A rainwater filtering device

Abstract

The present invention relates to a rainwater filtering device, and belongs to the technical field of filtering equipment. The present invention connects blade I, a spiral guide plate, and blade III through a rotating shaft. After the water flow passes through the water collecting bucket and is pressurized, the flow rate increases and impacts blade I. After the water flow is filtered, it passes through the annular guide plate and is pressurized by changing the diameter, and then impacts blade III. The rotating shaft is driven to rotate by blades I and III, and the rotating shaft drives the spiral guide plate to rotate, thereby forming a rotating water flow in the filter cartridge, increasing the impact of the water flow on the filter cartridge wall, and effectively improving the filtering effect of the filter cartridge. At the same time, when the filter cartridge passes through the spiral guide plate, the water flow will also drive it to rotate through the spiral guide plate, ensuring that the spiral guide plate can also rotate when the water flow is small. During the rotation process, the spiral guide plate can also scrape up the debris attached to the inner wall of the filter cartridge, so that these debris can flow down to the bottom of the filter cartridge with the water flow, ensuring the filtering capacity of the filter cartridge.

Description

Technical Field

[0001] The invention belongs to the technical field of filtering equipment, and in particular relates to a rainwater filtering device. Background Art

[0002] With the development of society, in order to solve the problems of water shortage, environment and ecology, people pay more and more attention to rainwater collection and utilization. Rainwater collection brings many benefits to life. The collected rainwater is used for laundry, car washing or irrigation, etc. The collection and utilization of rainwater can also reduce the runoff of rainwater in urban streets, reduce the pressure of urban drainage, and effectively reduce the confluence of rainwater and sewage, and reduce the pressure of sewage treatment. However, nowadays, rainwater collection in special environments such as high slopes, rock slopes, desert Gobi areas or areas with poor air quality and severe dust has the problem of being difficult to collect and difficult to treat for secondary applications. Rainwater is easily mixed with impurities in the surrounding environment through contact, resulting in impurities such as mud and sand particles in the collected rainwater. The precipitation method is time-consuming and labor-intensive, and the impact of secondary evaporation needs to be considered. The use of ordinary mesh filters has the problem of requiring manual subsequent cleaning of the plug, which causes great inconvenience.

[0003] Rainwater filtration is an important part of rainwater collection. Nowadays, most rainwater filtration is mesh filtration, followed by sedimentation filtration. The filtration efficiency is average. Secondly, the filtration method requires a large investment and needs to create a suitable filtration environment and space. It cannot be combined with actual pipelines for filtration and is not very practical. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a rainwater filtering device which is small in size, easy to use and can quickly filter the collected rainwater.

[0005] To achieve the above object, the present invention is implemented according to the following technical scheme:

[0006] The rainwater filtering device comprises a cylinder, a water collecting bucket, a filter cartridge, and an outlet pipe; the cylinder is provided with a conical water collecting bucket, a filter cartridge, an annular guide plate, and an outlet pipe from top to bottom, and the annular guide plate is used to guide the water filtered by the filter cartridge into the outlet pipe; a rotating shaft coaxially mounted in the cylinder is rotatably mounted therein, and blades I, a spiral guide plate, a bearing plate, and blades III are sequentially mounted on the rotating shaft; wherein blade I is fixedly connected to the rotating shaft and is located at the bottom of the water collecting bucket; the spiral guide plate is fixedly mounted on the rotating shaft and is located in the filter cartridge, and its outer edge is tangent to the inner wall of the filter cartridge; the bearing plate is located at the bottom of the filter cartridge and is used to close the bottom of the filter cartridge; blade III is fixedly mounted on the rotating shaft and is located in the outlet pipe; the rotation direction of blade I after being impacted by the water flow is the same as the torsion direction of the spiral guide plate, and blades I and III have the same rotation directions after being impacted by the water flow.

[0007] Preferably, the water collecting bucket is covered with a filter net.

[0008] Preferably, the inner wall of the water collecting bucket is provided with a spirally arranged guide groove whose torsion direction is the same as the rotation direction of the blade I.

[0009] Preferably, the rotating shaft is provided with a gear located below the spiral guide plate, the periphery of the gear is provided with a planetary wheel meshing with the planetary frame through a planetary frame, the planetary frame is clamped with the supporting plate through a connecting piece, the periphery of the planetary wheel is provided with an outer gear ring meshing with the planetary wheel, and the outer gear ring is fixedly connected to the filter cartridge through blade II.

