Engine water pump, engine device, and vehicle

Abstract

The utility model relates to the technical field of engine, disclose an engine water pump, engine device and vehicle, this engine water pump includes water pump casing, water pump main shaft, water pump bearing and adjusting device, and the both ends of the water pump casing's water release cavity are equipped with first channel and second channel respectively, and adjusting device installs in first channel and can make first channel switch between the intercommunication state and disconnected state. When this engine water pump works in the working environment of higher sand content, can start adjusting device to switch first channel to disconnected state, like this, there is no continuous convection air carrying sand and dust through first channel and second channel, thereby prevent sand and dust from entering water release cavity continuously and cause the phenomenon of water release cavity blockage, will not affect liquid water by second channel and export to the outside of water pump casing, therefore will not cause a large amount of liquid water to enter the inside of water pump bearing, thereby avoid the phenomenon of water pump bearing to cause the abrasion of lubrication anomaly.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to an engine water pump, engine device and vehicle. Background Technology

[0002] During normal operation, the engine water pump achieves dynamic sealing by pressing and rotating the dynamic and static sealing rings together. The mating surfaces of the dynamic and static rings require water film lubrication. A small amount of water inside the water pump flows through the sealing surfaces of the dynamic and static rings and then leaks into the drain chamber. The drain chamber usually has a drain hole at the bottom to drain liquid water to the outside of the water pump. To improve the drainage effect, a vent hole is also provided at the top of the drain chamber to discharge gaseous or misty water from the drain chamber.

[0003] However, for engines operating in special environments such as mining areas, due to the high dust content in the air, the water pump is located at the rear of the intake fan. During the high-speed rotation of the fan, strong convection is formed at the front of the water pump. The convective air passes through the drain chamber, causing a large amount of dust to be deposited in the drain chamber. Eventually, this leads to blockage of the drain hole in the drain chamber. The water leaking from the drain chamber cannot be discharged to the engine water pump in time, but instead enters the water pump bearing, which can easily cause the water pump bearing to wear due to abnormal lubrication.

[0004] Therefore, how to avoid water pump bearing lubrication failure when the engine is working in an environment with high dust content, so as to improve the working efficiency of the engine water pump, has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to at least solve the technical problem of how to prevent water pump bearing lubrication failure when the engine is operating in an environment with high dust content, thereby improving the working efficiency of the engine water pump. This objective is achieved through the following technical solution: In a first aspect, this utility model proposes an engine water pump, comprising: a water pump housing having an internally connected mounting cavity and a drain cavity; one end of the drain cavity being connected to the outside of the water pump housing via a first channel along a first direction, and the other end of the drain cavity being connected to the outside of the water pump housing via a second channel; a water pump main shaft extending through the mounting cavity and the drain cavity along a second direction perpendicular to the first direction; a water pump bearing mounted in the mounting cavity and sleeved on the outer wall of the water pump main shaft; and an adjusting device mounted in the first channel, the adjusting device being configured to switch the first channel between a connected state and a disconnected state; wherein, the end of the first channel opposite to the drain cavity has a first opening, and the end of the second channel opposite to the drain cavity has a second opening; when the first channel is in a connected state, the first opening and the second opening are connected; when the first channel is in a disconnected state, the connection path between the first opening and the second opening is disconnected by the adjusting device.

[0006] When this type of engine water pump is working normally, the first channel remains connected, that is, the first opening is connected to the second opening. In this way, it can ensure that gaseous or misty water can flow into the first channel and finally flow out through the first opening to the outside of the water pump housing, and it can also ensure that liquid water can flow into the second channel and finally flow out through the second opening to the outside of the water pump housing. When working in environments with high dust content (such as mining areas), convective air may carry dust through the first and second channels (i.e., convective air flows into the pump housing from the first opening and eventually flows out of the pump housing from the second opening, or convective air flows into the pump housing from the second opening and eventually flows out of the pump housing from the first opening; the direction of the convective air flow depends on the actual working conditions). In this case, the regulating device can be activated to switch the first channel to the off state. In this way, the pressure difference between the first and second channels remains stable, that is, there will be no continuous convective air carrying dust through the first and second channels, thereby preventing dust from continuously entering the drain chamber and causing blockage of the drain chamber. It will not affect the discharge of liquid water from the second channel to the outside of the pump housing, thus preventing a large amount of liquid water from entering the pump bearing, thereby avoiding wear of the pump bearing due to abnormal lubrication.

