A filtration system

Abstract

The utility model discloses a filter system, including raw water storage tank and integration pre -filtering tower, the sand filter module can be detachably installed on the upper end of inside the integration pre -filtering tower, the inside of integration pre -filtering tower and be located sand filter module below the position on the carbon filter module and resin filter module are communicated in proper order, the output of raw water storage tank is communicated with the three -way switch valve, two output of three -way switch valve are communicated sand filter module and carbon filter module's input respectively, the output of resin filter module is communicated with reverse osmosis filter module, the output of reverse osmosis filter module is communicated with pure water storage tank. The utility model discloses through setting integration pre -filtering tower, reduces the occupation, and sand filter module and resin filter module all adopt detachable design, and when PP cotton is renewed, can change the filter path through three -way switch valve, makes water flow temporary carbon filter module and filters, need not stop machine replacement.

Description

Technical Field

[0001] This utility model relates to the field of chemical water treatment technology, and in particular to a filtration system. Background Technology

[0002] In existing chemical production water treatment systems, multi-stage filtration is typically required to remove impurities and odors from tap water. Traditional pure water filtration systems usually include multiple modules such as PP cotton, activated carbon, resin filtration, and reverse osmosis filtration. However, these modules are often scattered, resulting in large equipment footprints and high installation and maintenance costs. While existing integrated filtration equipment combines multiple filter media, it still suffers from drawbacks such as difficult module replacement and low filtration efficiency. In particular, when a filter module needs maintenance or replacement, it often requires shutdown and disassembly of the entire system. PP cotton, in particular, requires frequent replacement, and frequent shutdowns severely impact production efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems mentioned above, and to provide a filtration system that reduces the footprint and allows for flexible switching of filtration paths according to maintenance conditions or water quality.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A filtration system includes a raw water storage tank and an integrated pre-filtration tower. A sand filter module is detachably installed on the upper part of the integrated pre-filtration tower. A carbon filter module and a resin filter module are sequentially connected inside the integrated pre-filtration tower and below the sand filter module. A three-way switching valve is connected to the output end of the raw water storage tank. The two output ends of the three-way switching valve are respectively connected to the input ends of the sand filter module and the carbon filter module. A reverse osmosis filter module is connected to the output end of the resin filter module. A pure water storage tank is connected to the output end of the reverse osmosis filter module.

[0006] As an improvement to the above technical solution, the integrated pre-filtration tower is internally provided with an upper baffle and a lower baffle, which divide the interior of the integrated pre-filtration tower into an upper sand filtration zone, a middle carbon filtration zone, and a lower resin filtration zone. The sand filter module is detachably installed in the upper sand filtration zone, the carbon filter module is installed in the middle carbon filtration zone, and the resin filter module is detachably installed in the lower resin filtration zone. The two output ends of the three-way switching valve are respectively connected to the upper sand filtration zone and the middle carbon filtration zone.

[0007] As an improvement to the above technical solution, the sand filter module includes a PP cotton filter element, a limiting ring is provided on the upper partition, the PP cotton filter element is movably inserted into the limiting ring, the top of the integrated pre-filtration tower is provided with an upper end cap that can seal the opening end of the upper sand filter zone, the outer periphery of the top of the integrated pre-filtration tower is provided with a lower flange, the outer periphery of the upper end cap is provided with an upper flange that can cooperate with the lower flange, and the upper flange and the lower flange are connected by bolts.

[0008] As an improvement to the above technical solution, the PP cotton filter element includes a filter screen cylinder that can be inserted into a limiting ring. A water inlet channel is formed between the inner wall of the upper sand filter zone and the outer wall of the filter screen cylinder. One of the output ends of the three-way switching valve is connected to the water inlet channel through a full-length pipe. Both ends of the filter screen cylinder are provided with caps. The filter screen cylinder contains a PP cotton core. A central water outlet chamber is formed axially inside the PP cotton core. A sand filter outlet pipe is provided on the upper partition plate, which connects to the outlet end of the central water outlet chamber. The output end of the sand filter outlet pipe is connected to the carbon filter module.

