A desktop ultrafiltration system for convenient replacement of filter membranes

Abstract

The present invention relates to a desktop ultrafiltration system for convenient replacement of filter membranes applied in the field of water ultrafiltration technology, comprising a housing, a water inlet pipe module, a concentrated water pipe module, a filter membrane cartridge, a filter element assembly, a vertical pipe, a filter water pipe module, a piston ring, a float bag, a supporting edge and a rotary claw. The present invention realizes that the water is automatically passed through the filter element assembly by atmospheric pressure by setting the height of the filter water pipe module lower than the water inlet module, thereby effectively reducing the use of the system water pump. The filter element assembly is tightly installed in the filter membrane cartridge through the piston ring, and the float bag provides upward buoyancy for the filter element assembly, and cooperates with the rotary claw to hook the bottom edge of the filter membrane cartridge, thereby effectively improving the installation stability of the filter element assembly. When replacing the filter element assembly, the new filter element assembly is directly inserted into the filter membrane cartridge, and the old filter element assembly is pushed out of the filter membrane cartridge. The filter element assembly is replaced simply and quickly, and the old filter element assembly subsequently floats to the top of the housing, which is convenient for the filter element assembly to be salvaged and removed.

Description

Technical Field

[0001] The invention relates to a desktop ultrafiltration system, in particular to a desktop ultrafiltration system for convenient replacement of filter membranes applied in the technical field of water ultrafiltration. Background Art

[0002] In the field of water purification, the filtering capacity of the ultrafiltration system is a key factor in reflecting the water purification effect. The filter element in the ultrafiltration system needs to filter out a large amount of impurities such as sediment, microorganisms and heavy metals in the raw water. The ultrafiltration membrane is a microporous filter membrane with a consistent pore size specification and a rated pore size range of less than 0.01 microns. The filter element will become clogged after a period of use and needs to be replaced before it can be used normally.

[0003] The specification of Chinese invention patent CN202311776262.2 discloses "A water purification system based on ultrafiltration membrane", which adjusts the operating power of the pumping pump based on the change of the outlet water pressure through the optimization unit, thereby realizing adaptive adjustment of the operating parameters according to the different water quality conditions in different waters, and stopping purification in time according to the influence of water quality on the blockage of membrane pores, thereby reducing the number of times the ultrafiltration membrane needs to be cleaned due to blockage and increasing the service life of the ultrafiltration membrane.

[0004] The installation of the ultrafiltration element in the existing system is complicated, and the disassembly and replacement of the ultrafiltration element is inconvenient. In addition, most of the ultrafiltration elements are below the water surface, and the old ultrafiltration elements are inconvenient to be removed from the system. In order to replace the ultrafiltration element, the entire ultrafiltration system needs to stop filtering and the water needs to be completely drained, which delays the use of the ultrafiltration system. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the installation of the ultrafiltration element in the existing system is complicated, and the disassembly and replacement of the ultrafiltration element is inconvenient, and most of the ultrafiltration elements are below the water surface, and the old ultrafiltration elements are inconvenient to be removed from the system. In order to replace the ultrafiltration element, the entire ultrafiltration system needs to stop filtering and the water needs to be completely drained, delaying the use of the ultrafiltration system.

[0006] In order to solve the above problems, the present invention provides a desktop ultrafiltration system for convenient replacement of filter membranes, including a shell, a water inlet pipe module and a concentrated water pipe module are respectively fixedly connected to the top and bottom of one end of the shell, a liquid level sensing module is fixedly connected between the water inlet pipe module and the concentrated water pipe module, a filter membrane cartridge is fixedly connected to the top of the other end of the shell, a filter element assembly is provided inside the filter membrane cartridge, a water outlet end cover is fixedly connected to the top of the filter element assembly, a vertical pipe is threadedly connected to the middle of the water outlet end cover, a water filter pipe module is movably connected to the top of the vertical pipe, and the top height of the water filter pipe module is lower than the water inlet pipe module; a piston ring is fixedly connected to the outside of the top of the filter element assembly, the piston ring is in close contact with the inner wall of the filter membrane cartridge, a float bag is fixedly connected to the bottom of the piston ring, a supporting ridge is fixedly connected to the outer wall of the bottom of the filter element assembly, a groove is provided at the bottom end of the supporting ridge, a rotary claw is rotatably connected to the inside of the groove, and the rotary claw corresponds to the bottom edge of the filter membrane cartridge.

