A non-powered self-draining filtration system

Abstract

The present invention discloses a non-powered self-draining sewage filtering system, which relates to the technical field of liquid filtration, and aims to solve the problems of complex structure, high operating cost and low applicability of the self-cleaning scheme of the filtering system in the prior art. The system comprises a filter tank, a delivery pump, a liquid storage tank, a filter element, a rotating sleeve, a scraper ring and a plug cylinder. The plug cylinder can be inserted into the filter element to seal the filter element. The filter tank is rotatably connected with a rotating sleeve and slidably connected with a scraper ring. The liquid storage tank is arranged above the filter tank. When performing self-cleaning and sewage discharge, the present invention utilizes liquid with gravitational potential energy to insert the plug cylinder into the filter element, and then controls the valve to switch the pipeline so that the liquid with high turbidity degree outside the filter element is discharged from the sewage pipe, thereby realizing efficient automatic cleaning. After the cleaning is completed, the pipeline can be switched to automatically reset the components, so that the filtering system can work normally. The system is simple to operate and easy to maintain, with small space restrictions, thereby extending the service life of the filtering system and improving its working stability and efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of liquid filtration, and in particular to an unpowered self-draining sewage filtration system. Background Art

[0002] In the field of water treatment and fluid purification, filtration systems are widely used in industrial production, civil water purification and other scenarios. Traditional filtration systems often require regular manual cleaning or power-assisted cleaning due to the accumulation of pollutants during long-term use. This cleaning operation often involves complex disassembly and assembly steps, which takes a lot of time and manpower, and may cause additional mechanical stress and risks to the system, affecting the system's working stability and service life. This not only increases the maintenance workload of the filtration system, but may also cause equipment damage or reduced efficiency due to improper operation. The cleaning process may also cause environmental pollution and increase the operating and maintenance costs of the filtration system. Regular manual cleaning or backwashing is often required to remove impurities attached to the filter elements.

[0003] In the prior art, although a variety of automatic cleaning technologies have been proposed and applied, these solutions usually rely on external power sources or complex control systems, which increases the complexity and operating costs of the system. At the same time, they may not be applicable to certain specific environmental conditions such as space limitations, insufficient power supply, etc.

[0004] In summary, the development of an unpowered self-cleaning filtration system that can effectively reduce operating costs, improve self-cleaning efficiency and is easy to operate has important practical significance and market potential.

[0005] Therefore, the present application provides a non-powered self-draining filtration system to meet the needs. Summary of the invention

[0006] The purpose of this application is to provide a non-powered self-draining filtration system, which, through innovative design and structure, can achieve automatic cleaning and drainage without the need for an additional power source, thereby simplifying the operation and maintenance process of the system, improving the filtration efficiency and reliability of the system, being suitable for various environmental conditions, and effectively solving the problems of inconvenient cleaning and environmental impact existing in the prior art.

[0007] To achieve the above purpose, the present application provides the following technical solution, a non-powered self-draining filtration system, comprising:

[0008] The filter tank has an upper cover on the top and a bottom cover on the bottom. A filter element is installed between the upper cover and the bottom cover. The top of the filter element is transparent, the bottom of the filter element is sealed, and a gap is left between the outer wall of the filter element and the inner wall of the filter tank. A vertical cylinder is provided on the upper cover, a liquid outlet pipe is provided on the upper part of the side wall of the vertical cylinder, a top cover is provided on the top of the vertical cylinder, a reflux pipe is provided on the top cover, a plug cylinder is slidably connected in the vertical cylinder, and the plug cylinder is slidably connected to the inner circumference of the filter element. The plug barrel has a flow cavity inside, and the upper part of the side wall of the plug barrel has a liquid outlet hole connected with the flow cavity. The liquid outlet hole is matched with the liquid outlet pipe. The bottom of the plug barrel has a lower flow hole, and the top of the plug barrel has an upper flow hole. The lower flow hole can be closed to drive the plug barrel to move downward, and the upper flow hole can be closed to drive the plug barrel to move upward. The upper part of the side wall of the filter tank is provided with a cleaning pipe and a reflux pipe, and the bottom of the bottom cover is provided with a functional pipe;

