A water treatment nanofiltration apparatus

Abstract

This utility model relates to the field of water treatment technology, specifically to a nanofiltration device for water treatment, including an installation tank and a filter element. The installation tank has two sets of symmetrically distributed end caps at both ends, and a quick positioning mechanism for filter element installation is provided inside the installation tank. The quick positioning mechanism includes two sets of symmetrically distributed installation rings rotatably installed inside the installation tank, and two sets of symmetrically distributed positioning grooves on the filter element. Geared rings are fitted onto the installation rings, and multiple sets of annularly distributed positioning plates are provided around the installation rings. By setting up a quick positioning mechanism and a locking mechanism, the quick installation and replacement of the filter element is achieved. The linkage design of the installation rings, geared rings, and the first gear allows multiple sets of positioning plates to rotate synchronously and engage with the filter element positioning grooves. The ratchet and pawl locking mechanism ensures reliable fixation, effectively solving the problem in the prior art where filter element replacement requires special tools or adapter parts.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically to a nanofiltration device for water treatment. Background Technology

[0002] Nanofiltration equipment for water treatment is a membrane separation technology that falls between ultrafiltration and reverse osmosis. It is widely used in drinking water purification, industrial wastewater treatment, material separation, and water softening. Due to its selective separation characteristics, nanofiltration membranes can effectively retain divalent ions, organic matter, and macromolecules, while allowing some monovalent ions to pass through. It has a low operating pressure and a high energy efficiency ratio. However, in actual operation, nanofiltration membranes are susceptible to the effects of pollutants such as influent turbidity, colloids, and organic matter, which can lead to a decrease in membrane flux, frequent cleaning, or even damage to membrane elements, affecting the long-term stable operation of the system.

[0003] Existing nanofiltration equipment is usually designed for a single type of filter cartridge. When the processing requirements change, such as adjusting the flux or molecular weight cutoff, and different diameter filter cartridges need to be replaced, the filter housing or adapter parts often need to be replaced as well, which increases costs and makes the operation cumbersome. In addition, the existing filter cartridge fixing methods mostly rely on bolt tightening or sealing ring pressing. Replacement requires special tools or multiple people to cooperate, which takes a long time, especially in industrial scenarios, which may affect continuous production. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a nanofiltration device for water treatment, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a water treatment nanofiltration device, comprising an installation tank and a filter element, wherein two sets of symmetrically distributed end caps are installed at both ends of the installation tank, an inlet and an outlet are fixedly installed on the installation tank, and a clean water outlet is fixedly installed in the middle of the installation tank, the inlet and outlet are symmetrically distributed at both ends of the filter element, and a quick positioning mechanism for filter element installation is provided inside the installation tank.

[0008] The quick positioning mechanism includes two sets of symmetrically distributed mounting rings rotatably mounted inside the mounting tank, and two sets of positioning grooves symmetrically distributed on the filter element. A toothed ring is sleeved on the mounting ring, and multiple sets of annularly distributed positioning plates are provided around the mounting ring. The multiple sets of positioning plates are rotatably connected to the mounting tank through mounting shafts. A first gear is sleeved on each of the multiple sets of mounting shafts, and the multiple sets of first gears are meshed with the toothed rings. A locking mechanism for locking the mounting shaft is provided inside the mounting tube. The locking mechanism includes two sets of ratchet wheels symmetrically sleeved on one set of mounting shafts, and pawls corresponding to the two sets of ratchet wheels.

[0009] Preferably, the two sets of positioning grooves are distributed correspondingly to the mounting ring, and multiple sets of positioning plates are movably engaged with the filter element through the corresponding positioning grooves.

[0010] Preferably, the two sets of pawls are respectively engaged with the corresponding ratchet wheels, and both sets of pawls are rotatably connected to the mounting can via rotating rods. A first torsion spring is sleeved on the rotating rod, and the two ends of the first torsion spring are respectively fixedly connected to the pawl and the mounting can. A second gear is sleeved on both sets of rotating rods, and two sets of racks corresponding to the second gears are slidably installed inside the mounting can, and the two sets of racks are respectively engaged with the corresponding second gears.

[0011] Preferably, a puller is slidably installed inside the installation tank, and the puller is fixedly connected to two sets of racks respectively. A sliding rod corresponding to the puller is fixedly installed inside the installation tank, and the puller and the sliding rod are slidably sleeved together.

[0012] Preferably, two sets of symmetrically distributed springs are sleeved on the slide rod, and the two ends of the two sets of springs are respectively fixedly connected to the pull frame and the mounting tank, and a positioning block is fixedly installed on the pull frame.

