A double-mesh multi-cone separation pre-filter

Abstract

The application discloses a double-net multi-cone separation pre-filter, which comprises a filter bottle, a valve head connected to the upper end of the filter bottle, a water inlet arranged on one side of the valve head, a water outlet arranged on the other side of the valve head, a blowdown outlet arranged at the lower end of the filter bottle, a ball valve installed in the blowdown outlet, a water distributor, a framework, a filter screen, a separation mechanism, an inner framework and an inner filter screen installed in the filter bottle, wherein the separation mechanism comprises an inner pipe part and an outer pipe part, an inner water cavity is formed between the inner pipe part and the outer pipe part, a plurality of conical funnels are arranged between the inner pipe part and the outer pipe part, and a conical separation cavity is formed in the conical funnel. The double-net multi-cone separation pre-filter combines the filter screen with the multi-cone separator, and the three-filtering system is perfectly fused, so that the filtering effect is good, the flux is increased, the blowdown is clean and thorough, and the double-net multi-cone separation pre-filter can adapt to different water qualities in different environments.

Description

Technical Field

[0001] The invention belongs to the technical field of filters, and in particular relates to a double-net multi-cone separation pre-filter. Background Art

[0002] The traditional pre-filter simply uses the filter as the medium for filtration. The filtration method has poor sewage discharge effect, is prone to clogging, and is difficult to adapt to the water quality in different environments, affecting the service life and user experience.

[0003] With the continuous improvement of living standards, the rapid development of science and technology, and the emergence of many household water-using equipment, people have higher and higher requirements for water quality, and have installed pre-water purification equipment in household pipelines such as Shuijingfang or under the kitchen to ensure the back-end smart water-using equipment and water purification needs.

[0004] The existing double filtration system pre-filter is designed to have two filter screens in one filter bottle and installed on the inner and outer sides of the frame. When discharging sewage, the surface of the outer filter screen is flushed to achieve the effect of clean sewage discharge.

[0005] The existing dual-filtration system pre-filter has a limited gap between the filters. The longer the water is used, the more impurities accumulate between the two filters. It is difficult to drain them cleanly and is prone to blockage, resulting in reduced flux and reduced water output at the back end, affecting household water use and thus reducing the functional life of the entire machine. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a double-net multi-cone separation pre-filter, including a filter bottle, the upper end of the filter bottle is threadedly connected to a valve head, one side of the valve head is provided with a water inlet, and the other side is provided with a water outlet, the lower end of the filter bottle is provided with a sewage outlet, a ball valve is installed in the sewage outlet, a water divider, a skeleton, a filter screen and a separation mechanism are installed inside the filter bottle, the filter screen is surrounded by the skeleton, and a water inlet cavity is formed between the filter screen and the inner wall of the filter bottle, the separation mechanism is located inside the skeleton, a number of water holes are provided around the skeleton, a lower fixing ring is installed at the lower end of the skeleton, a water outlet pipe is provided at the upper end of the skeleton, a water distributor is sleeved on the water outlet pipe, the water outlet pipe is buckled with the water distributor, an annular support platform for supporting the water distributor is provided on the inner wall of the filter bottle, a number of connecting ports are provided on the water distributor, and the water inlet is connected to the inlet through the connecting port The water cavity, an inner water inlet cavity is formed between the separation mechanism and the frame, the separation mechanism includes an inner tube portion and an outer tube portion, an inner water cavity is formed between the inner tube portion and the outer tube portion, the water outlet pipe is connected to the interior of the outer tube portion, and a plurality of conical funnels are provided between the inner tube portion and the outer tube portion, a conical separation cavity is formed in the conical funnel, the upper end of the conical funnel is provided with a water outlet port connected to the interior of the inner tube portion, a water inlet hole is provided on one side of the conical funnel, and a water outlet hole is provided at the lower end of the conical funnel, the water outlet hole is connected to the inner water cavity, and the conical separation cavity is connected to the inner water inlet cavity through the water inlet hole, an inner frame is provided in the inner tube portion, an inner sleeve is provided at the upper end of the inner skeleton, the inner sleeve extends into the water outlet pipe and is sealed and connected to the water outlet pipe, an inner filter screen is wrapped around the inner skeleton, the aperture of the inner filter screen is smaller than the aperture of the filter screen, a plurality of water holes are provided on the inner skeleton, and the inner sleeve is connected to the water outlet.

