Micro-filtration system for aquaculture

Abstract

An aquaculture microfiltration system comprises a water tank and a filter screen drum installed in the water tank, a water outlet is formed in one side wall of the water tank, a water inlet is formed in the other side wall of the water tank, a supporting seat is installed on the side wall, opposite to the water outlet, of the water tank, and the filter screen drum comprises a supporting ring, a supporting plate, a supporting rod and a fixing ring. The supporting rods are connected between the supporting ring and the supporting plate, the outer sides of the supporting rods are wrapped with filter screens, a supporting shaft is arranged on the side, away from the supporting ring, of the supporting plate, the fixing ring is installed on the outer wall of the water tank and extends into the water outlet, the fixing ring is movably sleeved with the supporting ring, and the supporting shaft and the supporting base are rotationally connected and supported; and the motor is in transmission connection with the filter screen drum. The system adopts an integrated structure, has low requirements on installation precision, filters from outside to inside by the filter screen rotary drum, is convenient to scrub due to the fact that impurities are mainly attached to the outer wall, and is compact in structure and small in occupied area during installation.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture filtering equipment, in particular to an aquaculture microfiltration system. Background Art

[0002] The hanging water culture of fish is generally carried out in the factory, where there are multiple hanging water culture pools. In order to reduce water consumption, the sewage discharged from each culture pool in the factory is recycled and reused. In the process of treating the aquaculture sewage, it involves filtering the impurities in the sewage.

[0003] At present, the filtering system adopted by our company is similar to the structure of a rotary drum microfilter disclosed in CN217472875U. The rotary drum filter screen is driven by the drum transmission device to rotate. The water to be treated flows into the buffer chamber from the water inlet pipe and then enters the inner cavity of the rotary drum filter screen, then passes through the filter screen into the purification chamber and then flows out of the sink from the water outlet pipe.

[0004] The shortcomings of using this system for filtration are that, first, the sewage needs to pass through the buffer chamber first into the drum filter drum, that is, the drum filter drum and the middle isolation plate need to be well sealed, otherwise the sewage will flow into the purification chamber from the gap between the drum filter drum and the middle isolation plate, so the installation accuracy is relatively high; second, the sewage is filtered from the drum filter drum before flowing out, and the filtered impurities are located in the drum filter drum. Although the device is equipped with a backwash pipe, after long-term use, impurities will still adhere to the inner wall of the drum filter drum, and manual brushing is required to completely remove them. The drum filter drum filters from the inside to the outside, and impurities will mainly adhere to the inner wall, which is inconvenient to clean the inner wall; third, the device has a large structure and requires a larger site for installation; therefore, the existing structure is improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide an aquaculture microfiltration system, the system adopts an integrated structure, has low requirements on installation precision, the filter drum filters from the outside to the inside, impurities are mainly attached to the outer wall, which is easy to brush, and has a compact structure and occupies a small area when installed.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an aquaculture microfiltration system, including a water tank and a filter drum installed in the water tank, a drain outlet is provided on one side wall of the water tank, a water inlet is provided on the other side wall, a support seat is installed on the side wall of the water tank opposite to the drain outlet, the filter drum includes a support ring, a support plate, a support rod and a fixed ring, a plurality of support rods are connected between the support ring and the support plate, a filter screen is wrapped on the outer side of the support rod, a support shaft is provided on the side of the support plate away from the support ring, the fixed ring is installed on the outer wall of the water tank and extends into the drain outlet, the support ring is movably sleeved outside the fixed ring, and the support shaft is rotatably connected and supported by the support seat; it also includes a motor, which is transmission-connected to the filter drum.

[0007] A sealing plate is installed on the outer wall of the water tank at one side of the mounting support seat, a sealing ring is installed in the center hole of the sealing plate, the motor is installed on the sealing plate, the output shaft of the motor passes through the sealing ring and then penetrates into the supporting shaft, and the output shaft is key-connected with the supporting shaft.

