Water-driven ball valve-free pre-filter

Abstract

The application discloses a water-driven ball valve-free pre-filter, which comprises a valve head used for connecting pipelines, an embedded part made of lead isolation material arranged in the valve head and used for preventing water flow from contacting the inner wall of the valve head, a filter bottle in sealed communication with the valve head, a filter assembly arranged in the filter bottle, a first through hole arranged in the bottom of the filter bottle, a rotating part in rotary sealing with the first through hole, the rotating part comprising a rotating body provided with a second through hole and a spiral rib arranged on the rotating body, the second through hole being in communication with the inside of the filter bottle, the spiral rib being arranged in the filter bottle and gradually changing in height in the axial direction, and a transmission part comprising a transmission body moving in the axial direction and a sealing part arranged at the first end of the transmission body in the axial direction, the transmission body being in abutment with the spiral rib in the axial direction, the sealing part being in position correspondence with the second through hole in the axial direction and used for sealing or opening the second through hole. The application realizes the switching of the sewage discharge and the filtering state by cooperation of the rotating part and the transmission part, and reduces the risk of water leakage.

Description

Technical Field

[0001] This application relates to the field of pre-filter technology, and in particular to a water-driven ball valve-free pre-filter. Background Technology

[0002] The city's water supply pipelines are old and long. Rust, silt and other impurities in the pipelines can cause water-using equipment to malfunction. Therefore, pre-filters are usually installed on the inlet pipes to improve the water quality and ensure the water supply to downstream users.

[0003] A pre-filter is the first coarse filtration device for the entire house's water supply. It can filter out sediment, rust, and large particles from tap water, preventing the large amounts of sediment and impurities generated in urban and residential water supply networks from causing harm to the human body. It also plays a positive pre-protective role for concealed pipes, faucets, plumbing, water heaters, boilers, central air conditioning, washing machines, dishwashers, coffee machines, and other water appliances (water purifiers, reverse osmosis systems, water softeners). Current pre-filters use a ball valve discharge design, which cannot completely prevent the leaching of heavy metal ions during use. Furthermore, ball valves are expensive to manufacture and require precise installation; improper installation can lead to leaks later on. Utility Model Content

[0004] The purpose of this application is to provide a water-driven pre-filter without a ball valve, which eliminates the ball valve structure and uses rotating and transmission components to switch between sewage discharge and filtration states, reducing the risk of water leakage, saving costs, and avoiding the problem of heavy metal leaching from the source by not using metal materials.

[0005] To achieve the above objectives, this application provides a water-driven, ball-valve-free pre-filter, comprising:

[0006] A valve head, used to connect to a pipeline, has an internal lead-resistant insert.

[0007] A filter bottle is sealed and connected to the valve head. The filter bottle contains a filter assembly, and a first through hole is provided at the bottom of the filter bottle.

[0008] A rotating component is rotaryly sealed with the first through hole. The rotating component includes a rotating body with a second through hole and a spiral rib on the rotating body. The second through hole communicates with the inside of the filter bottle. The spiral rib is located inside the filter bottle and its height gradually changes in the axial direction.

[0009] The transmission component includes a transmission body that moves axially and a sealing element disposed at the first axial end of the transmission body. The transmission body abuts against the spiral rib in the axial direction, and the sealing element corresponds to the second through hole in the axial direction and is used to seal or open the second through hole.

[0010] Preferably, the filter assembly is fixedly disposed inside the filter bottle, and the transmission body is limited to the filter assembly to constrain the transmission body to move only along the axial direction.

[0011] Preferably, the filter assembly includes an inner frame, the inner frame is provided with a limiting sleeve along the axial direction, the limiting sleeve is provided with a limiting hole at the top, the second axial end of the transmission body is provided with a limiting post, the limiting post is provided in the limiting hole and slides axially relative to the limiting hole, and the limiting hole and the limiting post are mutually limiting interference in the circumferential direction.

[0012] Preferably, the transmission body is provided with an annular rib, which is used to slide and seal the gap between the transmission body and the limiting sleeve. A spring is sleeved on the outer periphery of the transmission body, with one end of the spring abutting against the upper surface of the annular rib and the other end abutting against the inner wall of the top of the limiting sleeve, for providing elastic force to the transmission body or the sealing element to move towards the second through hole.

[0013] Preferably, there are two spiral ribs, which are centrally symmetrical. The first axial end of the transmission body is also provided with a radially extending rib. The rib abuts against the two spiral ribs at the upper limit in the axial direction. The rotating spiral rib is used to push the rib to move axially.

