Integrated sewage treatment station anti-blocking separation structure and method suitable for rural areas

Abstract

The application provides a rural integrated sewage treatment station anti-blocking separation structure and method, and belongs to the technical field of sewage treatment, which comprises a primary screening structure installed at the water inlet of a regulating tank, and the primary screening structure is used for preliminarily filtering sewage; the primary screening structure is a strip-shaped grid; a secondary screening structure, the secondary screening structure is used for secondarily filtering sewage, and the secondary screening structure comprises a filter screen arranged below the strip-shaped grid, and the filter screen is provided with a protective frame; the application effectively reduces solid impurities discharged into the regulating tank, the primary screening structure can filter out large-diameter impurities in domestic sewage, the secondary screening structure can filter out small impurities in domestic sewage, and after being filtered by the primary screening structure and the secondary screening structure, most of the solid impurities in domestic sewage can be filtered out, so that the cleaning frequency of the regulating tank can be reduced, and the workload of maintenance personnel is indirectly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, and in particular to a blocking prevention separation structure and method for a rural integrated sewage treatment station. BACKGROUND

[0002] Compared with urban sewage, rural sewage treatment in China has certain similarities, but due to unique customs and habits, lifestyle, etc. in rural areas, rural water pollution has its own distinctive characteristics. Therefore, the selection of rural domestic sewage treatment technology should be based on the current situation, natural characteristics, customs and habits, and social and economic conditions in rural areas, and a diversified sewage treatment mode with low investment, high pollutant removal effect, and convenient management and operation should be adopted according to local conditions. The large-scale urban sewage treatment process cannot be copied one-sidedly.

[0003] The main way of urban domestic sewage treatment is to collect it through the municipal pipe 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, huge capital investment and long-term planning are required. Integrated sewage treatment equipment can treat sewage on site, which not only effectively saves a large amount of pipeline laying and has low investment per ton of water, but also has very low operating costs, while maintaining the relative ecological balance of the surrounding environment in rural areas. It is an economical and effective treatment method.

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

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

[0006] The rural integrated sewage treatment equipment lacks a complete filtration system. At present, in rural areas or towns, after the domestic sewage is preliminarily filtered to remove large-diameter solid impurities, it flows to the integrated sewage treatment equipment through the sewage pipe, and then is filtered by the manual grille and discharged into the regulation tank.

[0007] The aperture of the artificial grid is too large or too small, which affects the normal operation of the integrated sewage treatment equipment. When the aperture of the artificial grid is too large, the clogging of the artificial grid can be effectively reduced, but some solid impurities with large diameters are easily discharged into the adjusting tank, which may affect the normal operation of the subsequent lifting pump. At present, although the position of the lifting pump can be appropriately raised to reduce the influence of the solid impurities with large diameters on the lifting pump, due to the large aperture of the artificial grid, the accumulation speed of the solid impurities with large diameters is accelerated, the cleaning cycle is shortened, and the working intensity of the workers is increased due to the poor environment in the adjusting tank.

[0008] Rural domestic sewage is often accompanied by the skin of melons, fruits and vegetables, and leaves, and part of the sewage channel is set outdoors. These reasons result in that the rural domestic sewage has many types of impurities. If the aperture of the artificial grid is reduced, although the solid impurities with large diameters can be reduced to be discharged into the adjusting tank, correspondingly, the artificial grid is more prone to be clogged, and even sewage overflow occurs, so the workers need to frequently check and clean.

[0009] However, at present, the population density of rural residents is small, and the residents are relatively dispersed. The villages are relatively dispersed, or the residents in the villages are relatively dispersed, which results in that the integrated sewage treatment equipment is relatively dispersed, and the workers need to spend a lot of time on the way back and forth. At present, the artificial grid for solid-liquid separation cannot meet the current demand. Whether the cleaning and maintenance of the adjusting tank are shortened or the cleaning frequency of the artificial grid is increased, the workload of the workers is increased, and the operation and maintenance cost is increased. SUMMARY

[0010] The application provides an integrated sewage treatment station anti-blocking separation structure and method suitable for rural areas to solve the technical problem of frequent maintenance and repair of the integrated sewage treatment equipment in the prior art.

