Water pump with slow flow channel
By designing a slow-flow channel and a small-diameter leakage hole in the water pump, the problem of distinguishing between false and true water leakage in internal combustion engine water pumps has been solved, thus improving safety and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SPRING COME IND CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-26
AI Technical Summary
In cases of apparent or actual water leakage in existing internal combustion engine water pumps, users cannot accurately determine the extent of water seal damage by observing the amount of water discharged from the waterway, leading to misjudgment and safety hazards.
Design a water pump with a slow-flow channel, including a pump casing, bearing shaft, impeller, pulley and water seal. The slow-flow channel is an open channel. The water flow rate is slowed down by a spiral slow-flow structure, and false leakage water is evaporated at high temperature. The real leakage is determined by using a small-diameter leakage hole.
It enables accurate identification of water pump leakage, avoids misjudgment and component damage, improves safety and ease of operation, and extends the lifespan of water pump components.
Smart Images
Figure CN224283014U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a water pump, and more particularly to a water pump with a slow-flow channel that is applied to internal combustion engines, can eliminate false leaks and can identify true leaks. Background Technology
[0002] In existing internal combustion engine cooling systems, water pumps may leak cooling water during operation. This leaked water is discharged through water channels in the pump casing. Such pseudo-leakage is permissible and does not affect the normal operation of the pump. However, when the water seal of the pump fails, water will also be discharged through the water channels, resulting in a true leak. Because both pseudo-leakage and true leaks involve water being discharged through the water channels, users cannot determine whether a true leak is caused by a damaged water seal by observing the amount of water discharged. This easily leads to misjudgment, resulting in a failure to repair or replace a truly damaged pump in a timely manner. Consequently, large amounts of leaked water may overflow and splash onto other parts, causing damage and ultimately creating safety issues. Utility Model Content
[0003] Therefore, one of the objectives of this invention is to provide a water pump with a slow-flow channel that can overcome at least one disadvantage of the prior art.
[0004] The purpose of this utility model and the background technical problem it solves are achieved by the following technical solution.
[0005] The present invention discloses a water pump with a slow-flow channel, comprising a pump casing, a bearing shaft, an impeller, a pulley, and a water seal. The pump casing has an overflow hole and a slow-flow channel communicating with the overflow hole. The slow-flow channel is configured to slow down the flow rate of water discharged from the overflow hole. The bearing shaft is rotatably disposed within the pump casing. The impeller is assembled at one end of the bearing shaft. The pulley is assembled at the other end of the bearing shaft opposite to the impeller. The water seal is assembled on the bearing shaft and is located between the overflow hole and the impeller.
[0006] The present invention relates to a water pump with a slow-flow channel, wherein the slow-flow channel is a non-sealed, open channel.
[0007] The present invention relates to a water pump with a slow-flow channel, wherein the slow-flow channel has a leakage hole connected to the overflow hole.
[0008] The present invention relates to a water pump with a slow-flow channel, wherein the pump casing includes a spiral slow-flow structure, the spiral slow-flow structure being used to guide the water to flow out through the leakage hole.
[0009] The present invention discloses a water pump with a slow-flow channel. The pump casing further includes a housing, the housing having an overflow hole and a chamber communicating with the bottom end of the overflow hole. The spiral slow-flow structure is disposed in the chamber and together with the chamber defines the leakage hole.
[0010] The present invention relates to a water pump with a slow-flow channel, wherein the spiral slow-flow structure is an internal thread formed in the housing and located in the cavity.
[0011] The present invention relates to a water pump with a slow-flow channel, wherein the spiral slow-flow structure is a spiral rod disposed within the cavity.
[0012] The present invention relates to a water pump with a slow-flow channel, wherein the leakage hole has a connecting hole portion connected to the bottom end of the overflow hole, and an inclined hole portion connected to the bottom end of the connecting hole portion.
[0013] The present invention relates to a water pump with a slow-flow channel, wherein the inclined hole extends obliquely toward the bearing shaft and has a closed end away from the bearing shaft, and an open end opposite to the closed end and adjacent to the bearing shaft.
[0014] The present invention discloses a water pump with a slow-flow channel. The pump casing further includes a cover disposed on the casing. The slow-flow channel also has a leakage hole defined by the cover. The leakage hole communicates between the leakage hole and the external environment of the water pump. The diameter of the leakage hole is smaller than the diameter of the leakage hole.
[0015] The present invention discloses a water pump with a slow-flow channel. The pump casing includes a housing and a cover disposed on the housing. The housing has an overflow hole and a leakage hole. The slow-flow channel also has a leakage hole defined by the cover. The leakage hole communicates between the open end of the inclined hole and the external environment of the water pump. The diameter of the leakage hole is smaller than the diameter of the inclined hole.
