Pretreatment device for security filter

Abstract

The utility model discloses a pretreatment device for a security filter, which belongs to the technical field of water treatment and comprises a shell. The filter plate, the control valve and the pollution discharge assembly are arranged on the water inlet pipe, the filter plate can preliminarily filter water entering the security filter body and preliminarily screen large impurities so as to reduce the cleaning frequency, and when the filter plate is used for a long time and has the risk of blockage, the filter plate can be prevented from being blocked. A user can rotate the adjusting rod to turn over the adjusting rod by 180 degrees and close the control valve, the filter plate is subjected to back-flushing cleaning, waste water generated by back-flushing cleaning can be discharged to the outside through the pollution discharge assembly, and after cleaning is completed, the user can open the control valve so that the waste water can continue to enter the shell to be filtered. The security filter device has the advantage that sewage entering the security filter device can be filtered in advance in the solid-liquid separation process so as to reduce frequent replacement of a security filter membrane.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, specifically a pretreatment device for a security filter. Background Technology

[0002] Solid-liquid separation is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. It is also increasingly entering the daily lives of ordinary people. With the advancement of technology, solid-liquid separation adopts membrane filtration technology, which has good treatment effect and low cost.

[0003] Some traditional filtration equipment can clean the filter element regularly, but wastewater contains a lot of impurities. If the impurities are not pretreated, the solid-liquid separation effect cannot be guaranteed even if the filter element can be cleaned regularly, and the cleaning frequency needs to be increased. Therefore, we need to propose a pretreatment device for security filters. Utility Model Content

[0004] The purpose of this invention is to provide a pretreatment device for a security filter, which has the advantage of pre-filtering incoming sewage during solid-liquid separation to reduce the frequency of filter element cleaning, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a pretreatment device for a security filter, including a housing, wherein a filter element is detachably installed in the inner cavity of the housing;

[0006] One end of the outer shell is fixedly connected to a security filter body, and one side of the security filter body is connected to a water inlet pipe. A positioning ring is provided in the inner cavity of the water inlet pipe.

[0007] A filter plate is fixedly installed in the inner cavity of the positioning ring, the back of the positioning ring is rotatably installed in the inner cavity of the water inlet pipe through a rotating assembly, and an adjusting rod is fixedly installed in the front of the positioning ring.

[0008] The end of the adjusting rod away from the positioning ring passes through the water inlet pipe and extends to the outside of the water inlet pipe. The surface of the adjusting rod is equipped with a positioning component for positioning the use angle of the filter plate. A control valve is installed on the water inlet pipe. A sewage discharge component is provided at the bottom of the water inlet pipe and between the filter plate and the control valve. An end plate is provided at one end of the housing. The end plate is connected and fixed to one end of the housing through a connecting component.

[0009] In some embodiments, the rotating assembly includes a rotating shaft fixedly mounted on the back of the positioning ring, and a rotating hole is provided on the inner wall of the water inlet pipe at a corresponding position on the rotating shaft, with one end of the rotating shaft rotatably connected to the inner cavity of the rotating hole.

[0010] In some embodiments, the positioning assembly includes a fixed tube fixedly installed on the surface of the water inlet pipe, the surface of the adjusting rod being rotatably connected to the inner wall of the fixed tube, a positioning tube fixedly installed on one side of the fixed tube, a positioning rod threadedly connected to one end of the positioning tube, and one end of the positioning rod passing through the positioning tube and the fixed tube in sequence and extending to the inner cavity of the fixed tube to fit against the surface of the adjusting rod.

[0011] In some embodiments, the sewage discharge assembly includes a sewage discharge pipe connected to the bottom of the water inlet pipe, and a valve is installed on one side of the sewage discharge pipe.

[0012] In some embodiments, the connecting assembly includes a first connecting flange fixedly mounted on one end of the housing, and a second connecting flange fixedly mounted on the surface of the end plate. The first connecting flange and the second connecting flange are locked together by a locking assembly.

[0013] In some embodiments, the locking assembly includes a locking rod disposed on one side of the first connecting flange, one end of the locking rod passing through the first connecting flange and the second connecting flange in sequence and extending to the outside of the second connecting flange, and a locking nut being threadedly connected to one end of the locking rod, one side of the locking nut being in contact with the surface of the second connecting flange.