[0014] Preferably, the outer periphery of the inner frame is hollowed out, a filter screen is provided on the outer periphery of the inner frame, the interior of the inner frame is hollow, one end of the limiting sleeve extends into the inner frame, and the other end extends out of the bottom outside of the inner frame, and the upper and lower ends of the inner frame are sealed with the filter screen.

[0015] Preferably, the insert includes an inner cylinder and an outer cylinder, the upper ends of the inner cylinder and the outer cylinder are closed and connected, and the lower ends are open. A raw water cavity is formed between the inner cylinder and the outer cylinder, and a clean water cavity is formed inside the inner cylinder.

[0016] The outer cylinder has a first connecting hole that connects the valve head inlet and the raw water chamber; the inner cylinder has a second connecting hole that connects the purified water chamber and the valve head outlet.

[0017] The raw water chamber is distributed around the outer periphery of the inner cylinder, thereby forming a downward-flowing annular water flow. The upper end of the inner frame is sealed to the inner cylinder so that the interior of the inner frame is connected to the purified water chamber.

[0018] Preferably, the annular water flow flows into the annular space between the inner frame and the filter bottle. A water distributor is provided in the annular space. The water distributor is sleeved on the upper outer periphery of the inner frame. The outer ring of the water distributor is locked to the inner wall of the filter bottle, and the inner ring of the water distributor is locked to the upper part of the inner frame, so that the water distributor and the inner frame are fixed relative to the filter bottle. A number of water-dividing blades are distributed between the inner ring and the outer ring. After the water flows through the water-dividing blades, it enters the annular space.

[0019] Preferably, the annular space is further provided with a rotating scraping assembly. The scraping assembly is located below the water distributor and is sleeved on the outer periphery of the inner frame. The outer periphery of the scraping assembly is hollowed out, and the hollowed-out position of the scraping assembly corresponds to the hollowed-out position of the inner frame. The scraping assembly is provided with scrapable filter screens and scraper strips for the inner wall of the filter bottle.

[0020] Preferably, the bottom of the scraping assembly is provided with a third through hole, which is fitted into the outer periphery of the limiting sleeve on the outer side of the bottom of the inner frame. The outer periphery of the limiting sleeve on the outer side of the bottom of the inner frame is provided with an annular groove, and a pressure cap is fastened in the annular groove. The upper surface of the pressure cap abuts against the bottom surface of the scraping assembly to support the scraping assembly.

[0021] The top of the scraping assembly is provided with a plurality of turbine blades along the circumferential direction. The turbine blades are located in the annular space so that the water flow acts on the turbine blades and drives the scraping assembly to rotate.

[0022] Compared to the aforementioned background technology, this application, by setting an embedded part inside the valve head, can prevent water flow from directly contacting the inner wall of the valve head, thus avoiding the problem of heavy metal leaching at the source. The filter component inside the filter bottle has a filtering function. When filtration is required, the sealing element seals with the second through hole, and the source water enters from one end of the valve head, is filtered by the filter component, and the clean water reaches the inside of the filter component, and is then transported to the water-using end from the other end of the valve head. When sewage discharge is required, by utilizing the cooperation of the rotating part and the transmission part, the rotating part is rotated in the first direction, causing the spiral rib to lift the transmission body upward, the sealing element disengages from the second through hole, the second through hole opens, and dirt, impurities, and mud are quickly flushed out and finally discharged from the filter bottle. Rotating the rotating part in the second direction seals the sealing element and the second through hole again, which can quickly restore the filtration state. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the internal structure of the water-driven ball valve-free pre-filter provided in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the exploded structure of the valve head, insert, and connecting pipe provided in an embodiment of this application.

[0026] Figure 3 This is a cross-sectional view of the insert provided in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the water distributor structure provided in an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the filter component structure provided in an embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the limiting hole structure provided in the embodiments of this application;

[0030] Figure 7 This is a schematic diagram of the scraping assembly structure provided in an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of the transmission component structure provided in the embodiments of this application;

[0032] Figure 9 This is a cross-sectional view of the transmission component provided in an embodiment of this application;

[0033] Figure 10 This is a schematic diagram of the rotating cover structure provided in an embodiment of this application;

[0034] Figure 11 This is a schematic diagram of the rotating component structure provided in the embodiments of this application;

[0035] Figure 12 This is a schematic diagram of the internal structure of the water-driven ball valve-free pre-filter in the filtering state provided in the embodiment of this application.

