Filter disc backwashing device

Abstract

The utility model relates to the technical field of filter disc backwashing, in particular to a filter disc backwashing device which comprises a filter cartridge, a top cover and a bottom cover are arranged at the top and the bottom of the filter cartridge respectively, a filter disc is arranged in the filter cartridge in a sliding mode, and two sliding grooves are symmetrically formed in the positions, close to the filter disc, of the inner side wall of the filter cartridge. A first elastic supporting and limiting assembly used for elastically supporting and limiting the filter disc is arranged in each sliding groove, the top cover is slidably sleeved with a movable shaft, and a plurality of scraping and pressing rods are fixedly connected to the outer side wall, close to the bottom of the movable shaft, of the movable shaft; the movable shaft is rotationally sleeved with a second elastic supporting and limiting assembly used for conducting elastic supporting and limiting on the movable shaft. The filter disc is reasonable in structural design, convenient to operate and capable of effectively cleaning filter residues firmly attached to the filter disc.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter disc backwash technical field, concretely is a filter disc backwash device. BACKGROUND

[0002] The filter disc filter is a water treatment equipment that intercepts filter residue in filtrate, and the filter disc is one of the most important components in the filter, and the performance directly affects the filtering effect of the filter, with the filtering, the filter disc surface will block and adhere to the filter residue, and the filter residue will affect the subsequent filtering effect, so it is necessary to use the backwash device to backwash the filter residue on the filter disc surface.

[0003] As the patent publication No. CN222489178U of China, a kind of external backflush filter, including shell body, water inlet is opened in the upper of shell body side wall, water outlet is opened in the lower, filter device is arranged in the inside of shell body, water inlet connects filter device, filter device includes inner shell body located in the inside of shell body, the outer side wall of inner shell body is suspended in the inner cavity of shell body upper side through support.The utility model, when needing to backflush filter screen, first close water inlet valve, then close water outlet valve, then open backflush valve on backflush pipe, and the clean water of flushing enters the inside of shell body through backflush pipe, at this time, the water body of flushing is reversed and flushed into the inside of inner shell body from the inside of shell body, so as to flush down the impurities on filter screen, then open motor drives stirring shaft, and the rotation of leaf improves the flow rate of water body, and better the impurities are cleaned, and the waste water after flushing is discharged from the inside of inner shell body through waste water pipe, and backflush is completed.

[0004] But the above-mentioned published patent document can only backwash filter disc, and the firm filter residue adhered to filter disc is difficult to clean, so that backwash cleaning effect is poor. UTILITY MODEL CONTENTS

[0005] The utility model solves the main technical problem to provide a kind of filter disc backwash device with reasonable structure design, it is convenient to operate, and the filter residue adhered to filter disc can be effectively cleaned.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] A kind of filter disc backwash device, including filter cartridge, top and bottom of filter cartridge are provided with top cover and bottom cover respectively, filter disc is slidably arranged in filter cartridge, two slide grooves are symmetrically opened on the inner side wall of filter cartridge and close to filter disc position, first elastic support limiting component for elastically supporting and limiting filter disc is arranged in each slide groove, movable shaft is slidably sleeved on top cover, a plurality of scraping rods are fixedly connected on the outer side wall of movable shaft close to the bottom of movable shaft, second elastic support limiting component for elastically supporting and limiting movable shaft is rotatably sleeved on movable shaft.

[0008] The utility model discloses the further optimization of above-mentioned technical scheme is as follows:

[0009] The first elastic support limiting component includes a first vertical shaft fixedly arranged in the sliding groove, and a sliding block is sleeved on the first vertical shaft, and one end of the sliding block is fixedly connected with the filter disc.

[0010] Further optimization: two first springs are symmetrically arranged on the first vertical shaft and located on both sides of the sliding block, and two ends of the first spring are connected with the sliding block and the inner wall of the sliding groove respectively.