[0010] Preferably, the supporting plate is rotatably connected to the rotating shaft, and the supporting plate is slidably connected to the cylinder. A sewage pipe is provided on the supporting plate, and the upper end of the sewage pipe extends toward the inside of the filter cylinder, and the lower end of the filter cylinder extends toward the outside of the water outlet pipe. A sewage outlet is provided at the upper end of the sewage pipe, and the outer wall of the sewage pipe is tangent to the inner wall of the filter cylinder.

[0011] Preferably, a spring is provided on the rotating shaft, the upper end of the spring is in contact with the bearing plate, and the lower end of the spring is fixed by a boss fixed on the rotating shaft.

[0012] Preferably, the middle portion of the supporting plate protrudes upward.

[0013] Beneficial effects of the present invention:

[0014] The present invention connects blade I, spiral guide plate and blade III through a rotating shaft. After the water flow is pressurized by the water collecting bucket, the flow rate increases and impacts blade I. After the water flow is filtered, it is pressurized by the annular guide plate and impacts blade III. The rotating shaft is driven to rotate by blade I and blade III, and the rotating shaft drives the spiral guide plate to rotate, thereby forming a rotating water flow in the filter cartridge, increasing the impact of the water flow on the filter cartridge wall, and effectively improving the filtering effect of the filter cartridge. At the same time, when the filter cartridge passes through the spiral guide plate, the water flow will also drive the spiral guide plate to rotate, ensuring that the spiral guide plate can also rotate when the water flow is small. During the rotation process, the spiral guide plate can also scrape up the debris attached to the inner wall of the filter cartridge, so that these debris can flow downward to the bottom of the filter cartridge with the water flow, ensuring the filtering capacity of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the installation of the water collecting bucket of the present invention;

[0018] Figure 3 This is a schematic diagram of the installation of components on the installation shaft of the present invention;

[0019] Figure 4 This is a schematic diagram of the installation of the planetary gear of the present invention;

[0020] Figure 5 It is a schematic diagram of the connection between the bearing plate and the cylinder of the present invention;

[0021] Figure 6 It is a schematic diagram of the installation of the connecting piece of the present invention;

