Transverse lamination backwashing prefilter

Abstract

The utility model discloses a transverse lamination backwashing pre-filter, which relates to the technical field of water purification equipment and comprises a filter bottle, a shunting cover, a lamination filter component and a switching component, a water inlet, a water outlet and a drain outlet are respectively formed in two ends of the filter bottle; the shunting cover is mounted at the end part of the filter bottle and is provided with a water flow shunting hole communicated with the water inlet; the lamination filter assembly is arranged in the filter bottle in a penetrating manner and comprises a lamination unit and a backwashing structure which is positioned on the inner side of the lamination unit and is used for backwashing the lamination unit, a raw water cavity is formed between the lamination filter assembly and the filter bottle, a water purification cavity is formed in the lamination filter assembly and is communicated with the raw water cavity, and the water inlet can be communicated with the raw water cavity or the water purification cavity; the raw water cavity is communicated with the drain outlet, and the purified water cavity is communicated with the water outlet; the switching assembly is movably arranged in the lamination filtering assembly in a penetrating manner, and the switching assembly moves in the axial direction of the filtering bottle, so that the state of the filter is changed. Through the arrangement, the filter can be conveniently, quickly and efficiently backwashed.

Description

A transverse stacked disc backwash pre-filter Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a transversely stacked disc backwashing 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, 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 disc pre-filters have simple forward and reverse rinsing functions, but the discs cannot be well dispersed and separated for rinsing. During sewage discharge, many impurities are still pressed between the discs, which does not achieve the purpose of high-efficiency rinsing. In addition, the inner wall is in direct contact with metal, and heavy metals will leach into the water.

[0005] Therefore, how to improve backwashing efficiency is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a transversely stacked disc backwashing pre-filter that can improve backwashing efficiency.

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

[0008] A transverse disc backwash pre-filter includes:

[0009] The filter bottle has an inlet at one end and an outlet and a drain outlet at the other end.

[0010] The diversion cover is installed on the end of the filter bottle near the water inlet. The diversion cover is provided with a water flow diversion hole that communicates with the water inlet.

[0011] A disc filter assembly is installed inside a filter bottle. The disc filter assembly includes a disc unit and a backwashing structure located inside the disc unit for backwashing the disc unit. A raw water chamber is provided between the disc filter assembly and the filter bottle. A clean water chamber is provided inside the disc filter assembly. The raw water chamber and the clean water chamber are connected through the filter channels of the disc unit. The inlet can be connected to either the raw water chamber or the clean water chamber. The raw water chamber is connected to the drain outlet. The clean water chamber is connected to the outlet.

[0012] The switching component is movably installed inside the disc filter assembly. When the switching component moves along the direction of the inlet water flow, it can disconnect the connection between the water flow diversion hole and the raw water chamber and connect the water flow diversion hole and the backwashing structure. When the switching component moves against the direction of the inlet water flow, it can disconnect the connection between the water flow diversion hole and the backwashing structure and connect the water flow diversion hole and the raw water chamber.

[0013] Preferably, the disc filter assembly further includes an outer frame that passes through the inside of the filter bottle. The disc unit includes several discs that are fitted around the outer periphery of the outer frame, with gaps between the discs to form filter channels. A backwashing structure is provided on the outer frame. The backwashing structure includes a backwashing channel arranged along the axial direction of the outer frame and a backwashing hole that is located on the outer periphery of the outer frame and communicates with the backwashing channel. The backwashing hole is located inside the discs, and the axis of the backwashing hole is arranged along the tangent direction of the outer periphery of the outer frame.

[0014] Preferably, the end of the outer frame near the water inlet is provided with a diversion oblique blade hole, which can connect with the water flow diversion hole and the raw water chamber.

[0015] The outer frame is also provided with a long groove for connecting the purified water chamber and the raw water chamber.

[0016] Preferably, a valve head is threadedly connected to the end of the filter bottle away from the inlet. The outlet and drain are both located on the valve head. An insert is embedded in the inner wall of the valve head. A piston is provided at the end of the filter bottle near the valve head. The piston has a drain hole and an outlet hole. The drain hole connects the drain port to the raw water chamber, and the outlet connects the clean water chamber to the outlet.

