Anti-overheat water pump shell

Abstract

The utility model discloses a kind of overheating-preventing water pump housings, belong to water pump technical field, comprising: pump shell, the bottom of the pump shell is equipped with mounting seat, both sides of the pump shell are equipped with connecting pipe, both sides of the top of the pump shell are equipped with two supports, rotatingly installed with heat dissipation shaft on the support, heat dissipation fan blade is detachably installed in heat dissipation shaft by dismounting component, drive assembly is equipped between connecting pipe and heat dissipation shaft. When centrifugal pump works, high-speed flowing water flow passes through connecting pipe, and water wheel on driving shaft will be impacted, driving shaft synchronous rotation is driven;Driving shaft is transmitted to transmission shaft by the transmission cooperation of synchronous pulley and synchronous belt;Transmission shaft changes transmission direction by engaging bevel gear, drives heat dissipation shaft to drive heat dissipation fan blade high-speed rotation.This design does not need to additionally install motor or power supply, completely relies on centrifugal pump itself water flow power to drive fan blade, is energy-saving and environment-friendly.

Description

Technical Field

[0001] This utility model relates to an overheat-proof water pump housing, belonging to the field of water pump technology. Background Technology

[0002] Centrifugal pumps, as general-purpose machines that rely on the principle of centrifugal force to transport liquids or fluids containing suspended solid particles, are core supporting equipment for fluid transport systems in industries such as industry, agriculture, municipal administration, and energy. Their operational stability is directly related to the continuity of key processes in various industries. In industrial settings, they provide power for factory cooling water circulation systems and ensure temperature control of production equipment. In agriculture, they are the core of large-scale irrigation operations, determining the efficiency of farmland water supply. In municipal engineering, they support the stability of water pressure in urban water supply networks, maintaining the normal operation of residents' lives and public facilities.

[0003] As the requirements for fluid transport efficiency increase across various sectors, the operating load of centrifugal pumps is gradually increasing, and the heat generation of their core component—the motor—is also rising significantly. If the motor heat cannot be dissipated in time, it will not only lead to decreased motor efficiency and increased energy consumption, but may also cause malfunctions such as aging of the motor insulation layer and coil burnout. In severe cases, it may even cause the entire centrifugal pump to shut down, resulting in huge losses to production and daily life. Therefore, motor heat dissipation has become a key factor in ensuring the long-term stable operation of centrifugal pumps.

[0004] Currently, the mainstream cooling method for centrifugal pump motors in the industry involves adding multiple cooling fins to the surface of the motor casing. These fins increase the heat dissipation area, and heat transfer is achieved through natural convection, where hot air rises and cool air is replenished from below. However, this cooling method has significant drawbacks: First, the air velocity during natural convection is extremely low, typically less than 0.5 m / s, resulting in slow heat transfer that is difficult to match the motor's heat generation rate under high load conditions. Second, the narrow gaps between the cooling fins cause hot air, due to its lower density, to tend to accumulate and become trapped within these gaps, forming a "thermal barrier" that hinders the entry of cool air. Third, the presence of this "thermal barrier" significantly reduces the heat exchange efficiency between the cooling fins and the surrounding air, leading to a continuous increase in the motor surface temperature. This fails to effectively solve the motor overheating problem, especially in high-temperature environments or long-term continuous operation scenarios, where this deficiency is more pronounced and has become a major bottleneck restricting the improvement of centrifugal pump performance and the extension of its service life. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a water pump housing that is resistant to overheating.

[0006] The technical solution adopted by this utility model to solve its technical problem is: An overheat-resistant water pump housing includes: a pump housing, a mounting base installed at the bottom of the pump housing, connecting pipes installed on both sides of the pump housing, two brackets installed on both sides of the top of the pump housing, a heat dissipation shaft rotatably mounted on the brackets, a heat dissipation fan blade detachably mounted on the heat dissipation shaft via a disassembly assembly, and a drive assembly provided between the connecting pipes and the heat dissipation shaft.

