Filter element with pretreatment structure

Abstract

The filter element with the pretreatment structure comprises a protective shell, a water inlet channel is arranged at the lower end of the protective shell and located on the outer side of a water inlet, a preliminary filtering base is arranged at the bottom of the water inlet channel, and a first filter screen plate and a second filter screen plate are sequentially arranged in the water inlet channel from bottom to top. Meanwhile, a cleaning assembly is arranged at the position, between the preliminary filtering base and the first filtering net plate, in the water inlet channel, a filter element body is arranged in the middle of the interior of the protective shell, and a sealing cover is arranged at the top of the protective shell. According to the filter element with the pretreatment structure, the preliminary filter base, the first filter screen plate, the second filter screen plate and the activated carbon particles are matched for use, liquid entering the filter element body is conveniently filtered, the filter element body is not prone to being blocked, meanwhile, the cleaning assembly is arranged, high-pressure flushing is conveniently conducted on the preliminary filter base, and the cleaning efficiency is improved. Therefore, attached microorganisms and floating objects are not easy to block the filter holes, and the use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to seawater filtration, in particular to a filter element with a pretreatment structure. Background Art

[0002] Offshore oil production is the most promising oil production method in the 21st century. Due to the short life and high risk of offshore oil production platforms, water injection development must be adopted in advance. Reinjection of produced water after treatment is an important way to ensure the sustainable development of oil fields and reduce environmental pollution. Therefore, the development and application of offshore oil production water treatment technology is crucial. With the continuous development of marginal oil fields and deep-water oil fields, due to the high corrosiveness of seawater, in order to achieve the initial filtration of seawater, special filter elements are required, such as stainless steel filter elements. Stainless steel filter elements can be plain woven with stainless steel wire to obtain square mesh, which can be rolled into cylindrical filter elements. Stainless steel wire has good corrosion resistance and long service life.

[0003] After searching, it is found that typical filter elements in the prior art are such as the one with publication number CN217163502U, a deformation-resistant filter element for seawater filtration, including a filter cartridge assembly, a support member and a cover ring, the cover rings are arranged at both ends of the filter cartridge assembly, and the outer end surface of one of the cover rings is concavely provided with an annular groove, a limiting ring is arranged in the annular groove, the filter cartridge assembly includes a protective mesh cylinder, a main filter screen cylinder and a support cylinder which are arranged concentrically in sequence, the support member is arranged in the inner cavity of the filter cartridge assembly, and a pull rod is arranged between the limiting ring and the support member. Through the above manner, the deformation-resistant filter element for seawater filtration described in the utility model is specially designed with a filter cartridge assembly, which protects the main filter screen cylinder inside and outside through the protective mesh cylinder and the support cylinder, improves the structural strength and impact resistance, and uses the support member to support the inner cavity of the filter cartridge assembly, improves the ability to resist external impact deformation, and the support member can be limited and withdrawn by the pull rod, with high structural stability and convenient maintenance.

[0004] In summary, the existing filter element is not provided with a pretreatment structure when in use, so that microorganisms in seawater are attached and floating objects block the water inlet hole, affecting the use effect. In view of the above problems, the existing equipment needs to be improved. Utility Model Content

[0005] The utility model aims to provide a filter element with a pretreatment structure to solve the problem in the background art that the existing filter element is not provided with a pretreatment structure when in use, so that microorganisms in seawater adhere and floating objects block the water inlet hole, affecting the use effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a filter element with a pretreatment structure, comprising a protective housing,

[0007] A plurality of water inlets are provided at the bottom of the lower end of the protective shell, and a water inlet channel is provided at the outer side of the water inlet at the lower end of the protective shell, a preliminary filter base is provided at the bottom of the water inlet channel, and a first filter screen plate and a second filter screen plate are provided in sequence from bottom to top inside the water inlet channel, and a cleaning assembly is provided inside the water inlet channel between the preliminary filter base and the first filter screen plate, a filter element body is provided in the middle of the protective shell, and the middle of the lower end of the filter element body is engaged with a plug-in column provided in the middle of the bottom end of the protective shell, and the outer side of the upper end of the filter element body is threadedly connected with the upper end of the protective shell through a positioning threaded seat, a sealing cover is provided on the top of the protective shell, and the bottom of the water outlet pipe provided in the middle of the sealing cover passes through the sealing cover and the positioning threaded seat and extends to the upper part of the filter element body.

[0008] Preferably, the water inlet is arranged in an annular structure, and a circular filter screen is arranged at the upper end inside each water inlet, and the circular filter screen is made of stainless steel, and the mesh size of the circular filter screen is smaller than that of the first filter screen plate and the second filter screen plate.

[0009] Preferably, activated carbon particles are filled between the protective shell and the filter element body, and a plurality of filter holes are equidistantly provided on the side of the filter element body, and multiple layers of filter cotton sheets are arranged inside the filter holes.

[0010] Preferably, a plurality of injection ports are symmetrically arranged on the outer side of the upper end of the positioning threaded seat, and the activated carbon particles are conveniently filled into the cavity between the outer side of the filter element body and the inner side of the protective shell through the injection ports.