[0017] Preferably, the switching assembly includes a switching element, a transmission element, and a return spring. The switching element is provided with a first water inlet and a second water inlet. The water flow diversion hole can communicate with the backwash channel through the first water inlet and the second water inlet. The end of the switching element away from the first water inlet is detachably connected to the transmission element. The transmission element is connected to a piston so that the piston drives the switching element to move. The return spring is provided between the switching element and the annular rib of the outer frame for resetting the switching element.

[0018] Preferably, the switching component is also provided with an annular flange, and a silicone sleeve is provided around the outer periphery of the annular flange. The annular flange can close the flow diversion oblique blade hole, and a filter screen is laid on the inner wall of the first water inlet hole.

[0019] Preferably, the transmission component includes a movably engaging claw in a long slot, the claw having several through holes, and an engaging portion at the end of the claw for engaging with an engaging groove on the piston to connect the transmission component and the piston. The engaging portion has an engaging hole in the middle, which engages with an engaging protrusion in the engaging groove.

[0020] Preferably, the diverter cover is provided with a cap, which is sleeved on the end of the switching member near the first water inlet, and the cap can close or open the first water inlet.

[0021] The diversion cover is also equipped with three clips, which are used to engage with the clip holes at the end of the outer frame to connect the diversion cover and the outer frame.

[0022] Preferably, the water inlet is provided with a water inlet assembly, which includes: a fastener connected to the filter bottle and a sealing element threadedly connected to the fastener.

[0023] The diversion cover is also provided with raised ribs for pressing against the seal.

[0024] Preferably, both the valve head and the end of the fastener are connected to a heat fusion joint via a first nut;

[0025] The drain outlet is equipped with a ball valve for controlling its opening and closing. The ball valve is connected to the valve head via a snap ring, and a lead separator is installed on the inner wall of the valve head between the insert and the ball valve.

[0026] Compared to the aforementioned background technology, the present invention provides a transverse stacked disc backwashing pre-filter, comprising: a filter bottle, a diverter cover, a stacked disc filter assembly, and a switching assembly; one end of the filter bottle is provided with an inlet, and the other end is provided with an outlet and a drain outlet; the diverter cover is installed at the end of the filter bottle near the inlet, and the diverter cover is provided with a water flow diversion hole communicating with the inlet; the stacked disc filter assembly is disposed inside the filter bottle, and the stacked disc filter assembly includes a stacked disc unit and a backwashing structure located inside the stacked disc unit for backwashing the stacked disc unit; a space is provided between the stacked disc filter assembly and the filter bottle. The raw water chamber and the purified water chamber are located within the disc filter assembly. The raw water chamber and the purified water chamber are connected through the filter channels of the disc unit. The inlet can connect to either the raw water chamber or the purified water chamber. The raw water chamber is connected to the drain outlet, and the purified water chamber is connected to the outlet. The switching component is movably installed inside the disc filter assembly. The switching component moves along the direction of the inlet water flow and can disconnect the connection between the water diversion hole and the raw water chamber while connecting the water diversion hole and the backwashing structure. The switching component moves against the direction of the inlet water flow and can disconnect the connection between the water diversion hole and the backwashing structure while connecting the water diversion hole and the raw water chamber.

[0027] In this embodiment, the filter bottle has an inlet and an outlet at its two ends, and a drain outlet is provided at one end of the outlet. In addition, a diverter cover, a disc filter assembly, and a switching assembly are provided inside the filter bottle. The disc filter assembly is used to filter the water entering from the inlet. After being filtered by the disc filter assembly, the water flows out from the outlet. The drain outlet is opened when the disc filter assembly needs to be backwashed, and the outlet is closed at the same time. At this time, the water entering through the inlet will backwash the disc filter assembly to wash away the impurities it has filtered and discharge it from the drain outlet.

[0028] Specifically, the disc filter assembly and the inner wall of the filter bottle form a raw water chamber, while the interior of the disc filter assembly is a purified water chamber. The raw water chamber can be connected to the drain outlet, while the purified water chamber is connected to the outlet. A movable switching component is installed inside the disc filter assembly. This switching component can move in the direction of the inlet water flow or against the inlet water flow. When the switching component moves to the left, i.e., against the inlet water flow, it closes the drain outlet, and the water entering from the inlet flows through the water diversion hole into the raw water chamber. Then, it is filtered by the disc filter assembly and enters the purified water chamber, before being discharged from the outlet. If the switching component moves in the direction of the inlet water flow, it opens the drain outlet and closes the channel connecting the water diversion hole to the raw water chamber. The water flows through the water diversion hole into the backwashing structure in the purified water chamber, where it washes the disc unit. Impurities washed out enter the raw water chamber and are discharged from the drain outlet.