[0011] Further optimization: the second elastic support limiting component includes a fixed ring fixedly sleeved on the movable shaft, and a rotating ring is rotatably arranged on the top of the movable shaft and located outside the movable shaft, and the fixed ring and the rotating ring are arranged in an upper-lower corresponding mode.

[0012] Further optimization: the rotating ring is fixedly connected with at least two second vertical shafts at the top, and the top of each second vertical shaft extends above the fixed ring.

[0013] Further optimization: a second spring is sleeved on the second vertical shaft, and two ends of the second spring are connected with the rotating ring and the fixed ring respectively.

[0014] Further optimization: the outer wall of the filter cartridge is communicated with a first Z-shaped pipe and a second Z-shaped pipe at positions close to the upper and lower sides of the filter disc respectively, and a first electromagnetic valve and a second electromagnetic valve are arranged on the first Z-shaped pipe and the second Z-shaped pipe respectively.

[0015] Further optimization: the top end of the movable shaft is fixedly installed with a hand wheel.

[0016] Further optimization: a sealing ring is arranged between the movable shaft and the top cover.

[0017] The utility model discloses the above-mentioned technical scheme, when backwashing, pressing movable shaft pushes filter disc and moves down, and synchronous rotation of scraping lever scrapes off the surface of filter disc, which is different from the backwashing means of traditional water flow impact only, and the device is assisted by mechanical action, efficiently and comprehensively cleans the impurities of filter disc, greatly shortens backwashing time, and simultaneously, the first elastic support limiting component in the sliding groove of the inner side wall of the filter cartridge makes filter disc vibrate when moving down, loosens stubborn filter residue, cooperates with the scraping lever, effectively cleans the impurities of firm adhesion, restores the filtering performance of filter disc, and improves the overall filtering quality.

[0018] The utility model is further illustrated in connection with the drawings and examples. DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 The overall structural schematic diagram of the embodiment of the present application;

[0021] Figure 2 The cross-sectional view of the filter cartridge in the embodiment of the present application;

[0022] Figure 3 The structural schematic diagram of the top cover in the embodiment of the present application;

[0023] Figure 4 The enlarged view of A in the embodiment of the present application; Figure 2 The enlarged view of B in the embodiment of the present application.

[0024] Figure 5 The enlarged view of B in the embodiment of the present application. Figure 3

[0025] In the figure: 1-filter cartridge; 2-top cover; 3-bottom cover; 4-filter disc; 5-sliding groove; 6-first elastic support limiting assembly; 61-first vertical shaft; 62-sliding block; 63-first spring; 7-movable shaft; 8-scraping rod; 9-second elastic support limiting assembly; 91-fixing ring; 92-rotating ring; 93-second vertical shaft; 94-second spring; 10-first Z-shaped pipe; 11-second Z-shaped pipe; 12-first electromagnetic valve; 13-second electromagnetic valve; 14-hand wheel; 15-liquid inlet pipe; 16-liquid outlet pipe; 17-leg. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0027] As Figures 1-5 ​As shown, a filter disc backwashing device, comprising a filter cylinder 1, the top and bottom of the filter cylinder 1 are respectively provided with a top cover 2 and a bottom cover 3, a filter disc 4 is slidably arranged in the filter cylinder 1, two sliding grooves 5 are symmetrically arranged on the inner side wall of the filter cylinder 1 and close to the position of the filter disc 4, a first elastic supporting and limiting assembly 6 for elastically supporting and limiting the filter disc 4 is arranged in each sliding groove 5, a movable shaft 7 is slidably sleeved on the top cover 2, a plurality of scraping rods 8 are fixedly connected to the outer side wall of the movable shaft 7 close to the bottom of the movable shaft 7, and a second elastic supporting and limiting assembly 9 for elastically supporting and limiting the movable shaft 7 is rotatably sleeved on the movable shaft 7.