[0007] Preferably, the disassembly and assembly assembly includes a limiting ring, which is installed on the side of the heat dissipation shaft away from the bracket. The outer wall of the heat dissipation shaft located on the side of the limiting ring has an external thread. The heat dissipation shaft passes through the heat dissipation fan blades and is rotatably mounted with a threaded ring through the external thread.

[0008] Preferably, a rubber sleeve is installed on the outer wall of the threaded ring.

[0009] Preferably, the drive assembly includes a drive shaft, which is rotatably mounted between the two ends of the connecting pipe. A water wheel is fixedly mounted in the middle of the outer side wall of the drive shaft. A transmission shaft is rotatably mounted at the upper end of the bracket. Synchronous pulleys are installed between the transmission shaft and the drive shaft. The two synchronous pulleys are driven by a synchronous belt. Bevel gears are installed on the side of the heat dissipation shaft away from the heat dissipation fan blades and on the transmission shaft. The two bevel gears mesh with each other.

[0010] Preferably, the outer wall of the water turbine is provided with a protective layer.

[0011] Preferably, the cooling fan blades are made of plastic.

[0012] Compared with existing technologies, the advantages of this invention are as follows: When the centrifugal pump is working, the high-speed flowing water passes through the connecting pipe and impacts the water wheel on the drive shaft, causing the drive shaft to rotate synchronously. The drive shaft transmits power to the transmission shaft through the transmission cooperation of the synchronous pulley and synchronous belt. The transmission shaft then changes the transmission direction through meshing bevel gears, driving the cooling shaft to drive the cooling fan blades to rotate at high speed. This design does not require an additional motor or power supply, relying entirely on the power of the water flow delivered by the centrifugal pump to drive the fan blades. It is energy-saving and environmentally friendly, and can ensure that the speed of the cooling fan blades is linked to the water flow speed (i.e., the centrifugal pump operating condition)—the higher the water flow speed, the more heat the motor generates, the faster the fan blade speed, and the stronger the heat dissipation capacity. The active blowing effect of the cooling fan blades can quickly disperse the hot air around the motor, completely breaking the "thermal barrier" in the gaps between traditional heat dissipation fins, increasing the air flow rate on the motor surface, and improving the heat transfer efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the drive component structure of this utility model; Figure 3 This is a schematic diagram of the disassembly and assembly components of this utility model.

[0015] In the diagram: 1. Pump casing; 2. Mounting base; 3. Connecting pipe; 4. Bracket; 5. Cooling shaft; 6. Assembly / disassembly assembly; 7. Cooling fan blades; 8. Drive assembly; 601. Limiting ring; 602. External thread; 603. Threaded ring; 604. Rubber sleeve; 801. Drive shaft; 802. Water impeller; 803. Transmission shaft; 804. Synchronous pulley; 805. Synchronous belt; 806. Bevel gear. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-2 This utility model provides a technical solution: An overheat-resistant water pump housing includes: a pump housing 1, a mounting base 2 installed at the bottom of the pump housing 1, connecting pipes 3 installed on both sides of the pump housing 1, two brackets 4 installed on both sides of the top of the pump housing 1, a heat dissipation shaft 5 rotatably mounted on the brackets 4, a heat dissipation fan blade 7 detachably mounted on the heat dissipation shaft 5 through a disassembly assembly 6, and a drive assembly 8 provided between the connecting pipes 3 and the heat dissipation shaft 5.