[0007] As a preferred embodiment of the above technical solution, the separation mechanism is composed of several separators arranged in sequence, and the upper end of each separator is connected to an adapter. The separator includes an inner pipe section and an outer pipe section, and an inner water cavity unit is formed between the inner pipe section and the outer pipe section. All the inner water cavity units are connected in sequence to form an inner water cavity. Several conical funnels are provided between the inner pipe section and the outer pipe section, and all the inner pipe sections are connected to form an inner pipe part. Several funnel covers are provided on the adapter, and the funnel covers correspond to the conical funnels one by one. The funnel covers are covered on the corresponding conical funnels, and the water outlet ports are respectively located on the conical funnels. Several clips are respectively provided at the upper and lower ends of the outer pipe section, and adjacent separators are connected by several clip plates. The upper and lower ends of the clip plates are respectively provided with slots for the clips to be inserted. The top adapter is connected to a docking pipe through the clip plate, and the docking pipe is connected to the water outlet pipe.

[0008] As a preferred embodiment of the above technical solution, sealing gaskets are respectively provided between the separator and the adapter, between the adapter and the docking pipe, and between the separator and the lower fixing ring.

[0009] As a preferred embodiment of the above technical solution, the conical funnels on two adjacent separators are staggered with each other.

[0010] As a preferred embodiment of the above technical solution, a center column is fixedly connected to the middle of the lower fixed ring, a spring is sleeved on the center column, a baffle is threadedly connected to the upper end of the center column, and an inner boss is fixedly connected to the lower end of the inner tube section of the lowest separator, the center column passes through the inner boss and extends into the interior of the inner tube part, and the spring is clamped between the baffle and the inner boss.

[0011] As a preferred embodiment of the above technical solution, a plurality of spiral blades are fixedly connected to the water divider, and communication ports are formed between adjacent spiral blades.

[0012] As a preferred embodiment of the above technical solution, a pressure gauge is installed on the valve head, and the pressure gauge is used to detect the water pressure at the water outlet.

[0013] As a preferred embodiment of the above technical solution, the sewage outlet is provided with a seal, the upper end of the seal is located inside the filter bottle and has a diameter larger than the diameter of the sewage outlet, the lower end of the seal extends from the sewage outlet to the filter bottle and is threadedly connected to the ball valve, and the lower end of the seal is threadedly connected to a fixing part.

[0014] As a preferred embodiment of the above technical solution, the inner wall of the valve head is provided with a lead isolation layer.

[0015] As a preferred embodiment of the above technical solution, the upper end of the skeleton is buckled with an upper fixing ring, the lower end of the skeleton is threadedly connected to a lower locking ring, the upper end of the filter screen is clamped between the upper fixing ring and the skeleton, the upper end of the filter screen is clamped between the lower locking ring and the skeleton, the inner side of the lower locking ring is connected to a support ring, the lower end of the separation mechanism is placed on the support ring, and the four sides of the lower fixing ring are sealed with the inner wall of the filter bottle through a sealing ring.

[0016] The beneficial effects of the present invention are as follows: the double-mesh multi-cone separation pre-filter of the present invention breaks the conventional pure filter mesh filtering principle and is designed to combine the filter mesh with the multi-cone separator. The three filtering systems are perfectly integrated. The raw water enters from the water inlet and is first filtered through the filter mesh in the filter bottle cavity. The filtered water then flows into the interior of the multi-cone separator for a second separation filtration and water purification. It is then filtered through the inner filter mesh for a third time and finally discharged from the water outlet. The three filtering systems work together to achieve good filtering effects, increased flux, and clean and thorough sewage discharge, which can adapt to different environmental water qualities. When discharging sewage, the lower fixed ring of the sewage discharge is opened, and the separated impurities are discharged from the sewage discharge channel. All are finally discharged from the sewage outlet at the bottom end of the filter bottle. The valve head adopts lead isolation technology to avoid internal heavy metal precipitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the skeleton structure;

[0019] Figure 3 It is a structural diagram of the separation mechanism;

[0020] Figure 4 It is a structural diagram of the separator;

[0021] Figure 5 is a schematic diagram of the cross-sectional structure of the separator;

[0022] Figure 6 It is a structural diagram of the adapter;

