A pre-filter for a filter bottle

Abstract

The utility model discloses a kind of prefilter of upper filter bottle, comprising: filter bottle, valve head and switching component;Filter bottle is provided with containing cavity inside, containing cavity is installed with filter assembly, and filter assembly is with containing cavity is divided into raw water cavity located at the outside of filter assembly and clean water cavity located at the inside of filter assembly, filter hole channel of filter assembly communicates raw water cavity and clean water cavity, filter assembly is used to filter water passing through by filter hole channel;Valve head is screw-connected in one end of filter bottle, and valve head is provided with water inlet, water outlet and blow-off port;Switching component is arranged in the inside of valve head, and switching component has filter state and backwashing state, when switching component is in filter state, blow-off port is closed, and water inlet is communicated with raw water cavity, and water outlet is communicated with clean water cavity, when switching component is in backwashing state, water outlet is closed, and water inlet is communicated with raw water cavity by backwashing flow channel, and blow-off port is communicated with raw water cavity.Such can avoid that dirt in filter cannot be smoothly discharged.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a pre-filter with an upper filter bottle. 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, it is necessary to install filtration devices on the water-using equipment.

[0003] Pre-filters are typically installed after the water meter. Their main function is to restore tap water to its pre-treatment standard, protecting downstream equipment. Pre-filters have a filtration precision of 5-100 microns, filtering out visible impurities such as sediment, rust, and suspended matter, significantly extending the lifespan of subsequent equipment.

[0004] Existing pre-filters have their filter bottles located at the bottom of the valve head, including the filter element assembly drain valve and drain pipe, resulting in a relatively long downward extension of the ordinary pre-filter. Due to the long bottom of the existing bottom filter, it is not possible to install and use it correctly in some homes with narrow installation spaces. Some users install it at an angle or horizontally, which causes dirt to be unable to be discharged smoothly, and impurities are deposited at the bottom of the unit by gravity.

[0005] Therefore, how to provide a pre-filter with an upper filter bottle to at least partially solve the above problems is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a pre-filter with an upper filter bottle, which can prevent dirt inside the filter from failing to drain properly.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A pre-filter with an upper filter bottle, comprising:

[0009] A filter bottle has an internal receiving cavity, in which a filter assembly is installed. The filter assembly divides the receiving cavity into a raw water cavity located outside the filter assembly and a clean water cavity located inside the filter assembly. The filter channel of the filter assembly connects the raw water cavity and the clean water cavity. The filter assembly is used to filter water through the filter channel.

[0010] The valve head is threaded to one end of the filter bottle and is equipped with an inlet, an outlet and a drain outlet.

[0011] The switching component is located inside the valve head. The switching component has a filtering state and a backwashing state. When the switching component is in the filtering state, the drain port is closed, and the inlet is connected to the raw water chamber and the outlet is connected to the clean water chamber. When the switching component is in the backwashing state, the outlet is closed, and the inlet is connected to the raw water chamber through the backwashing channel set by the filtering component, and the drain port is connected to the raw water chamber.

[0012] In one possible implementation, a lead separator is embedded in the inner wall of the valve head. The lead separator is injection molded and welded to the inner wall of the valve head. The lead separator is used to prevent the precipitation of heavy metals.

[0013] In one possible implementation, the switching component includes an insert and a distributor. The insert is fixedly disposed inside the lead separator, and the distributor is disposed inside the valve head and located at the upper end of the insert. The insert has a first cavity and a second cavity. The first cavity is connected to the inlet, and the second cavity is connected to the outlet. The distributor has a water distribution blade hole and a first through hole. A filter assembly is inserted into the first through hole, and the filter assembly can move axially along the first through hole to close the water distribution blade hole and connect the first cavity and the backwash channel, or to open the water distribution blade hole and connect the first cavity and the raw water cavity.

[0014] The inner wall of the lead separator is provided with guide ribs, and the outer wall of the insert is provided with guide grooves that cooperate with the guide ribs.

[0015] In one possible implementation, the filter assembly includes a stacked frame and several stacked plates movably fitted around the outer periphery of the stacked frame. The stacked frame has a cylindrical structure and its sidewalls are provided with through-type water passages. Backwash channels are provided on the outer sidewalls of the stacked frame. Gaps are left between the stacked plates to form filter channels. A water distributor is fitted on the end of the stacked frame near the drain port, and the end of the stacked frame near the drain port is provided with an annular edge. A backwash silicone sleeve is fitted on the annular edge, which is used to close or open the water distributor blade holes when the filter assembly moves axially.