[0011] To solve the above problems, the integrated sewage treatment station anti-blocking separation structure suitable for rural areas provided by the application adopts the following technical scheme: a primary screening structure is installed at the water inlet of the adjusting tank, and the primary screening structure is used for preliminary filtration of sewage;

[0012] The primary screening structure is a strip-shaped grid;

[0013] A secondary screening structure is used for secondary filtration of sewage. The secondary screening structure includes a filter screen arranged below the strip-shaped grid. The filter screen is provided with a protective frame. An opening is arranged on the right side of the protective frame to discharge solid impurities. The right side of the filter screen 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 adjusting tank.

[0014] The anti-blocking cleaning structure is used for cleaning solid impurities on the strip-shaped grid and the filter screen, and comprises connecting rods arranged on both sides of the secondary screening structure, a translation structure used for driving the connecting rods to slide in the left-right direction, and rake teeth arranged between the connecting rods in the vertical direction and used for cleaning the strip-shaped grid.

[0015] The solid impurity temporary storage structure is arranged on the right side of the primary screening structure and the secondary screening structure, and is used for temporarily storing the solid impurities discharged from the strip-shaped grid and the filter screen.

[0016] The backwashing mechanism is used for washing the bottom of the filter screen to clean the filter screen, and comprises a spray head fixedly installed on the left side wall of the adjusting pool and a washing pump installed in the adjusting pool and connected with the spray head through a pipeline.

[0017] As a further improvement, the bottom of the protective frame is provided with a wave-shaped structure extending in the left-right direction, so that the filter screen vibrates during the sliding of the wedge-shaped block, and the filter screen is separated from the solid impurities, so that the filter screen is washed by the backwashing mechanism.

[0018] As a further improvement, a guide rail for guiding the wedge-shaped block is further fixedly installed on the side wall of the adjusting pool.

[0019] As a further improvement, the top of the wedge-shaped block is arc-shaped to cooperate with the wave-shaped structure.

[0020] As a further improvement, the top of the wedge-shaped block is provided with a roller to reduce the friction between the wedge-shaped block and the wave-shaped structure.

[0021] As a further improvement, the solid impurity temporary storage structure comprises a first impurity frame and a second impurity frame arranged in the up-down direction, and the first impurity frame is fixedly connected with the second impurity frame, the first impurity frame is used for receiving the solid impurities discharged from the strip-shaped grid, and the second impurity frame is used for receiving the solid impurities discharged from the filter screen.

[0022] As a further improvement, the adjusting pool is further provided with a bearing frame used for supporting the solid impurity temporary storage structure, and the bearing frame is fixedly connected with the side wall of the adjusting pool.

[0023] As a further improvement, a handle is fixedly installed on the top of the first impurity frame.

[0024] As a further improvement, the translation structure comprises a driving sprocket and a driven sprocket rotatably assembled on the side wall of the adjusting pool, a transmission chain is arranged around the driving sprocket and the driven sprocket, the transmission chain is fixedly connected with the connecting rods, and a motor used for driving the driving sprocket to rotate is further arranged beside the driving sprocket.

[0025] The application also provides a rural integrated sewage treatment station anti-blocking separation method, which adopts the above-mentioned rural integrated sewage treatment station anti-blocking separation structure and comprises the following steps.

