A security filter

Abstract

The application relates to a security filter and relates to the field of water treatment filtering equipment. The security filter comprises a purification cylinder, a cover cylinder, a supporting piece and a filtering piece, a water inlet port is fixedly connected to the top of one side of the outer wall of the purification cylinder, a water outlet port is fixedly connected to the bottom of the other side of the outer wall of the purification cylinder, a flow collecting box is horizontally fixed to the lower side of the inside of the purification cylinder, and a water outlet pipe of the flow collecting box is fixedly connected with the water outlet port. The application sets filtering structures between a multi-medium filter and a membrane filtering equipment such as reverse osmosis, further purifies particles in water, avoids that if small substances enter the membrane filtering equipment such as reverse osmosis, the membrane filtering elements are damaged, and the service life and filtering precision of the membrane filtering equipment are improved.

Description

Technical Field

[0001] This application relates to the technical field of water treatment filtration equipment, and in particular to a security filter. Background Technology

[0002] In the field of water treatment, because water often contains various suspended particles, organic matter, and a variety of dissolved substances, directly using tap water or surface water as a drinking water source often fails to meet the water quality requirements of modern society. Although traditional water treatment methods can remove some impurities, their effectiveness is often limited when faced with complex and diverse water quality problems. Therefore, developing efficient water treatment technologies has become particularly important.

[0003] Against this backdrop, pretreatment equipment such as multi-media filters are widely used in the pretreatment stage, primarily to remove large suspended solids, colloidal substances, and some organic matter from water, thereby reducing the burden on subsequent treatment devices and improving overall treatment efficiency and effectiveness. However, relying solely on pretreatment equipment is still insufficient to fully meet modern water quality requirements, necessitating further fine filtration technologies. Reverse osmosis technology, as a highly efficient membrane filtration technology, can effectively remove dissolved solids, organic matter, bacteria, viruses, and some heavy metal ions from water, thus achieving high-purity water quality standards.

[0004] Regarding the aforementioned technologies, the inventors discovered that although pretreatment equipment such as multi-media filters can remove some impurities, some fine substances, such as tiny quartz sand and manganese sand particles, still remain in the filtered water. However, there is a lack of equipment to further purify the particles in the water between multi-media filters and membrane filtration equipment such as reverse osmosis. If these fine substances enter membrane filtration equipment such as reverse osmosis, they will damage the membrane filter elements and affect the service life and filtration accuracy of the membrane filtration equipment. Utility Model Content

[0005] In order to overcome the lack of a device for further purifying water particles between existing multi-media filters and membrane filtration equipment such as reverse osmosis, which can damage membrane filter elements and affect the service life and filtration accuracy of membrane filtration equipment if these fine substances enter the membrane filtration equipment, this application provides a security filter.

[0006] The security filter provided in this application adopts the following technical solution: A security filter includes a purification cylinder, a cover cylinder, a support member, and a filter element. A water inlet port is connected and fixed to the top of one side of the outer wall of the purification cylinder, and a drain port is connected and fixed to the bottom of the other side of the outer wall of the purification cylinder. A manifold box is horizontally fixed to the lower inside of the purification cylinder, and the drain pipe of the manifold box is connected and fixed to the drain port. Multiple filter elements are evenly and vertically assembled on the lower side of the inside of the cover cylinder, and the bottom ends of the multiple filter elements are connected and inserted into the top surface of the manifold box. The cover cylinder is assembled at the top of the purification cylinder, and the support is connected and assembled at the bottom of the purification cylinder. The filter element includes a mesh tube, the top of which is detachably assembled inside the lower side of the cover tube, and a cloth tube is fitted over the outside of the mesh tube, and a filter cartridge is fitted over the outside of the cloth tube.

