Micro-irrigation water filtering device

Abstract

The utility model provides a micro-irrigation water filtering device which comprises a filtering tank body, a first space is formed in the filtering tank body, a water inlet is formed in the side wall of the filtering tank body, the axis direction of the water inlet is tangent to the side wall of the filtering tank body, and a water outlet is formed in the top of the filtering tank body; the filtering assembly is arranged in the first space and is higher than the water inlet, and the first space is communicated with the water outlet through the filtering assembly; the filter assembly at least comprises a hollow filter element, and the interior of the filter element is communicated with the first space; the pollution discharge assembly is arranged in the filter element, and the pollution discharge assembly at least comprises a plurality of pollution suction ports close to the inner wall of the filter element and is used for sucking impurities attached to the inner wall of the filter element. According to the scheme, the filtering assembly and the filtering tank body are integrated, the number of connecting pipelines is reduced, hydraulic loss is reduced, and equipment is small in occupied space for installation, light in weight and rapid to install and use; in addition, the sewage discharging assembly arranged in the filter element can suck sewage when excessive impurities are attached to the filter element, and the self-cleaning capacity of the filter element is improved.

Description

Technical Field

[0001] The present application relates to the field of micro-irrigation technology, and in particular to a micro-irrigation water filtering device. Background Art

[0002] Micro-irrigation is a modern irrigation method. It uses a low-pressure pipe system and special sprinklers according to the needs of crops. There are many types of water quality used as micro-irrigation water sources. Sandy water is a common form of water quality. However, if the sandy water is not strictly purified and filtered, it will cause serious blockage of the sprinkler and may even cause the entire micro-irrigation system to be paralyzed or even scrapped.

[0003] In the prior art, the filtration of sand-containing water mainly relies on centrifugal screen combination filters, but this filter needs to rely on pipes to connect the various components, which will increase the number of connectors and elbows. In addition, due to the multi-branch pipe structure formed by the grouping of the filtering equipment, the hydraulic loss of the system will increase, thereby increasing the overall weight and cost of the equipment, and the equipment installation occupies a large space, and the installation and use are cumbersome. Summary of the invention

[0004] In view of the above defects or deficiencies in the prior art, the present application aims to provide a micro-irrigation water filtering device, comprising:

[0005] A filter tank body, wherein the filter tank body has a first space, a water inlet is provided on the side wall of the filter tank body, the axis of which is tangent to the side wall of the filter tank body, the water inlet inputs water to be filtered into the first space at a preset flow rate, and a water outlet is provided on the top of the filter tank body;

[0006] A filter assembly, wherein the filter assembly is disposed in the first space, and the first space is communicated with the water outlet through the filter assembly; the filter assembly at least comprises a hollow filter element, and the inside of the filter element is communicated with the first space;

[0007] A sewage discharge component is arranged in the filter element, and the sewage discharge component at least includes a plurality of sewage suction ports close to the inner wall of the filter element, and the sewage suction ports are used to suck out impurities attached to the inner wall of the filter element.

[0008] According to the technical solution provided in the embodiment of the present application, the filter tank body includes a cylindrical portion and a conical portion connected to the cylindrical portion, the water inlet is arranged on the cylindrical portion, and the water outlet is arranged on the side of the cylindrical portion away from the conical portion.

[0009] According to the technical solution provided in the embodiment of the present application, the conical portion is connected to an end away from the cylindrical portion and is provided with a sewage storage tank.

[0010] According to the technical solution provided in the embodiment of the present application, the filter assembly also includes a first shell, a second space is provided between the first shell and the filter element, and a third space connected to the water outlet is also provided in the first shell, and the third space is connected to the second space.

[0011] According to the technical solution provided in the embodiment of the present application, a sewage collecting tank is provided in the third space, a sewage collecting cavity is provided in the sewage collecting tank, and the sewage collecting cavity is connected to the sewage suction port.

[0012] According to the technical solution provided in the embodiment of the present application, the sewage discharge component includes a sewage main pipe coaxially arranged with the first shell and connected to the sewage collecting cavity, and a plurality of staggered sewage auxiliary pipes are vertically connected to the sewage main pipe, and the end of the sewage auxiliary pipe away from the sewage main pipe is the sewage suction port.

[0013] According to the technical solution provided in the embodiment of the present application, a rotary spray pipe is provided in the sewage collecting chamber, the rotary spray pipe is connected to the sewage main pipeline, and the rotary spray pipe is used to drive the sewage discharge component to rotate around the axis direction of the first shell.