[0023] Figure 7 1 is a schematic diagram of the structure of the lower fixing ring;

[0024] Figure 8 It is a structural diagram of the water distributor;

[0025] Figure 9 It is a schematic diagram of the structure of the internal skeleton;

[0026] Figure 10 This is a schematic diagram of water flow in the filtering state of the filter of the present invention;

[0027] Figure 11 Schematic diagram of water flow in the backwash and sewage discharge state of the filter of the present invention. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] like Figure 1-11 As shown, a double-net multi-cone separation pre-filter includes a filter bottle 14, the upper end of the filter bottle 14 is threadedly connected to a valve head 1, one side of the valve head 1 is provided with a water inlet 101, and the other side is provided with a water outlet 102, the lower end of the filter bottle 14 is provided with a sewage outlet 1401, and a ball valve 10 is installed in the sewage outlet 1401. A water separator 13, a skeleton 4, a filter screen 3 and a separation mechanism are installed inside the filter bottle 14. The filter screen 3 is surrounded by the skeleton 4, and a water inlet cavity 1420 is formed between the filter screen 3 and the inner wall of the filter bottle 14. The separation mechanism is located inside the skeleton 4. The frame 4 is provided with a plurality of water holes 403 around it, the lower end of the frame 4 is provided with a lower fixing ring 11, the upper end of the frame 4 is provided with a water outlet pipe 410, the water outlet pipe 410 is provided with a water divider 13, the water outlet pipe 410 is buckled with the water divider 13, the inner wall of the filter bottle 14 is provided with an annular support platform 1410 for supporting the water divider 13, the water divider 13 is provided with a plurality of communication ports 1310, the water inlet 101 is connected to the water inlet cavity 1420 through the communication port 1310, the lower end of the separation mechanism is placed on the lower fixing ring 11, and an inner layer is formed between the separation mechanism and the frame 4 The water inlet cavity 1430, the separation mechanism includes an inner tube portion 1440 and an outer tube portion, an inner water cavity 1431 is formed between the inner tube portion 1440 and the outer tube portion, a water outlet pipe 410 is connected to the interior of the outer tube portion, a plurality of conical funnels 510 are provided between the inner tube portion 1440 and the outer tube portion, a conical separation cavity 504 is formed in the conical funnel 510, a water outlet port 511 connected to the interior of the inner tube portion 1440 is provided at the upper end of the conical funnel 510, a water inlet hole 512 is provided on one side of the conical funnel 510, and a water outlet hole 513 is provided at the lower end of the conical funnel 510. The outlet hole 513 communicates with the inner water cavity 1431. The conical separation cavity 504 communicates with the inner water inlet cavity 1430 via the water inlet hole 512. The inner tube portion 1440 is provided with an inner frame 15. The upper end of the inner frame 15 is provided with an inner sleeve 1510, which extends into and is sealed with the outlet pipe 410. The inner frame 15 is surrounded by an inner filter 1520, the aperture of which is smaller than that of the filter 3. The inner frame 15 is provided with a plurality of water holes 403. The inner sleeve 1510 communicates with the water outlet 102. Water enters the water inlet cavity 1420 from the water inlet 101 and then passes through the filter 3 for the first filtration. The filtered water enters the inner water inlet chamber 1430, then enters the conical separation chamber 504 through the water inlet hole 512. There, it undergoes spiral separation, and impurities are separated to the bottom of the conical separation chamber 504. It is then discharged into the inner water chamber 1431 through the water outlet hole 513. The purified water flows out of the water outlet port 511, enters the interior of the inner tube 1440, and then passes through the inner filter 1520 for fine filtration. Finally, it passes through the inner sleeve 1510 and flows out of the water outlet 102. The inner frame 15 and the inner filter 1520 are fixedly connected by bonding or welding.