[0007] By adopting the above technical solution, the purification cylinder is used to house other components, introduce water through the inlet port, and discharge purified water through the outlet port; the manifold box is used to collect the drainage from the filter elements and discharge the water out of the purification cylinder through the drain pipe; the cover provides installation space for the filter elements, allowing them to be suspended inside the purification cylinder; the support is used to support the purification cylinder, ensuring its stability and structural strength. The filter elements include a mesh tube, a cloth tube, and a filter cartridge. The mesh tube is used to intercept large particulate impurities, while the cloth tube and filter cartridge further filter smaller particles and impurities. The filter cartridge is made of non-toxic and odorless polypropylene, with a deep filtration structure that is loose on the outside and dense on the inside. It has uniform pore size, high filtration efficiency, and can effectively remove suspended solids, particles, rust, and other impurities from liquids, improving water filtration accuracy. It also has excellent acid and alkali resistance, a wide range of applications, and can maintain good filtration performance in the filtration of liquids with different acid and alkaline properties. The overall working principle is as follows: water enters the purification cylinder through the inlet port and passes through multiple filter elements in sequence to remove impurities. After being purified through the filter cylinder, cloth cylinder, and mesh pipe, the water is discharged from the drain port, thus achieving a highly efficient water purification effect. This device sets up a filtration structure between the multi-media filter and membrane filtration equipment such as reverse osmosis to further clean the particles in the water. This prevents fine substances from entering the membrane filtration equipment such as reverse osmosis and damaging the membrane filter elements, thereby improving the service life and filtration accuracy of the membrane filtration equipment.

[0008] Optionally, the bottom end of the network tube is connected and fixed with a screw ring, and a threaded insert is threadedly connected to the screw ring, and a sealing gasket is fitted on the outside of the threaded insert.

[0009] By adopting the above technical solution, a stable connection is first achieved through the threaded engagement of the screw ring and the threaded insert, and then the sealing gasket is used to ensure the sealing of the connection, thereby forming a reliable and sealed connection structure.

[0010] Optionally, multiple insert cylinders are uniformly and vertically connected and fixed on the top surface of the junction box, and the insert cylinders are inserted and fitted with threaded insert cylinders.

[0011] By adopting the above technical solution, firstly, the threaded insert is inserted into the insert cylinder at the top of the junction box, and the insert is used to make them firmly connected; then, according to actual needs, the position and number of the threaded insert are adjusted to realize the rapid assembly and configuration of different components, and finally form a modular system that can flexibly adapt to different application scenarios.

[0012] Optionally, multiple guide tubes are evenly and vertically fixed on the bottom surface of the cover tube, and magnetic blocks are fixed inside the multiple guide tubes.

[0013] By adopting the above technical solution, the cover is fixed in a designated position by the guide tube on the bottom surface. The magnetic block is kept fixed in the guide tube and can provide magnetic force when needed. Through the action of magnetic force, it can attract objects with opposite magnetism or push away objects with the same magnetism, thereby achieving efficient processing or separation of the target object.

[0014] Optionally, a guide post is vertically fixed at the top of the network tube, and the guide post is inserted into the guide tube for limiting, and the top of the guide post is magnetically connected to the magnetic block.

[0015] By adopting the above technical solution, the guide post can not only ensure the vertical position of the network tube, but also provide additional guiding support through its cooperation with the guide cylinder; while the magnetic block further enhances the fixing strength and stability through its magnetic connection, ensuring the reliability and durability of the entire structure during use.

[0016] Optionally, a flange ring is horizontally fixed at the top of the purification cylinder, and the flange ring and the cover cylinder are fixedly assembled by bolts. External threads are provided on the lower side of the outer wall of the purification cylinder.

[0017] By adopting the above technical solution, air first enters the purification cylinder from the outside, is filtered and purified by the internal purification device, and then is discharged through the sealed outlet of the cover cylinder. Throughout the process, the flange ring and external thread ensure the airtightness and disassembly of the device, improving the convenience of maintenance and purification efficiency.

[0018] Optionally, the support includes a support screw cylinder, which is connected to the external thread of the purification cylinder. Multiple brackets are vertically fixed on the outer wall of the support screw cylinder, and a mesh is horizontally fixed inside the support screw cylinder. A drain pipe is connected and fixed to the bottom end of the support screw cylinder, and a valve is installed on the drain pipe.

[0019] By adopting the above technical solution, the purification cylinder is stably installed by the supporting screw, the internal mesh intercepts impurities, the bracket on the supporting screw provides stable support, and pollutants and sewage are discharged through the drain pipe and valve, thereby realizing the normal use and maintenance of the purification cylinder.

[0020] Optionally, a perforated frame is horizontally fixed on the outer wall of the purification cylinder, and a hydraulic rod is vertically fixed on the perforated frame; a rod frame is vertically fixed on the top surface of the cover cylinder, and the rod frame is vertically slidably inserted into the perforated frame, and the rod frame is fixedly connected to the output end of the hydraulic rod.

