Centrifugal pump with filtering structure

Abstract

The utility model discloses a centrifugal pump with a filtering structure, which relates to the technical field of centrifugal pumps and comprises a centrifugal pump body, a main pipeline communicated and matched with a water inlet end of the centrifugal pump body is arranged outside the centrifugal pump body, an outer box is fixedly connected to the bottom of the main pipeline, and an inlet groove and an outlet groove are respectively arranged at two ends of the bottom of the main pipeline. The inlet groove is far away from the centrifugal pump body, the inlet groove, an inner cavity of the outer box and the outlet groove form a flowing groove, and a transverse filter screen is installed in the outlet groove. A vertical filter screen is installed in the main pipeline, the bottom end of the vertical filter screen corresponds to the end, close to the centrifugal pump body, of the inlet groove, a shaft rod is rotationally arranged on the vertical filter screen, and a melt-spinning belt corresponding to the inlet groove is fixedly connected to the shaft rod. According to the centrifugal pump with the filtering structure, by arranging the structures such as the outer box, the inlet groove and the vertical filter screen, particle impurities are synchronously filtered and collected under pushing of water flow, and the use efficiency of the centrifugal pump is improved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, and in particular to a centrifugal pump with a filtration structure. Background Technology

[0002] A centrifugal pump is a type of pump that uses centrifugal force generated by the rotation of an impeller to transport liquids. It is widely used in industrial, agricultural, and municipal fields. Centrifugal pumps are non-positive displacement pumps, and their core function is to transport liquids by generating centrifugal force through the rotation of an impeller, rather than by changing the volume of the working chamber.

[0003] In existing centrifugal pumps, filters are installed on the inlet pipe by means of bolts to prevent impeller wear and other issues. However, during use, particulate impurities tend to accumulate on the filter, requiring manual cleaning after the pump is stopped, thus reducing efficiency.

[0004] Therefore, it is necessary to propose a centrifugal pump with a filtration structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a centrifugal pump with a filtration structure to solve the problem that in existing centrifugal pumps, in order to prevent impeller wear, a filter screen is installed on the water inlet pipe by means of bolts or other methods. However, during use, particulate impurities are easily accumulated on the filter screen, requiring manual cleaning after the pump is stopped, thus reducing the efficiency of use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a centrifugal pump with a filtration structure, comprising a centrifugal pump body, wherein a main pipe is provided on the outside of the centrifugal pump body and communicates with its water inlet end, an outer box is fixedly connected to the bottom of the main pipe, an inlet groove and an outlet groove are respectively opened at both ends of the bottom of the main pipe, and the inlet groove is far away from the centrifugal pump body, the inlet groove, the inner cavity of the outer box and the outlet groove form a flow channel, and a horizontal filter screen is installed inside the outlet groove;

[0007] The main pipeline is equipped with a vertical filter screen, and the bottom end of the vertical filter screen corresponds to the end of the inlet tank that is close to the centrifugal pump body. A shaft is rotatably installed on the vertical filter screen, and a sling corresponding to the inlet tank is fixedly connected to the shaft.

[0008] The end of the shaft away from the centrifugal pump body is fixedly connected to a blade.

[0009] Preferably, there is a gap between the belt and the vertical filter screen.

[0010] Preferably, a power generation device is provided on the side of the vertical filter screen near the centrifugal pump body, a top rod is fixedly connected to the inner wall of the main pipe, the power generation device is fixedly installed on the top rod, and the shaft is connected to the power generation device.

[0011] Preferably, the power generation equipment is provided with a conductor, and the conductor extends to the outside of the main pipeline.

[0012] Preferably, the two ends of the main pipeline are respectively connected to a first connecting pipe and a second connecting pipe, wherein the end of the first connecting pipe away from the main pipeline is connected to the water inlet end of the centrifugal pump body, the inner diameter of the first connecting pipe and the second connecting pipe are the same, and the inner diameter of the main pipeline is larger than the inner diameter of the first connecting pipe and the second connecting pipe.

[0013] Preferably, the bottom of the outer box has a through groove, and a cover plate is snapped into the inside of the through groove.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This utility model, by setting up structures such as an outer box, an inlet trough, and a vertical filter screen, simultaneously achieves the filtration and collection of particulate impurities under the impetus of water flow, thereby improving the efficiency of the centrifugal pump.