[0018] Please see Figure 3This utility model provides a technical solution: In this embodiment, the disassembly and assembly component 6 includes a limiting ring 601, which is installed on the side of the heat dissipation shaft 5 away from the bracket 4. The outer wall of the heat dissipation shaft 5 located on the side of the limiting ring 601 has an external thread 602. The heat dissipation shaft 5 passes through the heat dissipation fan blade 7 and is rotatably installed with a threaded ring 603 through the external thread 602. The limiting ring 601 and the heat dissipation shaft 5 are connected by integral molding or welding. Its inner diameter is completely matched with the outer diameter of the heat dissipation shaft 5, which can form a precise axial limit for the heat dissipation fan blade 7 sleeved on the heat dissipation shaft 5, so as to avoid the heat dissipation fan blade 7 from shifting towards the bracket 4 due to centrifugal force during high-speed rotation, ensuring the stability of the fan blade rotation trajectory and preventing collision with the bracket 4 or the pump housing 1. The pitch of the external thread 602 is designed to be 2-3mm, which ensures the tightness of the connection between the threaded ring 603 and the heat dissipation shaft 5, and avoids jamming when the threaded ring 603 is tightened. At the same time, the length of the external thread 602 is slightly greater than the thickness of the heat dissipation fan blade 7, so that the threaded ring 603 can completely fit the end face of the heat dissipation fan blade 7 after being tightened, further enhancing the fan blade fixing effect and preventing the fan blade from axially moving during rotation.

[0019] Furthermore, a cross plate is installed on the side of the heat dissipation shaft 5 near the limiting ring 601, and a cross groove is opened on the inner wall of the heat dissipation fan blade 7. After the cross plate is inserted into the cross groove, rotation between the heat dissipation fan blade 7 and the heat dissipation shaft 5 can be avoided.

[0020] In this embodiment: a rubber sleeve 604 is installed on the outer wall of the threaded ring 603.

[0021] Furthermore, the rubber sleeve 604 is made of nitrile rubber, with a Shore hardness of 50-60 degrees, combining good elasticity and wear resistance.

[0022] In this embodiment: the drive assembly 8 includes a drive shaft 801, which is rotatably mounted between the two ends of the connecting pipe 3. A water wheel 802 is fixedly mounted in the middle of the outer side wall of the drive shaft 801. A transmission shaft 803 is rotatably mounted on one of the upper ends of the bracket 4. Synchronous pulleys 804 are installed between the transmission shaft 803 and the drive shaft 801. The two synchronous pulleys 804 are driven by a synchronous belt 805. Bevel gears 806 are installed on the side of the heat dissipation shaft 5 away from the heat dissipation fan blades 7 and on the transmission shaft 803. The two bevel gears 806 mesh with each other.

[0023] Furthermore, both ends of the drive shaft 801 are connected to the inner wall of the connecting pipe 3 via deep groove ball bearings. The outer ring of the bearing is interference-fitted with the connecting pipe 3, while the inner ring is transition-fitted with the drive shaft 801. This reduces frictional resistance during the rotation of the drive shaft 801, ensuring that the water turbine 802 can be efficiently driven by the water flow. The blades of the water turbine 802 adopt an arc-shaped design, with 3-4 blades. The blade curvature is adapted to the direction of water flow in the connecting pipe 3, maximizing the absorption of water flow impact and converting the kinetic energy of the water flow into the rotational kinetic energy of the drive shaft 801. The transmission efficiency can reach over 85%. The synchronous pulley 804 is made of aluminum alloy with a gear ratio of 1:1, ensuring that the drive shaft 801 and the transmission shaft 803 rotate at the same speed, avoiding speed loss during power transmission. The synchronous belt 805 is a polyurethane synchronous belt with an internal steel wire skeleton, possessing both good flexibility and tensile strength. It can adapt to long-term high-frequency transmission and does not require regular lubrication, reducing maintenance costs. The two bevel gears of 806 have a module of 2-3, and the tooth surface is carburized and quenched (hardness reaches HRC55-60), which not only ensures the stability of meshing transmission, but also improves the wear resistance of the tooth surface, avoids tooth surface wear caused by long-term meshing, and ensures that the power can be stably transmitted to the heat dissipation shaft 5, driving the heat dissipation fan blades 7 to rotate at a uniform speed.

