Laminated backwashing prefilter

Abstract

The utility model discloses a laminated backwashing pre-filter which comprises a water inlet and outlet assembly provided with a water inlet pipe and a water outlet pipe, a filter bottle connected with the water inlet and outlet assembly, a pollution discharge assembly arranged below the filter bottle, a laminated framework arranged in the filter bottle and clamped on the filter bottle, and a backwashing framework arranged in the laminated framework, laminations are arranged on the outer side of the lamination framework. The lamination framework is provided with a first filtering water through hole and a backwashing water spraying hole, the backwashing framework is provided with a second filtering water through hole and a backwashing flow channel, the second filtering water through hole is staggered or communicated with the first filtering water through hole in an up-down moving manner, and the backwashing flow channel is communicated with the backwashing water spraying hole. The problems that in the prior art, a small-hole framework structure is small in flow, and a large-hole framework structure cannot be washed cleanly are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification equipment technical field, especially a kind of laminated backwashing prefilter. BACKGROUND

[0002] The skeleton of existing laminated prefilter has two main structures: one skeleton only has small holes, and high-pressure water can wash the laminated sheet during backwashing due to the pressure of small holes; one is that the skeleton only has large holes, and the flow rate is large during filtering due to the large flow channel.

[0003] The structure of the skeleton of laminated prefilter is small hole: to meet the washing effect during backwashing, the size of small hole is small, which leads to small flow rate during filtering, and the laminated prefilter with small hole skeleton needs more laminated sheets with large size under the condition of same flow rate. During backwashing, unfiltered water directly enters the skeleton, water is ejected outward, and particles and impurities in water are stuck in small hole, which leads to uneven washing after small hole is blocked, and reduces washing effect.

[0004] The structure of the skeleton of laminated prefilter is large hole: large hole ensures the flow rate of product, but it is difficult to produce water spray with large pressure during backwashing due to large water area of large hole, and the washing effect of laminated sheet is poor, and laminated sheet is not washed clean. CONTENT OF UTILITY MODEL

[0005] The utility model aims at solving the above technical problems, and provides a laminated backwashing prefilter, which solves the problems of small flow rate of small hole skeleton structure and poor washing of large hole skeleton structure in the prior art.

[0006] The utility model solves the above technical problems by the technical scheme: a laminated backwashing prefilter, which comprises an inlet and outlet assembly provided with an inlet pipe and an outlet pipe, a filter bottle connected with the inlet and outlet assembly, a blowdown assembly arranged below the filter bottle, a laminated skeleton arranged in the filter bottle and clamped on the filter bottle, and a backwashing skeleton arranged in the laminated skeleton; and the outer side of the laminated skeleton is provided with laminated sheets.

[0007] The laminated skeleton is provided with first filtering water holes and backwashing water spray holes, the backwashing skeleton is provided with second filtering water holes and a backwashing flow channel, the second filtering water holes are movable up and down and staggered with or communicated with the first filtering water holes, and the backwashing flow channel is communicated with the backwashing water spray holes.

[0008] The backwashing skeleton is provided with a stretching mechanism, the backwashing skeleton is provided with a backwashing lower cover below, the stretching mechanism passes through the laminated skeleton and is connected with the backwashing lower cover, and the backwashing lower cover moves up and down to move the stretching mechanism and the backwashing skeleton up and down, so as to switch between filtering state and backwashing state.

[0009] In the filtering state, the first filtering water passage and the second filtering water passage are communicated, the first filtering water passage and the second filtering water passage are large holes, a large flow of water flow filtering can be formed, and the backwashing flow channel and the backwashing water jet hole are communicated to increase the filtering flow; in the backwashing state, the second filtering water passage moves downward, the second filtering water passage is staggered with the first filtering water passage, the backwashing flow channel and the backwashing water jet hole are communicated, the backwashing water jet hole is a small hole, and when the same water flow passes, the hole diameter is small to form a water flow with a large pressure to jet wash the laminated sheet, so that the laminated sheet is cleaned; in the backwashing, the laminated sheet skeleton is clamped on the filter bottle, the backwashing lower cover moves downward to drive the backwashing skeleton and the stretching mechanism to move downward, the stretching mechanism is connected with the backwashing lower cover through the laminated sheet skeleton, and the backwashing skeleton moves downward to be flush with the bottom of the laminated sheet skeleton.

