Rotary arm backwashing filter assembly

Abstract

The utility model relates to the technical field of filter assemblies, in particular to a rotary arm backwashing filter assembly which comprises a support, a rotary arm is rotatably connected to the support, a through hole is formed in the rotary arm, a filter element is fixedly installed in the through hole, a motor is arranged on the support and the rotary arm, the motor is fixedly connected to the interior of the support, and a filter element is fixedly installed in the filter element. An output shaft of the motor is fixedly connected with the rotating arm, and a protection assembly is arranged on the rotating arm; according to the utility model, the direction of the filter element can be temporarily adjusted by utilizing the rotatable rotating arm, so that impurities attached to the filter element can be thoroughly removed in the backwashing process instead of being temporarily washed down from the filter element.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter assembly technical field, concretely is a kind of rotary arm backwash filter assembly. BACKGROUND

[0002] Backwash filter is a kind of water treatment technology, mainly used to remove suspended solids, particulate impurities etc. in water. It removes the dirt accumulated on the surface and inside of filter core by backwashing filter core (such as sand, activated carbon, quartz sand etc.), so as to restore the filtering capacity of filter medium.

[0003] During filtering, the two ends of the filter assembly can be regarded as sewage end and clean water end respectively. During normal filtering, the impurities filtered out will remain in the sewage end. Although the conventional backwash filter can wash the impurities attached to the surface of filter core, the impurities will only temporarily fall off from the filter core during backwashing, but the impurities remain in the sewage end, because the total amount of impurities in the sewage end does not decrease. Therefore, shortly after washing, the impurities will attach to the filter core at a faster speed, causing the filter core to be blocked again. Therefore, a new type of backwash filter assembly is needed to remove the impurities on the filter core. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides a rotary arm backwash filter assembly, which can temporarily adjust the direction of filter core by using rotatable rotary arm, so that the impurities attached to the filter core can be completely removed during backwashing, instead of temporarily washing off from the filter core.

[0005] The technical solution for achieving the purpose of the utility model is as follows: a rotary arm backwash filter assembly, comprising a support, a rotary arm rotatably connected to the support, a through hole formed in the rotary arm, a filter core fixedly installed inside the through hole, a motor provided on the support and the rotary arm, the motor fixedly connected to the inside of the support, the output shaft of the motor fixedly connected to the rotary arm, and a protection assembly provided on the rotary arm.

[0006] Preferably, the protection assembly comprises a threaded ring and a protective cover, the threaded ring is threadedly connected to the inside of the through hole, and the protective cover is arranged on the threaded ring.

[0007] Preferably, the protection assembly further comprises a plurality of filter holes, and the filter holes are formed in the protective cover.

[0008] Preferably, the protection assembly further comprises a fixing rod and a spring, three fixing rods are fixedly connected to the protective cover, and three springs are fixedly connected to the fixing rods.

[0009] Preferably, the protection assembly further comprises three grooves, three of which are formed in the threaded ring, and three fixed rods are respectively slidably connected to the interiors of the three grooves, and the ends of the three springs are respectively fixedly connected to the inner walls of the three grooves.

[0010] Preferably, the surface of the protection cover is spherical, and the surface of the rotating arm is spherical, and the edge of the protection cover is attached to the edge of the rotating arm.

[0011] Compared with the prior art, the utility model has the following remarkable advantages:

[0012] Firstly, when the filter assembly is normally filtering, sewage passes through the filter core to complete the filtering, so that the purified water is discharged from the other side of the filter core, and because the aperture of the filter hole is small, the water pressure pushes the entire protection cover when the purified water is discharged from the filter core, so that the protection cover is pushed away from the threaded ring, at this time, the spring is stretched, and the purified water can be discharged from the gap between the protection cover and the threaded ring, so that the discharge of the purified water is not affected.