[0026] S1, cleaning the strip-shaped grid, moving the translation structure driving connecting rod, and then driving the rake teeth to move from left to right, so as to push the solid impurities on the strip-shaped grid into the first impurity frame;

[0027] S2, tilting the filter screen, S2 is synchronous with S1, the connecting rod moves in the process, driving the wedge-shaped block at the bottom of the protective frame to move from left to right, so that the filter screen is gradually tilted, so as to clean the solid impurities on the filter screen;

[0028] S3, cleaning the filter screen, when the filter screen is tilted, the flushing pump is started to pump the water in the adjusting pool, and the filter screen is flushed 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;

[0029] S4, resetting, after the filter screen is cleaned, the translation structure driving connecting rod moves to the left side to complete the resetting;

[0030] S5, cleaning the solid impurities, the staff removes the solid impurities temporary storage structure regularly, and after the solid impurities temporary storage structure is cleaned, the solid impurities temporary storage structure is reset.

[0031] The beneficial effects of the above technical scheme of the application are as follows:

[0032] 1. The solid impurities discharged into the adjusting pool are effectively reduced, the first screening structure can filter out the large-diameter impurities in domestic sewage, the second screening structure can filter out the small impurities in domestic sewage, and after being filtered by the first screening structure and the second screening structure, most of the solid impurities in domestic sewage can be filtered out, so that the cleaning frequency of the adjusting pool is reduced, and the workload of the maintenance personnel is indirectly reduced.

[0033] 2. Although the filter screen with smaller pore size can reduce the solid impurities entering the adjusting pool, the filter screen is prone to be blocked correspondingly. The anti-blocking cleaning structure is arranged in the application, the strip-shaped grid is cleaned regularly, and the filter screen is back-flushed, so that the blockage of the strip-shaped grid and the filter screen is greatly reduced, the failure rate of the equipment is reduced, and the workload of the staff is reduced.

[0034] 3. The bottom of the protective frame around the filter screen is provided with a wave-shaped structure, when the wedge-shaped block slides, the filter screen will vibrate, which is beneficial to the separation of the solid impurities and the filter screen, so as to improve the back-flushing effect. BRIEF DESCRIPTION OF DRAWINGS

[0035] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which a number of embodiments of the application are shown by way of illustrative example, and wherein like references refer to similar items. In the drawings:

[0036] Figure 1 Structure diagram of the anti-blocking separation structure of the integrated sewage treatment station suitable for rural areas of the present application;

[0037] Figure 2 Structure diagram of the anti-blocking separation structure of the integrated sewage treatment station suitable for rural areas of the present application;

[0038] Figure 3 Structure diagram of the anti-blocking separation structure of the integrated sewage treatment station suitable for rural areas of the present application;

[0039] Figure 4 Structure diagram of the anti-blocking separation structure of the integrated sewage treatment station suitable for rural areas of the present application;

[0040] Figure 5 Structure diagram of the anti-blocking separation structure of the integrated sewage treatment station suitable for rural areas of the present application;

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 100, conditioning tank; 200, backwashing mechanism; 210, flushing pump; 220, spray head; 310, primary screening structure; 311, strip-shaped grid; 320, secondary screening structure; 321, protective frame; 322, filter screen; 323, wave-shaped structure; 330, anti-blocking cleaning structure; 331, rake tooth; 332, connecting rod; 333, translation structure; 334, wedge-shaped 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

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the prior art, the integrated sewage treatment equipment in rural areas has some limitations and lacks a relatively complete filtering system. Generally, domestic sewage is preliminarily filtered to remove large-diameter solid impurities, then flows to the integrated sewage treatment equipment through the sewage pipe, and then is discharged into the adjusting tank after being manually filtered by the grille.

[0045] At present, in order to reduce the risk of manual grille blockage, the aperture (or interval) of the manual grille is generally appropriately adjusted, and the organic matter content in rural domestic sewage is high, mostly some vegetable leaves and peels, so even if it enters the adjusting tank, it will gradually rot and will not have a great impact on the booster pump. However, the rural domestic sewage also contains solid impurities such as silt and various seeds that are not easy to decompose, and in addition, part of the rural infrastructure is not perfect, and part of the sewage section is set outdoors, so that the solid waste flowing into the adjusting tank may still contain solid impurities such as gravel and small branches, which may affect the normal operation of the booster pump and cause the cleaning cycle of the adjusting tank to be shortened, increasing the labor intensity of the workers. In addition, the smell in the adjusting tank is unpleasant, and the working environment of the workers is poor.