[0007] In some embodiments of this utility model, the regulating device is a valve device, which is configured to switch between an open state and a closed state; when the valve device is in the open state, the first channel is in a connected state; when the valve device is in the closed state, the first channel is in a disconnected state.

[0008] In some embodiments of this utility model, the valve device includes a bidirectional shut-off valve. The bidirectional shut-off valve has a valve core cavity inside. Along the extension direction of the first channel, one end of the valve core cavity has a first through hole, and the other end of the valve core cavity has a second through hole that can communicate with the first through hole. The valve core cavity has a valve core body that can cooperate with both the first through hole and the second through hole. When the bidirectional shut-off valve is in the open state, there is a gap between the valve core body and the first through hole, and there is a gap between the valve core body and the second through hole, and the first through hole communicates with the second through hole. When the bidirectional shut-off valve is in the closed state, the valve core body blocks the first through hole, or the valve core body blocks the second through hole.

[0009] In some embodiments of this utility model, the bidirectional shut-off valve includes a first shut-off valve seat and a second shut-off valve seat. The inner hole of the first shut-off valve seat is interference-fitted with the outer circle of the second shut-off valve seat. The valve core cavity is located between the first shut-off valve seat and the second shut-off valve seat. The first through hole is located at the end of the first shut-off valve seat away from the second shut-off valve seat, and the second through hole is located at the end of the second shut-off valve seat away from the first shut-off valve seat. The valve core body is a ball valve core, which is configured to reciprocate between the first through hole and the second through hole to realize the switching of the bidirectional shut-off valve between the open state and the closed state.

[0010] In some embodiments of this utility model, both the first stop valve seat and the second stop valve seat are metal valve seats, and / or the ball valve core is a thermoplastic resin valve core.

[0011] In some embodiments of this utility model, the engine water pump further includes a dust detector, which is used to detect the dust content in the first channel and the second channel. The valve device includes a solenoid valve that is signal-connected to the dust detector. When the dust detector does not detect dust in the first channel or the second channel, the solenoid valve remains open. When the dust detector detects dust in the first channel or the second channel, the dust detector transmits a dust signal to the solenoid valve, causing the solenoid valve to switch from the open state to the closed state.

[0012] In some embodiments of this utility model, the engine water pump further includes a pulley and an impeller. Along the first direction, the pulley and the impeller are fixedly connected to both ends of the water pump main shaft, and the water pump housing is located between the pulley and the impeller.

[0013] In some embodiments of this utility model, a water seal is provided between the drain chamber and the impeller.

[0014] Secondly, this utility model proposes an engine device, including an engine body and any of the aforementioned engine water pumps.

[0015] Thirdly, this utility model proposes a vehicle, including a vehicle body and the aforementioned engine device.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A cross-sectional view of the engine water pump provided in an embodiment of the present utility model, with the first channel in a connected state; Figure 2 for Figure 1 A schematic diagram of a convection airflow path in the middle; Figure 3 for Figure 1 A schematic diagram of another airflow path in the middle of the convection. Figure 4 A cross-sectional view of the engine water pump provided in an embodiment of the present utility model, with the first channel in a disconnected state; Figure 5 for Figure 4 A schematic diagram of the airflow path in the middle of the convection. Figure 6 A cross-sectional view of the engine water pump provided in an embodiment of the present utility model, with the first channel in another disconnected state; Figure 7 for Figure 6 A schematic diagram of the airflow path in the middle.

