Purified water ultrafiltration apparatus

Abstract

The application relates to the technical field of purified water processing, and discloses a purified water ultrafiltration equipment, which comprises a base frame, a lower fixing frame is fixedly connected to the top of the base frame, a drain pipe is fixedly connected to the bottom of the lower fixing frame, a first filter pipe is inserted into the lower fixing frame, a second filter pipe is arranged at the top end of the first filter pipe, and a third filter pipe is arranged at the top end of the second filter pipe. The purified water ultrafiltration equipment can separately disassemble and replace the first filter pipe, the second filter pipe and the third filter pipe, saves time, improves efficiency, facilitates the disassembly, replacement and cleaning of the first filter pipe, the second filter pipe and the third filter pipe, improves the convenience of replacing and cleaning the ultrafiltration equipment, and facilitates the neat arrangement and use of multiple ultrafiltration equipment, facilitating the neat arrangement of the multiple ultrafiltration equipment by workers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of purified water processing, in particular to a purified water ultrafiltration equipment. BACKGROUND

[0002] The purified water generally refers to deep desalinated water, and the production of the purified water is mainly completed through the following steps of pretreatment, water quality adjustment, main treatment and post-treatment.

[0003] At present, the common purified water ultrafiltration equipment on the market adopts ultrafiltration membranes for filtration, and one set of ultrafiltration membranes or multiple sets of ultrafiltration membranes are combined for ultrafiltration in a device. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the defects in the prior art, the present application provides a purified water ultrafiltration equipment, which mainly solves the problem that multiple sets of ultrafiltration membranes need to be disassembled for replacement, especially the bottommost ultrafiltration membrane, which leads to low replacement efficiency.

[0006] (II) Technical scheme

[0007] To achieve the above-mentioned purposes, the present application provides the following technical scheme:

[0008] The utility model provides a kind of purified water ultrafiltration equipment, including chassis, the top of the chassis is fixedly connected with lower fixed frame, the bottom of lower fixed frame is fixedly connected with drain pipe, the first filter pipe is inserted into in lower fixed frame, the top of first filter pipe is equipped with second filter pipe, the top of second filter pipe is equipped with third filter pipe, the bottom of second filter pipe and third filter pipe is fixedly connected with positioning ring, the circumferential inner wall of first filter pipe and second filter pipe is located at the top and is equipped with positioning groove, and positioning ring is inserted with positioning groove, one side of the chassis is fixedly connected with connecting frame, the top of connecting frame is fixedly connected with the fixed pipe that passes through connecting frame, the top of fixed pipe is fixedly connected with inlet pipe, the fixed pipe is slidably connected with threaded pipe, the bottom of threaded pipe is fixedly connected with upper cover, and upper cover is inserted with third filter pipe, the bottom of fixed pipe is rotatably connected with hexagonal block, and threaded pipe passes through hexagonal block and is threadedly connected with hexagonal block, one side of the connecting frame is equipped with locking assembly for fixing first filter pipe, second filter pipe and third filter pipe, both sides of the connecting frame are equipped with connecting assembly, so that multiple ultrafiltration equipment is connected, the locking assembly includes two first fixed rings, two first fixed rings are fixedly connected on the side of connecting frame close to first filter pipe, one side of the connecting frame is equipped with the sliding slot that passes through connecting frame, first sliding rod and second sliding rod are slidably connected in sliding slot, and the top of second sliding rod presses first sliding rod, one side of second sliding rod close to third filter pipe is fixedly connected with two third fixed rings, one side of first sliding rod close to second filter pipe is fixedly connected with two second fixed rings, one side of two first fixed rings, two second fixed rings and two third fixed rings is equipped with mounting ring, the mounting ring is connected with first fixed ring, second fixed ring and third fixed ring by connecting component, one side of the connecting frame is equipped with the plug-in assembly for fixing first sliding rod and second sliding rod after moving.

[0009] On the basis of the foregoing scheme, the connecting component is bolt, one side of two first fixed rings, two second fixed rings, two third fixed rings and multiple mounting rings is equipped with two fixed holes, the bolt passes through the fixed hole of mounting ring, first fixed ring, second fixed ring and third fixed ring in alignment, and mounting ring is locked with first fixed ring, second fixed ring and third fixed ring.