[0010] Preferably, a filtering space is arranged between the laminated sheet and the filter bottle, a water distribution piece is arranged on the laminated sheet skeleton, a filtering water inlet hole is arranged on the water distribution piece, the filtering water inlet hole and the filtering space form a filtering flow channel, a step and a backwashing water passage arranged above the step are arranged on the backwashing skeleton, the step moves upward and downward with the backwashing skeleton to close the filtering water inlet hole and thus close the filtering flow channel and open the backwashing water passage to form a backwashing state. In the filtering state, the backwashing water passage is closed, water flows from the water inlet pipe into the filtering space through the filtering water inlet hole; in the backwashing state, the step closes the filtering water inlet hole, the backwashing water passage is opened, and water flows into the backwashing skeleton from the backwashing water passage to clean the laminated sheet.

[0011] Preferably, the water distribution piece includes a water distribution outer ring and a water distribution inner ring, the laminated sheet skeleton is sleeved in the water distribution inner ring, a plurality of inclined plates are arranged between the water distribution outer ring and the water distribution inner ring, and the filtering water inlet hole is formed between two adjacent inclined plates. Through the arrangement of the inclined plates, the water flow hits the inclined plates to rotate the water distribution piece, and the rotating water flow washes the large particles attached to the laminated sheet to the bottom of the filter bottle.

[0012] Preferably, the stretching mechanism includes a connecting shaft and a spring arranged on the outer side of the connecting shaft, the backwashing lower cover is provided with a lower cover through hole, and the connecting shaft passes through the lower cover through hole and is connected with the backwashing lower cover.

[0013] Preferably, a conical frame is arranged on the backwashing skeleton, the upper end of the connecting shaft is connected with the conical frame, one end of the spring is in contact with the conical frame of the backwashing skeleton, and the other end of the spring is in contact with the lower flat surface of the laminated sheet skeleton. Through the arrangement of the spring, the stretching mechanism can movably arrange the backwashing lower cover below the backwashing skeleton.

[0014] As preferred, the backwashing lower cover is provided with a blowdown hole, the blowdown assembly comprises a blowdown shaft and a blowdown knob capable of rotating to open or close the blowdown shaft, and the blowdown hole is communicated with the blowdown shaft. The blowdown shaft is closed in the filtering state, and the blowdown shaft is opened by rotating the blowdown knob in the backwashing state, so that the blowdown hole is communicated with the blowdown shaft, a pressure difference is formed between the upper and lower parts of the backwashing lower cover, and the backwashing lower cover is pressed downward when the lower pressure is greater than the elastic force of the spring, so that the backwashing lower cover drives the connecting shaft and the backwashing framework to move downward, the backwashing framework moves downward to close the filtering water hole and open the backwashing water hole, and the filtering state and the backwashing state are switched.

[0015] As preferred, the backwashing lower cover is provided with a laminated fixing ring, the backwashing framework and the laminated framework are arranged in the laminated fixing ring, and the laminated sheets are arranged on the laminated fixing ring. When the backwashing lower cover moves downward, the laminated fixing ring moves downward with the backwashing lower cover, the laminated fixing ring moves downward to release the laminated sheets, and gaps are formed between the laminated sheets, so that the gaps between the laminated sheets can be conveniently cleaned.

[0016] As preferred, the backwashing water hole is provided with a filter screen on the outer side. In the backwashing process, water is coarsely filtered through the filter screen, the backwashing water hole is not blocked, and subsequent disassembly and cleaning are not needed, so that the backwashing effect is better and the backwashing is cleaner.

[0017] As preferred, the step is provided with a backwashing upper cover, the backwashing upper cover comprises a cover part and support plates arranged in a circumferential distribution on the outer side of the cover part, the cover part is provided with a backwashing water inlet hole communicated with the water inlet pipe, and the support plates are arranged on the water distribution outer ring. Through the arrangement of the backwashing upper cover, the backwashing water hole is blocked by the cover part in the filtering state, and the backwashing water hole is moved out of the cover part and opened when the backwashing water hole moves downward.