[0029] In other words, in this embodiment, the filter has two states: a filtration state and a backwashing state. When in the filtration state, water flows through the water diversion hole into the raw water chamber, then through the disc filter assembly, and finally into the clean water chamber before being discharged from the drain. When in the backwashing state, water flows through the water diversion hole into the backwashing structure located in the clean water chamber. The backwashing structure washes the disc unit, flushing impurities into the raw water chamber. The water then continues to flow to the drain and is discharged. This effectively removes the impurities accumulated in the filter channels of the disc unit. This configuration allows for convenient, quick, and efficient backwashing of the filter. Attached Figure Description

[0030] 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.

[0031] Figure 1 is a cross-sectional view of the transverse stacked disc backwashing pre-filter structure provided in an embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of the stacked filter assembly and switching assembly structure provided in the embodiment of this utility model;

[0033] Figure 3 is a schematic diagram of the structure from another angle in Figure 2;

[0034] Figure 4 is an exploded view of Figure 2;

[0035] Figure 5 is a diagram showing the water flow direction in the filtration state of the filter provided in the embodiment of this utility model.

[0036] Figure 6 is a diagram showing the water flow direction during backwashing of the filter provided in this embodiment of the present invention.

[0037] Figure 7 is a schematic diagram of the external skeleton structure provided in the embodiment of this utility model;

[0038] Figure 8 is a schematic diagram of the structure of Figure 7 from another angle;

[0039] Figure 9 is a cross-sectional view of Figure 7;

[0040] Figure 10 is a schematic diagram of the diversion cover structure provided in the embodiment of this utility model;

[0041] Figure 11 is a schematic diagram of the structure of Figure 10 from another angle;

[0042] Figure 12 is a schematic diagram of the switching component structure provided in an embodiment of this utility model;

[0043] Figure 13 is a schematic diagram of the transmission component structure provided in an embodiment of this utility model;

[0044] Figure 14 is a schematic diagram of the piston structure provided in an embodiment of the present utility model;

[0045] Figure 15 is a schematic diagram of the valve head structure provided in the embodiment of this utility model.

[0046] in:

[0047] 100-Filter bottle, 110-Inlet, 120-Outlet, 130-Drain outlet, 140-Fastener, 150-Seal, 160-Ball valve, 170-Lead separator;

[0048] 200-Diverter cover, 210-Water flow diversion hole, 220-Sealing cover, 230-Snap fastener, 240-Raised rib;

[0049] 310 - Stacked unit, 320 - Raw water chamber, 330 - Purified water chamber;

[0050] 400-External skeleton, 410-Backwash channel, 420-Backwash hole, 430-Flow divider oblique blade hole, 440-Long groove, 450-Annular rib, 460-Clamping hole;

[0051] 500 - Valve head, 510 - Insert, 520 - First nut, 530 - Thermofusion connector;

[0052] 600-piston, 610-drain hole, 620-water outlet, 630-clamping groove, 640-clamping protrusion;

[0053] 700 - Switching component, 710 - First water inlet, 720 - Second water inlet, 730 - Annular flange;

[0054] 800-Transmission component, 810-Claw, 820-Claw engagement part, 830-Claw engagement hole;

[0055] 900 - Return spring. Detailed Implementation

[0056] 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.

[0057] 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.

[0058] 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.

[0059] The purpose of this invention is to provide a transversely stacked disc backwashing pre-filter that can improve backwashing efficiency.

[0060] It should be noted that in this embodiment, the direction of the arrows in Figures 5 and 6 is used to indicate the direction of water flow.