[0046] To solve the above problems, the present application sets a secondary screening structure below the primary screening structure to reduce the entry of solid impurities into the adjusting tank and solve the problem of shortening of the cleaning cycle of the adjusting tank. At the same time, in order to reduce the risk of blockage, the present application also sets a anti-blocking cleaning structure to reduce the blockage of the primary and secondary screening structures and reduce the failure rate.

[0047] Firstly, the present application adjusts the manual grille to a strip-shaped grille, which provides a clearance for the tines, allowing the tines to slide in the left-right direction and push away the solid impurities in the strip-shaped grille.

[0048] Secondly, the anti-blocking cleaning structure is improved, with the upper end of the connecting rod connected to the tines and the lower end connected to the wedge-shaped block. In this way, when the tines move to clean the strip-shaped grille, the wedge-shaped block moves below the protective frame, causing the filter screen to gradually tilt and form a left-high right-low tilt state. At the same time, due to the wave-shaped structure, the filter screen will vibrate when the wedge-shaped block slides, causing some of the solid impurities to slide to the right.

[0049] Since the solid impurities in rural domestic sewage have relatively high viscosity, only vibration is not enough to clean most of the solid impurities, so finally the backwashing mechanism is used to flush the filter screen from the bottom to flush away most of the solid impurities on the filter screen.

[0050] Rural domestic sewage and most solid impurities in sewage have the characteristic of high viscosity. Although the present invention cannot remove all 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 am, once at around 3 pm, and once again at night or early morning) to keep the strip grille and filter screen from being blocked for a long time.

[0051] After introducing the basic principles of the present invention, various non-limiting embodiments of the present invention are described in detail below. The numbers of any elements in the drawings are for illustration only and not for limitation, and any names are for distinction only and do not have any limiting meaning.

[0052] The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0053] Example 1 of the anti-blocking separation structure of the integrated sewage treatment station applicable to rural areas provided by the present invention:

[0054] like Figures 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 .

[0055] like Figure 1 As shown, the primary screening structure 310 is installed at the water inlet of the regulating tank 100. The function of the regulating tank 100 is to regulate the water volume. Since the discharge volume of domestic sewage in rural areas fluctuates greatly (the discharge volume of domestic sewage is usually higher in the morning, noon and evening, and the discharge volume gradually decreases after evening, and even stops at night), the regulating tank 100 is provided to facilitate the collection and unified treatment of domestic sewage. 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.

[0056] The first-level screening structure 310 is used for preliminary filtering of sewage. The first-level 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 in the front-to-back direction. The rectangular intervals between the L-shaped plates allow the rake teeth 331 to move in the direction to clean the solid impurities on the strip grille 311. The L-shaped plates and the partitions on the front and back sides make the strip grille 311 form a three-sided surrounded structure, which facilitates the discharge of solid impurities from the strip grille 311 into the first impurity frame 430.

[0057] like Figure 3 andFigure 4 As shown in the figure, the secondary screening structure 320 is used for filtering sewage, the secondary screening structure 320 comprises a filter screen 322 arranged below the strip-shaped grid 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 discharging solid impurities; the right side of the filter screen 322 is hinged with a hinge shaft, the front and rear ends of the hinge shaft are fixedly connected with the side wall of the adjusting pool 100, so that the filter screen 322 can rotate along the hinge shaft.