[0016] In one possible implementation, a backwashing net is provided at one end of the laminated frame near the drain outlet. The backwashing net is used to prevent unfiltered water from entering the backwashing channel for backwashing. A net cover is also provided at one end of the laminated frame near the drain outlet. The net cover is fastened to the lower end of the laminated frame to press the backwashing net to prevent it from falling off.

[0017] The outer periphery of the laminate skeleton is provided with several backwash holes that communicate with the backwash flow channel along its axial direction, and the axis of the backwash holes is tangent to the outer periphery of the laminate skeleton.

[0018] In one possible implementation, an upper seal is provided at the end of the filter bottle away from the valve head, a sealing ring is provided between the upper seal and the filter bottle, a pressure gauge is detachably mounted on the upper seal for detecting the pressure inside the filter bottle, and a fixing member is provided on the outer side of the upper end of the filter bottle for fixing the upper seal to the end of the filter bottle.

[0019] A reset element is provided between the upper seal and the stacked plate skeleton, and an inner cover is provided between the stacked plate skeleton and the reset element, with the stacked plates limited to the inner cover and the water distributor.

[0020] The lower end of the upper seal is fastened with an external scraping frame, which is equipped with scraper bars located on the outer periphery of the stacked plates. The scraper bars are used to scrape and wash impurities inside the filter bottle.

[0021] In one possible implementation, a lower seal is rotatably provided at the lower end of the valve head, a drain port is provided at the axis of the lower seal, a valve core assembly is provided inside the lower seal, and a movable cover that can move along the axis of the laminated skeleton is provided between the lower seal and the insert. The lower seal is used to drive the movable cover to move when rotated, thereby driving the laminated skeleton to move.

[0022] In one possible implementation, a spiral rib is provided on the upper circumference of the lower seal, and a convex rib is provided on the corresponding edge of the movable cover to cooperate with the spiral rib. The spiral rib abuts against the lower side of the convex rib to allow the movable cover to move along its axial direction. An abutting post is provided on the upper side of the movable cover, and the abutting post passes through the insert to abut against the lower end of the laminated skeleton.

[0023] In one possible implementation, a valve core assembly and a valve stem are provided inside the lower seal. The upper end of the valve stem is engaged with the bottom end of the insert, and the lower end of the valve stem is connected to the upper valve block of the valve core assembly. The lower valve block of the valve core assembly is fixed to the drain port. The upper valve block and the lower valve block can rotate relative to each other to open or close the drain port.

[0024] In one possible implementation, the lower end of the lower seal is provided with an outer polygonal protrusion, and a knob cover is installed on the outside of the outer polygonal protrusion. The knob cover drives the lower seal to rotate through the outer polygonal protrusion.

[0025] Compared to the aforementioned background technology, the present invention provides a pre-filter with an upper filter bottle, comprising: a filter bottle, a valve head, and a switching assembly; the filter bottle has an internal receiving cavity, in which a filter assembly is installed, and the filter assembly divides the receiving cavity into a raw water cavity located outside the filter assembly and a clean water cavity located inside the filter assembly, the filter channel of the filter assembly connecting the raw water cavity and the clean water cavity, and the filter assembly is used to filter water passing through the filter channel; the valve head is threaded to one end of the filter bottle, and the valve head is provided with an inlet, an outlet, and a drain outlet; the switching assembly is disposed inside the valve head, and the switching assembly has a filtering state and a backwashing state. When the switching assembly is in the filtering state, the drain outlet is closed, and the inlet is connected to the raw water cavity, and the outlet is connected to the clean water cavity; when the switching assembly is in the backwashing state, the outlet is closed, and the inlet is connected to the clean water cavity, and the drain outlet is connected to the raw water cavity.

[0026] Specifically, by changing the different states of the switching component, different functions of the filter can be achieved. When in the filtration state, water flows from the raw water chamber through the filter component into the clean water chamber. When the switching component is in the backwashing state, water flows from the clean water chamber through the filter component into the raw water chamber, thus backwashing the filter component. In addition, the valve head in this embodiment is located at one end of the filter bottle. When the filter is installed and used, this end will be located at the bottom. In this way, the drain port will be located at the bottom of the entire filter, which is conducive to the discharge of dirt. Moreover, the filter has both filtration and backwashing states to adapt to different application scenarios. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the filter provided in an embodiment of the present utility model;

[0029] Figure 2 This is a schematic diagram of the valve head provided in an embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of the lead separator provided in an embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the embedded component provided in an embodiment of the present utility model;

[0032] Figure 5 for Figure 4Another structural diagram;

[0033] Figure 6 A schematic diagram of the structure of the lead separator and the insert provided in the embodiment of this utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the water distributor provided in an embodiment of the present utility model;