[0013] Secondly, when the filter core needs to be back-flushed and cleaned, the motor can be started, the motor drives the entire rotating arm to rotate, so that the protection cover rotates, and the protection cover is rotated to the sewage side, at this time, the sewage passes through the filter hole, and large-particle impurities are intercepted by the filter hole, and because the aperture of the filter hole is small, the speed of the sewage passing through the filter hole is slow, so that the flow rate of the water flow can be increased at this time, one end of the filter core, which originally has impurities attached thereto, faces the purified water end, the purified water end of the purified water and the filter assembly are temporarily disconnected, and the impurities on the filter core are washed away by the water flow, so that the water with impurities can be discharged as waste water.

[0014] Thirdly, in the utility model, when the filter core is washed clean, the motor can be started again to rotate the rotating arm, and the direction of the filter core and the protection cover is adjusted again, in this process, the protection cover is completely attached to the surface of the support when rotating, so that the large-particle impurities attached to the surface of the protection cover are scraped off by the support and cannot move to the purified water end, at this time, the filter assembly restores the normal filtering function, the sewage is filtered, and the purified water is discharged from the side of the protection cover, the small-particle impurities previously entering the protection cover are washed away at this time, after the small-particle impurities in the protection cover are cleaned, the purified water end of the purified water and the filter assembly are connected, and the filtering operation can be performed again. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be explained further in combination with the drawings and embodiments:

[0016] Figure 1 is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 is the structure explosion map of the utility model;

[0018] Figure 3 It is a cross-sectional view of the internal structure of the utility model;

[0019] Figure 4 This utility model Figure 3 An enlarged view of the structure of part A is shown.

[0020] Description of reference numerals:

[0021] 1. Bracket; 2. Rotating arm; 3. Through hole; 4. Filter element; 5. Motor; 6. Protective assembly; 61. Threaded ring; 62. Protective cover; 63. Filter hole; 64. Fixing rod; 65. Spring; 66. Groove. DETAILED DESCRIPTION

[0022] The following is a detailed description of the present invention, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides a rotary arm backwash filter assembly through improvement. The technical solution of the utility model is:

[0024] like Figures 1-4 As shown, a rotating arm backwash filter assembly includes a bracket 1, a rotating arm 2 is rotatably connected to the bracket 1, a through hole 3 is opened on the rotating arm 2, a filter element 4 is fixedly installed inside the through hole 3, a motor 5 is provided on the bracket 1 and the rotating arm 2, the motor 5 is fixedly connected to the inside of the bracket 1, the output shaft of the motor 5 is fixedly connected to the rotating arm 2, and a protective assembly 6 is provided on the rotating arm 2.

[0025] Furthermore, the protective assembly 6 includes a threaded ring 61 and a protective cover 62 . The threaded ring 61 is threadedly connected to the inside of the through hole 3 , and the protective cover 62 is arranged on the threaded ring 61 .

[0026] Furthermore, the protective component 6 also includes filter holes 63. A plurality of filter holes 63 are provided on the protective cover 62. The filter holes 63 have a relatively small aperture and are used to intercept large particles of impurities during the backwashing process.

[0027] Furthermore, the protection assembly 6 also includes fixing rods 64 and springs 65 . The three fixing rods 64 are fixedly connected to the protection cover 62 , and the three springs 65 are fixedly connected to the fixing rods 64 .

[0028] Further, the protection assembly 6 further comprises grooves 66, three grooves 66 are arranged on the threaded ring 61, three fixed rods 64 are respectively slidably connected to the interiors of the three grooves 66, and the ends of the three springs 65 are respectively fixedly connected to the inner walls of the three grooves 66; when normal filtering, the clean water will impact the protection cover 62, so that the spring 65 is stretched, the protection cover 62 is separated from the threaded ring 61, and the clean water will flow out from the gap between the protection cover 62 and the threaded ring 61, so as not to affect the speed of the clean water flow; when backwashing the filter element 4, the flow direction of the water flow is unchanged, but the direction of the protection cover 62 is changed, so that the protection cover 62 is tightly buckled on the surface of the threaded ring 61 at this time, and the filtering hole 63 can intercept large-particle impurities at this time.

[0029] Further, the surface of the protection cover 62 is spherical, the surface of the rotating arm 2 is spherical, the edge of the protection cover 62 is attached to the edge of the rotating arm 2, and the surface of the protection cover 62 is attached to the surface of the rotating arm 2, so that a complete spherical surface is formed when the surface of the protection cover 62 is attached to the surface of the rotating arm 2, and the protection cover 62 can be attached to the support 1 when the protection cover 62 rotates with the rotating arm 2.

