Filtering device for water inlet pipeline of desalted water tank

Abstract

The utility model relates to the technical field of chemical production equipment, in particular to a filtering device for a water inlet pipeline of a desalted water tank. The filtering device for the water inlet pipeline of the desalted water tank comprises a water storage tank, wherein a plurality of supporting legs are mounted at the bottom of the water storage tank; one end of the liquid inlet bent pipe is communicated with the top of the water storage tank, the other end of the liquid inlet bent pipe is communicated with a water outlet valve, the other end of the water outlet valve is communicated with a filter cartridge, a filter assembly is embedded in the filter cartridge, and a water inlet valve is installed on the upper portion of the filter cartridge, communicated with the filter cartridge and connected with a liquid inlet pipe; a blow-down valve is mounted at the lower part of the filter cartridge, which is positioned on the filter assembly, is communicated with the filter cartridge and is connected with a blow-down pipe; the liquid discharging pipe is installed on one side of the bottom end of the water storage tank, a control valve is embedded in the liquid discharging pipe, and the water reversing assembly is installed in the water storage tank. The filtering device for the water inlet pipeline of the desalted water tank has the advantages of being capable of carrying out backwashing quickly, simple in structure, convenient to install and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to a filtering device for a water inlet pipeline of a desalted water tank. Background Art

[0002] In chemical production, the main purpose of the desalination station is to desalinate process water, remove macromolecular polymers and dissolved salts in the water, and prevent the dissolved salts in the water from scaling and affecting the heat transfer effect. The desalted water produced by the desalination station is generally stored in a desalted water tank and pumped to supply subsequent industrial boilers, industrial waste boilers and other equipment. The mixed bed is generally used as the last process of the desalination station. It uses anionic and cationic resins to filter water and further remove ions in the water. Generally, the conductivity of the produced water is required to be less than 0.2μs / cm.

[0003] However, in actual production operation, due to long-term operation, the mixed bed resin is easily broken and the pipeline is rusted. The broken resin, rust and other impurities enter the desalted water tank, which has a certain impact on the subsequent system. In severe cases, the water pump inlet pipeline is blocked and the water supply is insufficient, which will cause the entire system to stop. In the prior art, for desalted water filtration, the filter screen needs to be regularly disassembled for cleaning or replacement. For example, a desalted water bypass filtration device for steelmaking disclosed in publication number CN219502167U includes a filter with a filter screen between the water inlet and the water outlet of the water supply pipeline or the return water pipeline, and the filter is provided with a front manual valve on the pipeline at the water inlet end. The filter is A rear manual valve is provided on the pipe at one end of the water outlet, and the front manual valve, the filter and the rear manual valve are connected in parallel with a bypass valve between the water inlet and the water outlet of the water supply pipe or the return pipe, thereby solving the problem of water quality being affected by lining fragments and floating garbage clogging the pipe in the existing water treatment pipe of desalted water for steelmaking; however, it is worth noting that: during use, although a bypass is provided in this solution, the filter still needs to be disassembled and cleaned, and the entire desalted water filtering equipment does not have self-cleaning ability, which affects the normal filtering operation of the overall equipment.

[0004] Therefore, it is necessary to provide a new filtering device for the water inlet pipe of the desalted water tank to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a filtering device for a water inlet pipe of a desalted water tank which can quickly perform backwashing, has a simple structure, is convenient to install and is easy to operate.

[0006] The utility model provides a filtering device for a water inlet pipe of a desalted water tank, comprising: a water storage tank, a plurality of supporting legs being installed at the bottom of the water storage tank;

[0007] A liquid inlet elbow, one end of which is in communication with the top of the water storage tank, and the other end of which is in communication with a water outlet valve, the other end of which is in communication with a filter cartridge, a filter assembly is embedded in the filter cartridge, and a water inlet valve is installed on the upper part of the filter cartridge located at the filter assembly, the water inlet valve is in communication with the filter cartridge and connected to a liquid inlet pipe, a sewage valve is installed on the lower part of the filter cartridge located at the filter assembly, the sewage valve is in communication with the filter cartridge and connected to a sewage pipe;

[0008] A drain pipe is installed at one side of the bottom end of the water tank, and a control valve is embedded in the drain pipe.