[0016] The present invention relates to a water pump with a slow-flow channel, wherein the slow-flow channel also has a leakage hole, the leakage hole being connected between the leakage hole and the external environment of the water pump, and the diameter of the leakage hole being smaller than the diameter of the leakage hole.
[0017] The beneficial effects of this invention are as follows: by constructing the slow-flow channel to reduce the flow rate of water discharged from the overflow hole, it ensures that the high temperature of the water pump can completely evaporate any false leakage water, thus enabling the water pump to effectively eliminate false leakage. Therefore, the user can accurately determine whether the water pump is leaking by observing whether water is flowing out of the overflow hole. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of a first embodiment of the water pump with a slow-flow channel of the present invention, illustrating the connection relationship between a pump casing, a bearing shaft, an impeller, a pulley, a bearing and a water seal;
[0019] Figure 2 This is an incomplete cross-sectional view of the first embodiment;
[0020] Figure 3 yes Figure 2 A magnified view of a portion;
[0021] Figure 4 This is an incomplete cross-sectional view of a second embodiment of the water pump with a slow-flow channel according to the present invention;
[0022] Figure 5 yes Figure 4 A magnified view of a portion;
[0023] Figure 6 This is an incomplete cross-sectional view of a third embodiment of the water pump with a slow-flow channel according to the present invention;
[0024] Figure 7 yes Figure 6 A magnified view of a portion;
[0025] Figure 8 This is a perspective schematic diagram of another embodiment of the pump casing described in the first, second, and third embodiments;
[0026] Figure 9 This is a perspective schematic diagram of another embodiment of the pump casing described in the first, second, and third embodiments;
[0027] Figure 10 This is a three-dimensional schematic diagram of another embodiment of the first embodiment, the second embodiment, and the third embodiment. Detailed Implementation
[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0029] Before this utility model is described in detail, it should be noted that similar elements are represented by the same reference numerals in the following description.
[0030] See Figure 1 This utility model discloses a first embodiment of a water pump 100 with a slow-flow channel, applied to an internal combustion engine (not shown). The water pump 100 includes a pump housing 1, a bearing shaft 2, an impeller 3, a pulley 4, a bearing 5, and a water seal 6.
[0031] The pump housing 1 is assembled into a cylinder block of the internal combustion engine (not shown). The pump housing 1 has an overflow hole 101 and a slow-flow channel 102 communicating with the overflow hole 101. The slow-flow channel 102 is configured to slow down the flow rate of water discharged from the overflow hole 101. The bearing shaft 2 is rotatably mounted through the pump housing 1. The impeller 3 is assembled to one end of the bearing shaft 2 and can be driven to rotate by the bearing shaft 2. The pulley 4 is assembled to the other end of the bearing shaft 2 opposite to the impeller 3. The pulley 4 is used to drive the bearing shaft 2 to rotate, so that the bearing shaft 2 drives the impeller 3 to rotate. The bearing 5 is disposed between the pump housing 1 and the bearing shaft 2. The water seal 6 is assembled to the bearing shaft 2 and is located between the overflow hole 101 and the impeller 3.
[0032] See Figure 1 , Figure 2 and Figure 3 The slow-flow channel 102 is an open, non-sealed channel. The slow-flow channel 102 has a leakage hole 103 and a water leakage hole 104. The leakage hole 103 is connected to the bottom end of the overflow hole 101 and is parallel to the bearing shaft 2. The water leakage hole 104 is connected between the leakage hole 103 and an external environment of the water pump 100. In this first embodiment, the pump housing 1 includes a housing 11, a spiral slow-flow structure 12, and a cover 13. The housing 11 forms the overflow hole 101 and a chamber 111 connected to the bottom end of the overflow hole 101. The spiral slow-flow structure 12 is disposed within the chamber 111 and together with the chamber 111 defines the leakage hole 103. The spiral slow-flow structure 12 is used to guide water out through the leakage hole 103. Specifically, the spiral slow-flow structure 12 is an internal thread formed in the housing 11 and located within the chamber 111. The housing 11 is formed, for example, by machining the spiral flow-slowing structure 12. The cover 13 is disposed on the housing 11 and defines the leakage hole 104. The diameter of the leakage hole 104 is smaller than the diameter of the leak hole 103. The cover 13 is fixedly connected to the housing 11, for example, by snap-fit or other fixing methods.
