Backwashing device of precision filter

Abstract

The utility model discloses a precision filter backwashing device which comprises a filter frame and a filter screen, a backwashing assembly is arranged in the filter frame, and a power assembly is arranged at the top of the filter frame; the backwashing assembly comprises supporting plates fixedly installed at the two ends of the inner wall of the filtering frame, supporting blocks are fixedly installed on one sides of the supporting plates, water spraying heads are rotatably installed between the supporting blocks, first gears are rotatably installed on the front sides of the supporting blocks, a square groove is formed in the top of the filtering frame, and a square plate is slidably installed in the square groove. A rack is fixedly installed on one side of each square plate, and a connecting plate is fixedly installed between the square plates. According to the backwashing device, the spraying angle of the water spraying head to the filter screen can be adjusted through the arranged backwashing assembly, so that the situation that dead angles exist in the backwashing process of the water spraying head to the filter screen is prevented, and the backwashing effect of the backwashing device to the filter screen is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, concretely relates to a precision filter backflushing device. BACKGROUND

[0002] Need to use the combination process of high -efficient sedimentation tank and filter to filter sewage, the filter screen is blocked by the suspended solids and impurities in sewage after long -time filtration, so need to use backflushing device to flush the suspended solids and impurities on the filter screen.

[0003] When the backflushing device flushes the filter screen, open the blow-off opening of the filter, start the rotating mechanism and the flushing mechanism, the rotating mechanism drives the rotating shaft to rotate, the rotating shaft drives the water jet head to rotate, the flushing mechanism flows the flushing water into the water jet head through the water pipe, the flushing water sprays from the water jet head to the filter screen, and the suspended solids and impurities are carried out from the blow-off opening by the flushing water.

[0004] Since the water jet head cannot adjust the spray angle, the spray range of the water jet head is limited, which causes dead angles in the backflushing process of the backflushing device to the filter screen, and if multiple water jet heads are used to spray the suspended solids and impurities in the filter screen, the backflushing cost of the filter is increased, and there is an urgent need to design a precision filter backflushing device to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a precision filter backflushing device to solve the above problems in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] Including filter frame and filter screen, be provided with backflushing assembly in the filter frame, the filter frame top is provided with power assembly;

[0008] The backflushing assembly includes support plates fixedly installed at both ends of the inner wall of the filter frame, support blocks are fixedly installed on one side of the support plates, water jet heads are rotatably installed between the support blocks, first gears are rotatably installed on the front side of the support blocks, a square slot is formed in the top of the filter frame, a square plate is slidably installed in the square slot, and a rack is fixedly installed on one side of the square plate.

[0009] The backflushing assembly can adjust the spray angle of the water jet head to the filter screen, thereby preventing dead angles from occurring in the backflushing process of the water jet head to the filter screen, and thereby increasing the backflushing effect of the backflushing device to the filter screen.

[0010] A connecting plate is fixedly installed between the square plates, an electric push rod is fixedly installed on the top of the filter frame, and the connecting plate is fixedly connected with the output end of the electric push rod.

[0011] The notch is arranged between the filter frame and the support plate, a water pipe is arranged in the notch, a variable frequency water pump is fixedly installed on the top of the filter frame, one end of the water pipe is connected with the output end of the variable frequency water pump, the other end of the water pipe is connected with the input end of the water spraying head, and the input end of the variable frequency water pump is provided with a flushing pipe.

[0012] The power assembly comprises a support frame, a motor, a second gear, a third gear, a water inlet ring plate and a first rotating ring, the support frame is fixedly installed on the top of the filter frame, the motor is fixedly installed on one side of the support frame, the second gear is rotatably installed on the top of the filter frame, and the second gear is connected with the output end of the motor.

[0013] The first rotating ring is rotatably installed on the top of the inner wall of the filter frame, a circular groove is formed in the top of the filter frame, the water inlet ring plate is fixedly installed in the circular groove, the third gear is arranged on the outer surface of the water inlet ring plate, and the third gear is connected with the first rotating ring.