[0018] As preferred, the water inlet and outlet assembly comprises a machine head, the machine head is provided with a water inlet pipe and a water outlet pipe, the machine head is connected with the filter bottle, and the water inlet pipe and the water outlet pipe are arranged above the backwashing upper cover.

[0019] The utility model has the beneficial effects that:

[0020] 1. The utility model solves the problems of small flow of the small-hole framework structure and unclean washing of the large-hole framework structure in the prior art.

[0021] 2. In the backwashing process, water is coarsely filtered through the filter screen, the backwashing water hole is not blocked, subsequent disassembly and cleaning are not needed, and the backwashing effect is better and the backwashing is cleaner.

[0022] 3. The utility model utilizes the backwashing lower cover and the stretching mechanism to realize the switching between the filtering state and the backwashing state through the pressure difference between the inner and outer parts of the backwashing lower cover in the backwashing process, the product is stable and reliable, and the service life of the product can be effectively prolonged. DRAWINGS

[0023] Figure 1This is a schematic diagram of the structure in the filtering state.

[0024] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0025] Figure 3 This is a schematic diagram of the structure in the backwashing state.

[0026] Figure 4 yes Figure 3 A cross-sectional view along the BB direction.

[0027] Figure 5 This is a schematic diagram of the stacked skeleton structure.

[0028] Figure 6 This is a schematic diagram of the backwash frame with a filter.

[0029] Figure 7 This is a schematic diagram of the backwash frame without a filter.

[0030] Figure 8 This is a structural diagram of the backwash frame, tensioning mechanism, and backwash bottom cover.

[0031] Figure 9 This is a schematic diagram of the tensioning mechanism and the backwash cover.

[0032] Figure 10 This is a schematic diagram of the backwash cover.

[0033] Figure 11 This is a schematic diagram of the backwash cover.

[0034] Figure 12 This is a schematic diagram of the water distribution component.

[0035] In the diagram: 1. Machine head; 11. Inlet pipe; 12. Outlet pipe; 2. Filter bottle; 3. Disc frame; 31. First filter water passage; 32. Backwash spray hole; 4. Backwash frame; 41. Second filter water passage; 42. Backwash channel; 43. Step; 44. Backwash water passage; 45. Conical frame; 5. Discs; 6. Tensioning mechanism; 61. Coupling; 62. Spring; 7. Backwash lower... 71. Cover, 72. Drain hole, 73. Stacked plate fixing ring, 8. Water distribution component, 81. Filter water inlet hole, 82. Water distribution outer ring, 83. Water distribution inner ring, 84. Inclined plate, 9. Backwash top cover, 91. Cover part, 911. Backwash water inlet hole, 92. Support plate, 10. Filter space, 100. Drain component, 101. Drain shaft, 102. Drain knob, 200. Filter screen. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] As Figures 1-12 shown, the utility model discloses a laminated backwashing prefilter, including the water inlet and outlet assembly being equipped with water inlet pipe 11 and water outlet pipe 12, the filter bottle 2 being connected with the water inlet and outlet assembly, the blowdown assembly 100 being equipped below the filter bottle 2, the filter bottle 2 is equipped with the laminated skeleton 3 being clamped on the filter bottle 2, the backwashing skeleton 4 being equipped in the laminated skeleton 3, the laminated skeleton 3 outside is equipped with the laminated sheet 5;

[0038] The laminated skeleton 3 is equipped with first filter water through hole 31 and backwashing water spray hole 32, the backwashing skeleton 4 is equipped with second filter water through hole 41 and backwashing flow channel 42, the second filter water through hole 41 can be moved up and down with first filter water through hole 31 staggered or communicated, and the backwashing flow channel 42 is communicated with backwashing water spray hole 32.