[0022] In the figure, 1-cylinder, 2-water collecting bucket, 3-filter cylinder, 4-water outlet pipe, 5-rotating shaft, 6-blade I, 7-spiral guide plate, 8-bearing plate, 9-blade III, 10-filter screen, 11-guide groove, 12-gear, 13-planetary gear, 14-connecting piece, 15-outer gear ring, 16-blade II, 17-drain pipe, 18-drain port, 19-spring, 20-boss. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0024] The filter element 3 is a kind of rainwater filtering device, and the rainwater filtering device comprises a cylinder 1, a water collecting bucket 2, a filter cylinder 3, and a water outlet pipe 4; the cylinder 1 is provided with a conical water collecting bucket 2, a filter cylinder 3, an annular guide plate, and a water outlet pipe 4 from top to bottom in sequence. The water collecting bucket 2 is larger at the top and smaller at the bottom, and the pressure and flow rate of the water flow are effectively improved by reducing the inner diameter of the pipe; the filter cylinder 3 is tubular, and the upper and lower ends are open, and it is used to filter out solid inclusions in rainwater; the annular guide plate is hollow truncated cone-shaped, fixedly installed in the cylinder 1, and is used to guide the water filtered by the filter cylinder 3 into the water outlet pipe 4, and at the same time, the water outlet pressure and flow rate are increased by changing the diameter; the water outlet pipe 4 is fixedly installed in the middle of the bottom end of the cylinder 1 through some sheet metal, and the upper end is connected to the annular guide plate, and is used to receive the clean water after filtering and guide it out of the filtering device; a rotating shaft 5 coaxial with it is rotatably installed in the cylinder 1, and the rotating shaft 5 is provided with blades in sequence Piece Ⅰ6, spiral guide plate 7, bearing plate 8, blade III 9; wherein blade Ⅰ6 is fixedly connected to the rotating shaft 5 and is located at the bottom of the water collecting bucket 2. Blade Ⅰ6 is in a 1 / 4 arc shape and is evenly spaced along the circumferential direction of the rotating shaft 5. Rainwater impacts blade Ⅰ6 after being pressurized by the water collecting bucket 2, thereby driving the rotating shaft 5 to rotate; spiral guide plate 7 is fixedly installed on the rotating shaft 5, located in the filter cartridge 3, and the outer edge is tangent to the inner wall of the filter cartridge 3. Water flows into the filter cartridge 3 after passing through blade Ⅰ6, and flows downward along the spiral guide plate 7, pushing the rotating shaft 5 to rotate, and also providing part of the power for the rotation of the rotating shaft 5. During the rotation process, the spiral guide plate 7 scrapes out the mud and sand adhering to the filter cartridge 3, and then flows downward into the bottom of the filter cartridge under the impact of the water flow, effectively cleaning the upper half of the filter cartridge, scraping out the debris adhering to the inner wall of the filter cartridge 3, thereby restoring the filtering effect of the filter. At the same time, when the water flow is small, the water flows along the spiral guide plate 7, which effectively extends the flow distance of water in the filter cartridge 3, so that the water can fully contact and filter with the upper part of the filter cartridge 3, forming a rotating water flow rotating around the spiral guide plate 7, obliquely impacting the filter cartridge, and effectively accelerating the filtration efficiency; when the water flow is large, the water flow fills the filter cartridge 3, and the rotating spiral guide plate 7 drives the water flow in the filter cartridge 3 to rotate, forming a rotating water column in the filter cartridge 3, thereby enhancing the impact of the water flow on the wall of the filter cartridge 3 and improving the rainwater filtration capacity. The bearing plate 8 is located at the bottom of the filter cartridge 3 and is used to close the bottom of the filter cartridge 3; the blade III9 is ​​fixedly mounted on the rotating shaft 5 and is located in the outlet pipe 4. When the filtered rainwater enters the outlet pipe 4, the water flow impacts the blade III9 to generate power, driving the rotating shaft 5 to rotate; the rotation direction of the blade I6 after being impacted by the water flow is the same as the twisting direction of the spiral guide plate 7, and the blade I6 and the blade III9 have the same rotation direction after being impacted by the water flow. The blade I6, the spiral guide plate 7, and the blade III9 are used to jointly drive the rotating shaft 5 to rotate, thereby effectively enhancing the rotational power of the rotating shaft 5 and effectively ensuring that the rotating shaft is evenly driven to rotate under small or large water flow conditions.

[0025] In the present invention, the water collecting bucket 2 is covered with a filter screen 10, and the filter screen 10 adopts a mesh with a larger aperture to prevent larger debris from entering the cylinder body 1 and causing damage to the filter cylinder 3, thereby ensuring the safe operation of the device.

[0026] In the present invention, a spirally arranged guide groove 11 is provided on the inner wall of the water collecting bucket 2, and the torsion direction of the guide groove 11 is the same as the rotation direction of the blade Ⅰ6. When the water volume is small, when the water flows along the guide groove 11 to the bottom, a water flow inclined to the blade Ⅰ6 is formed, so that the water flow is inclined to impact the blade Ⅰ6. Compared with the water flow directly flowing in, the blade Ⅰ6 is impacted more, providing greater power for the rotation of the rotating shaft 5; when the water flow is large, a water flow with the same rotation direction as the blade Ⅰ6 is formed in the water collecting bucket 2 through the guide groove 11, which effectively increases the rotational force of the blade Ⅰ6.