[0036] Figure 13 This is a schematic diagram of the internal structure of the water-driven ball valve-free pre-filter provided in the embodiment of this application in the sewage discharge state.

[0037] In the diagram: 1-Connector; 2-Locking nut; 3-Valve head; 4-Pressure gauge; 5-Insertion; 6-Connecting pipe; 7-Diverter; 8-Filter assembly; 9-Scrubber assembly; 10-Filter bottle; 11-Transmission component; 12-Cap; 13-Rotating cover; 14-Quick connector; 15-Rotating component; 16-Seal; 17-Spring;

[0038] 501-Inner cylinder; 502-Outer cylinder; 503-Raw water chamber; 504-Clean water chamber; 505-First connecting hole; 506-Second connecting hole;

[0039] 701-Clamping block; 702-Water distribution blade; 703-Slide groove; 704-Step;

[0040] 801-Inner skeleton; 802-Annular ring; 803-Limiting sleeve; 804-Annular groove; 805-Snap fastener; 806-Guide block; 807-Limiting hole;

[0041] 901 - Scraper blade; 902 - Turbine blade; 903 - Third through hole;

[0042] 1101 - Transmission body; 1102 - Limiting post; 1103 - Circular rib; 1104 - Straight rib;

[0043] 1301 - Limiting groove.

[0044] 1501 - Rotating body; 1502 - Second through hole; 1503 - Spiral rib; 1504 - Limiting block. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does 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. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] like Figure 1As shown, in this embodiment, a water-driven ball valve-free pre-filter is provided. The pre-filter includes a valve head 3, a filter bottle 10, a rotating part 15, and a transmission part 11. The valve head 3 has an inlet and an outlet at its left and right ends. The inlet and outlet are connected to the household pipes through connectors 1, which can be heat-fused connectors. Connectors 1 have an annular protrusion on their outer periphery. Locking nuts 2 are fitted onto connectors 1 and valve head 3 and are connected by threads. Connectors 1 are locked onto valve head 3 by the annular protrusion and locking nuts 2. At the same time, a sealing gasket is provided between connectors 1 and valve head 3. The locking force of locking nuts 2 compresses the sealing gasket to achieve a sealed connection between connectors 1 and valve head 3.

[0049] The valve head 3 has an internal thread that engages with the external thread on the filter bottle 10. A sealing ring is added at the engagement point to form a sealed connection between the filter bottle 10 and the valve head 3, preventing water leakage from the gap between the two threads. The left side of the valve head 3 is the water inlet, and the right side is the water outlet. The diameters of the water inlet and the water outlet are equal or approximately equal, without further restrictions.

[0050] An insert 5 made of lead-resistant material is installed inside the valve head 3. The insert 5 can be welded to the inner wall of the valve body. Simultaneously, connecting pipes 6 are welded inside the valve head 3, located at both ends of the insert 5. The insert 5, together with the connecting pipes 6 at both ends, isolates the water path, preventing water from directly contacting the inner wall of the valve head 3, thus avoiding the problem of heavy metal leaching at the source. Similarly, the connecting pipes 6 are also made of lead-resistant material and can be welded to both ends of the insert 5. There should be no gaps at the connection between the insert 5 and the connecting pipes 6 to prevent water from seeping into the inner wall of the valve head 3.

[0051] In addition, a pressure gauge 4 can be installed on the valve head to monitor the water pressure inside the valve head. The pressure gauge 4 is connected to the thread of the valve head. Furthermore, since there is an embedded part 5 inside the valve head, the monitoring end of the pressure gauge 4 can be set on the embedded part 5 to ensure that the water pressure inside the valve head can be monitored. This will not be elaborated further here.

[0052] Please refer to Figure 1 The filter bottle 10 is equipped with a filter assembly 8. Water enters from the inlet of the valve head 3, and after passing through the pipe 6 and the inner insert 5, it enters the inner wall of the filter bottle 10. Under the action of the filter assembly 8, the water is filtered.

[0053] A first through hole is provided at the bottom of the filter bottle 10. The rotating component 15 rotates and seals with the first through hole. The rotating component 15 includes a rotating body 1501 with a second through hole 1502 and a spiral rib 1503 provided on the rotating body 1501. Please refer to Figure 11The second through hole 1502 is connected to the inside of the filter bottle 10. When the second through hole 1502 is open, impurities inside the filter bottle 10 can be discharged out of the bottle through the second through hole 1502. And since the second through hole 1502 is located at the bottom of the filter bottle 10, when the second through hole 1502 is sealed, impurities will be deposited above the second through hole 1502, so that they can be discharged directly through the second through hole 1502 when draining.