[0035] Figure 8 This is a schematic diagram of the external scraping frame structure provided in an embodiment of the present utility model;

[0036] Figure 9 This is a schematic diagram of the structure of the inner cover provided in an embodiment of the present utility model;

[0037] Figure 10 This is a schematic diagram of the structure of the stacked skeleton provided in an embodiment of the present utility model;

[0038] Figure 11 This is a schematic diagram of the valve stem provided in an embodiment of the present utility model;

[0039] Figure 12 This is a schematic diagram of the movable cover structure provided in an embodiment of the present utility model;

[0040] Figure 13 This is a schematic diagram of the valve core assembly provided in an embodiment of the present utility model;

[0041] Figure 14 This is a schematic diagram of the structure of the lower sealing element provided in an embodiment of the present utility model;

[0042] Figure 15 This is a schematic diagram of the water flow direction in the filtration state of the lower sealing element provided in this embodiment of the utility model;

[0043] Figure 16 This is a schematic diagram of the water flow direction during backwashing of the lower seal provided in an embodiment of the present invention.

[0044] in:

[0045] 1-Valve head; 101-Inlet; 102-Outlet;

[0046] 2-Lead separator; 201-Guide rib; 202-Ring limiting rib; 203-Limiting point

[0047] 3-Installation piece; 301-First cavity; 302-Second cavity; 303-Guide groove; 304-Square groove;

[0048] 4-Water distributor; 401-Water distributor blade hole; 402-First through hole;

[0049] 5-Stacked pieces;

[0050] 6-Filter bottle; 601-Raw water chamber; 602-Purified water chamber;

[0051] 7-External scraping frame; 701-Scraper strip; 702-Snap fastener;

[0052] 8-Upper seal; 9-Pressure gauge; 10-Fixing component; 11-Reset component;

[0053] 12-Inner cover; 1201-Ring edge;

[0054] 13-Laminated frame; 1301-Backwash channel; 1302-Backwash hole; 1303-Annular edge; 1304-Water passage;

[0055] 14-Backwash silica gel; 15-Backwash mesh; 16-Mesh cover; 17-Valve stem;

[0056] 18-Modible cover; 1801-Abutting post; 1802-Protruding rib;

[0057] 19-Flange;

[0058] 20-Valve core assembly; 2001-Upper valve block; 2002-Lower valve block;

[0059] 21-Lower seal; 2101-Seal fan-shaped protrusion; 2102-Helical rib; 2103-Drain outlet; 2104-Outer polygonal protrusion;

[0060] 22- Knob cover; Detailed Implementation

[0061] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0062] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0064] The purpose of this utility model is to provide a pre-filter with an upper filter bottle 6. By setting the filter bottle 6 and the filter assembly above the valve head 1, it is more reasonable to set the drain port 2103 at the lower end of the valve head 1 since the discharge of impurities is affected by gravity. The filter bottle 6 can be backwashed by the stacked discs 5, which improves the backwashing efficiency. Moreover, the structure is simple, the flow rate is increased, and the conventional ball valve structure is eliminated. The switching between filtration and rinsing can be achieved by rotating the bottom shell of the valve head 1, which reduces the cost and achieves lead isolation of the whole machine, bringing users a better cost performance.

[0065] Among them, the appendix Figure 15 A diagram showing the water flow direction when the filter is in filtration mode, attached. Figure 16 This is a diagram showing the water flow direction when the filter is in backwashing mode.

[0066] To achieve the above objectives, the present invention provides the following technical solution:

[0067] Please see Figures 1 to 16 This embodiment provides a pre-filter with an upper filter bottle, including: a filter bottle 6, a valve head 1, and a switching assembly; the filter bottle 6 has a receiving cavity inside, and a filter assembly is installed in the receiving cavity. The filter assembly divides the receiving cavity into a raw water cavity 601 located outside the filter assembly and a clean water cavity 602 located inside the filter assembly. The filter channel of the filter assembly connects the raw water cavity 601 and the clean water cavity 602, and the filter assembly is used to filter water passing through the filter channel; the valve head 1 is threaded to one end of the filter bottle 6, and the valve head 1 is provided with a water inlet 101. The valve head 1 has an outlet 102 and a drain outlet 2103. The switching component is located inside the valve head 1. The switching component has a filtering state and a backwashing state. When the switching component is in the filtering state, the drain outlet 2103 is closed, and the inlet 101 is connected to the raw water chamber 601, and the outlet 102 is connected to the clean water chamber 602. When the switching component is in the backwashing state, the outlet 102 is closed, and the inlet 101 is connected to the raw water chamber 601 through the backwashing channel 1301 set by the filtering component, and the drain outlet 2103 is connected to the raw water chamber 601.