[0032] Furthermore, the separation mechanism is composed of a plurality of separators 5 arranged in sequence, the upper end of each separator 5 is connected to an adapter 6, the separator 5 includes an inner pipe section 520 and an outer pipe section 521, an inner water cavity unit is formed between the inner pipe section 520 and the outer pipe section 521, all the inner water cavity units are connected in sequence to form an inner water cavity 1431, a plurality of conical funnels 510 are provided between the inner pipe section 520 and the outer pipe section 521, all the inner pipe sections 520 are connected to form an inner pipe portion 1440, and a plurality of funnel covers 522 are provided on the adapter 6. The cover 522 corresponds to the conical funnel 510 one-to-one. The funnel cover 522 covers the corresponding conical funnel 510. The water outlet port 511 is located on the conical funnel 510. The upper and lower ends of the outer tube section 521 are respectively provided with a plurality of clips 523. Adjacent separators 5 are connected by a plurality of clip plates 524. The upper and lower ends of the clip plates 524 are respectively provided with a slot 525 for the clips 523 to snap into. The top adapter 6 is connected to a docking pipe 526 through the clip plate 524, and the docking pipe 526 is connected to the water outlet pipe 410. The separation mechanism can adjust the number of separators 5 as needed to ensure the flow rate. The conical funnel 510, the inner tube section 520, and the outer tube section 521 are integrally formed. The adapter 6 and the funnel cover 522 are integrally formed. The separation mechanism is composed of a plurality of separators 5 that are detachably connected, so that the separation mechanism can be removed and the interior can be cleaned and maintained after disassembly.

[0033] Furthermore, sealing gaskets 527 are respectively provided between the separator 5 and the adapter 6, between the adapter 6 and the butt joint 526, and between the separator 5 and the lower fixing ring 11. The sealing gaskets 527 ensure the sealing of each part of the separation mechanism.

[0034] Furthermore, the conical funnels 510 on two adjacent separators 5 are staggered. In this way, the conical separation chamber 504 of the conical funnel 510 plays a filtering role at each angle of the separation mechanism, thereby improving the filtering effect.

[0035] Furthermore, a central column 1110 is fixedly connected to the middle portion of the lower retaining ring 11. A spring 1111 is sleeved on the central column 1110. A baffle 1112 is threadedly connected to the upper end of the central column 1110. An inner boss 1113 is fixedly connected to the lower end of the inner tube section 520 of the lowermost separator 5. The central column 1110 extends through the inner boss 1113 into the interior of the inner tube section 1440. The spring 1111 is sandwiched between the baffle 1112 and the inner boss 1113. A drain hole 1450 is provided on the lower retaining ring 11, which communicates with the inner water chamber 1431. When the ball valve 10 remains closed, the water pressure on the upper and lower surfaces of the lower retaining ring 11 is stable. The elastic force of the spring 1111 keeps the lower retaining ring 11 covering the lower end of the separator mechanism, and the drain hole 1450 is blocked by the lower end of the separator mechanism. When ball valve 10 is opened, water beneath lower retaining ring 11 flows out due to gravity. The pressure difference between the upper and lower surfaces of lower retaining ring 11 increases, and the elastic force of spring 1111 is insufficient to hold lower retaining ring 11 in place. This causes lower retaining ring 11 to move downward a certain distance, allowing water in inner water chamber 1431 to flow out through drain hole 1450. This water flow quickly flushes the surface of filter screen 3, backwashing the filter. An annular groove is provided around lower retaining ring 11, and a sealing ring is installed.

[0036] Furthermore, a plurality of spiral blades 1301 are fixedly connected to the water divider 13, and communication ports 1310 are formed between adjacent spiral blades 1301. The spiral blades 1301 form a spiral turbulent flow when the water flows into the water inlet chamber 1420.

[0037] Furthermore, a pressure gauge 2 is mounted on the valve head 1 to detect the water pressure at the water outlet 102. Pressure gauge 2 allows real-time monitoring of the water pressure within the filter bottle 14. By comparing the water pressure reading on the front-end pressure gauge with the reading on pressure gauge 2, the filtering effectiveness of the filter screen 3 can be determined, thereby determining whether the ball valve 10 needs to be opened for drainage, or whether the filter screen 3 needs to be removed for cleaning, maintenance, or replacement.

[0038] Furthermore, the sewage outlet 1401 is provided with a sealing member 8. The upper end of the sealing member 8 is located inside the filter bottle 14 and has a diameter larger than that of the sewage outlet 1401. The lower end of the sealing member 8 extends from the sewage outlet 1401 into the filter bottle 14 and is threadedly connected to the ball valve 10. The lower end of the sealing member 8 is threadedly connected to the fixing member 9. Several sealing rings are provided between the sealing member 8 and the lower end of the filter bottle 14 to ensure a tight seal. The fixing member 9 is rotated so that the lower end of the filter bottle 14 is clamped between the fixing member 9 and the upper end of the sealing member 8.

