Landscape sewage pretreatment equipment

Abstract

The invention discloses landscape sewage pretreatment equipment, and relates to the field of sewage treatment.The landscape sewage pretreatment equipment comprises an upper box body and a lower box body, the upper box body is connected to the upper portion of the lower box body, a water inlet pipe and a water outlet pipe are fixedly connected to the side face of the upper box body, and a surrounding plate is fixedly connected to the interior of the upper box body and divides the inner space of the upper box body into a primary filtering cavity and a water return cavity; the water inlet pipe is communicated with the primary filter cavity, the water outlet pipe is communicated with the water return cavity, a filter screen is arranged at the bottom of the primary filter cavity, and sewage entering the primary filter cavity enters the lower box body through the filter screen. Sewage is filtered by the filter screen, purified and decomposed by microorganisms and filtered by the filter element in sequence after being introduced into the upper box body, the sewage is fully purified through three-stage treatment, the filter screen can preliminarily filter large impurities, the microorganisms can purify and decompose organic matters, and the filter element can filter out fine solid impurities; meanwhile, equipment does not need to be shut down when the filter element needs to be replaced in the whole filtering process, normal operation of equipment such as a landscape fountain is guaranteed, and the using effect is good.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment, and specifically to a landscape sewage pretreatment device. Background Art

[0002] In today's urban landscape construction and many scenarios with high water quality requirements, devices such as landscape fountains are widely used. These devices have strict requirements for the water quality of the water source. If the water quality is poor, it will not only affect the normal operation of the devices, but may also cause damage to the devices, shorten their service life, and at the same time reduce the aesthetic degree of the landscape.

[0003] When the existing sewage filtration technologies are applied to scenarios such as landscape fountains, there are many problems. The common sewage filtration devices have complex structures, which not only make the equipment cost remain high, but also have great operation difficulties during installation, maintenance and daily use, and require professional personnel to operate, greatly limiting their use convenience. More critically, the existing filtration methods often fail to achieve sufficient purification of sewage. Generally, only a simple filter screen is used for primary filtration, which can only remove larger impurities, and cannot effectively treat the organic matter and fine solid impurities in the sewage, resulting in the purified water quality not meeting the water use standards of devices such as landscape fountains.

[0004] In addition, when the filter element in the existing filtration equipment needs to be replaced, the entire equipment may need to be shut down, which makes devices such as landscape fountains have to stop running, seriously affecting the landscape effect and the normal operation order of relevant places. For example, in crowded public places such as parks and squares, once the landscape fountain stops running, it will bring a bad experience to tourists. Therefore, there is an urgent need for a sewage filtration technology with a simple structure, convenient use, capable of fully purifying sewage, and does not require shutting down the equipment when replacing the filter element.

[0005] For this reason, technical personnel in this field have proposed a landscape sewage pretreatment device to solve the problems raised in the above background. Summary of the Invention

[0006] The purpose of the present invention is to provide a landscape sewage pretreatment device to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions: A landscape sewage pretreatment device includes an upper box body and a lower box body. The upper box body is connected above the lower box body. A water inlet pipe and a water outlet pipe are fixedly connected to the side of the upper box body. A partition board is fixedly connected inside the upper box body. The partition board divides the internal space of the upper box body into a primary filtration chamber and a return water chamber. The water inlet pipe communicates with the primary filtration chamber, and the water outlet pipe communicates with the return water chamber. A filter screen is arranged at the bottom of the primary filtration chamber, and the sewage entering the primary filtration chamber enters the lower box body through the filter screen. A purification and reflux assembly is fixedly connected inside the lower box body, and the purification and reflux assembly is used to purify the sewage flowing into the lower box body and reflux it into the return water chamber.

[0008] As a further scheme of the present invention: The purification and reflux assembly includes a water pump. The water outlet of the water pump is connected to a first-stage pipeline. A plurality of reflux holes are opened on the lower box body, and second-stage pipelines are fixedly connected to the outside of each reflux hole. The ends of the second-stage pipelines are connected to the upper box body. A filtering unit is arranged in the middle of the second-stage pipeline, and the first-stage pipeline alternately cooperates with different reflux holes.