[0010] As a further scheme of the present application, the plug-in assembly comprises an L-shaped plate fixedly connected to one side of the connecting frame near the top, one side of the L-shaped plate is fixedly connected with two springs, one end of each of the two springs is fixedly connected with a first plug-in frame and a second plug-in frame, one side of the connecting frame is provided with two sliding holes communicating with the sliding grooves, the first plug-in frame and the second plug-in frame pass through the two sliding holes respectively, one end of the first sliding rod is provided with a second insertion slot, one end of the second sliding rod is provided with a first insertion slot, and one side of the connecting frame is provided with a pushing assembly for moving the first plug-in frame and the second plug-in frame.

[0011] Further, the pushing assembly comprises a guide frame slidingly connected to one side of the connecting frame and located below the L-shaped plate, one side of the guide frame is provided with two inclined surfaces, the top of the guide frame is provided with a mounting slot, and a magnetic block is fixedly connected in the mounting slot and is attracted to the L-shaped plate.

[0012] On the basis of the foregoing scheme, the connecting assembly comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are rotatably connected to both sides of the connecting frame at the bottom, the top end of the second connecting rod is fixedly connected with a connecting head, the top end of the first connecting rod is provided with a clamping groove matched with the connecting head, one side of the connecting frame is fixedly connected with a sliding frame, and the outer side of the sliding frame is slidingly connected with a U-shaped frame, so that the first connecting rod and the second connecting rod are limited.

[0013] As a further scheme of the present application, one side of the first sliding rod and the second sliding rod is provided with a plurality of guide grooves, and a fixed rod is arranged in each of the two communicating guide grooves and is fixed to the connecting frame.

[0014] Further, two placing grooves are formed in the circumferential inner wall of the fixed tube, and a sealing ring is fixedly connected in each of the two placing grooves.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the present application provides a purified water ultrafiltration equipment, which has the following beneficial effects:

[0017] 1. Through the cooperation of the first sliding rod and the second sliding rod, the second sliding rod can move the third filter pipe upward, so that the second filter pipe can be disassembled, and the first sliding rod can move the second filter pipe and the third filter pipe upward, so that the first filter pipe can be disassembled alone, which facilitates the workers to disassemble and replace the first filter pipe, the second filter pipe and the third filter pipe individually, saves time and improves efficiency.

[0018] 2、Through the setting of the locking assembly, the locking assembly is used for locking and fixing the first filter pipe, the second filter pipe and the third filter pipe, the detachable connection of the first filter pipe, the second filter pipe and the third filter pipe is realized, so that the first filter pipe, the second filter pipe and the third filter pipe are conveniently disassembled, replaced or cleaned, and the convenience of replacement and cleaning of the ultrafiltration equipment is improved.

[0019] 3、Through the setting of the connecting assembly, the connecting assembly can connect multiple ultrafiltration equipments, so that the multiple ultrafiltration equipments are conveniently arranged in order for use, and the multiple ultrafiltration equipments are conveniently arranged in order by the staff. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A front side three-dimensional structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0021] Figure 2 A rear side three-dimensional structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0022] Figure 3 An exploded structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0023] Figure 4 A partial cross-sectional structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0024] Figure 5 A first connecting rod enlarged structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0025] Figure 6 A fixed pipe enlarged structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0026] Figure 7 A fixed pipe cross-sectional structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0027] Figure 8 An insertion frame enlarged structure schematic diagram of the purified water ultrafiltration equipment is provided for the application.

