Multi-stage water diversion device for centrifugal pump

Abstract

The utility model discloses a multistage water diversion device for a centrifugal pump, which comprises a water diversion box, the water diversion box comprises a water inlet, a water outlet and an inner cavity, the water inlet is externally connected with a plurality of telescopic water diversion pipe fittings, the telescopic water diversion pipe fittings can be overlapped and extended, and a pressure detection component is additionally arranged in the inner cavity. The water inlet is located in the upper portion of the left side wall of the box body and adopts a DN100 standard flange connector, the water outlet is formed in the lower portion of the right side wall, and the telescopic water diversion pipe fitting is connected with the water inlet through a quick connector. The pipe fitting is formed by superposing three standard sections, the length of a telescopic section is 1.2 m, a tubular telescopic structure is adopted, and the total length can reach 3.6 m after the pipe fitting is unfolded; the pressure detection assembly gives an alarm when the water pressure in the inner cavity reaches a threshold value.

Description

Technical Field

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

[0002] In outdoor water conservancy operations, the efficiency and environmental adaptability of water diversion devices have long faced technical bottlenecks. Traditional fixed water diversion systems are limited by rigid structures, their form and function constrained within a pre-set physical framework, making them difficult to cope with complex and ever-changing geographical conditions in the field. When the distance between the work site and the water source changes dynamically, such devices often expose fatal defects in spatial matching—either due to redundant pipe length causing resource waste and operational burden, or due to insufficient length forcing cumbersome mechanical splicing, or even due to undulating terrain causing fluid transmission interruptions. This structural contradiction is particularly prominent in irregular terrains such as hills and mining areas, turning what should be a smooth water conveyance process into an inefficient cycle of repeated struggle between manpower and equipment.

[0003] In existing technologies, the extension function of the pipe body mostly relies on external splicing components. This not only introduces an additional burden of managing connectors, but also accumulates the risk of structural damage during repeated disassembly and assembly. Stress concentration at the splice points often leads to the latent growth of micro-cracks, ultimately causing the pipe body to fail unexpectedly under pressure fluctuations. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a multi-stage priming device for centrifugal pumps.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a multi-stage water priming device for a centrifugal pump, including a water priming tank. The water priming tank includes an inlet, an outlet, and an inner cavity. The inlet is externally connected to a telescopic water priming pipe, and multiple telescopic water priming pipes can be stacked and extended. A pressure detection component is installed in the inner cavity.

[0007] As a preferred technical solution of this utility model, the water inlet external pipe fitting connector is fixedly connected to the water inlet on the right side by a flange, and a first quick-release connector is provided on the left side. The first quick-release connector is in the shape of a ring, and a number of magnetic plates are arranged in a ring along the center of the outer side of the first quick-release connector.

[0008] As a preferred technical solution of this utility model, the telescopic water inlet pipe includes an intake section, a telescopic section, and a discharge section. Both the intake section and the discharge section are provided with a second quick-release connector. The second quick-release connector has the same structure as the first quick-release connector. The intake section is also provided with a structural retaining iron ring. The structural retaining iron ring is also tightly provided in the discharge section. The first quick-release connector and the second quick-release connector are magnetically connected. Each of the second quick-release connectors can be magnetically connected to each other to achieve the function of splicing multiple telescopic water inlet pipes.

[0009] As a preferred technical solution of this utility model, the inhalation section is provided with a fan-shaped propeller, the telescopic section is composed of multiple folded hoses, each folded hose has a fixing ring at the crest, and six fixing rings are distributed in a ring, with a structural support rod passing through each fixing ring.

[0010] As a preferred technical solution of this utility model, the first and second ends of the structural support rod are fixed on the structural support iron ring. The overall structure of the structural support rod is divided into a first telescopic tube and a second telescopic tube. The second telescopic tube is sleeved on the first telescopic tube. The structural support rod can be extended or shortened as a whole through the cooperation of the first telescopic tube and the second telescopic tube. Both the first telescopic tube and the second telescopic tube are made of carbon fiber.