[0009] As an improvement to the above technical solution, the carbon filter module includes a central tube disposed in the middle carbon filter zone. The upper end of the central tube is connected to the lower end of the sand filter outlet pipe. The wall of the sand filter outlet pipe is provided with several water outlet holes. A spiral guide groove is provided axially on the outer wall of the central tube. The interior of the spiral guide groove is filled with activated carbon. A water outlet mesh is provided at the bottom of the output end of the spiral guide groove. A water collection tank is provided on the lower partition plate. Several water distribution holes communicating with the input end of the resin filter module are provided at the bottom of the water collection tank.

[0010] As an improvement to the above technical solution, the integrated pre-filtration tower is provided with an inlet pipe at the top of the medium carbon filter zone, which is connected to the input end of the spiral guide channel. The other output end of the three-way switching valve is connected to the input end of the inlet pipe through a half-pass pipe.

[0011] As an improvement to the above technical solution, the resin filter module includes a filter box that is uniformly connected to the outlet ends of several of the water distribution holes. The filter box is filled with a resin layer. A pre-filter outlet pipe is provided at the bottom of the integrated pre-filter tower. Several resin outlet holes that are uniformly connected to the pre-filter outlet pipe are opened at the bottom of the filter box. The output end of the pre-filter outlet pipe is connected to the reverse osmosis filter module.

[0012] As an improvement to the above technical solution, guide grooves are provided on both inner walls of the lower resin filter zone, and slide rails that can cooperate with the guide grooves are provided on both outer walls of the filter box. An opening and closing door is provided at the position of the integrated pre-filtration tower in the lower resin filter zone.

[0013] As an improvement to the above technical solution, the reverse osmosis filtration module includes a primary RO device and a secondary RO device. The output end of the pre-filtered water outlet pipe is connected to the inlet end of the primary RO device, the freshwater outlet end of the primary RO device is connected to the inlet end of the secondary RO device, and the freshwater outlet end of the secondary RO device is connected to the pure water storage tank.

[0014] As an improvement to the above technical solution, a backwashing module is also included. The backwashing module includes a cleaning tank and a cleaning water pump. The inlet of the cleaning tank is connected to the freshwater outlet of the primary RO device and the secondary RO device. The inlet of the cleaning water pump is connected to the outlet of the cleaning tank. The outlet of the cleaning water pump is connected to the inlet of the primary RO device and the secondary RO device.

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

[0016] This utility model discloses a filtration system that integrates PP cotton filtration, activated carbon filtration, and resin filtration modules into a single, compact pre-filtration tower. This design significantly reduces the equipment's footprint, and the combined filtration effectively removes particulate impurities, odors, and harmful substances from the water. A reverse osmosis filtration module further improves water quality. Furthermore, both the sand filter and resin filter modules are detachable for easy maintenance. When replacing the PP cotton, a three-way switching valve can be used to change the filtration path, temporarily allowing water to flow directly to the carbon filter module without requiring system shutdown, thus improving the system's adaptability and stability. Attached Figure Description

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the system structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the integrated pre-filtration tower in an embodiment of the present invention;

[0020] Figure 3 This is a partial structural diagram of an embodiment of the present utility model. Figure 1 ;

[0021] Figure 4 This is a partial structural diagram of an embodiment of the present utility model. Figure 2 ;

[0022] Figure 5 This is a partial structural diagram of an embodiment of the present utility model. Figure 3 . Detailed Implementation

[0023] 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.

[0024] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] like Figures 1 to 5As shown, this utility model provides a filtration system, including a raw water storage tank 10 and an integrated pre-filtration tower 20. A sand filter module 30 is detachably installed on the upper part of the integrated pre-filtration tower 20. A carbon filter module 40 and a resin filter module 50 are sequentially connected inside the integrated pre-filtration tower 20 and below the sand filter module 30. A three-way switching valve 11 is connected to the output end of the raw water storage tank 10. The two output ends of the three-way switching valve 11 are respectively connected to the input ends of the sand filter module 30 and the carbon filter module 40. A reverse osmosis filter module 60 is connected to the output end of the resin filter module 50. A pure water storage tank 70 is connected to the output end of the reverse osmosis filter module 60. The three-way switching valve 11 is used to control the filtration path of the raw water, that is, to control the raw water to enter the integrated pre-filtration tower 20 from the sand filter module 30 or the carbon filter module 40. When the sand filter module 30 needs to be maintained, the water path can be switched directly to the carbon filter module 40 for filtration without stopping the machine, so as to avoid affecting the supply of chemical water. In addition, it is also possible to select whether to pass through the sand filter module 30 according to the water quality. The three-way switching valve 11 can be a manual or electric switching valve. Its specific structure can be referred to the prior art, and will not be described in detail in this application.