[0018] The attached figures are labeled as follows: 10. Engine water pump; 100. Pump housing; 101. Drain chamber; 110. First channel; 120. Second channel; 200. Water pump spindle; 300. Water pump bearings; 400, Adjustment device; 401, Valve core cavity; 410, First shut-off valve seat; 411, First through hole; 420, Second shut-off valve seat; 421, Second through hole; 430, Valve core body; 500. Pulley; 600. Impeller; 700, water seal. Detailed Implementation

[0019] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0020] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0021] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0022] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0023] Figure 1 A cross-sectional view of the engine water pump provided in an embodiment of the present utility model, with the first channel in a connected state; Figure 2 for Figure 1 A schematic diagram of a convection airflow path in the middle; Figure 3 for Figure 1 A schematic diagram of another airflow path in the middle of the convection. Figure 4 A cross-sectional view of the engine water pump provided in an embodiment of the present utility model, with the first channel in a disconnected state; Figure 5 for Figure 4 A schematic diagram of the airflow path in the middle of the convection. Figure 6 A cross-sectional view of the engine water pump provided in an embodiment of the present utility model, with the first channel in another disconnected state; Figure 7 for Figure 6 A schematic diagram of the airflow path in the above figure; it is easy to understand that the dashed arrows in the figure indicate the direction of airflow.

[0024] like Figures 1 to 7As shown, this utility model embodiment provides an engine water pump 10, including: a water pump housing 100, which has an internally connected mounting cavity and a drain cavity 101. Along a first direction, one end of the drain cavity 101 communicates with the outside of the water pump housing 100 through a first channel 110, and the other end of the drain cavity 101 communicates with the outside of the water pump housing 100 through a second channel 120; a water pump main shaft 200, which passes through the mounting cavity and the drain cavity 101 along a second direction, the second direction being perpendicular to the first direction; and a water pump bearing 300, which is mounted in the mounting cavity and sleeved on... The outer wall of the water pump main shaft 200; and the adjusting device 400, installed in the first channel 110, the adjusting device 400 being configured to switch the first channel 110 between a connected state and a disconnected state; wherein, the first channel 110 has a first opening at the end opposite to the drain chamber 101, and the second channel 120 has a second opening at the end opposite to the drain chamber 101; when the first channel 110 is in the connected state, the first opening and the second opening are connected; when the first channel 110 is in the disconnected state, the connection path between the first opening and the second opening is disconnected by the adjusting device 400.

[0025] In this embodiment, when the engine water pump 10 is working normally, the first channel 110 remains connected, that is, the first opening is connected to the second opening. In this way, it can be ensured that gaseous or misty water can flow into the first channel 110 and finally flow out through the first opening to the outside of the water pump housing 100, and it can also be ensured that liquid water can flow into the second channel 120 and finally flow out through the second opening to the outside of the water pump housing 100.

[0026] When this engine water pump 10 operates in a working environment with high dust content (such as a mining area), the convective air may carry dust through the first channel 110 and the second channel 120 (i.e., the convective air flows into the water pump housing 100 through the first opening and finally flows out of the water pump housing 100 through the second opening, such as...). Figure 2 As shown; or, convective air flows into the pump housing 100 through the second opening and finally flows out of the pump housing 100 through the first opening, as shown. Figure 3 As shown; the specific direction of convective airflow depends on the actual operating conditions. At this time, the regulating device 400 can be activated to switch the first channel 110 to the off state. In this way, the pressure difference between the first channel 110 and the second channel 120 remains stable, that is, there will be no continuous convective air carrying sand and dust passing through the first channel 110 and the second channel 120 (the convective airflow path can be referenced). Figure 5 and Figure 7 This prevents sand and dust from continuously entering the drain chamber 101 and causing blockage, and does not affect the discharge of liquid water from the second channel 120 to the outside of the pump housing 100.

[0027] Therefore, even in working environments with high dust content, this engine water pump 10 will not cause a large amount of liquid water to enter the water pump bearing 300, thereby avoiding the occurrence of wear of the water pump bearing 300 due to abnormal lubrication.

[0028] It is easy to understand that, with the vertical direction as a reference, the first channel 110 should be above the drain cavity 101, and the second channel 120 should be below the drain cavity 101. Figure 1 As shown; In addition, both the first and second openings should be located on the side wall of the pump housing 100 to facilitate drainage.

[0029] According to an optional embodiment of the present invention, the regulating device 400 is a valve device, which is configured to switch between an open state and a closed state; when the valve device is in the open state, the first channel 110 is in a connected state; when the valve device is in the closed state, the first channel 110 is in a disconnected state.