[0039] Furthermore, a lead isolation layer is provided on the inner wall of the valve head 1. The lead isolation layer is injection molded to form an insert in the valve head 1 to prevent heavy metal precipitation.

[0040] Furthermore, the upper end of the skeleton 4 is fastened with an upper fixing ring 310, and the lower end of the skeleton 4 is threadedly connected with a lower locking ring 311. The upper end of the filter screen 3 is clamped between the upper fixing ring 310 and the skeleton 4, and the upper end of the filter screen 3 is clamped between the lower locking ring 311 and the skeleton 4. The inner side of the lower locking ring 311 is connected to a support ring 319. The lower end of the separation mechanism is placed on the support ring. The lower fixing ring 11 is sealed to the inner wall of the filter bottle 14 through a sealing ring. The filter screen 3 is fixed to the skeleton 4 by the upper fixing ring 310 and the lower locking ring 311. The filter screen 3 surrounds the skeleton 4. When discharging sewage, negative pressure is formed under the lower fixing ring 11, and the lower fixing ring 11 moves down a distance, so that the sewage in the inner water cavity 1431 can be discharged.

[0041] It is worth mentioning that the technical features such as the lead isolation layer and the filter screen involved in the patent application of the present invention should be regarded as the prior art. The specific structure, working principle and possible control method and spatial arrangement method of these technical features can be selected by conventional means in the field, and should not be regarded as the inventive point of the patent of the present invention. The patent of the present invention will not be further elaborated.

[0042] The above describes in detail the preferred specific embodiments of the present invention. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of existing technologies should be within the scope of protection determined by the claims.

Claims

1. A double-net multi-cone separation pre-filter, characterized in that: The invention comprises a filter bottle (14), the upper end of the filter bottle (14) is threadedly connected to a valve head (1), one side of the valve head (1) is provided with a water inlet (101), and the other side is provided with a water outlet (102), the lower end of the filter bottle (14) is provided with a sewage outlet (1401), a ball valve (10) is installed in the sewage outlet (1401), and a water separator (13), a frame (4), a filter screen (3) and a separation mechanism are installed inside the filter bottle (14), the filter screen (3) is surrounded by the frame (4), and a water inlet cavity (1420) is formed between the filter screen (3) and the inner wall of the filter bottle (14), the separation mechanism is located inside the frame (4), and the frame (4) is surrounded by a water separator (13), a filter screen (3) and a separation mechanism. A plurality of water holes (403) are provided, a lower fixing ring (11) is installed at the lower end of the frame (4), a water outlet pipe (410) is provided at the upper end of the frame (4), a water distributor (13) is sleeved on the water outlet pipe (410), the water outlet pipe (410) and the water distributor (13) are buckled, an annular support platform (1410) for supporting the water distributor (13) is provided on the inner wall of the filter bottle (14), a plurality of communication ports (1310) are provided on the water distributor (13), the water inlet (101) is connected to the water inlet cavity (1420) through the communication ports (1310), the water outlet pipe (410) is connected to the water outlet (102), and the separation mechanism and the frame (4) are connected. An inner water inlet cavity (1430) is formed, and the separation mechanism includes an inner tube portion (1440) and an outer tube portion, an inner water cavity (1431) is formed between the inner tube portion (1440) and the outer tube portion, a plurality of conical funnels (510) are provided between the inner tube portion (1440) and the outer tube portion, a conical separation cavity (504) is formed in the conical funnel (510), a water outlet port (511) communicating with the interior of the inner tube portion (1440) is provided at the upper end of the conical funnel (510), a water inlet hole (512) is provided on one side of the conical funnel (510), and a water outlet hole (513) is provided at the lower end of the conical funnel (510), and the water outlet hole (513) is connected to the inner tube portion (1440). The inner water cavity (1431) and the conical separation cavity (504) are connected to the inner water inlet cavity (1430) through the water inlet hole (512). The inner tube portion (1440) is provided with an inner skeleton (15). The upper end of the inner skeleton (15) is provided with an inner sleeve (1510). The inner sleeve (1510) extends into the water outlet pipe (410) and is sealed with the water outlet pipe (410). The inner skeleton (15) is wrapped with an inner filter (1520) on all sides. The aperture of the inner filter (1520) is smaller than the aperture of the filter (3). The inner skeleton (15) is provided with a plurality of water holes (403). The inner sleeve (1510) is connected to the water outlet (102).