[0009] A delivery pump, wherein the water outlet of the delivery pump is connected to a delivery pipe, and a front three-way valve, a lower three-way piece and a rear three-way valve are sequentially arranged on the delivery pipe from front to back, wherein the front three-way valve is connected to the cleaning pipe, and the lower three-way piece is connected to the return pipe, and a one-way valve is arranged on the return pipe, and the flow direction of the one-way valve is from top to bottom, and the rear three-way valve is connected to the sewage pipe and the functional pipe;

[0010] A liquid storage tank is arranged above the vertical cylinder, an output pipe is provided on the upper part of the side wall of the liquid storage tank, an emptying pipe is provided at the bottom of the liquid storage tank, the emptying pipe is connected to the liquid outlet pipe and the reflux pipe through a top tee, and a solenoid valve is provided at the bottom end of the emptying pipe.

[0011] Preferably, a docking seat is provided at the bottom of the upper cover, and the docking seat is a cylindrical body that is transparent from top to bottom. The inner diameter of the docking seat is the same as that of the vertical cylinder, and the bottom of the docking seat is docked with the top of the filter element. The outside of the docking seat is rotatably connected with a rotating sleeve, and a leaf disc is provided on the bottom outer wall of the rotating sleeve. The outer edge of the leaf disc is slidably connected to the inner wall of the filter tank, and blades and through holes are evenly and vertically arranged on the leaf disc. The blades have multiple groups and are arranged along the radial direction of the leaf disc. The blades correspond to the height positions of the cleaning pipe and the reflux pipe. The through holes have multiple groups and are all located between adjacent blades. Vertical guide rods are evenly and vertically provided at the bottom of the leaf disc, and vertical scraping strips are provided on the vertical guide rods. The vertical scraping strips are slidably connected to the outer wall of the filter element.

[0012] Preferably, a scraper ring is provided on the outer sleeve of the filter element, and the scraper ring is located below the blade disk. The outer wall of the scraper ring is slidably connected to the inner wall of the filter tank. The scraper ring is provided with a slide groove, and the slide grooves have multiple groups and are compatible with the vertical guide rods. The inner wall of the scraper ring is provided with a horizontal scraper strip, and the horizontal scraper strip is slidably connected to the outer wall of the filter element.

[0013] Preferably, a support seat is provided on the bottom cover, and the bottom of the support seat is connected to the bottom cover through a pillar, and the pillars have multiple groups and are evenly distributed. The support seat is located above the functional tube, and the top of the support seat abuts against the bottom surface of the filter element. The support seat matches the size of the filter element, and the bottom end of the vertical guide rod is connected to an end ring, which is slidably connected to the outside of the support seat, and the height of the pillar is greater than the thickness of the end ring.

[0014] Preferably, a docking groove is provided on the bottom surface of the docking seat, a docking ring is provided on the top of the filter element, the docking ring is matched with the docking groove, a positioning block is provided on the bottom of the filter element, a positioning groove is provided on the top surface of the support seat, and the positioning block is matched with the positioning groove.

[0015] Preferably, a pressure ring is provided at the bottom of the scraper ring, and the pressure ring is used to fill the space between the scraper ring and the bottom cover when the scraper ring is in a low position. A cavity is provided inside the pressure ring, and the cavity is annular and evenly arranged, and the cavity is used to reduce the weight of the pressure ring.

[0016] Preferably, a lower baffle is provided at the top of the lower flow hole, the lower baffle is hinged to one side of the lower flow hole and can cover the lower flow hole, and an upper baffle is provided at the bottom of the upper flow hole, the upper baffle is hinged to one side of the upper flow hole and can cover the upper flow hole.

[0017] Preferably, the side wall of the plug cylinder is provided with a through guide groove, the vertical cylinder is provided with a guide bar, the guide bar is adapted to the guide groove, and the top surface of the plug cylinder is provided with a magnet block, and the magnet block is used to adsorb the top cover.

[0018] Preferably, the liquid storage tank is provided with a concave tank cover, and the tank cover is provided with a breathing valve.