[0016] The blades drive the shaft to rotate, and the power generation equipment operates, converting the kinetic energy of water into electrical energy, thus making effective use of electrical energy;

[0017] The inner diameter of the main pipeline is larger than that of the first and second connecting pipes, which ensures that there is still a large flow area inside the main pipeline and guarantees the stability of water transportation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the centrifugal pump with a filtration structure according to the present invention.

[0019] Figure 2 This is a schematic diagram of the vertical and horizontal filter structures of this utility model.

[0020] Figure 3 This is a schematic diagram of the outer box and cover structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the groove and horizontal filter screen structure of this utility model.

[0022] In the diagram: 1. Centrifugal pump body; 2. Main pipeline; 3. Outer casing; 4. Flow channel; 5. Inlet channel; 6. Vertical filter screen; 7. Outlet channel; 8. Horizontal filter screen; 9. Shaft; 10. Impeller; 11. Belt; 12. Power generation equipment; 13. Wire; 14. Top rod; 15. First connecting pipe; 16. Second connecting pipe; 17. Cover plate. Detailed Implementation

[0023] This utility model provides, for example Figures 1-4The centrifugal pump shown includes a centrifugal pump body 1, a main pipe 2 externally disposed on the centrifugal pump body 1, and a first connecting pipe 15 and a second connecting pipe 16 respectively connected to both ends of the main pipe 2. The end of the first connecting pipe 15 away from the main pipe 2 is connected to the water inlet of the centrifugal pump body 1, and the second connecting pipe 16 is connected to an external conveying pipe. When the centrifugal pump body 1 is in operation, water enters the centrifugal pump body 1 in sequence through the external conveying pipe, the second connecting pipe 16, the main pipe 2, and the first connecting pipe 15, and is output from the water outlet of the centrifugal pump body 1.

[0024] The centrifugal pump body 1 is a non-positive displacement pump, and its working principle is a common existing technology, which will not be described in detail here.

[0025] To achieve the filtration and collection of particulate impurities, an outer box 3 is fixedly connected to the bottom of the main pipe 2. An inlet 5 and an outlet 7 are respectively opened at both ends of the bottom of the main pipe 2. The inlet 5 is far away from the centrifugal pump body 1. The inlet 5, the inner cavity of the outer box 3 and the outlet 7 form a flow channel 4. A horizontal filter screen 8 is installed inside the outlet 7.

[0026] The main pipe 2 is equipped with a vertical filter screen 6, as shown in the reference. Figure 2 The vertical filter screen 6 is located between the inlet tank 5 and the outlet tank 7, and the bottom left side of the vertical filter screen 6 is aligned with the end of the inlet tank 5 that is close to the centrifugal pump body 1.

[0027] A shaft 9 is rotatably mounted on the vertical filter screen 6, and a spinning belt 11 corresponding to the inlet groove 5 is fixedly connected to the shaft 9. The spinning belt 11 can be made of thermoplastic polyurethane (TPU), which is flexible and has low friction. There is a gap between the spinning belt 11 and the vertical filter screen 6, such as 0.1mm, to reduce the wear of the vertical filter screen 6.

[0028] Vertical filter screen 6 and horizontal filter screen 8 can be made of, but are not limited to, 316L stainless steel, which has corrosion resistance and impact resistance.

[0029] The end of the shaft 9 away from the centrifugal pump body 1 is fixedly connected to the blade 10.

[0030] When the centrifugal pump body 1 is running, water flows into the main pipe 2 and is filtered by the vertical filter screen 6. Particulate impurities are trapped and attached to the surface of the vertical filter screen 6. Driven by the water flow, the blade 10 drives the shaft 9 to rotate, and the sling belt 11 fixed on the shaft 9 rotates accordingly, peeling off the particulate impurities attached to the surface of the vertical filter screen 6. The peeled particulate impurities are spun by the sling belt 11 and under the action of gravity, and enter the interior of the outer box 3 through the inlet trough 5. The filtration and collection of particulate impurities are realized simultaneously, ensuring the efficient use of the centrifugal pump body 1.

[0031] The inlet 5, the inner cavity of the outer box 3, and the outlet 7 form a flow channel 4, which does not affect the flow of water inside the outer box 3, and a horizontal filter screen 8 is provided so that impurities will not enter the interior of the main pipe 2 from the outlet 7.

[0032] Since the suction force of the centrifugal pump body 1 is mainly along the axial direction of the main pipeline 2, there are fewer impurities accumulated at the horizontal filter screen 8 due to the suction force. In addition, the area of ​​the outlet 7 and the horizontal filter screen 8 is set appropriately, so even if impurities are attached to the horizontal filter screen 8, it can be ensured that the centrifugal pump body 1 does not need to be stopped for cleaning during a single use, and can be adjusted according to the specific usage conditions.

