Novel security filter

Abstract

The utility model belongs to the technical field of filtration, and particularly relates to a novel security filter which comprises a filter body and supporting legs, the supporting legs are fixedly connected to the lower end of the filter body at equal intervals, a top cover is connected to the upper end of the filter body, and a liquid inlet pipe is fixedly connected to the upper portion of the left end of the filter body. A liquid outlet pipe is fixedly connected below the right end of the filter body, and filtering mechanisms are arranged at the inner end and the outer end of the filter body and comprise bottom plates fixedly connected to the lower end of the inner side of the filter body. According to the novel security filter, when the filter main body carries out filtering work, the electromagnetic valves in the cleaning pipe and the blow-off pipe are closed, the electromagnetic valves in the liquid inlet pipe and the liquid outlet pipe are opened, and liquid to be filtered is injected into the filter main body from the liquid inlet pipe; and the liquid is filtered by the filter element, flows downwards from the interior of the filter element, flows into the bottom end in the filter main body through the water outlet hole, is discharged from the liquid outlet pipe below the right end of the filter main body and is collected.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, specifically a novel security filter. Background Technology

[0002] Security filters are typically located before the reverse osmosis membrane. They contain eight high-flow-rate pleated external pressure filter cartridges, with a strong support frame inside each cartridge. The middle layer uses multi-layer composite progressive filter material, with a glass fiber membrane with a filtration accuracy of 5μm playing the main filtration role. The outer polypropylene flow guide layer has a larger pore size, and the outer part is a mesh bag that helps to solidify the pleated filter membrane.

[0003] Traditional reverse osmosis security filters are prone to bacterial growth, accelerating membrane fouling and causing short circuits between the inlet and outlet water. The contaminants that clog the filter cartridges are mainly complex compounds formed by organic matter, hydrocarbons, various inorganic substances, dead microorganisms, and flocculants in the influent. These can be removed by a combination of alkaline and acid washing. Filter cartridges whose performance is effectively restored can be reused. However, current security filters are all cleaned offline, resulting in high labor intensity for on-site personnel and poor cleaning effectiveness.

[0004] Therefore, we urgently need a new type of security filter that does not require offline cleaning after disassembling the filter element. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of security filter to solve the problems mentioned in the background art, which are that current security filters all adopt an offline cleaning mode, resulting in high labor intensity for on-site employees and poor cleaning effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel security filter, comprising a filter body and supporting legs, wherein the supporting legs are fixedly connected at equal intervals to the lower end of the filter body, a top cover is connected to the upper end of the filter body, an inlet pipe is fixedly connected to the upper left end of the filter body, an outlet pipe is fixedly connected to the lower right end of the filter body, and filtration mechanisms are provided at both the inner and outer ends of the filter body.

[0007] The filtration mechanism includes a base plate fixedly connected to the lower inner side of the filter body, a filter element connected to the upper end of the base plate, a mounting plate fixedly connected to the upper inner side of the filter body, a circular plate connected inside the mounting plate, a limit ring fixedly connected to the lower side of the circular plate, a handle fixedly connected to the upper side of the circular plate, a cleaning pipe fixedly connected to the upper end of the liquid outlet pipe, a drain pipe fixedly connected to the lower end of the liquid inlet pipe, and an opening and closing unit connected to the upper front end of the filter body and the front end of the top cover.

[0008] A further improvement is that the opening and closing unit includes a connecting plate fixedly connected to the outer front end of the top cover, a U-shaped frame fixedly connected to the upper part of the outer front end of the filter body, a threaded rod connected to the upper part of the inside of the U-shaped frame, and a rotating handle fixedly connected to the right end of the threaded rod.

[0009] A further improvement is that the mounting plate has mounting holes spaced at equal intervals inside, and the inner side of the mounting holes has internal threads. The outer side of the circular plate has external threads, and the outer side of the circular plate is threaded to the inner side of the mounting holes. Thus, by rotating the circular plate inside the mounting holes, it can be disassembled and installed inside the mounting holes.