[0009] As a further scheme of the present invention: The filtering unit includes a filtering box. A replaceable filter element is placed inside the filtering box. A valve is fixedly connected to the second-stage pipeline, and the valve is located between the filtering box and the lower box body.

[0010] As a further scheme of the present invention: A mounting base is slidably connected inside the lower box body. The water pump is fixedly connected to the mounting base. A motor is fixedly connected to the side of the lower box body. A horizontal threaded shaft is fixedly connected to the rotor of the motor. The horizontal threaded shaft is in threaded connection with the mounting base.

[0011] As a further scheme of the present invention: A longitudinal blind pipe is fixedly connected to the middle of the first-stage pipeline. The longitudinal blind pipe communicates with the first-stage pipeline. A stirring shaft is slidably connected inside the longitudinal blind pipe. A baffle is fixedly connected to the top of the stirring shaft. The baffle covers the top opening of the longitudinal blind pipe. Spiral blades are fixedly connected to the outside of the stirring shaft. When the sewage impacts the baffle, the baffle moves upward, and at the same time drives the spiral blades to rotate. Stirring rods are fixedly connected to the outside of the bottom of the stirring shaft.

[0012] As a further scheme of the present invention: The first-stage pipeline is in a horizontal state. The front and rear side walls of the lower box body are symmetrically provided with reflux holes, and both ends of the first-stage pipeline cooperate with the reflux holes.

[0013] As a further scheme of the present invention: A driving pulley is fixedly connected to the end of the horizontal threaded shaft. The driving pulley is located outside the lower box body. A driven threaded shaft is rotatably connected to the upper box body. A driven pulley located outside the upper box body is fixedly connected to the end of the driven threaded shaft. The driving pulley and the driven pulley are connected by a transmission belt for transmission. A scraping plate is in threaded connection with the outside of the driven threaded shaft. A brush for cooperating with the filter screen is fixedly connected below the scraping plate.

[0014] As a further solution of the present invention: there are at least three return holes provided on a single side of the lower box body.

[0015] As a further solution of the present invention: the upper box body and the lower box body are connected by bolts, and a top cover is fixedly connected to the top of the upper box body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the structure of the present invention is simple and convenient to use. After the sewage is introduced into the upper box body, it will successively pass through the filtration of the filter screen, the purification and decomposition by microorganisms, and the filtration by the filter element. The three-stage treatment enables the sewage to be purified sufficiently. The filter screen can initially filter out larger impurities, the microorganisms can purify and decompose organic matter, and the filter element can filter out fine solid impurities. At the same time, during the entire filtration process, when the filter element needs to be replaced, there is no need to shut down the equipment, ensuring the normal operation of equipment such as landscape fountains, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a landscape sewage pretreatment device; Figure 2 It is a schematic internal structure diagram of the upper box body in a landscape sewage pretreatment device; Figure 3 It is a schematic structural diagram of the lower box body in a landscape sewage pretreatment device; Figure 4 It is a schematic structural diagram of the lower box body in a landscape sewage pretreatment device from another perspective; Figure 5 It is a schematic diagram of a horizontal threaded shaft and its partial connection structure in a landscape sewage pretreatment device; Figure 6 It is a partial cross-sectional view schematic diagram of a longitudinal blind pipe in a landscape sewage pretreatment device; Figure 7 It is a cross-sectional structural schematic diagram of a filtration unit in a landscape sewage pretreatment device; In the figure: 1, upper box body; 2, lower box body; 3, water inlet pipe; 4, water outlet pipe; 5, enclosing plate; 6, primary filtration chamber; 7, return water chamber; 8, filter screen; 9, purification and return assembly; 10, water pump; 11, first-stage pipeline; 12, return hole; 13, second-stage pipeline; 14, filtration unit; 15, filtration box; 151, filter element; 16, valve; 17, installation base; 18, motor; 19, horizontal threaded shaft; 20, longitudinal blind pipe; 21, stirring shaft; 22, stirring rod; 23, baffle; 24, spiral blade; 25, driving pulley; 26, driven threaded shaft; 27, driven pulley; 28, transmission belt; 29, scraper; 30, brush bristles. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing 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. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0021] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0022] Please refer to Figure 1 and Figure 2 , a landscape sewage pretreatment device, comprising an upper box body 1 and a lower box body 2. The upper box body 1 is connected above the lower box body 2. A water inlet pipe 3 and a water outlet pipe 4 are fixedly connected to the side of the upper box body 1. A partition plate 5 is fixedly connected inside the upper box body 1. The partition plate 5 divides the internal space of the upper box body 1 into a primary filtration chamber 6 and a return water chamber 7. The water inlet pipe 3 is communicated with the primary filtration chamber 6, and the water outlet pipe 4 is communicated with the return water chamber 7. A filter screen 8 is arranged at the bottom of the primary filtration chamber 6. The sewage entering the primary filtration chamber 6 passes through the filter screen 8 and enters the lower box body 2. A purification and reflux assembly 9 is fixedly connected inside the lower box body 2. The purification and reflux assembly 9 is used to purify the sewage flowing into the lower box body 2 and reflux it into the return water chamber 7.

