Novel floating type flow water pump

Abstract

The utility model discloses a novel floating type flow water pump, and relates to the technical field of hydraulic pumps. The device comprises a propeller and a propeller output shaft connected with the propeller, and further comprises a bearing arranged on the propeller output shaft, an equipment cavity connected with the bearing, a connecting frame arranged at the end, away from the propeller, of the equipment cavity, and a hollow buoy connected with the connecting frame. The propeller protection cover surrounds the propeller and is connected with the hollow buoy; the hollow buoy is arranged at the upper end of the propeller protection cover; and a water pump and a kinetic energy transmission mechanism capable of transmitting kinetic energy on an output shaft of the propeller to the water pump are arranged in the equipment cavity. Due to the design of the hollow buoy and the propeller protection cover, complex parts such as a middle partition plate, a hollow retention rope and an additional slag blocking net in the prior art are omitted, the number of parts is greatly reduced, the overall structure is simplified, and the manufacturing cost and the maintenance difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pump technology, specifically a novel floating water pump. Background Technology

[0002] Existing floating water pump technologies, such as the applicant's authorized utility model patent "A Floating All-Water-Condition Flow Pump" (Publication No.: CN221820217U), use a propeller to receive water flow power to drive the pump. However, in practical product applications, it has the following drawbacks: It requires a central baffle and hollow fixing rope to maintain stability, resulting in a large number of parts, complex structure, and high manufacturing costs; the propeller protective cover is a closed-loop structure, making it easy for floating debris (such as aquatic plants, plastic bags, etc.) to become entangled on the surface of the propeller and protective cover, requiring additional debris netting, further increasing costs and maintenance difficulty; the torque generated by the rotating propeller can easily cause the entire device to overturn, affecting normal operation; the lack of an effective buoyancy and gravity balance design makes it difficult for the device to maintain a vertical sinking state; the narrow inlet design, requiring connection through an inlet pipe, results in high water flow resistance, limiting the pump's head and flow rate. To solve the above problems, the applicant proposes a new type of floating water pump with a simple structure, low manufacturing cost, flexible deployment and retraction, and stronger adaptability. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a new type of floating water pump that is low in manufacturing cost, simple in structure, and easy to maintain.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A novel floating water pump includes a propeller and a propeller output shaft connected to the propeller, a bearing disposed on the propeller output shaft, a device cavity connected to the bearing, a connecting frame disposed at the end of the device cavity away from the propeller, a hollow float connected to the connecting frame, and a propeller protective cover surrounding the propeller and connected to the hollow float; the hollow float is disposed at the upper end of the propeller protective cover; a water pump and a kinetic energy transmission mechanism capable of transferring kinetic energy from the propeller output shaft to the water pump are disposed inside the device cavity;

[0006] The bottom of the equipment cavity is provided with a water inlet that communicates with the water pump, and the connecting frame is provided with a water outlet, and a pipe is provided inside the connecting frame that is connected to the water pump.

[0007] Furthermore, the kinetic energy transmission mechanism includes a coupling connected to the propeller output shaft and a gearbox connected to the coupling; the gearbox is connected to the water pump via a gearbox output shaft thereon.

[0008] Furthermore, the lower part of the propeller protective cover has a discontinuous structure, forming a gap.

[0009] Furthermore, a small hole is provided on each side of the lower part of the propeller protective cover, and a weight is placed in the small hole.

[0010] Furthermore, the propeller protective cover has an irregularly shaped horn-shaped structure, with the opening width on the water-facing side being greater than the opening width on the back side.

[0011] Furthermore, the water pump is, but is not limited to, a vane pump, a centrifugal pump, or a gear pump, the water inlet is a filter screen, and there is no obstruction between the water pump and the water inlet.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) Compared with the prior art (CN221820217U), the design of the hollow float and propeller protective cover in this utility model eliminates the middle partition in the prior art.

[0014] (2) Compared with the prior art, the present invention eliminates the hollow fixing rope, reducing the manufacturing difficulty and cost of the product.

[0015] (3) Compared with the prior art, this utility model also eliminates the need for additional complex components such as slag nets, greatly reduces the number of parts, simplifies the overall structure, and reduces manufacturing costs and maintenance difficulty.

[0016] (4) The propeller protective cover adopts a bottom-disconnected structure. Through the repeated scraping action of the propeller on the entangled debris when it rotates, combined with the water flow flushing at the opening below the protective cover, the self-cleaning function is achieved, which significantly reduces the risk of floating debris accumulation and can eliminate the need for the propeller slag net in the existing technology.

[0017] (5) The propeller guard adopts an irregular horn-shaped opening design (the opening width on the water-facing side is greater than that on the back side), which can enhance the water flow collection efficiency to improve the propeller kinetic energy, significantly increase the scouring force of the flowing water, and significantly improve the pump head and water volume.