[0028] In this way, during backwashing, the movable shaft 7 is pressed to push the filter disc 4 downward, and the scraping rods 8 are synchronously rotated to scrape the surface of the filter disc 4. Unlike the traditional backwashing method relying only on water flow impact, the device is assisted by mechanical action to efficiently and comprehensively clean the impurities on the filter disc 4, greatly shortening the backwashing time. At the same time, the first elastic supporting and limiting assembly 6 in the sliding groove 5 of the inner side wall of the filter cylinder 1 causes the filter disc 4 to vibrate when it moves downward, loosening stubborn filter residues, and cooperating with the scraping rods 8 to effectively clean the firmly adhered impurities, restoring the filtering performance of the filter disc 4 and improving the overall filtering quality.

[0029] The first elastic supporting assembly comprises a first vertical shaft 61 vertically fixedly arranged in the sliding groove 5, and a sliding block 62 slidably sleeved on the first vertical shaft 61, one end of the sliding block 62 being fixedly connected with the filter disc 4.

[0030] Two first springs 63 are symmetrically arranged on the first vertical shaft 61 on both sides of the sliding block 62, and the two ends of the first springs 63 are respectively connected with the sliding block 62 and the inner wall of the sliding groove 5.

[0031] In this way, first, during backwashing, the movable shaft 7 pushes the filter disc 4 downward, the sliding block 62 slides along the first vertical shaft 61, causing the two first springs 63 to compress or stretch, and the filter disc 4 to vibrate, thereby effectively loosening the impurities on the surface of the filter disc 4, assisting the scraping rods 8 in cleaning, improving the backwashing effect and restoring the performance of the filter disc 4.

[0032] Secondly, under different working conditions, the first spring 63 can also automatically adjust the elastic force according to the pressure on the filter disc 4, ensuring stable vibration of the filter disc 4, maintaining good backwashing effect, and enhancing the adaptability of the device.

[0033] The second elastic supporting and limiting assembly 9 comprises a fixed ring 91 fixedly sleeved on the movable shaft 7, and a rotating ring 92 rotatably arranged on the top of the movable shaft 7 outside, and the fixed ring 91 and the rotating ring 92 are arranged in an upper-lower corresponding manner.

[0034] The rotating ring 92 is fixedly connected with at least two second vertical shafts 93 at the top, and each second vertical shaft 93 extends above the fixed ring 91.

[0035] The second vertical shaft 93 is sleeved with a second spring 94, and the two ends of the second spring 94 are connected with the rotating ring 92 and the fixed ring 91 respectively.

[0036] In this way, first, when the movable shaft 7 is pressed to push the filter disc 4 downward, the fixed ring 91 moves downward with the movable shaft 7, and the second spring 94 is squeezed, and the elastic deformation of the second spring 94 generates a counterforce of the fixed ring 91 upward, thereby buffering the pressing force of the movable shaft 7, avoiding damage to the filter disc 4 and related parts due to excessive pressure, and ensuring that the whole backwashing process is stable and gentle.

[0037] Secondly, in terms of adapting to different working conditions, in the face of different flow and pressure of the liquid to be treated, the second spring 94 can automatically adjust the elastic supporting force according to the change of the pressure of the movable shaft 7.

[0038] The outer side wall of the filter cartridge 1 is connected with a first Z-shaped pipe 10 and a second Z-shaped pipe 11 near the upper and lower sides of the filter disc 4, and the first Z-shaped pipe 10 and the second Z-shaped pipe 11 are respectively provided with a first electromagnetic valve 12 and a second electromagnetic valve 13.

[0039] As shown in Figure 1 and Figure 3 The top end of the movable shaft 7 is fixedly installed with a hand wheel 14.

[0040] In this way, first, the hand wheel 14 provides a convenient and comfortable force point, so that the rotation and downward pressure of the movable shaft 7 can be controlled more labor-saving and accurately when the hand wheel 14 is rotated, and the cleaning frequency, intensity and downward displacement of the filter disc 4 can be easily adjusted when the backwashing is frequent, thereby reducing the labor intensity and improving the work efficiency.

[0041] Secondly, the operator can finely adjust the action of the movable shaft 7 according to the clogging degree of the filter disc 4, that is, the more impurities, the greater the rotation amplitude of the hand wheel 14, and the less the impurities, the finer the adjustment, so as to avoid excessive cleaning damage to the filter disc 4.