[0010] A further improvement is that the upper side of the base plate has grooves at equal intervals, and the inside of the base plate has a water outlet hole located in the middle of the grooves. The outer side of the limiting ring is slidably connected to the inner side of the mounting hole, and the inner side of the limiting ring is slidably connected to the outer side of the upper end of the filter element. The lower side of the circular plate abuts against the upper end of the mounting plate, and the outer side of the lower end of the filter element is slidably connected to the inner side of the groove. Thus, after the filter element is passed through the mounting hole and placed in the groove on the base plate, the circular plate is then threaded into the mounting hole inside the mounting plate. At the same time, the limiting ring will slide to the outer side of the upper end of the filter element until the lower side of the circular plate contacts the upper side of the filter element, thereby fixing the filter element between the mounting plate and the base plate inside the filter body.

[0011] A further improvement is that solenoid valves are installed inside the inlet pipe at the left end of the drain pipe, inside the outlet pipe at the right end of the cleaning pipe, and inside both the cleaning pipe and the drain pipe. Thus, during normal filtration, by closing the solenoid valves in the cleaning pipe and the drain pipe and opening the solenoid valves in the inlet pipe and the outlet pipe, the liquid to be filtered can enter the filter body from the inlet pipe, be filtered by the filter element, flow into the bottom of the filter body, and then be discharged through the outlet pipe.

[0012] A further improvement is that threaded holes are provided at the upper left and right ends of the U-shaped frame, and the outer side of the threaded rod is threaded to the inner side of the threaded hole. Thus, when the threaded rod is rotated in the threaded hole by rotating the handle, the threaded rod can move relative to the U-shaped frame.

[0013] A further improvement is that an insertion hole is provided at the lower middle position of the connecting plate, the outer side of the threaded rod is inserted into the inner side of the insertion hole, the outer side of the lower end of the connecting plate is slidably connected to the inner side of the U-shaped frame, the outer rear end of the top cover is hinged to the upper outer rear end of the filter body via a hinge, and the upper side of the filter body abuts against the lower side of the top cover, thereby threading the threaded rod into the threaded hole inside the U-shaped frame and passing through the insertion hole at the lower end of the connecting plate, so that the connecting plate and the U-shaped frame are relatively fixed.

[0014] A further improvement is that a rubber pad is fixedly connected to the lower side of the top cover, so that the contact between the filter body and the top cover can be kept sealed by the rubber pad on the lower side of the top cover contacting the upper side of the filter body.

[0015] In summary, this application discloses a novel security filter.

[0016] This technical solution, when the filter element needs cleaning, closes the solenoid valves inside the inlet and outlet pipes, and opens the solenoid valves in the cleaning and drain pipes. The cleaning solution flows from the cleaning pipe into the outlet pipe and then into the bottom of the filter body. It then enters the filter element through the water outlet in the bottom plate, flows through the filter element to the upper part of the bottom plate inside the filter body, and finally enters the inlet pipe and is discharged through the drain pipe. Thus, by the cleaning solution flowing from the inside of the filter element to the outside, flocculent matter and other impurities in the filter element are flushed out, while the filter element is sterilized and disinfected, thus cleaning the filter element. Moreover, this cleaning process does not require removing the filter element from the filter body for offline cleaning, thereby reducing the labor intensity of employees.

[0017] Furthermore, by opening the top cover at the top of the filter body and rotating the handle on the upper side of the circular plate, the circular plate rotates and moves upward until it is removed from the mounting hole. After that, the circular plate and the limiting ring will no longer restrict the upper end of the filter element. Then, the filter element can be removed from the bottom plate through the mounting hole, so that it can be quickly replaced when the filter element is damaged. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the filter body of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the base plate and mounting plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the filter element structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the opening and closing unit of this utility model.

