KM tube backwash filter

Abstract

The utility model discloses a kind of KM multi-tube backwash filter, it is related to liquid filtering equipment technical field.It includes support, filter assembly and control box, filter assembly is connected with control box on support, filter assembly contains two groups of blowdown main, feed main, discharge main and several filter units, filter unit is equipped on blowdown main, feed and discharge main are located between filter unit and communicate.Filter unit contains equipment cavity, fluid valve group, sealed exhaust component, filter core component and differential pressure controller, differential pressure controller is connected across feed and discharge main.Working, raw material is into filter unit through feed main, unit filter core blocks impurity, clear liquid is discharged by discharge main;When differential pressure or timing triggers backwash, control box controls unit backwashing blowdown gradually, the rest unit normal filtration.This device realizes continuous online filtration, and filtration precision is high, and maintenance cost is low, and it is suitable for multi-industry liquid filtration demand.

Description

Technical Field

[0001] This utility model relates to the field of liquid filtration equipment technology, specifically a KM tubular backwash filter. Background Technology

[0002] In industrial production, liquid filtration is a crucial step in ensuring continuous production and protecting critical equipment.

[0003] Conventional filters, designed to meet the demands of high flow rates and uninterrupted production, are typically used in parallel with two or more units. However, these filters require disassembly and replacement of filter elements or removal for cleaning, which is time-consuming and labor-intensive, severely impacting processing efficiency and preventing automated continuous operation. Furthermore, traditional filters often use bag-type or cartridge-type filter media, requiring frequent replacement and resulting in high consumable costs. Self-cleaning filters with simple structures face high labor and cleaning costs, as well as significant product loss, significantly increasing operating costs throughout the production cycle. Therefore, those skilled in the art have proposed a KM tubular backwash filter to address the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a KM tubular backwash filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A KM tubular backwash filter includes a support frame, a filter assembly, and a control box. The filter assembly and control box are connected to the support frame. The filter assembly includes a main drain pipe, a main feed pipe, a main discharge pipe, and several sets of filter units. Two sets of main drain pipes are fixedly connected to the top surface of the support frame. Each set of main drain pipes has several sets of filter units. The main feed pipe and the main discharge pipe are located between the filter units on both sides and are connected to the filter units. The filter units achieve liquid purification by blocking impurities in the raw material medium through filter elements. Under the control of the control box, the filter unit can perform pulse-type backwashing and drainage independently, while ensuring normal filtration of other units to achieve continuous online operation of the equipment.

[0007] As a further embodiment of this utility model: the filtration unit includes an equipment cavity, a drain branch pipe, a feed branch pipe, a discharge branch pipe, a drain valve, a feed valve, and a discharge valve. The top surface of the main drain pipe is connected to several sets of evenly distributed drain branch pipes. The top surface of the drain branch pipes is connected to the equipment cavity. The opposite sides of the two equipment cavities are connected to feed branch pipes and discharge branch pipes. The other ends of the feed branch pipes and discharge branch pipes are respectively connected to the feed main pipe and the discharge main pipe. A drain valve is provided on the drain branch pipe, a feed valve is provided on the feed branch pipe, and a discharge valve is provided on the discharge branch pipe. The feed branch pipe is located on the lower side of the equipment cavity, and the discharge branch pipe is located on the upper side of the equipment cavity.

[0008] As a further improvement of this utility model, the filter unit also includes a top cover, a locking bolt, and an exhaust valve. The top cover is sealed to the equipment cavity by the locking bolt, and the exhaust valve is provided on the top cover.

[0009] As a further embodiment of this utility model, the filter unit also includes a filter element handle, a unit filter element, a filter element frame, and a limiting post. The limiting post is fixedly connected to the lower side of the inside of the device cavity, and the filter element frame is fixedly connected to the limiting post. The unit filter element is provided on the filter element frame, and the filter element handle is fixedly connected to the upper end of the filter element frame.