[0027] See Figure 2 In a specific embodiment of this application, the integrated pre-filtration tower 20 is internally provided with an upper partition 21 and a lower partition 22, which divide the interior of the integrated pre-filtration tower 20 into an upper sand filter zone 23, a middle carbon filter zone 24, and a lower resin filter zone 25. The sand filter module 30 is detachably installed in the upper sand filter zone 23, the carbon filter module 40 is installed in the middle carbon filter zone 24, and the resin filter module 50 is detachably installed in the lower resin filter zone 25. The two output ends of the three-way switching valve 11 are respectively connected to the upper sand filter zone 23 and the middle carbon filter zone 24. The integrated pre-filtration tower 20 has a vertical three-layer structure, with the interior of the tower body divided into three areas by the upper partition 21 and the lower partition 22, from top to bottom: the sand filter module 30, the carbon filter module 40, and the resin filter module 50. Of course, in situations where space is limited, the integrated pre-filtration tower 20 can also be arranged horizontally.

[0028] See further Figure 3The sand filter module 30 includes a PP cotton filter element 31. A limiting ring 26 is provided on the upper partition 21, and the PP cotton filter element 31 is movably inserted into the limiting ring 26. The top of the integrated pre-filtration tower 20 is provided with an upper end cap 27 capable of sealing the opening of the upper sand filter zone 23. A lower flange is provided on the outer periphery of the top of the integrated pre-filtration tower 20, and an upper flange capable of cooperating with the lower flange is provided on the outer periphery of the upper end cap 27. The upper and lower flanges are connected by bolts. The bottom of the PP cotton filter element 31 is inserted and fixed within the limiting ring 26. The upper end cap 27 can be opened for replacement of the PP cotton filter element 31, and a lifting handle can be provided on the top of the PP cotton filter element 31 for easy extraction and removal of the entire element.

[0029] Specifically, the PP cotton filter element 31 includes a filter screen cylinder 32 that can be inserted into the limiting ring 26. A water inlet channel is formed between the inner wall of the upper sand filter zone 23 and the outer wall of the filter screen cylinder 32. One of the output ends of the three-way switching valve 11 is connected to the water inlet channel through the full-length pipe 12. Both ends of the filter screen cylinder 32 are provided with caps 33. The filter screen cylinder 32 is provided with a PP cotton core 34 inside. A central water outlet cavity 35 is opened axially inside the PP cotton core 34. The upper partition plate 21 is provided with a sand filter outlet pipe 36 that connects to the liquid outlet end of the central water outlet cavity 35. The output end of the sand filter outlet pipe 36 is connected to the carbon filter module 40. In this system, raw water enters through the inlet channel. The filter cylinder 32 can be made of stainless steel and is used to filter large-diameter particles in the raw water. Its pore size can be set according to actual needs. The PP cotton core 34 is filled inside the filter cylinder 32. The central outlet cavity 35 is connected to the internal channel of the core, which means that the filtration method of "outer inlet and inner outlet" is adopted. The raw water enters from the outside of the filter cylinder 32, is filtered by the PP cotton, and is discharged from the central outlet cavity 35. Compared with the traditional structure, the filtration area is increased.

[0030] Figure 4In a specific embodiment of this application, the carbon filter module 40 includes a central tube 41 disposed in the middle carbon filter zone 24. The upper end of the central tube 41 is connected to the lower end of the sand filter outlet pipe 36. The wall of the sand filter outlet pipe 36 is provided with a plurality of water outlet holes 37. The outer wall of the central tube 41 is provided with a spiral guide groove 42 along the axial direction. The interior of the spiral guide groove 42 is filled with activated carbon 43. The bottom of the output end of the spiral guide groove 42 is provided with a water outlet mesh 44. The lower partition plate 22 is provided with a water collection tank 28. The bottom of the water collection tank 28 is provided with a plurality of water distribution holes 29 that connect to the input end of the resin filter module 50. The water, after being filtered through PP cotton, is ejected from several outlet holes 37 on the wall of the sand filter outlet pipe 36 and falls into the top of the spiral guide channel 42. After being filtered by activated carbon, it is finally discharged from the outlet mesh 44 at the bottom. By setting up a spiral guide activated carbon filter structure, the water flow can be guided to flow downwards in a spiral to increase the filtration time and enhance the filtration effect. The filling height of the activated carbon 43 can occupy 80% of the depth of the channel. The design of the water collection tank 28 and several water distribution holes 29 ensures that the filtered water can be evenly distributed into the resin filter module 50.