[0027] In the present invention, the rotating shaft 5 is provided with a gear 12 located below the spiral guide plate 7, the gear 12 is fixedly connected to the rotating shaft, and a planetary gear 13 meshing with the gear 12 is provided on the periphery of the gear 12 through a planetary carrier, and the planetary carrier is clamped with the supporting plate 8 through a connecting piece 14. The mounting position of the planetary carrier on the rotating shaft 5 is in the shape of a stepped shaft, and the planetary carrier is rotatably mounted on the step, thereby fixing the position of the entire planetary carrier. The connecting piece 14 is in the shape of a sheet, fixedly mounted on the lower side of the planetary carrier, and extending downward. A sleeve is provided in the middle of the supporting plate 8, and a slot matching the connecting piece 14 is provided on the sleeve, thereby forming a clamping effect, so that the supporting plate 8 and the planetary carrier can move relative to each other in the axial direction of the rotating shaft 5, and at the same time fix the planetary carrier to prevent it from rotating. An outer gear ring 15 meshing with the planetary gear 13 is disposed on the periphery thereof. The outer gear ring 15 is fixedly connected to the filter cartridge 3 via blades II 16. When the rotating shaft 5 rotates, the outer gear ring 15 is driven to rotate via the planetary gear 13. The outer gear ring 15 drives the filter cartridge 3 to rotate via blades II 16. The rotating filter cartridge 3 and the rotating water flow form a relative rotation effect, which effectively improves the filtering efficiency of the filter cartridge 3 on the water flow. At the same time, the filter cartridge 3 is rotatably mounted on the rotating shaft 5 via blades II 16 and the planetary gear system. The supporting plate 8 is rotatably connected to the rotating shaft 5, and the supporting plate 8 is slidably connected to the cylinder 1. A sewage pipe 17 is provided on the supporting plate 8. The upper end of the sewage pipe 17 extends to the inside of the filter cartridge 3, and the lower end of the filter cartridge 3 extends to the outside of the water outlet pipe 4. A sewage outlet 18 is provided at the upper end of the sewage pipe 17, and the outer wall of the sewage pipe 17 is tangent to the inner wall of the filter cartridge 3. When the filter cartridge 3 rotates, the sewage pipe 17 scrapes out the debris attached to the wall of the filter cartridge 3, and the debris is discharged out of the device along the sewage pipe 17. At the same time, part of the rainwater is discharged along the sewage pipe 17 to flush the sewage pipe 17. While lubricating the sewage pipe 17, the debris in the sewage pipe 17 is flushed out of the sewage pipe 17, thereby effectively avoiding the problem of blockage of the sewage pipe 17.

[0028] In the present invention, a spring 19 is provided on the rotating shaft 5, the upper end of the spring 19 is in contact with the supporting plate 8, and the lower end is fixed by a boss 20 fixedly arranged on the rotating shaft 5. When the mesh of the filter cartridge 3 is blocked and the water pressure in the filter cartridge 3 is too high, the water pressure presses the supporting plate 8 downward, thereby separating the supporting plate 8 from the bottom of the filter cartridge 3, increasing the water output of the filter cartridge 3, and effectively protecting the safety of the filter cartridge 3.

[0029] In the present invention, the middle part of the supporting plate 8 is convex upward. When the water flow is small, the inclined supporting plate 8 makes the water flow and debris flow to the wall of the filter cartridge 3. The rainwater is discharged after passing through the filter cartridge 3, and the debris is scraped into the sewage pipe 17 and then discharged from the device.