[0007] In the above-mentioned desktop ultrafiltration system which is convenient for replacing the filter membrane, the filter element assembly is tightly installed in the filter membrane cylinder through the piston ring, and the float bag provides upward buoyancy for the filter element assembly, and cooperates with the rotary claw to hook the bottom edge of the filter membrane cylinder, thereby effectively improving the installation stability of the filter element assembly. When replacing the filter element assembly, the new filter element assembly is directly inserted from the filter membrane cylinder, and the old filter element assembly is pushed out of the filter membrane cylinder. The filter element assembly replacement method is simple and fast. Subsequently, the old filter element assembly floats to the top of the outer shell, which is convenient for the filter element assembly to be salvaged and removed.

[0008] As a further improvement of the present application, the interior of the piston ring is arranged in a honeycomb shape and is filled with air. The honeycomb-shaped piston ring is easier to deform, and the honeycomb structure of the piston ring is convenient for storing air, further improving the buoyancy of the filter element assembly.

[0009] As a further improvement of the present application, a limiting groove is provided on the bottom inner wall of the filter membrane cylinder, the supporting edge corresponds to the limiting groove, a telescopic strip is movably connected to the middle of the supporting edge, and the telescopic strip extending from the supporting edge is stuck in the limiting groove, thereby preventing the filter element assembly from rotating.

[0010] As a further improvement of the present application, a pressure groove is provided at the bottom end of the telescopic strip, and the tip of the claw of the rotary claw is fixedly connected with a pointed head, which is engaged with the pressure groove. After the telescopic strip is extended and inserted into the limiting groove, the pointed head is separated from the pressure groove. At this time, the rotary claw automatically rotates out of the groove, making it easier for the rotary claw to hook the bottom edge of the filter membrane cylinder.

[0011] As another improvement of the present application, the water filter tube module is rotatable, and the rotation direction of the water filter tube module is opposite to the rotation direction of the vertical pipe. The water inlet end of the water filter tube module is fixedly connected with a torsion tube, and the bottom end of the torsion tube is fixedly connected to the inner wall of the vertical pipe. The torsion tube improves the sealing connection effect between the water filter tube module and the vertical pipe, and does not affect the rotational movement of the water filter tube module and the vertical pipe.

[0012] As another improvement supplement of the present application, the outer surface of the torsion tube is fixedly connected with parallel arranged pipe ribs, the torsion tube is made of elastic rubber material, and the pipe ribs are made of tensile fiber material. When the water filter pipe module and the vertical pipe rotate, the torsion tube is twisted and cooperates with the spiral of the pipe ribs to shrink the internal space of the torsion tube, thereby adjusting the water outlet flow of the system.

[0013] As another improvement supplement of the present application, a flow detection module is fixedly connected to the middle part of the vertical pipe, and a flow preservation tube is fixedly connected to the middle part of the flow detection module. The flow preservation tube is plugged into the torsion tube, and the middle part of the flow preservation tube corresponds to the pipe rib. The flow detection module is used to detect the clean water discharge flow of the system, and the flow preservation tube supports the rotated and tightened torsion tube to maintain the minimum flow rate passing through the torsion tube.

[0014] As another improvement of the present application, a barrel groove is opened in the middle of the water outlet end cover, the upper diameter of the barrel groove is smaller than the lower diameter, and the upper mouth of the barrel groove vertically corresponds to the torsion tube, the interior of the barrel groove is movably connected with a movable plug, and the bottom of the movable plug is fixedly connected with a spring. The clean water filtered by the filter element assembly is concentrated by the water outlet end cover, and the movable plug is pushed up by the spring to automatically close the water outlet end cover to prevent the water outlet end of the filter element assembly from being contaminated.