[0013] Preferably, a positioning rod corresponding to the positioning block is fixedly installed inside the installation tank, and two sets of symmetrically distributed positioning frames are sleeved on the positioning rod, and the two sets of positioning frames are respectively movably engaged with the positioning block.

[0014] Preferably, two sets of symmetrically distributed second torsion springs are sleeved on the positioning rod, and the two ends of the second torsion springs are fixedly connected to the corresponding positioning frame and the positioning rod, respectively.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a nanofiltration device for water treatment, which has the following beneficial effects:

[0017] By incorporating a quick positioning and locking mechanism, rapid installation and replacement of filter elements are achieved. The linkage design of the installation ring, gear ring, and first gear allows multiple positioning plates to rotate synchronously and engage with the filter element positioning groove. Combined with the ratchet and pawl locking mechanism, reliable fixation is ensured, effectively solving the problem of requiring special tools or compatible parts for filter element replacement in existing technologies. The specially designed pull frame and rack and pinion transmission system can simultaneously release the locks on both sides with a single pull. Combined with the spring and first torsion spring reset structure and the self-locking function of the positioning frame, the replacement of filter elements of different diameters can be completed in a short time, significantly reducing downtime in industrial settings. At the same time, the symmetrical inlet and outlet design of the installation tank and the centrally located layout of the purified water outlet can accommodate filter elements with different flow requirements without modifying the piping system, thus reducing overall equipment modification costs. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the rapid positioning mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of a partially disassembled structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the locking mechanism of this utility model.

[0023] In the diagram: 1. Installation tank; 2. End cap; 3. Water inlet; 4. Clean water outlet; 5. Drain outlet; 6. Filter element; 7. Quick positioning mechanism; 701. Installation ring; 702. Gear ring; 703. Positioning plate; 704. Installation shaft; 705. First gear; 706. Positioning groove; 8. Locking mechanism; 801. Ratchet; 802. Pawl; 803. Rotating rod; 804. First torsion spring; 805. Second gear; 806. Rack; 807. Pull bracket; 808. Slide rod; 809. Spring; 810. Positioning block; 811. Positioning rod; 812. Positioning frame; 813. Second torsion spring. Detailed Implementation

[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0025] Figures 1-4In one embodiment of this utility model, a nanofiltration device for water treatment includes an installation tank 1 and a filter element 6. Two sets of symmetrically distributed end caps 2 are installed at both ends of the installation tank 1. An inlet 3 and an outlet 5 are fixedly installed on the installation tank 1, and a clean water outlet 4 is fixedly installed in the middle of the installation tank 1. The inlet 3 and outlet 5 are symmetrically distributed at both ends of the filter element 6. A quick positioning mechanism 7 for installing the filter element 6 is provided inside the installation tank 1. The quick positioning mechanism 7 includes two sets of symmetrically distributed mounting rings 701 rotatably installed inside the installation tank 1. Two sets of positioning grooves 706 are symmetrically distributed on the filter element 6. A toothed ring 702 is sleeved on the mounting ring 701. Multiple sets of annularly distributed positioning plates 703 are provided around the mounting ring 701. The multiple sets of positioning plates 703 are rotatably connected to the mounting tank 1 through mounting shafts 704. A first gear 705 is sleeved on each of the multiple sets of mounting shafts 704. The multiple sets of first gears 705 are meshed with the toothed ring 702. A locking mechanism 8 for locking the mounting shaft 704 is provided inside the mounting tube. The locking mechanism 8 includes two sets of positioning grooves 706 symmetrically sleeved on the mounting ring 701. Two sets of ratchet wheels 801 on shaft 704, and corresponding pawls 802, enable quick installation and replacement of filter element 6 through a quick positioning mechanism 7 and a locking mechanism 8. The linkage design of the mounting ring 701, gear ring 702, and first gear 705 allows multiple positioning plates 703 to rotate synchronously and engage with the positioning groove 706 of filter element 6. The locking mechanism 8, along with the ratchet wheels 801 and pawls 802, ensures reliable fixation, effectively solving the problem that filter element 6 replacement requires special tools or adapter parts in existing technologies. To address this issue, the specially designed pull bracket 807 and rack and pinion 806 transmission system can simultaneously release the locks on both sides with a single pull. Combined with the reset structure of spring 809 and first torsion spring 804 and the self-locking function of positioning bracket 812, the replacement of filter elements 6 of different diameters can be completed in a short time, significantly reducing downtime in industrial settings. At the same time, the symmetrical inlet and outlet design of the installation tank 1 and the central layout of the clean water outlet 4 can accommodate filter elements 6 with different flow requirements without modifying the piping system, thus reducing the overall equipment modification cost.