[0028] In the figure: 1, the base frame; 2, the lower fixed frame; 3, the first filter pipe; 4, the second filter pipe; 5, the connecting frame; 6, the third filter pipe; 7, the upper cover; 8, the fixed pipe; 9, the water inlet pipe; 10, the drain pipe; 11, the first fixed ring; 12, the second fixed ring; 13, the third fixed ring; 14, the first sliding rod; 15, the second sliding rod; 16, the positioning ring; 17, the positioning groove; 18, the mounting ring; 19, the connecting component; 20, the fixed rod; 21, the guide groove; 22, the sliding frame; 23, the U-shaped frame; 24, the sliding groove; 25, the first connecting rod; 26, the second connecting rod; 27, the connecting head; 28, the clamping groove; 29, the hexagonal block; 30, the threaded pipe; 31, the guide frame; 32, the placing groove; 33, the sealing ring; 34, the magnetic block; 35, the spring; 36, the L-shaped plate; 37, the first insertion slot; 38, the second insertion slot; 39, the first insertion frame; 40, the sliding hole; 41, the second insertion frame. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0030] REFERENCE Figures 1-8The utility model provides a kind of purified water ultrafiltration equipment, including chassis 1, the top of chassis 1 is welded with lower fixed frame 2, the bottom of lower fixed frame 2 is welded with drain pipe 10, first filter tube 3 is inserted into lower fixed frame 2, the top of first filter tube 3 is equipped with second filter tube 4, the top of second filter tube 4 is equipped with third filter tube 6, and ultrafiltration membrane is equipped in first filter tube 3, second filter tube 4 and third filter tube 6, the bottom of second filter tube 4 and third filter tube 6 is welded with positioning ring 16, the circumferential inner wall of first filter tube 3 and second filter tube 4 is located at the position of top and is equipped with positioning groove 17, and positioning ring 16 is inserted with positioning groove 17, one side of chassis 1 is welded with connecting frame 5, the top of connecting frame 5 is fixed with fixed pipe 8 penetrating connecting frame 5 by bolt, the top of fixed pipe 8 is welded with water inlet pipe 9, screw pipe 30 is slidably connected in fixed pipe 8, upper cover 7 is welded at the bottom of screw pipe 30, and upper cover 7 is inserted with third filter tube 6, the bottom of fixed pipe 8 is rotatably connected with hexagonal block 29, and screw pipe 30 passes through hexagonal block 29 and is threadedly connected with hexagonal block 29, one side of connecting frame 5 is equipped with locking assembly for fixing first filter tube 3, second filter tube 4 and third filter tube 6, both sides of connecting frame 5 are equipped with connecting assembly, so that multiple ultrafiltration equipment is connected, the ultrafiltration membrane in third filter tube 6 filters and purifies water, and the water filtered and purified enters second filter tube 4 again to be filtered and purified by ultrafiltration membrane, then is filtered and purified by the ultrafiltration membrane in first filter tube 3, and finally is discharged through drain pipe 10, so that water is filtered and purified multiple times, the filtering effect of water can be improved, and after long time use, since third filter tube 6 filters water first, the pollution degree of ultrafiltration membrane in second filter tube 4 and first filter tube 3 can be reduced, so that the ultrafiltration membrane in second filter tube 4 and first filter tube 3 still has good filtering effect, two placing grooves 32 are formed in the circumferential inner wall of fixed pipe 8, sealing ring 33 is bonded in two placing grooves 32, and sealing ring 33 contacts screw pipe 30, and sealing ring 33 can seal the gap between screw pipe 30 and fixed pipe 8.

