Energy-saving vertical single-stage marine centrifugal pump

Abstract

The invention discloses an energy-saving vertical single-stage marine centrifugal pump and relates to the field of centrifugal pumps, the energy-saving vertical single-stage marine centrifugal pump comprises a pump body and a motor, the motor is located at the top of the pump body and penetrates into the pump body to be connected with an impeller, a liquid inlet is formed in one side of the pump body, a rotating shaft is rotatably arranged in the liquid inlet, rotating wheels are evenly arranged on the rotating shaft, and the rotating wheels are connected with the motor. A filter plate is arranged at the position, located on one side of the rotating wheel, in the liquid inlet, a side bevel gear is arranged on the outer wall of the rotating shaft, one side, located on the side bevel gear, of the rotating shaft is connected with the filter plate through meshing of the bevel gear, and a fence is arranged in the liquid inlet. In the rotating process of the rotating wheel, large impurities in a water source can be filtered for the first time, then the large impurities are filtered for the second time under the action of the filtering plate, and when the water source enters through the liquid inlet, the filtering plate can rapidly rotate in the enclosure, so that the filtering effect is improved. In the process, impurities separated from one side of the filter plate can be thrown away to the outer wall by the centrifugal force of the filter plate.

Description

Technical Field

[0001] The present invention relates to the field of centrifugal pumps, and particularly to an energy-saving vertical single-stage marine centrifugal pump. Background Art

[0002] Vertical centrifugal pumps are suitable for transporting clean liquids with very low viscosity (such as clear water). Vertical centrifugal pumps are mainly divided into single-stage pumps: that is, there is only one impeller on the pump shaft; multi-stage pumps: that is, there are two or more impellers on the pump shaft. At this time, the total head of the pump is the sum of the heads generated by all impellers. Existing vertical single-stage marine centrifugal pumps are used relatively frequently. However, vertical single-stage marine centrifugal pumps mainly rely on power to drive the impeller to transport water sources, and centrifugal pumps can also provide centrifugal pumps of different materials according to the needs of users and the different conveying media.

[0003] Since a large amount of impurities are usually contained in the water area during the movement of the ship in the water area, these impurities will be sucked into the interior of the centrifugal pump when the ship passes by and come into contact with and adsorb to the impeller inside the centrifugal pump. Over time, it will not only affect the working efficiency of the centrifugal pump, but also easily cause damage to the impeller itself. Therefore, it is necessary for the staff to clean the interior of the centrifugal pump regularly, which is too wasteful of manpower and material resources.

[0004] In summary, in the actual use process of the above structure, impurities will not only affect the working efficiency of the centrifugal pump, but also easily cause damage to the impeller itself, and the subsequent cleaning work is too wasteful of manpower and material resources. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide an energy-saving vertical single-stage marine centrifugal pump to solve the technical problems that in the actual use process, impurities will not only affect the working efficiency of the centrifugal pump, but also easily cause damage to the impeller itself, and the subsequent cleaning work is too wasteful of manpower and material resources.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An energy-saving vertical single-stage marine centrifugal pump, including a pump body and a motor. The motor is located at the top of the pump body and penetrates into the pump body to be connected with an impeller. One side of the pump body is provided with a liquid inlet, and a rotating shaft is rotatably arranged in the liquid inlet. A plurality of groups of runners are evenly arranged on the rotating shaft. A filter plate is arranged on one side of the runners in the liquid inlet.

[0007] A side bevel gear is arranged on the outer wall of the rotating shaft, and the filter plate is connected through the meshing of bevel gears on one side of the side bevel gear. A retaining wall for the rotation of the filter plate is arranged in the liquid inlet, and a collection bin is opened in the interlayer of the liquid inlet. A feed port cooperating with the collection bin is arranged at the retaining wall.

[0008] By adopting the above technical solution, during the rotation of the runner, larger impurities in its water source will be filtered once, and then secondary filtration will be carried out under the action of its filter plate. During this process, it is ensured that the water source entering the pump body is a relatively clean water source. When the water source enters through the liquid inlet, the filter plate itself will rotate rapidly inside the enclosure. During this process, the centrifugal force of the filter plate itself will throw the impurities separated on one side of the filter plate towards the outer wall. During this process, the filtered impurities will be uniformly discharged into the collection bin through the feed port. During this process, the impurities filtered by the filter plate are uniformly collected and processed, effectively preventing the filter plate from being blocked by impurities.

[0009] The present invention is further configured such that the front end of the filter plate is arc-shaped, and a smooth surface is provided at its arc-shaped portion. At the same time, a guiding groove is provided at the connection between the enclosure and the filter plate.