[0068] In this embodiment, the filter bottle 6 is a cylindrical structure with an internal receiving cavity. A valve head 1 is threadedly connected to the lower end of the filter bottle 6 to seal the entire receiving cavity. A filter assembly and a switching assembly are installed in the receiving cavity inside the filter bottle 6, with the filter assembly located at the top and the switching assembly at the bottom, i.e., inside the valve head 1. The filter assembly is also a cylindrical structure, dividing the receiving cavity into two parts: one part, located outside the filter assembly, is the raw water cavity 601, and the other part, located inside the filter assembly, is the purified water cavity 6. 02. The water in the raw water chamber 601 is not filtered, but when the water in the raw water chamber 601 passes through the filter channel of the filter assembly, it will be filtered and enter the clean water chamber 602. At the same time, the filter assembly is also provided with a backwash channel 1301, which can communicate with the raw water chamber 601. In this embodiment, the filter bottle 6 is used to receive the filtered water. Its lower end is provided with an external thread. The valve head 1 is a metal structure, and its internal thread engages with the external thread on the filter bottle 6, pressing the seal installed on the groove of the filter bottle 6. A ring is formed to create a seal; the left side of the valve head 1 has an inlet 101, and the right side has an outlet 102. The diameter of the inlet 101 is equal to the diameter of the outlet 102. The lower end of the valve head 1 is the drain port 2103; the switching component can have two working states: filtration state and backwashing state. When the switching component is in the filtration state, the filter will perform the filtration function. At this time, the drain port 2103 is closed, and the inlet 101 and the outlet 102 are open. The inlet 101 is connected to the original water chamber 601. The filter is connected to the outlet 102. When the filter needs to be drained, the outlet 102 will be closed by the outside, but the inlet 101 will not be closed. The switching component will connect the inlet 101 to the original water chamber 601 through the backwash channel 1301 set in the filter component. The original water chamber 601 is connected to the drain 2103. In this way, the direction of water flow will be opposite to the direction of filtration, thereby backwashing the filter component and discharging the dirt from the drain 2103.

[0069] In other words, by changing the different states of the switching component, different functions of the filter can be achieved. When in the filtration state, water flows from the raw water chamber 601 through the filter component into the clean water chamber 602. When the switching component is in the backwashing state, water flows from the inlet 101 into the backwash channel 1301, and then from the backwash channel 1301 through the filter component into the raw water chamber 601, thus backwashing the filter component. Moreover, in this embodiment, the valve head 1 is set at one end of the filter bottle 6. When the filter is installed and used, this end will be located at the lower end. In this way, the drain port 2103 will be located at the bottom of the entire filter, which is conducive to the discharge of dirt. In addition, the filter has two states, filtration and backwashing, which can adapt to different application scenarios.

[0070] In one possible implementation, a lead separator 2 is embedded in the inner wall of the valve head 1. The lead separator 2 is made of plastic and is injection molded and welded to the inner wall of the valve head 1. The lead separator 2 is used to prevent the precipitation of heavy metals.

[0071] Furthermore, the switching component includes an insert 3 and a distributor 4. The insert 3 is fixedly installed inside the lead separator 2, and the distributor 4 is installed inside the valve head 1 and located at the upper end of the insert 3. The insert 3 and the lead separator 2 are interlocked. Specifically, the inner wall of the lead separator 2 is provided with a vertical guide rib 201, and the outer wall of the insert 3 is provided with a guide groove 303 that cooperates with the guide rib 201. In this way, the two can not only guide each other during insertion, but also restrict their installation position. The insert 3 has holes on both sides that communicate with the inlet 101 and the outlet 102, but it only has a first cavity 301 and a second cavity 302 inside. The first cavity 301 communicates with the inlet 101, and the second cavity 302 communicates with the outlet 102.

[0072] A water distributor 4 is installed above the embedded part 3. The water distributor 4 is provided with a water distribution blade hole 401 and a first through hole 402. The first through hole 402 is used to insert a filter assembly, and the filter assembly can move axially along the first through hole 402. The water distribution blade hole 401 is located on the outer ring of the first through hole 402. In this embodiment, the filter assembly can close or open the water distribution blade hole 401 by moving axially within the first through hole 402. That is, when the filter assembly moves upward, it will close the water distribution blade hole 401. At this time, the switching component is in the backwashing state, and the water flow... The water will enter the first chamber 301 from the inlet 101, and then enter the backwash channel 1301 from the first chamber 301. Since the backwash channel 1301 is connected to the raw water chamber 601, the water flow will wash away the dirt on the filter component and enter the raw water chamber 601. However, when the filter component moves downward, it will open the water distribution blade hole 401 and disconnect the connection between the first chamber 301 and the backwash channel 1301. At this time, the switching component is in the filtering state, and the water flow will enter the first chamber 301 from the inlet 101 and then enter the raw water chamber 601 for filtration.