[0031] The locking assembly comprises two first fixing rings 11, both of which are welded on one side of the connecting frame 5 close to the first filter pipe 3, one side of the connecting frame 5 is provided with a sliding groove 24 penetrating through the connecting frame 5, the first sliding rod 14 and the second sliding rod 15 are slidingly connected in the sliding groove 24, and the top of the second sliding rod 15 presses the first sliding rod 14, two third fixing rings 13 are welded on one side of the second sliding rod 15 close to the third filter pipe 6, two second fixing rings 12 are welded on one side of the first sliding rod 14 close to the second filter pipe 4, one side of the two first fixing rings 11, the two second fixing rings 12 and the two third fixing rings 13 is provided with a mounting ring 18, the mounting ring 18 is connected with the first fixing ring 11, the second fixing ring 12 and the third fixing ring 13 through a connecting component 19, one side of the connecting frame 5 is provided with an insertion assembly for fixing the first sliding rod 14 and the second sliding rod 15 after moving, the connecting component 19 is a bolt, one side of the two first fixing rings 11, the two second fixing rings 12, the two third fixing rings 13 and the plurality of mounting rings 18 is provided with two fixing holes, the bolt penetrates through the fixing holes of the mounting ring 18 and the first fixing ring 11, the second fixing ring 12 and the third fixing ring 13 aligned, the mounting ring 18 is locked with the first fixing ring 11, the second fixing ring 12 and the third fixing ring 13, when it is needed to disassemble the first filter pipe 3, the second filter pipe 4 and the third filter pipe 6, the hexagonal block 29 is rotated, the hexagonal block 29 is engaged with the threaded pipe 30 through the thread, so that the threaded pipe 30 moves into the fixed pipe 8, the threaded pipe 30 drives the upper cover 7 to move, so that the upper cover 7 is separated from the third filter pipe 6, when the upper cover 7 moves to the appropriate position, the bolt is disassembled, at this time, the mounting ring 18 can be separated from the first fixing ring 11, the second fixing ring 12 and the third fixing ring 13, then the third filter pipe 6 can be pulled to move upwards, so that the positioning ring 16 on the third filter pipe 6 is separated from the positioning groove 17 on the second filter pipe 4, then the second filter pipe 4 is pulled to move upwards, so that the positioning ring 16 on the second filter pipe 4 is separated from the positioning groove 17 on the first filter pipe 3, finally the first filter pipe 3 is pulled to move upwards, so that the first filter pipe 3 is separated from the lower fixed frame 2, thereby the first filter pipe 3, the second filter pipe 4 and the third filter pipe 6 are disassembled, when it is needed to disassemble the second filter pipe 4 alone, the upper cover 7 is separated from the third filter pipe 6 and moved to the appropriate position, at this time, the second sliding rod 15 can be pulled to move upwards, the second sliding rod 15 drives the third fixing ring 13 to move upwards, at this time, the third filter pipe 6 is locked and fixed by the cooperation of the third fixing ring 13 and the mounting ring 18, so that the third filter pipe 6 is moved upwards, so that the positioning ring 16 on the third filter pipe 6 is separated from the positioning groove 17 on the second filter pipe 4, at this time, the mounting ring 18 on the second filter pipe 4 can be disassembled, so that the second filter pipe 4 can be disassembled, at the same time, the mounting ring 18 on the first filter pipe 3 can be disassembled, so that the first filter pipe 3 can be disassembled, when it is needed to disassemble the first filter pipe 3 alone,First, the upper cover 7 is separated from the third filter tube 6 and moved to a suitable position, then the first slide rod 14 is pulled up to move, at this time, the third filter tube 6 is locked and fixed due to the cooperation of the third fixed ring 13 and the mounting ring 18, the second filter tube 4 is locked and fixed due to the cooperation of the second fixed ring 12 and the mounting ring 18, at this time, the first slide rod 14 will drive the second filter tube 4 to move up through the second fixed ring 12, the second filter tube 4 will drive the third filter tube 6 to move up, so that the positioning ring 16 on the second filter tube 4 is separated from the positioning groove 17 on the first filter tube 3, then the mounting ring 18 on the first filter tube 3 is disassembled, and the first filter tube 3 can be disassembled alone.