[0023] In the diagram: 1. Filter body; 2. Support leg; 3. Top cover; 4. Inlet pipe; 5. Outlet pipe; 601. Base plate; 602. Filter element; 603. Mounting plate; 604. Circular plate; 605. Limiting ring; 606. Handle; 607. Cleaning pipe; 608. Drain pipe; 701. Connecting plate; 702. U-shaped frame; 703. Threaded rod; 704. Rotary handle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This utility model provides a technical solution: a novel security filter, including a filter body 1 and support legs 2. The support legs 2 are fixedly connected to the lower end of the filter body 1 at equal distances. A top cover 3 is connected to the upper end of the filter body 1. An inlet pipe 4 is fixedly connected to the upper left end of the filter body 1. An outlet pipe 5 is fixedly connected to the lower right end of the filter body 1. Filtering mechanisms are provided at both the inner and outer ends of the filter body 1.

[0026] The filtration mechanism includes a base plate 601 fixedly connected to the lower inner side of the filter body 1. A filter element 602 is connected to the upper end of the base plate 601. A mounting plate 603 is fixedly connected to the upper inner side of the filter body 1. A circular plate 604 is connected inside the mounting plate 603. Mounting holes are evenly spaced inside the mounting plate 603, and internal threads are provided on the inner side of the mounting holes. External threads are provided on the outer side of the circular plate 604. The outer side of the circular plate 604 is threadedly connected to the inner side of the mounting holes. Thus, by rotating the circular plate 604 inside the mounting holes, it can be disassembled and installed inside the mounting holes.

[0027] A limiting ring 605 is fixedly connected to the lower side of the circular plate 604, and a handle 606 is fixedly connected to the upper side of the circular plate 604. The upper side of the base plate 601 has grooves at equal intervals, and a water outlet is located in the middle of the grooves inside the base plate 601. The outer side of the limiting ring 605 is slidably connected to the inner side of the mounting hole, and the inner side of the limiting ring 605 is slidably connected to the outer side of the upper end of the filter element 602. The lower side of the circular plate 604 abuts against the upper end of the mounting plate 603. The filter element 602... The lower outer side of the filter element 602 is slidably connected to the inner side of the groove. After the filter element 602 is passed through the mounting hole and placed in the groove on the base plate 601, the circular plate 604 is threaded into the mounting hole inside the mounting plate 603. At the same time, the limiting ring 605 will slide to the upper outer side of the filter element 602 until the lower side of the circular plate 604 contacts the upper side of the filter element 602. Then the filter element 602 can be installed and fixed between the mounting plate 603 and the base plate 601 inside the filter body 1.

[0028] After opening the top cover 3, rotate the handle 606 on the upper side of the circular plate 604 so that the circular plate 604 rotates until it is removed from the mounting hole. After that, the circular plate 604 and the limiting ring 605 will no longer restrict the upper end of the filter element 602, and the filter element 602 can be removed from the bottom plate 601 through the mounting hole, so that the filter element 602 can be quickly replaced when it is damaged.

[0029] A cleaning pipe 607 is fixedly connected to the upper end of the outlet pipe 5, and a drain pipe 608 is fixedly connected to the lower end of the inlet pipe 4. Solenoid valves are installed inside the inlet pipe 4 at the left end of the drain pipe 608, inside the outlet pipe 5 at the right end of the cleaning pipe 607, and inside both the cleaning pipe 607 and the drain pipe 608. During normal filtration, by closing the solenoid valves in the cleaning pipe 607 and the drain pipe 608 and opening the solenoid valves in the inlet pipe 4 and the outlet pipe 5, the liquid to be filtered enters the filter body 1 from the inlet pipe 4, passes through the filter element 602, flows into the bottom of the filter body 1, and then exits through the outlet pipe 5. When cleaning the filter element 602 is required, the solenoid valves inside the inlet pipe 4 and the outlet pipe 5 are closed. The solenoid valves in the cleaning pipe 607 and the drain pipe 608 are opened, allowing the cleaning fluid to flow from the cleaning pipe 607 into the outlet pipe 5 and then into the bottom of the filter body 1. It then enters the filter element 602 through the outlet hole in the bottom plate 601, flows through the filter element 602 to the upper part of the bottom plate 601 inside the filter body 1, and finally enters the inlet pipe 4 before being discharged through the drain pipe 608. Thus, by the cleaning fluid flowing from the inside of the filter element 602 to the outside, flocculants and other impurities in the filter element 602 are flushed out, while simultaneously sterilizing and disinfecting the filter element 602. This cleaning process does not require removing the filter element 602 from the filter body 1 for offline cleaning, thereby reducing the labor intensity of employees.