[0018] (6) In this utility model, by opening small holes on both sides of the lower end of the propeller protective cover and placing heavy objects, the buoyancy generated by the hollow float and the heavy objects placed in the small holes of the propeller protective cover are balanced. This ensures that the device sinks stably to a suitable depth to be washed by the water flow, and can also effectively counteract the torque generated by the rotation of the propeller to prevent the device from overturning. At the same time, the conical structure at the top of the hollow float can block large floating objects, improving concealment and environmental adaptability.

[0019] (7) The device cavity of this utility model adopts a kinetic energy transmission mechanism that combines a coupling and a gearbox. The speed output can be flexibly adjusted according to the water flow speed. It is compatible with various types of water pumps (such as vane pumps, centrifugal pumps, etc.). With the filter screen straight-through inlet design, the water flow resistance is reduced, and the head, flow rate and energy conversion efficiency are significantly improved. It is applicable to a wide range of flow velocities (0.25-2.5 m / s). Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0021] Figure 2 This is a longitudinal section view of the lower part of the propeller protective cover of this utility model;

[0022] Figure 3 Cross-sectional view of an irregularly shaped propeller shield;

[0023] Figure 4 This is a schematic diagram showing the positional relationship between the propeller protective cover and the propeller;

[0024] Figure 5 This is a cross-sectional view of the equipment cavity of this utility model;

[0025] Figure 6 This is a schematic diagram of the top of the pontoon in this utility model.

[0026] The corresponding names of the attached figures are as follows: 1-propeller, 2-equipment cavity, 3-connecting frame, 4-hollow float, 5-propeller protective cover, 6-small hole, 7-outlet, 8-propeller output shaft, 9-bearing, 10-coupling, 11-gearbox, 12-water pump, 13-inlet, 14-water pump inlet pipe, 15-outlet pipe, 16-weight. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0028] like Figure 1 As shown, this embodiment provides a novel floating water pump, including a propeller 1 that rotates under the influence of flowing water. A propeller protective cover 5 is provided outside the propeller 1, and the lower part of the propeller protective cover 5 has a split structure, forming a notch. Figure 3 As shown, the propeller guard 5 has a funnel-shaped opening structure facing the water flow direction (water-facing side), that is... Figure 3In the diagram, the distance between the openings AB facing the water flow direction is H, and the distance between the openings ab facing away from the water flow direction (back surface) is h. Since H > h, the propeller guard collects more water to wash over propeller 1, increasing its kinetic energy and consequently increasing the pump head or flow rate. Actual measurements show a pump flow rate increase of over 35%. For example... Figure 4 As shown, the propeller guard is narrower in the middle, i.e., M( Figure 4 The distance between the two nearest points C and D on the left and right sides of the propeller shield is ≤ m. Figure 4 The distance between the two furthest points c and d on the left and right sides of the propeller is calculated. This way, when debris in the water becomes entangled on the propeller's protective cover, it will be repeatedly scraped by the rotating propeller's far end, detach from the protective cover through the break below, and be washed away by the flowing water. In actual testing, debris entanglement was virtually nonexistent, eliminating the need for the original debris-blocking net compared to the previous solution.

[0029] A hollow float 4 is provided on the top of the propeller protective cover 5. The hollow float 4 is directly connected to the propeller protective cover 5 as a whole. The hollow float 4 has a hollow structure. When the device provided in this embodiment is placed in water, the hollow structure can generate buoyancy, so that the device floats in the water. Figure 6 The diagram shows the top of the hollow pontoon 4. The top of the hollow pontoon 4 has a conical structure, with the tip facing the direction of the incoming water. This structure can block and separate most large floating objects on the water surface, allowing them to pass through from both sides, thus reducing the entanglement of debris on the propeller. Actual testing revealed that this design virtually eliminates debris entanglement, showing a significant improvement in debris avoidance compared to the previous design (CN221820217U).

[0030] The propeller 1 is provided with a propeller output shaft 8 that can rotate under the drive of the propeller 1. The propeller output shaft 8 is provided with a bearing 9, and the equipment cavity 2 is connected through the bearing 9. The end of the equipment cavity 2 away from the propeller 1 is provided with a connecting frame 3. Preferably, the connecting frame 3 is U-shaped, and its other end is connected to the hollow float 4, so that the entire device is connected into a whole.

[0031] like Figure 2As shown, the propeller protective cover 5 is a hollow structure with a small hole 6 on each side of its lower part. A dense weight 16 (such as a small iron ball) is placed into the lower part of the propeller protective cover 5 through the small holes 6. The gravity generated by the weight creates a downward pull, causing the propeller 1 to sink into the water and be washed by the flowing water. This also overcomes the rotational torque of the propeller 1, preventing the entire device from rotating with it. A balance is maintained between the buoyancy generated by the hollow float 4 and the downward pull generated by the weight 16, ensuring that the top of the hollow float 4 is above water while the rest of the structure is underwater. This design provides excellent concealment while ensuring normal operation of the device. Actual testing showed that this design completely avoids the previous phenomenon of the device tumbling in the water.