[0011] Preferably, the cleaning assembly includes a waterproof cover, the middle of the upper end of the waterproof cover is connected to the outer side of the lower end of the protective shell, and the middle of the lower end of the waterproof cover is connected to the outer side of the lower end of the water inlet channel, and at the same time, a liquid inlet pipe is snap-connected to one side of the waterproof cover, the other end of the liquid inlet pipe is connected to one end of the liquid extraction and filtering assembly, and the other end of the liquid extraction and filtering assembly is connected to the high-pressure injection plate through a drain pipe penetrating the water inlet channel, and at the same time, the middle of the upper end of the high-pressure injection plate is connected to the inner wall of the water inlet channel through a fixed cross bar.

[0012] Preferably, the waterproof cover and the outer side of the protective shell are coated with an anti-corrosion coating, and the liquid extraction and filtration assembly includes a mounting shell, a filtration assembly and a liquid extraction assembly.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the filter element with the pretreatment structure,

[0014] (1) In order to solve the problem that the existing filter element does not have a pretreatment structure when in use, so that microorganisms in seawater adhere to and floating objects block the water inlet hole, affecting the use effect, the present application provides a preliminary filtering base, a first filter screen plate, a second filter screen plate and activated carbon particles for use, so as to facilitate filtering the liquid entering the filter element body, so that the filter element body is not easily blocked. At the same time, a cleaning component is provided to facilitate high-pressure flushing of the preliminary filtering base, so that the attached microorganisms and floating objects are not easy to block the filter hole, thereby improving the use effect;

[0015] (2) In order to solve the problem that it is inconvenient to replace the existing filter element when it is in use, the present application rotates the positioning threaded seat to separate the positioning threaded seat from the upper end of the protective shell, and then removes the filter element body from the protective shell, thereby replacing the filter element body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0019] Figure 4 This is a front view structural schematic diagram of the utility model.

[0020] In the figure: 1. Protective shell; 101. Water inlet; 102. Round filter screen; 103. Plug-in column; 2. Water inlet channel; 3. Preliminary filtration base; 4. First filter screen plate; 5. Second filter screen plate; 6. Filter element body; 7. Positioning threaded seat; 701. Filling port; 8. Activated carbon particles; 9. Sealing cover; 10. Water outlet pipe; 11. Waterproof cover; 12. Liquid extraction and filtration assembly; 13. Liquid inlet pipe; 14. Drain pipe; 15. High-pressure injection plate; 16. Fixed cross bar. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model provides a technical solution: a filter element with a pretreatment structure, according to Figure 1 , Figure 2 and Figure 4 As shown, a plurality of water inlets 101 are provided at the bottom of the lower end of the protective shell 1. The water inlets 101 are arranged in an annular structure, and a circular filter screen 102 is arranged at the upper end of each water inlet 101. At the same time, the circular filter screen 102 is made of stainless steel, and the mesh size of the circular filter screen 102 is smaller than the first filter screen plate 4 and the second filter screen plate 5. A water inlet channel 2 is provided at the lower end of the protective shell 1 outside the water inlet 101, a preliminary filter base 3 is provided at the bottom of the water inlet channel 2, and the first filter screen plate 4 and the second filter screen plate 5 are arranged in sequence from bottom to top inside the water inlet channel 2, and a cleaning component is provided inside the water inlet channel 2 between the preliminary filter base 3 and the first filter screen plate 4, and the cleaning component includes a waterproof cover 11, and the middle of the upper end of the waterproof cover 11 is connected to the waterproof cover 11. The outer side of the lower end of the protective shell 1 is connected, and the middle of the lower end of the waterproof cover 11 is connected to the outer side of the lower end of the water inlet channel 2. At the same time, a liquid inlet pipe 13 is snap-connected on one side of the waterproof cover 11, and the other end of the liquid inlet pipe 13 is connected to one end of a liquid extraction filter assembly 12, and the other end of the liquid extraction filter assembly 12 passes through the water inlet channel 2 through a drain pipe 14 and is connected to a high-pressure injection plate 15. The liquid extraction filter assembly 12 includes an installation shell, a filter assembly and a liquid extraction assembly. At the same time, the middle of the upper end of the high-pressure injection plate 15 is connected to the inner wall of the water inlet channel 2 through a fixed cross bar 16, which is convenient for flushing the preliminary filter base 3 to prevent the filter holes in the preliminary filter base 3 from being blocked, which affects the use. The outer sides of the waterproof cover 11 and the protective shell 1 are coated with an anti-corrosion coating to improve the service life of the waterproof cover 11 and the protective shell 1.