[0014] In some embodiments, a drain pipe is connected to one side of the end plate and at a position symmetrical to the inlet pipe, and a concentrated water pipe is connected to one side of the end plate and below the drain pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention features a filter plate, control valve, and drain assembly installed on the inlet pipe. The filter plate performs preliminary filtration of the water entering the security filter body, screening out larger impurities to reduce the frequency of filter element cleaning. When the filter plate is at risk of clogging after prolonged use, the user can rotate the adjusting rod to rotate it 180 degrees and close the control valve to backwash the filter plate. The wastewater generated during backwashing can be discharged to the outside through the drain assembly. After cleaning, the user can open the control valve to allow the wastewater to continue entering the outer shell for reverse osmosis treatment. This device has the advantage of pre-filtering the wastewater entering the reverse osmosis device during solid-liquid separation, thereby reducing the frequency of filter element cleaning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the end plate of this utility model;

[0019] Figure 3This is a schematic diagram of the structure of the connecting component of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the water inlet pipe of this utility model;

[0021] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0022] In the picture:

[0023] 1. Outer shell;

[0024] 2. Filter element;

[0025] 3. Water inlet pipe;

[0026] 4. Positioning ring;

[0027] 5. Filter plate;

[0028] 6. Adjusting rod;

[0029] 7. Control valve;

[0030] 8. End plate;

[0031] 9. Shaft;

[0032] 10. Drilling;

[0033] 11. Fixed pipe;

[0034] 12. Positioning tube;

[0035] 13. Positioning rod;

[0036] 14. Sewage pipe;

[0037] 15. Valves;

[0038] 16. First connecting flange;

[0039] 17. Second connecting flange;

[0040] 18. Locking rod;

[0041] 19. Tighten the nut;

[0042] 20. Drainage pipe;

[0043] 21. Concentrated water pipe;

[0044] 22. Security filter body. Detailed Implementation

[0045] 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.

[0046] Please see Figures 1-5 This utility model provides a pretreatment device for a security filter, including a housing 1, and a filter element 2 is detachably installed in the inner cavity of the housing 1;

[0047] One end of the outer casing 1 is fixedly connected to a security filter body 22. A water inlet pipe 3 is connected to one side of the security filter body. An end plate 8 is provided at the other end of the outer casing 1. A drain pipe 20 is connected to one side of the end plate 8 and at a position symmetrical to the water inlet pipe 3. A concentrated water pipe 21 is connected to one side of the end plate 8 and below the drain pipe 20.

[0048] With the setup of this device, when in use, the user can pass the sewage to be treated into the security filter body 22 through the inlet pipe 3. After filtration, it is then passed into the outer shell 1 and filtered by the filter element 2. The treated water can be discharged to the outside through the drain pipe 20, while the concentrated water produced by filtration can be discharged to the outside through the concentrated water pipe 21.

[0049] Preferably, the end plate 8 is connected and fixed to one end of the housing 1 via a connecting assembly. The connecting assembly includes a first connecting flange 16 fixedly installed at one end of the housing 1, and a second connecting flange 17 fixedly installed on the surface of the end plate 8. The first connecting flange 16 and the second connecting flange 17 are locked together by a locking assembly. The locking assembly includes a locking rod 18 located on one side of the first connecting flange 16. One end of the locking rod 18 passes through the first connecting flange 16 and the second connecting flange 17 sequentially and extends to the outside of the second connecting flange 17. A locking nut 19 is threaded onto one end of the locking rod 18, and one side of the locking nut 19 is in contact with the surface of the second connecting flange 17. With the connecting assembly, the end plate 8 can be detachably installed at one end of the housing 1. When the filter element 2 needs to be replaced or cleaned after long-term use, the user can open the end cover and remove the filter element 2 from the housing 1.

[0050] The water inlet pipe 3 has a positioning ring 4 inside, a filter plate 5 is fixedly installed inside the positioning ring 4, an adjusting rod 6 is fixedly installed on the front of the positioning ring 4, the end of the adjusting rod 6 away from the positioning ring 4 passes through the water inlet pipe 3 and extends to the outside of the water inlet pipe 3, a control valve 7 is installed on the water inlet pipe 3, and a sewage discharge assembly is set at the bottom of the water inlet pipe 3 and between the filter plate 5 and the control valve 7. The sewage discharge assembly includes a sewage discharge pipe 14 connected to the bottom of the water inlet pipe 3, and a valve 15 is installed on one side of the sewage discharge pipe 14.

[0051] By installing a filter plate 5, a control valve 7, and a drain assembly on the inlet pipe 3, the filter plate 5 can perform preliminary filtration on the water entering the housing 1 for reverse osmosis filtration, screening out larger impurities to reduce the frequency of filter element 2 cleaning. When the filter plate 5 is at risk of clogging after prolonged use, the user can rotate the adjusting rod 6 to flip it 180 degrees and close the control valve 7 to backwash the filter plate 5. The wastewater generated by backwashing can be discharged to the outside through the drain pipe 14 by opening the valve 15.