[0061] To achieve the above objectives, the present invention provides the following technical solution:

[0062] Please refer to Figures 1 to 15. This embodiment provides a transverse disc backwashing pre-filter, including: a filter bottle 100, a diversion cover 200, a disc filter assembly, and a switching assembly; one end of the filter bottle 100 is provided with an inlet 110, and the other end is provided with an outlet 120 and a drain outlet 130; the diversion cover 200 is installed at the end of the filter bottle 100 near the inlet 110, and the diversion cover 200 is provided with a water flow diversion hole 210 communicating with the inlet 110; the disc filter assembly is inserted inside the filter bottle 100, and the disc filter assembly includes a disc unit 310 and a backwashing structure located inside the disc unit 310 for backwashing the disc unit 310; a raw water supply is provided between the disc filter assembly and the filter bottle 100. The filter assembly has a filter chamber 320 and a purified water chamber 330. The raw water chamber 320 and the purified water chamber 330 are connected through the filter channels of the filter unit 310. The inlet 110 can connect to either the raw water chamber 320 or the purified water chamber 330. The raw water chamber 320 is connected to the drain outlet 130, and the purified water chamber 330 is connected to the outlet 120. The switching component is movably installed inside the filter assembly. The switching component can move along the direction of the incoming water flow to disconnect the connection between the water diversion hole 210 and the raw water chamber 320 and connect the water diversion hole 210 and the backwashing structure. The switching component can also move against the direction of the incoming water flow to disconnect the connection between the water diversion hole 210 and the backwashing structure and connect the water diversion hole 210 and the raw water chamber 320.

[0063] In this embodiment, the filter bottle 100 has an inlet 110 and an outlet 120 at its two ends, and a drain outlet 130 is also provided at one end of the outlet 120. Furthermore, the filter bottle 100 is equipped with a diverter cover 200, a disc filter assembly, and a switching assembly. The disc filter assembly filters the water entering through the inlet 110, and the filtered water flows out through the outlet 120. The drain outlet 130 is opened when backwashing of the disc filter assembly is required, simultaneously closing the outlet 120. At this time, the water entering through the inlet 110... Water backwashes the disc filter assembly to remove the filtered impurities and discharges it from the drain port 130. In this embodiment, to facilitate cleaning of the disc assembly and ensure efficient removal of impurities from the filter channels, a backwashing structure is provided on the innermost side of the disc unit 310. The backwashing structure is located inside the clean water chamber 330. During backwashing, the backwashing structure is connected to the water inlet 110, flushing the water in the opposite direction to the flow during filtration. This flushes impurities into the original water chamber 320, making it easier to discharge them from the drain port 130.

[0064] Specifically, the disc filter assembly and the inner wall of the filter bottle 100 form a raw water chamber 320, while the internal space of the disc filter assembly is a purified water chamber 330. The raw water chamber 320 can be connected to the drain outlet 130, while the purified water chamber 330 is connected to the outlet 120. The raw water chamber 320 and the purified water chamber 330 are connected through the filter channels of the disc unit 310. At the same time, a movable switching component is provided inside the disc filter assembly. The switching component can change the state of the filter. In this embodiment, the filter has a filtration state and a backwashing state. The filtration state is the normal filtration of the water, and the water flows from the raw water chamber 320 into the purified water chamber 330. The backwashing state is the backwashing of impurities in the filter channels between the disc components when the outlet 120 is closed and the drain outlet 130 is opened. The switching component can move in the direction of the inlet water flow or against the direction of the inlet water flow. When the switching component moves to the left, that is, against the direction of the inlet water flow, it will close the drain port 130, and the water entering from the inlet 110 will enter the raw water chamber 320 through the water diversion hole 210, and then enter the clean water chamber 330 through the disc filter assembly, and then be discharged from the outlet 120. If the switching component moves in the direction of the inlet water flow, it will open the drain port 130 and close the channel connecting the raw water chamber 320 to the water diversion hole 210. The water will enter the backwashing structure in the clean water chamber 330 through the water diversion hole 210, and the disc unit 310 will be rinsed by the backwashing structure. The impurities rinsed out will enter the raw water chamber 320 and be discharged from the drain port 130.

[0065] In other words, in this embodiment, the filter has two states: a filtration state and a backwashing state. When in the filtration state, water flows through the water diversion hole 210 into the raw water chamber 320, then through the disc filter assembly, and finally into the clean water chamber 330 before being discharged from the drain. When in the backwashing state, water flows through the water diversion hole 210 into the backwashing structure located in the clean water chamber 330. The backwashing structure washes the disc unit 310, causing impurities to be flushed into the raw water chamber 320. At this time, the water continues to flow to the drain outlet 130 and is discharged. This effectively removes the impurities accumulated in the filter channels of the disc unit 310. With this configuration, the filter can be backwashed conveniently, quickly, and efficiently.