[0015] As another improvement supplement of the present application, the bottom end of the flow-preserving tube extends into the barrel groove, and the flow-preserving tube is abuttedly connected with the middle part of the top end of the movable plug. After the vertical pipe and the water outlet end cover are threadedly connected, the flow-preserving tube extends into the barrel groove, pressing the movable plug down, making it easier for clean water to be input into the vertical pipe.

[0016] To summarize, the present invention sets the height of the water filter pipe module lower than that of the water inlet module, cooperates with the liquid level sensing module to detect the water level, and realizes the use of atmospheric pressure to automatically pass water through the filter element assembly, thereby effectively reducing the use of the system water pump. The filter element assembly is tightly installed in the filter membrane cylinder through the piston ring, and the float bag provides upward buoyancy for the filter element assembly, and cooperates with the rotary claw to hook the bottom edge of the filter membrane cylinder, thereby effectively improving the installation stability of the filter element assembly. When replacing the filter element assembly, the new filter element assembly is directly inserted from the filter membrane cylinder, and the old filter element assembly is pushed out of the filter membrane cylinder. The filter element assembly is replaced simply and quickly, and the old filter element assembly subsequently floats to the top of the outer shell to facilitate the salvage and removal of the filter element assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present application;

[0018] Figure 2 This is a three-dimensional cross-sectional structural diagram of the filter membrane cartridge of the first embodiment of the present application;

[0019] Figure 3 This is a demonstration diagram of the replacement of the filter element assembly in the first embodiment of the present application;

[0020] Figure 4 This is a three-dimensional structural diagram of a filter element assembly according to the first embodiment of the present application;

[0021] Figure 5 This is the first implementation method of this application Figure 4 A partial enlarged view of the

[0022] Figure 6 This is a top-down stereoscopic structural diagram of the limiting groove in the first embodiment of the present application;

[0023] Figure 7 This is a three-dimensional structural diagram of the telescopic strip and the rotary claw in the first embodiment of the present application;

[0024] Figure 8 This is a cross-sectional view of a standpipe and a water filter pipe module according to a second embodiment of the present application;

[0025] Fig. 9 This is a cross-sectional three-dimensional structural diagram of a vertical pipe in a second embodiment of the present application;

[0026] Fig.10 This is a three-dimensional structural diagram of a torsion tube and tube ribs in the second embodiment of the present application;

[0027] Fig.11 This is a three-dimensional structural diagram of the twisted tube after being twisted in the second embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1. Shell; 101. Water inlet pipe module; 102. Concentrated water pipe module; 103. Liquid level sensing module; 2. Filter membrane cartridge; 201. Filter element assembly; 3. Water outlet end cover; 301. Vertical pipe; 302. Filter pipe module; 4. Piston ring; 401. Float bag; 402. Support edge; 403. Groove; 404. Rotary claw; 405. Limiting groove; 406. Telescopic strip; 407. Pressing groove; 408. Pointed head; 5. Torsion tube; 501. Pipe rib; 502. Flow detection module; 503. Flow retaining tube; 6. Cylinder groove; 601. Movable plug; 602. Spring. DETAILED DESCRIPTION

[0030] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] Figure 1-2A desktop ultrafiltration system for convenient replacement of filter membranes is shown, comprising a housing 1, a water inlet pipe module 101 and a concentrated water pipe module 102 are fixedly connected to the top and bottom of one end of the housing 1, a liquid level sensing module 103 is fixedly connected between the water inlet pipe module 101 and the concentrated water pipe module 102, a filter membrane cartridge 2 is fixedly connected to the top of the other end of the housing 1, a filter element assembly 201 is sleeved inside the filter membrane cartridge 2, a water outlet end cap 3 is fixedly connected to the top of the filter element assembly 201, a vertical pipe 301 is threadedly connected to the middle of the water outlet end cap 3, a water filter pipe module 302 is movably connected to the top of the vertical pipe 301, and the top of the water filter pipe module 302 is lower than the water inlet pipe module 101;