[0054] The spiral rib 1503 is located inside the filter bottle 10. When the rotating part 15 rotates, it can drive the rotating body 1501 and the spiral rib 1503 to rotate. The height of the spiral rib 1503 in the axial direction gradually changes, so that when the spiral rib 1503 rotates, its surface height will change. Then, by using the change in the surface height of the spiral rib 1503, the component located on its surface is driven to move axially.

[0055] The transmission component 11 includes a transmission body 1101 that moves axially and a sealing component 16 disposed at the first axial end of the transmission body 1101. Please refer to [reference needed]. Figure 1 and 9 The transmission body 1101 and the spiral rib 1503 abut against each other at the upper limit in the axial direction, thereby controlling the axial height of the transmission body 1101 by rotating the rotating component 15. Furthermore, the sealing component 16 corresponds to the second through hole 1502 in the axial direction. Therefore, when the height of the transmission body 1101 changes, the transmission body 1101 will seal the sealing component 16 and the second through hole 1502 at one position, and open the sealing component 16 and the second through hole 1502 at another position. When the sealing component 16 and the second through hole 1502 are sealed, the filter is in the filtering state; when the sealing component 16 opens the second through hole 1502, impurities can be discharged from the filter bottle 10 through the second through hole 1502, and the filter is in the sewage discharge state.

[0056] In summary, by providing an embedded part 5 inside the valve head 3, this application can prevent water from directly contacting the inner wall of the valve head 3, thus avoiding the problem of heavy metal leaching at the source. The filter assembly 8 inside the filter bottle 10 has a filtering function. When filtration is required, the sealing part 16 seals with the second through hole 1502. The source water enters from one end of the valve head 3, is filtered by the filter assembly 8, and the clean water reaches the inside of the filter assembly 8. Then, it is transported to the water-using end from the other end of the valve head 3. When sewage needs to be discharged, the rotating part 15 is rotated in the first direction by the cooperation of the rotating part 15 and the transmission part 11. This causes the spiral rib 1503 to lift the transmission body 1101 upward. The sealing part 16 is disengaged from the second through hole 1502, and the second through hole 1502 is opened. Dirt, impurities, and mud are quickly flushed out and discharged from the filter bottle 10. Rotating the rotating part 15 in the second direction causes the sealing part 16 to seal with the second through hole 1502 again, quickly restoring the filtration state.

[0057] In some embodiments, the filter assembly 8 may be fixedly disposed in the filter bottle 10, and the transmission body 1101 is limited to the filter assembly 8. The filter assembly 8 can provide stable guidance for the axial movement of the transmission body 1101, thereby constraining the transmission body 1101 to move only along the axial direction, and ensuring that the seal 16 can stably seal or open the second through hole 1502.

[0058] Further, please refer to Figure 5 and Figure 6 The filter assembly 8 includes an inner frame 801, and the inner frame 801 is provided with a limiting sleeve 803 along the axial direction. The limiting sleeve 803 has a limiting hole 807 at its top. The second axial end of the transmission body 1101 is provided with a limiting post 1102, which is located in the limiting hole 807 and slides axially relative to the limiting hole 807. Based on the filter assembly 8 being fixedly installed in the filter bottle 10, the axial movement of the transmission component 11 is made more stable by the cooperation of the limiting hole 807 and the limiting post 1102.

[0059] In addition, the limiting hole 807 also interferes with the limiting post 1102 in the axial direction. Please refer to [the relevant documentation]. Figure 6 and Figure 8 The limiting hole 807 can be a cross-shaped hole, and the corresponding limiting post 1102 is a cross-shaped rib adapted to the cross-shaped hole. Through the cooperation between the cross-shaped rib and the cross-shaped hole, the limiting post 1102 and the limiting hole 807 are circumferentially limited, preventing the transmission body 1101 from rotating. Of course, the circumferential limiting interference between the limiting post 1102 and the limiting hole 807 includes, but is not limited to, the embodiments given above, which will not be described in detail here, but all fall within the protection scope of this application.

