Liquid filtration device and method

Abstract

The present invention discloses a liquid filtering device and method, comprising a main body which sequentially includes a housing, a first filter cylinder, a second filter cylinder and an inner cylinder from outside to inside. The first filter cylinder is provided with first guide vanes and also filter mesh holes. A first liquid cyclone separation chamber is formed between the housing and the first filter cylinder, an acceleration channel is formed between the first filter cylinder and the second filter cylinder, and a second liquid cyclone separation chamber is formed between the second filter cylinder and the inner cylinder. The housing is provided with a water outlet and a water inlet, and the liquid in the device is filtered multiple times under the action of centrifugal force. The liquid filtering device and method obtained by the present invention have the following advantages: good filtering effect, not easily blocked and capable of self-cleaning.

Description

Technical Field

[0001] The present invention relates to a liquid filtering device and method. Background Art

[0002] In the prior art, in water purification technology, a pre-filter is generally provided on the water inlet pipeline to filter solid particle impurities in water. This type of pre-filter directly filters through a filter net, intercepting solid particles directly in front of the filter net. This filtering device has a simple structure and is convenient to install. The characteristic is that after the particle impurities accumulate in front of the filter net, the water inlet resistance increases, and it is easy to block the water inlet pipeline. If the sand on the filter net needs to be removed, the water inlet pipeline needs to be disassembled and the filter net needs to be removed for cleaning. Moreover, this filtering device only simply filters large particle impurities, and the filtering effect is average. Summary of the Invention

[0003] The purpose of the present invention is to provide a liquid filtering device with good filtering effect, not easily blocked, and capable of self-cleaning to solve the above-mentioned technical deficiencies.

[0004] To achieve the above purpose, a liquid filtering device provided by the present invention includes a main body, which sequentially includes a housing, a first filter cylinder, a second filter cylinder, and an inner cylinder from outside to inside. The first filter cylinder is provided with first guide vanes and also filter net holes. A first liquid cyclone separation chamber is formed between the housing and the first filter cylinder, an acceleration channel is formed between the first filter cylinder and the second filter cylinder, a second liquid cyclone separation chamber is formed between the second filter cylinder and the inner cylinder, and the housing is provided with a water outlet and a water inlet.

[0005] To increase the liquid swirling speed, the inner cylinder is provided with second guide vanes.

[0006] To improve the impurity collection effect, a dust collection cylinder is provided at the bottom of the first filter cylinder.

[0007] To improve the fixing effect, a raised first fixing ring is provided at the bottom of the housing, and the first fixing ring cooperates with the lower end of the dust collection cylinder for fixation.

[0008] To increase the liquid swirling speed and the impurity collection effect, the second filter cylinder is provided with third guide vanes. The housing includes a top cover and an outer shell. A water separation ring is further provided inside the top cover, and a partition plate is provided outside the dust collection cylinder.

[0009] To improve the fixing effect, a second fixing ring is provided at the bottom of the outer shell, and a clamping groove cooperating with the second fixing ring is provided at the bottom of the partition plate.

[0010] To improve the filtering effect, the cross-sectional area of the upper end of the second filter cylinder gradually decreases towards the lower end.

[0011] To increase the swirling speed, the first guide vanes and the second guide vanes have the same swirling direction, and the third guide vanes have a swirling direction opposite to that of the first guide vanes.

[0012] To improve the filtration efficiency, the number of the second filter cartridges includes one or more, and cylindrical lower ends with the same number as the second filter cartridges are provided on the inner cylinder.

[0013] To isolate each filtration unit into an independent filtration system and improve the filtration effect, the number of the second filter cartridges is greater than one, the center of the first filter cartridge bulges upward, and the second filter cartridges are distributed around the center.

[0014] To improve the filtration effect, one or more enhanced filtration components are sequentially provided between the second filter cartridge and the inner cylinder from outside to inside.

[0015] To improve the filtration effect, the enhanced filtration component includes an enhanced filter cylinder and a diversion cylinder. The enhanced filter cylinder is arranged inside the diversion cylinder. The top of the diversion cylinder is connected to the inner cylinder. An inner channel is formed between the diversion cylinder and the enhanced filter cylinder. The bottom of the enhanced filter cylinder is closed to form an impurity accommodation place, and an enhanced liquid swirl separation cavity is formed inside the enhanced filter cylinder.

[0016] To increase the liquid swirl speed, enhanced diversion vanes are provided on the diversion cylinder, and swirl - enhancing diversion vanes are provided on the enhanced filter cylinder.