[0066] Preferably, the disc filter assembly further includes an outer frame 400 passing through the filter bottle 100. The disc unit 310 includes a plurality of discs fitted around the outer periphery of the outer frame 400, with gaps between the discs to form filter channels. A backwashing structure is provided on the outer frame 400. The backwashing structure includes a backwashing channel 410 arranged along the axial direction of the outer frame 400 and a backwashing hole 420 arranged around the outer periphery of the outer frame 400 and communicating with the backwashing channel 410. The backwashing hole 420 is located inside the discs, and the axis of the backwashing hole 420 is arranged along the tangent direction of the outer periphery of the outer frame 400.

[0067] As shown in Figures 1 to 3 and Figures 7 to 9, the outer frame 400 is fixed inside the filter bottle 100. Several stacked plates are fitted on its outer periphery. The left and right ends of the stacked plates have grooves, which are filter channels. The stacked plates are pressed together to intercept impurities and filter the raw water filter medium. A backwash channel 410 is arranged along its axial direction in the part of the outer frame 400 inside the stacked plate assembly. At the same time, several backwash holes 420 are opened on the outer wall of the backwash channel. That is to say, the left end of the backwash channel 410 is connected to the water inlet 110 in the backwash state. The water will spray out through the backwash holes 420 to rinse the stacked plate assembly. It should be noted that the backwash holes 420 are all inclined holes. This arrangement allows the sprayed water to force the stacked plates to rotate, making it easier to flush impurities between different stacked plates into the raw water chamber 320 and then into the drain outlet 130.

[0068] Preferably, the outer frame 400 is provided with a diversion oblique blade hole 430 at the end near the water inlet 110, which can connect with the water flow diversion hole 210 and the raw water chamber 320; the outer periphery of the outer frame 400 is also provided with a long groove 440 for connecting the purified water chamber 330 and the raw water chamber 320.

[0069] In this embodiment, the diversion oblique blade hole 430 on the outer frame 400 is used to communicate with the water diversion hole 210, that is, with the water inlet 110, when the filter is in the over-filter state, so that the water can enter the raw water chamber 320. The diversion oblique blade hole 430 is blocked by the switching component when the filter is in the backwash state. At the same time, in order to prevent the outer frame 400 from affecting the water flow after it passes through the stacked plate assembly and enters the clean water chamber 330, several large-sized long grooves 440 are provided on the outer periphery of the outer frame 400. The backwash channel 410 and the backwash hole 420 are both located between adjacent long grooves 440.

[0070] Preferably, the end of the filter bottle 100 opposite to the inlet 110 is threadedly connected to a valve head 500. The outlet 120 and the drain outlet 130 are both located on the valve head 500. An insert 510 is embedded in the inner wall of the valve head 500. A piston 600 is provided at the end of the filter bottle 100 near the valve head 500. The piston 600 is provided with a drain hole 610 and an outlet hole 620. The drain hole 610 connects the drain outlet 130 with the raw water chamber 320, and the outlet 120 connects the clean water chamber 330 with the outlet 120.

[0071] In this embodiment, the right end of the filter bottle 100 is provided with an external thread, which can be engaged with the internal thread provided in the valve head 500. The valve head 500 is provided with a water outlet 120 and a drain outlet 130. The water outlet 120 is connected to the clean water chamber 330, while the drain outlet 130 is connected to the raw water chamber 320. Specifically, a movable piston 600 is sleeved on the right end of the outer frame 400. The left side of the piston 600 abuts against the stacked plates. When the piston 600 moves, it will also loosen the stacked plates to facilitate the cleaning of impurities between the stacked plates. The piston 600 has an overall annular structure, with several drain ports 130 on its outer ring. The drain ports 130 are relatively small in size. A circular water outlet 620 is provided in the middle of the piston 600, as shown in Figure 14. In this embodiment, the right end of the piston 600 cooperates with the inner wall of the valve head 500 to isolate the drain ports 130 and the water outlet 120 from each other, so as to prevent the water flow from being contaminated. In addition, in order to prevent heavy metals from the valve head 500 from leaching into the water, an insert 510 is also provided on the inner wall of the valve head 500.