[0010] As a further improvement of this utility model, the filtration unit also includes a differential pressure controller, which is connected across the filter's inlet manifold and outlet manifold.

[0011] Compared with existing technologies, the advantages of this invention are as follows: This device can achieve continuous online operation, adopts a multi-unit integrated design, and while a single filter unit is backwashed, the remaining units continue normal filtration without shutdown, significantly improving production efficiency. The unit filter element has a wedge-shaped filament structure with uniform filtration gaps, effectively removing fibers, colloids, and large particulate impurities, protecting downstream critical equipment, and is easy to clean and reusable, saving the cost of frequent consumable replacements; the optimized fixing and support structure reduces the risk of filter element damage and extends service life. This device adopts pulse-type backwashing technology, using the pressure of the filtered liquid itself for rinsing, consuming less cleaning fluid and reducing water consumption; the number of filter units can be flexibly combined within the range of 3-40, with even-numbered units arranged symmetrically, making reasonable use of space and meeting the filtration needs of different industries and different flow rates; it also supports automatic and manual control modes, allowing selection of timed rinsing, differential pressure triggered rinsing, or manual single-unit rinsing according to working conditions, ensuring stable and reliable operation. Attached Figure Description

[0012] Figure 1 This is a front view of a KM tubular backwash filter.

[0013] Figure 2 This is a side view of a KM tubular backwash filter.

[0014] Figure 3 This is a cross-sectional view of a KM tubular backwash filter.

[0015] Figure 4 In a KM tubular backwash filter Figure 1 Enlarged view of part A.

[0016] In the diagram: 1. Support frame; 2. Filter assembly; 21. Main drain pipe; 22. Main feed pipe; 23. Main discharge pipe; 24. Filter unit; 2401. Equipment cavity; 2402. Branch drain pipe; 2403. Branch feed pipe; 2404. Branch discharge pipe; 2405. Drain valve; 2406. Feed valve; 2407. Discharge valve; 2408. Top cover; 2409. Locking bolt; 2410. Exhaust valve; 2411. Filter element handle; 2412. Unit filter element; 2413. Filter element frame; 2414. Limiting post; 2415. Differential pressure controller; 25. Control box. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1-4 A KM tubular backwash filter includes a support frame 1, a filter assembly 2, and a control box 25. The filter assembly 2 and the control box 25 are connected to the support frame 1. The filter assembly 2 includes a main drain pipe 21, a main feed pipe 22, a main discharge pipe 23, and several sets of filter units 24. The main drain pipe 21 has two sets and is fixedly connected to the top surface of the support frame 1. Each set of main drain pipe 21 has several sets of filter units 24. The main feed pipe 22 and the main discharge pipe 23 are located between the filter units 24 on both sides and are connected to the filter units 24. The filter units 24 achieve liquid purification by blocking impurities in the raw material medium through filter elements. Under the control of the control box 25, they can perform pulse backwashing and sewage discharge independently, while ensuring normal filtration of other units to achieve continuous online operation of the equipment.

[0022] The filter unit 24 also includes a differential pressure controller 2415, which is connected across the filter’s feed manifold 22 and discharge manifold 23.

[0023] The filter unit 24 is integrated, and 3-40 filter units 24 can be integrated, featuring an ultra-large filtration area and ultra-large flow rate; the even-numbered units are symmetrically arranged, making efficient use of space. The control box 25 supports setting the time for timed cleaning according to the needs of the filtration process, as well as setting the time for pulse backwashing and sewage discharge of each filter element, which can be set within the range of 0-999 hours; when the differential pressure controller 2415 reaches the preset differential pressure value, it can start the backwashing and sewage discharge of the units between modules. It is recommended that the backwashing differential pressure be 150 kPa, which can be adjusted within the range of 50-300 kPa according to the operating conditions; it integrates the parallel control function of differential pressure backwashing and sewage discharge and timed backwashing and sewage discharge, and implements the principle of priority control.