[0058] As shown in the figure, Figure 3 and Figure 4 The anti-blocking cleaning structure 330 is used for cleaning the solid impurities on the strip-shaped grid 311 and the filter screen 322, the anti-blocking cleaning structure 330 comprises connecting rods 332 located on the front and rear sides of the secondary screening structure 320 and a translation structure 333 used for driving the two connecting rods 332 to slide in the left-right direction, in the embodiment, the translation structure 333 comprises a driving sprocket and a driven sprocket rotatably assembled on the side wall of the adjusting pool 100, a transmission chain is wound between the driving sprocket and the driven sprocket, the transmission chain is fixedly connected with the connecting rod 332, and a motor (not shown in the figure) used for driving the driving sprocket to rotate is arranged beside the driving sprocket, so that when the motor drives the driving sprocket to rotate, the connecting rod 332 is driven to slide in the left-right direction. In the embodiment, the motor is arranged on the outer side wall of the adjusting pool 100, so as to avoid that the motor is long-term operated in a humid environment and reduce the failure rate of the motor; after the motor is arranged on the outer side wall of the adjusting pool 100, the length of the transmission shaft can be lengthened or a chain can be used to drive the driving sprocket to rotate.

[0059] 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-right direction can also be arranged, and the connecting rod 332 is slidingly connected with the guide rod; the upper part between the two connecting rods 332 is provided with a rake tooth 331 used for cleaning the strip-shaped grid 311, and the lower part of each of the two connecting rods 332 is fixedly connected with a wedge-shaped block 334 used for lifting the protective frame 321 to make the filter screen 322 inclined, and the wedge-shaped block 334 is located at the bottom of the protective frame 321; the main function of the wedge-shaped block 334 is to adjust the inclination angle of the filter screen 322, after the filter screen 322 is inclined, the solid impurities on the filter screen 322 are conveniently flushed into the second impurity frame 440, in addition, the wedge-shaped block 334 can also play a supporting role to support the left side of the filter screen 322.

[0060] The side wall of the adjusting pool 100 is also fixedly provided with a guide rail 336 used for guiding the wedge-shaped block 334, which can play a guiding role on the wedge-shaped block 334.

[0061] In this embodiment, the wedge-shaped block 334 is arc-shaped at the top to reduce wear, and the protective frame 321 is provided with a wavy structure 323 extending in the left-right direction at the bottom, so that when the wedge-shaped block 334 slides left and right, the filter screen 322 is easily vibrated due to the uneven structure at the bottom of the protective frame 321, which is beneficial to the separation of the filter screen 322 and the solid impurities. For example, when small gravel is stuck in the mesh of the filter screen 322, the small gravel may be bounced out or loosened during the vibration of the filter screen 322, which is beneficial to improve the flushing effect.

[0062] In other embodiments, the wavy structure 323 can also be replaced by a rack-like or other structure that can generate vibration.

[0063] The solid impurity temporary storage structure 400 is provided on the right side of the primary screening structure 310 and the secondary screening structure 320, and is used to temporarily store the solid impurities discharged from the strip-shaped grating 311 and the filter screen 322.

[0064] 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, and the bottom of each of the first impurity frame 430 and the second impurity frame 440 is provided with a drain hole, and the bottom surface of each of the first impurity frame 430 and the second impurity frame 440 is inclined, the first impurity frame 430 and the second impurity frame 440 are fixedly connected, the first impurity frame 430 is used to receive the solid impurities discharged from the strip-shaped grating 311, and the second impurity frame 440 is used to receive the solid impurities discharged from the filter screen 322, the first impurity frame 430 is fixedly installed with a handle 420 at the top for holding, which is convenient for taking out the solid impurity temporary storage structure 400. In addition, the handle 420 is further provided with a protective cover 410 above.

[0065] The adjusting tank 100 is further provided with a load-bearing frame 450 for supporting the solid impurity temporary storage structure 400, and the load-bearing frame 450 is fixedly connected with the side wall of the adjusting tank 100.