[0009] The reverse water component is installed in the water tank, and the reverse water component includes an electric telescopic rod, and multiple electric telescopic rods are fixedly installed at the bottom of the water tank, and the telescopic ends of the multiple electric telescopic rods extend into the water tank and are jointly installed with a sealing plate, the outer wall of the sealing plate is slidably matched with the inner wall of the water tank, and the outer wall of the sealing plate is provided with a groove, and a sealing ring is embedded in the groove.

[0010] Preferably, the outer side wall of the filter cartridge is provided with a through hole, and a transparent sight glass is embedded in the through hole.

[0011] Preferably, the filter assembly includes a filter element, a threaded joint is welded at the front end of the filter element, the threaded joint is threadedly connected to the front end of the inner cavity of the filter cartridge, and the diameter of the filter element is equal to the diameter of the liquid inlet elbow.

[0012] Preferably, the filter assembly also includes a sealing end cover, which is threadedly installed in a threaded hole opened at one end of the filter cartridge, and a driving motor is fixedly installed on the end of the sealing end cover facing the outside of the filter cartridge, the output shaft of the driving motor extends into the filter cartridge and is coaxially fixed with a connecting rod, and the driving motor is electrically connected to the control box, a cross plate is installed on the connecting rod, and mounting plates are installed on the four corner ends of the cross plate facing the end of the filter element, and a cleaning brush is installed on the end of the mounting plate facing the outer wall of the filter element.

[0013] Preferably, the outer side wall of the cross plate is slidably matched with the inner side wall of the filter cartridge.

[0014] Preferably, the control box is electrically connected to the water outlet valve, the water inlet valve, the sewage valve and the actuator of the control valve.

[0015] Preferably, the electric telescopic rod is electrically connected to a control box, and the control box is installed on the outer side wall of the water tank.

[0016] Compared with the related art, the filtering device for the water inlet pipe of the desalted water tank provided by the utility model has the following beneficial effects:

[0017] 1. The utility model provides a filtering device for the water inlet pipe of a desalted water tank, wherein a liquid inlet elbow is arranged on one side of the top of the water tank, and then the liquid inlet elbow is connected to a filter cartridge through a water outlet valve, a filter assembly is arranged in the filter cartridge, and the filter cartridge is connected to a liquid inlet pipe and a sewage discharge pipe through a water inlet valve and a sewage discharge valve, and then the electric telescopic rod, sealing plate and sealing ring of the reverse water assembly in the water tank are cooperated, and when the water inlet valve and the control valve are closed and the sewage discharge valve is opened, the desalted water in the water tank can be flushed out from the liquid inlet elbow, and then the filter assembly in the filter cartridge is backwashed, so that impurities such as broken resin and rust filtered and intercepted by the filter assembly can be backwashed, and the overall structure is simple and easy to operate;

[0018] 2. The filter assembly uses the filter element, threaded joint, sealing end cover, drive motor, connecting rod, cross plate, mounting plate and cleaning brush to further brush the filter element used to intercept impurities such as broken resin and rust while backwashing, thereby improving the backwashing effect and facilitating better filtering and interception. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of a preferred embodiment of a filtering device for a water inlet pipe of a desalted water tank provided by the utility model;

[0020] Figure 2 A schematic diagram of the internal structure of a filtering device for a water inlet pipe of a desalted water tank provided by the utility model;

[0021] Figure 3 A schematic diagram of the connection structure of the filter cartridge provided by the utility model;

[0022] Figure 4 An exploded view of the filter cartridge and filter element assembly provided by the utility model.

[0023] Numbers in the figure: 1. Water storage tank; 11. Support leg; 2. Liquid inlet elbow; 21. Water outlet valve; 3. Filter cartridge; 31. Water inlet valve; 32. Drain valve; 33. Transparent sight glass; 301. Through hole; 4. Liquid inlet pipe; 5. Filter assembly; 51. Filter element; 511. Threaded joint; 52. Sealing end cover; 53. Drive motor; 54. Connecting rod; 55. Cross plate; 56. Mounting plate; 57. Cleaning brush; 6. Drain pipe; 7. Liquid drain pipe; 71. Control valve; 8. Backflow assembly; 81. Electric telescopic rod; 82. Sealing plate; 83. Sealing ring; 9. Control box. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0026] See also Figures 1 to 4 The present invention provides a filtering device for a water inlet pipe of a desalted water tank, and the filtering device for a water inlet pipe of a desalted water tank comprises:

[0027] A water tank 1, a plurality of supporting legs 11 are installed at the bottom of the water tank 1;

[0028] A liquid inlet elbow 2, one end of which is connected to the top of the water storage tank 1, and the other end of which is connected to a water outlet valve 21, and the other end of which is connected to a filter cartridge 3, a filter assembly 5 is embedded in the filter cartridge 3, and a water inlet valve 31 is installed on the upper part of the filter cartridge 3 located at the filter assembly 5, the water inlet valve 31 is connected to the filter cartridge 3, and is connected to a liquid inlet pipe 4, and a sewage valve 32 is installed on the lower part of the filter cartridge 3 located at the filter assembly 5, the sewage valve 32 is connected to the filter cartridge 3, and is connected to a sewage pipe 6;

[0029] The drain pipe 7 is installed at one side of the bottom end of the water storage tank 1, and a control valve 71 is embedded in the drain pipe 7.

[0030] The reverse water component 8 is installed in the water tank 1, and the reverse water component 8 includes an electric telescopic rod 81. Multiple electric telescopic rods 81 are fixedly installed at the bottom of the water tank 1, and the telescopic ends of the multiple electric telescopic rods 81 extend into the water tank 1 and are jointly installed with a sealing plate 82. The outer wall of the sealing plate 82 is slidably matched with the inner wall of the water tank 1, and the outer wall of the sealing plate 82 is provided with a groove, and a sealing ring 83 is embedded in the groove. The multiple electric telescopic rods 81 are electrically connected to a control box 9, and the control box 9 is installed on the outer wall of the water tank 1.

[0031] The control box 9 is electrically connected to the actuators of the water outlet valve 21 , the water inlet valve 31 , the sewage valve 32 and the control valve 71 .

[0032] It should be noted that when desalted water is used for filtration, the liquid inlet pipe 4 is connected to the water inlet pipe, and then the drain valve 32 is closed through the control box 9, and the water inlet valve 31 and the water outlet valve 21 are opened. Then, the desalted water is filtered through the filter assembly 5 in the filter cartridge 3, and flows into the water storage tank 1 through the liquid inlet elbow 2. When it is needed, the control valve 71 is started to discharge it from the drain pipe 7. At this time, the sealing plate 82 of the backwater assembly 8 is located below the drain pipe 7.

[0033] When backwashing is required, the water inlet valve 31 and the control valve 71 are closed, and then the sewage valve 32 is opened. The impurities in the filter assembly 5 of the filter cartridge 3 can be backwashed into the ditch by utilizing the height difference of the liquid level inside the water storage tank 1. The backwashing lasts for 3 to 5 minutes. When there are no obvious impurities in the sewage, the sewage valve 32 is closed, the water inlet valve 31 is opened, and the backwashing operation is finished.

[0034] Taking into account the efficiency of backwashing, a more preferred solution of the utility model is: by controlling the start-up of multiple electric telescopic rods 81, active cleaning is achieved, that is, the sealing plate 82 is pushed to move upward along the inner wall of the water tank 1, and then the sealing ring 83 is used to complete the sealing of the sealing plate 82 and the inner wall of the water tank 1, so that the liquid in the water tank 1 flows out through the liquid inlet elbow 2, and the filter component 5 in the filter cartridge 3 is forcibly backwashed, so that the broken resin, rust and other impurities intercepted by the filter component 5 are discharged from the drain valve 32 and the drain pipe 6 until the backwashing is completed, and then the drain valve 32 is closed and the water inlet valve 31 is opened, and the electric telescopic rod 81 is controlled to reset, and a new round of desalination filtration can be carried out.

[0035] It should also be noted that: in order to better perform backwashing and sewage discharge, the sewage valve 32 is installed at the front end of the filter cartridge 3, which is convenient for flushing out impurities such as broken resin and rust from the filter assembly 5 and the filter cartridge 3. The sewage pipe 6 adopts a stainless steel pipe, and the sewage valve 32 adopts a stainless steel ball valve, which is convenient for smoothly discharging impurities such as broken resin and rust.