[0032] In the application, the insertion assembly comprises an L-shaped plate 36 welded on one side of the connecting frame 5 near the top, two springs 35 welded on one side of the L-shaped plate 36, a first insertion frame 39 and a second insertion frame 41 welded on one end of the two springs 35 respectively, two sliding holes 40 communicated with the sliding grooves 24 formed on one side of the connecting frame 5, the first insertion frame 39 and the second insertion frame 41 passing through the two sliding holes 40 respectively, a second insertion groove 38 formed on one end of the first sliding rod 14 and adapted to the second insertion frame 41, a first insertion groove 37 formed on one end of the second sliding rod 15 and adapted to the first insertion frame 39, a pushing assembly arranged on one side of the connecting frame 5 and used for moving the first insertion frame 39 and the second insertion frame 41, the pushing assembly comprising a guide frame 31 slidably connected to one side of the connecting frame 5 and located below the L-shaped plate 36, two inclined surfaces arranged on one side of the guide frame 31 and in contact with the first insertion frame 39 and the second insertion frame 41 respectively, and a mounting groove formed on the top of the guide frame 31 and having a magnetic block 34 adhered thereto and attracted to the L-shaped plate 36, wherein, during the upward movement of the second sliding rod 15, the guide frame 31 is pulled to move downward, the guide frame 31 pushes the first insertion frame 39 and the second insertion frame 41 to move through the inclined surfaces thereof, the first insertion frame 39 and the second insertion frame 41 are pressed against the springs 35, and when the second sliding rod 15 is moved to a proper position, the guide frame 31 is released, and the first insertion frame 39 and the second insertion frame 41 are reset under the action of the springs 35, so that the second insertion frame 41 is inserted into the first insertion groove 37 to fix the position of the second sliding rod 15, during the movement of the first sliding rod 14, the first sliding rod 14 drives the second sliding rod 15 to move upward and pulls the guide frame 31 to move downward and press the first insertion frame 39 and the second insertion frame 41 against the springs 35, and when the first sliding rod 14 is moved to a proper position, the first insertion frame 39 and the second insertion frame 41 are reset by the action force of the springs 35, so that the first insertion frame 39 is inserted into the first insertion groove 37 and the second insertion frame 41 is inserted into the second insertion groove 38, thereby fixing the positions of the first sliding rod 14 and the second sliding rod 15, and the connecting assembly comprises a first connecting rod 25 and a second connecting rod 26 rotatably connected to the connecting frame 5 at positions on two sides of the connecting frame 5 and located at the bottom, a connecting head 27 welded on the top end of the second connecting rod 26, a clamping groove 28 formed on the top end of the first connecting rod 25 and adapted to the connecting head 27, a sliding frame 22 welded on one side of the connecting frame 5, and a U-shaped frame 23 slidably connected to the outside of the sliding frame 22 and used for limiting the first connecting rod 25 and the second connecting rod 26, wherein, the U-shaped frame 23 is pulled to move upward, so that the U-shaped frame 23 no longer limits the first connecting rod 25 and the second connecting rod 26, the first connecting rod 25 and the second connecting rod 26 are then rotated, and the connecting head 27 on the second connecting rod 26 of another ultrafiltration equipment is clamped into the clamping groove 28 on the first connecting rod 25 of the ultrafiltration equipment,Thus, the two ultrafiltration devices are connected, and the two ultrafiltration devices are neatly arranged. The first sliding rod 14 and the second sliding rod 15 are provided with a plurality of guide grooves 21 on one side. The two guide grooves 21 in communication are each provided with a fixed rod 20, and the fixed rod 20 is fixed with the connecting frame 5. The fixed rod 20 can resist and position the first sliding rod 14 and the second sliding rod 15.