[0019] In summary, the technical effects and advantages of the present invention are as follows:

[0020] The utility model discloses the present invention can be used for self-cleaning and sewage discharge, and the plug cylinder is inserted into the filter element through the liquid with gravitational potential energy in the liquid storage tank, so that the liquid therein can flow back to the filter element for backwashing, and the filter element can be closed, and then the pipeline is switched by controlling the valve, so that the liquid with high turbidity degree on the outside of the filter element can be discharged from the sewage pipe, so as to realize efficient automatic cleaning, greatly reduce the workload of manual maintenance, and reduce the operation and maintenance cost. After the cleaning is completed, the pipeline is switched, and the pressure difference between the inside and outside of the filter element is cleverly used to lift and move the plug cylinder upward, so that the filtering system can work normally. The whole process does not need direct intervention of the operator, and the operation is simple and convenient for maintenance. It also has the characteristics of small space restriction and no need for power distribution, etc., which significantly prolongs the service life of the filtering system, improves its working stability and efficiency, and also reduces environmental pollution. It is an ideal fluid purification solution.

[0021] In the present invention, the docking seat at the bottom of the upper cover is docked with the top of the filter element, and the leaf disk at the bottom of the rotating sleeve is slidably connected with the inner wall of the filter tank at the outer edge. The liquid flow in the cleaning pipe is used to drive the blades on the leaf disk to rotate, thereby driving the vertical guide rods and vertical scrapers to effectively remove impurities attached to the outer wall of the filter element, thereby enhancing the cleaning effect of the filter element. This design is not only simple to operate and has low operating costs, but also effectively improves the self-cleaning efficiency.

[0022] The present invention provides a scraper ring which is lifted and lowered along the filter element, and utilizes the pressure difference between the upper and lower sides of the scraper ring after the pipeline is switched to drive the scraper ring to lift and move. On the one hand, the horizontal scraper bar is utilized to scrape away impurities attached to the surface of the filter element to optimize the cleaning effect of the filter element. On the other hand, the liquid mixed with impurities under the scraper ring can be pushed downward and discharged from the sewage pipe to improve the sewage discharge efficiency. After the sewage discharge is completed, the scraper ring is reset by the pressure of the liquid flow after the pipeline is restored. The structure is simple and effective, which can further improve the self-cleaning efficiency and enhance the self-cleaning effect of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the filter tank of the present invention;

[0026] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0027] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure at B;

[0028] Figure 5 It is a schematic diagram of the upper cover structure of the present invention;

[0029] Figure 6 It is a schematic diagram of the bottom cover structure of the present invention;

[0030] Figure 7 It is a schematic diagram of the rotating sleeve structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the scraper ring structure of the present invention;

[0032] Fig. 9 It is a schematic diagram of the plug structure of the present invention.

[0033] In the figure:

[0034] 1. Filter tank; 2. Delivery pump; 3. Liquid storage tank; 4. Filter element; 5. Rotating sleeve; 6. Scraper ring; 7. Plug cylinder;

[0035] 10. Upper cover; 11. Top cover; 12. Bottom cover; 101. Vertical cylinder; 102. Liquid outlet pipe; 103. Docking seat; 104. Guide bar; 111. Reflux pipe; 121. Functional pipe; 122. Support seat; 123. Positioning groove;

[0036] 20. Delivery pipe; 21. Front three-way valve; 22. Cleaning pipe; 23. Reflux pipe; 24. Check valve; 25. Rear three-way valve; 26. Drain pipe;

[0037] 30. Output pipe; 31. Exhaust pipe; 32. Solenoid valve; 33. Breathing valve;

[0038] 40. Docking ring;

[0039] 50. blisk; 51. blade; 52. through hole; 53. vertical guide rod; 54. vertical scraper strip; 55. end ring;

[0040] 60. slide groove; 61. pressure ring; 62. cavity; 63. horizontal scraper;

[0041] 70. Liquid outlet hole; 71. Lower flow hole; 72. Lower baffle; 73. Upper flow hole; 74. Upper baffle; 75. Magnet block; 76. Guide groove. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example: Reference Figure 1-9 The unpowered self-draining filtration system shown includes a filter tank 1, a delivery pump 2, and a liquid storage tank 3:

[0044] The top of the filter tank 1 is provided with an upper cover 10, the bottom of the filter tank 1 is provided with a bottom cover 12, a filter element 4 is installed between the upper cover 10 and the bottom cover 12, the top of the filter element 4 is transparent, the bottom of the filter element 4 is sealed, a gap is left between the outer wall of the filter element 4 and the inner wall of the filter tank 1, a vertical cylinder 101 is provided on the upper cover 10, a liquid outlet pipe 102 is provided on the upper part of the side wall of the vertical cylinder 101, a top cover 11 is provided on the top of the vertical cylinder 101, a reflux pipe 111 is provided on the top cover 11, a plug cylinder 7 is slidably connected in the vertical cylinder 101, and the plug cylinder 7 can be inserted into the filter element 4 to seal the filter element 4. Closed, a flow cavity is provided in the plug barrel 7, a liquid outlet hole 70 is provided on the upper part of the side wall of the plug barrel 7 to communicate with the flow cavity, the liquid outlet hole 70 is adapted to the liquid outlet pipe 102, a lower flow hole 71 is provided at the bottom of the plug barrel 7, an upper flow hole 73 is provided on the top of the plug barrel 7, the lower flow hole 71 can be closed, driving the plug barrel 7 to move downward, the upper flow hole 73 can be closed, driving the plug barrel 7 to move upward, a cleaning pipe 22 and a reflux pipe 23 are provided on the upper part of the side wall of the filter tank 1, and a functional pipe 121 is provided at the bottom of the bottom cover 12, which can achieve multiple functions according to the effect of pipeline switching;

[0045] The water outlet of the delivery pump 2 is connected to a delivery pipe 20, on which a front three-way valve 21, a lower three-way piece and a rear three-way valve 25 are arranged in sequence from front to back. The front three-way valve 21 is connected to a cleaning pipe 22, and the lower three-way piece is connected to a return pipe 23. A check valve 24 is arranged on the return pipe 23, and the flow direction of the check valve 24 is from top to bottom. The rear three-way valve 25 is connected to a sewage pipe 26 and a functional pipe 121;

[0046] The liquid storage tank 3 is arranged above the vertical cylinder 101, and an output pipe 30 is provided on the upper part of the side wall of the liquid storage tank 3. An emptying pipe 31 is provided at the bottom of the liquid storage tank 3. The emptying pipe 31 connects the liquid outlet pipe 102 and the reflux pipe 111 through a top tee piece, and a solenoid valve 32 is provided at the bottom end of the emptying pipe 31.

[0047] As an implementation method in this embodiment, in order to enhance the effect of cleaning the filter element 4 by using the cleaning tube 22, as shown in FIG. Figures 1 to 3 , Figure 7As shown, a docking seat 103 is provided at the bottom of the upper cover 10. The docking seat 103 is a cylindrical body that is transparent from top to bottom. The inner diameter of the docking seat 103 is the same as that of the vertical cylinder 101. The bottom of the docking seat 103 is docked with the top of the filter element 4. The outside of the docking seat 103 is rotatably connected with a rotating sleeve 5. A leaf disk 50 is provided on the bottom outer wall of the rotating sleeve 5. The outer edge of the leaf disk 50 is slidably connected to the inner wall of the filter tank 1. Blades 51 and through holes 52 are evenly and vertically arranged on the leaf disk 50. The blades 51 are in multiple groups and are arranged along the radial direction of the leaf disk 50. The blades 51 correspond to the height positions of the cleaning pipe 22 and the reflux pipe 23. There are multiple groups of through holes 52 and they are all located between adjacent blades 51. Vertical guide rods 53 are evenly and vertically arranged at the bottom of the leaf disk 50. Vertical scraping strips 54 are provided on the vertical guide rods 53. The vertical scraping strips 54 are slidably connected to the outer wall of the filter element 4.