[0072] Preferably, the switching assembly includes a switching element 700, a transmission element 800, and a return spring 900. The switching element 700 is provided with a first water inlet 710 and a second water inlet 720. The water flow diversion hole 210 can communicate with the backwash channel 410 through the first water inlet 710 and the second water inlet 720. The end of the switching element 700 away from the first water inlet 710 is detachably connected to the transmission element 800. The transmission element 800 is connected to the piston 600 so that the piston 600 drives the switching element 700 to move. The return spring 900 is disposed between the switching element 700 and the annular rib 450 of the outer frame 400 for resetting the switching element 700.

[0073] As shown in Figures 12 and 13, the switching component 700 is installed inside the annular receiving portion at the left end of the outer frame 400. It can move along its axis to complete the switching of different states of the filter. The movement of the switching component 700 is driven by the piston 600, and the action is transmitted by the transmission component 800. It should be noted that a return spring 900 is also provided between the switching component 700 and the annular rib 450 in the middle of the outer frame 400, and the return spring 900 has the tendency to drive the switching component 700 to move to the left.

[0074] In the filtration state, the drain port 130 is closed and the outlet 120 is open. At this time, the switching element 700 moves to the left under the force of the return spring 900 until it abuts against the diverter cover 200. In this state, the water flow enters the raw water chamber 320 through the diverter blade hole 430. Since the drain port 130 is closed at this time, the water flow will not flow from the drain hole 610 of the piston 600 to the drain port 130. The water flow will only enter the clean water chamber 330 through the disc filter and then flow out from the outlet 120. In the backwashing state, the outlet 120 is closed and the drain port 130 is opened. At this time, due to inertia, some water will enter the raw water chamber 320 and flow from the opened drain hole 610 to the drain port 130. However, since the drain hole 610 is small and the outlet 120 is closed, while the pressure of the inlet 110 remains unchanged, the water flow will impact the piston 600. A force is generated to the right, and when this force is greater than the force of the return spring 900, it will drive the transmission component 800 to move to the right, which in turn will drive the switching component 700 to move to the right. When the switching component 700 moves to the right, it will change the path of the water flow. During the rightward movement, the piston 600 will also relax the stacked blades, which will further facilitate the backwashing of the stacked blades. That is, the switching component 700 will cut off the diversion inclined blade hole 430, and at the same time, the water flow will be introduced into the original water chamber 320 through the first water inlet hole 710 and the second water inlet hole 720. In this embodiment, the second water inlet hole 720 will be close to the inlet of the backwash channel 410 of the outer frame 400, which can ensure the efficiency of water entry. In this way, the water flow will be introduced into the backwash channel 410, and then sprayed out from the backwash, flushing the impurities between the stacked blades to the original water chamber 320, and then discharged from the drain hole 610 to the drain outlet 130.

[0075] Preferably, the switching component 700 is also provided with an annular flange 730, the annular flange 730 is fitted with a silicone sleeve on its outer periphery, the annular flange 730 can close the diversion oblique blade hole 430, and the inner wall of the first water inlet hole 710 is lined with a filter screen.

[0076] Understandably, the annular flange 730 of the switching component 700 can block the diversion vane hole 430 during backwashing, and a silicone sleeve is also fitted on its outer periphery to increase the sealing performance. In this way, when the switching component 700 moves to the right, the annular flange 730 will fit into the diversion vane hole 430, thereby achieving a sealing effect. In addition, in order to prevent impurities from entering the inlet 110 from the first inlet hole 710 during backwashing and causing water pollution, a stainless steel filter screen is also laid on the inner wall of the first inlet hole 710.

[0077] Preferably, the transmission component 800 includes a claw 810 that is movably engaged in the elongated groove 440. The claw 810 has several through holes, and the end of the claw 810 has an engagement portion 820 for engaging with the engagement groove 630 provided on the piston 600 to connect the transmission component 800 and the piston 600. The engagement portion 820 has an engagement hole 830 in the middle, which can engage with the engagement protrusion 640 provided in the engagement groove 630.

[0078] As shown in Figures 13 and 14, the left end of the transmission component 800 can be threadedly connected to the right end of the switching component 700. The right end of the transmission component 800 has three evenly spaced claws 810, and a locking part 820 is provided at the end of the claws 810. In this embodiment, the claws 810 cooperate with the long groove 440 in the outer frame 400, that is, the locking part 820 can slide in the long groove 440. At the same time, in order not to affect the back-and-forth flow of water between the original water chamber 320 and the clean water chamber 330, several through holes are also provided on the claws 810.

