Water filtering device for water testing

Abstract

The present invention belongs to the field of filtration technology, and specifically discloses a water filtration device for water testing, comprising a fixed cylinder, a movable rod slidably provided at one end of the fixed cylinder, a handle provided at the end of the fixed cylinder, a front end of the movable rod connected to a water outlet pipe, a switch provided on the water outlet pipe, a filter cylinder provided on the lower wall of the movable rod, a through hole provided on the upper end surface of the filter cylinder, a connecting hole provided through the movable rod, the two ends of the connecting hole being respectively connected to the through hole and the water outlet pipe, a sealing piston slidably provided in the filter cylinder, a center hole provided through the center of the sealing piston, a hollow tube provided at the center hole of the lower end of the sealing piston, the hollow tube extending through the lower end of the filter cylinder, and an automatic opening component provided at the lower end of the hollow tube. The present invention utilizes the alternating effect between deadweight and buoyancy to filter sewage under the action of deadweight, and to drain filtered water and backwash the filter screen under the action of buoyancy.

Description

Technical Field

[0001] The invention belongs to the technical field of filtration, and in particular relates to a water filtration device for water testing. Background Art

[0002] Environmental protection refers to the various actions humans take to address current or potential environmental problems, coordinate the relationship between humans and the environment, and ensure sustainable economic and social development. With the rapid development of industry, the types and quantities of wastewater have increased dramatically, and water pollution has become increasingly widespread and severe, threatening human health and safety. Therefore, it is necessary to sample and test wastewater. When sampling water bodies with high levels of floating and suspended matter, the wastewater must first be filtered. However, when sampling wastewater, conventional samplers can clog the filter screen, requiring frequent replacement or cleaning, resulting in low efficiency and inconvenience.

[0003] Therefore, a water testing water filter device is needed to solve the above problems. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a water filtration device for water testing, which utilizes the alternating effect between its own weight and buoyancy to filter sewage under the action of its own weight, and to discharge the filtered water and backwash the filter under the action of buoyancy.

[0005] The top end face of described outer filter presses is provided with an upper end face of described outer filter press, and the lower end face of described outer filter press is provided with an upper end face of described filter press.

[0006] Furthermore, the automatic opening component includes an end seat, a sealing baffle, a limiting hole, a plug rod, a tensioning spring, a downward pressure rod and a limiting shaft. The end seat is a hollow cylinder, and the end seat is sleeved on the lower end of the hollow tube. The lower end of the end seat is flush with the lower end of the hollow tube. The lower end face of the end seat is provided with limiting holes around the axis array. The tensioning spring is provided on the bottom wall of the limiting hole. The limiting shaft is slidably provided in the limiting hole. The upper end of the limiting shaft is provided at the end of the tensioning spring. The sealing baffle is provided at the lower end of the limiting shaft. The lower end of the downward pressure rod is provided at the upper end of the limiting shaft. The downward pressure rod passes through the tensioning spring and the upper wall of the end seat. The lower end of the plug rod is provided at the center of the upper wall of the sealing baffle, and the plug rod is inserted into the hollow tube.

[0007] Furthermore, the floating control assembly includes a sliding tube, a mounting ring and a rubber membrane. The sliding tube is slidably sleeved on the hollow tube. The mounting ring is symmetrically arranged at both ends of the sliding tube. The sliding tube is located between the retaining ring and the end seat. The rubber membrane is arranged on the mounting ring and surrounds the sliding tube.

[0008] Furthermore, the buffer sealing assembly includes a compression spring and a sealing plate. The compression spring is arranged in the filter cartridge, the lower end of the compression spring is arranged on the upper end surface of the sealing piston, and the sealing plate is arranged on the upper end of the compression spring.

[0009] Furthermore, the gas generating assembly includes an airbag, a pressure plate and a guide rod, the side wall of the handle is provided with a guide hole, the guide rod is slidably arranged in the guide hole, the pressure plate is arranged at the end of the guide rod, the airbag is arranged in a ring shape, the airbag is arranged between the handle and the pressure plate, the airbag is sleeved on the guide rod, and the airbag and the rubber membrane are connected by a ventilation tube.

[0010] Furthermore, in the initial state, the upper end of the plug rod is higher than the upper end of the filter screen.

[0011] Furthermore, the distance between the lower end of the filter screen and the end seat is greater than the length of the sliding tube.