[0048] As an implementation method in this embodiment, in order to further enhance the cleaning effect of the filter element 4 and improve the sewage discharge efficiency, as Figure 2 , Figure 3 , Figure 7 , Figure 8 As shown, a scraper ring 6 is provided on the outside of the filter element 4, and the scraper ring 6 is located below the blade disk 50. The outer wall of the scraper ring 6 is slidably connected to the inner wall of the filter tank 1. The scraper ring 6 is provided with a slide groove 60. The slide groove 60 has multiple groups and is compatible with the vertical guide rod 53. The inner wall of the scraper ring 6 is provided with a horizontal scraper strip 63, and the horizontal scraper strip 63 is slidably connected to the outer wall of the filter element 4.

[0049] As an implementation method in this embodiment, in order to enhance the stability of the filter element 4 and ensure the sewage discharge efficiency, Figure 2 , Figure 6 As shown, a support seat 122 is provided on the bottom cover 12, and the bottom of the support seat 122 is connected to the bottom cover 12 through a pillar. There are multiple groups of pillars and they are evenly distributed. The support seat 122 is located above the functional tube 121, and the top of the support seat 122 abuts against the bottom surface of the filter element 4. The size of the support seat 122 matches that of the filter element 4. The bottom end of the vertical guide rod 53 is connected to an end ring 55, and the end ring 55 is slidably connected to the outside of the support seat 122, and the height of the pillar is greater than the thickness of the end ring 55.

[0050] As an implementation method in this embodiment, in order to facilitate the positioning when installing the filter element 4, as shown in FIG. Figures 2 to 6 As shown, a docking groove is provided on the bottom surface of the docking seat 103, a docking ring 40 is provided on the top of the filter element 4, the docking ring 40 is matched with the docking groove, a positioning block is provided on the bottom of the filter element 4, and a positioning groove 123 is provided on the top surface of the support seat 122, and the positioning block is matched with the positioning groove 123.

[0051] As an implementation method in this embodiment, in order to fully discharge the dirty liquid outside the filter element 4 and facilitate driving the pressure ring 61 to move, as shown in FIG. Figure 2 , Figure 3As shown, a pressure ring 61 is provided at the bottom of the scraper ring 6. The pressure ring 61 is used to fill the space between the scraper ring 6 and the bottom cover 12 when the scraper ring 6 is in a low position. A cavity 62 is provided in the pressure ring 61. The cavity 62 is annular and evenly arranged. The cavity 62 is used to reduce the weight of the pressure ring 61.

[0052] As an implementation method in this embodiment, in order to achieve the effect of adjusting the position of the plug cylinder 7 according to the flow direction of the liquid, as shown in FIG. Figures 2 to 4 As shown, a lower baffle 72 is provided at the top of the lower flow hole 71, the lower baffle 72 is hinged to one side of the lower flow hole 71 and the lower baffle 72 can cover the lower flow hole 71, and an upper baffle 74 is provided at the bottom of the upper flow hole 73, the upper baffle 74 is hinged to one side of the upper flow hole 73 and the upper baffle 74 can cover the upper flow hole 73.

[0053] As an implementation method in this embodiment, in order to facilitate the alignment of the liquid outlet hole 70 and the liquid outlet pipe 102, as shown in FIG. Figure 5 , Fig. 9 As shown, the side wall of the plug cylinder 7 is provided with a through guide groove 76 , the vertical cylinder 101 is provided with a guide bar 104 , the guide bar 104 is adapted to the guide groove 76 , and the top surface of the plug cylinder 7 is provided with a magnet block 75 , which is used to adsorb the top cover 11 .

[0054] As an implementation method in this embodiment, in order to maintain the pressure balance in the liquid storage tank 3, as Figure 1 As shown, the liquid storage tank 3 is provided with a concave tank cover, and a breathing valve 33 is provided on the tank cover.

