Stem engine water pump
By introducing a water-cooled heat dissipation system into the stern engine water pump, and utilizing a combination design of heat absorber plates, heat exchange tubes and heat sinks, the problem of low heat dissipation efficiency was solved, and rapid heat dissipation and improved stability were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO SONEDA INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-19
AI Technical Summary
The existing stern engine water pump has low heat dissipation efficiency, which leads to long-term accumulation of high internal temperatures, affecting the stability and lifespan of the equipment.
A water-cooled heat dissipation system is adopted, which uses heat absorption plates and heat exchange tubes combined with cooling water pipes to quickly absorb and dissipate heat, and uses heat sinks to contact the air for auxiliary heat dissipation, thereby improving heat dissipation efficiency.
It achieves rapid heat dissipation, avoids heat accumulation, and improves operational stability and device lifespan.
Smart Images

Figure CN224380073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine water pump technology, specifically a stern engine water pump. Background Technology
[0002] A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy. Water pumps are mainly used to transport liquids, including water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. They can also transport gas mixtures and liquids containing suspended solids. Based on different working principles, they can be divided into positive displacement pumps, centrifugal pumps, and other types. Positive displacement pumps use changes in the volume of their working chamber to transfer energy. Centrifugal pumps use the interaction between rotating blades and water to transfer energy, and include centrifugal pumps, axial flow pumps, and mixed flow pumps.
[0003] A water pump for an engine, with publication number CN208473980U, includes a water pump bearing housing. A connecting plate and a second connecting flange are respectively installed at both ends of the water pump bearing housing. The connecting plate is movably connected to the water pump bearing housing by screws. The second connecting flange is fixedly welded to the water pump bearing housing. An impeller is movably installed at the end of the water pump bearing housing away from the second connecting flange. A water pump shaft is installed inside the water pump bearing housing. One end of the water pump shaft is fixedly connected to the impeller via a coupling, and the other end of the water pump shaft passes through the middle of the second connecting flange. The other end of the connecting plate is fixed with a water pump housing by screws. This utility model not only reduces the flow resistance and increases the cross-section of the inclined channel, thereby improving the pumping capacity and preventing knocking caused by abnormal combustion of the engine, but also effectively improves the engine power and extends the engine life. However, the above-mentioned engine water pump has low overall heat dissipation efficiency during use. It relies solely on natural heat dissipation, which makes it impossible for the internal high temperature to escape quickly. Long-term internal high temperature can easily accelerate aging and affect the efficiency of use. Therefore, it is necessary to provide a new type of stern engine water pump to solve the above technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a stern engine water pump that has the advantages of water cooling to reduce aging efficiency and improve operational stability, thus solving the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a stern engine water pump, comprising: a frame, wherein a pressure gauge is embedded inside the frame; a cooling assembly, wherein the cooling assembly includes a heat-absorbing plate, the heat-absorbing plate being fixedly installed inside the frame, an annular heat exchange tube being embedded inside the heat-absorbing plate, a cooling water pipe being fixedly connected to one end of the heat exchange tube, an inlet being fixedly connected to the outside of the cooling water pipe, an outlet being fixedly connected to the other end of the heat exchange tube, and heat dissipation fins being uniformly fixedly connected to the outside of the heat-absorbing plate. In use, the device is first... When installed in a suitable location, during operation, the heat absorption plate can quickly absorb heat from the heat source inside the device through heat transfer. At the same time, cold water enters the heat exchange tube from the inlet through the cooling water pipe. The cold water inside the heat exchange tube physically cools the heat absorption plate. After the cold water enters the heat exchange tube and heats up, it is discharged from the outlet to achieve the heat dissipation effect of the entire device. This avoids the inability to dissipate heat in time, which would affect the stability of use. At the same time, the heat sink can make the heat absorbed by the heat absorption plate come into contact with the outside air, and heat dissipation is achieved by contact with room temperature air, which can further assist in efficient heat dissipation.