[0031] Furthermore, if maintenance or replacement of the sand filter module 30 is required, a water flow path is provided. The integrated pre-filtration tower 20 is located at the top of the medium carbon filter zone 24 and is provided with an inlet pipe 45 that connects to the input end of the spiral guide channel 42. The other output end of the three-way switching valve 11 is connected to the input end of the inlet pipe 45 through the half-pass pipe 13, and the raw water directly enters the top of the spiral guide channel 42 through the inlet pipe 45.

[0032] See Figure 5 In a specific embodiment of this application, the resin filter module 50 includes a filter box 51 that is uniformly connected to the outlet ends of several of the water distribution holes 29. The filter box 51 is filled with a resin layer 52. The bottom of the integrated pre-filtration tower 20 is provided with a pre-filtration outlet pipe 14. The bottom of the filter box 51 is provided with several resin outlet holes 53 that are uniformly connected to the pre-filtration outlet pipe 14. The output end of the pre-filtration outlet pipe 14 is connected to the reverse osmosis filter module 60. Guide grooves 54 are provided on both sides of the inner wall of the lower resin filter zone 25. Slide rails 55 that can cooperate with the guide grooves 54 are provided on both sides of the outer wall of the filter box 51. The integrated pre-filtration tower 20 is provided with an opening and closing door at the position of the lower resin filter zone 25. The filter box 51 adopts a drawer-type structure. By opening the opening and closing door, the filter box 51 can be taken out and the resin layer 52 can be replaced. The integrated pre-filtration tower 20 can adopt a square tower body or a circular tower body. Specifically, it can refer to the existing circular storage cabinet drawer to realize the pull-out function.

[0033] See Figure 1The reverse osmosis filtration module 60 includes a primary RO unit 61 and a secondary RO unit 62. The output end of the pre-filtered water outlet pipe 14 is connected to the inlet end of the primary RO unit 61, the freshwater outlet end of the primary RO unit 61 is connected to the inlet end of the secondary RO unit 62, and the freshwater outlet end of the secondary RO unit 62 is connected to the pure water storage tank 70. The specific structures of the primary RO unit 61 and the secondary RO unit 62 can be referred to the prior art, and will not be described in detail in this application.

[0034] Furthermore, the system also includes a backwashing module 80, which comprises a cleaning tank 81 and a cleaning water pump 82. The inlet of the cleaning tank is connected to the freshwater outlet of both the primary RO unit 61 and the secondary RO unit 62. The inlet of the cleaning water pump 82 is connected to the outlet of the cleaning tank 81, and the outlet of the cleaning water pump 82 is connected to the inlet of both the primary RO unit 61 and the secondary RO unit 62. The cleaning tank 81 stores the cleaning solution, which is typically treated pure water. Specific cleaning agents can also be added as needed to enhance the cleaning effect. The cleaning water pump 82 extracts the cleaning solution from the cleaning tank 81 and delivers it to the reverse osmosis filtration module 60 at a certain pressure.

[0035] This utility model discloses a filtration system that integrates PP cotton filtration, activated carbon filtration, and resin filtration modules into a single, compact pre-filtration tower 10. This significantly reduces the equipment's footprint, and the combined filtration effectively removes particulate impurities, odors, and harmful substances from the water. The water quality is further improved by a reverse osmosis filtration module 60. Furthermore, both the sand filter module and the resin filter module are detachable for easy maintenance. When replacing the PP cotton filter, the filtration path can be changed via a three-way switching valve 11, allowing the water to temporarily flow directly to the carbon filter module without requiring system shutdown, thus improving the system's adaptability and stability.

[0036] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.

Claims

1. A filtration system, characterized in that, The system includes a raw water storage tank and an integrated pre-filtration tower. A sand filter module is detachably installed on the upper part of the integrated pre-filtration tower. A carbon filter module and a resin filter module are sequentially connected inside the integrated pre-filtration tower and below the sand filter module. A three-way switching valve is connected to the output end of the raw water storage tank. The two output ends of the three-way switching valve are respectively connected to the input ends of the sand filter module and the carbon filter module. A reverse osmosis filter module is connected to the output end of the resin filter module. A pure water storage tank is connected to the output end of the reverse osmosis filter module.