[0021] By employing the above technical solution, a hydraulic rod is used to transmit hydraulic power, pushing the cover cylinder to move vertically up and down. The rod holder is fixed to the top surface of the cover cylinder and vertically slidably connected to the orifice frame, ensuring precise vertical movement of the cover cylinder. The rod holder is fixedly connected to the output end of the hydraulic rod, allowing the thrust of the hydraulic rod to be directly transmitted to the cover cylinder, realizing its opening and closing actions. In summary, this device controls the extension and retraction of the hydraulic rod, enabling the cover cylinder to move vertically on the purification cylinder, thereby opening and closing the cover cylinder for convenient purification operations or maintenance.

[0022] In summary, this application includes at least one of the following beneficial technical effects: First, the purification cylinder is used to house other components and introduces water through the inlet port and discharges the purified water through the outlet port; the manifold box is used to collect the drainage from the filter element and discharge the water out of the purification cylinder through the drain pipe. Secondly, the cover sleeve provides installation space for the filter elements, allowing them to suspend inside the purification cylinder; the support element supports the purification cylinder, ensuring its stability and structural strength. The filter elements include a mesh tube, a cloth tube, and a filter cartridge. The mesh tube intercepts large particles of impurities, while the cloth tube and filter cartridge further filter smaller particles and impurities. The filter cartridge is made of non-toxic and odorless polypropylene, featuring a deep filtration structure with a loose outer layer and a dense inner layer. It has uniform pore size, high filtration efficiency, and can effectively remove suspended solids, particles, rust, and other impurities from liquids, improving water filtration precision. It also possesses excellent acid and alkali resistance, making it widely applicable and maintaining good filtration performance in liquids with varying acidity and alkalinity.

[0023] Water enters the purification cylinder through the inlet port and passes through multiple filter elements to remove impurities. After being purified through the filter cylinder, cloth cylinder, and mesh pipe, the water is discharged from the drain port, achieving a highly efficient water purification effect. This filtration structure, placed between the multi-media filter and membrane filtration equipment such as reverse osmosis, further cleans particles in the water, preventing fine substances from damaging the membrane filter elements if they enter the reverse osmosis membrane filtration equipment, thus improving the service life and filtration accuracy of the membrane filtration equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state; Figure 3 This is a schematic diagram of the structure of the purification cylinder in the decomposed state according to an embodiment of this application; Figure 4 This is a schematic diagram of the cap cylinder in an exploded state according to an embodiment of this application; Figure 5 This is a schematic diagram of the filter element in the disassembled state according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the support component in the exploded state according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Purification cylinder; 11. Water inlet port; 12. Drain port; 13. Manifold box; 14. Insert cylinder; 15. External thread; 16. Hole frame; 17. Hydraulic rod; 18. Flange ring; 2. Cover cylinder; 21. Guide cylinder; 22. Magnetic block; 23. Rod frame; 3. Support component; 31. Support screw cylinder; 32. Bracket; 33. Mesh; 34. Sewage pipe; 4. Filter element; 41. Mesh tube; 411. Threaded ring; 412. Guide post; 42. Cloth cylinder; 43. Filter cylinder; 44. Threaded cylinder; 45. Sealing gasket. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings.