[0036] The control box 9 is embedded with an existing industrial controller microcontroller or a PLC logic controller. After being electrically connected to the actuators of the outlet valve 21, the inlet valve 31, the drain valve 32 and the control valve 71, the opening and closing of the corresponding valves can be controlled by the control buttons on the control box 9. The control technology is all existing technology, and the working principle will not be described in detail here.

[0037] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 and Figure 4 The outer wall of the filter cartridge 3 is provided with a through hole 301, and a transparent sight glass 33 is embedded in the through hole 301. In this way, when the observer observes through the transparent sight glass 33 that the filter assembly 5 in the filter cartridge 3 intercepts a large amount of impurities, the control box 9 controls the opening and closing of the reverse water assembly 8 and the related valves to perform backwashing and self-cleaning of the filter element 51.

[0038] In the present embodiment, the transparent sight glass 33 is a glass sight glass, the diameter of which is adapted according to the diameter of the filter cartridge 3, and the transparent sight glass 33 faces outward, so that personnel can observe the operation of the filter conveniently.

[0039] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 and Figure 4 The filter assembly 5 includes a filter element 51, a threaded joint 511 is welded at the front end of the filter element 51, the threaded joint 511 is threadedly connected to the front end of the inner cavity of the filter cartridge 3, and the diameter of the filter element 51 is equal to the diameter of the liquid inlet elbow 2;

[0040] The filter assembly 5 also includes a sealing end cover 52, which is threadedly installed in a threaded hole opened at one end of the filter cartridge 3, and a driving motor 53 is fixedly installed on the end of the sealing end cover 52 facing the outside of the filter cartridge 3. The output shaft of the driving motor 53 extends into the filter cartridge 3 and is coaxially fixed with a connecting rod 54, and the driving motor 53 is electrically connected to the control box 9. A cross plate 55 is installed on the connecting rod 54, and mounting plates 56 are installed on the four corner ends of the cross plate 55 facing the end of the filter element 51, and a cleaning brush 57 is installed on the end of the mounting plate 56 facing the outer wall of the filter element 51.

[0041] The outer wall of the cross plate 55 is slidably matched with the inner wall of the filter cartridge 3 .

[0042] When the filter assembly 5 is in use, the filter element 51 is installed on the filter cartridge 3 through the threaded joint 511, which is convenient for later disassembly and replacement. Then, after the incoming water is filtered by the filter element 51, it flows into the water storage tank 1 from the liquid inlet elbow 2 to filter and intercept impurities such as broken resin and rust. Then, during backwashing, water flows from the liquid inlet elbow 2 to the filter cartridge 3, and the impurities intercepted by the outer wall of the filter element 51 are backflushed into the drain pipe 6 for discharge. At the same time, during further backwashing, the drive motor 53 is started, and the drive motor 53 drives the cross plate 55 to rotate through the connecting rod 54. When the cross plate 55 rotates, the cleaning brush 57 is driven by the mounting plate 56 to brush the outer wall surface of the filter element 51, thereby making the backwashing of the filter element 51 more thorough and efficient.

[0043] In this embodiment, in order to ensure the filtering effect, the filtering accuracy of the filter element 51 is 3-5 μm.

[0044] Taking the above preferred forced backwashing as an example, the working principle of the filtering device for the water inlet pipe of the desalted water tank provided by the utility model is as follows:

[0045] When using desalted water for filtration, connect the liquid inlet pipe 4 to the water inlet pipe, then close the drain valve 32 through the control box 9, open the water inlet valve 31 and the water outlet valve 21, and then the desalted water is filtered through the filter assembly 5 in the filter cartridge 3, and flows into the water storage tank 1 through the liquid inlet elbow 2. When it is needed, start the control valve 71 to discharge it from the drain pipe 7. At this time, the sealing plate 82 of the backwater assembly 8 is located below the drain pipe 7;

[0046] When the observer observes through the transparent viewing mirror 33 that the filter assembly 5 in the filter cartridge 3 has intercepted a large amount of impurities, backwashing is performed:

[0047] First, the water inlet valve 31 and the control valve 71 are controlled to be closed, and then the drain valve 32 is opened, and then the multiple electric telescopic rods 81 are controlled to start, and the sealing plate 82 is pushed to move upward along the inner wall of the water tank 1. Subsequently, the sealing ring 83 is used to complete the sealing between the sealing plate 82 and the inner wall of the water tank 1, and the liquid in the water tank 1 flows out through the liquid inlet elbow 2, and the filter assembly 5 in the filter cartridge 3 is backwashed, so that the impurities such as broken resin and rust intercepted by the filter assembly 5 are discharged from the drain valve 32 and the drain pipe 6 until the backwashing is completed. Finally, the drain valve 32 is closed and the water inlet valve 31 is opened, and the electric telescopic rod 81 is controlled to reset, and a new round of desalination filtration can be carried out.