[0014] According to the technical solution provided in the embodiment of the present application, a sewage discharge pipe is provided on the sewage collecting tank body, and the sewage discharge pipe is used to discharge the sewage in the sewage collecting cavity.

[0015] According to the technical solution provided in the embodiment of the present application, a first switch is provided on the sewage pipe, and the first switch has a first state and a second state. When the first switch is in the first state, the sewage collecting cavity is connected to the outside atmosphere, and when the first switch is in the second state, the sewage collecting cavity is blocked from the outside atmosphere.

[0016] According to the technical solution provided in the embodiment of the present application, the filter assembly includes a first transverse plate, and the cavity between the first transverse plate and the sewage collecting tank is the sewage collecting cavity; the first transverse plate outside the sewage collecting cavity is provided with a plurality of first overflow holes for connecting the second space and the third space.

[0017] In summary, the present application proposes a micro-irrigation water filtration device, comprising a filter tank body, the filter tank body having a first space, a water inlet being arranged on the side wall of the filter tank body, the axial direction of the water inlet being tangent to the side wall of the filter tank body, and a water outlet being arranged on the top of the filter tank body; a filter assembly is arranged in the first space, and is arranged at a height higher than the water inlet, the first space is connected with the water outlet through the filter assembly; the filter assembly at least comprises a hollow filter element, and the inside of the filter element is connected with the first space; a sewage discharge assembly is arranged in the filter element, and the sewage discharge assembly at least comprises a plurality of sewage suction ports close to the inner wall of the filter element, for sucking out impurities attached to the inner wall of the filter element.

[0018] Compared with the prior art, the beneficial effect of the present application is that: by pouring the water to be filtered into the first space along the tangent direction of the filter tank body, the sand and gravel impurities in the water to be filtered will sink due to gravity, and the water after the preliminary filtration of the sand and gravel will surge upward in the first space, and after pouring into the filter component, it will be filtered again through the filter element, and cleaner micro-irrigation water will be output from the water outlet. The filter component is arranged in the first space, which reduces the number of connecting pipes and reduces hydraulic losses. The equipment installation occupies a small space, is light in weight, and is quick to install and use; and the sewage discharge component arranged in the filter element can also absorb sewage when there are excessive impurities attached to the filter element, thereby improving the self-cleaning ability of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional schematic diagram of a micro-irrigation water filtration device provided in an embodiment of the present application;

[0020] Figure 2 A cross-sectional schematic diagram of a filter assembly provided in an embodiment of the present application.

[0021] The text annotations in the figure represent:

[0022] 1. Filter tank body; 2. Water inlet; 3. Water outlet; 4. Third space; 5. Second space; 6. Filter element; 61. Second overflow hole; 7. Auxiliary sewage pipe; 71. Sewage suction port; 8. Main sewage pipe; 9. Rotary spray pipe; 10. Sewage pipe; 11. Sewage collecting tank body; 12. First switch; 13. First horizontal plate; 14. First shell; 15. Sealing pipe cap; 16. Sewage storage tank; 17. Cylindrical part; 18. Conical part. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] As mentioned in the background technology, in view of the problems in the prior art, this application proposes a micro-irrigation water filtration device, please refer to Figure 1 As shown, including:

[0026] A filter tank body 1, wherein the filter tank body 1 has a first space therein, a water inlet 2 is provided on the side wall of the filter tank body 1, and the axis is tangent to the side wall of the filter tank body 1, and the water inlet 2 inputs water to be filtered into the first space at a preset flow rate, and a water outlet 3 is provided on the top of the filter tank body 1;

[0027] Specifically, the filter tank body 1 is a centrifugal filter tank body 1. Optionally, the axial direction of the water inlet 2 is tangent to the side wall of the filter tank body 1. Since the water flow enters the first space tangentially, a vortex can be formed in the first space. The centrifugal force of the water flow is used to accelerate the sedimentation of solid particles and strengthen the separation. The flow characteristics of the fluid present a special three-dimensional strong rotational shear turbulent motion, which is composed of two basic rotating liquid flows: one is an outer vortex moving downward along the spiral line, and the other is an inner vortex moving upward along the spiral line. The two rotating flows have the same rotation direction, but the axial movement direction is opposite.

[0028] During actual operation, the water to be filtered enters the filter tank body 1 tangentially from the water inlet 2. Due to the rotation, an external vortex is generated. The centrifugal force pushes the silt and solid particles with higher density to the inner wall of the filter tank body 1, and flows downward along the filter tank body 1 under the action of gravity.