[0066] As Figure 1 and Figure 2As shown, the backwashing mechanism 200 is used to flush the bottom of the filter screen 322 to clean the filter screen 322. Due to the characteristics (high viscosity) of the limited domestic sewage solid impurities, it is difficult to separate the solid impurities with high viscosity from the filter screen 322, whether it is the inclined filter screen 322 described above, relying on gravity to make part of the solid impurities fall into the second impurity frame 440, or by means of vibration, so that the backwashing mechanism 200 needs to be flushed. The backwashing mechanism 200 includes a spray head 220 fixedly installed on the left side wall of the adjusting tank 100 and a flushing pump 210 installed in the adjusting tank 100, and the flushing pump 210 is connected with the spray head 220 through a pipeline. The flushing water directly comes from the adjusting tank 100, and the flushing water also flows into the adjusting tank 100, so that long-time flushing or frequent flushing can be achieved. The flushing pump 210 is generally arranged at a height of about 1 meter from the bottom of the adjusting tank 100, so as to avoid the influence of the bottom mud on the flushing pump 210 and reduce the failure rate of the flushing pump 210, and also to avoid the difficulty in maintenance due to the high position of the flushing pump 210.

[0067] The embodiment also provides a rural integrated sewage treatment station anti-blocking separation method, which adopts the above-mentioned rural integrated sewage treatment station anti-blocking separation structure and comprises the following steps.

[0068] S1, cleaning the strip-shaped grid 311, the translation structure 333 drives the connecting rod 332 to move, and then drives the rake teeth 331 to move from left to right, so that the solid impurities on the strip-shaped grid 311 are pushed into the first impurity frame 430;

[0069] S2, inclining the filter screen 322, S2 is performed synchronously with S1, and in the moving process 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 inclined, so as to clean the solid impurities on the filter screen 322;

[0070] S3, cleaning the filter screen 322, when the filter screen 322 is inclined, the flushing pump 210 starts to draw water in the adjusting tank 100, and flushes the filter screen 322 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;

[0071] S4, resetting, after the filter screen 322 is cleaned, the translation structure 333 drives the connecting rod 332 to move to the left side, and the resetting is completed;

[0072] S5, cleaning the solid impurities, the staff removes the solid impurity temporary storage structure 400 regularly, and after the solid impurities in the solid impurity temporary storage structure 400 are cleaned, the solid impurity temporary storage structure 400 is reset.

[0073] Embodiment 2 of the rural integrated sewage treatment station anti-blocking separation structure provided by the application:

[0074] The main difference from Example 1 is that:

[0075] In Example 1, the wedge 334 is curved at the top to reduce wear.

[0076] In this example, the wedge 334 is provided with a roller 335 at the top to reduce friction between the wedge 334 and the wave structure 323. The roller 335 changes the sliding friction to rolling friction, thereby reducing wear.

[0077] While the present specification has illustrated and described a number of embodiments of the application, it will be apparent to those skilled in the art that many changes, modifications and substitutions can be made therein without departing from the spirit and scope of the application. It is to be understood that various alternatives to the embodiments of the application described herein can be employed in practicing the application. The scope of the application should be construed to cover all such alternatives and modifications as falling within the spirit and scope of the present application.

