Centrifugal pump water diversion filter device

Abstract

This invention provides a centrifugal pump priming and filtration device. The device includes a filter chamber, a diversion chamber, and a backwash pipe. One end of the backwash pipe is connected to the diversion chamber, and the other end is connected to an outlet pipe. The diversion chamber has a main inlet, a first diversion port, and a second diversion port. A diversion plate is also provided inside the diversion chamber, and the diversion plate has a first diversion pipe and a second diversion pipe. The diversion plate can rotate relative to the diversion chamber, connecting the two ends of the first diversion pipe to the main inlet and the first diversion port, or connecting the two ends of the second diversion pipe to the main inlet and the second diversion port. The backwash pipe is connected to the second diversion port. The diversion plate can block the first diversion port when water is introduced into the backwash pipe. This centrifugal pump priming and filtration device ensures that the injected backwash water is not disturbed by the incoming water, maintaining a stable and strong pressure and flow rate, thereby efficiently flushing the filter plate.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pumps, and in particular to a centrifugal pump priming filtration device. Background Technology

[0002] Centrifugal pumps are hydraulic machines widely used in agricultural irrigation and drainage, as well as water supply and drainage in industrial and mining enterprises and towns. In practical applications, water sources often contain various impurities, such as sand, gravel, garbage, and silt. If these impurities enter the centrifugal pump with the water, they will damage the impeller, cause wear on the pump components, reduce pumping efficiency, and affect service life. To maintain the efficient operation of centrifugal pumps, a priming filtration device is required.

[0003] To maintain the efficient operation of the filtration system, regular backwashing of the filter discs is crucial. Currently, in existing centrifugal pump-primed filtration devices, the inlet valve of the filter chamber is controlled by a program. However, this program may malfunction, failing to ensure that the inlet end of the filter chamber remains closed during backwashing. This results in continuous water intake during backwashing, creating a counter-current with the backwash water injected through the flushing valve. This reduces the pressure and flow rate of the backwash water, leading to insufficient backwashing force and difficulty in thoroughly removing impurities from the filter discs, thus affecting the backwashing cleaning effect.

[0004] Therefore, it is necessary to provide a centrifugal pump priming filtration device to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a centrifugal pump priming water filtration device, which solves the problem that the control program may malfunction during backwashing of the filter disc, making it impossible to guarantee that the inlet of the filter chamber is always in a closed state during filter disc backwashing.

[0006] To solve the above-mentioned technical problems, the present invention provides a centrifugal pump water filtration device comprising: a filter chamber, a diversion chamber, and a backwash pipe. One end of the backwash pipe is connected to the diversion chamber, and the other end is connected to the outlet pipe. The diversion chamber is provided with a main inlet, a first diversion port, and a second diversion port. The diversion chamber is also provided with a diversion plate, and the diversion plate is provided with a first diversion pipe and a second diversion pipe. The diversion plate can rotate relative to the diversion chamber, thereby connecting the two ends of the first diversion pipe to the main inlet and the first diversion port, or connecting the two ends of the second diversion pipe to the main inlet and the second diversion port. The backwash pipe is connected to the second diversion port. The diversion plate can block the first diversion port when water is introduced into the backwash pipe.

[0007] Preferably, the filter chamber is equipped with a filter disc, with an inlet on one side and an outlet on the other side, and the inlet is close to the diversion chamber.

[0008] Preferably, the diversion chamber has a main inlet at the end away from the filter chamber, a diversion port one at the end of the diversion chamber closer to the filter chamber, a diversion port two connected to the backwash pipe, and a diversion component inside the diversion chamber.

[0009] Preferably, the diversion component includes: a motor and a diversion plate. The diversion plate is fixedly connected to the drive end of the motor and located inside the diversion chamber. The diversion plate has a first diversion pipe and a second diversion pipe inside. The motor can drive the diversion plate to rotate, so that the two ends of the first diversion pipe are connected to the main inlet and the first diversion port, or the two ends of the second diversion pipe are connected to the main inlet and the second diversion port.

[0010] Preferably, an inlet pipe is fitted onto the diversion chamber, with one end of the inlet pipe connected to a diversion port and the other end connected to a water inlet. A drain pipe is fitted onto the bottom of the inlet pipe, and a drain valve is installed on the drain pipe.

[0011] Preferably, the filter chamber is fitted with an outlet pipe on the side away from the diversion chamber. One end of the outlet pipe is connected to the water outlet, and the other end is fixedly connected to an outlet flange. An outlet valve is also provided on the outlet pipe.