[0012] Furthermore, the outer diameter of the filter screen is the same as the outer wall size of the hollow tube.

[0013] Furthermore, the vent pipe is provided with an air release valve and a one-way valve. The one-way valve is located between the air release valve and the airbag. The airbag is provided with a two-way valve.

[0014] Furthermore, a locking screw is provided on the outer wall of the fixing cylinder near the movable rod.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] 1. Under the action of gravity, the sliding tube falls to the upper end surface of the end seat. The sliding tube and the mounting ring push the lower pressure rod, the limit shaft, the sealing baffle and the plug rod downward. At this time, the upper end of the plug rod is on the lower side of the filter screen. Under the action of gravity, the end seat and the hollow tube move downward. The hollow tube drives the sealing piston, the compression spring and the sealing plate to move downward. The pressure in the space above the sealing piston in the filter cartridge decreases. Under the action of negative pressure, the sewage passes through the filter screen and enters the hollow tube. Then, it passes through the center hole of the sealing piston and enters the space above the sealing piston.

[0017] 2. Use the extrusion airbag to inflate the space formed by the rubber membrane, the mounting ring and the sliding tube. The rubber membrane expands, and the rubber membrane, the mounting ring and the sliding tube float to the retaining ring, with their lower ends above the filter screen. The limit shaft drives the sealing baffle and the plug rod to move upward. The upper end of the plug rod is above the filter screen, and the filter screen is blocked. The retaining ring drives the hollow rod to continue to move upward, and the hollow rod drives the sealing piston to move upward. The space above the sealing piston in the filter cartridge is reduced, and the water in the filter cartridge passes through the through hole and the connecting channel, and finally the filtered water is discharged from the outlet pipe.

[0018] 3. When the sealing plate moves to the through hole at the upper end of the filter cartridge, the sealing plate blocks the through hole. Under the action of the rubber membrane, the mounting ring and the buoyancy of the sliding tube, the sealing piston continues to move upward, and the sealing piston compresses the compression spring. At this time, the through hole is blocked, and the filtered water passes downward through the center hole, and then pushes the plug rod downward. At this time, when the upper end of the plug rod drops to the lower side of the filter screen, the filtered water backwashes the filter screen to wash away impurities on the filter screen, thereby avoiding clogging of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a water testing filter device proposed by the present invention when the air bag is inflated;

[0020] Figure 2 This is a schematic structural diagram of a water testing filter device proposed by the present invention when the air bag is deflated;

[0021] Figure 3 for Figure 1 Schematic diagram of the internal structure of the filter cartridge;

[0022] Figure 4 for Figure 2 Schematic diagram of the internal structure of the filter cartridge;

[0023] Figure 5 for Figure 1 Enlarged view of part B;

[0024] Figure 6 for Figure 1 Enlarged view of part C in the middle;

[0025] Figure 7 for Figure 2 Enlarged view of part D in the middle;

[0026] Figure 8 for Figure 1 Schematic diagram of the AA section.

[0027] Among them, 1. Fixed cylinder, 2. Movable rod, 3. Handle, 4. Water outlet pipe, 5. Switch, 6. Filter cylinder, 7. Through hole, 8. Connecting channel, 9. Sealing piston, 10. Center hole, 11. Hollow tube, 12. Automatic opening component, 13. Filter port, 14. Filter screen, 15. Retaining ring, 16. Floating control component, 17. Buffer sealing component, 18. Gas generating component, 19. End seat, 20. Sealing baffle, 21. Limiting hole, 22. Plug rod, 23. Tension spring, 24. Press rod, 25. Limiting shaft, 26. Locking screw, 27. Sliding tube, 28. Mounting ring, 29. Rubber membrane, 30. Compression spring, 31. Sealing plate, 32. Air bag, 33. Pressure plate, 34. Guide rod, 35. Guide hole, 36. Air release valve, 37. One-way valve 1, 38. One-way valve 2, 39. Vent pipe.