[0030] An opening and closing unit is connected to the upper front end of the filter body 1 and the front end of the top cover 3. The opening and closing unit includes a connecting plate 701 fixedly connected to the outer front end of the top cover 3. A U-shaped frame 702 is fixedly connected to the upper front end of the outer side of the filter body 1. A threaded rod 703 is connected to the upper inside of the U-shaped frame 702. A rotating handle 704 is fixedly connected to the right end of the threaded rod 703. Threaded holes are opened at both ends of the upper inside of the U-shaped frame 702. The outer side of the threaded rod 703 is threadedly connected to the inner side of the threaded hole. Thus, when the rotating handle 704 is rotated so that the threaded rod 703 is rotated in the threaded hole, the threaded rod 703 can move relative to the U-shaped frame 702.

[0031] A socket is provided at the middle of the lower end of the connecting plate 701. The outer side of the threaded rod 703 is inserted into the inner side of the socket. The outer side of the lower end of the connecting plate 701 is slidably connected to the inner side of the U-shaped frame 702. The outer rear end of the top cover 3 is hinged to the upper outer rear end of the filter body 1 via a hinge. The upper side of the filter body 1 abuts against the lower side of the top cover 3. Thus, when the top cover 3 is rotated to the upper side of the filter body 1, and the lower end of the connecting plate 701 at the front end of the top cover 3 slides to the inner side of the U-shaped frame 702, the threaded rod 703 is then threaded into the threaded hole inside the U-shaped frame 702 and passes through the socket at the lower end of the connecting plate 701. This fixes the connecting plate 701 and the U-shaped frame 702 relative to each other, thereby fixing the top cover 3 to the upper end of the filter body 1 and closing the upper end of the filter body 1.

[0032] A rubber pad is fixedly connected to the lower side of the top cover 3. After the top cover 3 is fixed to the upper side of the filter body 1, the rubber pad on the lower side of the top cover 3 contacts the upper side of the filter body 1, which can keep the contact between the filter body 1 and the top cover 3 sealed and prevent external dust from entering the filter body 1 from between the filter body 1 and the top cover 3 and affecting the filtration operation.

[0033] Working principle: When the filter body 1 is performing filtration, the solenoid valves in the cleaning pipe 607 and the drain pipe 608 are closed, and the solenoid valves in the inlet pipe 4 and the outlet pipe 5 are opened. The liquid to be filtered is injected into the filter body 1 through the inlet pipe 4. Then, the liquid is filtered by the filter element 602 and flows downward from the inside of the filter element 602. It then flows into the bottom of the filter body 1 through the water outlet hole and is discharged from the outlet pipe 5 at the lower right end of the filter body 1 and collected.