[0011] As a preferred embodiment of this utility model, the pressure detection component is equipped with a buzzer, which emits an alarm sound when the water pressure in the inner cavity reaches a threshold.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The water inlet is located on the upper left side wall of the tank, using a DN100 standard flange interface. The water outlet is located on the lower right side wall. The telescopic water inlet fitting is connected to the water inlet via a quick connector. This fitting consists of 3 standard sections stacked together, with a telescopic section length of 1.2m. It adopts a tubular telescopic structure, and the total length after unfolding can reach 3.6m.

[0014] 2. The carbon fiber material allows the structural support rod to bend to a certain extent, thereby enabling the pipe connector to adapt to more diverse usage scenarios and increasing its durability.

[0015] 3. Once the pump body and inner cavity are filled with water, the water pressure in the inner cavity gradually increases due to the continuous action of the fan-shaped propeller until it reaches the predetermined pressure threshold, triggering the pressure detection component and issuing an alarm sound to notify the operator to shut down the fan-shaped propeller so that the pressure inside the water tank tends to be within a safe value. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a first partial structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the second partial structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the third partial structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the water tank of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure maintaining rod of this utility model;

[0023] In the diagram: 1. Water tank; 2. Inlet; 3. Outlet; 4. Inner cavity; 5. Telescopic water inlet pipe; 6. Detection assembly; 7. Pipe connector; 71. Flange; 8. First quick-release connector; 9. Magnetic suction plate; 10. Suction section; 11. Telescopic section; 12. Discharge section; 13. Second quick-release connector; 14. Fan-shaped propeller; 15. Fixing ring; 16. Structural support ring; 17. Structural support rod; 18. First telescopic tube; 19. Second telescopic tube; 20. Buzzer. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] In the attached diagram, all identical reference numerals refer to the same components.

[0026] like Figure 1-6 As shown, this utility model provides a multi-stage water priming device for a centrifugal pump, including a water priming tank 1. The water priming tank 1 includes an inlet 2, an outlet 3, and an inner cavity 4. The inlet 2 is externally connected to a telescopic water priming pipe 5. Multiple telescopic water priming pipes 5 can be stacked and extended. A pressure detection component 6 is installed in the inner cavity 4.

[0027] In this invention, the water tank 1 is welded from 304 stainless steel and has a rectangular structure. The inlet 2 is located on the upper left side wall of the tank and uses a DN100 standard flange 71 interface. The outlet 3 is located on the lower right side wall. The telescopic water inlet pipe 5 is connected to the inlet 2 via a quick connector. This pipe is composed of three standard sections stacked together. The telescopic section 11 is 1.2m long and uses a tubular telescopic structure, with a total length of up to 3.6m after unfolding. The inner wall of each section can be coated with a polyurethane wear-resistant coating with a thickness of 0.8-1.2mm, which can withstand the impact of a flow velocity of 10m / s.

[0028] In an optional embodiment, the inlet 2 is connected to a fitting connector 7 on the outside. The right side of the fitting connector 7 is fixedly connected to the inlet 2 via a flange 71, and the left side is provided with a first quick-release connector 8. The first quick-release connector 8 is annular in shape, and a plurality of magnetic plates 9 are arranged in a circular row along the center of the outer side of the first quick-release connector 8.

[0029] It should be noted that the right flange 71 of the pipe connector 7 is fixed to the inlet 2 by M12 bolts. The left quick-release connector 8 has an outer diameter of Φ112mm, an inner diameter of Φ98mm, and a 1:5 taper in the middle transition tapered tube. The surface is anodized. Six neodymium iron boron magnetic absorbing plates 9 are equidistantly embedded on the outer circumference of the first quick-release connector 8. Each plate is 20×10×3mm in size and has a magnetic energy product ≥45MGOe. The magnetic absorbing plates 9 are arranged at 30° intervals along the circumference. A silicone buffer pad is provided at the bottom of the mounting groove. In actual operation, when the second quick-release connector 13 (described in subsequent embodiments) approaches, the magnetic absorbing plates 9 can generate an adsorption force of ≥20N within a distance of 5mm, achieving rapid positioning. During disassembly, a 30-50N axial tensile force is applied to separate the connectors. The connector loss rate is <0.1 times / thousandth of operations.