[0028] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0031] like Figure 1 、 Figure 2 、 Figure 8As shown, the present invention proposes a water filter device for water testing, including a fixed cylinder 1, one end of the fixed cylinder 1 is slidably provided with a movable rod 2, the end of the fixed cylinder 1 is provided with a handle 3, the front end of the movable rod 2 is connected to the water outlet pipe 4, the water outlet pipe 4 is provided with a switch 5, the lower wall of the movable rod 2 is provided with a filter cylinder 6, the upper end surface of the filter cylinder 6 is provided with a through hole 7, a connecting channel 8 is penetrated by the movable rod 2, the two ends of the connecting channel 8 are respectively connected with the through hole 7 and the water outlet pipe 4, a sealing piston 9 is slidably provided in the filter cylinder 6, and the center of the sealing piston 9 is penetrated by a center hole 10, A hollow tube 11 is provided at the center hole 10 at the lower end of the sealing piston 9, and the hollow tube 11 passes through the lower end of the filter cylinder 6. The lower end of the hollow tube 11 is provided with an automatic opening component 12, and a filter port 13 is provided around the axis array in the middle and lower part of the outer wall of the hollow tube 11. A filter screen 14 is provided at the filter port 13. A retaining ring 15 is provided on the outer wall of the hollow tube 11, and a floating control component 16 is slidingly provided on the hollow tube 11 between the retaining ring 15 and the automatic opening component 12. A buffer sealing component 17 is provided at the upper end of the sealing piston 9, and a gas generating component 18 is provided on the handle 3.

[0032] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 7 As shown, the automatic opening component 12 includes an end seat 19, a sealing baffle 20, a limiting hole 21, a plug rod 22, a tension spring 23, a pressing rod 24 and a limiting shaft 25. The end seat 19 is a hollow cylindrical shape. The end seat 19 is sleeved on the lower end of the hollow tube 11. The lower end of the end seat 19 is flush with the lower end of the hollow tube 11. The lower end surface of the end seat 19 is provided with limiting holes 21 around the axis array. The tension spring 23 is provided in the limiting hole 21. The bottom wall of the limit shaft 25 is slidably arranged in the limit hole 21, the upper end of the limit shaft 25 is arranged at the end of the tensioning spring 23, the sealing baffle 20 is arranged at the lower end of the limit shaft 25, the lower end of the lower pressure rod 24 is arranged at the upper end of the limit shaft 25, the lower pressure rod 24 passes through the tensioning spring 23 and the upper wall of the end seat 19, the lower end of the plug rod 22 is arranged at the center of the upper wall of the sealing baffle 20, and the plug rod 22 is inserted into the hollow tube 11.

[0033] like Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 As shown, the floating control assembly 16 includes a sliding tube 27, a mounting ring 28 and a rubber membrane 29. The sliding tube 27 is slidably mounted on the hollow tube 11. The mounting ring 28 is symmetrically arranged at both ends of the sliding tube 27. The sliding tube 27 is located between the retaining ring 15 and the end seat 19. The rubber membrane 29 is arranged on the mounting ring 28 and surrounds the sliding tube 27.

[0034] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the buffer sealing assembly 17 includes a compression spring 30 and a sealing plate 31. The compression spring 30 is arranged in the filter cartridge 6, the lower end of the compression spring 30 is arranged on the upper end surface of the sealing piston 9, and the sealing plate 31 is arranged on the upper end of the compression spring 30.

[0035] like Figure 1 、 Figure 2 As shown, the gas generating assembly 18 includes an airbag 32, a pressure plate 33 and a guide rod 34. The side wall of the handle 3 is provided with a guide hole 35. The guide rod 34 is slidably arranged in the guide hole 35. The pressure plate 33 is arranged at the end of the guide rod 34. The airbag 32 is arranged in a ring shape. The airbag 32 is arranged between the handle 3 and the pressure plate 33. The airbag 32 is sleeved on the guide rod 34. The airbag 32 is connected to the rubber membrane 29 through a ventilation tube 39.

[0036] like Figure 2 、 Figure 6 As shown, in the initial state, the upper end of the plug rod 22 is higher than the upper end of the filter screen 14.

[0037] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 As shown, the distance between the lower end of the filter screen 14 and the end seat 19 is greater than the length of the sliding tube 27.

[0038] like Figure 1 、 Figure 8 As shown, the outer diameter of the filter screen 14 is the same as the outer wall size of the hollow tube 11 .

[0039] like Figure 1 、 Figure 2 As shown, the vent pipe 39 is provided with a deflation valve 36 and a one-way valve 37 . The one-way valve 37 is located between the deflation valve 36 and the airbag 32 . The airbag 32 is provided with a one-way valve 38 .

[0040] like Figure 1 、 Figure 2 As shown, a locking screw 26 is provided on the outer wall of the fixing cylinder 1 near the movable rod 2 .