[0014] The filter frame is provided with a groove in the bottom, a baffle is clamped in the groove, a second rotating ring is rotatably installed on the top of the baffle, the filter screen is clamped between the first rotating ring and the second rotating ring, first sealing pads are arranged between the first rotating ring, the second rotating ring and the filter screen, second sealing pads are arranged between the baffle and the filter frame, a blowdown pipe is arranged on the bottom of the baffle, a water outlet ring plate is arranged on the front side of the filter frame, a water storage bucket is arranged on one side of the filter frame, the water outlet ring plate is connected with the input end of the water storage bucket, the flushing pipe is connected with the output end of the water storage bucket, and filter plates are arranged on the input end and the output end of the water storage bucket.

[0015] In the above technical scheme, the precision filter backwashing device has the beneficial effects that:

[0016] The backwashing assembly can adjust the spray angle of the water spraying head to the filter screen, so that the dead angle condition in the backwashing process of the water spraying head to the filter screen is prevented, and the backwashing effect of the backwashing device on the filter screen is improved.

[0017] The variable frequency water pump can facilitate the staff to adjust the flushing water pressure according to the actual situation, thereby improving the flexibility of the backwashing device when backwashing the filter screen.

[0018] The power assembly can drive the filter screen to rotate, so that the water spraying head can flush the suspended matters and impurities in the filter screen, thereby improving the backwashing effect of the backwashing device on the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 The flushing device structure schematic view provided by the embodiment of the precision filter backwashing device of the present application.

[0021] Figure 2 The inner wall structure schematic view of the flushing device provided by the embodiment of the precision filter backwashing device of the present application.

[0022] Figure 3 The backwashing assembly structure schematic view provided by the embodiment of the precision filter backwashing device of the present application.

[0023] Figure 4 The power assembly structure schematic view provided by the embodiment of the precision filter backwashing device of the present application.

[0024] 1, filter frame; 2, filter screen; 3, backwashing assembly; 4, power assembly; 5, support plate; 6, support block; 7, water spray head; 8, first gear; 9, square groove; 10, square plate; 11, rack; 12, connecting plate; 13, electric push rod; 14, notch; 15, water pipe; 16, frequency conversion water pump; 17, flushing pipe; 18, support frame; 19, motor; 20, second gear; 21, third gear; 22, water inlet ring plate; 23, first rotating ring; 24, circular groove; 25, groove; 26, baffle; 27, second rotating ring; 28, blowdown pipe; 29, water outlet ring plate. DETAILED DESCRIPTION

[0025] In order to make those skilled in the art better understand the technical scheme of the present application, the present application will be further described in detail with reference to the drawings.

[0026] As shown in Figures 1-4 The embodiment of the present application provides a precision filter backwashing device.

[0027] The precision filter backwashing device comprises a filter frame 1 and a filter screen 2, the filter frame 1 is internally provided with a backwashing assembly 3, and the filter frame 1 is provided with a power assembly 4 at the top;

[0028] The backwashing assembly 3 comprises support plates 5 fixedly installed at both ends of the inner wall of the filter frame 1, support blocks 6 fixedly installed on one side of the support plates 5, water spray heads 7 rotatably installed between the support blocks 6, first gears 8 rotatably installed on the front side of the support blocks 6, a square slot 9 formed in the top of the filter frame 1, a square plate 10 slidably installed in the square slot 9, a rack 11 fixedly installed on one side of the square plate 10, a closing water inlet ring plate 22 and a water outlet ring plate 29, starting a motor 19, an electric push rod 13 and a variable frequency water pump 16, opening a sewage pipe 28, adjusting the washing water pressure of the variable frequency water pump 16 according to actual needs, washing water entering the variable frequency water pump 16 from the water storage bucket through the washing pipe 17, the washing water flowing into the water spray head 7 from the water pipe 15, the washing water being sprayed from the water spray head 7 to the filter screen 2, the electric push rod 13 driving the square plate 10 to move through the connecting plate 12, the square plate 10 driving the first gear 8 to rotate through the rack 11, and the first gear 8 driving the water spray head 7 to rotate, so as to adjust the spray angle of the water spray head 7.