[0024] The filtration unit 24 includes a device cavity 2401, a drain branch pipe 2402, a feed branch pipe 2403, a discharge branch pipe 2404, a drain valve 2405, a feed valve 2406, and a discharge valve 2407. The top surface of the main drain pipe 21 is connected to several evenly distributed drain branch pipes 2402. The top surface of the drain branch pipes 2402 is connected to the device cavity 2401. Each side of the two device cavities 2401 is connected to a feed branch pipe 2403 and a discharge valve 2407. The other ends of the feed branch pipe 2404, feed branch pipe 2403, and discharge branch pipe 2404 are connected to the feed main pipe 22 and the discharge main pipe 23, respectively. A drain valve 2405 is installed on the drain branch pipe 2402, a feed valve 2406 is installed on the feed branch pipe 2403, and a discharge valve 2407 is installed on the discharge branch pipe 2404. The feed branch pipe 2403 is located on the lower side of the equipment cavity 2401, and the discharge branch pipe 2404 is located on the upper side of the equipment cavity 2401.

[0025] The filter unit 24 also includes an upper cover 2408, a locking bolt 2409, and an exhaust valve 2410. The upper cover 2408 is sealed to the equipment cavity 2401 by the locking bolt 2409, and the exhaust valve 2410 is provided on the upper cover 2408.

[0026] The filter unit 24 also includes a filter element handle 2411, a unit filter element 2412, a filter element frame 2413, and a limiting post 2414. The limiting post 2414 is fixedly connected to the lower side inside the device cavity 2401. The filter element frame 2413 is fixedly connected to the limiting post 2414. The unit filter element 2412 is provided on the filter element frame 2413. The filter element handle 2411 is fixedly connected to the upper end of the filter element frame 2413.

[0027] When the machine is stopped, all valves of the filter assembly 2 (drain valve 2405, feed valve 2406, discharge valve 2407) are closed, the control box 25 is in standby mode, and there is no fluid flow in the equipment.

[0028] In the filtration state, the operator starts the filtration program through the control box 25. The control box 25 sends a signal to the feed valve 2406 and discharge valve 2407 of each filtration unit 24 to open them synchronously, while the drain valve 2405 remains closed. The liquid raw material to be filtered (such as circulating water and condensate) is diverted to each feed branch pipe 2403 through the feed main pipe 22 and enters the equipment cavity 2401 through the feed valve 2406. The raw material comes into contact with the unit filter element 2412 inside the equipment cavity 2401 (the unit filter element 2412 has a wedge-shaped filament structure with uniform filtration gaps and a maximum precision of microns, which can effectively remove fibers, colloids and large particulate impurities, and protect downstream key equipment). The outer surface of the unit filter element 2412 blocks fibers, colloids and large particulate impurities in the raw material. The purified liquid flows out from inside the unit filter element 2412. The purified liquid enters the discharge branch pipe 2404 through the discharge valve 2407 and finally flows into the discharge main pipe 23, which is then transported to the purified liquid container or downstream equipment. During the filtration process, if there is air inside the equipment cavity 2401, it can be discharged by opening the exhaust valve 2410 on the top cover 2408 to avoid affecting the filtration efficiency.

[0029] In automatic backwashing mode, when the differential pressure controller 2415 detects that the differential pressure between the feed main pipe 22 and the discharge main pipe 23 reaches a preset value (adjustable within the range of 50-300 kPa, 150 kPa recommended), or reaches the preset timer time (adjustable within 0-999 hours) of the control box 25, the backwashing program is triggered. The time and differential pressure control take priority. The control box 25 drives the solenoid valve group, first closing the feed valve 2406 of the first filter unit 24 to be cleaned, keeping the discharge valve 2407 open, and opening the drain valve 2405. Using the pressure of the filtered liquid itself, the filter element 2412 is backwashed from the inside out, flushing away the impurities accumulated on its outer surface. At the bottom of the equipment cavity 2401, impurities are discharged into the main drain pipe 21 via the drain branch pipe 2402 and the drain valve 2405. After a single filter unit 24 has been flushed for a preset time, the control box 25 closes its drain valve 2405 and reopens the feed valve 2406, restoring the unit to the filtration state. The system then automatically switches to the next filter unit 24 and repeats the above flushing process until all filter units 24 have completed one backwash, forming a flushing cycle. If the differential pressure controller 2415 detects that the differential pressure has not returned to normal after one round of backwashing, the system automatically starts the second round of backwashing. If the differential pressure still exists after two rounds of flushing, the control box 25 triggers an alarm, prompting the operator to perform a manual inspection.