[0030] In an optional embodiment, the telescopic water inlet pipe 5 includes an intake section 10, a telescopic section 11, and an outlet section 12. Both the intake section 10 and the outlet section 12 are provided with a second quick-release connector 13. The second quick-release connector 13 has the same structure as the first quick-release connector 8. The intake section 10 is also provided with a structural retaining iron ring 16. The structural retaining iron ring 16 is also tightly provided in the outlet section 12. The first quick-release connector 8 and the second quick-release connector 13 are magnetically connected. Each of the second quick-release connectors 13 can be magnetically connected to each other to achieve the function of splicing multiple telescopic water inlet pipes 5.

[0031] It should be noted that the suction section 10 is equipped with a second quick-release connector 13, whose structure is mirror-symmetrical to the first quick-release connector 8. When the distance between the two is 50mm, the magnetic attraction force is ≥150N. The coaxial welded structure at the end of the discharge section 12 maintains the iron ring 16, with an outer diameter of Φ120mm and an inner diameter of Φ105mm, and is laser-cut from Q345B steel plate. The telescopic section 11 consists of several sections of high-elasticity silicone folded tubes connected in series. The unfolded length of a single section is 800mm, and the compressed height is 120mm. When multiple sections are spliced, the second quick-release connector 13 of the suction section 10 is magnetically locked with the second quick-release connector 13 of the adjacent pipe section, forming a continuous sealed flow channel. The maximum extension length of the system reaches 12m.

[0032] In an optional embodiment, the inhalation section 10 is provided with a fan-shaped propeller 14, and the telescopic section 11 is composed of multiple folded hoses. Each folded hose has a fixing ring 15 at its crest. Six fixing rings 15 are distributed in a ring, and a structural support rod 17 passes through each fixing ring 15.

[0033] It should be noted that the propeller shaft of the fan-shaped propeller 14 is supported by a double-row angular contact bearing, and the bearing housing is welded and fixed to the inner wall of the tube. A fixing ring 15 is provided at the crest of the folded hose, with a ring thickness of 8mm and 6 Φ8mm through holes. The structural support rod 17 passes through all the fixing rings 15, and the initial preload of the rod is set to 80N to prevent the hose from collapsing due to the suction of the internal water flow.

[0034] In an optional embodiment, the first end of the structural support rod 17 is fixed on the structural support iron ring 16. The overall structure of the structural support rod 17 is divided into a first telescopic tube 18 and a second telescopic tube 19. The second telescopic tube 19 is sleeved on the first telescopic tube 18. The structural support rod 17 is extended and shortened as a whole through the cooperation of the first telescopic tube 18 and the second telescopic tube 19. Both the first telescopic tube 18 and the second telescopic tube 19 are made of carbon fiber.

[0035] It should be noted that the first telescopic tube 18 is a solid carbon fiber rod with a diameter of Φ6mm, a length of 1.2m, and a tensile strength ≥5,200MPa. The second telescopic tube 19 is a hollow tube with an inner diameter of Φ6.2mm, a wall thickness of 0.6mm, and an anodized surface treatment. The carbon fiber material allows the structural support rod 17 to bend to a certain extent, thereby allowing the tube connector 7 to adapt to more diverse usage scenarios and increasing its durability.

[0036] In an optional embodiment, the pressure detection component 6 is provided with a buzzer 20, which sounds an alarm when the water pressure in the inner cavity 4 reaches a threshold.

[0037] It should be noted that when the pump body is filled with water and the inner cavity 4 is also filled, the water pressure in the inner cavity 4 gradually increases due to the continuous action of the fan-shaped propeller 14 until it reaches the predetermined pressure threshold, triggering the pressure detection component 6, the buzzer 20 and emitting an alarm sound, notifying the operator to shut down the fan-shaped propeller 14 so that the internal pressure of the water tank 1 tends to be within a safe value.