[0027] This application discloses a security filter. (Refer to...) Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A security filter includes a purification cylinder 1, a cover cylinder 2, a support member 3, and a filter element 4. A water inlet port 11 is fixedly connected to the top of one side of the outer wall of the purification cylinder 1, and a drain port 12 is fixedly connected to the bottom of the other side of the outer wall of the purification cylinder 1. A manifold box 13 is horizontally fixed to the lower interior of the purification cylinder 1, and the drain pipe of the manifold box 13 is connected and fixedly connected to the drain port 12. The purification cylinder 1 serves as the core container of the entire security filter, used to load and protect the filter element 4 and ensure the orderly flow of water within it. The purification cylinder 1 is made of 304 stainless steel, which has good corrosion resistance. This system can adapt to various water quality environments during water treatment, extending the overall service life of the filtration device. The inlet port 11 is the entrance for water to enter the purification cylinder 1, ensuring smooth water flow. The outlet port 12 is the outlet for water to flow out of the purification cylinder 1, used to discharge the filtered water. The manifold 13 is located on the lower side of the purification cylinder 1; its main function is to collect and concentrate the filtered water flow during the operation of the filter element 4, ensuring smooth water discharge. The cover cylinder 2 and the support element 3 together serve as protective components, with correct positioning and a stable support system, preventing the filter element 4 from loosening or shifting during operation. Overall, this security filter, through its reasonable structural design, achieves orderly water flow and efficient filtration, ensuring the purity of the filtered water and providing a reliable water source for subsequent processes. Multiple filter elements 4 are evenly and vertically assembled on the lower side of the inner side of the cover cylinder 2. The bottom ends of the multiple filter elements 4 are connected and inserted into the top surface of the manifold box 13. The cover cylinder 2 is assembled at the top of the purification cylinder 1, and the support member 3 is connected and assembled at the bottom of the purification cylinder 1. The purification cylinder 1 serves as the main structure, used to accommodate the various internal components and ensure the stability of the overall structure. The cover cylinder 2 is located at the top of the purification cylinder 1, forming a seal around the internal components and providing support for the installation of the filter elements 4 and the manifold box 13. The support member 3 is installed at the bottom of the purification cylinder 1 to enhance the stability of the structure. Multiple filter elements 4 are evenly and vertically installed on the lower side of the inner side of the cover cylinder 2, using their own properties to remove suspended solids and impurities in the water, enhancing the water purification effect. The bottom ends of the filter elements 4 are inserted into the top surface of the manifold box 13 through a connection, ensuring that the purified water can be smoothly collected and discharged. When the water passes through the filter element 4, the suspended solids and impurities are effectively removed. After multiple filtrations, the clean water is collected in the manifold 13 and discharged through the relevant outlet, thereby achieving efficient water purification. The filter element 4 includes a mesh tube 41, the top of which is detachably assembled to the lower inner side of the cover cylinder 2. A cloth sleeve 42 is fitted over the mesh tube 41, and a filter cartridge 43 is fitted over the cloth sleeve 42. The filter element 4 mainly consists of the mesh tube 41, the cloth sleeve 42, and the filter cartridge 43. The mesh tube 41, located on the lower inner side of the cover cylinder 2, is used to initially intercept larger impurities, preventing them from entering subsequent filtration steps. The cloth sleeve 42, fitted over the mesh tube 41, further enhances the interception effect, providing a soft barrier layer that helps reduce the impact of impurities on subsequent filter materials. The filter cartridge 43, fitted over the cloth sleeve 42, acts as the final filtration barrier, enabling more precise filtration of minute impurities in liquids or gases. These components work together to ensure the purity of the fluid through multi-stage filtration. The working principle of the entire system is as follows: the fluid is first initially intercepted through the mesh tube 41, then enters between the cloth sleeve 42 and the filter cartridge 43, undergoes two layers of filtration, and finally flows out from the outlet of the filter cartridge 43, achieving a highly efficient filtration effect. The purification cylinder 1 houses other components and introduces water through the inlet port 11, while discharging purified water through the outlet port 12. The manifold 13 collects the drainage from the filter element 4 and discharges the water from the purification cylinder 1 through the outlet pipe. The cover 2 provides installation space for the filter element 4, allowing it to be suspended inside the purification cylinder. The support 3 supports the purification cylinder, ensuring its stability and structural strength. The filter element 4 includes a mesh tube 41, a cloth tube 42, and a filter cartridge 43. The mesh tube intercepts large particles of impurities, while the cloth tube and filter cartridge further filter smaller particles and impurities. The filter cartridge 43 is made of non-toxic and odorless polypropylene and has a deep filtration structure with a loose outer layer and a dense inner layer. It has uniform pore size, high filtration efficiency, and can effectively remove suspended solids, particles, rust, and other impurities from liquids, improving water filtration accuracy. It also has excellent acid and alkali resistance, a wide range of applications, and can maintain good filtration performance in liquids with different acid and alkaline properties. The overall working principle is as follows: Water enters the purification cylinder 1 through the inlet port 11 and passes through multiple filter elements 4 in sequence to remove impurities from the water. After being purified layer by layer through the filter cylinder 43, cloth cylinder 42 and mesh pipe 41, it is discharged from the drain port 12, thereby achieving the effect of highly efficient water purification. This equipment sets up a filtration structure between the multi-media filter and the reverse osmosis membrane filtration equipment to further clean the particles in the water. It prevents fine substances from entering the reverse osmosis membrane filtration equipment and damaging the membrane filter elements, thereby improving the service life and filtration accuracy of the membrane filtration equipment.