[0026] In this embodiment, reference Figure 2 , Figure 3 As shown, two sets of positioning grooves 706 are distributed correspondingly to the mounting ring 701. Multiple sets of positioning plates 703 are movably engaged with the filter element 6 through the corresponding positioning grooves 706. When installing the filter element 6, the filter element 6 is pushed into the mounting tank 1, and the positioning grooves 706 at both ends are aligned with the positioning plates 703 on the mounting ring 701. At this time, the mounting shaft 704 is rotated, and through the meshing transmission of the gear ring 702 on the mounting ring 701 and multiple sets of first gears 705, all positioning plates 703 are driven to rotate synchronously and engage in the positioning grooves 706 of the filter element 6, thereby achieving rapid centering and positioning.

[0027] In this embodiment, reference Figure 4As shown, two sets of pawls 802 are respectively engaged with corresponding ratchet wheels 801, and both sets of pawls 802 are rotatably connected to the mounting can 1 via rotating rods 803. A first torsion spring 804 is sleeved on the rotating rod 803, and the two ends of the first torsion spring 804 are respectively fixedly connected to the pawls 802 and the mounting can 1. A second gear 805 is sleeved on each of the two sets of rotating rods 803. Two sets of racks 806 corresponding to the second gears 805 are slidably installed inside the mounting can 1, and the two sets of racks 806 are respectively engaged with the corresponding second gears 805. A pull bracket 807 is slidably installed inside the mounting can 1, and the pull bracket 807 is fixedly connected to the two sets of racks 806. A sliding rod 808 corresponding to the pull bracket 807 is fixedly installed inside the mounting can 1, and the pull bracket 807 and the sliding rod 808 are slidably sleeved. Two sets of... Two sets of springs 809 are distributed, and their ends are fixedly connected to the pull frame 807 and the mounting can 1, respectively. A positioning block 810 is fixedly installed on the pull frame 807. A positioning rod 811 corresponding to the positioning block 810 is fixedly installed inside the mounting can 1. Two sets of symmetrically distributed positioning frames 812 are sleeved on the positioning rod 811, and the two sets of positioning frames 812 are movably engaged with the positioning block 810, respectively. Two sets of symmetrically distributed second torsion springs 813 are sleeved on the positioning rod 811, and their ends are fixedly connected to the corresponding positioning frame 812 and the positioning rod 811, respectively. After the filter element 6 is installed, the two sets of pawls 802 automatically engage with the tooth grooves of the corresponding ratchet 801 under the action of the first torsion spring 804, locking the mounting shaft 704, preventing the positioning plate 703 from retracting, and ensuring that the filter element 6 is firmly fixed. When the filter element 6 needs to be replaced, pull the pull bracket 807 outward, which drives the two sets of racks 806 to move linearly. Through the transmission of the second gear 805, the pawl 802 rotates around the rotating rod 803 and disengages from the ratchet 801, releasing the lock on the mounting shaft 704. At the same time, when the pull bracket 807 moves to the limit position, the positioning block 810 on it is engaged between the two sets of positioning frames 812 under the action of the second torsion spring 813, temporarily fixing the pull bracket 807 in the unlocked state. At this time, the mounting shaft 704 can be rotated in the opposite direction to make the positioning plate 703 exit the positioning groove 706 of the filter element 6, completing the removal of the filter element 6. After replacing the new filter element 6, gently push the pull bracket 807 to make the positioning block 810 disengage from the positioning frame 812. Under the action of the spring 809 and the first torsion spring 804, it automatically resets. The rack 806 moves in the opposite direction to drive the pawl 802 to re-engage the ratchet 801, restoring the locking function. The whole operation process can be completed without tools and with one hand, achieving quick replacement of the filter element 6 while ensuring the sealing.