[0033] When a false leakage of cooling water occurs between the bearing shaft 2 and the water seal 6, the flow rate of leakage water into the overflow hole 101 through the leakage between the bearing shaft 2 and the water seal 6 is small. The leakage water flows into the leak hole 103 through the overflow hole 101 and then drips to the spiral flow-slowing structure 12. Due to the spiral shape of the spiral flow-slowing structure 12, the leakage water flows along the spiral flow-slowing structure 12 and its flow speed is slowed, causing the leakage water to flow slowly within the leak hole 103. Since the pump housing 1 is assembled into the cylinder block, the high temperature generated during the operation of the cylinder block is conducted to the pump housing 1, causing the temperature of the water pump 100 to rise to match the temperature of the cylinder block. Therefore, the leakage water flowing slowly within the leak hole 103 is evaporated by the high temperature of the water pump 100. The water vapor produced after the leaked water evaporates will be discharged into the external environment of the water pump 100 through the leak hole 104 to reduce the air pressure inside the water pump 100. In addition, the design of the leak hole 104 having a smaller diameter than the leak hole 103 allows the cover 13 to block the leaked water, thereby increasing the time that the leaked water remains in the leak hole 103.
[0034] By slowing the flow rate of the leaking water using the spiral flow-retarding structure 12 and blocking the leaking water using the cover 13, it is ensured that the high temperature of the water pump 100 can completely evaporate the leaking water in the leak hole 103, preventing the leaking water from accumulating in the leak hole 103 and flowing out through the leak hole 104. In this way, the water pump 100 can effectively eliminate false leaks.
[0035] When the water seal 6 of the water pump 100 is damaged and fails, cooling water leakage will occur between the bearing shaft 2 and the water seal 6. At this time, a large flow rate of leakage water flows into the overflow hole 101 through the leakage between the bearing shaft 2 and the water seal 6. Because the flow rate of leakage water into the leakage hole 103 through the overflow hole 101 is large, the leakage water flows along the spiral flow-slowing structure 12 within the leakage hole 103 and is discharged directly to the external environment of the water pump 100 through the leakage hole 104 before evaporation. Since the diameter of the leakage hole 104 is smaller than that of the leakage hole 103, it is ensured that the leakage water is discharged to the external environment of the water pump 100 at a uniform speed through the leakage hole 104. This prevents leakage water from splashing onto other parts and causing damage due to a large amount and rapid discharge through the leakage hole 104.
[0036] Since the water pump 100 can eliminate the possibility of false leaks, the user can accurately determine whether the water pump 100 is leaking by observing whether water flows out of the leak hole 104. In other words, the user can determine that the water pump 100 is leaking by simply observing water flowing out of the leak hole 104. This avoids situations where human error leads to failure to repair or replace a truly damaged water pump 100 in a timely manner, thus improving the safety of the water pump 100 in use. Because the entire leak inspection process of the water pump 100 is intuitive and easy to operate, it effectively improves the user's operational convenience and the accuracy of the judgment.
[0037] By designing the leak hole 104, defined by the cover 13, to have a smaller diameter than the leak hole 103, the user can easily observe the actual leakage situation through the leak hole 104. This also prevents external foreign objects from easily passing through and entering the leak hole 103 due to an excessively large diameter of the leak hole 104. Since the spiral flow-slowing structure 12 is located within the chamber 111 and together with the chamber 111 defines the leak hole 103, even if a small external foreign object enters the leak hole 103 through the leak hole 104, the spiral flow-slowing structure 12 will also block the foreign object, preventing it from entering the overflow hole 101 and then the water pump 100. This protects the components of the water pump 100, such as the bearing shaft 2, the bearing 5, and the water seal 6, thereby extending the service life of the water pump 100 and its components.
[0038] It should be noted that in another embodiment of this first embodiment, the diameter of the leakage hole 103 of the slow flow channel 102 can also be designed to be smaller. In this case, the pump casing 1 can omit the cover 13 and allow the leakage hole 103 to be directly connected to the external environment.
[0039] See Figure 4 and Figure 5 The second embodiment of the water pump 100 with a slow-flow channel of the present invention has a general structure that is similar to that of the first embodiment, except that the spiral slow-flow structure 12 is different.
[0040] In this second embodiment, the spiral flow-slowing structure 12 is a spiral rod disposed within the chamber 111 of the housing 11. The spiral flow-slowing structure 12 can be manufactured by machining before being installed into the chamber 111, or the spiral flow-slowing structure 12 and the housing 11 can be manufactured by die casting, for example, using a mold, so that the spiral flow-slowing structure 12 is integrally connected to the housing 11.
[0041] See Figure 6 and Figure 7 The third embodiment of the water pump 100 with a slow-flow channel of the present invention has a general structure that is similar to that of the first embodiment, except that the slow-flow channel 102 is different.