[0041] When in use, hold the handle 3 with your hand, place the fixed cylinder 1 and the movable rod 2 horizontally and on the upper side of the sewage to be tested, adjust the length of the movable rod 2 in the fixed cylinder 1 according to the actual situation, and then use the locking screw 26 to lock the fixed cylinder 1 and the movable rod 2, close the switch 5, and in the initial state, the gas between the rubber membrane 29 and the sliding tube 27 is released, and the sliding tube 27 falls to the upper end surface of the end seat 19 under the action of gravity, and the sliding tube 27 and the mounting ring 28 push the pressing rod 24 to move downward, and the pressing rod 24 pushes the limiting shaft 25 downward, and the limiting shaft 25 pushes the sealing block downward. Plate 20, the sealing baffle 20 drives the plug rod 22 downward. At this time, the upper end of the plug rod 22 is at the lower side of the filter screen 14. Under the action of gravity, the end seat 19 and the hollow tube 11 move downward, and the hollow tube 11 drives the sealing piston 9, the compression spring 30 and the blocking plate 31 to move downward. The pressure in the space above the sealing piston 9 in the filter cartridge 6 is reduced. Under the action of negative pressure, the sewage is filtered by the filter screen 14 and enters the hollow tube 11. It passes through the center hole 10 of the sealing piston 9 and enters the space above the sealing piston 9 until the sealing piston 9 falls to the bottom wall of the filter cartridge 6;

[0042] Then turn on the switch 5 on the water outlet pipe 4, press the pressure plate 33, the pressure plate 33 squeezes the air bag 32, and the gas in the air bag 32 enters the space composed of the rubber membrane 29, the mounting ring 28 and the sliding tube 27 through the vent pipe 39. The rubber membrane 29 expands. Under the action of buoyancy, the rubber membrane 29, the mounting ring 28 and the sliding tube 27 float to the retaining ring 15. The lower ends of the rubber membrane 29, the mounting ring 28 and the sliding tube 27 are on the upper side of the filter screen 14. At this time, the tension spring 23 pulls the limit shaft 25 upward, and the limit shaft 25 pushes the lower pressure rod 24 upward. When the limit shaft 25 drives the sealing baffle 20 to move upward, the sealing baffle 20 drives the plug rod 22 to move upward, the upper end of the plug rod 22 is located on the upper side of the filter screen 14, the filter screen 14 is blocked, the rubber membrane 29, the mounting ring 28 and the sliding tube 27 continue to push the baffle ring 15, the baffle ring 15 drives the hollow rod to move upward, the hollow rod drives the sealing piston 9 to move upward, the space above the sealing piston 9 in the filter cartridge 6 is reduced, the water in the filter cartridge 6 passes through the through hole 7 and the connecting channel 8, and then enters the water outlet pipe 4, and finally the filtered water is discharged from the water outlet pipe 4;

[0043] When the sealing plate moves to the through hole 7 at the upper end of the filter cartridge 6, the sealing plate blocks the through hole 7. Under the action of the buoyancy of the rubber membrane 29, the mounting ring 28 and the sliding tube 27, the sealing piston 9 continues to move upward, and the sealing piston 9 compresses the compression spring 30. At this time, the through hole 7 is blocked, and the filtered water passes downward through the center hole 10, and then pushes the plug rod 22 downward. The plug rod 22 pushes the sealing baffle 20 downward, and the sealing baffle 20 drives the limit shaft 25 to overcome the tension spring 23 and move downward. At this time, when the upper end of the plug rod 22 drops to the lower side of the filter screen 14, the filtered water backwashes the filter screen 14, washes away impurities on the filter screen 14, and avoids clogging of the filter screen 14.