[0017] The present invention also provides a liquid filtration method, which includes two - stage filtration. The liquid is subjected to swirl - enhancement and then undergoes the first - stage filtration. In the first - stage filtration, impurities in the high - speed rotating liquid move outward under the action of centrifugal force. The liquid after the first - stage filtration flows toward the center along a one - way channel through a filter screen. The liquid undergoes swirl - enhancement in the one - way channel and then enters the second - stage filtration, and the filtered liquid flows out along the one - way channel.

[0018] The present invention also provides a liquid filtration method, and the steps are as follows:

[0019] The first step: The liquid flows in from the water inlet and undergoes the first filtration in the first liquid swirl separation cavity. Impurities in the high - speed rotating liquid are separated under the action of centrifugal force. The filtered liquid enters the acceleration channel through the filter screen holes.

[0020] The second step: The liquid enters the second liquid swirl separation cavity for the second filtration after being accelerated and rotated in the acceleration channel. The liquid undergoes swirl - enhancement and rotates at a high speed, and the remaining impurities are separated under the action of centrifugal force. The filtered liquid is discharged through the water outlet.

[0021] To improve the filtration efficiency, the second filtration in the second step is carried out simultaneously in areas with the same number as the second filter cartridges.

[0022] To improve the filtration effect, after the second filtration in the second step, further filtration is carried out through the enhanced filtration component.

[0023] A liquid filtering device and method obtained by the present invention have the following advantages: good filtering effect, high efficiency, not easily blocked, and capable of self-cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0025] Figure 2 is a schematic structural diagram of Embodiment 2 of the present invention;

[0026] Figure 3 is a schematic structural diagram of Embodiment 3 of the present invention;

[0027] Figure 4 is a sectional view of the inner cylinder of Embodiment 3 of the present invention;

[0028] Figure 5 is a schematic structural diagram of Embodiment 4 of the present invention.

[0029] In the figure: main body 1, housing 2, first filter cylinder 3, second filter cylinder 4, inner cylinder 5, first guide vane 6, filter mesh holes 7, first liquid cyclone separation chamber 8, acceleration channel 9, second liquid cyclone separation chamber 10, water outlet 11, water inlet 12, second guide vane 13, dust collection cylinder 14, first fixing ring 15, third guide vane 16, top cover 17, outer shell 18, water separation ring 19, partition plate 20, second fixing ring 21, card slot 23, lower end 24, protrusion 25, enhanced filtration assembly 26, enhanced filter cylinder 27, guide cylinder 28, inner channel 29, accommodation place 30, enhanced liquid cyclone separation chamber 31, enhanced guide vane 32, swirl guide vane 33. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to more clearly understand the technical solution of the present invention, the present invention will be further illustrated by examples in combination with the accompanying drawings below.

[0031] Embodiment 1:

[0032] A liquid filtering device provided in this embodiment, as Figure 1 shown, includes a main body 1, and the main body 1 sequentially includes a housing 2, a first filter cylinder 3, a second filter cylinder 4, and an inner cylinder 5 from outside to inside. The first filter cylinder 3 is provided with a first guide vane 6, and the first filter cylinder 3 is also provided with filter mesh holes 7. A first liquid cyclone separation chamber 8 is formed between the housing 2 and the first filter cylinder 3, an acceleration channel 9 is formed between the first filter cylinder 3 and the second filter cylinder 4, a second liquid cyclone separation chamber 10 is formed between the second filter cylinder 4 and the inner cylinder 5, and a water outlet 11 and a water inlet 12 are provided on the housing 2.

[0033] With the above design, during use, liquid enters from the water inlet 12, and after the translational kinetic energy is converted into rotational kinetic energy by the first guide vane 6, it enters the first liquid cyclone separation chamber 8. Sediment or impurities with a larger mass in the liquid are separated under the action of centrifugal force, and the separated impurities sink to the bottom of the housing 2. The liquid after filtering the impurities enters the first filter cylinder 3 through the filter mesh holes 7. The high-speed rotating liquid flow can carry away the impurities on the filter mesh holes 7 to prevent the impurities from blocking. Since there is only an acceleration channel 9 between the first filter cylinder 3 and the second filter cylinder 4, the liquid can only flow upward through the acceleration channel 9 under the action of the inlet flow pressure, and flows in from the upper end and enters the second liquid cyclone separation chamber 10. In the second liquid cyclone separation chamber 10, minute impurities or dust are separated under the action of centrifugal force, and the separated impurities sink to the bottom of the housing 2. The impurities at the bottom of the housing 2 are trapped by the high pressure generated by the high-speed rotating liquid and will not be mixed into the upper liquid again. The liquid after filtering the impurities passes through the inner cylinder 5 and finally flows out through the water outlet 11.