[0060] Please refer to Figure 8 and Figure 9 A ring-shaped rib 1103 is provided in the middle section of the transmission body 1101. A sealing groove is formed on the ring-shaped rib 1103, and a sealing ring is filled in the sealing groove to slide and seal the gap between the transmission body 1101 and the limiting sleeve 803. A spring 17 is sleeved on the outer periphery of the transmission body 1101. Please refer to [reference needed]. Figure 1 One end of the spring 17 abuts against the upper surface of the annular rib 1103, and the other end abuts against the inner wall of the top of the limiting sleeve 803, thereby providing an elastic force for the transmission body 1101 or the seal 16 to move towards the second through hole 1502. It can be predicted that when the lifting force of the spiral rib 1503 on the transmission body 1101 disappears, the transmission body 1101 will automatically reset under the action of the spring 17, realizing the automatic sealing of the seal 16 and the second through hole 1502, and then automatically switching from the sewage discharge state to the filtration state.

[0061] In some embodiments, to ensure that the lifting force of the helical ribs 1503 on the transmission body 1101 is more uniform and to improve the stability of its axial movement, two helical ribs 1503 can be provided. The two helical ribs 1503 are centrally symmetrically arranged on the rotating body 1501, and a radially extending straight rib 1104 is provided at the first axial end of the transmission body 1101. Please refer to... Figure 8 and Figure 9 The straight rib 1104 abuts against the two spiral ribs 1503 at the upper limit in the axial direction. The rotating spiral ribs 1503 are used to push the straight rib 1104 to move in the axial direction, thereby causing the transmission body 1101 and the seal 16 to move in the axial direction.

[0062] The inner frame 801 has a hollow outer surface and a hollow interior. A filter screen is provided on the outer periphery of the inner frame 801 so that water enters the interior of the inner frame 801 from the outside through the filter screen and the hollow structure. Impurities in the water are filtered into the space between the inner frame 801 and the filter bottle 10 by the filter screen, while the water inside the inner frame 801 is clean water.

[0063] Please refer to Figure 5 One end of the limiting sleeve 803 extends into the inner frame 801, and the other end extends out of the bottom outside of the inner frame 801. By utilizing the nested structure of the limiting sleeve 803 and the inner frame 801, the length of the filter assembly 8 in the axial direction can be compressed, ensuring the filter structure is compact and saving installation space.

[0064] Furthermore, annular rings 802 are provided at the upper and lower ends of the inner frame 801, and sealing rings are provided inside the annular rings 802 to achieve a sealed connection with the filter screen, ensuring that water outside the filter assembly 8 can completely pass through the filter screen before entering the inner frame 801, thus ensuring the filtration effect of the filter assembly 8.

[0065] Please refer to Figure 2 and Figure 3 The embedded component 5 includes an inner cylinder 501 and an outer cylinder 502. The upper ends of the inner cylinder 501 and the outer cylinder 502 are closed and connected, while the lower ends are open. A raw water chamber 503 is formed between the inner cylinder 501 and the outer cylinder 502, and a clean water chamber 504 is formed inside the inner cylinder 501. The outer cylinder 502 has a first connecting hole 505 that connects the inlet of the valve head 3 and the raw water chamber 503. Specifically, the first connecting hole 505 is connected to the left connecting pipe 6, so that the water entering the valve head 3 enters the raw water chamber 503 after passing through the left connecting pipe 6 and the first connecting hole 505. The inner cylinder 501 has a second connecting hole 506 that connects the clean water chamber 504 and the outlet of the valve head 3. Specifically, the second connecting hole 506 is connected to the right connecting pipe 6, so that the water in the clean water chamber 504 exits through the second connecting hole 506 and the right connecting pipe 6.

[0066] The raw water chamber 503 and the purified water chamber 504 are two independent chambers. The raw water chamber 503 is distributed on the outer periphery of the inner cylinder 501, thus forming a downward-flowing annular water flow on the opening side of the raw water chamber 503. The annular water flow can flow into the filter bottle 10, specifically into the annular space between the filter bottle 10 and the inner frame 801. The upper end of the inner frame 801 is sealed to the inner cylinder 501, thus connecting the interior of the inner frame 801 with the purified water chamber 504. The interior of the inner frame 801 contains water filtered by the filter screen, so the water inside the purified water chamber 504 is also filtered purified water.

[0067] In addition, a water distributor 7 is also installed in the aforementioned annular space. Please refer to [reference needed]. Figure 1 and Figure 4 The water distributor 7 is fitted on the upper outer periphery of the inner frame 801. The outer ring of the water distributor 7 is locked and engaged with the inner wall of the filter bottle 10, thereby fixing the water distributor 7 relative to the filter bottle 10. Specifically, multiple locking blocks 701 can be set on the outer ring of the water distributor 7, and multiple locking grooves can be set on the inner wall of the filter bottle 10 to achieve the locking and engaging of the water distributor 7 and the filter bottle 10.