[0033] The working principle of the embodiment is as follows: when in use, water is added through the water inlet pipe 9, and the added water enters the third filter pipe 6 through the threaded pipe 30. The ultrafiltration membrane in the third filter pipe 6 filters and purifies the water. The filtered and purified water enters the second filter pipe 4 and is filtered and purified again by the ultrafiltration membrane. Then, the water is filtered and purified by the ultrafiltration membrane in the first filter pipe 3. Finally, the water is discharged through the drain pipe 10, so that the water is filtered and purified multiple times, which can improve the filtering effect of the water. At the same time, after long-term use, since the third filter pipe 6 first filters the water, the pollution degree of the ultrafiltration membranes in the second filter pipe 4 and the first filter pipe 3 can be reduced, so that the ultrafiltration membranes in the second filter pipe 4 and the first filter pipe 3 still have good filtering effect. When the first filter pipe 3, the second filter pipe 4 and the third filter pipe 6 need to be disassembled, the hexagonal block 29 is rotated, and the hexagonal block 29 moves the threaded pipe 30 into the fixed pipe 8 through the threaded engagement with the threaded pipe 30. The threaded pipe 30 moves the upper cover 7, so that the upper cover 7 is separated from the third filter pipe 6. When the upper cover 7 is moved to the appropriate position, the bolts are disassembled. At this time, the mounting ring 18 can be separated from the first fixing ring 11, the second fixing ring 12 and the third fixing ring 13. Then, the third filter pipe 6 can be pulled upwards to separate the positioning ring 16 on the third filter pipe 6 from the positioning groove 17 on the second filter pipe 4. Then, the second filter pipe 4 is pulled upwards to separate the positioning ring 16 on the second filter pipe 4 from the positioning groove 17 on the first filter pipe 3. Finally, the first filter pipe 3 is pulled upwards to separate the first filter pipe 3 from the lower fixed frame 2, so that the first filter pipe 3, the second filter pipe 4 and the third filter pipe 6 are disassembled. When the second filter pipe 4 needs to be disassembled alone, the upper cover 7 is first separated from the third filter pipe 6 and moved to the appropriate position. At this time, the second slide rod 15 can be pulled upwards. The second slide rod 15 moves the third fixing ring 13 upwards. At this time, since the third fixing ring 13 and the mounting ring 18 cooperate to lock and fix the third filter pipe 6, the third filter pipe 6 is moved upwards, so that the positioning ring 16 on the third filter pipe 6 is separated from the positioning groove 17 on the second filter pipe 4. At this time, the mounting ring 18 on the second filter pipe 4 can be disassembled, so that the second filter pipe 4 can be disassembled. At the same time, the mounting ring 18 on the first filter pipe 3 can be disassembled, so that the first filter pipe 3 can be disassembled. When the first filter pipe 3 needs to be disassembled alone, the upper cover 7 is first separated from the third filter pipe 6 and moved to the appropriate position. Then, the first slide rod 14 is pulled upwards. At this time, since the third fixing ring 13 and the mounting ring 18 cooperate to lock and fix the third filter pipe 6, and the second fixing ring 12 and the mounting ring 18 cooperate to lock and fix the second filter pipe 4, the first slide rod 14 moves the second filter pipe 4 upwards through the second fixing ring 12. The second filter pipe 4 moves the third filter pipe 6 upwards,Thus, the positioning ring 16 on the second filter tube 4 is separated from the positioning groove 17 on the first filter tube 3, and then the mounting ring 18 on the first filter tube 3 is disassembled, so that the first filter tube 3 can be individually disassembled, time is saved, and efficiency is improved.

[0034] The electrical components in the present application are all connected with the main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer.

[0035] In the description in the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the description in the present application, it should be noted that the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A purified water ultrafiltration apparatus comprising a base frame (1), characterized in that, The bottom of the lower fixing frame (2) is fixedly connected with a drain pipe (10), the lower fixing frame (2) is inserted with a first filter pipe (3), the top end of the first filter pipe (3) is provided with a second filter pipe (4), the top end of the second filter pipe (4) is provided with a third filter pipe (6), the first filter pipe (3), the second filter pipe (4) and the third filter pipe (6) are all provided with ultrafiltration membranes, the bottom end of the second filter pipe (4) and the third filter pipe (6) is fixedly connected with a positioning ring (16), the circumferential inner wall of the first filter pipe (3) and the second filter pipe (4) is provided with a positioning groove (17) at the top, and the positioning ring (16) is inserted with the positioning groove (17), one side of the bottom frame (1) is fixedly connected with a connecting frame (5), the top of the connecting frame (5) is fixedly connected with a fixed pipe (8) penetrating through the connecting frame (5), the top end of the fixed pipe (8) is fixedly connected with a water inlet pipe (9), the fixed pipe (8) is slidably connected with a threaded pipe (30), the bottom end of the threaded pipe (30) is fixedly connected with an upper cover (7), and the upper cover (7) is inserted with the third filter pipe (6), the bottom end of the fixed pipe (8) is rotatably connected with a hexagonal block (29), and the threaded pipe (30) penetrates through the hexagonal block (29) and is threadedly connected with the hexagonal block (29), one side of the connecting frame (5) is provided with a locking assembly for fixing the first filter pipe (3), the second filter pipe (4) and the third filter pipe (6), both sides of the connecting frame (5) are provided with connecting assemblies, so that a plurality of ultrafiltration devices are connected, the locking assembly comprises two first fixing rings (11), both the first fixing rings (11) are fixedly connected on one side of the connecting frame (5) close to the first filter pipe (3), one side of the connecting frame (5) is provided with a sliding groove (24) penetrating through the connecting frame (5), the sliding groove (24) is slidably connected with a first sliding rod (14) and a second sliding rod (15), and the top of the second sliding rod (15) presses the first sliding rod (14), one side of the second sliding rod (15) close to the third filter pipe (6) is fixedly connected with two third fixing rings (13), one side of the first sliding rod (14) close to the second filter pipe (4) is fixedly connected with two second fixing rings (12), one side of both the first fixing rings (11), both the second fixing rings (12) and both the third fixing rings (13) is provided with a mounting ring (18), the mounting ring (18) is connected with the first fixing ring (11), the second fixing ring (12) and the third fixing ring (13) through a connecting part (19), one side of the connecting frame (5) is provided with an insertion assembly for fixing the first sliding rod (14) and the second sliding rod (15) after moving; Water is added through the water inlet pipe (9), and the added water enters the third filter pipe (6) through the threaded pipe (30); the water filtered and purified through the ultrafiltration membrane in the first filter pipe (3) is discharged through the drain pipe (10).