[0034] Through the high-speed flow and rotation of the liquid, the device can be effectively self-cleaning, does not require frequent cleaning, the flow channel will not be blocked by impurities, and will not cause a sharp decrease in the liquid flow rate and pressure after flowing through the device.

[0035] Embodiment 2:

[0036] A liquid filtering device provided in this embodiment, in order to increase the rotation speed, as Figure 2 shown, in addition to the features described in Embodiment 1, a second guide vane 13 is provided on the inner cylinder 5.

[0037] In order to improve the impurity collection effect, a dust collection cylinder 14 is provided at the bottom of the first filter cylinder 3.

[0038] In order to improve the fixing effect, a raised first fixing ring 15 is provided at the bottom of the housing 2, and the first fixing ring 15 is fixedly fitted with the lower end of the dust collection cylinder 14.

[0039] In order to increase the liquid rotation speed and the impurity collection effect, a third guide vane 16 is provided on the second filter cylinder 4. The housing 2 includes a top cover 17 and an outer shell 18. A water separation ring 19 is further provided inside the top cover 17, and a partition plate 20 is provided outside the dust collection cylinder 14.

[0040] In order to improve the fixing effect, a second fixing ring 21 is provided at the bottom of the outer shell 18, and a clamping groove 23 matching with the second fixing ring 21 is provided at the bottom of the partition plate 20.

[0041] In order to improve the filtering effect, the cross-sectional area of the upper end of the second filter cylinder 4 gradually decreases towards the lower end.

[0042] In order to increase the rotation speed, the first guide vane 6 and the second guide vane 13 have the same rotation direction, and the third guide vane 16 has a rotation direction opposite to that of the first guide vane 6.

[0043] Through the above design, the second guide vanes 13 on the inner cylinder 5 can further accelerate the rotation of the liquid, obtaining a better filtration effect. The dust collecting cylinder 14 at the bottom of the first filter cylinder 3 can centrally collect tiny impurities. The first fixing ring 15 is fixedly fitted with the lower end of the dust collecting cylinder 14, making the fixed installation of the dust collecting cylinder 14 and the housing 2 more accurate and convenient, and the fixation more firm. The third guide vanes 16 can further accelerate the rotation of the liquid, enabling the liquid entering the second liquid cyclone separation chamber 10 to have a higher rotation speed. The water separation ring 19 of the top cover 17 can make the entering liquid flow only downward into the first liquid cyclone separation chamber 8. The partition plate 20 outside the dust collecting cylinder 14 can prevent impurities from rotating along with the water flow, generating collision noises and wearing the outer shell 18, and also strengthens the strength of the first filter cylinder 3. The cooperation between the second fixing ring 21 and the card slot 23 makes the fixation more firm. The cross-sectional area of the upper end of the second filter cylinder 4 gradually decreases towards the lower end, which is more conducive to the rotation of the liquid, further separating impurities from the liquid, and the cross-sectional area of the lower end is conducive to the centralized collection of impurities. The first guide vanes 6 and the second guide vanes 13 have the same rotation direction, and the third guide vanes 16 have the opposite rotation direction to the first guide vanes 6, making the swirling direction of the liquid in the main body 1 the same swirling direction, further increasing the rotation speed and preventing mutual cancellation due to opposite swirling directions.

[0044] Embodiment 3:

[0045] A liquid filtration device provided in this embodiment, in order to improve the filtration efficiency, as Figure 3 , Figure 4 shown, in addition to the features described in Embodiment 2, the number of the second filter cylinders 4 includes one or more, and the inner cylinder 5 is provided with cylindrical lower ends 24 having the same number as the second filter cylinders 4. In this embodiment, there are 6 second filter cylinders 4.

[0046] In order to isolate each filtration unit into an independent filtration system and improve the filtration effect, a convex portion 25 protrudes upward from the center of the first filter cylinder 3, and the second filter cylinders 4 are distributed around the center.

[0047] Through the above design, the liquid can flow into each second filter cylinder 4 from the upper end of the first filter cylinder 3 and flow upward from the cylindrical lower ends 24 inside each second filter cylinder 4, improving the filtration efficiency; the convex portion 25 in the center of the first filter cylinder 3 isolates each filtration unit into an independent filtration system, which can effectively reduce mutual interference and inhibit the mutual cancellation of rotational kinetic energy. The second filter cylinders 4 are distributed around the center, which can reduce mutual interference and improve the filtration effect.