[0068] To facilitate the installation and removal of the distributor 7 from the filter bottle 10, an opening can be provided at the top of the slot. The locking block 701 can slide into the slot along the opening. At the same time, the top of the slot can be limited by the wall of the outer cylinder 502. When the locking block 701 enters the slot, the wall of the outer cylinder 502 abuts against the opening of the slot to prevent the locking block 701 from falling off and to stably restrain the locking block 701 in the slot. Furthermore, when the filter bottle 10 and the valve head 3 are assembled in place, the wall of the outer cylinder 502 can automatically abut against the opening of the slot. When the filter bottle 10 is removed from the valve head 3, the opening of the slot is no longer restricted by the outer cylinder 502, so the installation and removal of the distributor 7 can be achieved very conveniently.

[0069] The inner ring of the water distributor 7 is engaged with the upper limiting engagement of the inner frame 801, thereby allowing the filter assembly 8 to be fixed relative to the filter bottle 10; specifically, the inner ring of the water distributor 7 has an annular step 704, please refer to Figure 4 Multiple clips 805 that mate with steps 704 are provided on the upper part of the inner frame 801. Please refer to [reference needed]. Figure 5The buckle 805 can abut against the upper surface of the step 704; and a shoulder is also provided on the inner frame 801, which can abut against the lower surface of the inner ring or the step 704, thereby forming a stable clamping structure, so that the inner frame 801 is stably clamped in the inner ring of the distributor 7 in the axial direction. In addition, in order to prevent the filter assembly 8 from rotating relative to the distributor 7, several sliding grooves 703 can be provided in the inner ring of the distributor 7, and several guide blocks 806 that cooperate with the sliding grooves 703 are provided on the upper part of the inner frame 801. The guide blocks 806 can slide into the sliding grooves 703 in the axial direction, but have a limiting effect with the sliding grooves 703 in the circumferential direction to prevent the inner frame 801 from rotating. It should be noted that the snap-fit ​​form between the distributor 7 and the filter assembly 8 includes but is not limited to the above-mentioned methods, which will not be described in detail here. As long as the above technical effects are achieved, they all fall within the protection scope of this application.

[0070] Please refer to Figure 4 Multiple water-distributing blades 702 are distributed between the inner and outer rings of the water distributor 7. When water in the original water chamber 503 flows into the annular space, it will first be turbulent by the water-distributing blades 702, and then enter the annular space between the filter assembly 8 and the filter bottle 10. The water-distributing blades 702 can be arranged in various ways, such as tilting downwards or being set at a certain arc, as long as they have a turbulence effect, which will not be elaborated here.

[0071] A rotating scraping assembly 9 is also provided in the annular space; please refer to [reference needed]. Figure 1 and Figure 7 The scraping assembly 9 is located below the water distributor 7 and is sleeved on the outer periphery of the inner frame 801. Water flowing out of the water distributor 7 will flow directly to the scraping assembly 9. The outer periphery of the scraping assembly 9 is also hollowed out, which allows water to flow on both sides of the scraping assembly 9. The hollowed-out position of the scraping assembly 9 corresponds to the hollowed-out position of the inner frame 801, so that the scraper 901 on the scraping assembly 9 can scrape the impurities on the filter screen. The scraper 901 can also scrape the inner wall of the filter bottle 10.

[0072] As can be seen, the scraping assembly 9 is distributed between the inner frame 801 and the filter bottle 10, and the scraper strips 901 on the scraping assembly 9 can contact the filter screen and the inner wall of the filter bottle 10 respectively, thereby achieving scraping and cleaning of the filter screen and the filter bottle 10 through the rotation of the scraping assembly 9. Please refer to... Figure 7 A third through hole 903 is provided at the bottom of the scraping assembly 9. The third through hole 903 is fitted into the outer periphery of the limiting sleeve 803 on the outer side of the bottom of the inner skeleton 801, so that the scraping assembly 9 can rotate more stably relative to the filter assembly 8. Since the filter assembly 8 is fixed relative to the filter bottle 10, the rotation effect of the scraping assembly 9 in the filter bottle 10 is more stable.

[0073] In addition, an annular groove 804 is provided on the outer periphery of the limiting sleeve 803 on the bottom outer side of the inner skeleton 801. Please refer to... Figure 1 and Figure 5 A pressure cap 12 is fastened inside the annular groove 804. The pressure cap 12 is detachably provided in the annular groove 804, and the outer edge of the pressure cap 12 can protrude out of the annular groove 804. The upper surface of the pressure cap 12 abuts against the lower surface of the scraping assembly 9 to support the scraping assembly 9 to rotate and prevent the scraping assembly 9 from axial displacement.