[0033] The bottom of the outer box 3 has a through groove, and a cover plate 17 is snapped into the inside of the through groove. After use, the operator can open the cover plate 17 and use the through groove to centrally process the impurities in the outer box 3. Compared with cleaning the vertical filter screen 6, cleaning the outer box 3 is more convenient.

[0034] By setting up structures such as the outer box 3, the inlet 5, and the vertical filter screen 6, the centrifugal pump can simultaneously filter and collect particulate impurities under the drive of water flow, thereby improving the efficiency of the centrifugal pump.

[0035] A generator 12 is installed on the side of the vertical filter screen 6 near the centrifugal pump body 1. A top rod 14 is fixedly connected to the inner wall of the main pipe 2. The generator 12 is fixedly installed on the top rod 14. The shaft 9 is connected to the generator 12.

[0036] The power generation device 12 includes a stator, rotor and other structures. It is relatively small in size and is waterproof and sealed. The power generation device 12 is equipped with a wire 13 that extends to the outside of the main pipe 2. The power generation device 12 converts the kinetic energy of water into electrical energy. A battery can be installed in conjunction with the wire 13 to store the electrical energy, or it can be supplied to the centrifugal pump body 1.

[0037] When the centrifugal pump body 1 is running, the impeller 10 drives the shaft 9 to rotate under the push of the water flow, and the power generation equipment 12 operates, converting the kinetic energy of the water into electrical energy and making effective use of the electrical energy.

[0038] The inner diameters of the first connector 15 and the second connector 16 are the same, while the inner diameter of the main pipe 2 is larger than that of the first connector 15 and the second connector 16. Since the main pipe 2 is equipped with structures such as the power generation equipment 12, and the inner diameter of the main pipe 2 is larger than that of the first connector 15 and the second connector 16, it can ensure that the main pipe 2 still has a large flow area, thus ensuring the stability of water transportation.

Claims

1. A centrifugal pump with a filtration structure, comprising a centrifugal pump body (1), characterized in that: The centrifugal pump body (1) is provided with a main pipe (2) connected to its water inlet end. The bottom of the main pipe (2) is fixedly connected to an outer box (3). The two ends of the bottom of the main pipe (2) are respectively provided with an inlet groove (5) and an outlet groove (7). The inlet groove (5) is far away from the centrifugal pump body (1). The inlet groove (5), the inner cavity of the outer box (3) and the outlet groove (7) form a flow channel (4). A horizontal filter screen (8) is installed inside the outlet groove (7). The main pipe (2) is equipped with a vertical filter screen (6), and the bottom end of the vertical filter screen (6) corresponds to the end of the inlet groove (5) that is close to the centrifugal pump body (1). A shaft (9) is rotatably installed on the vertical filter screen (6), and a sling (11) corresponding to the inlet groove (5) is fixedly connected to the shaft (9). The shaft (9) is fixedly connected to a blade (10) at the end away from the centrifugal pump body (1).

2. A centrifugal pump with a filtration structure according to claim 1, characterized in that: There is a gap between the belt (11) and the vertical filter screen (6).

3. A centrifugal pump with a filtration structure according to claim 1, characterized in that: A power generation device (12) is provided on the side of the vertical filter screen (6) near the centrifugal pump body (1). A top rod (14) is fixedly connected to the inner wall of the main pipe (2). The power generation device (12) is fixedly installed on the top rod (14). The shaft (9) is connected to the power generation device (12).

4. A centrifugal pump with a filtration structure according to claim 3, characterized in that: The power generation equipment (12) is provided with a conductor (13), and the conductor (13) extends to the outside of the main pipe (2).

5. A centrifugal pump with a filtration structure according to claim 1, characterized in that: The two ends of the main pipe (2) are respectively connected to the first connector (15) and the second connector (16). The end of the first connector (15) away from the main pipe (2) is connected to the water inlet of the centrifugal pump body (1). The inner diameters of the first connector (15) and the second connector (16) are the same, and the inner diameter of the main pipe (2) is greater than the inner diameters of the first connector (15) and the second connector (16).

6. A centrifugal pump with a filtration structure according to claim 1, characterized in that: The bottom of the outer box (3) is provided with a through groove, and a cover plate (17) is snapped into the inside of the through groove.

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