[0028] Reference Figure 5The bottom end of the mesh tube 41 is connected and fixed with a screw ring 411, and a threaded insert 44 is threadedly assembled on the screw ring 411. A sealing gasket 45 is fitted over the outside of the threaded insert 44. The mesh tube 41, as a main component, serves as a connector and support. The screw ring 411 at its bottom end allows for detachable connection with external equipment or other components. The screw ring 411 provides a threaded connection interface, facilitating a tight connection with the threaded insert 44. The threaded insert 44 is fixed through the engagement of the threads and the screw ring 411, ensuring a stable connection. The sealing gasket 45, fitted over the threaded insert 44, further enhances the sealing performance at the connection, preventing liquid or gas leakage. The overall working principle is as follows: first, a stable connection is achieved through the threaded engagement of the screw ring 411 and the threaded insert 44; then, the sealing gasket 45 ensures a tight seal at the connection, thus forming a reliable and sealed connection structure.

[0029] Reference Figure 3 and Figure 5 Multiple insert cylinders 14 are evenly and vertically connected and fixed on the top surface of the combiner box 13, and the insert cylinders 14 are fitted with threaded insert cylinders 44. The function of the combiner box 13 is to provide a basic platform for the installation and connection of multiple components. The multiple insert cylinders 14 evenly and vertically arranged on its top surface are used to fix the threaded insert cylinders 44, ensuring that these insert cylinders can be firmly installed on the combiner box. Through the fitting of the threaded insert cylinders 44 with their insert cylinders 14, not only can a stable fixation be achieved, but it also facilitates subsequent assembly and disassembly, ensuring that the system has high reliability and maintenance convenience. The operating principle of the entire system is as follows: First, the threaded insert cylinders 44 are inserted into the insert cylinders 14 on the top of the combiner box 13, and the fitting makes them firmly connected; then, according to actual needs, by adjusting the position and number of threaded insert cylinders 44, the rapid assembly and configuration of different components can be achieved, ultimately forming a modular system that can flexibly adapt to different application scenarios.

[0030] Reference Figure 4 Multiple guide tubes 21 are evenly and vertically fixed on the bottom surface of the cover cylinder 2, and magnetic blocks 22 are fixed inside the guide tubes 21. The multiple guide tubes 21 evenly and vertically fixed on the bottom surface of the cover cylinder 2 mainly serve to guide and support, ensuring that the magnetic blocks 22 can be accurately placed in the designated position and remain stable during operation. The magnetic blocks 22 are fixed inside the guide tubes 21 and can provide strong magnetic force to attract or repel other magnetic objects, thereby achieving precise positioning or separation of the target object. Its working principle is: the cover cylinder 2 is fixed in the designated position by the guide tubes 21 on the bottom surface, the magnetic blocks 22 are kept fixed inside the guide tubes 21 and can provide magnetic force when needed. Through the action of magnetic force, objects with opposite magnetism can be attracted, or objects with the same magnetism can be pushed away, thereby achieving efficient processing or separation of the target object.

[0031] Reference Figure 4 and Figure 5 The top of the mesh tube 41 is vertically fixed with a guide post 412, which is inserted into the guide tube 21 for positioning. The top of the guide post 412 is magnetically connected to the magnetic block 22. The mesh tube 41 serves as a structural support component, with the guide post 412 vertically fixed at its top for precise vertical connection with the guide tube 21, ensuring the stability of the mesh tube in the vertical direction. The guide tube 21 provides a reliable slot for the guide post 412, ensuring a stable fit between the two in the vertical direction. The magnetic block 22, through its magnetic characteristics, magnetically connects to the top of the guide post 412, not only fixing the two together but also effectively enhancing the overall rigidity and durability of the connection, preventing loosening. The overall working principle is as follows: the guide post 412 not only ensures the vertical fixation of the mesh tube 41 but also provides additional guiding support through its cooperation with the guide tube 21; while the magnetic block 22, through its magnetic connection, further enhances this fixing strength and stability, ensuring the reliability and durability of the entire structure during use.