[0044] Then open the air release valve 36 on the vent pipe 39, and the gas in the rubber membrane 29, the mounting ring 28 and the sliding pipe 27 is released. Repeat the above operation to achieve sewage filtration.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

[0047] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A water filter device for water testing, comprising a fixed cylinder (1), one end of which is slidably provided with a movable rod (2), and an end of which is provided with a handle (3), characterized in that: The front end of the movable rod (2) is connected to the water outlet pipe (4), and a switch (5) is provided on the water outlet pipe (4). The lower wall of the movable rod (2) is provided with a filter cartridge (6), and the upper end surface of the filter cartridge (6) is provided with a through hole (7). A connecting hole (8) is provided through the movable rod (2), and the two ends of the connecting hole (8) are respectively connected to the through hole (7) and the water outlet pipe (4). A sealing piston (9) is provided in the filter cartridge (6) for sliding. A center hole (10) is provided through the center of the sealing piston (9). A hollow tube (11) is provided at the center hole (10) at the lower end of the sealing piston (9). A hollow tube (11) passes through the lower end of the filter cartridge (6), an automatic opening assembly (12) is provided at the lower end of the hollow tube (11), a filter port (13) is provided in an array around an axis at the middle and lower portion of the outer wall of the hollow tube (11), a filter screen (14) is provided at the filter port (13), a retaining ring (15) is provided on the outer wall of the hollow tube (11), a floating control assembly (16) is provided on the hollow tube (11) for sliding between the retaining ring (15) and the automatic opening assembly (12), a buffer sealing assembly (17) is provided at the upper end of the sealing piston (9), and a gas generating assembly (18) is provided on the handle (3); The automatic opening assembly (12) includes an end seat (19), a sealing baffle (20), a limiting hole (21), a plug rod (22), a tension spring (23), a pressing rod (24) and a limiting shaft (25). The end seat (19) is a hollow cylindrical shape. The end seat (19) is sleeved on the lower end of the hollow tube (11). The lower end of the end seat (19) is flush with the lower end of the hollow tube (11). The lower end surface of the end seat (19) is provided with limiting holes (21) arranged around the axis. The tension spring (23) is arranged in the limiting hole (21). The bottom wall of the housing (19), the limiting shaft (25) is slidably arranged in the limiting hole (21), the upper end of the limiting shaft (25) is arranged at the end of the tensioning spring (23), the sealing baffle (20) is arranged at the lower end of the limiting shaft (25), the lower end of the pressing rod (24) is arranged at the upper end of the limiting shaft (25), the pressing rod (24) passes through the tensioning spring (23) and the upper wall of the end seat (19), the lower end of the plug rod (22) is arranged at the center of the upper wall of the sealing baffle (20), and the plug rod (22) is inserted into the hollow tube (11); The floating control assembly (16) includes a sliding tube (27), a mounting ring (28) and a rubber membrane (29), wherein the sliding tube (27) is slidably sleeved on the hollow tube (11), the mounting ring (28) is symmetrically arranged at both ends of the sliding tube (27), the sliding tube (27) is located between the retaining ring (15) and the end seat (19), and the rubber membrane (29) is arranged on the mounting ring (28) and surrounds the sliding tube (27); The buffer sealing assembly (17) comprises a compression spring (30) and a sealing plate (31); the compression spring (30) is arranged in the filter cartridge (6); the lower end of the compression spring (30) is arranged on the upper end surface of the sealing piston (9); and the sealing plate (31) is arranged on the upper end of the compression spring (30).

2. A water filter device for water testing according to claim 1, characterized in that: The gas generating assembly (18) includes an airbag (32), a pressure plate (33) and a guide rod (34). The side wall of the handle (3) is provided with a guide hole (35). The guide rod (34) is slidably arranged in the guide hole (35). The pressure plate (33) is arranged at the end of the guide rod (34). The airbag (32) is arranged in an annular shape. The airbag (32) is arranged between the handle (3) and the pressure plate (33). The airbag (32) is sleeved on the guide rod (34). The airbag (32) is connected to the rubber membrane (29) through a vent pipe (39).

3. A water filter device for water testing according to claim 2, characterized in that: In the initial state, the upper end of the plug rod (22) is higher than the upper end of the filter screen (14).

4. A water filter device for water testing according to claim 3, characterized in that: The distance between the lower end of the filter screen (14) and the end seat (19) is greater than the length of the sliding tube (27).

5. The water filter device for water testing according to claim 4, characterized in that: The outer diameter of the filter screen (14) is the same as the outer wall size of the hollow tube (11).

6. A water filter device for water testing according to claim 5, characterized in that: The vent pipe (39) is provided with a deflation valve (36) and a one-way valve (37). The one-way valve (37) is located between the deflation valve (36) and the air bag (32). The air bag (32) is provided with a two-way valve (38).

7. A water filter device for water testing according to claim 6, characterized in that: A locking screw (26) is provided on the outer wall of the fixed cylinder (1) near the movable rod (2).

Images