[0029] A filter assembly, the filter assembly is disposed in the first space, the first space is communicated with the water outlet 3 through the filter assembly; the filter assembly at least comprises a hollow filter element 6, the inside of the filter element 6 is communicated with the first space;

[0030] Optionally, the filter assembly is a metal powder sintered filter, and the filter element 6 has a first annular mounting portion on the side away from the water outlet 3. The first mounting portion is mounted on the first shell 14 through a flange, and the other end of the filter element 6 is against the first cross plate 13. There is a certain space between the filter element 6 and the inner wall of the first shell 14.

[0031] Specifically, the filter assembly is disposed at the top of the first space and installed on the top plate of the filter tank body 1. The preliminarily purified water after the separation of sand and water rotates upward into the hollow filter element 6 under the action of the internal vortex.

[0032] Furthermore, the filter element 6 is made of metal powder as raw material, which is formed by static pressure and then sintered by high-temperature vacuum.

[0033] A sewage discharge component is arranged in the filter element 6 , and the sewage discharge component at least includes a plurality of sewage suction ports 71 close to the inner wall of the filter element 6 , and the sewage suction ports 71 are used to suck out impurities attached to the inner wall of the filter element 6 .

[0034] Specifically, the inner wall of the filter element 6 is a side wall away from the first shell 14. When the water to be filtered enters the filter element 6, solid impurities will remain on the inner wall of the filter element 6. The water filtered by the filter element 6 enters the space between the filter element 6 and the first shell 14. The filter element 6 will have too many impurities attached to the inner wall after long-term use. These impurities will affect the filtering effect of the filter element 6, so the impurities need to be removed.

[0035] Furthermore, a sewage discharge assembly is provided in the hollow filter element 6, through which one end of a plurality of sewage suction ports 71 is close to the inner wall of the filter element 6. When the other end of the sewage suction port 71 is not connected to the outside atmosphere, the sewage suction port 71 does not suck sewage. When the other end of the sewage suction port 71 is connected to the outside atmosphere, impurities on the inner wall of the filter element 6 are sucked away by the sewage suction port 71 due to the pressure difference.

[0036] In a preferred embodiment, the filter tank body 1 includes a cylindrical portion 17 and a conical portion 18 connected to the cylindrical portion 17 , the water inlet 2 is provided on the cylindrical portion 17 , and the water outlet 3 is provided on the side of the cylindrical portion 17 away from the conical portion 18 .

[0037] Specifically, the bottom of the filter tank body 1 is a conical portion 18 , which can be more conducive to the sand and gravel impurities sliding down and depositing along the inner wall of the filter tank body 1 .

[0038] In a preferred embodiment, the conical portion 18 is connected to an end away from the cylindrical portion 17 and is provided with a sewage storage tank 16 .

[0039] Specifically, the sewage tank 16 is used to store sand and gravel impurities sliding down from the conical portion 18. The sewage tank 16 is also provided with a sewage discharge valve. When the sewage discharge valve is opened, the sand and gravel impurities in the sewage tank 16 can be cleared. The sewage tank 16 is fixed by a bracket.

[0040] In a preferred embodiment, the filter assembly further includes a first shell 14 , a second space 5 is defined between the first shell 14 and the filter element 6 , and a third space 4 connected to the water outlet 3 is defined in the first shell 14 , and the third space 4 is connected to the second space 5 .

[0041] In a preferred embodiment, the filter assembly includes a first transverse plate 13, and the cavity between the first transverse plate 13 and the sewage collecting tank 11 is the sewage collecting cavity; the first transverse plate 13 outside the sewage collecting cavity is provided with a plurality of first overflow holes for connecting the second space 5 and the third space 4.

[0042] Specifically, please refer to Figure 2As shown, the first shell 14 includes a mounting sleeve outside the filter assembly, and the bottom of the mounting sleeve has a second overflow hole 61. Water filtered by centrifugation will flow into the hollow filter element 6 from the second overflow hole 61; a circle of annular second space 5 is provided between the first shell 14 and the filter element 6, and the second space 5 is not connected with the first space. The water passing through the filter element 6 can be used as micro-irrigation water. The micro-irrigation water flows in the second space 5. Since the second space 5 is connected with the third space 4, the micro-irrigation water in the second space 5 gradually overflows into the third space 4 through the first overflow hole, and is then output from the water outlet 3.

[0043] Furthermore, three first overflow holes are provided. It should be noted that since the cross-section position in the figure is not at the setting position of the first overflow hole, the first overflow hole cannot be reflected.