[0010] Preferably, during the rapid rotation of the filter plate itself, the arc-shaped setting facilitates the movement of impurities on the filter plate along the filter plate towards the outer wall, preventing the situation of impurities splashing during the rotation of the filter plate. At the same time, the smooth setting reduces the sliding friction between the impurities and the filter plate, ensuring that the impurities slide orderly to both sides. At the same time, the guiding groove ensures that subsequent impurities can stably enter the collection bin through the feed port.

[0011] The present invention is further configured such that a positive bevel gear is meshed with one side of the side bevel gear, and a filter plate is connected to one end of the positive bevel gear, and the tooth pitch ratio of the positive bevel gear is smaller than the tooth pitch ratio between it and the side bevel gear.

[0012] Preferably, when the rotating shaft rotates under the action of the runner, it will drive the side bevel gear on the outer wall to rotate. Under the meshing of the side bevel gear and the positive bevel gear, the filter plate is driven to rotate. Since the tooth pitch ratio of the positive bevel gear is smaller than the tooth pitch ratio between it and the side bevel gear, during the process of the rotating shaft driving the side bevel gear to rotate, the positive bevel gear will drive the filter plate to rotate several times the number of turns. During this process, the rotation speed of the filter plate itself is accelerated, and further the centrifugal force of the filter plate itself is increased, ensuring that the impurities can stably break away from the outer wall of the filter plate.

[0013] The present invention is further configured such that an outlet is provided on the other side of the liquid inlet at one end of the pump body, and the inner wall of the outlet is smooth.

[0014] Preferably, the impeller inside the pump body rotates at a high speed, sucking the liquid from the center of the impeller and accelerating it to be thrown towards the outer edge through the impeller channel. Under the action of centrifugal force, the liquid obtains a high kinetic energy and pressure, and then is discharged through the outlet. During this process, a pressure difference appears inside the pump body, which will extract new water source from the liquid inlet, and the smooth setting further improves the flow smoothness of the water source inside the outlet.

[0015] The present invention is further configured such that a discharge port is provided at the bottom of the liquid inlet, and one end located at the discharge port is communicated with the collection bin.

[0016] Preferably, the impurities in the collection bin move downward under the action of their own gravity, and then are discharged from the pump body through the discharge port at the bottom, effectively preventing the situation of excessive impurities in the pump body and further improving the subsequent overall filtration effect.

[0017] The present invention is further configured such that the orientations of the runners in the liquid inlet are uniformly set.

[0018] Preferably, the uniform orientation setting facilitates the runners to rotate in the same reverse direction when the liquid inlet sucks in water, effectively improving the stability of the rotation of the rotating shaft in the liquid inlet and further ensuring the subsequent filtration effect of the filter plate.

[0019] The present invention is further configured such that a coupling is provided at the top of the pump body, and the other end of the coupling is connected to the output end of the motor.

[0020] Preferably, under the action of the coupling, the motor drives the impeller in the pump body to rotate rapidly, and at the same time, it is convenient for subsequent workers to separately disassemble and maintain the motor.

[0021] The present invention is further configured such that the bottom of the collection bin at the discharge port is recessed, and a smooth surface is provided on the inner wall of the collection bin.

[0022] Preferably, when the impurities fall into the inner wall of the collection bin through the feed port, the smooth setting prevents the impurities from accumulating on the inner wall of the collection bin, and the bottom recessed setting facilitates the impurities to slide uniformly towards the discharge port.

[0023] The present invention is further configured such that a damping structure is provided at the connection between the rotating shaft and the liquid inlet.

[0024] Preferably, the setting of the damping structure prevents the rotating shaft from easily changing its rotation direction during the rotation in the liquid inlet, and further improves the filtration effect of the filter plate in the liquid inlet.

[0025] The present invention is further configured such that balls are connected between the inner wall of the enclosure and the filter plate.

[0026] Preferably, the setting of the balls facilitates changing the sliding friction between the filter plate and the enclosure into rolling friction, ensuring the stability of the rotation of the filter plate in the enclosure.