[0052] It is worth noting that the surface of the adjusting rod 6 is equipped with a positioning component for positioning the use angle of the filter plate 5. The positioning component includes a fixing tube 11 fixedly installed on the surface of the water inlet pipe 3. The surface of the adjusting rod 6 is rotatably connected to the inner wall of the fixing tube 11. A positioning tube 12 is fixedly installed on one side of the fixing tube 11. A positioning rod 13 is threadedly connected to one end of the positioning tube 12. One end of the positioning rod 13 passes through the positioning tube 12 and the fixing tube 11 in sequence and extends into the inner cavity of the fixing tube 11 to fit against the surface of the adjusting rod 6. With the setting of the positioning component, after the filter plate 5 is flipped, the user can tighten the positioning rod 13 to lock the adjusting rod 6, thereby locking and fixing the use angle of the filter plate 5.

[0053] Furthermore, the back of the positioning ring 4 is rotatably mounted in the inner cavity of the water inlet pipe 3 via a rotating assembly. The rotating assembly includes a rotating shaft 9 fixedly mounted on the back of the positioning ring 4, and a rotating hole 10 is provided on the inner wall of the water inlet pipe 3 at the corresponding position of the rotating shaft 9. One end of the rotating shaft 9 is rotatably connected to the inner cavity of the rotating hole 10.

[0054] By setting the rotating component, the positioning ring 4 can be rotatably installed in the inner cavity of the water inlet pipe 3 to improve its rotational stability. When the positioning ring 4 rotates, it will drive the rotating shaft 9 to rotate in the inner cavity of the rotating hole 10.

[0055] 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 pre-treatment device for security filter, comprising a shell (1), the inner cavity of the shell (1) is detachably installed with a filter core (2); characterized in that: One end of the shell (1) is fixedly connected with a security filter body (22), one side of the security filter body (22) is communicated with a water inlet pipe (3), the inner cavity of the water inlet pipe (3) is provided with a positioning ring (4); The inner cavity of the positioning ring (4) is fixedly installed with a filter plate (5), the back of the positioning ring (4) is rotatably installed in the inner cavity of the water inlet pipe (3) through a rotating assembly, the front of the positioning ring (4) is fixedly installed with an adjusting rod (6); One end of the adjusting rod (6) away from the positioning ring (4) penetrates through the water inlet pipe (3) and extends to the outside of the water inlet pipe (3), the surface of the adjusting rod (6) is installed with a positioning assembly for positioning the use angle of the filter plate (5), a control valve (7) is installed on the water inlet pipe (3) in a matched manner, a sewage assembly is arranged at the bottom of the water inlet pipe (3) and between the filter plate (5) and the control valve (7), one end of the shell (1) is provided with an end plate (8), the end plate (8) is connected and fixed to one end of the shell (1) through a connecting assembly.

2. The pre-treatment device for security filter according to claim 1, characterized in that: The rotating assembly comprises a rotating shaft (9) fixedly installed on the back of the positioning ring (4), a rotating hole (10) is formed in the inner wall of the water inlet pipe (3) and corresponds to the rotating shaft (9), and one end of the rotating shaft (9) is rotatably connected with the inner cavity of the rotating hole (10).

3. The pre-treatment device for security filter according to claim 1, characterized in that: The positioning assembly comprises a fixed pipe (11) fixedly installed on the surface of the water inlet pipe (3), the surface of the adjusting rod (6) is rotatably connected with the inner wall of the fixed pipe (11), one side of the fixed pipe (11) is fixedly installed with a positioning pipe (12), one end of the positioning pipe (12) is threadedly connected with a positioning rod (13), and one end of the positioning rod (13) penetrates through the positioning pipe (12) and the fixed pipe (11) in sequence and extends to the inner cavity of the fixed pipe (11) and is attached to the surface of the adjusting rod (6).

4. The pre-treatment device for security filter according to claim 1, characterized in that: The sewage assembly comprises a sewage pipe (14) communicated with the bottom of the water inlet pipe (3), and a valve (15) is installed on one side of the sewage pipe (14) in a matched manner.

5. The pre-treatment device for security filter according to claim 1, characterized in that: The connecting assembly comprises a first connecting flange (16) fixedly installed on one end of the shell (1), the surface of the end plate (8) is fixedly installed with a second connecting flange (17), and the first connecting flange (16) and the second connecting flange (17) are locked and fixed together through a locking assembly.

6. The pre-treatment device for security filter according to claim 5, characterized in that: The locking assembly comprises a locking rod (18) arranged on one side of the first connecting flange (16), one end of the locking rod (18) penetrates the first connecting flange (16) and the second connecting flange (17) in sequence and extends to the outside of the second connecting flange (17), and one end of the locking rod (18) is threadedly connected with a locking nut (19), one side of the locking nut (19) is attached to the surface of the second connecting flange (17).

7. A pre-treatment device for security filters according to claim 1, characterized in that: One side of the end plate (8) and located at the symmetric position of the water inlet pipe (3) is communicated with a drain pipe (20), and one side of the end plate (8) and located below the drain pipe (20) is communicated with a concentrated water pipe (21).

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