[0044] In a preferred embodiment, a sewage collecting tank 11 is disposed in the third space 4 . The sewage collecting tank 11 has a sewage collecting cavity therein. The sewage collecting cavity is communicated with the sewage suction port 71 .

[0045] Specifically, the impurities attached to the inner wall of the filter element 6 are sucked away by the sewage suction port 71 and flow into the sewage collecting cavity, and the sewage collecting cavity is used to collect sewage.

[0046] In a preferred embodiment, the sewage discharge component includes a sewage main pipe 8 coaxially arranged with the first shell 14 and connected to the sewage collecting cavity, and a plurality of staggered sewage auxiliary pipes 7 are vertically connected to the sewage main pipe 8, and the end of the sewage auxiliary pipe 7 away from the sewage main pipe 8 is the sewage suction port 71.

[0047] Specifically, the number of the sewage secondary pipes 7 can be determined by the height of the filter element 6, and the opening of the sewage secondary pipe 7 is the sewage suction port 71, which is very close to the inner wall of the filter element 6 but does not touch it. Furthermore, the port of the sewage main pipe 8 close to the first space side is blocked by a blocking pipe cap 15, and the sewage assembly is fixed by the bearing and shaft seal provided at the end of the sewage main pipe 8 close to the first space, and fixed on the first horizontal plate 13 away from the first space.

[0048] In a preferred embodiment, a rotary spray pipe 9 is provided in the sewage collecting chamber, and the rotary spray pipe 9 is connected to the sewage discharge main pipe 8 . The rotary spray pipe 9 is used to drive the sewage discharge component to rotate around the axis direction of the first shell 14 .

[0049] Specifically, the rotary spray pipe 9 is a hydraulic rotary spray pipe 9, which is connected to the sewage main pipe 8 away from the blocking pipe cap 15. When water flows out of the hydraulic rotary spray pipe 9, it will spray in all directions, forming a vortex in the third space 4, and this vortex will drive the entire sewage discharge assembly to rotate.

[0050] In a preferred embodiment, a sewage discharge pipe 10 is provided on the sewage collecting tank 11, and the sewage discharge pipe 10 is used to discharge the sewage in the sewage collecting cavity.

[0051] In a preferred embodiment, a first switch 12 is provided on the sewage pipe 10, and the first switch 12 has a first state and a second state. When the first switch 12 is in the first state, the sewage collecting chamber is connected to the outside atmosphere, and when the first switch 12 is in the second state, the sewage collecting chamber is blocked from the outside atmosphere.

[0052] Specifically, the first switch 12 is an electric valve, and the first switch 12 is arranged on the side of the sewage pipe 10 away from the filter tank 1. The first switch 12 is controlled by the controller to switch between the first state and the second state. Further, after the water flows through the filter element 6 of a certain precision, the impurities are blocked by the inner wall of the filter element 6, the clean water flows out through the filter element 6, and the silt impurities are attached to the inner wall of the filter element 6, and a pressure difference is formed on both sides of the inner and outer walls of the filter element 6. When the pressure difference reaches a predetermined value, the controller controls the first switch 12 to switch to the first state. At this time, the sewage pipe 10, the sewage collection cavity, the sewage main pipeline 8, and the sewage auxiliary pipeline 7 are connected to the outside atmosphere. The pressure difference formed between the internal water pressure of the filter and the external atmosphere will cause the sewage suction port 71 to generate a strong suction force. At the same time, since the water flow velocity near the sewage suction port 71 is very large, the high-speed flowing water will also wash the silt impurities on the inner wall of the filter element 6 down and enter the sewage suction port 71. In this way, under the dual effects of strong suction and high-speed water flow, the sand and impurities on the inner wall of the filter element 6 can be effectively sucked away, and the sewage mixed with the sucked sand and impurities enters the sewage secondary pipe 7, the sewage main pipe 8, and then enters the hydraulic rotary spray pipe 9, driving the hydraulic rotary spray pipe 9 to drive the sewage main pipe 8 and the sewage secondary pipe 7 to rotate, and then the displaced suction port 71 sucks away the impurities on the inner wall of the filter element 6 in circles, and the suction port 71 can cover the entire inner wall of the filter element 6 by rotating. The sucked impurities are mixed with water and discharged through the sewage outlet of the sewage pipe 10.