[0023] Before use, install and debug the equipment first. Then, drain the sewage into the equipment through the water inlet pipe 3. After passing through the water inlet pipe 3, the sewage enters the upper box body 1. Since the inside of the upper box body 1 is partitioned into a primary filtration chamber 6 and a return water chamber 7, the incoming sewage is directly in the primary filtration chamber 6. A filter screen 8 is arranged at the bottom inside the primary filtration chamber 6, and the sewage directly passes through the filter screen 8 and enters the lower box body 2 below. The filter screen 8 can filter out larger impurities in the sewage, such as weeds, dead wood, plastic bags, etc. The filtered sewage enters the lower box body 2, and after deep treatment, it is discharged back into the return water chamber 7 inside the upper box body 1 by the purification and reflux assembly 9, and then discharged through the water outlet pipe 4 communicating with the return water chamber 7.

[0024] Please refer to Figure 3 、 Figure 4 and Figure 7 As shown in, the purification and reflux assembly 9 includes a water pump 10. The water outlet of the water pump 10 is connected to a primary pipeline 11. A number of reflux holes 12 are opened on the lower box body 2, and secondary pipelines 13 are fixedly connected to the outside of each reflux hole 12. The connection mode of the secondary pipeline 13 and the lower box body 2 is a detachable connection, preferably a bolt connection. The end of the secondary pipeline 13 is connected to the upper box body 1. A filtering unit 14 is arranged in the middle of the secondary pipeline 13, and the primary pipeline 11 alternately cooperates with different reflux holes 12. The filtering unit 14 includes a filtering box 15. A replaceable filter element 151 is placed inside the filtering box 15. A valve 16 is fixedly connected to the secondary pipeline 13, and the valve 16 is located between the filtering box 15 and the lower box body 2.

[0025] After the purification and reflux assembly 9 is started, the water pump 10 starts to operate, discharging the sewage inside the lower box body 2 through the primary pipeline 11. Since the primary pipeline 11 alternately cooperates with different reflux holes 12, the sewage is discharged from the reflux holes 12 during the cooperation process, and after passing through the filtering unit 14, it is discharged back into the return water chamber 7. The filter element 151 in the filtering unit 14 can filter out fine impurity particles in the sewage, and different filter elements 151 can obtain different filtering effects. For example, wound filter elements, folded filter elements or ion exchange resin filter elements, etc., can be selected according to needs.

[0026] Please refer to Figure 5 As shown in, a mounting base 17 is slidably connected inside the lower box body 2. The water pump 10 is fixedly connected to the mounting base 17. A motor 18 is fixedly connected to the side of the lower box body 2, and a horizontal threaded shaft 19 is fixedly connected to the rotor of the motor 18. The horizontal threaded shaft 19 is threadedly connected to the mounting base 17.

[0027] The water pump 10 is installed on the mounting base 17 and changes its position inside the lower box body 2 as the motor 18 rotates. The rotation of the motor 18 drives the horizontal threaded shaft 19 to rotate, and then drives the mounting base 17 to reciprocate to adjust the position. The rotation direction of the horizontal threaded shaft 19 controls the moving direction of the mounting base 17, and the motor 18 controls the rotation direction of the horizontal threaded shaft 19. The control of the rotation direction of the motor 18 is a conventional technical means in the art.