[0030] When the equipment experiences a power outage or requires targeted maintenance, the operator can use the manual control module of the control box 25 to individually select any filter unit 24 for backwashing. After activating the backwash button of the target unit, the control box 25 sends a signal to close the feed valve 2406 of that unit, open the drain valve 2405, and keep the discharge valve 2407 open for directional flushing. After flushing is completed, pressing the stop button will cause the control box 25 to close the drain valve 2405 and open the feed valve 2406, allowing the unit to resume filtration. During manual flushing, the other units are unaffected and continue to maintain normal filtration operations.

[0031] When the unit filter element 2412 is damaged or severely clogged, it can be disassembled for maintenance: unscrew the locking bolt 2409 of the top cover 2408, open the top cover 2408, and take out the unit filter element 2412 and the filter element frame 2413 together by holding the filter element handle 2411. Replace or deep clean and then reinstall and reset. The maintenance process is simple and convenient.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A KM tube backwash filter characterized by, The system includes a support frame, a filter assembly, and a control box. The filter assembly and control box are connected to the support frame. The filter assembly includes a main drain pipe, a main feed pipe, a main discharge pipe, and several sets of filter units. There are two sets of main drain pipes, which are fixedly connected to the top surface of the support frame. Each set of main drain pipes has several sets of filter units. The main feed pipe and the main discharge pipe are located between the filter units on both sides and are connected to the filter units. The filter units achieve liquid purification by blocking impurities in the raw material medium through filter elements. Under the control of the control box, they can perform pulse backwashing and sewage discharge independently, while ensuring normal filtration of other units to achieve continuous online operation of the equipment.

2. The KM tubular backflush filter according to claim 1, characterized in that, The filtration unit includes an equipment cavity, a drain branch pipe, a feed branch pipe, a discharge branch pipe, a drain valve, a feed valve, and a discharge valve. The top surface of the main drain pipe is connected to several evenly distributed drain branch pipes, and the top surface of the drain branch pipes is connected to the equipment cavity. The feed branch pipe and the discharge branch pipe are connected to opposite sides of the two equipment cavities. The other ends of the feed branch pipe and the discharge branch pipe are connected to the feed main pipe and the discharge main pipe, respectively. A drain valve is installed on the drain branch pipe, a feed valve is installed on the feed branch pipe, and a discharge valve is installed on the discharge branch pipe. The feed branch pipe is located on the lower side of the equipment cavity, and the discharge branch pipe is located on the upper side of the equipment cavity.

3. The KM tubular backwash filter according to claim 1, characterized in that, The filter unit also includes a top cover, locking bolts, and an exhaust valve. The top cover is sealed to the equipment cavity by the locking bolts, and the exhaust valve is provided on the top cover.

4. The KM tubular backwash filter according to claim 2, characterized in that, The filtration unit also includes a filter element handle, a unit filter element, a filter element frame, and a limiting post. The limiting post is fixedly connected to the lower side of the inside of the device cavity. The filter element frame is fixedly connected to the limiting post. The unit filter element is provided on the filter element frame. The filter element handle is fixedly connected to the upper end of the filter element frame.

5. The KM tubular backwash filter according to claim 1, characterized in that, The filtration unit also includes a differential pressure controller, which is connected across the filter's inlet manifold and outlet manifold.

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