[0055] Working principle of the present invention: when the system is in the filtering working state, the delivery pump 2 is running, the connection between the two ends of the front three-way valve 21 and the delivery pipe 20 is opened, the connection between the front three-way valve 21 and the cleaning pipe 22 is closed, the connection between the rear three-way valve 25 and the delivery pipe 20 and the functional pipe 121 is opened, the connection between the rear three-way valve 25 and the sewage pipe 26 is closed, the solenoid valve 32 is closed, and the delivery pump 2 delivers the liquid into the delivery pipe 20, enters the filter tank 1 through the functional pipe 121, and then flows through the plug cylinder 7 and the vertical cylinder 101 after being filtered by the filter element 4, enters the liquid outlet pipe 102 from the liquid outlet hole 70, and enters the liquid storage tank 3 from the emptying pipe 31, until the liquid level in the liquid storage tank 3 reaches the output pipe 30, the liquid flows out from the output pipe 30; in this process, the liquid enters the filter tank 1 from the functional pipe 121 and flows from bottom to top, Due to the guidance of the one-way valve 24, the liquid can only flow into the delivery pipe 20 from the reflux pipe 23, and the pressure above the scraper ring 6 remains unchanged. As the delivery pump 2 works, the pressure below the scraper ring 6 gradually increases, thereby pushing the scraper ring 6 to move upward until the scraper ring 6 contacts the blade disk 50. When the filtered liquid flows from bottom to top toward the plug cylinder 7, it will push open the lower baffle 72 on the lower flow hole 71, thereby flowing through the lower flow hole 71 into the flow cavity. Afterwards, under the push of the liquid, the upper baffle 74 closes the upper flow hole 73 from bottom to top, thereby allowing the liquid to flow into the liquid outlet pipe 102 through the liquid outlet hole 70, and then enter the liquid storage tank 3 through the emptying pipe 31. The magnet block 75 on the top of the plug cylinder 7 absorbs the top cover 11, which can ensure that even if the liquid flows back to the vertical cylinder 101 through the reflux pipe 111, the position of the plug cylinder 7 remains stable.When the system is cleaning and draining, the delivery pump 2 is running, the front three-way valve 21 is connected to the front connection of the delivery pump 2 and communicated with the connection of the cleaning pipe 22, the rear connection of the front three-way valve 21 is closed, the rear three-way valve 25 is communicated with the connection of the functional pipe 121 and the drainage pipe 26, the connection of the rear three-way valve 25 and the delivery pipe 20 is closed, the solenoid valve 32 is closed, and the liquid flows into the filter tank 1 along the delivery pipe 20 and the cleaning pipe 22, and pushes the blades 51 on the leaf disk 50, driving the rotating sleeve 5 and the leaf disk 50, and the vertical guide rod 53 to rotate, and the vertical scraper 54 scrapes off the impurities adhering to the outer wall of the filter element 4 during the rotation. Due to the control of the rear three-way valve 25, the liquid entering the filter tank 1 can only flow out from the drainage pipe 26 after passing through the functional pipe 121. In this process, due to The bottom of the scraper ring 6 is not subjected to pressure, while the liquid storage tank 3 is located at a high place, and the liquid therein has potential energy. Therefore, the liquid in the liquid storage tank 3 flows into the vertical cylinder 101 again along the liquid outlet pipe 102 and the return pipe 111, and enters the flow cavity of the plug cylinder 7 through the liquid outlet hole 70 and the upper flow hole 73. When the liquid flows to the lower baffle 72, the pressure makes the lower baffle 72 block the lower flow hole 71, and the liquid gathers in the flow cavity. Due to the potential energy of the liquid in the upper liquid storage tank 3, when the liquid in the flow cavity pushes the lower baffle 72, it overcomes the magnetic attraction between the magnet block 75 and the top cover 11, so that the plug cylinder 7 slides downward along the guide groove 76 and the guide bar 104 and enters the filter element 4. The sealed bottom of the plug cylinder 7 squeezes the liquid in the filter element 4 out of the filter element 4, and backwashes from the filter element 4. And the liquid flowing in from the cleaning pipe 22 flows downward from the through hole 52 on the blade disk 50, pushing the scraper ring 6 downward from the top. During the descent of the scraper ring 6, the horizontal scraper strip 63 scrapes the outer wall of the filter element 4 from top to bottom, and due to the cooperation between the slide groove 60 and the vertical guide rod 53, the scraper ring 6 rotates with the rotating sleeve 5 at the same time, until the scraper ring 6 falls to the bottom and is contacted and limited by the end ring 55, and the bottom surface of the pressure ring 61 contacts the bottom cover 12, so that the liquid containing dirt and impurities can flow through the functional pipe 121 and then be discharged from the sewage pipe 26, so as to achieve a good self-cleaning and sewage discharge effect. After sewage discharge, the front three-way valve 21 and the rear three-way valve 25 are reset, and the pipeline resumes the connected state when the filtering state, so that the scraper ring 6 is reset, and when the liquid flows through the plug cylinder 7, the upper baffle 74 is The upper flow hole 73 is blocked, and the liquid pushes the plug tube 7 upward until the liquid outlet hole 70 and the liquid outlet pipe 102 are partially aligned and overlapped. At this time, an attractive force is generated between the magnet block 75 and the top cover 11, and the magnet block 75 and the top cover 11 are adsorbed together, so that the liquid outlet hole 70 and the liquid outlet pipe 102 are completely aligned, thereby resetting the plug tube 7; the docking groove on the bottom surface of the docking seat 103 can be easily engaged with the docking ring 40, and the positioning groove 123 on the support seat 122 can be easily docked with the positioning block at the bottom of the filter element 4, so that the filter element 4 can be positioned from the upper and lower directions, which is convenient for the installation of the filter element 4 and can enhance the stability of the filter element 4 installed between the upper cover 10 and the bottom cover 12; the breathing valve 33 can ensure the pressure balance in the liquid storage tank 3 and ensure the smooth reflux of the liquid;A cavity 62 is provided in the pressure ring 61 to reduce weight, so that the liquid can push the scraper ring 6 and the pressure ring 61 to move up and down. ;