[0008] The support seat includes a U-shaped seat, a pressure plate and a clamping bolt. The pressure plate is installed at the open end of the U-shaped seat. The clamping bolt is screwed on the pressure plate. A corrosion-resistant bearing is movably mounted on the support shaft. The corrosion-resistant bearing is installed in the U-shaped seat. The clamping bolt abuts against the outer wall of the corrosion-resistant bearing.

[0009] It also includes a recoil pipe, which extends from a fixed ring into the filter drum. A first nozzle is provided at one end of the recoil pipe located in the filter drum. A collecting tank is installed on the side wall opposite to the water inlet in the water tank. A sewage outlet is provided on the outer wall of the water tank at a position corresponding to the collecting tank, and the first nozzle is facing the upper side of the collecting tank.

[0010] A first valve is installed on the recoil pipe.

[0011] A flushing pipe is arranged on the upper side of the collecting tank. A second nozzle is arranged on the flushing pipe in the water tank. The second nozzle faces the side wall where the collecting tank is installed. A second valve is arranged on the flushing pipe.

[0012] A cover plate is installed on the top of the water tank.

[0013] A cleaning port is also provided at the lower side of the water tank, and a valve is installed at the cleaning port.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model adopts an integrated structure, which has low requirements for installation accuracy. The filter drum filters from the outside to the inside, and impurities are mainly attached to the outer wall, which is easy to brush. It also has a compact structure and occupies a small area during installation.

[0016] 2. The utility model is also provided with a recoil pipe, which recoils the filtered material attached to the filter screen to the collecting tank, and finally the sewage filtered material on the collecting tank is discharged from the sewage outlet.

[0017] 3. The utility model is provided with a flushing pipe on the upper side of the collecting tank, clean pressure water is introduced into the flushing pipe, and the second nozzle faces the side wall above the collecting tank, so that the dirt on the side wall above the collecting tank is flushed down into the collecting tank.

[0018] 4. The utility model is also provided with a cleaning port at the lower side of the water tank, and a valve is installed at the cleaning port. After cleaning the water tank, sewage is discharged from the cleaning port, which is convenient for thoroughly cleaning the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the overall structure of the utility model from another perspective.

[0022] Figure 3 This is a schematic diagram of the structure of the utility model when the cover plate and the filter screen are not shown.

[0023] Figure 4 This is a schematic structural diagram of another viewing angle of the utility model when the cover plate and the filter screen are not shown.

[0024] Figure 5 for Figure 3 Schematic diagram of the AA section structure.

[0025] Figure 6 for Figure 4 Schematic diagram of the BB cross-section structure.

[0026] Figure 7 for Figure 6 Schematic diagram of the CC cross-section structure.

[0027] Figure 8 It is a schematic diagram of the structure of the filter drum of the utility model, in which the filter is not shown.

[0028] In the figure: a water tank 10, a drain port 11, a cover plate 12, a water inlet 13, a cleaning port 14, a sewage outlet 15, a collecting tank 16, a sealing plate 17, and a sealing ring 18;

[0029] Filter drum 20, support ring 21, support plate 22, support rod 23, fixing ring 24, support shaft 25, corrosion-resistant bearing 251, support seat 26, U-shaped seat 261, pressure plate 262, and tightening bolt 263;

[0030] Motor 30, output shaft 31;

[0031] Backflush pipe 40, first nozzle 41, first valve 42;

[0032] Flushing pipe 50 , second nozzle 51 , second valve 52 . DETAILED DESCRIPTION

[0033] Embodiment 1:

[0034] like Figure 1-8 As shown, an aquaculture microfiltration system includes a water tank 10 and a filter drum 20 installed in the water tank 10. The water tank 10 adopts a metal box structure. A drain port 11 is arranged on one side wall of the water tank 10. The drain port 11 is used to discharge filtered water. A water inlet 13 is arranged on the other side wall. The water inlet 13 is used to introduce sewage to be filtered into the water tank 10. A support seat 26 is installed on the side wall of the water tank 10 opposite to the drain port 11. The filter drum 20 includes a support ring 21, a support plate 22, a support rod 23 and a fixing ring 24. A plurality of support rods 23 are welded between the support ring 21 and the support plate 22 to form a support base 26. Figure 8 In the structure shown, the outer side of the support rod 23 is wrapped with a filter screen, which is not shown in the figure. In this embodiment, the filter screen adopts a steel wire filter screen, which surrounds all the support rods 23. The steel wire filter screen can be fixed on the support rod 23 by binding with fine steel wire. The support plate 22 is provided with a support shaft 25 on the side away from the support ring 21. The fixed ring 24 is installed on the outer wall of the water tank 10 and extends into the drain port 11. The support ring 21 is movably sleeved outside the fixed ring 24. The support shaft 25 is connected and supported by the support seat 26 for rotation, so that the filter drum 20 can rotate in the water tank 10. The motor 30 is connected to the filter drum 20 for transmission. The system adopts an integrated structure, which has low requirements for installation accuracy. The filter drum filters from the outside to the inside, and impurities are mainly attached to the outer wall, which is convenient for brushing. It also has a compact structure and occupies a small area when installed.

[0035] The support ring 21 and the fixing ring 24 are processed in pairs, and there is a small gap between the support ring 21 and the fixing ring 24 to ensure that the support ring 21 can rotate. The motor 30 preferably adopts a combination of a motor and a reducer.

[0036] In one of the schemes, the motor 30 can be installed above the water tank 10, and a driven sprocket is installed on the support shaft 25 between the support plate 22 and the support seat 26. A driving sprocket is installed on the output shaft 31 of the motor 30, and the driving sprocket and the driven sprocket are connected and driven by a chain.

[0037] Alternatively, an outer gear ring is provided on the outer circumference of the support ring 21, the motor 30 is installed above the water tank 10, and a gear is installed on the output shaft 31 of the motor 30, and the gear is meshed with the outer gear ring for transmission.

[0038] In a preferred embodiment, see Figure 6 , 7 A sealing plate 17 is installed on the outer wall of the water tank 10 at one side of the mounting support seat 26. The sealing plate 17 is sealed and connected to the outer wall of the water tank 10, for example, by full welding. A sealing ring 18 is installed in the center hole of the sealing plate 17. The motor 30 is installed on the sealing plate 17. The output shaft 31 of the motor 30 passes through the sealing ring 18 and then passes into the support shaft 25. The output shaft 31 is keyed to the support shaft 25. By setting the sealing plate 17, the output shaft 31 is water-sealed. Preferably, the sealing ring 18 adopts a shaft seal structure. The output shaft 31 is keyed to the support shaft 25, and the motor installation is simple and convenient. See Figure 7 Specifically, a spline hole is provided at the center of the end of the support shaft 25, and a spline is provided on the output shaft 31 of the motor 30. The spline is inserted into the spline hole, which is convenient for installation. Of course, a centerline hole with a keyway can also be provided at the center of the end of the support shaft 25, and a flat key is installed on the output shaft 31 of the motor 30, and the flat key cooperates with the keyway.

[0039] When the transmission connection between the motor 30 and the filter drum 20 adopts the above solution, the support seat 26 can adopt a bearing seat, such as a UCF series bearing seat.

[0040] In a preferred embodiment, see Figure 7 The support seat 26 includes a U-shaped seat 261, a pressure plate 262 and a clamping bolt 263. The pressure plate 262 is installed at the open end of the U-shaped seat 261. The clamping bolt 263 is screwed on the pressure plate 262. A corrosion-resistant bearing 251 is movably sleeved on the support shaft 25. The corrosion-resistant bearing 251 is installed in the U-shaped seat 261. The clamping bolt 263 abuts against the outer wall of the corrosion-resistant bearing 251. The above structure facilitates the installation of the filter drum 20.