[0032] Reference Figure 4 and Figure 5 The purification cylinder 1 has a flange ring 18 horizontally fixed at its top, and the flange ring 18 is bolted to the cover cylinder 2. An external thread 15 is provided on the lower outer wall of the purification cylinder 1. The main function of the purification cylinder 1 is to support and fix the core component of the entire purification device. The flange ring 18 horizontally fixed at its top ensures a tight connection between the purification cylinder 1 and the cover cylinder 2, and the bolted assembly ensures structural stability. The external thread 15 provides the possibility of threaded connection for components that may require subsequent disassembly and maintenance, allowing for easy assembly or disassembly with other parts. The cover cylinder 2 tightly seals the purification cylinder 1 through the flange ring 18 and bolts, ensuring that airflow is purified only through the interior of the purification cylinder, thus improving the purification effect. The overall working principle is that air first enters the purification cylinder 1 from the outside, is filtered and purified by the internal purification device, and then is discharged through the sealed outlet of the cover cylinder 2. Throughout the process, the flange ring and external thread ensure the airtightness and removability of the device, improving maintenance convenience and purification efficiency.

[0033] Reference Figure 3 and Figure 6The support component 3 includes a support screw cylinder 31, which is assembled and connected to the external thread 15 of the purification cylinder 1. Multiple supports 32 are vertically fixed on the outer wall of the support screw cylinder 31. A mesh 33 is horizontally fixed inside the support screw cylinder 31, and a drain pipe 34 is connected and fixed to the bottom end of the support screw cylinder 31. A valve is installed on the drain pipe 34. The function of the support component 3 is to support and stabilize the purification cylinder 1. The support screw cylinder 31 is tightly assembled and connected to the purification cylinder 1 through the external thread 15 to ensure the stability of the purification cylinder. Multiple supports 32 are vertically fixed on the outer wall of the support screw cylinder 31 to enhance the overall structural support. The horizontally fixed mesh 33 inside can intercept and screen large particulate impurities generated during the purification process, ensuring the purification effect. The drain pipe 34 is located at the bottom end of the support screw cylinder 31 and connects to the inside of the support screw cylinder, facilitating the discharge of filtered impurities and wastewater. The valve installed on the drain pipe can flexibly control the discharge process. Its working principle is as follows: the purification cylinder is stably installed by the support screw, the internal mesh intercepts impurities, the bracket on the support screw provides stable support, and pollutants and sewage are discharged through the drain pipe and valve, thereby realizing the normal use and maintenance of the purification cylinder.

[0034] Reference Figure 3 and Figure 6 A perforated frame 16 is horizontally fixed to the outer wall of the purification cylinder 1, and a hydraulic rod 17 is vertically fixed to the perforated frame 16. A rod frame 23 is vertically fixed to the top surface of the cover cylinder 2, and the rod frame 23 is vertically slidably inserted into the perforated frame 16, and the rod frame 23 is fixedly connected to the output end of the hydraulic rod 17. The function of the perforated frame 16 is to provide an installation base and guide structure for the hydraulic rod 17 by being horizontally fixed to the outer wall of the purification cylinder 1, ensuring that the hydraulic rod can move in a specific direction. The hydraulic rod 17 is used to transmit hydraulic power to push the cover cylinder 2 to move vertically up and down. The rod frame 23 is fixed to the top surface of the cover cylinder 2 and is vertically slidably inserted into the perforated frame 16, ensuring that the cover cylinder can move accurately in the vertical direction. The rod frame 23 is fixedly connected to the output end of the hydraulic rod 17, so that the thrust of the hydraulic rod can be directly transmitted to the cover cylinder to realize its opening and closing action. In summary, this device controls the extension and retraction of the hydraulic rod to move the cover cylinder vertically on the purification cylinder, thereby opening and closing the cover cylinder to facilitate purification operations or maintenance.