[0024] In this embodiment: the outer wall of the water turbine 802 is provided with a protective layer.

[0025] Furthermore, the protective layer employs a nano-ceramic coating with a thickness of 50-80 μm, which is applied to the outer wall and blade surface of the water turbine 802 via plasma spraying. This nano-ceramic coating has a Mohs hardness of 9, effectively resisting the erosion and wear of suspended impurities (such as silt and metal fragments) on the water turbine surface, extending the service life of the water turbine 802 by 2-3 times. Simultaneously, the coating exhibits excellent chemical stability, tolerating water environments with pH values ​​of 4-10 (such as weak acids and alkalis that may be present in industrial circulating water and agricultural irrigation water), preventing corrosion and oxidation of the water turbine 802. In addition, the ceramic coating has a surface roughness Ra≤0.8 μm, providing good hydrophobicity, reducing water adhesion to the water turbine surface, lowering water flow resistance, and further improving the transmission efficiency of the water turbine 802.

[0026] In this embodiment: the heat dissipation fan blade 7 is made of plastic.

[0027] Furthermore, the cooling fan blade 7 is made of reinforced nylon 66 material and contains 15%-20% glass fiber reinforcement, giving the fan blade both lightweight and high strength characteristics, allowing it to rotate better.

[0028] The workflow of this embodiment is as follows: During use, water passes through the connecting pipe 3 at high speed, causing the water wheel 802 to drive the drive shaft 801 to rotate. Through the transmission of the synchronous pulley 804 and the synchronous belt 805, the transmission shaft 803 rotates. Then, through the meshing of the two bevel gears 806, the cooling shaft 5 drives the cooling fan blades 7 to rotate. The cooling fan blades 7 can blow air onto the motor part of the pump casing 1 to dissipate heat and prevent overheating. When the cooling fan blades 7 need to be replaced, the threaded ring 603 can be rotated to disengage the threaded ring 603 from the cooling shaft 5. Then the cooling fan blades 7 can be pulled out from the cooling shaft 5 for replacement. During installation, first insert the cooling fan blades 7 into the cooling shaft 5, and then screw the threaded ring 603 into the external thread 602.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water pump housing resistant to overheating, characterized in that, include: The pump housing has a mounting base at its bottom, connecting pipes on both sides, and two brackets on both sides of its top. A cooling shaft is rotatably mounted on the bracket, and a cooling fan blade can be detachably mounted on the cooling shaft via a disassembly assembly. A drive assembly is provided between the connecting pipes and the cooling shaft.

2. The overheat-resistant water pump housing according to claim 1, characterized in that, The assembly / disassembly assembly includes a limiting ring, which is installed on the side of the heat dissipation shaft away from the bracket. The outer wall of the heat dissipation shaft located on the side of the limiting ring has an external thread. The heat dissipation shaft passes through the heat dissipation fan blades and is rotatably mounted with a threaded ring through the external thread.

3. The overheat-resistant water pump housing according to claim 2, characterized in that, A rubber sleeve is installed on the outer wall of the threaded ring.

4. The overheat-resistant water pump housing according to claim 1, characterized in that, The drive assembly includes a drive shaft, which is rotatably mounted between the two ends of the connecting pipe. A water wheel is fixedly mounted in the middle of the outer side wall of the drive shaft. A transmission shaft is rotatably mounted at the upper end of the bracket. Synchronous pulleys are installed between the transmission shaft and the drive shaft. The two synchronous pulleys are driven by a synchronous belt. Bevel gears are installed on the side of the heat dissipation shaft away from the heat dissipation fan blades and on the transmission shaft. The two bevel gears mesh with each other.

5. The overheat-resistant water pump housing according to claim 4, characterized in that, The outer wall of the water turbine is provided with a protective layer.

6. The overheat-resistant water pump housing according to claim 1, characterized in that, The cooling fan blades are made of plastic.

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