[0073] In other words, by switching the state of the components, the filter components can be moved axially, thereby changing the direction of the water flow after the first chamber 301. That is, the water flow from the first chamber 301 can directly enter the original water chamber 601 to start filtration, or it can enter the backwash channel 1301 to backwash the filter components.

[0074] In one possible implementation, the filter assembly includes a stacked frame 13 and a plurality of stacked plates 5 movably fitted around the outer periphery of the stacked frame 13. That is, the outer end of the stacked frame 13 is fitted with a plurality of stacked plates 5 as filter media, and gaps are left between the plurality of stacked plates 5 to form filter channels, which can filter fine particles. When the stacked frame 13 moves axially, the plurality of stacked plates 5 will be tightened in the filtering state, and the stacked plates 5 will be loosened in the backwashing state.

[0075] The stacked plate frame 13 has a cylindrical structure and its side wall is provided with a through-type water passage 1304 to prevent the stacked plate frame 13 from affecting the flow of water between the raw water chamber 601 and the clean water chamber 602; at the same time, the backwash channel 1301 in this embodiment is provided on the outer side wall of the stacked plate frame 13 so that the water flow can rinse from the inside of the flushing stacked plate 5 to the outside, so as to flush impurities into the raw water chamber 601; the water distributor 4 is sleeved on the end of the stacked plate frame 13 near the drain port 2103, that is, the lower end of the stacked plate frame 13, and its top surface abuts against the stacked plate 5 to prevent the stacked plate 5 from detaching from the lower end of the stacked plate frame 13;

[0076] The disc frame 13 has an annular edge 1303 at one end near the drain outlet 2103, which is the lower end of the disc frame 13. A backwash silicone 14 sleeve is fitted on the annular edge 1303. It can be understood that the lower end of the disc frame 13 passes through the water distributor 4, and the annular edge 1303 corresponds to the water distributor blade hole 401. Therefore, when the filter assembly moves up and down, that is, when the disc frame 13 moves up and down, the annular edge 1303 and the backwash silicone 14 sleeve will cooperate to close or open the water distributor blade hole 401.

[0077] Furthermore, a backwashing screen 15 is provided at one end of the laminated frame 13 near the drain outlet 2103. The backwashing screen 15 is used to prevent unfiltered water from entering the backwashing channel 1301 of the laminated frame 13 for backwashing, thus achieving the function of backwashing with purified water. In other words, the backwashing screen 15 is used to filter water flow into the backwashing channel 1301. The backwashing channel 1301 is located on the outer periphery of the laminated frame 13 and is connected to the backwashing hole 1302 so that the backwashing water can better... The backwashing proceeds from the inside to the outside of the stacked discs 5. A mesh cover 16 is also provided at one end of the stacked disc frame 13 near the drain outlet 2103. The mesh cover 16 is fastened to the lower end of the stacked disc frame 13 to press the backwash mesh 15 to prevent it from falling off. When the switching component is in the backwashing state, water flows from the first chamber 301 into the interior of the stacked disc frame 13. During this process, in order to prevent impurities from entering the water inlet channel, a backwash mesh 15 is provided at the lower end of the stacked disc frame 13 to filter the backwash water.

[0078] In addition, in order to enable the filter to have a better flushing effect on the disc 5 during backwashing, several backwashing holes 1302 are provided along the axial direction of the outer periphery of the disc skeleton 13, which are connected to the backwashing channel 1301. The axis of the backwashing hole 1302 is tangent to the outer periphery of the disc skeleton 13. When water flows out of the clean water chamber 602 through the backwashing hole 1302, it not only increases the water pressure when it is sprayed, but also makes the disc 5 have a tendency to rotate, so that impurities can be better flushed into the original water chamber 601.

[0079] In one possible implementation, an upper seal 8 is provided at the end of the filter bottle 6 facing away from the valve head 1, that is, the upper end of the filter bottle 6. The lower end of the filter bottle 6 is sealed by the valve head 1, while the upper end is sealed by the upper seal 8. Two sealing rings are provided between the upper seal 8 and the filter bottle 6. Furthermore, a pressure gauge 9 is detachably installed on the upper seal 8. The pressure gauge 9 is used to detect the pressure inside the filter bottle 6, so that the user can know the internal pressure status and react in time. In this embodiment, the upper seal 8 is fixed by a fixing member 10. The fixing member 10 is provided on the outer side of the upper end of the filter bottle 6. The fixing member 10 can connect the upper seal 8 and the filter bottle 6.