[0023] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a filter element body 6 is arranged in the middle of the protective shell 1, and the middle of the lower end of the filter element body 6 is snap-connected with the plug-in column 103 arranged in the middle of the bottom end of the protective shell 1, and the outer side of the upper end of the filter element body 6 is threadedly connected with the upper end of the protective shell 1 through a positioning threaded seat 7, so as to facilitate the installation and fixation of the filter element body 6, and activated carbon particles 8 are filled between the protective shell 1 and the filter element body 6, and a plurality of filter holes are equidistantly provided on the side of the filter element body 6, and a plurality of layers of filter cotton sheets are arranged inside the filter holes, and a plurality of injection ports 701 are symmetrically arranged on the outer side of the upper end of the positioning threaded seat 7, and the activated carbon particles 8 are conveniently filled in the cavity between the outer side of the filter element body 6 and the inside of the protective shell 1 through the injection ports 701, and a sealing cover 9 is arranged on the top of the protective shell 1, and the sealing cover 9 is connected to the top of the protective shell 1 through fixing screws, and the bottom of the water outlet pipe 10 arranged in the middle of the sealing cover 9 passes through the sealing cover 9 and the positioning threaded seat 7 to extend to the top of the filter element body 6.

[0024] During use, the liquid is filtered through the preliminary filter base 3 provided at the bottom of the water inlet channel 2, enters the water inlet channel 2, and then passes through the first filter screen plate 4 and the second filter screen plate 5 to enter the water inlet 101, and then enters the protective shell 1 through the water inlet 101 and the circular filter screen 102, so that the activated carbon particles 8 adsorb and purify the harmful substances in the liquid, and then enters the filter element body 6 through the filter holes on the filter element body 6, and finally is discharged through the outlet pipe 10. When the preliminary filter base 3 is blocked, the liquid extraction and filtration assembly 12 is started, so that the external liquid is transported to the high-pressure injection plate 15 through the liquid inlet pipe 13 and the drain pipe 14 to be sprayed out, and the preliminary filter base 3 is flushed, so that the liquid in the preliminary filter base 3 can flow smoothly, thereby improving the practicality of use.

[0025] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A filter element with a pretreatment structure, comprising a protective housing (1), characterized in that: The bottom of the lower end of the protective shell (1) is provided with a plurality of water inlets (101), and the lower end of the protective shell (1) is provided with a water inlet channel (2) outside the water inlet (101), the bottom of the water inlet channel (2) is provided with a preliminary filtering base (3), and the inside of the water inlet channel (2) is provided with a first filter screen plate (4) and a second filter screen plate (5) in sequence from bottom to top, and a cleaning component is provided inside the water inlet channel (2) between the preliminary filtering base (3) and the first filter screen plate (4), and the protective shell ( 1) A filter element body (6) is arranged in the middle of the interior, and the middle of the lower end of the filter element body (6) is snap-connected with a plug-in column (103) arranged in the middle of the bottom end of the protective shell (1), and at the same time, the outer side of the upper end of the filter element body (6) is threadedly connected with the upper end of the interior of the protective shell (1) through a positioning threaded seat (7), and a sealing cover (9) is arranged on the top of the protective shell (1), and the bottom of the water outlet pipe (10) arranged in the middle of the sealing cover (9) passes through the sealing cover (9) and the positioning threaded seat (7) and extends to the upper part of the interior of the filter element body (6).

2. The filter element with a pretreatment structure according to claim 1, characterized in that: The water inlet (101) is arranged in an annular structure, and a circular filter screen (102) is arranged at the upper end of each water inlet (101). The circular filter screen (102) is made of stainless steel, and the mesh size of the circular filter screen (102) is smaller than that of the first filter screen plate (4) and the second filter screen plate (5).

3. The filter element with a pretreatment structure according to claim 1, characterized in that: Activated carbon particles (8) are filled between the protective shell (1) and the filter element body (6), and a plurality of filter holes are equidistantly provided on the side of the filter element body (6), and multiple layers of filter cotton sheets are arranged inside the filter holes.

4. The filter element with a pretreatment structure according to claim 1, characterized in that: A plurality of injection ports (701) are symmetrically arranged on the outer side of the upper end of the positioning threaded seat (7), and the activated carbon particles (8) are conveniently filled into the cavity between the outer side of the filter element body (6) and the inside of the protective shell (1) through the injection ports (701).

5. The filter element with a pretreatment structure according to claim 1, characterized in that: The cleaning assembly comprises a waterproof cover (11), wherein the middle of the upper end of the waterproof cover (11) is connected to the outer side of the lower end of the protective shell (1), and the middle of the lower end of the waterproof cover (11) is connected to the outer side of the lower end of the water inlet channel (2), and at the same time, a liquid inlet pipe (13) is snap-connected to one side of the waterproof cover (11), and the other end of the liquid inlet pipe (13) is connected to one end of the liquid extraction filter assembly (12), and the other end of the liquid extraction filter assembly (12) is connected to the high-pressure injection plate (15) through the water discharge pipe (14) penetrating the water inlet channel (2), and at the same time, the middle of the upper end of the high-pressure injection plate (15) is connected to the inner wall of the water inlet channel (2) through a fixed cross bar (16).

6. The filter element with a pretreatment structure according to claim 5, characterized in that: The outer sides of the waterproof cover (11) and the protective shell (1) are both coated with an anti-corrosion coating, and the liquid extraction and filtering assembly (12) comprises a mounting shell, a filtering assembly and a liquid extraction assembly.

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