2. The double-net multi-cone separation pre-filter according to claim 1, characterized in that: The separation mechanism is composed of a plurality of separators (5) arranged in sequence, the upper end of each separator (5) is connected to an adapter (6), the separator (5) includes an inner pipe section (520) and an outer pipe section (521), an inner water cavity unit is formed between the inner pipe section (520) and the outer pipe section (521), all the inner water cavity units are connected in sequence to form an inner water cavity (1431), a plurality of conical funnels (510) are provided between the inner pipe section (520) and the outer pipe section (521), all the inner pipe sections (520) are connected to form an inner pipe section (1440), the adapter (6) is provided with a plurality of funnel covers (522), the funnel covers (52 2) corresponding to the conical funnels (510) one by one, the funnel covers (522) are covered on the corresponding conical funnels (510), the water outlet ports (511) are respectively located on the conical funnels (510), the upper and lower ends of the outer tube sections (521) are respectively provided with a plurality of snap fasteners (523), the adjacent separators (5) are connected by a plurality of snap fastener plates (524), the upper and lower ends of the snap fastener plates (524) are respectively provided with slots (525) for the snap fasteners (523) to be snapped in, the uppermost adapter (6) is connected to a butt joint pipe (526) through the snap fastener plate (524), and the butt joint pipe (526) is connected to the water outlet pipe (410).

3. The double-net multi-cone separation pre-filter according to claim 2, characterized in that: Sealing gaskets (527) are respectively provided between the separator (5) and the adapter (6), between the adapter (6) and the butt joint (526), ​​and between the separator (5) and the lower fixing ring (11).

4. The double-net multi-cone separation pre-filter according to claim 3, characterized in that: The conical funnels (510) on two adjacent separators (5) are staggered.

5. The double-net multi-cone separation pre-filter according to claim 4, characterized in that: The middle part of the lower fixed ring (11) is fixedly connected to a center column (1110), a spring (1111) is sleeved on the center column (1110), the upper end of the center column (1110) is threadedly connected to a baffle (1112), the lower end of the inner tube section (520) of the lowest separator (5) is fixedly connected to an inner boss (1113), the center column (1110) passes through the inner boss (1113) and extends into the interior of the inner tube portion (1440), and the spring (1111) is clamped between the baffle (1112) and the inner boss (1113).

6. The double-net multi-cone separation pre-filter according to claim 1, characterized in that: A plurality of spiral blades (1301) are fixedly connected to the water distributor (13), and communication ports (1310) are formed between adjacent spiral blades (1301).

7. The double-net multi-cone separation pre-filter according to claim 1, characterized in that: A pressure gauge (2) is installed on the valve head (1), and the pressure gauge (2) is used to detect the water pressure at the water outlet (102).

8. The double-net multi-cone separation pre-filter according to claim 1, characterized in that: The sewage outlet (1401) is provided with a sealing member (8), the upper end of the sealing member (8) is located inside the filter bottle (14) and has a diameter greater than the diameter of the sewage outlet (1401), the lower end of the sealing member (8) extends from the sewage outlet (1401) to the filter bottle (14) and is threadedly connected to the ball valve (10), and the lower end of the sealing member (8) is threadedly connected to a fixing member (9).

9. The double-net multi-cone separation pre-filter according to claim 1, characterized in that: The inner wall of the valve head (1) is provided with a lead isolation layer.

10. The double-net multi-cone separation pre-filter according to claim 1, characterized in that: The upper end of the frame (4) is buckled with an upper fixing ring (310), the lower end of the frame (4) is threadedly connected with a lower locking ring (311), the upper end of the filter (3) is clamped between the upper fixing ring (310) and the frame (4), the upper end of the filter (3) is clamped between the lower locking ring (311) and the frame (4), the inner side of the lower locking ring (311) is connected with a support ring (319), the lower end of the separation mechanism is placed on the support ring, and the four sides of the lower fixing ring (11) are sealed with the inner wall of the filter bottle (14) through a sealing ring.

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