[0030] Specific working method is: when the filtering assembly normally filters, the sewage will pass through the filter element 4 to complete the filtering, so that the clean water is discharged from the other side of the filter element 4; because the aperture of the filtering hole 63 is small, the water pressure will push the entire protection cover 62 when the clean water is discharged from the filter element 4, so that the protection cover 62 is pushed away from the threaded ring 61, and the spring 65 is stretched at this time, and the clean water can be discharged from the gap between the protection cover 62 and the threaded ring 61, so as not to affect the clean water flow; when backwashing and cleaning the filter element 4, the motor 5 can be started, the motor 5 drives the entire rotating arm 2 to rotate, so that the protection cover 62 rotates with the rotating arm 2, and the protection cover 62 is rotated to the sewage side at this time, so that the sewage will pass through the filtering hole 63, and the large-particle impurities are intercepted by the filtering hole 63; because the aperture of the filtering hole 63 is small, the speed of the sewage passing through the filtering hole 63 is slow at this time, so that the flow rate of the water flow can be increased at this time; at this time, the end of the filter element 4 originally attached with impurities is directed to the clean water end, the clean water end of the clean water and the filtering assembly are temporarily disconnected, and the impurities on the filter element 4 will be washed by the water flow, so that the water with impurities is discharged as waste water; after the filter element 4 is washed clean, the motor 5 can be started again to rotate the rotating arm 2, and the direction of the filter element 4 and the protection cover 62 is adjusted again; in this process, the protection cover 62 is completely attached to the surface of the support 1 when the protection cover 62 rotates, so that the large-particle impurities attached to the surface of the protection cover 62 are scraped off by the support 1 and will not move to the clean water end; at this time, the filtering assembly restores the normal filtering function, the sewage is filtered, and the clean water is discharged from the side of the protection cover 62, the small-particle impurities previously entering the protection cover 62 are washed away at this time, and the clean water end of the clean water and the filtering assembly are connected after the small-particle impurities in the protection cover 62 are cleaned, so that the filtering operation can be performed again.

[0031] The technical means disclosed by the utility model scheme are not limited to the technical means disclosed by the above technical means, and also include technical schemes composed of equivalent replacement of the above technical features. The unfinished matters of the utility model belong to the common knowledge of the person skilled in the art.

Claims

1. A swing arm backflush filter assembly comprising a support (1) characterised in that: The support (1) is rotatably connected with a rotating arm (2), a through hole (3) is formed in the rotating arm (2), a filter core (4) is fixedly installed in the through hole (3), a motor (5) is arranged on the support (1) and the rotating arm (2), the motor (5) is fixedly connected to the inside of the support (1), the output shaft of the motor (5) is fixedly connected with the rotating arm (2), and a protection assembly (6) is arranged on the rotating arm (2); the protection assembly (6) comprises a threaded ring (61) and a protection cover (62), the threaded ring (61) is threadedly connected to the inside of the through hole (3), and the protection cover (62) is arranged on the threaded ring (61); the protection assembly (6) further comprises filter holes (63), and a plurality of filter holes (63) are formed in the protection cover (62).

2. A swing arm backflush filter assembly according to claim 1, wherein: The protection assembly (6) further comprises fixing rods (64) and springs (65), three fixing rods (64) are fixedly connected to the protection cover (62), and three springs (65) are fixedly connected to the fixing rods (64).

3. A swing arm backflush filter assembly according to claim 2, wherein: The protection assembly (6) further comprises grooves (66), three grooves (66) are formed in the threaded ring (61), three fixing rods (64) are slidably connected to the inside of the three grooves (66), and the ends of the three springs (65) are fixedly connected with the inner walls of the three grooves (66).

4. A swing arm backflush filter assembly according to claim 1 wherein: The surface of the protection cover (62) is spherical, the surface of the rotating arm (2) is spherical, and the edge of the protection cover (62) is attached to the edge of the rotating arm (2).

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