[0028] Please refer to Figure 5 and Figure 6 , a longitudinal blind pipe 20 is fixedly connected to the middle of the primary pipe 11. The longitudinal blind pipe 20 is communicated with the primary pipe 11. A stirring shaft 21 is slidably connected inside the longitudinal blind pipe 20. A baffle 23 is fixedly connected to the top of the stirring shaft 21. The baffle 23 covers the top opening of the longitudinal blind pipe 20. A spiral blade 24 is fixedly connected to the outer side of the stirring shaft 21. When the sewage impacts the baffle 23, the baffle 23 moves upward, and at the same time drives the spiral blade 24 to rotate. A stirring rod 22 is fixedly connected to the outer side of the bottom of the stirring shaft 21.

[0029] A longitudinal blind pipe 20 is also provided in the middle of the primary pipe 11. When the primary pipe 11 is not cooperating with the return hole 12, limited by the water supply pressure of the water pump 10, the sewage will impact the baffle 23 upward. The baffle 23 moves upward, and at the same time the water flow will impact the spiral blade 24. The spiral blade 24 rotates to drive the stirring shaft 21 and the stirring rod 22 to rotate synchronously, realizing the stirring of the sewage inside the lower box body 2, thereby optimizing the biological reaction.

[0030] Please refer to Figure 2 , a driving pulley 25 is fixedly connected to the end of the horizontal threaded shaft 19. The driving pulley 25 is located outside the lower box body 2. A driven threaded shaft 26 is rotatably connected to the upper box body 1. A driven pulley 27 located outside the upper box body 1 is fixedly connected to the end of the driven threaded shaft 26. The driving pulley 25 and the driven pulley 27 are drivingly connected by a transmission belt 28. A scraper 29 is threadedly connected to the outer side of the driven threaded shaft 26. A brush hair 30 cooperating with the filter screen 8 is fixedly connected below the scraper 29.

[0031] During the sewage treatment process, a biological treatment agent needs to be placed inside the lower box body 2. The treatment agent can react with organic substances to degrade them, and stirring can fully mix and contact the substrates such as organic substances in the sewage with microorganisms. This is beneficial for microorganisms to better adsorb and decompose organic substances, improve the biological treatment efficiency, and ensure the effective removal of pollutants in the sewage. At the same time, for aerobic biological treatment, stirring can make the oxygen in the air dissolve more evenly in the sewage, ensure the uniform distribution of dissolved oxygen in the reaction system, provide a good survival and metabolic environment for aerobic microorganisms, promote their growth and reproduction, and enhance the degradation ability of pollutants in the sewage. When the first-stage pipeline 11 cooperates with the return hole 12, the water pressure is released through the return hole 12, and the stirring shaft 21, the stirring rod 22, and the baffle 23 will move downward under their own weights, and the baffle 23 will cover the top outlet position of the longitudinal blind pipe 20.

[0032] During the sewage treatment process, the driving pulley 25 will synchronously drive the driven pulley 27 to rotate, and the driven pulley 27 drives the scraper 29 to reciprocate, so that the bristles 30 at the bottom of the scraper 29 can scrape the larger dirt on the filter screen 8 to both sides of the primary filtration chamber 6 to ensure the normal function of the primary filtration chamber 6.

[0033] Embodiment 2: This embodiment is improved as follows on the basis of the previous embodiment: The first-stage pipeline 11 is in a horizontal state, and return holes 12 are symmetrically arranged on the front and rear side walls of the lower box body 2, and both ends of the first-stage pipeline 11 are matched with the return holes 12. The number of return holes 12 provided on a single side of the lower box body 2 is not less than three. The upper box body 1 and the lower box body 2 are connected by bolts, and a top cover is fixedly connected to the top of the upper box body 1. The top cover can prevent dust from falling inside the upper box body 1 and can be opened when the upper box body 1 needs to be cleaned.

[0034] In this embodiment, the sewage can be discharged from the inner side of the lower box body 2 at the same time, improving the treatment efficiency. At the same time, it is worth mentioning that during the process of replacing the filter element 151 in this application, there is no need to stop the normal operation of the equipment at all. Just close the valve 16 corresponding to the filter element 151 to cut off the water flow, and then directly replace the filter element 151. At this time, when the first-stage pipeline 11 cooperates with the corresponding return hole 12, the stirring shaft 21 and the stirring rod 22 will rotate to stir the deposited organic matter and the like at the corresponding position to avoid the organic matter in the dead corner being difficult to be fully treated. After the equipment has been used for a long time, it needs to be maintained and repaired, thoroughly cleaned the lower box body 2, and replace the treatment agent in the lower box body 2.