[0032] Figure 5 This is a longitudinal cross-sectional view of the equipment cavity 2. The equipment cavity 2 is connected to the propeller output shaft 8 via bearing 9. The equipment cavity 2 contains the core components of this device. A coupling 10 is connected to the propeller output shaft 8, and a gearbox 11 is connected to the coupling 10. The output shaft of the gearbox 11 is connected to a water pump 12. The bottom of the equipment cavity 2 has a water inlet 13 connected to the water pump 12. This water inlet 13 is a filter screen that can filter impurities in the water. A water outlet 7 is provided on the connecting frame 3, and a pipe (hose) is installed inside the connecting frame 3 to connect to the water outlet pipe 15 of the water pump 12. The propeller 1 rotates under the flushing of the water. The propeller output shaft 8 rotates along with it and transmits kinetic energy to the gearbox 11 through the coupling 10. The gearbox 11 increases the rotation speed and then transmits the kinetic energy of the rotation speed to the water pump 12. Figure 5 In the attached diagram, reference numeral 14 indicates the water pump inlet pipe. The water pump inlet pipe 14 is unobstructed and flows smoothly into the water inlet 13 at the bottom of the outer shell of the equipment cavity 2. Compared with the previous technical solution, the previously specially designed slag-blocking net has been completely eliminated.

[0033] Actual tests were conducted on the device provided in this embodiment, and it was found that the propeller speed range under different water flow velocities is basically consistent with the allowable fluctuation range of the normal operating speed of most types of water pumps. Therefore, a gearless transmission is usually used to increase the speed provided by the propeller output shaft, which can meet the needs of water pump operation. However, when the water pump fails to operate normally, the rotational energy generated by the propeller needs to be adjusted and increased through a continuously variable transmission or a geared transmission to output a speed that meets the normal operating speed of the water pump, so that different water pumps can operate normally.

[0034] The minimum required flow velocity of this device in natural rivers is 0.25 m / s. Flow velocities below 0.25 m / s will result in insufficient power, necessitating an increase in the propeller diameter, which in turn increases the device's size and cost, rendering it impractical. On the other hand, natural rivers with flow velocities exceeding approximately 2.5 m / s are extremely rare, and the water flow is destructive, making the use of a water pump unsuitable. Therefore, the optimal operating flow velocity for this device is 0.25-2.5 m / s, with the measured propeller speed difference between the minimum and maximum flow velocities being only about twice.

[0035] In addition, to prevent the device from being washed away by water during operation, the device provided in this embodiment can be connected to the connecting frame with a rope.

[0036] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A novel floating water pump, comprising a propeller (1) and a propeller output shaft (8) connected to the propeller, characterized in that, It also includes a bearing (9) disposed on the propeller output shaft (8), an equipment cavity (2) connected to the bearing (9), a connecting frame (3) disposed at the end of the equipment cavity (2) away from the propeller (1), a hollow float (4) connected to the connecting frame (3), and a propeller protective cover (5) surrounding the propeller (1) and connected to the hollow float (4); the hollow float (4) is disposed at the upper end of the propeller protective cover (5); a water pump (12) and a kinetic energy transmission mechanism that can transmit the kinetic energy on the propeller output shaft (8) to the water pump (12) are disposed in the equipment cavity (2); The bottom of the equipment cavity (2) is provided with an inlet (13) that communicates with the water pump (12), and the connecting frame (3) is provided with an outlet (7), and a pipe is provided in the connecting frame (3) to connect with the water pump (12).

2. The novel floating water pump according to claim 1, characterized in that, The kinetic energy transmission mechanism includes a coupling (10) connected to the propeller output shaft (8) and a gearbox (11) connected to the coupling (10); the gearbox (11) is connected to the water pump (12) via the gearbox output shaft thereon.

3. A novel floating water pump according to claim 2, characterized in that, The lower part of the propeller protective cover (5) has a disconnected structure, forming a gap.

4. A novel floating water pump according to claim 3, characterized in that, The propeller protective cover (5) has a small hole (6) on each side of its lower part, and a weight (16) is placed in the small hole (6).

5. A novel floating water pump according to claim 4, characterized in that, The propeller protective cover (5) is an irregularly shaped horn-shaped structure, with the opening width on the water-facing side being greater than the opening width on the back side.

6. A novel floating water pump according to claim 5, characterized in that, The water pump (12) is a vane pump, centrifugal pump or gear pump, the water inlet (13) is a filter screen, and there is no obstruction between the water pump (12) and the water inlet (13).

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