[0042] As shown in Figure 5 A sealing ring is arranged between the movable shaft 7 and the top cover 2.

[0043] In this way, first, the sealing ring effectively prevents liquid and gas from leaking from the gap, maintains the stability of the pressure in the filter cartridge 1, ensures the liquid to flow along the predetermined path, guarantees the filtering and backwashing effect, and prevents the leakage of backwashing liquid to reduce the cleaning efficiency.

[0044] Secondly, it can prevent external impurities and dust from entering, reduce the wear between the movable shaft 7 and the top cover 2, prolong the service life of the equipment, and the protective effect is more prominent in harsh dusty environments.

[0045] Thirdly, it reduces the shaking of the movable shaft 7 when sliding, makes the action of the movable shaft 7 stable, guarantees the accurate and consecutive cleaning action of the scraping rod 8, improves the backwashing effect, and avoids the influence of uneven scraping on the cleaning quality of the filter disc 4.

[0046] As shown in Figure 1 The top cover 2 is fixedly connected with a liquid inlet pipe 15, and the bottom cover 3 is fixedly connected with a liquid outlet pipe 16. The liquid inlet pipe 15 and the liquid outlet pipe 16 are provided with valves (not shown in the figure).

[0047] In this way, the liquid inlet pipe 15 is installed on the top cover 2, so that the liquid to be filtered can flow smoothly from top to bottom into the filter cartridge 1 by gravity or external pressure, uniformly cover the filter disc 4, and fully exert the filtering effect of the filter disc 4. At the same time, the arrangement of the liquid outlet pipe 16 enables the filtered liquid to be discharged in time, avoiding accumulation in the filter cartridge 1 and maintaining the efficiency and stability of the filtering process.

[0048] As shown in Figure 1 The outer side wall of the filter cartridge 1 near the bottom thereof is fixedly installed with four supporting legs 17 at equal intervals, and the bottom of each supporting leg 17 is fixedly installed with an anti-skid pad.

[0049] In this way, firstly, the multiple supporting legs 17 uniformly distribute the gravity inside the filter cartridge 1, reducing the risk of tipping due to unstable center of gravity. Whether the equipment is running or placed on uneven ground, the filter cartridge 1 can be ensured to stand stably, thereby ensuring the filtering and backwashing work.

[0050] Secondly, the anti-skid pads can increase the friction between the supporting legs 17 and the ground, preventing the filter cartridge 1 from moving or sliding, avoiding damage to the connected pipeline, and maintaining the continuity of operation.

[0051] Thirdly, the supporting legs 17 separate the filter cartridge 1 from the ground, reducing the erosion of the bottom of the filter cartridge 1 by ground moisture and corrosive substances. In chemical and sewage treatment scenarios, the service life of the filter cartridge 1 can be extended, and the maintenance cost can be reduced. At the same time, it is convenient for workers to inspect, clean and maintain the bottom of the filter cartridge 1 and the liquid outlet pipe 16.

[0052] Working principle: during backwashing, the first electromagnetic valve 12 and the second electromagnetic valve 13 are opened, and the backwashing liquid flows from the second Z-shaped pipe 11 near the bottom of the filter cartridge 1. Since the filter disc 4 is located between the first Z-shaped pipe 10 and the second Z-shaped pipe 11, the backwashing liquid reversely flushes the filter disc 4, carries the impurities out of the filter cartridge 1 from the first Z-shaped pipe 10 near the top of the filter cartridge 1, and completes the backwashing process.

[0053] During the flushing process of the backwashing liquid, the hand wheel 14 is pressed, and the movable shaft 7 starts to slide downward under the drive of the hand wheel 14. During the downward sliding of the movable shaft 7, the fixed ring 91 sleeved thereon moves downward, the fixed ring 91 presses the second spring 94 downward, the second spring 94 is compressed to generate an upward elastic force, which buffers the pressing force of the movable shaft 7, ensuring the stability and gentleness of the backwashing process.