[0034] When it is necessary to clean the filter element 602 in the filter body 1, close the solenoid valves inside the inlet pipe 4 and outlet pipe 5, and open the solenoid valves in the cleaning pipe 607 and drain pipe 608. The cleaning solution is injected from the cleaning pipe 607 into the outlet pipe 5 and then into the bottom of the filter body 1. It then enters the filter element 602 through the water outlet hole in the bottom plate 601, flows through the filter element 602 to the part above the bottom plate 601 inside the filter body 1, and finally enters the inlet pipe 4 and is discharged through the drain pipe 608. At this time, the flocculent and other impurities in the filter element 602 are flushed out, and the filter element 602 can be sterilized and disinfected at the same time, thus completing the cleaning of the filter element 602.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A new security filter comprising a filter body (1) and support legs (2) fixedly connected at equal distances to the lower end of the filter body (1), characterized in that: The upper end of the filter body (1) is connected with a top cover (3), the upper left end of the filter body (1) is fixedly connected with a liquid inlet pipe (4), the lower right end of the filter body (1) is fixedly connected with a liquid outlet pipe (5), and the inner and outer ends of the filter body (1) are provided with a filtering mechanism. The filtering mechanism comprises a bottom plate (601) fixedly connected to the inner lower end of the filter body (1), the upper end of the bottom plate (601) is connected with a filter core (602), the inner upper end of the filter body (1) is fixedly connected with a mounting plate (603), the inside of the mounting plate (603) is connected with a circular plate (604), the lower side of the circular plate (604) is fixedly connected with a limiting ring (605), the upper side of the circular plate (604) is fixedly connected with a handle (606), the upper end of the liquid outlet pipe (5) is fixedly connected with a cleaning pipe (607), the lower end of the liquid inlet pipe (4) is fixedly connected with a blowdown pipe (608), and the front end of the filter body (1) is connected with an opening and closing unit above the front end of the top cover (3).

2. A new security filter according to claim 1, characterized by: The opening and closing unit comprises a connecting plate (701) fixedly connected to the outer front end of the top cover (3), the upper side of the outer front end of the filter body (1) is fixedly connected with a U-shaped frame (702), the inside of the U-shaped frame (702) is connected with a threaded rod (703), and the right end of the threaded rod (703) is fixedly connected with a rotating handle (704).

3. A new security filter as claimed in claim 1, wherein: The inside of the mounting plate (603) is provided with mounting holes at equal distances, and the inside of the mounting holes is provided with internal threads, the outside of the circular plate (604) is provided with external threads, and the outside of the circular plate (604) is threadedly connected with the inside of the mounting holes.

4. A new security filter as claimed in claim 1, wherein: The upper side of the bottom plate (601) is provided with grooves at equal distances, a water outlet hole is formed in the bottom plate (601) at a position between the grooves, the outside of the limiting ring (605) is slidably connected with the inside of the mounting holes, the inside of the limiting ring (605) is slidably connected with the outside of the upper end of the filter core (602), the lower side of the circular plate (604) abuts against the upper end of the mounting plate (603), and the outside of the lower end of the filter core (602) is slidably connected with the inside of the grooves.

5. A new security filter as claimed in claim 1, wherein: Electromagnetic valves are installed in the inside of the liquid inlet pipe (4) at a position left to the blowdown pipe (608), the inside of the liquid outlet pipe (5) at a position right to the cleaning pipe (607), and the inside of the cleaning pipe (607) and the blowdown pipe (608).

6. A new security filter according to claim 2, characterized by: Threaded holes are formed in the inside of the U-shaped frame (702) at the left and right ends of the upper side, and the outside of the threaded rod (703) is threadedly connected with the inside of the threaded holes.

7. A new security filter as claimed in claim 2, wherein: A thimble is formed in the lower end of the connecting plate (701) at a middle position, the outside of the threaded rod (703) is inserted into the inside of the thimble, the lower end of the connecting plate (701) is slidably connected with the inside of the U-shaped frame (702), the outside of the rear end of the top cover (3) is hingedly connected with the upper side of the rear end of the filter body (1), and the lower side of the top cover (3) abuts against the upper side of the filter body (1).

8. A new security filter as claimed in claim 1, wherein: The lower side of the top cover (3) is fixedly connected with a rubber pad.

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