[0074] The rotation of the scraping assembly 9 in this application is water-driven, that is, a plurality of turbine blades 902 are provided axially on the top of the scraping assembly 9. Please refer to... Figure 7 The turbine blades 902 are located in an annular space and are inclined relative to the direction of water flow. After the water flows through the distributor 7, it will first act on the turbine blades 902, thereby using the force generated by the water flow to drive the scraping assembly 9 to rotate as a whole, so as to realize the rotation and scraping of the filter screen and filter bottle 10 by the scraping assembly 9.

[0075] For easier rotation of rotating part 15, please refer to... Figure 1 A rotating cover 13 capable of stable rotation is provided around the outer periphery of the filter bottle 10. The end of the rotating body 1501 facing away from the spiral rib 1503 is located outside the filter bottle 10, and multiple limiting blocks 1504 are provided on the rotating body 1501. Please refer to... Figure 11 Correspondingly, a limiting groove 1301 is provided on the rotating cover 13 to engage with the limiting block 1504. Please refer to [reference needed]. Figure 10 The rotating cover 13 drives the rotating body 1501 to rotate, thereby controlling the discharge and filtration status of the filter and facilitating manual operation.

[0076] Please refer to Figure 12 This is a schematic diagram of the internal structure of the filter in filtration mode. Raw water enters from the left end of valve head 3, passes through raw water chamber 503 into the annular space between filter assembly 8 and filter bottle 10, and then passes through water distributor 7 and filter screen before entering the inner frame 801. Under the continuous flow of water, the purified water inside the inner frame 801 enters the purified water chamber 504, and is then delivered to the user end through the outlet of valve head 3. Please refer to... Figure 13 Rotating the rotating cover 13 in the first direction (clockwise) causes the rotating component 15 to rotate. The spiral rib 1503 lifts the transmission component 11, releasing the seal between the sealing component 16 and the second through hole 1502. The sewage discharge channel opens, and dirt, impurities, and mud are quickly flushed out and discharged outside the filter bottle 10. When filtration is required again, rotating the rotating cover 13 in the second direction (counterclockwise) eliminates the lifting effect of the spiral rib 1503 on the transmission component 11. The transmission component 11 automatically resets under the action of the spring 17, achieving a seal between the sealing component 16 and the second through hole 1502, thus entering the filtration state described above.

[0077] In addition, a quick connector 14 can be provided on the second through hole 1502, please refer to Figure 1It can be connected to the second through hole 1502 through a thread seal. The bottom of the quick connector 14 can be directly inserted into the drain pipe or other devices, so that impurities and sludge can be directly put into the floor drain.

[0078] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0079] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A water-driven, ball-valve-free pre-filter, characterized in that, include: The valve head (3) is used to connect the pipe. The valve head (3) is provided with a lead-proof insert (5) inside. The insert (5) is used to prevent water flow from contacting the inner wall of the valve head (3). The filter bottle (10) is sealed and connected to the valve head (3). The filter bottle (10) is provided with a filter assembly (8) inside. The bottom of the filter bottle (10) is provided with a first through hole. The rotating component (15) is rotaryly sealed with the first through hole. The rotating component (15) includes a rotating body (1501) with a second through hole (1502) and a spiral rib (1503) on the rotating body (1501). The second through hole (1502) communicates with the inside of the filter bottle (10). The spiral rib (1503) is located inside the filter bottle (10) and its height gradually changes in the axial direction. The transmission component (11) includes a transmission body (1101) that moves along the axial direction and a sealing member (16) disposed at the first axial end of the transmission body (1101). The transmission body (1101) abuts against the spiral rib (1503) in the axial direction. The sealing member (16) corresponds to the second through hole (1502) in the axial direction and is used to seal or open the second through hole (1502).

2. The water-driven ball-valve-less pre-filter according to claim 1, characterized in that, The filter assembly (8) is fixedly disposed inside the filter bottle (10), and the transmission body (1101) is limited to the filter assembly (8) to constrain the transmission body (1101) to move only along the axial direction.

3. The water-driven ball-valve-less pre-filter according to claim 2, characterized in that, The filter assembly (8) includes an inner frame (801), the inner frame (801) is provided with a limiting sleeve (803) along the axial direction, the limiting sleeve (803) is provided with a limiting hole (807) at the top, the transmission body (1101) is provided with a limiting post (1102) at the second axial end, the limiting post (1102) is provided in the limiting hole (807) and slides axially relative to the limiting hole (807), the limiting hole (807) and the limiting post (1102) are mutually limited in the circumferential direction to limit the rotation of the transmission body (1101).