[0029] The backwashing assembly 3 can adjust the spray angle of the water spray head 7 to the filter screen 2, so as to prevent the occurrence of dead angle during the backwashing process of the water spray head 7 to the filter screen 2, thereby increasing the backwashing effect of the backwashing device to the filter screen 2.

[0030] With reference to Figure 2 The square plate 10 of the embodiment is fixedly installed between the connecting plates 12, the filter frame 1 is fixedly installed on the top of the electric push rod 13, and the connecting plate 12 is fixedly connected with the output end of the electric push rod 13.

[0031] The filter frame 1 and the support plate 5 are provided with a notch 14, and the notch 14 is provided with a water pipe 15, the filter frame 1 is fixedly installed on the top of the variable frequency water pump 16, one end of the water pipe 15 is connected with the output end of the variable frequency water pump 16, the other end of the water pipe 15 is connected with the input end of the water spray head 7, and the input end of the variable frequency water pump 16 is provided with a washing pipe 17.

[0032] The variable frequency water pump 16 can facilitate the staff to adjust the washing water pressure according to the actual situation, thereby improving the flexibility of the backwashing device when backwashing the filter screen 2.

[0033] With reference to Figure 4The power assembly 4 of the embodiment comprises a support frame 18, a motor 19, a second gear 20, a third gear 21, a water inlet ring plate 22 and a first rotating ring 23, the support frame 18 is fixedly installed on the top of the filter frame 1, the motor 19 is fixedly installed on one side of the support frame 18, the second gear 20 is rotatably installed on the top of the filter frame 1, the second gear 20 is connected with the output end of the motor 19, the motor 19 rotates through the second gear 20, the third gear 21 and the first rotating ring 23, the first rotating ring 23 drives the filter screen 2 to rotate, the flushing water flushes the suspended matters and impurities on the filter screen 2, and the flushing water carrying the suspended matters and impurities flows out from the blowdown pipe 28.

[0034] The power assembly 4 can drive the filter screen 2 to rotate, so that the water jet head 7 flushes the suspended matters and impurities in the filter screen 2, thereby improving the backwashing effect of the backwashing device on the filter screen 2.

[0035] The first rotating ring 23 is rotatably installed on the top of the inner wall of the filter frame 1, the top of the filter frame 1 is provided with a circular groove 24, the water inlet ring plate 22 is fixedly installed in the circular groove 24, the third gear 21 is arranged on the outer surface of the water inlet ring plate 22, and the third gear 21 is connected with the first rotating ring 23.

[0036] The bottom of the filter frame 1 is provided with a recess 25, the recess 25 is clamped with a baffle 26, the top of the baffle 26 is rotatably installed with a second rotating ring 27, the filter screen 2 is clamped between the first rotating ring 23 and the second rotating ring 27, the first rotating ring 23, the second rotating ring 27 and the filter screen 2 are provided with a first sealing gasket, the baffle 26 and the filter frame 1 are provided with a second sealing gasket, the bottom of the baffle 26 is provided with a blowdown pipe 28, the front side of the filter frame 1 is provided with a water outlet ring plate 29, one side of the filter frame 1 is provided with a water storage barrel, the water outlet ring plate 29 is connected with the input end of the water storage barrel, the flushing pipe 17 is connected with the output end of the water storage barrel, and the input end and the output end of the water storage barrel are both provided with filter plates.