[0033] Water is sent into the outer shell 1 through the water inlet pipe module 101, and the water level is detected by the liquid level sensing module 103. When the water level is higher than the water filter pipe module 302, the water is automatically pressed through the filter element assembly 201 due to the effect of atmospheric pressure. The filtered clean water is collected by the water outlet end cover 3 and discharged from the water filter pipe module 302 through the vertical pipe 301. By adjusting the liquid level inside the outer shell 1, the pressure of the water passing through the filter element assembly 201 is controlled. The pressure regulation is convenient, which effectively reduces the use of the system for the water pump, thereby effectively reducing the workload of system management.

[0034] Figure 2-4 As shown, the top of the filter element assembly 201 is fixedly connected to the outside with a piston ring 4, the piston ring 4 is in close contact with the inner wall of the filter membrane cylinder 2, the bottom of the piston ring 4 is fixedly connected to a float bag 401, the bottom outer wall of the filter element assembly 201 is fixedly connected to a support ridge 402, the bottom end of the support ridge 402 is provided with a groove 403, the inside of the groove 403 is rotatably connected with a rotary claw 404, the rotary claw 404 corresponds to the bottom edge of the filter membrane cylinder 2, the inside of the piston ring 4 is arranged in a honeycomb shape, and the inside of the piston ring 4 is filled with air, the honeycomb-shaped piston ring 4 is easier to deform, and the honeycomb structure of the piston ring 4 is convenient for storing air, further improving the buoyancy of the filter element assembly 201;

[0035] When replacing and installing the filter element assembly 201, first take out the vertical pipe 301, then install the new filter element assembly 201 on the vertical pipe 301, and directly insert the filter element assembly 201 into the filter membrane cartridge 2. The new filter element assembly 201 presses the old filter element assembly 201 down, and the old filter element assembly 201 is squeezed out of the filter membrane cartridge 2. The replacement operation is simple and convenient. Then the filter element assembly 201 rises due to the buoyancy of the piston ring 4 and the float bag 401. Because the rotary claw 404 hooks the bottom edge of the filter membrane cartridge 2, the stability of the filter element assembly 201 in the filter membrane cartridge 2 is effectively improved.

[0036] Figure 4-7As shown, a limiting groove 405 is provided on the bottom inner wall of the filter membrane cartridge 2, and the supporting edge 402 corresponds to the limiting groove 405. A telescopic strip 406 is movably connected to the middle part of the supporting edge 402, and the telescopic strip 406 extending from the supporting edge 402 is inserted into the limiting groove 405, thereby preventing the filter element assembly 201 from rotating. A pressing groove 407 is provided at the bottom end of the telescopic strip 406, and a pointed head 408 is fixedly connected to the tip of the claw 404, and the pointed head 408 is correspondingly engaged with the pressing groove 407. After the telescopic strip 406 is extended and inserted into the limiting groove 405, the pointed head 408 is separated from the pressing groove 407, and the claw 404 automatically rotates out of the groove 403, so that the claw 404 can hook the bottom edge of the filter membrane cartridge 2.

[0037] When the new filter element assembly 201 is inserted into the filter membrane cartridge 2, the supporting edge 402 is aligned with the limiting groove 405. After the new filter element assembly 201 is replaced in the position of the old filter element assembly 201, the telescopic strip 406 is inserted into the limiting groove 405, thereby fixing the filter element assembly 201 to prevent the filter element assembly 201 from rotating during subsequent use. During the extension of the telescopic strip 406, the pointed head 408 originally in the pressing groove 407 is disengaged, thereby allowing the rotary claw 404 to rotate outward, making it easier for the rotary claw 404 to hook the bottom edge of the filter membrane cartridge 2.

[0038] The second implementation method:

[0039] Compared with the first embodiment, this embodiment mainly adds a torsion tube 5, and the specific newly added structure is as follows, and the remaining structures are consistent with the first embodiment.