[0042] In this third embodiment, the leakage hole 103 of the slow-flow channel 102 is defined by the chamber 111. The leakage hole 103 has a connecting hole portion 105 communicating with the bottom end of the overflow hole 101, and an inclined hole portion 106 communicating with the bottom end of the connecting hole portion 105. The inclined hole portion 106 extends obliquely toward the bearing shaft 2 and has a closed end 107 away from the bearing shaft 2, and an open end 108 opposite to the closed end 107 and adjacent to the bearing shaft 2. The open end 108 communicates with the leakage hole 104. The diameter of the leakage hole 104 is smaller than the diameter of the inclined hole portion 106.
[0043] When a false leakage of cooling water occurs between the bearing shaft 2 and the water seal 6, the leaking water flowing into the leakage hole 103 through the overflow hole 101 will flow down through the connecting hole 105 to the inclined hole 106. The leaking water will first accumulate in the inclined hole 106 near the closed end 107. This slows down the flow rate of the leaking water in the inclined hole 106 towards the open end 108, allowing the leaking water to be evaporated by the high temperature of the water pump 100 during the accumulation process in the inclined hole 106.
[0044] It should be noted that the water pump 100 described in the first, second, and third embodiments of this utility model can each have different shape designs according to actual application requirements:
[0045] Figure 8 The pump casing 1 is shown in another shape that the water pump 100 may adopt.
[0046] Figure 9 The pump casing 1 is shown in another shape that the water pump 100 may adopt.
[0047] Figure 10 This shows another possible configuration of the water pump 100, wherein the leakage hole 103 is perpendicular to the bearing shaft 2 (e.g., Figure 1 (As shown).
[0048] In summary, the water pump 100 in each embodiment, through the slow-flow channel 102, is configured to slow down the flow rate of water discharged from the overflow hole 101. This ensures that the high temperature of the water pump 100 can completely evaporate any false leakage water, thus enabling the water pump 100 to effectively eliminate false leakage. Consequently, the user can accurately determine whether the water pump 100 is leaking by observing whether water is flowing out of the leakage hole 104, effectively achieving the purpose claimed by this invention.
Claims
1. A water pump with a slow-flow channel, characterized in that: The water pump includes a pump casing, a bearing shaft, an impeller, a pulley, and a water seal. The pump casing has an overflow hole and a slow-flow channel communicating with the overflow hole. The slow-flow channel is configured to slow down the flow rate of water discharged from the overflow hole. The bearing shaft is rotatably disposed through the pump casing. The impeller is assembled at one end of the bearing shaft. The pulley is assembled at the other end of the bearing shaft opposite to the impeller. The water seal is assembled on the bearing shaft and is located between the overflow hole and the impeller.
2. The water pump having a slow flow passage according to claim 1, characterized by: The slow-flow channel is an open, non-sealed channel.
3. The water pump having a slow flow passage according to claim 1, characterized by: The slow-flow channel has a leakage hole connected to the overflow hole.
4. The water pump having a slow flow passage according to claim 3, characterized by: The pump casing includes a spiral flow-slowing structure that guides the water out through the leakage hole.
5. The water pump having a slow flow passage according to claim 4, characterized by: The pump casing also includes a housing, which forms the overflow hole and a chamber communicating with the bottom end of the overflow hole. The spiral flow-slowing structure is disposed in the chamber and together with the chamber defines the leakage hole.
6. The water pump having a slow flow passage according to claim 5, characterized by: The spiral flow-slowing structure is an internal thread formed in the housing and located within the cavity.
7. The water pump having a slow flow passage according to claim 5, characterized by: The spiral flow control structure is a spiral rod disposed within the cavity.
8. The water pump having a slow flow passage according to claim 3, characterized by: The leakage hole has a connecting hole portion connected to the bottom end of the overflow hole, and an inclined hole portion connected to the bottom end of the connecting hole portion.
9. The water pump with a slow-flow channel according to claim 8, characterized in that: The inclined hole extends obliquely toward the bearing shaft and has a closed end away from the bearing shaft, and an open end opposite to the closed end and adjacent to the bearing shaft.
10. The water pump with a slow-flow channel according to claim 5, characterized in that: The pump housing also includes a cover disposed on the housing, and the slow-flow channel also has a leakage hole defined by the cover, the leakage hole communicating between the leakage hole and the external environment of the pump, and the diameter of the leakage hole is smaller than the diameter of the leakage hole.
11. The water pump with a slow-flow channel according to claim 9, characterized in that: The pump casing includes a housing and a cover disposed on the housing. The housing has the overflow hole and the leakage hole. The slow-flow channel also has a leakage hole defined by the cover. The leakage hole connects the open end of the inclined hole portion with the external environment of the pump. The diameter of the leakage hole is smaller than the diameter of the inclined hole portion.
12. The water pump with a slow-flow channel according to any one of claims 3 to 9, characterized in that: The slow-flow channel also has a leakage hole, which connects the leakage hole to the external environment of the water pump, and the diameter of the leakage hole is smaller than that of the leakage hole.