[0006] Preferably, the heat-absorbing plate is fitted and installed on the outside of the heat source engine, and a muffler is fixedly connected inside the frame. The heat-absorbing plate can quickly absorb and cool the heat dissipated by the heat source, and the muffler can achieve the effect of rapid cooling of the entire device.
[0007] Preferably, the pressure gauge is provided with a shutdown device at the top. The shutdown device is vertically installed at the top of the pressure gauge and can control the engine to shut down, thus shutting down the entire device when it is not in use.
[0008] Preferably, the top of the frame is provided with a speed control handle and a start handle. The start handle can be used to start the entire device, and the speed control handle can be used to adjust the power of the engine.
[0009] Preferably, the frame is externally rotatably connected to four handles, and the frame is made of stainless steel. The handles facilitate two people to lift the entire device for operation, improving the flexibility of the entire device.
[0010] Preferably, all four handles are covered with rubber sleeves, and the four handles are arranged in pairs on the outer sides of the frame. The rubber sleeves can improve friction and prevent slipping, making it easier for the user to lift the entire device.
[0011] Preferably, the heat exchange tube is laid in an S-shape inside the heat absorption plate, and the heat sink has uniformly opened heat dissipation holes on its outside. The S-shape can increase the contact surface with the inside of the heat absorption plate, and the heat dissipation holes can increase the contact surface between the heat sink and the air, thereby improving the heat dissipation efficiency.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] During operation, the heat-absorbing plate can quickly absorb heat from the heat source inside the device through heat transfer. At the same time, cold water enters the heat exchange tube from the inlet through the cooling water pipe. The cold water inside the heat exchange tube physically cools the heat-absorbing plate. After the cold water enters the heat exchange tube and heats up, it is discharged from the outlet to achieve a heat dissipation effect on the entire device. This avoids the inability of heat dissipation to affect the stability of use. At the same time, the heat sink can make the heat absorbed by the heat-absorbing plate come into contact with the outside air. Heat dissipation is achieved by contacting the air at room temperature, which can further assist in efficient heat dissipation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the external structure of a stern engine water pump according to the present invention.
[0015] Figure 2 This is a front view schematic diagram of a stern engine water pump according to the present invention;
[0016] Figure 3 This is a schematic diagram of the internal structure of the heat absorption plate of a stern engine water pump according to the present invention.
[0017] Figure 4 This is a side view of the heat absorption plate structure of a stern engine water pump according to the present invention.
[0018] In the diagram: 1. Frame; 2. Pressure gauge; 3. Flameout device; 4. Start handle; 5. Speed control handle; 6. Water inlet; 7. Water outlet; 8. Cooling water pipe; 9. Silencer; 10. Handle; 11. Heat absorption plate; 12. Heat exchange tube; 13. Heat sink; 14. Heat dissipation hole. Detailed Implementation
[0019] 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.
[0020] Please see Figures 1 to 4This utility model provides a technical solution: a stern engine water pump, comprising: a frame 1, with a pressure gauge 2 embedded inside the frame 1; a cooling assembly, including a heat-absorbing plate 11, which is fixedly installed inside the frame 1, with an annular heat exchange tube 12 embedded inside the heat-absorbing plate 11, a cooling water pipe 8 fixedly connected to one end of the heat exchange tube 12, an inlet 6 fixedly connected to the outside of the cooling water pipe 8, and an outlet 7 fixedly connected to the other end of the heat exchange tube 12; and heat dissipation fins 13 uniformly fixedly connected to the outside of the heat-absorbing plate 11. In use, the device is first installed in a suitable position. During operation, the heat absorption plate 11 can quickly absorb heat from the heat source inside the device through heat transfer. At the same time, cold water enters the heat exchange tube 12 from the inlet 6 through the cooling water pipe 8. The cold water inside the heat exchange tube 12 will physically cool the heat absorption plate 11. After the cold water enters the heat exchange tube 12 and heats up, it is discharged from the outlet 7 to achieve the heat dissipation effect of the entire device and avoid the instability of operation due to untimely heat dissipation. At the same time, the heat sink 13 can make the heat absorbed by the heat absorption plate 11 come into contact with the outside air and dissipate heat by contacting the ambient air, which can further assist in efficient heat dissipation.