[0080] Furthermore, a reset member 11 is provided between the upper sealing member 8 and the stacked plate skeleton 13, and an inner cover 12 is provided between the stacked plate skeleton 13 and the reset member 11. The stacked plate 5 is limited to the inner cover 12 and the water distributor 4. That is, the lower end of the reset member 11 is engaged with the inner cover 12, and the upper end abuts against the lower end of the upper sealing member 8. The reset member 11 is specifically a spring, which can be reset downwards after the stacked plate 5 is moved upwards to complete the backwash, open the blade water distribution hole, and restart the filtration function.

[0081] In this embodiment, the stacked pieces 5 on the stacked piece skeleton 13 are restricted between the inner cover 12 and the water distributor 4. The internal thread of the inner cover 12 is connected and fixed to the upper end of the stacked piece skeleton 13. The circumferential edge 1201 of the inner cover 12 abuts against the upper end of the stacked pieces 5. The buckle 702 on the upper side of the inner cover 12 is fastened to the reset piece 11.

[0082] Furthermore, in order to remove impurities from the outer surface of the stacked discs 5 when it rotates under the action of the backwash hole 1302, an outer scraping frame 7 is also fastened to the lower end of the upper seal 8. The outer scraping frame 7 is provided with two scraper strips 701, which are located on the outer periphery of the stacked discs 5. The scraper strips 701 are used to scrape the impurities inside the filter bottle 6. The buckle 702 of the outer scraping frame 7 is fastened to the upper seal 8.

[0083] In one possible implementation, a lower seal 21 is rotatably provided at the lower end of the valve head 1, a drain port 2103 is provided at the axis of the lower seal 21, a valve core assembly 20 is provided inside the lower seal 21, and a movable cover 18 that can move along the axis of the laminated frame 13 is provided between the lower seal 21 and the insert 3. The lower seal 21 is used to drive the movable cover 18 to move when rotating, thereby driving the laminated frame 13 to move.

[0084] Furthermore, a spiral rib 2102 is provided on the upper circumference of the lower seal 21, and a rib 1802 that cooperates with the spiral rib 2102 is provided on the corresponding edge of the movable cover 18. The spiral rib 2102 abuts against the lower side of the rib 1802 so that the movable cover 18 can move along its axial direction. An abutting post 1801 is provided on the upper side of the movable cover 18, and the abutting post 1801 passes through the insert 3 to abut against the lower end of the stacked frame 13.

[0085] In other words, a movable cover 18 and a lower seal 21 are arranged from top to bottom inside the valve head 1. A through hole is provided in the center of the lower seal 21, which serves as the drain outlet 2103. Furthermore, a fan-shaped protrusion 2101 is provided on the upper circumference edge of the lower seal 21. Correspondingly, an annular limiting rib 202 and a limiting point 203 are provided on the inner wall of the insert 3. The fan-shaped protrusion 2101 can be precisely engaged in the gap between the annular limiting rib 202 and the limiting point 203. That is, the gap can be closed through the annular limiting rib 202 and the limiting point 203. The rotation angle of the lower seal 21 is limited; at the same time, two spiral ribs 2102 are provided on the edge of the upper end face of the upper seal 8. Correspondingly, two protruding ribs 1802 are provided on the edge of the movable cover 18 located above the lower seal 21. Meanwhile, the two vertically upward abutting posts 1801 of the movable cover 18 pass through the insert 3 and abut against the lower end of the stacked frame 13. In this way, when the lower seal 21 rotates, the movable cover 18 will move up and down through the cooperation of the spiral ribs 2102 and the protruding ribs 1802, thereby realizing the up and down movement of the stacked frame 13.

[0086] Furthermore, the lower seal 21 is provided with a valve core assembly 20 and a valve stem 17. The upper end of the valve stem 17 is engaged with the bottom end of the insert 3, and the lower end of the valve stem 17 is connected to the upper valve block 2001 of the valve core assembly 20. The lower valve block 2002 of the valve core assembly 20 is fixed to the drain port 2103. The upper valve block 2001 and the lower valve block 2002 can rotate relative to each other to open or close the drain port 2103.