[0035] The implementation principle of a security filter according to an embodiment of this application is as follows: First, when multiple filter elements 4 are vertically assembled on the bottom surface of the cover cylinder 2, the guide post 412 at the top of the mesh cylinder 41 is inserted into the guide cylinder 21, and the guide post 412 is magnetically attracted by the magnetic block 22 in the guide cylinder 21, thus completing the fixed assembly of the filter element 4 and the cover cylinder 2. Then the function of the support member 3 is to support and stabilize the purification cylinder 1. Its support screw 31 is tightly assembled and connected to the purification cylinder 1 through the external thread 15 to ensure the stability of the purification cylinder. Multiple brackets 32 are vertically fixed on the outer wall of the support screw 31 to enhance the support force of the overall structure. Then, the hydraulic rod 17 is activated to transmit hydraulic power, pushing the cover cylinder 2 to move vertically downward, causing the threaded insert 44 at the bottom of the mesh cylinder 41 of multiple filter elements 4 to be inserted into the insert cylinder 14 of the manifold box 13, thereby connecting and assembling multiple filter elements 4 with the manifold box 13, and then the cover cylinder 2 is fixed and assembled by screws. Thus, the water discharged from the multi-media filter enters the purification cylinder 1 through the inlet port 11, and passes through multiple filter elements 4 in sequence to remove impurities from the water. After being purified layer by layer through the filter cylinder 43, cloth cylinder 42 and mesh pipe 41, it is discharged from the drain port 12 and guided into reverse osmosis and other membrane filtration equipment for further treatment.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A security filter, characterized in that, The purification cylinder (1), cover cylinder (2), support member (3) and filter element (4) are included. The top of one side of the outer wall of the purification cylinder (1) is connected to and fixed with a water inlet port (11), and the bottom of the other side of the outer wall of the purification cylinder (1) is connected to and fixed with a drain port (12). The lower side of the interior of the purification cylinder (1) is horizontally fixed with a manifold box (13), and the drain pipe of the manifold box (13) is connected to and fixed with the drain port (12). The lower inner side of the cover cylinder (2) is uniformly and vertically assembled with multiple filter elements (4), and the bottom ends of the multiple filter elements (4) are connected and inserted into the top surface of the manifold box (13). The cover cylinder (2) is assembled at the top of the purification cylinder (1), and the support member (3) is connected and assembled at the bottom of the purification cylinder (1). The filter element (4) includes a mesh tube (41), the top of which is detachably assembled inside the lower side of the cover tube (2), and a cloth tube (42) is sleeved on the outside of the mesh tube (41), and a filter tube (43) is sleeved on the outside of the cloth tube (42).

2. A security filter according to claim 1, characterized in that: The bottom end of the mesh tube (41) is connected to and fixed with a screw ring (411), and a threaded insert (44) is threadedly connected to the screw ring (411), and a sealing gasket (45) is sleeved on the outside of the threaded insert (44).

3. A security filter according to claim 2, characterized in that: Multiple insert cylinders (14) are uniformly and vertically connected and fixed on the top surface of the junction box (13), and the insert cylinders (14) are inserted and fitted with threaded insert cylinders (44).

4. A security filter according to claim 1, characterized in that: Multiple guide tubes (21) are evenly and vertically fixed on the bottom surface of the cover tube (2), and magnetic blocks (22) are fixed inside the multiple guide tubes (21).

5. A security filter according to claim 4, characterized in that: The top of the network tube (41) is vertically fixed with a guide post (412), and the guide post (412) is inserted into the guide tube (21) for a limited position, and the top of the guide post (412) is magnetically connected to the magnetic block (22).

6. A security filter according to claim 1, characterized in that: The top of the purification cylinder (1) is horizontally fixed with a flange ring (18), and the flange ring (18) and the cover cylinder (2) are fixedly assembled by bolts. The lower side of the outer wall of the purification cylinder (1) is provided with an external thread (15).

7. A security filter according to claim 6, characterized in that: The support member (3) includes a support screw cylinder (31), which is assembled and connected to the external thread (15) of the purification cylinder (1). Multiple brackets (32) are vertically fixed on the outer wall of the support screw cylinder (31). A mesh (33) is horizontally fixed inside the support screw cylinder (31). A drain pipe (34) is connected and fixed at the bottom end of the support screw cylinder (31), and a valve is installed on the drain pipe (34).

8. A security filter according to claim 1, characterized in that: The outer wall of the purification cylinder (1) is horizontally fixed with a hole frame (16), and a hydraulic rod (17) is vertically fixed on the hole frame (16). A rod (23) is vertically fixed on the top surface of the cover cylinder (2), and the rod (23) is vertically slidably connected to the hole frame (16), and the rod (23) is fixedly connected to the output end of the hydraulic rod (17).

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