[0030] In this embodiment, it is easy to understand that, in order to achieve the switching of the first channel 110 between the connected state and the disconnected state, an effective way is to set a valve device in the first channel 110, and achieve the switching of the first channel 110 between the connected state and the disconnected state by switching the valve device between the open state and the closed state, which is simple and convenient to operate.

[0031] Continue to refer to Figures 1 to 7 According to an optional embodiment of the present invention, the valve device includes a bidirectional shut-off valve. The bidirectional shut-off valve has a valve core cavity 401 inside. Along the extension direction of the first channel 110, one end of the valve core cavity 401 has a first through hole 411, and the other end of the valve core cavity 401 has a second through hole 421 that can communicate with the first through hole 411. The valve core cavity 401 has a valve core body 430 that can cooperate with both the first through hole 411 and the second through hole 421. When the bidirectional shut-off valve is in the open state, there is a gap between the valve core body 430 and the first through hole 411, and there is a gap between the valve core body 430 and the second through hole 421, and the first through hole 411 communicates with the second through hole 421. When the bidirectional shut-off valve is in the closed state, the valve core body 430 blocks the first through hole 411, or the valve core body 430 blocks the second through hole 421.

[0032] In this embodiment, it is easy to understand that when the engine water pump 10 is working normally (i.e., not in a working environment with high dust content), the two-way shut-off valve is in the open state so that the first channel 110 remains connected.

[0033] When the engine water pump 10 operates in a working environment with high dust content, the two-way shut-off valve is switched to the closed state, that is, the valve core body 430 blocks the first through hole 411 or the second through hole 421, thereby switching the first channel 110 to the open state. In this way, the pressure difference between the first channel 110 and the second channel 120 remains stable, that is, there will be no continuous convective air carrying dust through the first channel 110 and the second channel 120, thereby preventing dust from continuously entering the drain chamber 101 and causing the drain chamber 101 to become blocked, and it will not affect the discharge of liquid water from the second channel 120 to the outside of the water pump housing 100.

[0034] Specifically, according to an optional embodiment of the present invention, the bidirectional shut-off valve includes a first shut-off valve seat 410 and a second shut-off valve seat 420. The inner hole of the first shut-off valve seat 410 is interference-fitted with the outer circle of the second shut-off valve seat 420. The valve core cavity 401 is located between the first shut-off valve seat 410 and the second shut-off valve seat 420. The first through hole 411 is located at one end of the first shut-off valve seat 410 away from the second shut-off valve seat 420, and the second through hole 421 is located at one end of the second shut-off valve seat 420 away from the first shut-off valve seat 410. The valve core body 430 is a ball valve core, which is configured to reciprocate between the first through hole 411 and the second through hole 421 to realize the switching of the bidirectional shut-off valve between the open state and the closed state.

[0035] In this embodiment, the working process of the engine water pump 10 will be described in detail below using a specific working scenario as an example: First, refer to Figures 1 to 3 When the engine water pump 10 is operating normally (i.e., not in a working environment with high dust content), the first channel 110 remains connected, that is, there is a gap between the ball valve core and the first through hole 411 and the second through hole 421, so as to ensure that the first opening can communicate with the second opening. In this way, it can ensure that gaseous or misty water can flow into the first channel 110 and finally flow out through the first opening to the outside of the water pump housing 100, and it can ensure that liquid water can flow into the second channel 120 and finally flow out through the second opening to the outside of the water pump housing 100.

[0036] Please refer to the above. Figure 4 and Figure 5When this engine water pump 10 operates in a working environment with high sand and dust content (such as a mining area), taking the direction of convective air flow as an example: after the convective air carrying sand and dust flows into the first channel 110 through the first opening, it will continue to flow into the valve core cavity 401 through the first through hole 411 of the two-way shut-off valve. Under the drive of the airflow pressure, it will push the ball valve core to the second through hole 421, so that the ball valve core can block the second through hole 421. At this time, the two-way shut-off valve is in the closed state, realizing the switching of the first channel 110 from the connected state to the disconnected state. That is to say, it can prevent sand and dust from flowing from the first channel 110 to the second channel 120, thereby preventing the phenomenon of sand and dust continuously entering the drain chamber 101 and causing the drain chamber 101 to be blocked. It will not affect the discharge of liquid water from the second channel 120 to the outside of the water pump housing 100.