4. The water-driven ball-valve-less pre-filter according to claim 3, characterized in that, The transmission body (1101) is provided with an annular rib (1103), which is used to slide and seal the gap between the transmission body (1101) and the limiting sleeve (803). A spring (17) is sleeved on the outer periphery of the transmission body (1101). One end of the spring (17) abuts against the upper surface of the annular rib (1103), and the other end abuts against the inner wall of the top of the limiting sleeve (803), which is used to provide elastic force for the transmission body (1101) or the sealing element (16) to move towards the second through hole (1502).

5. The water-driven ball-valve-less pre-filter according to claim 3, characterized in that, The number of spiral ribs (1503) is two, and the two spiral ribs (1503) are centrally symmetrical. The first axial end of the transmission body (1101) is also provided with a radially extending rib (1104). The rib (1104) abuts against the two spiral ribs (1503) at the upper limit in the axial direction. The rotating spiral rib (1503) is used to push the rib (1104) to move axially.

6. The water-driven ball-valve-less pre-filter according to any one of claims 3-5, characterized in that, The outer periphery of the inner frame (801) is hollowed out, and a filter screen is provided on the outer periphery of the inner frame (801). The inner frame (801) is hollow inside. One end of the limiting sleeve (803) extends into the inner frame (801), and the other end extends out of the bottom outside of the inner frame (801). The upper and lower ends of the inner frame (801) are sealed with the filter screen.

7. The water-driven ball-valve-less pre-filter according to claim 6, characterized in that, The insert (5) includes an inner cylinder (501) and an outer cylinder (502). The upper ends of the inner cylinder (501) and the outer cylinder (502) are closed and connected, and the lower ends are open. A raw water cavity (503) is formed between the inner cylinder (501) and the outer cylinder (502), and a clean water cavity (504) is formed inside the inner cylinder (501). The outer cylinder (502) has a first connecting hole (505) that connects the inlet of the valve head (3) and the raw water chamber (503); the inner cylinder (501) has a second connecting hole (506) that connects the clean water chamber (504) and the outlet of the valve head (3). The raw water chamber (503) is distributed on the outer periphery of the inner cylinder (501), thereby forming a downward-flowing annular water flow. The upper end of the inner frame (801) is sealed to the inner cylinder (501) so that the interior of the inner frame (801) is connected to the purified water chamber (504).

8. The water-driven ball-valve-less pre-filter according to claim 7, characterized in that, The annular water flows into the annular space between the inner frame (801) and the filter bottle (10). A water distributor (7) is provided in the annular space. The water distributor (7) is sleeved on the upper outer periphery of the inner frame (801). The outer ring of the water distributor (7) is locked to the inner wall of the filter bottle (10). The inner ring of the water distributor (7) is locked to the upper part of the inner frame (801) so that the water distributor (7) and the inner frame (801) are fixedly set relative to the filter bottle (10). A number of water-dividing blades (702) are distributed between the inner ring and the outer ring. After the water flows through the water-dividing blades (702), it enters the annular space.

9. The water-driven ball-valve-less pre-filter according to claim 8, characterized in that, The annular space is also provided with a rotating scraping assembly (9). The scraping assembly (9) is located on the lower side of the water distributor (7) and is sleeved on the outer periphery of the inner frame (801). The outer periphery of the scraping assembly (9) is hollowed out. The hollowed-out position of the scraping assembly (9) corresponds to the hollowed-out position of the inner frame (801). The scraping assembly (9) is provided with scraping strips (901) that can scrape the filter screen and the inner wall of the filter bottle (10).

10. The water-driven ball-valve-less pre-filter according to claim 9, characterized in that, The scraping assembly (9) has a third through hole (903) at the bottom. The third through hole (903) is fitted into the outer periphery of the limiting sleeve (803) on the outer side of the bottom of the inner frame (801). The outer periphery of the limiting sleeve (803) on the outer side of the bottom of the inner frame (801) has an annular groove (804). A pressure cap (12) is fastened in the annular groove (804). The upper surface of the pressure cap (12) abuts against the bottom surface of the scraping assembly (9) to support the scraping assembly (9). The top of the scraping assembly (9) is provided with a plurality of turbine blades (902) along the circumferential direction. The turbine blades (902) are located in the annular space so that the water flow acts on the turbine blades (902) and drives the scraping assembly (9) to rotate.

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