[0035] Working principle: Before use, install and debug the equipment. Then, discharge the sewage into the equipment through the water inlet pipe 3. After passing through the water inlet pipe 3, the sewage enters the upper box body 1. Since the inside of the upper box body 1 is partitioned into a primary filtration chamber 6 and a return water chamber 7, the incoming sewage is directly in the primary filtration chamber 6. A filter screen 8 is arranged at the bottom inside the primary filtration chamber 6, and the sewage directly passes through the filter screen 8 and enters the lower box body 2 below. The filter screen 8 can filter out larger impurities in the sewage, such as weeds, dead wood, plastic bags, etc. The filtered sewage enters the lower box body 2, and after deep treatment, it is discharged back into the return water chamber 7 inside the upper box body 1 by the purification and return component 9, and then discharged through the water outlet pipe 4 communicated with the return water chamber 7.

[0036] After the purification and return component 9 is turned on, the water pump 10 starts to operate, discharging the sewage inside the lower box body 2 outward through the primary pipeline 11. Since the primary pipeline 11 cooperates with different return holes 12 alternately, during the cooperation process, the sewage is discharged from the return holes 12 and then discharged back into the return water chamber 7 after passing through the filtration unit 14. The filter element 151 in the filtration unit 14 can filter out fine impurity particles in the sewage, and different filter elements 151 can obtain different filtration effects. For example, wound filter elements, folded filter elements, or ion exchange resin filter elements, etc., can be selected according to needs.

[0037] The water pump 10 is installed on the installation base 17 and changes its position inside the lower box body 2 as the motor 18 rotates. The rotation of the motor 18 drives the horizontal threaded shaft 19 to rotate, and then drives the installation base 17 to move reciprocally to adjust the position. The rotation direction of the horizontal threaded shaft 19 controls the moving direction of the installation base 17, and the motor 18 controls the rotation direction of the horizontal threaded shaft 19. The control of the rotation direction of the motor 18 is a conventional technical means in the art.

[0038] A longitudinal blind pipe 20 is also arranged in the middle of the primary pipeline 11. When the primary pipeline 11 does not cooperate with the return hole 12, limited by the water supply pressure of the water pump 10, the sewage will impact the baffle 23 upward. The baffle 23 moves upward, and at the same time, the water flow will impact the spiral blade 24. The rotation of the spiral blade 24 drives the stirring shaft 21 and the stirring rod 22 to rotate synchronously, realizing the stirring of the sewage inside the lower box body 2, thereby optimizing the biological reaction.

[0039] During the process of sewage treatment, a biological treatment agent needs to be placed inside the lower box body 2. The treatment agent can react with organic substances to degrade them. Stirring can make the substrates such as organic substances in the sewage fully mixed and contacted with microorganisms. This is beneficial for microorganisms to better adsorb and decompose organic substances, improve the biological treatment efficiency, and ensure the effective removal of pollutants in the sewage. At the same time, for aerobic biological treatment, stirring can make the oxygen in the air dissolve more evenly in the sewage, ensure the uniform distribution of dissolved oxygen in the reaction system, provide a good survival and metabolic environment for aerobic microorganisms, promote their growth and reproduction, and enhance the degradation ability of pollutants in the sewage. When the first-stage pipeline 11 cooperates with the reflux hole 12, the water pressure is released through the reflux hole 12, and the stirring shaft 21, the stirring rod 22, and the baffle 23 will move downward under their own weights, and the baffle 23 will cover the top outlet position of the longitudinal blind pipe 20.