[0040] Figure 8-11 As shown, the water filter pipe module 302 is rotatable, and the rotation direction of the water filter pipe module 302 is opposite to the rotation direction of the vertical pipe 301. The water inlet end of the water filter pipe module 302 is fixedly connected with a torsion tube 5, and the bottom end of the torsion tube 5 is fixedly connected to the inner wall of the vertical pipe 301. The torsion tube 5 improves the sealing connection effect between the water filter pipe module 302 and the vertical pipe 301, and does not affect the rotation movement of the water filter pipe module 302 and the vertical pipe 301. The outer surface of the torsion tube 5 is fixedly connected with parallel arranged pipe ribs 501. The torsion tube 5 is made of elastic rubber material, and the pipe ribs 501 are made of tensile fiber material. When the filter pipe module 302 and the vertical pipe 301 rotate, the torsion pipe 5 is twisted and cooperates with the spiral of the pipe rib 501 to shrink the internal space of the torsion pipe 5, thereby adjusting the water flow rate of the system. The middle part of the vertical pipe 301 is fixedly connected with the flow detection module 502, and the middle part of the flow detection module 502 is fixedly connected with the flow retention pipe 503. The flow retention pipe 503 is plugged into the torsion pipe 5, and the middle part of the flow retention pipe 503 corresponds to the pipe rib 501. The flow detection module 502 is used to detect the clean water discharge flow rate of the system, and the flow retention pipe 503 supports the rotating and tightened torsion pipe 5 to maintain the minimum flow rate of the torsion pipe 5.

[0041] The water filtered by the filter element assembly 201 is collected by the filter element assembly 201 and then enters the vertical pipe 301. The vertical pipe 301 and the water filter pipe module 302 are fixedly connected by the torsion tube 5, which effectively avoids water leakage. At the same time, the torsion tube 5 can be twisted without affecting the rotational movement of water from the filter element assembly 201 and the vertical pipe 301, thereby facilitating the rotational removal of the vertical pipe 301. The flow detection module 502 is used to detect the clean water discharge flow of the system. The permeability of the filter element assembly 201 is judged by the change in flow rate combined with the liquid level height data to make a judgment on whether the filter element assembly 201 needs to be replaced. When the flow rate changes are unstable and the water quality is turbid, the clean water discharge flow rate is limited to reduce the situation of impurities adsorbing the filter element assembly 201. The flow retention tube 503 is used to maintain the minimum flow space of the torsion tube 5 to avoid complete interruption of clean water flow, which is convenient for the subsequent backwashing of the filter element assembly 201.

[0042] Figure 8 As shown, a barrel groove 6 is provided in the middle of the water outlet end cover 3, the upper diameter of the barrel groove 6 is smaller than the lower diameter, and the upper mouth of the barrel groove 6 corresponds vertically to the torsion tube 5, and a movable plug 601 is movably connected inside the barrel groove 6, and a spring 602 is fixedly connected to the bottom of the movable plug 601, and the clean water filtered by the filter element assembly 201 is concentrated by the water outlet end cover 3, and the movable plug 601 is pushed up by the spring 602 to automatically close the water outlet end cover 3 to prevent the water outlet end of the filter element assembly 201 from being contaminated, which is convenient for the storage of the filter element assembly 201 and the contamination of the old filter element assembly 201 during the floating and taking out process, and the bottom end of the flow-preserving tube 503 extends into the barrel groove 6, and the flow-preserving tube 503 is connected in abutment with the middle part of the top of the movable plug 601, and after the vertical pipe 301 is threadedly connected with the water outlet end cover 3, the flow-preserving tube 503 extends into the barrel groove 6, pressing the movable plug 601 to descend, so as to facilitate the input of clean water into the vertical pipe 301;

[0043] When the vertical pipe 301 rotates to separate from the old filter element assembly 201, the flow retaining tube 503 is pulled out of the barrel groove 6, and then the spring 602 pushes the upward movable plug 601 to close the water outlet end cover 3, thereby realizing the closed protection of the filter element assembly 201, effectively preventing the old filter element assembly 201 from being contaminated during the floating and removing process, and facilitating the recycling of the filter element assembly 201.