[0028] In this embodiment, when installing the filter element 6, the filter element 6 is pushed into the installation tank 1, and the positioning grooves 706 at both ends are aligned with the positioning plates 703 on the installation ring 701. At this time, the installation shaft 704 is rotated, and through the meshing transmission between the toothed ring 702 on the installation ring 701 and multiple sets of first gears 705, all positioning plates 703 are driven to rotate synchronously and be inserted into the positioning grooves 706 of the filter element 6, so as to achieve rapid centering and positioning. After the filter element 6 is installed, the two sets of pawls 802 automatically engage with the tooth grooves of the corresponding ratchet 801 under the action of the first torsion spring 804, locking the installation shaft 704, preventing the positioning plates 703 from retracting, and ensuring that the filter element 6 is firmly fixed. When the filter element 6 needs to be replaced, pull the pull bracket 807 outward, which drives the two sets of racks 806 to move linearly. Through the transmission of the second gear 805, the pawl 802 rotates around the rotating rod 803 and disengages from the ratchet 801, releasing the lock on the mounting shaft 704. At the same time, when the pull bracket 807 moves to the limit position, the positioning block 810 on it is engaged between the two sets of positioning frames 812 under the action of the second torsion spring 813, temporarily fixing the pull bracket 807 in the unlocked state. At this time, the mounting shaft 704 can be rotated in the opposite direction to make the positioning plate 703 exit the positioning groove 706 of the filter element 6, completing the removal of the filter element 6. After replacing the new filter element 6, gently push the pull bracket 807 to make the positioning block 810 disengage from the positioning frame 812. Under the action of the spring 809 and the first torsion spring 804, it automatically resets. The rack 806 moves in the opposite direction to drive the pawl 802 to re-engage the ratchet 801, restoring the locking function. The whole operation process can be completed without tools and with one hand, achieving quick replacement of the filter element 6 while ensuring the sealing.

[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0030] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water treatment nanofiltration apparatus comprising a mounting tank (1) and a filter cartridge (6), characterized in that: The installation tank (1) has two sets of symmetrically distributed end caps (2) installed at both ends. The installation tank (1) has a water inlet (3) and a drain outlet (5) fixedly installed on it. The installation tank (1) has a clean water outlet (4) fixedly installed in the middle. The water inlet (3) and the drain outlet (5) are symmetrically distributed at both ends of the filter element (6). The installation tank (1) is equipped with a quick positioning mechanism (7) for installing the filter element (6). The quick positioning mechanism (7) includes two sets of symmetrically distributed mounting rings (701) rotatably mounted in the mounting tank (1) and two sets of positioning grooves (706) symmetrically distributed on the filter element (6). A toothed ring (702) is sleeved on the mounting ring (701). Multiple sets of annularly distributed positioning plates (703) are provided around the mounting ring (701). Multiple sets of positioning plates (703) are rotatably connected to the mounting tank (1) through mounting shafts (704). Multiple sets of mounting shafts (704) are sleeved with first gears (705). Multiple sets of first gears (705) are meshed with toothed rings (702). The mounting tube is provided with a locking mechanism (8) for locking the mounting shafts (704). The locking mechanism (8) includes two sets of ratchet wheels (801) symmetrically sleeved on a set of mounting shafts (704) and pawls (802) corresponding to the two sets of ratchet wheels (801).

2. The water treatment nanofiltration device according to claim 1, characterized in that: The two sets of positioning grooves (706) are distributed correspondingly to the mounting ring (701), and multiple sets of positioning plates (703) are movably engaged with the filter element (6) through the corresponding positioning grooves (706).

3. The water treatment nanofiltration device according to claim 1, wherein: The two sets of pawls (802) are respectively engaged with the corresponding ratchet (801), and the two sets of pawls (802) are rotatably connected to the mounting can (1) through the rotating rod (803). A first torsion spring (804) is sleeved on the rotating rod (803), and the two ends of the first torsion spring (804) are respectively fixedly connected to the pawl (802) and the mounting can (1). A second gear (805) is sleeved on the two sets of rotating rods (803). Two sets of racks (806) corresponding to the second gears (805) are slidably installed in the mounting can (1). The two sets of racks (806) are respectively engaged with the corresponding second gears (805).

4. The water treatment nanofiltration device according to claim 1, wherein: A puller (807) is slidably installed inside the installation tank (1), and the puller (807) is fixedly connected to two sets of racks (806) respectively. A slide rod (808) corresponding to the puller (807) is fixedly installed inside the installation tank (1), and the puller (807) and the slide rod (808) are slidably sleeved.

5. The water treatment nanofiltration device according to claim 4, characterized in that: Two sets of symmetrically distributed springs (809) are sleeved on the slide rod (808), and the two ends of the two sets of springs (809) are fixedly connected to the pull frame (807) and the mounting tank (1) respectively. A positioning block (810) is fixedly installed on the pull frame (807).

6. A nanofiltration device for water treatment according to claim 1, characterized in that: The installation tank (1) is fixedly installed with a positioning rod (811) corresponding to the positioning block (810), and two sets of symmetrically distributed positioning frames (812) are sleeved on the positioning rod (811), and the two sets of positioning frames (812) are respectively engaged with the positioning block (810).

7. A nanofiltration device for water treatment according to claim 6, characterized in that: Two sets of symmetrically distributed second torsion springs (813) are sleeved on the positioning rod (811). The two ends of the second torsion springs (813) are fixedly connected to the corresponding positioning frame (812) and the positioning rod (811), respectively.

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