame (440) being used to receive fixed impurities discharged from the filter screen (322).

6. The anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas according to claim 5 is characterized by: A load-bearing frame (450) for supporting the solid impurity temporary storage structure (400) is also provided in the regulating tank (100); the load-bearing frame (450) is fixedly connected to the side wall of the regulating tank (100).

7. The anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas according to claim 6 is characterized by: A handle (420) for holding is fixedly mounted on the top of the first impurity frame (430).

8. The anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas according to claim 1 is characterized by: The translation structure (333) comprises a driving sprocket and a driven sprocket rotatably mounted on the side wall of the regulating tank (100), a transmission chain is arranged between the driving sprocket and the driven sprocket, the transmission chain is fixedly connected to the connecting rod (332), and a motor for driving the driving sprocket to rotate is also arranged beside the driving sprocket.

9. A method for preventing blocking and separating an integrated sewage treatment station applicable to rural areas, using the anti-blocking and separating structure for an integrated sewage treatment station applicable to rural areas as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1, cleaning the strip-shaped grille (311), the translation structure (333) drives the connecting rod (332) to move, thereby driving the rake teeth (331) to move from left to right, and pushing the solid impurities on the strip-shaped grille (311) into the first impurity frame (430); S2, tilting the filter screen (322), S2 is performed synchronously with S1, and during the movement of the connecting rod (332), the wedge-shaped block (334) at the bottom of the protective frame (321) is driven to move from left to right, so that the filter screen (322) is gradually tilted, so as to clean the solid impurities on the filter screen (322); S3, cleaning the filter screen (322). When the filter screen (322) is tilted, the flushing pump (210) is started to extract water from the regulating tank (100), and the filter screen (322) is flushed from the bottom of the filter screen (322) through the spray head (220), so that the solid impurities on the upper surface of the filter screen (322) are discharged into the second impurity frame (440); S4, resetting. After the filter screen (322) is cleaned, the translation structure (333) drives the connecting rod (332) to move to the left, completing the resetting. S5, cleaning solid impurities, the staff regularly removes the solid impurity temporary storage structure (400), and after cleaning the solid impurities in the solid impurity temporary storage structure (400), the solid impurity temporary storage structure (400) is reset.

Images