[0044] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A desktop ultrafiltration system for convenient membrane replacement, characterized in that: The invention comprises a housing (1), wherein a water inlet pipe module (101) and a concentrated water pipe module (102) are fixedly connected at the top and bottom of one end of the housing (1), respectively; a liquid level sensing module (103) is fixedly connected between the water inlet pipe module (101) and the concentrated water pipe module (102); a filter membrane cartridge (2) is fixedly connected at the top of the other end of the housing (1); a filter element assembly (201) is sleeved inside the filter membrane cartridge (2); a water outlet end cover (3) is fixedly connected at the top of the filter element assembly (201); a vertical pipe (301) is threadedly connected at the middle of the water outlet end cover (3); a water filter pipe module (302) is movably connected at the top of the vertical pipe (301); and the top of the water filter pipe module (302) is lower in height than the water inlet pipe module (101); The top of the filter element assembly (201) is fixedly connected to a piston ring (4), the piston ring (4) is in close contact with the inner wall of the filter membrane cylinder (2), the bottom of the piston ring (4) is fixedly connected to a floating bag (401), the bottom outer wall of the filter element assembly (201) is fixedly connected to a supporting edge (402), the bottom end of the supporting edge (402) is provided with a groove (403), the inside of the groove (403) is rotatably connected to a rotary claw (404), the rotary claw (404) is fixedly connected to the inner wall of the filter element assembly (201), and the rotary claw (404) is fixedly connected to the inner wall of the filter element assembly (201). 4) corresponding to the bottom edge of the filter membrane cartridge (2), a limit groove (405) is provided on the bottom inner wall of the filter membrane cartridge (2), the support edge (402) corresponds to the limit groove (405), a telescopic strip (406) is movably connected to the middle of the support edge (402), a pressing groove (407) is provided at the bottom end of the telescopic strip (406), and a pointed head (408) is fixedly connected to the tip of the claw (404), and the pointed head (408) is correspondingly engaged with the pressing groove (407).

2. A desktop ultrafiltration system for convenient membrane replacement according to claim 1, characterized in that: The interior of the piston ring (4) is arranged in a honeycomb shape, and the interior of the piston ring (4) is filled with air.

3. A desktop ultrafiltration system for convenient membrane replacement according to claim 1, characterized in that: The water filter pipe module (302) is rotatably arranged, and the rotation direction of the water filter pipe module (302) is arranged opposite to the rotation direction of the vertical pipe (301). The water inlet end of the water filter pipe module (302) is fixedly connected to a twisting pipe (5), and the bottom end of the twisting pipe (5) is fixedly connected to the inner wall of the vertical pipe (301).

4. A desktop ultrafiltration system for convenient membrane replacement according to claim 3, characterized in that: The outer surface of the torsion tube (5) is fixedly connected with parallel-arranged tube ribs (501); the torsion tube (5) is made of elastic rubber material, and the tube ribs (501) are made of tensile-resistant fiber material.

5. A desktop ultrafiltration system for convenient membrane replacement according to claim 4, characterized in that: The middle of the vertical pipe (301) is fixedly connected to a flow detection module (502), the middle of the flow detection module (502) is fixedly connected to a flow retention tube (503), the flow retention tube (503) is plugged into the torsion tube (5), and the middle of the flow retention tube (503) corresponds to the tube rib (501).

6. A desktop ultrafiltration system for convenient membrane replacement according to claim 5, characterized in that: A barrel groove (6) is provided in the middle of the water outlet end cover (3); the upper diameter of the barrel groove (6) is smaller than the lower diameter, and the upper opening of the barrel groove (6) vertically corresponds to the torsion tube (5); a movable plug (601) is movably connected inside the barrel groove (6), and a spring (602) is fixedly connected to the bottom of the movable plug (601).

7. A desktop ultrafiltration system for convenient membrane replacement according to claim 6, characterized in that: The bottom end of the flow retaining tube (503) extends into the barrel groove (6), and the flow retaining tube (503) is in contact with the middle of the top end of the movable plug (601).

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