[0048] Embodiment 4:

[0049] A liquid filtration device provided in this embodiment, in order to improve the filtration effect, as Figure 5As shown, except for the features described in Embodiment 2, between the second filter cartridge 4 and the inner cylinder 5, there are one or more enhanced filter components 26 arranged in sequence from outside to inside. In this embodiment, there is 1 enhanced filter component 26.

[0050] To improve the filtering effect, the enhanced filter component 26 includes an enhanced filter cylinder 27 and a diversion cylinder 28. The enhanced filter cylinder 27 is arranged inside the diversion cylinder 28. The top of the diversion cylinder 28 is connected to the inner cylinder 5. An inner channel 29 is formed between the diversion cylinder 28 and the enhanced filter cylinder 27. The bottom of the enhanced filter cylinder 27 is closed to form an impurity accommodation area 30, and an enhanced liquid swirl separation chamber 31 is formed inside the enhanced filter cylinder 27.

[0051] To increase the liquid swirl speed, the diversion cylinder 28 is provided with enhanced diversion vanes 32, and the enhanced filter cylinder 27 is provided with swirl-enhancing diversion vanes 33.

[0052] Through the above design, after the liquid is separated in the second liquid swirl separation chamber 10, it can also enter the enhanced filter component 26 for further filtration. There is only the inner channel 29 between the diversion cylinder 28 and the enhanced filter cylinder 27. The liquid filtered by the second liquid swirl separation chamber 10 can only flow upward from the bottom of the diversion cylinder 28, pass through the inner channel 29, and enter the enhanced liquid swirl separation chamber 31 from the upper end of the enhanced filter cylinder 27 for further impurity separation. The accommodation area 30 at the bottom of the enhanced filter cylinder 27 can centrally collect impurities, facilitating subsequent cleaning. The enhanced diversion vanes 32 and the swirl-enhancing diversion vanes 33 can further increase the liquid swirl speed, making it more conducive to the separation of impurities in the enhanced liquid swirl separation chamber 31.

[0053] Embodiment 5:

[0054] A liquid filtering method provided in this embodiment includes two-stage filtering. The liquid is swirled and then subjected to the first-stage filtering. In the first-stage filtering, the impurities in the high-speed rotating liquid move outward under the action of centrifugal force. The liquid after the first-stage filtering flows along the one-way channel towards the center through the filter mesh. The liquid is swirled in the one-way channel and then enters the second-stage filtering, and the filtered liquid flows out along the one-way channel.

[0055] Through the above method, by adopting two-stage filtering, the filtering effect is better. The liquid is swirled before filtering to ensure the filtering effect of each stage of filtering, facilitating the removal of impurities in the liquid through multi-stage filtering. The filter mesh can filter out large-particle impurities and prevent large-particle impurities from blocking the one-way channel.

[0056] Embodiment 6:

[0057] A liquid filtering method provided in this embodiment adopts the liquid filtering device in Embodiment 1, and its steps are as follows:

[0058] The first step: The liquid flows in from the water inlet 12 and undergoes the first filtration in the first liquid cyclone separation chamber 8. The impurities in the high-speed rotating liquid are separated under the centrifugal force. The filtered liquid enters the acceleration channel 9 through the filter mesh holes 7;

[0059] The second step: After being accelerated and rotated in the acceleration channel 9, the liquid enters the second liquid cyclone separation chamber 10 for the second filtration. The liquid is accelerated to a high-speed rotating state, and the remaining impurities are separated under the centrifugal force. The filtered liquid is discharged through the water outlet 11.

[0060] Through the above method, in the first step, the high-speed rotating liquid undergoes the first filtration in the first liquid cyclone separation chamber 8. The impurities are driven by the centrifugal force to be close to the outer wall, and under the drive of the downward rotating liquid and their own gravity, they sink to the bottom. In general filtration, the filter mesh holes 7 will intercept larger impurities, and the larger impurities will block the filter mesh holes 7 under the push of the liquid. However, the liquid rotating at a high speed around the filter mesh holes 7 will cause the impurities blocking the filter mesh holes 7 to move away from the filter mesh holes 7 under the centrifugal force and finally sink to the bottom, playing a certain role in self-cleaning; in the second step, the speed of the liquid after the first filtration will decrease, affecting the filtration effect. By accelerating through the acceleration channel 9, the liquid can still maintain a high-speed rotating state when entering the second liquid cyclone separation chamber 10 for the second filtration, improving the filtration effect.

[0061] Example 7:

[0062] A liquid filtration method provided in this example. In order to improve the filtration efficiency, in addition to the features described in Example 6, the second filtration in the second step is carried out simultaneously in the same number of regions as the second filter cylinder 4.