[0087] In this embodiment, during the rotation of the lower seal 21, not only will the movable cover 18 be driven to move axially in the stacked frame 13, but the valve core assembly 20 and the valve stem 17 will also be linked to open or close the drain port 2103. Specifically, the valve core assembly 20 includes a lower valve block 2002 and an upper valve block 2001. The lower valve block 2002 is provided with a through hole communicating with the drain port 2103. At the same time, the lower valve block 2002 is engaged with the lower seal 21, and the two can rotate synchronously. The upper valve block 2001 is fixed to the bottom of the valve stem 17 by the flange 19. The flange 19 fixes the bottom of the valve stem 17, and its outer end threads are engaged with the internal threads of the lower seal 21 for fixing. It also has multiple holes in the middle for the flow of drained water. That is to say, the flange 19 does not... The flow of sewage is affected. The upper section of the valve stem 17 is square, and the lower end of the insert 3 is provided with a square groove 304 that engages with the upper end of the valve stem 17. The lower end of the valve stem 17 is round, and the corresponding flange 19 also has a round hole in the middle. That is to say, when the lower seal 21 rotates, the flange 19 will move up and down relative to the movable cover 18, but the valve stem 17 will not rotate due to the limitation of its square top section. As a result, the upper valve block 2001 fixed at its lower end will not rotate either. However, since the lower valve block 2002 and the lower seal 21 rotate together, the upper valve block 2001 and the lower valve block 2002 will rotate relative to each other, thereby opening the through hole on the lower valve block 2002, that is, opening the sewage outlet 2103.

[0088] In one possible implementation, the lower end of the lower seal 21 is provided with an outer polygonal protrusion 2104, and a knob cover 22 is installed on the outside of the outer polygonal protrusion 2104. The knob cover 22 drives the lower seal 21 to rotate through the outer polygonal protrusion 2104.

[0089] In this embodiment, to facilitate the operator in adjusting the state of the switching components, an outer polygonal protrusion 2104 is provided at the lower end of the lower seal 21. At the same time, a knob cover 22 is fastened to the lower side of the outer polygonal protrusion 2104. Rotating the knob cover 22 can drive the lower seal 21 to rotate, thereby driving the movable cover 18 to move upward and lift the stacked frame 13 to seal the water distribution blade hole 401. At the same time, it drives the lower valve block 2002 of the valve block assembly to rotate, opening the drain port 2103 and entering the backwashing and draining mode. Rotating the knob cover 22 in the opposite direction can reset the stacked frame 13, reopen the water distribution blade hole 401, and close the drain port 2103, thereby restoring the filtration state.

[0090] 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.

[0091] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0092] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A pre-filter with an upper filter bottle, characterized in that, include: A filter bottle (6) has an internal cavity containing a filter assembly. The filter assembly divides the cavity into a raw water cavity (601) located outside the filter assembly and a purified water cavity (602) located inside the filter assembly. The filter channel of the filter assembly connects the raw water cavity (601) and the purified water cavity (602). The filter assembly is used to filter water that passes through the filter channel. The valve head (1) is threaded to one end of the filter bottle (6). The valve head (1) is provided with an inlet (101), an outlet (102) and a drain (2103). A switching component is disposed inside the valve head (1). The switching component has a filtration state and a backwashing state. When the switching component is in the filtration state, the drain port (2103) is closed, and the inlet (101) is connected to the raw water chamber (601), and the outlet (102) is connected to the clean water chamber (602). When the switching component is in the backwashing state, the outlet (102) is closed, and the inlet (101) is connected to the raw water chamber (601) through the backwashing channel (1301) provided by the filtration component, and the drain port (2103) is connected to the raw water chamber (601).

2. The pre-filter with upper filter bottle according to claim 1, characterized in that, The valve head (1) is fitted with a lead separator (2) on its inner wall. The lead separator (2) is welded to the inner wall of the valve head (1) by injection molding. The lead separator (2) is used to prevent the precipitation of heavy metals.

3. The pre-filter with upper filter bottle according to claim 2, characterized in that, The switching assembly includes an insert (3) and a distributor (4). The insert (3) is fixedly disposed inside the lead separator (2), and the distributor (4) is disposed inside the valve head (1) and located at the upper end of the insert (3). The insert (3) is provided with a first cavity (301) and a second cavity (302). The first cavity (301) is connected to the inlet (101), and the second cavity (302) is connected to the outlet (102). The water distributor (4) is provided with a water-dividing blade hole (401) and a first through hole (402). The first through hole (402) is used to insert the filter assembly, and the filter assembly can move axially along the first through hole (402) to close the water-dividing blade hole (401) and connect the first cavity (301) and the backwash channel (1301), or to open the water-dividing blade hole (401) and connect the first cavity (301) and the raw water cavity (601). The inner wall of the lead separator (2) is provided with a guide rib (201), and the outer wall of the insert (3) is provided with a guide groove (303) that cooperates with the guide rib (201).