[0056] The electromechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0057] Components not described in detail herein are prior art.

[0058] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-powered self-draining filtration system, characterized in that: include: A filter tank (1), wherein an upper cover (10) is provided on the top of the filter tank (1), a bottom cover (12) is provided on the bottom of the filter tank (1), a filter element (4) is installed between the upper cover (10) and the bottom cover (12), the top of the filter element (4) is transparent, the bottom of the filter element (4) is sealed, a gap is left between the outer wall of the filter element (4) and the inner wall of the filter tank (1), a vertical cylinder (101) is provided on the upper cover (10), a liquid outlet pipe (102) is provided on the upper part of the side wall of the vertical cylinder (101), a top cover (11) is provided on the top of the vertical cylinder (101), a reflux pipe (111) is provided on the top cover (11), a plug cylinder (7) is slidably connected to the vertical cylinder (101), and the plug cylinder (7) Corresponding to the position matching the inner circumference size of the filter element (4), a flow cavity is provided in the plug barrel (7), a liquid outlet hole (70) is provided on the upper part of the side wall of the plug barrel (7) and is communicated with the flow cavity, the liquid outlet hole (70) is matched with the liquid outlet pipe (102), a lower flow hole (71) is provided on the bottom of the plug barrel (7), an upper flow hole (73) is provided on the top of the plug barrel (7), the lower flow hole (71) can be closed to drive the plug barrel (7) to move downward, the upper flow hole (73) can be closed to drive the plug barrel (7) to move upward, a cleaning pipe (22) and a return pipe (23) are provided on the upper part of the side wall of the filter tank (1), and a functional pipe (121) is provided on the bottom of the bottom cover (12); A delivery pump (2), wherein the water outlet of the delivery pump (2) is connected to a delivery pipe (20), and the delivery pipe (20) is provided with a front three-way valve (21), a lower three-way piece, and a rear three-way valve (25) in order from front to back, the front three-way valve (21) is connected to the cleaning pipe (22), the lower three-way piece is connected to the return pipe (23), a one-way valve (24) is provided on the return pipe (23), and the rear three-way valve (25) is connected to the sewage pipe (26) and the functional pipe (121); A liquid storage tank (3), the liquid storage tank (3) being arranged above the vertical cylinder (101), an output pipe (30) being arranged at the upper part of the side wall of the liquid storage tank (3), an emptying pipe (31) being arranged at the bottom of the liquid storage tank (3), the emptying pipe (31) being connected to the liquid outlet pipe (102) and the return pipe (111) via a top tee, and a solenoid valve (32) being arranged at the bottom end of the emptying pipe (31); A lower baffle (72) is provided at the top of the lower flow hole (71), the lower baffle (72) is hinged to one side of the lower flow hole (71) and the lower baffle (72) can cover the lower flow hole (71), and an upper baffle (74) is provided at the bottom of the upper flow hole (73), the upper baffle (74) is hinged to one side of the upper flow hole (73) and the upper baffle (74) can cover the upper flow hole (73); The side wall of the plug cylinder (7) is provided with a through guide groove (76), the vertical cylinder (101) is provided with a guide bar (104), the guide bar (104) is matched with the guide groove (76), and the top surface of the plug cylinder (7) is provided with a magnet block (75), and the magnet block (75) is used to adsorb the top cover (11); The liquid storage tank (3) is provided with an upwardly concave tank cover, and the tank cover is provided with a breathing valve (33).