[0021] The heat absorber plate 11 is attached to the outside of the heat source engine, and the muffler 9 is fixedly connected inside the frame 1. The heat absorber plate 11 can quickly absorb and cool the heat dissipated by the heat source, and the muffler 9 can achieve the effect of quickly cooling the entire device.
[0022] A shutdown device 3 is installed on the top of the pressure gauge 2. The shutdown device 3 is vertically installed on the top of the pressure gauge 2. The shutdown device 3 can control the engine to shut down. When not in use, the entire device can be shut down. A speed control handle 5 and a start handle 4 are installed on the top of the frame 1. The start handle 4 can start the entire device. The speed control handle 5 can be used to adjust the power of the engine.
[0023] The frame 1 has four handles 10 on its external rotating connection. The frame 1 is made of stainless steel. The handles 10 make it easy for two people to lift the whole device, improving the flexibility of the whole device. The four handles 10 are all covered with rubber sleeves. The four handles 10 are arranged in pairs on the outside of the frame 1. The rubber sleeves can improve friction and prevent slipping, making it easy for users to lift the whole device.
[0024] The heat exchange tube 12 is laid in an S-shape inside the heat absorption plate 11. The heat sink 13 has heat dissipation holes 14 evenly distributed on its exterior. The S-shaped arrangement can increase the contact surface with the heat absorption plate 11, and the heat dissipation holes 14 can increase the contact surface between the heat sink 13 and the air, thereby improving the heat dissipation efficiency.
[0025] When the stern engine water pump is in use, the heat absorption plate 11 can quickly absorb heat from the heat source inside the device through heat transfer. At the same time, cold water enters the heat exchange tube 12 from the inlet 6 through the cooling water pipe 8. The cold water inside the heat exchange tube 12 will physically cool the heat absorption plate 11. After the cold water enters the heat exchange tube 12 and heats up, it is discharged from the outlet 7.
[0026] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.
[0027] Finally, several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may change. Second, the accompanying drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. Where there is no conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. 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 stern engine water pump, characterized in that include: Frame (1), with a pressure gauge (2) embedded inside the frame (1); The cooling assembly includes a heat absorption plate (11), which is fixedly installed inside the frame (1). An annular heat exchange tube (12) is embedded inside the heat absorption plate (11). A cooling water pipe (8) is fixedly connected to one end of the heat exchange tube (12), and an inlet (6) is fixedly connected to the outside of the cooling water pipe (8). An outlet (7) is fixedly connected to the other end of the heat exchange tube (12). Heat sinks (13) are uniformly fixedly connected to the outside of the heat absorption plate (11).
2. The stern engine water pump of claim 1, wherein: The heat absorber plate (11) is attached to the outside of the heat source engine, and a muffler (9) is fixedly connected inside the frame (1).
3. The stern engine water pump of claim 1, wherein: The pressure gauge (2) is provided with a flameout device (3) at the top, and the flameout device (3) is vertically arranged at the top of the pressure gauge (2).
4. The stern engine water pump of claim 1, wherein: The top of the frame (1) is provided with a speed control handle (5) and a start handle (4).
5. The stern engine water pump according to claim 1, characterized in that: The frame (1) is externally rotatably connected to four handles (10), and the frame (1) is made of stainless steel.
6. The stern engine water pump according to claim 5, characterized in that: The four handles (10) are all covered with rubber sleeves, and the four handles (10) are arranged in pairs on the outside of the frame (1) on both sides.
7. The stern engine water pump according to claim 1, characterized in that: The heat exchange tube (12) is laid in an S-shape inside the heat absorption plate (11), and the heat sink (13) has heat dissipation holes (14) evenly distributed on its exterior.