[0053] Furthermore, during the rotation of the sewage discharge assembly, each sewage suction port 71 will suck in the sediment on the inner wall of the filter screen within the range, and discharge it through the sewage discharge pipe 10 with the water flow and the hydraulic rotary spray pipe 9. As the sediment on the inner wall of the filter element 6 is discharged, the pressure difference between the inside and outside of the filter element 6 will gradually decrease. When the pressure difference is lower than the predetermined value, the self-cleaning of the filter element 6 is completed, the controller will control the first switch 12 to switch to the second state, the hydraulic rotary spray pipe 9 will no longer spray, the sewage discharge assembly stops rotating, the filter element 6 is automatically cleaned and can be used continuously.

[0054] Furthermore, when the pressure difference does not reach the predetermined value, the first switch 12 is in the second state. At this time, since the sewage pipe 10 is not connected to the outside atmosphere, no pressure difference is formed, the sewage discharge component does not perform sewage suction action, and the entire filtering component only performs water filtering action.

[0055] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A micro-irrigation water filtration device, characterized in that: include: A filter tank body (1), wherein the filter tank body (1) has a first space therein, a water inlet (2) is provided on a side wall of the filter tank body (1) and the axis is tangent to the side wall of the filter tank body (1), the water inlet inputs water to be filtered into the first space at a preset flow rate, and a water outlet (3) is provided on the top of the filter tank body (1); A filter assembly, the filter assembly being arranged in the first space, the first space being in communication with the water outlet (3) through the filter assembly; the filter assembly at least comprising a hollow filter element (6), the interior of the filter element (6) being in communication with the first space; A sewage discharge component, the sewage discharge component is arranged in the filter element (6), the sewage discharge component comprises at least a plurality of sewage suction ports (71) close to the inner wall of the filter element (6), the sewage suction ports (71) being used to suck out impurities attached to the inner wall of the filter element (6).

2. The micro-irrigation water filtration device according to claim 1, characterized in that: The filter tank body (1) comprises a cylindrical portion (17) and a conical portion (18) connected to the cylindrical portion (17), the water inlet (2) is arranged on the cylindrical portion (17), and the water outlet (3) is arranged on a side of the cylindrical portion (17) away from the conical portion (18).

3. The micro-irrigation water filtration device according to claim 2, characterized in that: The conical portion (18) is connected to a sewage storage tank (16) at an end away from the cylindrical portion (17).

4. The micro-irrigation water filter device according to claim 1, characterized in that: The filter assembly further comprises a first shell (14), a second space (5) is provided between the first shell (14) and the filter element (6), the first shell (14) further comprises a third space (4) in communication with the water outlet (3), and the third space (4) is in communication with the second space (5).

5. The micro-irrigation water filtration device according to claim 4, characterized in that: A sewage collecting tank (11) is provided in the third space (4), wherein the sewage collecting tank (11) has a sewage collecting cavity, and the sewage collecting cavity is in communication with the sewage suction port (71).

6. The micro-irrigation water filtering device according to claim 5, characterized in that: The sewage discharge assembly comprises a sewage discharge main pipe (8) coaxially arranged with the first shell (14) and connected to the sewage collecting cavity; a plurality of staggered sewage discharge auxiliary pipes (7) are vertically connected to the sewage discharge main pipe (8); the end of the sewage discharge auxiliary pipe (7) away from the sewage discharge main pipe (8) is the sewage suction port (71).

7. The micro-irrigation water filtering device according to claim 6, characterized in that: A rotary spray pipe (9) is provided in the sewage collecting cavity, the rotary spray pipe (9) is connected to the sewage discharge main pipe (8), and the rotary spray pipe (9) is used to drive the sewage discharge component to rotate around the axis direction of the first shell (14).

8. The micro-irrigation water filtration device according to claim 5, characterized in that: The sewage collecting tank (11) is provided with a sewage discharge pipe (10), and the sewage discharge pipe (10) is used to discharge sewage in the sewage collecting cavity.

9. The micro-irrigation water filtration device according to claim 8, characterized in that: The sewage discharge pipe (10) is provided with a first switch (12), the first switch (12) having a first state and a second state, when the first switch (12) is in the first state, the sewage collection chamber is connected to the outside atmosphere, and when the first switch (12) is in the second state, the sewage collection chamber is blocked from the outside atmosphere.

10. The micro-irrigation water filtering device according to claim 8, characterized in that: The filter assembly comprises a first transverse plate (13); a cavity between the first transverse plate (13) and the sewage collecting tank (11) is the sewage collecting cavity; and a plurality of first overflow holes for connecting the second space (5) and the third space (4) are provided on the first transverse plate (13) outside the sewage collecting cavity.

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