[0012] Preferably, one end of the backflush pipe is connected to the second diversion port, and the other end is connected to the outlet pipe. A backflush valve is also provided on the backflush pipe, and the outlet valve is located between the flange and the connection between the backflush pipe and the outlet pipe.

[0013] Preferably, a water inlet assembly is provided on the side of the diversion chamber away from the filter chamber. The water inlet assembly includes a connecting pipe and a water inlet pipe one. One end of the connecting pipe is fixedly connected to a connecting flange, and the other end is sleeved on the diversion chamber. The connecting pipe can be fixedly connected to the water inlet pipe one through the connecting flange. A water inlet pipe two is sleeved at the bottom of the water inlet pipe one.

[0014] Compared with related technologies, the centrifugal pump priming and filtration device provided by this utility model has the following advantages:

[0015] Beneficial effects:

[0016] This centrifugal pump priming and filtration device features a design that ensures the inlet of the filter chamber is always closed during backwashing of the filter discs. This guarantees that the injected backwash water is not disturbed by incoming water, maintaining a stable and strong pressure and flow rate. This allows for efficient flushing of the filter discs, thoroughly removing impurities and significantly improving the backwashing cleaning effect. Thanks to thorough backwashing, the frequency of filter disc clogging is reduced, extending the service life and decreasing the number of filter disc replacements, thus lowering equipment maintenance costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 This is a front cross-sectional view of the filtration process of this utility model;

[0020] Figure 4 This is a frontal sectional view of the backwashing process of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the current splitter component of this utility model.

[0022] Numbered in the diagram: 1. Filter chamber; 11. Filter disc; 12. Inlet; 13. Outlet; 2. Diversion chamber; 21. Main inlet; 22. Diversion port one; 23. Diversion port two; 24. Diversion assembly; 241. Motor; 242. Diversion disc; 2421. Diversion pipe one; 2422. Diversion pipe two; 3. Backflush pipe; 31. Backflush valve; 4. Inlet assembly; 41. Connecting pipe; 411. Connecting flange; 42. Inlet pipe one; 421. Inlet pipe two; 5. Inlet pipe; 51. Drain pipe; 511. Drain valve; 6. Outlet pipe; 61. Outlet valve; 62. Outlet flange. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1 to 5 A centrifugal pump water filtration device includes: a filter chamber 1, a diversion chamber 2, a backwash pipe 3, an inlet assembly 4, an inlet pipe 5, and an outlet pipe 6. One end of the backwash pipe 3 is connected to the diversion chamber 2, and the other end is connected to the outlet pipe 6. The inlet assembly 4 is located at the inlet end of the diversion chamber 2. The inlet pipe 5 is located between the filter chamber 1 and the diversion chamber 2. The outlet pipe 6 is connected to the outlet end of the filter chamber 1. The water entering the centrifugal pump enters the diversion chamber 2 after passing through the inlet assembly 4. The diversion chamber 2 guides the water to the inlet pipe 5, and then into the filter chamber 1 for filtration. After filtration, the water is then guided to the centrifugal pump through the outlet pipe 6. When cleaning the filter chamber 1, the inlet assembly 4 introduces backwash water. The backwash water passes through the diversion chamber 2 to the backwash pipe 3 and then to the outlet end of the filter chamber 1. After cleaning the filter chamber 1, the flushed wastewater is discharged from the inlet end of the filter chamber 1.

[0025] The filter chamber 1 is equipped with a filter disc 11. The filter chamber 1 has an inlet 12 on one side and an outlet 13 on the other side. The inlet end of the filter chamber 1 is connected to the inlet 12, and the inlet pipe 5 is connected to the inlet 12. The outlet end of the filter chamber 1 is connected to the outlet 13, and the outlet pipe 6 is connected to the outlet 13. The water to be introduced into the centrifugal pump enters the filter chamber 1 through the inlet 12. After the filter disc 11 filters the water, it is discharged through the outlet 13 and guided into the centrifugal pump through the outlet pipe 6.

[0026] The diversion chamber 2 has a main inlet 21 at one end near the water inlet component 4 and a diversion port 22 at the other end near the inlet pipe 5. The diversion port 22 is connected to the inlet pipe 5. The diversion chamber 2 also has a diversion port 23 connected to the backwash pipe 3. The diversion chamber 2 is equipped with a diversion component 24. Water enters the diversion chamber 2 from the main inlet 21 and is transported to either the diversion port 22 or the diversion port 23 by the diversion component 24. Only one outlet can be delivered at a time, and the other outlet is blocked.