2. The filtration system according to claim 1, characterized in that, The integrated pre-filtration tower is internally equipped with an upper baffle and a lower baffle, which divide the interior of the integrated pre-filtration tower into an upper sand filtration zone, a middle carbon filtration zone, and a lower resin filtration zone. The sand filter module is detachably installed in the upper sand filtration zone, the carbon filter module is installed in the middle carbon filtration zone, and the resin filter module is detachably installed in the lower resin filtration zone. The two outputs of the three-way switching valve are respectively connected to the upper sand filtration zone and the middle carbon filtration zone.

3. The filtration system according to claim 2, characterized in that, The sand filter module includes a PP cotton filter element. A limiting ring is provided on the upper partition plate. The PP cotton filter element is movably inserted into the limiting ring. The top of the integrated pre-filtration tower is provided with an upper end cap that can seal the opening end of the upper sand filter zone. A lower flange is provided on the outer periphery of the top of the integrated pre-filtration tower. An upper flange that can cooperate with the lower flange is provided on the outer periphery of the upper end cap. The upper flange and the lower flange are connected by bolts.

4. A filtration system according to claim 3, characterized in that, The PP cotton filter element includes a filter screen cylinder that can be inserted into a limiting ring. A water inlet channel is formed between the inner wall of the upper sand filter zone and the outer wall of the filter screen cylinder. One of the output ends of the three-way switching valve is connected to the water inlet channel through a full-length pipe. Both ends of the filter screen cylinder are provided with caps. The filter screen cylinder contains a PP cotton core. A central water outlet chamber is formed axially inside the PP cotton core. A sand filter outlet pipe is provided on the upper partition plate, which is connected to the outlet end of the central water outlet chamber. The output end of the sand filter outlet pipe is connected to the carbon filter module.

5. A filtration system according to claim 4, characterized in that, The carbon filter module includes a central tube located within the medium carbon filter zone. The upper end of the central tube is connected to the lower end of the sand filter outlet pipe. The sand filter outlet pipe has several water outlet holes on its wall. A spiral guide groove is arranged axially on the outer wall of the central tube. The spiral guide groove is filled with activated carbon. A water outlet mesh is provided at the bottom of the output end of the spiral guide groove. A water collection tank is provided on the lower partition plate. Several water distribution holes communicating with the input end of the resin filter module are provided at the bottom of the water collection tank.

6. A filtration system according to claim 5, characterized in that, The integrated pre-filtration tower is located at the top of the medium carbon filter zone and has an inlet pipe that connects to the input end of the spiral guide channel. The other output end of the three-way switching valve is connected to the input end of the inlet pipe through a half-pass pipe.

7. A filtration system according to claim 5, characterized in that, The resin filter module includes a filter box that is uniformly connected to the outlet ends of several of the water distribution holes. The filter box is filled with a resin layer. The bottom of the integrated pre-filtration tower is provided with a pre-filtration outlet pipe. The bottom of the filter box is provided with several resin outlet holes that are uniformly connected to the pre-filtration outlet pipe. The output end of the pre-filtration outlet pipe is connected to the reverse osmosis filter module.

8. A filtration system according to claim 7, characterized in that, Guide grooves are provided on both inner walls of the lower resin filter zone, and slide rails that can cooperate with the guide grooves are provided on both outer walls of the filter box. The integrated pre-filtration tower is provided with an opening and closing door at the position of the lower resin filter zone.

9. A filtration system according to claim 7, characterized in that, The reverse osmosis filtration module includes a primary RO device and a secondary RO device. The output end of the pre-filtered water outlet pipe is connected to the inlet end of the primary RO device, the freshwater outlet end of the primary RO device is connected to the inlet end of the secondary RO device, and the freshwater outlet end of the secondary RO device is connected to the pure water storage tank.

10. A filtration system according to claim 9, characterized in that, It also includes a backwashing module, which includes a cleaning tank and a cleaning water pump. The inlet of the cleaning tank is connected to the freshwater outlet of the primary RO device and the secondary RO device. The inlet of the cleaning water pump is connected to the outlet of the cleaning tank. The outlet of the cleaning water pump is connected to the inlet of the primary RO device and the secondary RO device.

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