[0027] In summary, the present invention mainly has the following beneficial effects:

[0028] 1. In the present invention, a rotating shaft is rotatably arranged at the liquid inlet. When the motor starts to drive the impeller in the pump body to rotate, water source is extracted from the liquid inlet through the negative pressure difference. During the flowing process of the water source, the rotating shaft is driven to rotate by the action of the runner. During the rotation of the runner, larger impurities in the water source are filtered once, and then secondary filtration is carried out under the action of its filter plate. During this process, it is ensured that the water source entering the pump body is relatively clean water source, preventing impurities from causing a certain degree of wear to the impeller in the pump body. At the same time, the subsequent cleaning frequency of the pump body is effectively reduced, and a large amount of manpower and material resources are saved;

[0029] 2. In the present invention, a positive bevel gear is arranged on the rotating shaft, and a filter plate cooperating with the positive bevel gear is rotatably arranged within its enclosure. When the water source enters through the liquid inlet, the filter plate itself will rotate rapidly inside the enclosure. During this process, the centrifugal force of the filter plate itself will throw the impurities separated on one side of the filter plate towards the outer wall. During this process, the filtered impurities are uniformly discharged into the collection bin through the feed inlet. During this process, the impurities filtered by the filter plate are uniformly collected and processed, effectively preventing the impurities from blocking the filter plate, further improving the filtering effect of the device on the water source, and effectively protecting the impeller in the pump body;

[0030] 3. In the present invention, the front end of its filter plate is arc-shaped. During the rapid rotation of the filter plate itself, the arc-shaped setting facilitates the movement of the impurities on the filter plate along the filter plate towards the outer wall, preventing the situation of impurity splashing during the rotation of the filter plate. At the same time, the smooth setting reduces the sliding friction force between the impurities and the filter plate, ensuring that the impurities slide orderly to both sides. At the same time, the guiding groove ensures that the subsequent impurities can stably enter the collection bin through the feed inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the side perspective view of the present invention;

[0032] Figure 2 is the front perspective view of the present invention;

[0033] Figure 3 is the front view of the present invention;

[0034] Figure 4 is the side view of the present invention;

[0035] Figure 5 is the structural schematic diagram of the runner of the present invention;

[0036] Figure 6 is the cross-sectional view of the filter plate of the present invention;

[0037] Figure 7 of the present invention Figure 1 is the enlarged view of A;

[0038] Figure 8 For the present invention Figure 2 Enlarged view of B in the present invention;

[0039] Figure 9 Cross-sectional view of the liquid inlet of the present invention;

[0040] Figure 10 Schematic structural diagram of the collection bin of the present invention.

[0041] Explanation of reference numerals:

[0042] 1. Pump body; 2. Motor; 3. Liquid outlet; 4. Liquid inlet; 5. Runner; 6. Rotating shaft; 7. Discharge port; 8. Enclosure; 9. Filter plate; 10. Positive bevel gear; 11. Side bevel gear; 12. Collection bin; 13. Feed inlet. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0044] Next, the embodiments of the present invention will be described according to the overall structure of the present invention.

[0045] The first embodiment:

[0046] Please refer to Figures 1 - 10 An energy-saving vertical single-stage marine centrifugal pump shown in the figure, including a pump body 1, a motor 2, a liquid inlet 4, a liquid outlet 3, a sealing mechanism, a filtering mechanism and a transmission mechanism. A coupling is provided at the top of the pump body 1, and the other end of the coupling is connected to the output end of the motor 2. Under the action of the coupling, the motor 2 will drive the impeller in the pump body 1 to rotate rapidly. The high-speed rotating impeller will suck the liquid from the center of the impeller and accelerate it outwards through the impeller channel. Under the action of centrifugal force, the liquid will obtain higher kinetic energy and pressure, and then be discharged through the liquid outlet 3. During this process, a pressure difference will occur inside the pump body 1, which will draw new water source from the liquid inlet 4. At the same time, a rotating shaft 6 is rotatably arranged in the liquid inlet 4, and a plurality of groups of runners 5 are evenly arranged on the rotating shaft 6. Under the action of the runners 5, when the water source flows into the liquid inlet 4, the runners 5 themselves will rotate rapidly under the action of the water source. During this process, the runners will filter out larger impurities in the water source once;

[0047] And the outer wall of the rotating shaft 6 is provided with a side bevel gear 11, and on one side of the side bevel gear 11, it is connected to the filter plate 9 through the meshing of bevel gears. Under the action of the filter plate 9, secondary filtration is carried out, ensuring that the water source entering the pump body 1 is relatively clean water, preventing impurities from causing a certain degree of wear to the impeller in the pump body 1. At the same time, it effectively reduces the subsequent cleaning frequency of the pump body, saves a large amount of manpower and material resources. At the same time, a retaining wall 8 for the rotation of the filter plate 9 is provided in the liquid inlet 4. When the water source enters through the liquid inlet 4, the filter plate 9 itself will rotate rapidly inside the retaining wall 8. During this process, the centrifugal force of the filter plate 9 itself will throw the impurities separated on one side of the filter plate 9 towards the outer wall. And a collection bin 12 is opened in the interlayer of the liquid inlet 4, and a feed port 13 cooperating with the collection bin 12 is provided at the retaining wall 8;