2. The purified water ultrafiltration apparatus according to claim 1, wherein The connecting component (19) is a bolt, two first fixing rings (11), two second fixing rings (12), two third fixing rings (13) and one side of a plurality of mounting rings (18) are provided with two fixing holes, the bolt passes through the fixing holes of the mounting ring (18) and the first fixing ring (11), the second fixing ring (12) and the third fixing ring (13) aligned fixing hole, the mounting ring (18) and the first fixing ring (11), the second fixing ring (12) and the third fixing ring (13) are locked.

3. The purified water ultrafiltration apparatus according to claim 1, wherein The insertion assembly comprises an L-shaped plate (36) fixedly connected to one side of the connecting frame (5) near the top, two springs (35) fixedly connected to one side of the L-shaped plate (36), a first insertion frame (39) and a second insertion frame (41) fixedly connected to one end of the two springs (35) respectively, two slide holes (40) communicated with the sliding groove (24) formed on one side of the connecting frame (5), the first insertion frame (39) and the second insertion frame (41) passing through the two slide holes (40) respectively, a second insertion slot (38) formed at one end of the first sliding rod (14), and the second insertion frame (41) inserted into the second insertion slot (38), a first insertion slot (37) formed at one end of the second sliding rod (15), and the first insertion frame (39) inserted into the first insertion slot (37), and a pushing assembly provided on one side of the connecting frame (5) for moving the first insertion frame (39) and the second insertion frame (41).

4. The purified water ultrafiltration apparatus according to claim 3, wherein The pushing assembly comprises a guide frame (31) slidably connected to one side of the connecting frame (5), and the guide frame (31) is located below the L-shaped plate (36), two inclined surfaces are provided on one side of the guide frame (31) and in contact with the first insertion frame (39) and the second insertion frame (41) respectively, an installation slot is formed at the top of the guide frame (31), a magnetic block (34) is fixedly connected in the installation slot, and the magnetic block (34) is attracted to the L-shaped plate (36).

5. The purified water ultrafiltration apparatus according to claim 1, wherein The connecting assembly comprises a first connecting rod (25) and a second connecting rod (26), the first connecting rod (25) and the second connecting rod (26) are rotatably connected to the connecting frame (5) on both sides at the bottom, a connecting head (27) is fixedly connected to the top end of the second connecting rod (26), a clamping groove (28) is formed at the top end of the first connecting rod (25) and matched with the connecting head (27) on the second connecting rod (26) of another ultrafiltration device, a sliding frame (22) is fixedly connected to one side of the connecting frame (5), and a U-shaped frame (23) is slidably connected to the outer side of the sliding frame (22), so that the first connecting rod (25) and the second connecting rod (26) are limited.

6. The purified water ultrafiltration apparatus according to claim 1, wherein A plurality of guide grooves (21) are formed on one side of the first sliding rod (14) and the second sliding rod (15), and a fixing rod (20) is arranged in each of the two guide grooves (21) in communication, and the fixing rod (20) is fixed to the connecting frame (5).

7. The purified water ultrafiltration apparatus according to claim 1, wherein The circumferential inner wall of the fixed pipe (8) is provided with two placing grooves (32), and the two placing grooves (32) are fixedly connected with sealing rings (33).

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