[0027] The diversion assembly 24 includes a motor 241 and a diversion plate 242. The diversion plate 242 is fixedly connected to the drive end of the motor 241 and is located inside the diversion chamber 2. The diversion plate 242 has a first diversion pipe 2421 and a second diversion pipe 2422 inside. The motor 241 can drive the diversion plate 242 to rotate. When it is necessary to guide water to the filter chamber 1, the first diversion pipe 2421 is rotated so that both ends are connected to the main inlet 21 and the first diversion port 22, and the water is transported to the inlet 12 of the filter chamber 1. When it is necessary to backwash the filter disc 11 of the filter chamber 1, the diversion plate 242 is rotated so that both ends of the second diversion pipe 2422 are connected to the main inlet 21 and the second diversion port 23. At this time, the diversion plate 242 guides the water to the backwash pipe 3.

[0028] One end of the backwash pipe 3 is connected to the second diversion port 23, and the other end is connected to the outlet pipe 6. The backwash pipe 3 is also equipped with a backwash valve 31. After the water enters the backwash pipe 3, the backwash valve 31 is opened and the water enters the outlet 13 of the filter chamber 1 to backwash the filter disc 11. The backwash sewage is discharged from the inlet 12 of the filter chamber 1. At this time, the first diversion port 22 is in a closed state.

[0029] The water inlet assembly 4 includes: a connecting pipe 41 and a first water inlet pipe 42. One end of the connecting pipe 41 is fixedly connected to a connecting flange 411, and the other end is sleeved on the diversion chamber 2. The connecting pipe 41 can be fixedly connected to the first water inlet pipe 42 through the connecting flange 411. The bottom of the first water inlet pipe 42 is sleeved with a second water inlet pipe 421. The water introduced by the centrifugal pump is introduced from the first water inlet pipe 42 into the connecting pipe 41 and into the diversion chamber 2. The backwash water is introduced from the second water inlet pipe 421 into the connecting pipe 41 and into the diversion chamber 2.

[0030] One end of the inlet pipe 5 is connected to the diversion port 22, and the other end is connected to the inlet 12. The bottom of the inlet pipe 5 is fitted with a drain pipe 51, and a drain valve 511 is installed on the drain pipe 51. When water is introduced into the centrifugal pump in the filter chamber 1, the water enters the filter chamber 1 through the inlet pipe 5. The filter disc 11 filters the water introduced into the centrifugal pump. During backwashing, the wastewater after backwashing enters the inlet pipe 5. Since the diversion port 22 is closed, the wastewater enters the drain pipe 51 after the drain valve 511 is opened.

[0031] One end of the outlet pipe 6 is connected to the outlet 13, and the other end is fixedly connected to the outlet flange 62. An outlet valve 61 is provided on the outlet pipe 6. The outlet valve 61 is located between the flange and the connection between the backwash pipe 3 and the outlet pipe 6. When filtering the water introduced into the centrifugal pump, the water enters the filter chamber 1 through the inlet pipe 5. After filtration, it is guided into the centrifugal pump through the outlet pipe 6. During backwashing, the backwash water in the diversion pipe enters the outlet pipe 6. At this time, the outlet valve 61 is closed, and the water enters the filter chamber 1 to backwash the filter disc 11.

[0032] The working principle of the centrifugal pump priming and filtration device provided by this utility model is as follows:

[0033] The water to be filtered enters the main inlet 21 of the diversion chamber 2 through the inlet pipe 42 and the connecting pipe 41. The motor 241 drives the diversion plate 242 to rotate, so that the diversion pipe 2421 is aligned and connected to the main inlet 21 and the diversion port 22. The water flows into the inlet pipe 5 through the diversion port 22, enters the filter chamber 1 through the inlet 12, and enters the filter chamber 1. After the water is filtered of impurities by the filter plate 11, it flows into the outlet pipe 6 from the outlet 13 and is finally delivered to the centrifugal pump.

[0034] When the filter disc 11 needs cleaning, the motor 241 drives the diversion disc 242 to rotate, so that the second diversion pipe 2422 is aligned and connected to the main inlet 21 and the second diversion port 23. At the same time, the diversion disc 242 blocks the first diversion port 22, cutting off the water inlet path of the filter chamber 1. The backwash water (such as cleaning water) enters the diversion chamber 2 from the second inlet pipe 421 through the connecting pipe 41, and flows into the backwash pipe 3 through the second diversion port 23. The backwash valve 31 is opened, and the backwash water enters the outlet pipe 6 through the backwash pipe 3. At this time, the outlet valve 61 is closed, and the water is forced to enter the filter chamber 1 in reverse from the outlet 13. The backwash water is flushed from the downstream of the filter disc 11 (the outlet 13 side) to the inlet 12 side at high pressure, removing impurities from the surface of the filter disc 11 and forming sewage. The sewage flows into the inlet pipe 5 through the inlet 12. After the drain valve 511 is opened, it is discharged from the drain pipe 51, completing the cleaning.