[0048] Through the feed port 13, the impurities filtered by centrifugal force are uniformly discharged into the collection bin 12. During this process, the impurities filtered by the filter plate 9 are uniformly collected and processed, effectively preventing the impurities from blocking the filter plate 9, further improving the water source filtration effect of the device, effectively protecting the impeller in the pump body 1. The filtered water source will be discharged towards one end of the liquid outlet 3 under the action of the impeller. Thus, after long-term use, the pump body 1 still has high efficiency, reduces the subsequent cleaning frequency of the pump body 1 by the staff, and effectively reduces the work burden of the subsequent staff.

[0049] In the above embodiment, specifically, please refer to again Figure 5 and Figure 6 On one side of the side bevel gear 11, a positive bevel gear 10 is meshed. At one end of the positive bevel gear 10, a filter plate 9 is connected. And the pitch ratio of the positive bevel gear 10 is smaller than the pitch ratio between it and the side bevel gear 11. When the rotating shaft 6 rotates under the action of the runner 5, it will drive the side bevel gear 11 on the outer wall to rotate. Under the meshing of the side bevel gear 11 and the positive bevel gear 10, the filter plate 9 is driven to rotate. Since the pitch ratio of the positive bevel gear 10 is smaller than the pitch ratio between it and the side bevel gear 11, during the process of the rotating shaft 6 driving the side bevel gear 11 to rotate, the positive bevel gear 10 will drive the filter plate 9 to rotate several times the number of turns. During this process, the rotation speed of the filter plate 9 itself is accelerated, further increasing the centrifugal force of the filter plate 9 itself, ensuring that impurities can stably separate from the outer wall of the filter plate 9.

[0050] In the above embodiment, specifically, please refer to again Figure 9, the bottom of the collection bin 12 is recessed at the discharge port 7, and a smooth surface is provided on the inner wall of the collection bin 12. When impurities fall onto the inner wall of the collection bin 12 through the feed port 13, the smooth setting prevents the impurities from accumulating on the inner wall of the collection bin 12. Moreover, the recessed setting at the bottom facilitates the unified sliding of impurities towards the discharge port 7. At the same time, a discharge port 7 is provided at the bottom of the liquid inlet 4, and one end of the discharge port 7 is connected to the collection bin 12. At this time, the impurities in the collection bin 12 will move downward under the action of their own gravity, and then be discharged from the pump body 1 through the discharge port 7 at the bottom, effectively preventing the situation of excessive impurities in the pump body 1 and further improving the subsequent overall filtration effect.

[0051] In the above embodiment, specifically, please refer to Figure 3 and Figure 5 , in which the orientation of the runner 5 in the liquid inlet 4 is uniformly set. The uniform orientation setting facilitates the runner 5 to rotate in the same reverse direction when the liquid inlet 4 sucks in water, effectively improving the stability of the rotation of the rotating shaft 6 in the liquid inlet 4 and further ensuring the subsequent filtration effect of the filter plate 9. At the same time, a damping structure is provided at the connection between the rotating shaft 6 and the liquid inlet 4. The setting of the damping structure prevents the rotating shaft 6 from easily changing its rotation direction during the rotation in the liquid inlet 4, ensuring that the rotating shaft 6 always rotates in the same direction in the liquid inlet 4.

[0052] The second embodiment:

[0053] Please refer to Figure 5 An energy-saving vertical single-stage marine centrifugal pump shown in the figure. The overall structure is similar to that of the first embodiment. The front end of the filter plate 9 is arc-shaped, and a smooth surface is provided at its arc-shaped part. At the same time, a guiding groove is provided at the connection between the enclosure 8 and the filter plate 9. During the rapid rotation of the filter plate 9 itself, the arc-shaped setting facilitates the impurities on the filter plate 9 to move along the filter plate 9 towards the outer wall, preventing the impurities from splashing during the rotation of the filter plate 9. At the same time, the smooth setting reduces the sliding friction between the impurities and the filter plate 9, ensuring the orderly sliding of the impurities to both sides. At the same time, the guiding groove ensures that the subsequent impurities can stably enter the collection bin 12 through the feed port 13.