[0048] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0049] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A filtering device for a water inlet pipe of a desalted water tank, comprising: A water tank (1), wherein a plurality of supporting legs (11) are installed at the bottom of the water tank (1); It is characterized by further comprising: a liquid inlet elbow (2), one end of the liquid inlet elbow (2) being in communication with the top of the water storage tank (1), and the other end of the liquid inlet elbow (2) being in communication with a water outlet valve (21), the other end of the water outlet valve (21) being in communication with a filter cartridge (3), the filter cartridge (3) being embedded with a filter assembly (5), and a water inlet valve (31) being installed at the upper portion of the filter cartridge (3) located on the filter assembly (5), the water inlet valve (31) being in communication with the filter cartridge (3) and connected to a liquid inlet pipe (4), and a sewage discharge valve (32) being installed at the lower portion of the filter cartridge (3) located on the filter assembly (5), the sewage discharge valve (32) being in communication with the filter cartridge (3) and connected to a sewage discharge pipe (6); A liquid discharge pipe (7) is installed on one side of the bottom end of the water storage tank (1), and a control valve (71) is embedded in the liquid discharge pipe (7). A backflow assembly (8) is installed in the water storage tank (1), and the backflow assembly (8) includes an electric telescopic rod (81), a plurality of the electric telescopic rods (81) are fixedly installed on the bottom of the water storage tank (1), and the telescopic ends of the plurality of electric telescopic rods (81) extend into the water storage tank (1) and are jointly installed with a sealing plate (82), the outer wall of the sealing plate (82) is slidably matched with the inner wall of the water storage tank (1), and the outer wall of the sealing plate (82) is provided with a groove, and a sealing ring (83) is embedded in the groove.

2. The filtering device for the water inlet pipe of the desalted water tank according to claim 1, characterized in that: A through hole (301) is provided on the outer wall of the filter cartridge (3), and a transparent sight glass (33) is embedded in the through hole (301).

3. The filtering device for the water inlet pipe of the desalted water tank according to claim 1 or 2, characterized in that: The filter assembly (5) comprises a filter element (51), a threaded joint (511) being welded at the front end of the filter element (51), the threaded joint (511) being threadedly connected to the front end of the inner cavity of the filter cartridge (3), and the diameter of the filter element (51) is equal to the diameter of the liquid inlet elbow (2).

4. The filtering device for the water inlet pipe of the desalted water tank according to claim 3 is characterized in that: The filter assembly (5) further comprises a sealing end cover (52), the sealing end cover (52) being threadedly mounted in a threaded hole provided at one end of the filter cartridge (3), and a driving motor (53) being fixedly mounted on the end of the sealing end cover (52) facing the outside of the filter cartridge (3), the output shaft of the driving motor (53) extending into the filter cartridge (3) and being coaxially fixedly mounted with a connecting rod (54), and the driving motor (53) being electrically connected to a control box (9), a cross plate (55) being mounted on the connecting rod (54), four corner ends of the cross plate (55) being mounted with mounting plates (56) at one end facing the filter element (51), and a cleaning brush (57) being mounted on one end of the mounting plate (56) facing the outer wall of the filter element (51).

5. The filtering device for the water inlet pipe of the desalted water tank according to claim 4, characterized in that: The outer side wall of the cross plate (55) is slidably matched with the inner side wall of the filter cartridge (3).

6. The filtering device for the water inlet pipe of the desalted water tank according to claim 4, characterized in that: The control box (9) is electrically connected to the actuators of the water outlet valve (21), the water inlet valve (31), the sewage discharge valve (32) and the control valve (71).

7. The filtering device for the water inlet pipe of the desalted water tank according to claim 1 or 2, characterized in that: The electric telescopic rod (81) is electrically connected to a control box (9), and the control box (9) is mounted on the outer side wall of the water storage tank (1).

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