[0063] Through the above method, the liquid can undergo the second filtration simultaneously in multiple second filter cylinders 4.

[0064] Example 8:

[0065] A liquid filtration method provided in this example uses the liquid filtration device in Example 4. In order to improve the filtration effect, combined with the method steps of Example 6, after the second filtration in the second step, it is further filtered through the enhanced filtration component 26.

[0066] Through the above method, according to the actual filtration requirements, after the liquid undergoes the second filtration, it can be further filtered by the enhanced filtration component 26 to obtain a liquid with fewer impurities.

Claims

1. A liquid filtering device, comprising a main body (1), characterized in that the main body (1) sequentially includes a housing (2), a first filter cylinder (3), a second filter cylinder (4) and an inner cylinder (5) from outside to inside. A first guide vane (6) is provided on the first filter cylinder (3), and a filter mesh hole (7) is also provided on the first filter cylinder (3). A first liquid cyclone separation chamber (8) is formed between the housing (2) and the first filter cylinder (3); the cross-sectional area of the upper end of the second filter cylinder (4) gradually decreases towards the lower end. An acceleration channel (9) is formed between the first filter cylinder (3) and the second filter cylinder (4), and a second liquid cyclone separation chamber (10) is formed between the second filter cylinder (4) and the inner cylinder (5). A water outlet (11) and a water inlet (12) are provided on the housing (2). Liquid enters from the water inlet (12), and after the translational kinetic energy is converted into rotational kinetic energy by the first guide vane (6), it enters the first liquid cyclone separation chamber (8). Impurities in the liquid are separated under the action of centrifugal force. The liquid enters the first filter cylinder (3) through the filter mesh hole (7). Since there is only the acceleration channel (9) between the first filter cylinder (3) and the second filter cylinder (4), the liquid can only flow upward through the acceleration channel (9) under the action of the inlet flow pressure, and flows into the second liquid cyclone separation chamber (10) from the upper end. In the second liquid cyclone separation chamber (10), minute impurities or dust are separated under the action of centrifugal force, and then the liquid passes through the inner cylinder (5) and finally flows out through the water outlet (11); a second guide vane (13) is provided on the inner cylinder (5); a dust collecting cylinder (14) is provided at the bottom of the first filter cylinder (3); a convex first fixing ring (15) is provided at the bottom of the housing (2), and the lower end of the first fixing ring (15) is cooperatively fixed with the dust collecting cylinder (14); a third guide vane (16) is provided on the second filter cylinder (4). The housing (2) includes a top cover (17) and an outer shell (18). A water separation ring (19) is further provided inside the top cover (17). The water separation ring (19) of the top cover (17) can make the entering liquid only flow downward into the first liquid cyclone separation chamber (8). A partition plate (20) is provided outside the dust collecting cylinder (14); a second fixing ring (21) is provided at the bottom of the outer shell (18), and a clamping groove (23) matched with the second fixing ring (21) is provided at the bottom of the partition plate (20); the first guide vane (6) and the second guide vane (13) have the same spiral direction, and the third guide vane (16) has a spiral direction opposite to that of the first guide vane (6), so that the liquid has the same spiral direction when adding rotation in the main body (1).

2. A liquid filtering device according to claim 1, characterized in that: the number of the second filter cylinders (4) includes one or more, and the inner cylinder (5) is provided with cylindrical lower ends (24) having the same number as the second filter cylinders (4).

3. A liquid filtering device according to claim 1, characterized in that: the number of the second filter cylinders (4) is greater than one, the center of the first filter cylinder (3) bulges upward (25), and the second filter cylinders (4) are distributed around the center.

4. A liquid filtering device according to claim 1 or 2 or 3, characterized in that: One or more reinforcing filter components (26) are sequentially provided from outside to inside between the second filter cartridge (4) and the inner cylinder (5).

5. A liquid filtering device according to claim 4, wherein: The reinforcing filter component (26) includes a reinforcing filter cylinder (27) and a guide cylinder (28). The reinforcing filter cylinder (27) is arranged inside the guide cylinder (28). The top of the guide cylinder (28) is connected to the inner cylinder (5). An inner channel (29) is formed between the guide cylinder (28) and the reinforcing filter cylinder (27). The bottom of the reinforcing filter cylinder (27) is closed to form an impurity accommodating place (30). A reinforcing liquid swirl separation cavity (31) is formed inside the reinforcing filter cylinder (27).

6. A liquid filtering device according to claim 5, wherein: Reinforcing guide vanes (32) are provided on the guide cylinder (28), and swirl guide vanes (33) are provided on the reinforcing filter cylinder (27).

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