[0039] The backwashing skeleton 4 is equipped with stretching mechanism 6, the backwashing lower cover 7 is equipped below the backwashing skeleton 4, the stretching mechanism 6 passes through the laminated skeleton 3 and is connected with the backwashing lower cover 7, and the backwashing lower cover 7 can move up and down with the stretching mechanism 6 and the backwashing skeleton 4 moving up and down to switch the filtering state and the backwashing state.

[0040] The laminated sheet 5 and the filter bottle 2 are equipped with filter space 10, the laminated skeleton 3 is equipped with water distribution piece 8, the water distribution piece 8 is equipped with filter water inlet hole 81, the filter water inlet hole 81 and filter space 10 form filter flow channel, the backwashing skeleton 4 is equipped with step 43 and backwashing water through hole 44 being equipped above the step 43, and the step 43 can move up and down with the backwashing skeleton 4 with filter water inlet hole 81 being closed to close filter flow channel and open backwashing water through hole 44 to form backwashing state.

[0041] The water distribution piece 8 includes water distribution outer ring 82 and water distribution inner ring 83, the laminated skeleton 3 is sleeved in the water distribution inner ring 83, a plurality of inclined plates 84 are arranged between the water distribution outer ring 82 and the water distribution inner ring 83, and the filter water inlet hole 81 is formed between two adjacent inclined plates 84.

[0042] The stretching mechanism 6 includes connecting shaft 61 and spring 62 being arranged on the outer side of the connecting shaft 61, the backwashing lower cover 7 is equipped with lower cover through hole 71, and the connecting shaft 61 passes through the lower cover through hole 71 and is connected with the backwashing lower cover 7.

[0043] The backwashing skeleton 4 is equipped with conical frame 45, the upper end of the connecting shaft 61 is connected with the conical frame 45, one end of the spring 62 is in contact with the conical frame 45 of the backwashing skeleton 4, and the other end is in contact with the lower plane of the laminated skeleton 3.

[0044] The backwashing lower cover 7 is equipped with blowdown hole 72, the blowdown assembly 100 includes blowdown shaft 101 and blowdown knob 102 being rotatable to open or close the blowdown shaft 101, and the blowdown hole 72 is communicated with the blowdown shaft 101.

[0045] The backwashing lower cover 7 is provided with a laminated fixing ring 73, the backwashing framework 4 and the laminated framework 3 are arranged in the laminated fixing ring 73, and the laminated sheet 5 is arranged on the laminated fixing ring 73.

[0046] The backwashing water hole 44 is provided with a filter screen 200 outside.

[0047] The step 43 is provided with a backwashing upper cover 9, the backwashing upper cover 9 comprises a cover part 91 and a support plate 92 arranged around the outer side circumference of the cover part 91, the cover part 91 is provided with a backwashing water inlet hole 911 communicated with the water inlet pipe 11, and the support plate 92 is arranged on the water distribution outer ring 82.

[0048] The water inlet and outlet assembly comprises the head 1, the head 1 is provided with the water inlet pipe 11 and the water outlet pipe 12, the head 1 is connected with the filter bottle 2, and the water inlet pipe 11 and the water outlet pipe 12 are arranged above the backwashing upper cover 9.

[0049] It should be understood that the specific embodiments described herein are merely used to explain the present application, and are not used to limit the present application.

[0050] It should be noted that when an element is referred to as being "fixed to" or "arranged on" another element, it can be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected" to another element, it can be directly connected or indirectly connected to the other element.

[0051] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, the terms "first", "second" are only used for description purpose, and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

Claims

1. A stacked backflush prefilter, characterized by: The utility model provides an improved filter bottle, which comprises a water inlet and outlet assembly provided with a water inlet pipe (11) and a water outlet pipe (12), a filter bottle (2) connected with the water inlet and outlet assembly, a pollution discharge assembly (100) arranged below the filter bottle (2), a laminated skeleton (3) arranged in the filter bottle (2) and clamped on the filter bottle (2), and a backwashing skeleton (4) arranged in the laminated skeleton (3). The laminated skeleton (3) is provided with a first filtering water passage (31) and a backwashing water spraying hole (32), and the backwashing skeleton (4) is provided with a second filtering water passage (41) and a backwashing flow channel (42); the second filtering water passage (41) is movable up and down and is staggered with or communicated with the first filtering water passage (31); and the backwashing flow channel (42) is communicated with the backwashing water spraying hole (32). The backwashing skeleton (4) is provided with a stretching mechanism (6), and the backwashing skeleton (4) is provided with a backwashing lower cover (7) below; the stretching mechanism (6) penetrates through the laminated skeleton (3) and is connected with the backwashing lower cover (7); and the backwashing lower cover (7) is movable up and down to move the stretching mechanism (6) and the backwashing skeleton (4) up and down, so as to switch between a filtering state and a backwashing state.