[0037] Please refer to the above. Figure 6 and Figure 7 Taking the flow direction of convective air as an example: when convective air carrying sand and dust flows into the second channel 120 through the second opening, it will continue to flow into the valve core cavity 401 through the second through hole 421 of the two-way shut-off valve. Under the action of airflow pressure, it will push the ball valve core to the first through hole 411, so that the ball valve core blocks the first through hole 411. At this time, the two-way shut-off valve is in the closed state, realizing the switching of the first channel 110 from the connected state to the disconnected state. Since the first channel 110 is in the closed state... In the disconnected state, it means that the convective air flowing from the second channel 120 to the first channel 110 will not eventually flow out through the first opening of the first channel 110. Even if the convective air carrying sand and dust continues to exist, since the pressure difference between the first channel 110 and the second channel 120 remains stable, there will be no continuous convective air carrying sand and dust flowing into the second channel 120 through the second opening. This prevents the phenomenon of sand and dust continuously entering the drain chamber 101 and causing the drain chamber 101 to become blocked. It will not affect the discharge of liquid water from the second channel 120 to the outside of the water pump housing 100.

[0038] It is easy to understand that the bidirectional shut-off valve seat can be located at the end of the first channel 110 away from the drain chamber 101, such as... Figure 1 , Figure 4 and Figure 6 As shown.

[0039] According to an optional embodiment of the present invention, both the first shut-off valve seat 410 and the second shut-off valve seat 420 are metal valve seats, and / or the ball valve core is a thermoplastic resin valve core.

[0040] In this embodiment, the metal valve seat has advantages such as high strength, good wear resistance and corrosion resistance; the thermoplastic resin valve core has good heat resistance and mechanical properties; the selection of both materials can ensure the service life of the bidirectional shut-off valve.

[0041] It should be noted that the specific materials of the first shut-off valve seat 410, the second shut-off valve seat 420, and the ball valve core mentioned above are for illustrative purposes only, and the actual materials should be based on the specific working conditions.

[0042] According to an optional embodiment of the present invention, the engine water pump 10 further includes a dust detector, which is used to detect the dust content in the first channel 110 and the second channel 120. The valve device includes a solenoid valve that is signal-connected to the dust detector. When the dust detector does not detect dust in the first channel 110 or the second channel 120, the solenoid valve remains open. When the dust detector detects dust in the first channel 110 or the second channel 120, the dust detector transmits a dust signal to the solenoid valve, causing the solenoid valve to switch from the open state to the closed state.

[0043] In this embodiment, when the engine water pump 10 is operating normally (i.e., not in a working environment with high dust content), the dust detector cannot detect dust in the first channel 110 or the second channel 120. The solenoid valve remains open, that is, the first channel 110 remains connected, and the first opening and the second opening are connected. In this way, it can be ensured that gaseous or misty water can flow into the first channel 110 and finally flow out through the first opening to the outside of the water pump housing 100, and it can also be ensured that liquid water can flow into the second channel 120 and finally flow out through the second opening to the outside of the water pump housing 100.

[0044] When this engine water pump 10 operates in a working environment with high dust content (such as a mining area), the convective air may carry dust through the first channel 110 and the second channel 120 (i.e., convective air flows into the water pump housing 100 from the first opening and finally flows out of the water pump housing 100 from the second opening, or convective air flows into the water pump housing 100 from the second opening and finally flows out of the water pump housing 100 from the first opening; the specific direction of the convective air flow depends on the actual working conditions). The dust detector detects dust in the first channel 110 or the second channel 120. The system contains sand and dust, and transmits the sand and dust signal to the solenoid valve, causing the solenoid valve to switch from the open state to the closed state. At this time, the first channel 110 switches to the open state. In this way, the pressure difference between the first channel 110 and the second channel 120 remains stable, that is, there will be no continuous convective air carrying sand and dust passing through the first channel 110 and the second channel 120. This prevents the phenomenon of sand and dust continuously entering the drain chamber 101 and causing blockage of the drain chamber 101, and does not affect the discharge of liquid water from the second channel 120 to the outside of the water pump housing 100.