[0041] When installing the filter drum 20, the corrosion-resistant bearing 251 is now mounted on the support shaft 25, the pressure plate 262 on the U-shaped seat 261 is disassembled, and the filter drum 20 is placed in the water tank 10. The support shaft 25 can be directly placed on the U-shaped seat 261, and then the support ring 21 is aligned with the drain outlet 11, and then the fixing ring 24 is installed on the water tank 10 from the outside of the water tank 10. The fixing ring 24 extends into the support ring 21, so that the filter drum 20 is supported, and then the pressure plate 262 is installed, and then the tightening bolts 263 are appropriately tightened to complete the installation of the filter drum 20.

[0042] Embodiment 2:

[0043] The difference from the first embodiment is that, see Figure 3-5, and also includes a backwash pipe 40, which extends from the fixing ring 24 into the filter drum 20. The backwash pipe 40 is provided with a first nozzle 41 at one end located in the filter drum 20. A collecting tank 16 is installed on the side wall opposite to the water inlet 13 in the water tank 10. A sewage outlet 15 is provided on the outer wall of the water tank 10 at a position corresponding to the collecting tank 16. The first nozzle 41 faces the upper side of the collecting tank 16. Through the above structure, the filter of the filter drum 20 is backwashed and cleaned to improve the filtering efficiency of the filter drum 20. In a specific implementation, compressed air or pressurized water can pass through the backwash pipe 40. See Figure 5 The first nozzle 41 flushes the filtered material attached to the filter screen to the collecting tank 16, and finally the filtered material on the collecting tank 16 is discharged from the sewage outlet 15. Figure 3 , 4 , the collecting tank 16 is in an inclined state.

[0044] Further, a first valve 42 is installed on the backwash pipe 40, and when the filter screen needs to be backwashed and cleaned, the first valve 42 is opened. Preferably, the first valve 42 preferably adopts a solenoid valve, which is controlled by a delay controller or PLC, so as to be started intermittently to reduce the consumption of clean water and compressed air.

[0045] Embodiment three:

[0046] On the basis of the second embodiment, when the first nozzle 41 flushes the filtered matter attached to the filter screen to the collecting tank 16, the filtered matter will be attached to the side wall above the collecting tank 16. Figure 5 A flushing pipe 50 is provided on the upper side of the collection tank 16. The flushing pipe 50 is provided with a second nozzle 51 in the water tank 10. The second nozzle 51 faces the side wall where the collection tank 16 is installed. Clean pressure water is introduced into the flushing pipe 50. The second nozzle 51 faces the side wall above the collection tank 16, so that the dirt on the side wall above the collection tank 16 is flushed into the collection tank 16. A second valve 52 is provided on the flushing pipe 50. The second valve 52 is preferably a solenoid valve. The solenoid valve is controlled by a delay controller or a PLC, so that it is started intermittently to reduce the consumption of clean water.

[0047] In order to prevent the water in the backwash pipe 40 from splashing when it is sprayed out, a cover plate 12 is installed on the top of the water tank 10. The flushing pipe 50 can be inserted from the side wall of the water tank 10 or from the cover plate 12. Specifically, the cover plate 12 is installed on the water tank 10 by bolts, and a sealant is applied between the cover plate 12 and the water tank 10 for sealing.

[0048] Embodiment 4:

[0049] In order to facilitate the thorough cleaning of the water tank 10, see Figure 2 , 4A cleaning port 14 is also provided at the lower side of the water tank 10, and a valve is installed at the cleaning port 14. After the water tank 10 is cleaned, sewage is discharged from the cleaning port 14. The valve installed on the cleaning port 14 can be a manual ball valve or a gate valve.

[0050] The action process or principle of the utility model is as follows:

[0051] See also Figure 3 , 4 The sewage to be filtered enters the water tank 10 from the water inlet 13, the motor 30 drives the filter drum 20 to rotate, the sewage is filtered through the filter on the filter drum 20, the filtered water enters the filter drum 20, and is finally discharged from the drain port 11, and impurities or filtered materials remain in the water tank 10.