[0035] The mechanical rotation of the diversion plate 242 directly blocks the diversion port 1 22, replacing the traditional electric control valve, and keeps only one of the diversion port 1 22 and the diversion port 23 in a water-flowing state at all times, so as to achieve the effect of no backwashing during filtration and no water entering during backwashing, thereby improving cleaning efficiency and the life of the filter plate 11.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A centrifugal pump priming water filtration device, comprising: The filter chamber (1), the diversion chamber (2), and the backflushing pipe (3) are provided. One end of the backflushing pipe (3) is connected to the diversion chamber (2), and the other end is connected to the outlet pipe (6). The diversion chamber (2) is characterized by having a main inlet (21), a diversion port one (22), and a diversion port two (23). The diversion chamber (2) is also provided with a diversion plate (242), and the diversion plate (242) is provided with a diversion pipe one (2421) and a diversion pipe two (2421) inside the diversion plate (242). 422), the diversion plate (242) can rotate relative to the diversion chamber (2), causing the two ends of the diversion pipe one (2421) to connect with the main inlet (21) and the diversion port one (22), or the two ends of the diversion pipe two (2422) to connect with the main inlet (21) and the diversion port two (23), and the backflushing pipe (3) to connect with the diversion port two (23). The diversion plate (242) can block the diversion port one (22) when the backflushing pipe (3) introduces water.

2. The centrifugal pump priming and filtration device according to claim 1, characterized in that, The filter chamber (1) is equipped with a filter disc (11). The filter chamber (1) has an inlet (12) on one side and an outlet (13) on the other side, and the inlet (12) is close to the diversion chamber (2).

3. The centrifugal pump priming and filtration device according to claim 2, characterized in that, The diversion chamber (2) has a main inlet (21) at the end away from the filter chamber (1), a diversion port one (22) at the end of the diversion chamber (2) close to the filter chamber (1), a diversion port two (23) connected to the backwash pipe (3) is also provided on the diversion chamber (2), and a diversion component (24) is also provided inside the diversion chamber (2).

4. A centrifugal pump priming and filtration device according to claim 3, characterized in that, The diversion assembly (24) includes a motor (241) and a diversion plate (242). The diversion plate (242) is fixedly connected to the drive end of the motor (241) and is located inside the diversion chamber (2). The diversion plate (242) has a first diversion pipe (2421) and a second diversion pipe (2422) inside. The motor (241) can drive the diversion plate (242) to rotate, so that the two ends of the first diversion pipe (2421) are connected to the main inlet (21) and the first diversion port (22), or the two ends of the second diversion pipe (2422) are connected to the main inlet (21) and the second diversion port (23).

5. A centrifugal pump priming and filtration device according to claim 3, characterized in that, The diversion chamber (2) is fitted with an inlet pipe (5), one end of which is connected to the diversion port (22) and the other end is connected to the inlet (12). The bottom of the inlet pipe (5) is fitted with a drain pipe (51), and a drain valve (511) is installed on the drain pipe (51).

6. A centrifugal pump priming and filtration device according to claim 2, characterized in that, The filter chamber (1) is fitted with an outlet pipe (6) on the side away from the diversion chamber (2). One end of the outlet pipe (6) is connected to the water outlet (13), and the other end is fixedly connected to an outlet flange (62). An outlet valve (61) is provided on the outlet pipe (6).

7. A centrifugal pump priming and filtration device according to claim 6, characterized in that, One end of the backflush pipe (3) is connected to the second diversion port (23), and the other end is connected to the outlet pipe (6). A backflush valve (31) is also provided on the backflush pipe (3), and the outlet valve (61) is located between the flange and the connection between the backflush pipe (3) and the outlet pipe (6).

8. A centrifugal pump priming and filtration device according to claim 1, characterized in that, The diversion chamber (2) is provided with a water inlet assembly (4) on the side away from the filter chamber (1). The water inlet assembly (4) includes a connecting pipe (41) and a water inlet pipe (42). One end of the connecting pipe (41) is fixedly connected to a connecting flange (411), and the other end is sleeved on the diversion chamber (2). The connecting pipe (41) can be fixedly connected to the water inlet pipe (42) through the connecting flange (411). The bottom of the water inlet pipe (42) is sleeved with a water inlet pipe (421).

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