4. The pre-filter with upper filter bottle according to claim 3, characterized in that, The filter assembly includes a stacked frame (13) and several stacked plates (5) movably fitted around the outer periphery of the stacked frame (13). The stacked frame (13) is a cylindrical structure and its sidewall is provided with a through-type water passage (1304). The backwash channel (1301) is provided on the outer sidewall of the stacked frame (13). There are gaps between the several stacked plates (5) to form the filter channel. The water distributor (4) is fitted on the end of the stacked frame (13) near the drain port (2103). The end of the stacked frame (13) near the drain port (2103) is provided with an annular edge (1303). A backwash silicone (14) sleeve is fitted on the annular edge (1303). The annular edge (1303) is used to close or open the water distributor blade hole (401) when the filter assembly moves axially.

5. The pre-filter with upper filter bottle according to claim 4, characterized in that, A backwashing net (15) is provided at one end of the stacked frame (13) near the drain outlet (2103). The backwashing net (15) is used to prevent unfiltered water from entering the backwashing channel (1301) for backwashing. A net cover (16) is also provided at one end of the stacked frame (13) near the drain outlet (2103). The net cover (16) is fastened to the lower end of the stacked frame (13) to press the backwashing net (15) to prevent it from falling off. The outer periphery of the laminated skeleton (13) is provided with a plurality of backwash holes (1302) that communicate with the backwash channel (1301) along its axial direction, and the axis of the backwash holes (1302) is tangent to the outer periphery of the laminated skeleton (13).

6. The pre-filter with upper filter bottle according to claim 5, characterized in that, The filter bottle (6) is provided with an upper sealing element (8) at the end opposite to the valve head (1). A sealing ring is provided between the upper sealing element (8) and the filter bottle (6). A pressure gauge (9) is detachably installed on the upper sealing element (8). The pressure gauge (9) is used to detect the pressure inside the filter bottle (6). A fixing element (10) is provided on the outer side of the upper end of the filter bottle (6). The fixing element (10) is used to fix the upper sealing element (8) to the end of the filter bottle (6). A reset member (11) is provided between the upper sealing member (8) and the stacked frame (13), and an inner cover (12) is provided between the stacked frame (13) and the reset member (11), and the stacked piece (5) is limited to being located between the inner cover (12) and the water distributor (4); The lower end of the upper sealing member (8) is fastened with an outer scraping frame (7), and the outer scraping frame (7) is provided with a scraper (701). The scraper (701) is located on the outer periphery of the stacked discs (5), and the scraper (701) is used to scrape and wash the impurities inside the filter bottle (6).

7. The pre-filter with upper filter bottle according to claim 5, characterized in that, The lower end of the valve head (1) is rotatably provided with a lower seal (21), the drain port (2103) is located at the axis of the lower seal (21), the valve core assembly (20) is provided inside the lower seal (21), and a movable cover (18) that can move along the axis of the stacked frame (13) is provided between the lower seal (21) and the insert (3). The lower seal (21) is used to drive the movable cover (18) to move when rotating, so as to drive the stacked frame (13) to move.

8. The pre-filter with upper filter bottle according to claim 7, characterized in that, The lower seal (21) is provided with a spiral rib (2102) on its upper circumference. The corresponding edge of the movable cover (18) is provided with a rib (1802) that cooperates with the spiral rib (2102). The spiral rib (2102) abuts against the lower side of the rib (1802) to make the movable cover (18) move along its axial direction. The upper side of the movable cover (18) is provided with an abutting post (1801). The abutting post (1801) passes through the insert (3) to abut against the lower end of the stacked skeleton (13).

9. The pre-filter with upper filter bottle according to claim 8, characterized in that, The lower sealing member (21) is provided with a valve core assembly (20) and a valve stem (17). The upper end of the valve stem (17) is engaged with the bottom end of the inner insert (3). The lower end of the valve stem (17) is connected to the upper valve block (2001) of the valve core assembly (20). The lower valve block (2002) of the valve core assembly (20) is fixed to the drain port (2103). The upper valve block (2001) and the lower valve block (2002) can rotate relative to each other to open or close the drain port (2103).

10. The pre-filter with upper filter bottle according to claim 9, characterized in that, The lower end of the lower seal (21) is provided with an outer polygonal protrusion (2104), and a knob cover (22) is installed on the outside of the outer polygonal protrusion (2104). The knob cover (22) drives the lower seal (21) to rotate through the outer polygonal protrusion (2104).

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