2. The unpowered self-draining filtration system according to claim 1 is characterized in that: A docking seat (103) is provided at the bottom of the upper cover (10). The docking seat (103) is a cylindrical body that is transparent from top to bottom. The inner diameter of the docking seat (103) is the same as that of the vertical cylinder (101). The bottom of the docking seat (103) is docked with the top of the filter element (4). The outside of the docking seat (103) is rotatably connected to a rotating sleeve (5). A leaf disk (50) is provided on the outer wall of the bottom of the rotating sleeve (5). The outer edge of the leaf disk (50) is slidably connected to the inner wall of the filter tank (1). The leaf disk (50) is evenly and vertically connected to the inner wall of the filter tank (1). Blades (51) and through holes (52) are provided. The blades (51) are provided in a plurality of groups and are arranged along the radial direction of the blade disk (50). The blades (51) correspond to the height positions of the cleaning pipe (22) and the return pipe (23). The through holes (52) are provided in a plurality of groups and are all located between adjacent blades (51). Vertical guide rods (53) are evenly and vertically provided at the bottom of the blade disk (50). Vertical scraping strips (54) are provided on the vertical guide rods (53). The vertical scraping strips (54) are slidably connected to the outer wall of the filter element (4).

3. The unpowered self-draining filtration system according to claim 2 is characterized in that: The filter element (4) is provided with a scraper ring (6) on its outer sleeve. The scraper ring (6) is located below the leaf disk (50). The outer wall of the scraper ring (6) is slidably connected to the inner wall of the filter tank (1). The scraper ring (6) is provided with a slide groove (60). The slide grooves (60) are provided in multiple groups and are compatible with the vertical guide rod (53). The inner wall of the scraper ring (6) is provided with a horizontal scraper strip (63). The horizontal scraper strip (63) is slidably connected to the outer wall of the filter element (4).

4. The unpowered self-draining filtration system according to claim 3 is characterized in that: A support seat (122) is provided on the bottom cover (12); the bottom of the support seat (122) is connected to the bottom cover (12) via a support column; the support columns are provided in multiple groups and are evenly distributed; the support seat (122) is located above the functional tube (121); the top of the support seat (122) abuts against the bottom surface of the filter element (4); the size of the support seat (122) matches that of the filter element (4); the bottom end of the vertical guide rod (53) is connected to an end ring (55); the end ring (55) is slidably connected to the outside of the support seat (122); and the height of the support column is greater than the thickness of the end ring (55).

5. The unpowered self-draining filtration system according to claim 4 is characterized in that: The bottom surface of the docking seat (103) is provided with a docking groove, the top of the filter element (4) is provided with a docking ring (40), the docking ring (40) is matched with the docking groove, the bottom of the filter element (4) is provided with a positioning block, the top surface of the support seat (122) is provided with a positioning groove (123), the positioning block is matched with the positioning groove (123).

6. The unpowered self-draining filtration system according to claim 4 is characterized in that: A pressing ring (61) is provided at the bottom of the scraper ring (6), and the pressing ring (61) is used to fill the space between the scraper ring (6) and the bottom cover (12) when the scraper ring (6) is in a low position. A cavity (62) is provided in the pressing ring (61), and the cavity (62) is annular and evenly arranged. The cavity (62) is used to reduce the weight of the pressing ring (61).

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