[0038] The working principle of this utility model is as follows: This device achieves dynamic water delivery adaptation through a multi-stage telescopic water intake structure. During operation, the operator unfolds the telescopic water intake pipe 5 according to the distance to the water source: each segment is automatically adsorbed and spliced ​​through magnetic quick-release connectors to form a continuous flow channel. The fan-shaped propeller 14 of the suction section 10 rotates at high speed, accelerating the water flow into the telescopic section 11; the folded hose extends step by step under the tension control of the structural support rod 17. The water pressure in the inner cavity 4 gradually increases until it reaches the predetermined pressure threshold, triggering the pressure detection component 6 and emitting an alarm sound, notifying the operator to close the fan-shaped propeller 14 so that the internal pressure of the water tank 1 tends to be within a safe value. The magnetic plate array 9 generates a directional magnetic field when the connector is engaged, ensuring precise alignment and sealing between pipe segments, while the carbon fiber structural support rod 17 compensates for the pipe deformation caused by terrain undulations through telescopic adjustment, maintaining the rigidity of the system. The entire device achieves adaptive water intake in complex outdoor environments through the synergistic effect of mechanical extension, fluid acceleration, and intelligent feedback.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-stage water induction device for a centrifugal pump comprising a water induction box (1), characterized in that, The water guide box (1) includes a water inlet (2), a water outlet (3), and an inner cavity (4), the water inlet (2) is externally connected with a telescopic water guide pipe (5), the telescopic water guide pipe (5) can be extended by multiple stacking, and the inner cavity (4) is provided with a pressure detection assembly (6).

2. A multi-stage inducer for a centrifugal pump as defined in claim 1, wherein The water inlet (2) is externally connected with a pipe connector (7), the right side of the pipe connector (7) is fixedly connected with the water inlet (2) through a flange (71), and the left side is provided with a first quick release connector (8), the first quick release connector (8) is annular, and a plurality of magnetic pieces (9) are arranged on the outer side of the first quick release connector (8) along the center of the annular.

3. A multi-stage inducer for a centrifugal pump as defined in claim 2, wherein The telescopic water guide pipe (5) includes an intake section (10), a telescopic section (11) and a discharge section (12), the intake section (10) and the discharge section (12) are provided with a second quick release connector (13), the second quick release connector (13) is the same as the first quick release connector (8), the intake section (10) is further provided with a structure maintaining iron ring (16), the structure maintaining iron ring (16) is arranged in the discharge section (12), the first quick release connector (8) and the second quick release connector (13) are magnetically connected, and each second quick release connector (13) can be magnetically connected with each other to achieve the effect of splicing multiple telescopic water guide pipes (5).

4. A multi-stage inducer for a centrifugal pump as defined in claim 3, wherein The intake section (10) is internally provided with a fan-shaped propeller (14), the telescopic section (11) is composed of multiple folding hoses, each folding hose is provided with a fixing ring (15) at the wave peak, the fixing ring (15) is annularly distributed with six, and each fixing ring (15) has a structure maintaining rod (17) penetrating therein.

5. A multi-stage inducer for a centrifugal pump as defined in claim 4, wherein The structure maintaining rod (17) is firstly fixed on the structure maintaining iron ring (16), the structure maintaining rod (17) is divided into a first telescopic pipe (18) and a second telescopic pipe (19) in whole structure, the second telescopic pipe (19) is sleeved on the first telescopic pipe (18), and the structure maintaining rod (17) is extended or shortened as a whole through cooperation of the first telescopic pipe (18) and the second telescopic pipe (19), and the first telescopic pipe (18) and the second telescopic pipe (19) are both made of carbon fiber material.

6. A multi-stage inducer for a centrifugal pump as defined in claim 1, wherein The pressure detection assembly (6) is provided with a buzzer (20), and the buzzer (20) emits an alarm sound when the water pressure in the inner cavity (4) reaches a threshold value.

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