[0054] The movable shaft 7 continues to move down until it contacts and pushes the filter disc 4 to move down. When the filter disc 4 moves, the sliding block 62 fixedly connected with the filter disc 4 slides on the first vertical shaft 61. In the sliding process, the first spring 63 on both sides of the first vertical shaft 61 is compressed or stretched. Due to the elastic deformation of the spring, the filter disc 4 vibrates, which can loosen the impurities adhered to the surface of the filter disc 4.

[0055] At the same time when the movable shaft 7 slides down, the operator continuously rotates the hand wheel 14 to drive the movable shaft 7 to rotate. The rotation of the movable shaft 7 drives the plurality of scraping rods 8 fixed to the outer side wall of the bottom of the movable shaft 7 to rotate. In the rotating process, the scraping rods 8 continuously scrape the surface of the filter disc 4. In cooperation with the vibration of the filter disc 4, the scraping rods 8 loosen and remove the filter residue firmly adhered to the surface of the filter disc 4.

[0056] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or equivalently replace some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filter disc backwashing device, comprising a filter cylinder (1), a top cover (2) and a bottom cover (3) are arranged at the top and bottom of the filter cylinder (1) respectively, characterized in that: The filter disc (4) is slidably arranged in the filter cartridge (1), two sliding grooves (5) are symmetrically arranged on the inner side wall of the filter cartridge (1) and close to the position of the filter disc (4), a first elastic supporting and limiting assembly (6) for elastically supporting and limiting the filter disc (4) is arranged in each sliding groove (5), the movable shaft (7) is slidably sleeved on the top cover (2), a plurality of scraping rods (8) are fixedly connected to the outer side wall of the movable shaft (7) close to the bottom of the movable shaft (7), and the second elastic supporting and limiting assembly (9) for elastically supporting and limiting the movable shaft (7) is rotatably sleeved on the movable shaft (7).

2. A backwash assembly for a filter disc according to claim 1, wherein The first elastic supporting and limiting assembly (6) comprises a first vertical shaft (61) fixedly arranged in the sliding groove (5), and a sliding block (62) slidably sleeved on the first vertical shaft (61), one end of the sliding block (62) is fixedly connected with the filter disc (4).

3. A backwash assembly for a filter disc as defined in claim 2, wherein Two first springs (63) are symmetrically arranged on the first vertical shaft (61) on both sides of the sliding block (62), and the two ends of the first spring (63) are connected with the sliding block (62) and the inner wall of the sliding groove (5) respectively.

4. A backwash assembly for a filter disc as defined in claim 1, wherein The second elastic supporting and limiting assembly (9) comprises a fixed ring (91) fixedly sleeved on the movable shaft (7), a rotating ring (92) rotatably arranged on the top of the movable shaft (7) and corresponding to the fixed ring (91) in the top-down direction.

5. A backwash assembly for a filter disc as defined in claim 4, wherein The rotating ring (92) is fixedly connected with at least two second vertical shafts (93) at the top, and the top of each second vertical shaft (93) extends above the fixed ring (91).

6. A backwash assembly for a filter disc as defined in claim 5, wherein The second vertical shaft (93) is sleeved with a second spring (94), and the two ends of the second spring (94) are connected with the rotating ring (92) and the fixed ring (91) respectively.

7. A backwash assembly for a filter disc as defined in claim 1, wherein The outer side wall of the filter cartridge (1) is communicated with a first Z-shaped pipe (10) and a second Z-shaped pipe (11) close to the positions of the upper and lower sides of the filter disc (4), and the first Z-shaped pipe (10) and the second Z-shaped pipe (11) are respectively provided with a first electromagnetic valve (12) and a second electromagnetic valve (13).

8. A backwash assembly for a filter disc as defined in claim 1, wherein The top end of the movable shaft (7) is fixedly installed with a hand wheel (14).

9. A backwash assembly for a filter disc as defined in claim 1, wherein The sealing ring is arranged between the movable shaft (7) and the top cover (2).

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