[0054] When the present invention is in specific operation: During use, by starting the motor 2, the impeller inside the pump body 1 is driven to rotate under the action of the motor 2. During this process, the impeller inside the pump body 1 rotates at a high speed, sucking the liquid from the center of the impeller and accelerating it to be thrown outwards through the impeller channel. Under the action of centrifugal force, the liquid obtains higher kinetic energy and pressure, and then is discharged through the liquid outlet 3. During this process, a pressure difference appears inside the pump body 1, which will extract new water sources from the liquid inlet 4. During the process of the water source flowing into the interior through the liquid inlet 4, it will drive the rotating shaft 6 to rotate. Through the runner 5 on the rotating shaft 6, a primary filtration of larger impurities can be achieved. Subsequently, under the action of the filter plate 9, a secondary filtration of the water source is carried out to ensure the cleanliness of the water source entering the pump body 1;

[0055] At the same time, a side bevel gear 11 is connected to the outer wall of the rotating shaft 6. When the rotating shaft 6 rotates under the action of the runner 5, the side bevel gear 11 will mesh with the positive bevel gear 10, causing the filter plate 9 to rotate inside the enclosure 8. During this process, the filter plate 9 rotates at a high speed, so that the impurities separated from the outer wall of the filter plate 9 will be thrown outwards under the action of its own centrifugal force, and in cooperation with the feed port 13, the impurities will enter the collection bin 12, completing the unified collection of the filtered impurities, effectively preventing the impurities from blocking the filter plate 9, and further improving the overall filtration effect.

[0056] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations that do not contribute creatively to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An energy-saving vertical single-stage marine centrifugal pump, comprising a pump body (1) and a motor (2), the motor (2) being located at the top of the pump body (1) and penetrating into the pump body (1) to be connected with an impeller, characterized in that: One side of the pump body (1) is provided with a liquid inlet (4), and a rotating shaft (6) is rotatably arranged in the liquid inlet (4). A plurality of groups of runners (5) are evenly arranged on the rotating shaft (6), and a filter plate (9) is arranged on one side of the runners (5) in the liquid inlet (4). A side bevel gear (11) is arranged on the outer wall of the rotating shaft (6), and is connected to the filter plate (9) through the meshing of bevel gears on one side of the side bevel gear (11). A retaining wall (8) for the rotation of the filter plate (9) is arranged in the liquid inlet (4). A collection bin (12) is formed in the sandwich layer of the liquid inlet (4), and a feed inlet (13) cooperating with the collection bin (12) is arranged at the retaining wall (8).

2. The energy-saving vertical single-stage marine centrifugal pump according to claim 1, characterized in that: The front end of the filter plate (9) is arc-shaped, and a smooth surface is arranged at the arc-shaped part. At the same time, a guide groove is arranged at the connection between the retaining wall (8) and the filter plate (9).

3. The energy-saving vertical single-stage marine centrifugal pump according to claim 1, wherein: A spur bevel gear (10) meshes with one side of the side bevel gear (11), and a filter plate (9) is connected to one end of the spur bevel gear (10). And the pitch ratio of the spur bevel gear (10) is smaller than the pitch ratio between it and the side bevel gear (11).

4. An energy-saving vertical single-stage marine centrifugal pump according to claim 1, characterized in that: One end of the pump body (1) is provided with a liquid outlet (3) on the other side of the liquid inlet (4), and the inner wall of the liquid outlet (3) is smooth.

5. An energy-saving vertical single-stage marine centrifugal pump according to claim 1, characterized in that: A discharge port (7) is arranged at the bottom of the liquid inlet (4), and one end of the discharge port (7) is communicated with the collection bin (12).

6. The energy-saving vertical single-stage marine centrifugal pump according to claim 1, characterized in that: The orientations of the runners (5) in the liquid inlet (4) are uniformly arranged.

7. An energy-saving vertical single-stage marine centrifugal pump according to claim 1, characterized in that: A coupling is arranged at the top of the pump body (1), and the other end of the coupling is connected to the output end of the motor (2).

8. The energy-saving vertical single-stage marine centrifugal pump according to claim 2, wherein: The bottom of the collection bin (12) is concave at the discharge port (7), and the inner wall of the collection bin (12) is provided with a smooth surface.

9. The energy-saving vertical single-stage marine centrifugal pump according to claim 1, characterized in that: A damping structure is arranged at the connection between the rotating shaft (6) and the liquid inlet (4).

10. The energy-saving vertical single-stage marine centrifugal pump according to claim 1, characterized in that: A ball is connected between the inner wall of the retaining wall (8) and the filter plate (9).

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