2. The stacked backflush prefilter of claim 1, wherein: The filter bottle (2) and the laminated skeleton (3) are provided with a filtering space (10) between them; the laminated skeleton (3) is provided with a water distribution member (8); the water distribution member (8) is provided with a filtering water inlet hole (81); the filtering water inlet hole (81) and the filtering space (10) form a filtering flow channel; the backwashing skeleton (4) is provided with a step (43) and a backwashing water passage (44) arranged above the step (43); the step (43) is movable up and down with the backwashing skeleton (4) to close the filtering water inlet hole (81) and thus close the filtering flow channel and open the backwashing water passage (44) to form a backwashing state.

3. The stacked backflush prefilter of claim 2, wherein: The water distribution member (8) comprises a water distribution outer ring (82) and a water distribution inner ring (83); the laminated skeleton (3) is sleeved in the water distribution inner ring (83); a plurality of inclined plates (84) are arranged between the water distribution outer ring (82) and the water distribution inner ring (83); and the filtering water inlet hole (81) is formed between two adjacent inclined plates (84).

4. The stacked backflush prefilter according to claim 1 or 2 or 3, characterized in that: The stretching mechanism (6) comprises a connecting shaft (61) and a spring (62) arranged on the outer side of the connecting shaft (61); the backwashing lower cover (7) is provided with a lower cover through hole (71); and the connecting shaft (61) penetrates through the lower cover through hole (71) and is connected with the backwashing lower cover (7).

5. The stacked backflush prefilter of claim 4, wherein: The backwashing skeleton (4) is provided with a conical frame (45); the upper end of the connecting shaft (61) is connected with the conical frame (45); one end of the spring (62) is in contact with the conical frame (45) of the backwashing skeleton (4); and the other end of the spring (62) is in contact with the lower flat surface of the laminated skeleton (3).

6. The stacked backflush prefilter of claim 4, wherein: The backwashing lower cover (7) is provided with a pollution discharge hole (72); the pollution discharge assembly (100) comprises a pollution discharge shaft (101) and a pollution discharge knob (102) which is rotatable to open or close the pollution discharge shaft (101); and the pollution discharge hole (72) is communicated with the pollution discharge shaft (101).

7. The stacked backflush prefilter according to claim 1 or 2 or 3 or 5 or 6, characterized in that: The backwashing lower cover (7) is provided with a laminated fixing ring (73); the backwashing skeleton (4) and the laminated skeleton (3) are arranged in the laminated fixing ring (73); and the laminated (5) is arranged on the laminated fixing ring (73).

8. The stacked backflush prefilter of claim 7, wherein: The back-flushing water hole (44) is provided with a filter screen (200) outside.

9. The stacked backflush prefilter according to claim 3 or 5 or 6 or 8, characterized in that: The step (43) is provided with a back-flushing upper cover (9), the back-flushing upper cover (9) comprises a cover part (91) and a support plate (92) distributed around the outer side circumference of the cover part (91), the cover part (91) is provided with a back-flushing water inlet hole (911) communicated with the water inlet pipe (11), and the support plate (92) is arranged on the water distribution outer ring (82).

10. The stacked backflush prefilter of claim 9, wherein: The water inlet and outlet assembly comprises a head (1), the head (1) is provided with a water inlet pipe (11) and a water outlet pipe (12), the head (1) is connected with the filter bottle (2), and the water inlet pipe (11) and the water outlet pipe (12) are arranged above the back-flushing upper cover (9).

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