Claims

1. A rural integrated sewage treatment station anti-blocking separation structure, comprising: a primary screening structure (310) installed at the water inlet of the adjusting tank (100), the primary screening structure (310) being used for preliminary filtration of sewage; characterized in that the primary screening structure (310) is a strip-shaped grid (311); a secondary screening structure (320) used for secondary filtration of sewage, the secondary screening structure (320) comprising a filter screen (322) arranged below the strip-shaped grid (311), the filter screen (322) being provided with a protective frame (321), the right side of the protective frame (321) being provided with an opening for discharging solid impurities; the right side of the filter screen (322) being hinged to a hinge shaft, the front and rear ends of the hinge shaft being fixedly connected to the side wall of the adjusting tank (100); an anti-blocking cleaning structure (330) for cleaning solid impurities on the strip-shaped grid (311) and the filter screen (322), the anti-blocking cleaning structure (330) comprising connecting rods (332) arranged 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-right direction, the connecting rods (332) being arranged in the vertical direction, a rake tooth (331) for cleaning the strip-shaped grid (311) being arranged above the two connecting rods (332), and a wedge-shaped block (334) for lifting the protective frame (321) to tilt the filter screen (322) being fixedly connected below each of the two connecting rods (332); a solid impurity temporary storage structure (400) arranged on the right side of the primary screening structure (310) and the secondary screening structure (320), the solid impurity temporary storage structure (400) being used for temporarily storing solid impurities discharged from the strip-shaped grid (311) and the filter screen (322); a backwashing mechanism (200) for washing the bottom of the filter screen (322) to clean the filter screen (322), the backwashing mechanism (200) comprising a spray head (220) fixedly installed on the left side wall of the adjusting tank (100) and a washing pump (210) installed in the adjusting tank (100), the washing pump (210) being connected to the spray head (220) through a pipeline; the bottom of the protective frame (321) being provided with a wave-shaped structure (323) extending in the left-right direction, so that the filter screen (322) vibrates during the sliding of the wedge-shaped block (334), thereby separating the filter screen (322) from the solid impurities, so as to wash the filter screen (322) by the backwashing mechanism (200). A guide rail (336) for guiding the wedge-shaped block (334) is also fixedly installed on the side wall of the adjusting tank (100). The top of the wedge-shaped block (334) is arc-shaped to cooperate with the wave-shaped structure (323). The top of the wedge-shaped block (334) is provided with a roller (335) to reduce the friction between the wedge-shaped block (334) and the wave-shaped structure (323). ​ ​ ​ ​ 2. The integrated sewage treatment station anti-blocking separation structure suitable for rural areas according to claim 1, characterized in that: ​ 3. The integrated sewage treatment station anti-blocking separation structure suitable for rural areas according to claim 2, characterized in that: ​ 4. The integrated sewage treatment plant anti-clogging separation structure suitable for rural areas according to claim 2, characterized in that: ​ 5. The integrated sewage treatment plant anti-clogging separation structure suitable for rural areas according to claim 1, characterized in that: The solid impurity temporary storage structure (400) comprises a first impurity frame (430) and a second impurity frame (440) arranged in an up-down direction, wherein the first impurity frame (430) is fixedly connected to the second impurity frame (440), the first impurity frame (430) is used to receive fixed impurities discharged from the strip grid (311), and the second impurity frame (440) is used to receive fixed impurities discharged from the filter screen (322).

6. The integrated sewage treatment plant anti-clogging separation structure suitable for rural use according to claim 5, characterized in that: A load-bearing frame (450) for supporting the solid impurity temporary storage structure (400) is further provided in the regulating tank (100), and the load-bearing frame (450) is fixedly connected to the side wall of the regulating tank (100).

7. The integrated sewage treatment plant anti-clogging separation structure suitable for rural use according to claim 6, characterized in that: A handle (420) for holding is fixedly mounted on the top of the first impurity frame (430).

8. The integrated sewage treatment plant anti-clogging separation structure suitable for rural areas according to claim 1, characterized in that: The translation structure (333) includes a driving sprocket and a driven sprocket rotatably mounted on the side wall of the regulating tank (100), a transmission chain is wound 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 provided next to the driving sprocket.

9. A method for preventing clogging and separation of the integrated sewage treatment station suitable for rural areas, characterized in that the method for preventing clogging and separation of the integrated sewage treatment station suitable for rural areas according to any one of claims 1 to 8 is used. The following steps are involved: 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, 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, and 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 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 flush the filter screen (322) from the bottom of the filter screen (322) through the spray head (220), so that solid impurities on the upper surface of the filter screen (322) are discharged into the second impurity frame (440); S4, reset. After the filter (322) is cleaned, the translation structure (333) drives the connecting rod (332) to move to the left, completing 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.

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