[0079] In this embodiment, the connection between the transmission component 800 and the piston 600 is achieved through a snap-fit ​​part 820. Specifically, a snap-fit ​​hole 830 is provided in the middle of the snap-fit ​​part 820, and correspondingly, a snap-fit ​​groove 630 that mates with the snap-fit ​​part 820 is provided on the outer ring of the piston 600. The snap-fit ​​part 820 can be snapped into the snap-fit ​​groove 630. Furthermore, a snap-fit ​​protrusion 640 is provided in the snap-fit ​​groove 630. When the snap-fit ​​part 820 mates with the snap-fit ​​groove 630, the snap-fit ​​protrusion 640 also snaps into the snap-fit ​​hole 830, thereby strengthening the connection between the two.

[0080] Preferably, the diversion cover 200 is provided with a cap 220, which is sleeved on the end of the switching member 700 near the first water inlet 710, and the cap 220 can close or open the first water inlet 710; the diversion cover 200 is also provided with three buckles 230, which are used to engage with the buckle holes 460 at the end of the outer frame 400 to connect the diversion cover 200 and the outer frame 400.

[0081] As shown in Figures 10 and 11, a cover 220 is provided in the middle of the diversion cover 200. In this embodiment, the cover 220 can be fitted onto the left end of the switching member 700. When the switching member 700 moves to the left until it abuts the inner wall of the cover 220, the cover 220 will also close the first water inlet 710 of the switching member 700. Only when the switching member 700 moves to the right will the water inlet 110 be connected to the first water inlet 710. This ensures that during filtration, the water flow will not directly enter the clean water chamber 330 through the water diversion hole 210, thus ensuring the purity of the water during filtration. At the same time, in order to facilitate the connection between the diversion cover 200 and the outer frame 400, three evenly distributed buckles 230 are provided on its right side. These buckles 230 can be engaged with the buckle hole 460 provided on the left end of the outer frame 400.

[0082] In this embodiment, the water inlet 110 is provided with a water inlet assembly, which includes a fastener 140 connected to the filter bottle 100 and a seal 150 threadedly connected to the fastener 140. In addition, in order to further stabilize the installation of the seal 150, the left end of the diversion cover 200 is also provided with a rib 240 for pressing against the seal 150.

[0083] In addition, it should be noted that in this embodiment, sealing gaskets are installed at the joints of different components in the filter to prevent water leakage during filtration or backwashing.

[0084] In this embodiment, the valve head and the end of the fastener are both connected to a heat fusion joint via a first nut. The heat fusion joint can be connected to an inlet pipe or an outlet pipe. The drain outlet is also equipped with a ball valve for controlling its opening and closing. The ball valve is connected to the valve head via a snap ring. In this embodiment, the ball valve can be opened and closed by rotating the valve stem. When the ball valve is closed, it is in the filtering state. When the ball valve is open, it is in the backwashing state. A lead separator is provided on the inner wall of the valve head between the insert and the ball valve.

[0085] 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.

[0086] 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.

[0087] 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 transversely stacked disc backwashing pre-filter, characterized in that, include: A filter bottle (100) has an inlet (110) at one end and an outlet (120) and a drain (130) at the other end; a diversion cover (200) is installed on the end of the filter bottle (100) near the inlet (110), and the diversion cover (200) has a water flow diversion hole (210) communicating with the inlet (110); a disc filter assembly is installed inside the filter bottle (100), the disc filter assembly includes a disc unit (310) and a backwashing structure located inside the disc unit (310) for backwashing the disc unit (310), a raw water chamber (320) is provided between the disc filter assembly and the filter bottle (100), and a clean water chamber (330) is provided inside the disc filter assembly, the raw water chamber (320) and the clean water chamber (330) are connected. 330) The inlet (110) is connected to the raw water chamber (320) or the purified water chamber (330) through the filter channel of the stacked plate unit (310). The raw water chamber (320) is connected to the drain (130), and the purified water chamber (330) is connected to the outlet (120). The switching component is movably installed inside the stacked plate filter component. The switching component moves along the direction of the inlet water flow and can disconnect the connection between the water flow diversion hole (210) and the raw water chamber (320) and connect the water flow diversion hole (210) and the backwashing structure. The switching component moves along the direction of the reverse inlet water flow and can disconnect the connection between the water flow diversion hole (210) and the backwashing structure and connect the water flow diversion hole (210) and the raw water chamber (320).