[0037] Working principle: first, the sewage from the water inlet ring plate 22 into the filter screen 2, filter screen 2 on the suspended solids and impurities in the sewage filtration, filtration of water into the filter frame 1, and from the water outlet ring plate 29, filtered water into the water storage bucket, when the suspended solids and impurities on the filter screen 2 for blocking, close the water inlet ring plate 22 and water outlet ring plate 29, start the motor 19, electric push rod 13 and variable frequency water pump 16, open the sewage pipe 28, according to the actual need to adjust the washing water pressure of variable frequency water pump 16, washing water from the water storage bucket through the washing pipe 17 into the variable frequency water pump 16, washing water from the water pipe 15 into the water head 7, washing water from the water head 7 jet to the filter screen 2, electric push rod 13 through the connecting plate 12 driven square plate 10 to move, square plate 10 through the rack 11 driven first gear 8 rotation, the first gear 8 drive water head 7 rotation, so that the jet angle of the water head 7 adjustment, motor 19 through the second gear 20, third gear 21 and the first rotating ring 23 rotation, the first rotating ring 23 drive filter screen 2 rotation, washing water on the filter screen 2 on the suspended solids and impurities for washing, washing water with suspended solids and impurities from the sewage pipe 28.

[0038] The above only describes certain exemplary embodiments of the present application by way of illustration, without doubt, for those skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above description and drawings are illustrative in nature, should not be construed as limiting the scope of the claims of the present application.

Claims

1. A precision filter backwash device comprising a filter frame (1) and a filter screen (2), characterized in that, The filter frame (1) is provided with a backwashing assembly (3), and the top of the filter frame (1) is provided with a power assembly (4); The backwashing assembly (3) comprises support plates (5) fixedly installed at both ends of the inner wall of the filter frame (1), support blocks (6) fixedly installed on one side of the support plates (5), water spray heads (7) rotatably installed between the support blocks (6), first gears (8) rotatably installed on the front side of the support blocks (6), a square slot (9) formed in the top of the filter frame (1), and a square plate (10) slidably installed in the square slot (9), wherein a rack (11) is fixedly installed on one side of the square plate (10).

2. A precision filter backwash apparatus according to claim 1, wherein, The square plate (10) is fixedly installed with a connecting plate (12), the top of the filter frame (1) is fixedly installed with an electric push rod (13), and the connecting plate (12) is fixedly connected with the output end of the electric push rod (13).

3. A precision filter backwash apparatus as defined in claim 1, wherein, The filter frame (1) and the support plate (5) are provided with a notch (14), the notch (14) is provided with a water pipe (15), the top of the filter frame (1) is fixedly installed with a variable frequency water pump (16), one end of the water pipe (15) is connected with the output end of the variable frequency water pump (16), the other end of the water pipe (15) is connected with the input end of the water spray head (7), and the input end of the variable frequency water pump (16) is provided with a flushing pipe (17).

4. A precision filter backwash apparatus as claimed in claim 3, wherein, The power assembly (4) comprises a support frame (18), a motor (19), a second gear (20), a third gear (21), a water inlet ring plate (22) and a first rotating ring (23), the support frame (18) is fixedly installed on the top of the filter frame (1), the motor (19) is fixedly installed on one side of the support frame (18), the second gear (20) is rotatably installed on the top of the filter frame (1), and the second gear (20) is connected with the output end of the motor (19).

5. A precision filter backwash apparatus as defined in claim 4, wherein, The first rotating ring (23) is rotatably installed on the top of the inner wall of the filter frame (1), the top of the filter frame (1) is provided with a circular groove (24), the water inlet ring plate (22) is fixedly installed in the circular groove (24), the third gear (21) is arranged on the outer surface of the water inlet ring plate (22), and the third gear (21) is connected with the first rotating ring (23).

6. A precision filter backwash apparatus as defined in claim 4, wherein, The bottom of the filter frame (1) is provided with a recess (25), the recess (25) is clamped with a baffle (26), the top of the baffle (26) is rotatably installed with a second rotating ring (27), the filter screen (2) is clamped between the first rotating ring (23) and the second rotating ring (27), first sealing pads are arranged between the first rotating ring (23), the second rotating ring (27) and the filter screen (2), second sealing pads are arranged between the baffle (26) and the filter frame (1), a blowdown pipe (28) is arranged on the bottom of the baffle (26), and a water outlet ring plate (29) is arranged on the front side of the filter frame (1).

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