[0030] The working process of the present invention is as follows: water flows into the water collecting bucket 2 after preliminary filtration through the filter screen 10, and forms a rotating water flow under the action of the guide groove 11. At the same time, the water flow is pressurized to increase the flow rate of the water, and then impacts the blade I6, and the blade I6 drives the rotating shaft 5 to rotate; the water flows into the filter cartridge 3, flows along the spiral guide plate, forms a rotating water flow to impact the inner wall of the filter cartridge 3, accelerates the filtration efficiency of the filter cartridge 3, and at the same time, drives the rotating shaft to rotate through the spiral guide plate; after passing through the spiral guide plate, the water flows impact the blade II 16, driving the blade II 16 to drive the filter cartridge 3 to rotate in the opposite direction, thereby accelerating the filtration rate; during the rotation process, the rotating shaft 5 drives the outer gear ring 15 to rotate in the opposite direction through the planetary gear system, and the outer gear ring 15 drives the filter cartridge 3 to rotate through the blade II 16. When the filter cartridge 3 rotates, the sewage pipe 17 scrapes the debris adhering to the inner wall of the filter cartridge 3 and guides it out, effectively restoring the filtering capacity of the filter cartridge 3; when there are many debris in the water flow, causing the filtering effect of the filter cartridge 3 to drop rapidly, the water pressure in the filter cartridge 3 rises, driving the bearing plate 8 downward, separating the bearing plate 8 from the bottom of the filter cartridge 3, thereby opening the bottom of the filter cartridge 3, quickly discharging the water machine debris in the filter cartridge 3, and effectively ensuring the safety of the filter cartridge 3. After a period of time, the debris in the filter cartridge 3 is reduced, and the bearing plate 8 moves upward and resets under the drive of the spring 19, thereby closing the bottom of the filter cartridge 3 again. The filtered water flows into the annular guide plate, and after being pressurized by the annular guide plate, it hits the blade III again, drives the rotating shaft 5 to rotate through the blade III9, and finally is discharged from the outlet pipe.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention; the dimensions of the drawings are independent of the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A rainwater filtering device, characterized in that: The rainwater filtering device comprises a cylinder (1), a water collecting bucket (2), a filter cylinder (3), and a water outlet pipe (4); the cylinder (1) is provided with a conical water collecting bucket (2), a filter cylinder (3), an annular guide plate, and a water outlet pipe (4) in sequence from top to bottom, and the annular guide plate is used to guide the water filtered by the filter cylinder (3) into the water outlet pipe (4); A rotating shaft (5) coaxial with the cylinder (1) is rotatably mounted in the cylinder (1), and blades I (6), a spiral guide plate (7), a bearing plate (8), and blades III (9) are sequentially mounted on the rotating shaft (5); wherein blade I (6) is fixedly connected to the rotating shaft (5) and is located at the bottom of the water collecting bucket (2); the spiral guide plate (7) is fixedly mounted on the rotating shaft (5), is located in the filter cylinder (3), and its outer edge is tangent to the inner wall of the filter cylinder (3); the bearing plate (8) is located at the bottom of the filter cylinder (3) and is used to seal the bottom of the filter cylinder (3); the blades The blades Ⅰ (6) and Ⅲ (9) are fixedly mounted on the rotating shaft (5) and are located in the water outlet pipe (4); the direction of rotation of the blades Ⅰ (6) after being impacted by the water flow is the same as the twisting direction of the spiral guide plate (7); the blades Ⅰ (6) and Ⅲ (9) rotate in the same direction after being impacted by the water flow; the water flow impacts the blades Ⅲ (9) to generate power, driving the rotating shaft (5) to rotate; the blades Ⅰ (6), the spiral guide plate (7) and the blades Ⅲ (9) jointly drive the rotating shaft (5) to rotate, thereby enhancing the rotational power of the rotating shaft (5); The inner wall of the water collecting bucket (2) is provided with a spirally arranged flow guide groove (11) whose torsion direction is the same as the rotation direction of the blade I (6). Under the action of the flow guide groove (11), a rotating water flow is formed and at the same time, the water flow is pressurized to increase the flow rate of the water; The rotating shaft (5) is provided with a gear (12) located below the spiral guide plate (7); a planetary gear (13) meshing with the gear (12) is provided on the periphery of the gear (12) through a planetary carrier; the planetary carrier is clamped with the carrier plate (8) through a connecting piece (14); an outer gear ring (15) meshing with the planetary gear (13) is provided on the periphery of the planetary gear (13); the outer gear ring (15) is fixedly connected to the filter cartridge (3) through a blade II (16); The spiral guide plate (7) is used to form a rotating water flow, which obliquely impacts the filter cartridge (3) to enhance the impact of the water flow on the wall of the filter cartridge (3). After passing through the spiral guide plate (7), the water flow impacts the blade II (16), driving the blade II (16) to drive the filter cartridge (3) to rotate in the opposite direction. The water collecting bucket (2) is covered with a filter net (10).

2. A rainwater filtering device according to claim 1, characterized in that: The bearing plate (8) is rotatably connected to the rotating shaft (5), and the bearing plate (8) is slidably connected to the cylinder (1). A sewage discharge pipe (17) is provided on the bearing plate (8), and the upper end of the sewage discharge pipe (17) extends toward the inside of the filter cylinder (3), and the lower end of the filter cylinder (3) extends toward the outside of the water outlet pipe (4). A sewage discharge port (18) is provided at the upper end of the sewage discharge pipe (17), and the outer wall of the sewage discharge pipe (17) is tangent to the inner wall of the filter cylinder (3).

3. A rainwater filtering device according to claim 2, characterized in that: The rotating shaft (5) is provided with a spring (19), the upper end of the spring (19) is in contact with the bearing plate (8), and the lower end is fixed by a boss (20) fixedly arranged on the rotating shaft (5).

4. A rainwater filtering device according to claim 3, characterized in that: The middle part of the carrying plate (8) protrudes upwards.

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