2. The transverse disc backwashing pre-filter according to claim 1, characterized in that, The disc filter assembly further includes an outer frame (400) passing through the filter bottle (100). The disc unit (310) includes a plurality of discs fitted around the outer periphery of the outer frame (400). There are gaps between the discs to form the filter channels. The backwashing structure is disposed on the outer frame (400). The backwashing structure includes a backwashing channel (410) arranged along the axial direction of the outer frame (400) and a backwashing hole (420) disposed around the outer periphery of the outer frame (400) and communicating with the backwashing channel (410). The backwashing hole (420) is located inside the discs, and the axis of the backwashing hole (420) is arranged along the tangent direction of the outer periphery of the outer frame (400).

3. The transverse disc backwashing pre-filter according to claim 2, characterized in that, The outer frame (400) is provided with a diversion oblique blade hole (430) at the end near the water inlet (110), and the diversion oblique blade hole (430) can connect with the water flow diversion hole (210) and the raw water chamber (320); the outer periphery of the outer frame (400) is also provided with a long groove (440) for connecting the purified water chamber (330) and the raw water chamber (320).

4. The transverse disc backwashing pre-filter according to claim 3, characterized in that, The filter bottle (100) is threadedly connected to a valve head (500) at the end opposite to the inlet (110). The outlet (120) and the drain (130) are both located on the valve head (500). An insert (510) is embedded in the inner wall of the valve head (500). A piston (600) is provided at the end of the filter bottle (100) near the valve head (500). The piston (600) is provided with a drain hole (610) and an outlet hole (620). The drain hole (610) connects the drain (130) with the raw water chamber (320). The outlet (120) connects the purified water chamber (330) with the outlet (120).

5. The transverse disc backwashing pre-filter according to claim 4, characterized in that, The switching assembly includes a switching element (700), a transmission element (800), and a return spring (900). The switching element (700) is provided with a first water inlet (710) and a second water inlet (720). The water flow diversion hole (210) can communicate with the backwash channel (410) through the first water inlet (710) and the second water inlet (720). The end of the switching element (700) away from the first water inlet (710) is detachably connected to the transmission element (800). The transmission element (800) is connected to the piston (600) so that the piston (600) drives the switching element (700) to move. The return spring (900) is disposed between the switching element (700) and the annular rib (450) of the outer frame (400) for resetting the switching element (700).

6. The transverse disc backwash pre-filter according to claim 5, characterized in that, The switching component (700) is also provided with an annular flange (730), and a silicone sleeve is provided around the annular flange (730). The annular flange (730) can close the flow divider oblique blade hole (430), and a filter screen is laid on the inner wall of the first water inlet hole (710).

7. The transverse disc backwashing pre-filter according to claim 5, characterized in that, The transmission component (800) includes a claw (810) that is movably engaged in the long groove (440). The claw (810) has several through holes. The end of the claw (810) is provided with a engagement part (820). The engagement part (820) is used to engage with the engagement groove (630) provided on the piston (600) to connect the transmission component (800) and the piston (600). The engagement part (820) has an engagement hole (830) in the middle. The engagement hole (830) can engage with the engagement protrusion (640) provided in the engagement groove (630).

8. The transverse disc backwashing pre-filter according to claim 5, characterized in that, The diversion cover (200) is provided with a cap (220), which is sleeved on the end of the switching member (700) near the first water inlet (710), and the cap (220) can close or open the first water inlet (710); the diversion cover (200) is also provided with three buckles (230), which are used to engage with the buckle holes (460) at the end of the outer frame (400) to connect the diversion cover (200) and the outer frame (400).

9. The transverse disc backwashing pre-filter according to claim 8, characterized in that, The inlet (110) is provided with an inlet assembly, which includes: a fastener (140) connected to the filter bottle (100) and a seal (150) threadedly connected to the fastener (140); the diverter cover (200) is also provided with a rib (240) for pressing against the seal (150).

10. The transverse disc backwashing pre-filter according to claim 9, characterized in that, The valve head (500) and the end of the seal (150) are both connected to a heat fusion joint (530) by a first nut (520); the drain port (130) is provided with a ball valve (160) for controlling its opening and closing, the ball valve (160) is connected to the valve head (500) by a snap ring, and a lead separator (170) is provided on the inner wall of the valve head (500) and between the insert (510) and the ball valve (160).

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