[0040] During the process of sewage treatment, the driving pulley 25 will synchronously drive the driven pulley 27 to rotate, and the driven pulley 27 drives the scraper 29 to reciprocate, so that the bristles 30 at the bottom of the scraper 29 can scrape the larger dirt on the filter screen 8 to both sides of the primary filtration chamber 6 to ensure the normal function of the primary filtration chamber 6.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A landscape sewage pretreatment device, comprising an upper box body (1) and a lower box body (2), the upper box body (1) is connected above the lower box body (2), and a water inlet pipe (3) and a water outlet pipe (4) are fixedly connected to the side surface of the upper box body (1), characterized in that, Inside the upper box body (1), a partition plate (5) is fixedly connected. The partition plate (5) divides the internal space of the upper box body (1) into a primary filtration chamber (6) and a return water chamber (7). The water inlet pipe (3) communicates with the primary filtration chamber (6), and the water outlet pipe (4) communicates with the return water chamber (7). A filter screen (8) is arranged at the bottom of the primary filtration chamber (6). The sewage entering the primary filtration chamber (6) passes through the filter screen (8) and enters the lower box body (2). Inside the lower box body (2), a purification and return component (9) is fixedly connected. The purification and return component (9) is used to purify the sewage flowing into the lower box body (2) and then return it to the return water chamber (7).

2. The landscape sewage pretreatment equipment according to claim 1, wherein The purification and return component (9) includes a water pump (10). The water outlet of the water pump (10) is connected to a first-stage pipeline (11). A number of return holes (12) are formed in the lower box body (2). Second-stage pipelines (13) are fixedly connected to the outside of the return holes (12). The ends of the second-stage pipelines (13) are connected to the upper box body (1). A filtering unit (14) is arranged in the middle of the second-stage pipeline (13). The first-stage pipeline (11) cooperates with different return holes (12) alternately.

3. The landscape sewage pretreatment equipment according to claim 2, characterized in that, The filtering unit (14) includes a filtering box (15). A replaceable filter element (151) is placed inside the filtering box (15). A valve (16) is fixedly connected to the second-stage pipeline (13). The valve (16) is located between the filtering box (15) and the lower box body (2).

4. The landscape sewage pretreatment equipment according to claim 3, characterized in that, An installation base (17) is slidably connected inside the lower box body (2). The water pump (10) is fixedly connected to the installation base (17). A motor (18) is fixedly connected to the side of the lower box body (2). A horizontal threaded shaft (19) is fixedly connected to the rotor of the motor (18). The horizontal threaded shaft (19) is threadedly connected to the installation base (17).

5. The landscape sewage pretreatment equipment according to any one of claims 2-4, characterized in that, A longitudinal blind pipe (20) is fixedly connected to the middle of the first-stage pipeline (11). The longitudinal blind pipe (20) communicates with the first-stage pipeline (11). A stirring shaft (21) is slidably connected inside the longitudinal blind pipe (20). A baffle plate (23) is fixedly connected to the top of the stirring shaft (21). The baffle plate (23) covers the top opening of the longitudinal blind pipe (20). A spiral blade (24) is fixedly connected to the outside of the stirring shaft (21). When the sewage impacts the baffle plate (23), the baffle plate (23) moves upward, and at the same time drives the spiral blade (24) to rotate. A stirring rod (22) is fixedly connected to the outside of the bottom of the stirring shaft (21).

6. The landscape sewage pretreatment equipment according to any one of claims 2-4, characterized in that, The first-stage pipeline (11) is in a horizontal state. Return holes (12) are symmetrically formed in the front and rear side walls of the lower box body (2). Both ends of the first-stage pipeline (11) cooperate with the return holes (12).

7. The landscape sewage pretreatment equipment according to claim 4, characterized in that A driving pulley (25) is fixedly connected to the end of the horizontal threaded shaft (19). The driving pulley (25) is located outside the lower box body (2). A driven threaded shaft (26) is rotatably connected to the upper box body (1). A driven pulley (27) located outside the upper box body (1) is fixedly connected to the end of the driven threaded shaft (26). The driving pulley (25) and the driven pulley (27) are driven and connected by a transmission belt (28). A scraper (29) is threadedly connected to the outside of the driven threaded shaft (26). A brush hair (30) cooperating with the filter screen (8) is fixedly connected below the scraper (29).

8. The landscape sewage pretreatment equipment according to claim 2, wherein The return holes (12) on a single side of the lower box body (2) are provided with no less than three.

9. The landscape sewage pretreatment equipment according to claim 1, characterized in that, The upper box body (1) and the lower box body (2) are connected by bolts, and a top cover is fixedly connected to the top of the upper box body (1).

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