[0052] The impurities or filtered materials attached to the filter screen of the filter drum 20 are impacted to the collection tank 16 by the compressed air or pressurized water discharged from the backwash pipe 40, and the impurities or filtered materials attached to the side wall above the collection tank 16 are washed down into the collection tank 16 by the flushing pipe 50. Finally, the sewage in the collection tank 16 is discharged from the sewage outlet 15.

[0053] The filter of the filter drum 20 needs to be cleaned. Since the filter is filtered from the outside to the inside, a large amount of impurities or filtered materials will be attached to the outside of the filter. At this time, it can be conveniently cleaned with a brush.

[0054] In addition, after the water tank 10 is cleaned, the valve on the cleaning port 14 is opened, and the sewage is discharged from the cleaning port 14.

Claims

1. An aquaculture microfiltration system, comprising a water tank (10) and a filter drum (20) installed in the water tank (10), characterized in that: A drain port (11) is provided on one side wall of the water tank (10), and a water inlet (13) is provided on the other side wall. A support seat (26) is installed on the side wall of the water tank (10) opposite to the drain port (11). The filter drum (20) comprises a support ring (21), a support plate (22), a support rod (23) and a fixing ring (24). A plurality of support rods (23) are connected between the support ring (21) and the support plate (22). A filter is wrapped around the outer side of the support rod (23). A support shaft (25) is provided on the side of the support plate (22) away from the support ring (21). The fixing ring (24) is installed on the outer wall of the water tank (10) and extends into the drain port (11). The support ring (21) is movably sleeved outside the fixing ring (24). The support shaft (25) is rotatably connected and supported by the support seat (26). The water tank (10) also comprises a motor (30) which is transmission-connected to the filter drum (20).

2. An aquaculture microfiltration system according to claim 1, characterized in that: A sealing plate (17) is installed on the outer wall of the water tank (10) at one side of the mounting support seat (26), a sealing ring (18) is installed in the center hole of the sealing plate (17), the motor (30) is installed on the sealing plate (17), the output shaft (31) of the motor (30) passes through the sealing ring (18) and then passes into the support shaft (25), and the output shaft (31) is key-connected to the support shaft (25).

3. An aquaculture microfiltration system according to claim 1, characterized in that: The support seat (26) comprises a U-shaped seat (261), a pressure plate (262) and a clamping bolt (263), wherein the pressure plate (262) is mounted on the open end of the U-shaped seat (261), and the clamping bolt (263) is screwed onto the pressure plate (262). A corrosion-resistant bearing (251) is movably sleeved on the support shaft (25), and the corrosion-resistant bearing (251) is mounted in the U-shaped seat (261), and the clamping bolt (263) abuts against the outer wall of the corrosion-resistant bearing (251).

4. An aquaculture microfiltration system according to claim 1, characterized in that: The invention also comprises a backwash pipe (40), the backwash pipe (40) extending from the fixing ring (24) into the filter drum (20), a first nozzle (41) being provided at one end of the backwash pipe (40) located in the filter drum (20), a collecting tank (16) being installed on a side wall opposite to the water inlet (13) in the water tank (10), a sewage outlet (15) being provided on an outer wall of the water tank (10) at a position corresponding to the collecting tank (16), and the first nozzle (41) being directed toward the upper side of the collecting tank (16).

5. An aquaculture microfiltration system according to claim 4, characterized in that: The recoil pipe (40) is provided with a first valve (42).

6. An aquaculture microfiltration system according to claim 4 or 5, characterized in that: A flushing pipe (50) is provided on the upper side of the collecting tank (16); the flushing pipe (50) is provided with a second nozzle (51) located in the water tank (10); the second nozzle (51) faces the side wall on which the collecting tank (16) is installed; and a second valve (52) is provided on the flushing pipe (50).

7. An aquaculture microfiltration system according to claim 1, characterized in that: A cover plate (12) is installed on the top of the water tank (10).

8. An aquaculture microfiltration system according to claim 1, characterized in that: The water tank (10) is also provided with a cleaning port (14) at the lower side thereof, and a valve is installed at the cleaning port (14).

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