[0045] Therefore, even in working environments with high dust content, this engine water pump 10 will not cause a large amount of liquid water to enter the water pump bearing 300, thereby avoiding the occurrence of wear of the water pump bearing 300 due to abnormal lubrication.

[0046] refer to Figure 1 , Figure 4 and Figure 6 According to an optional embodiment of the present invention, the engine water pump 10 further includes a pulley 500 and an impeller 600. Along a first direction, the pulley 500 and the impeller 600 are respectively fixedly connected to both ends of the water pump main shaft 200, and the water pump housing 100 is located between the pulley 500 and the impeller 600. A water seal 700 is provided between the drain chamber 101 and the impeller 600.

[0047] In this embodiment, it is easy to understand that the pulley 500 is used to drive the water pump main shaft 200 to rotate, while the impeller 600 is used to rotate with the water pump main shaft 200 to realize the basic function of the engine water pump 10; the water seal 700 is set to ensure the sealing of the drain chamber 101.

[0048] Secondly, this utility model proposes an engine device, including an engine body and any of the aforementioned engine water pumps 10.

[0049] In this embodiment, even in a working environment with high dust content, this engine device will not cause a large amount of liquid water to enter the water pump bearing 300, thereby avoiding the phenomenon of wear caused by abnormal lubrication of the water pump bearing 300, and thus improving the overall working efficiency and service life of the engine device. For details of the above-mentioned beneficial effects, please refer to the analysis of any of the above-mentioned engine water pumps 10, which will not be repeated here.

[0050] Thirdly, this utility model proposes a vehicle, including a vehicle body and the aforementioned engine device.

[0051] In this embodiment, similarly, the beneficial effects of the vehicle are the same as those of the engine device described above, and will not be repeated here.

[0052] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An engine water pump, characterized in that, include: The water pump housing (100) has an internally connected mounting cavity and a drain cavity (101). Along the first direction, one end of the drain cavity (101) is connected to the outside of the water pump housing (100) through a first channel (110), and the other end of the drain cavity (101) is connected to the outside of the water pump housing (100) through a second channel (120). The water pump spindle (200) extends through the mounting cavity and the drain cavity (101) along a second direction, which is perpendicular to the first direction. A water pump bearing (300) is installed in the mounting cavity, and the water pump bearing (300) is sleeved on the outer wall of the water pump main shaft (200); and An adjustment device (400) is installed in the first channel (110), the adjustment device (400) being configured to switch the first channel (110) between a connected state and a disconnected state; The first channel (110) has a first opening at one end away from the drain chamber (101), and the second channel (120) has a second opening at one end away from the drain chamber (101). When the first channel (110) is in the connected state, the first opening is connected to the second opening. When the first channel (110) is in the disconnected state, the connection path between the first opening and the second opening is disconnected by the adjusting device (400).

2. The engine water pump of claim 1, wherein The regulating device (400) is a valve device configured to switch between an open state and a closed state; When the valve device is in the open state, the first channel (110) is in the connected state; when the valve device is in the closed state, the first channel (110) is in the disconnected state.

3. The engine pump of claim 2, wherein, The valve device includes a bidirectional shut-off valve, which has a valve core cavity (401) inside. Along the extension direction of the first channel (110), one end of the valve core cavity (401) has a first through hole (411), and the other end of the valve core cavity (401) has a second through hole (421) that can communicate with the first through hole (411). The valve core cavity (401) has a valve core body (430) that can cooperate with both the first through hole (411) and the second through hole (421). When the bidirectional shut-off valve is in the open state, there is a gap between the valve core body (430) and the first through hole (411), and there is a gap between the valve core body (430) and the second through hole (421), and the first through hole (411) and the second through hole (421) are connected. When the bidirectional shut-off valve is in the closed state, the valve core body (430) blocks the first through hole (411), or the valve core body (430) blocks the second through hole (421).

4. The engine pump of claim 3, wherein The bidirectional shut-off valve includes a first shut-off valve seat (410) and a second shut-off valve seat (420). The inner hole of the first shut-off valve seat (410) is interference-fitted with the outer circle of the second shut-off valve seat (420). The valve core cavity (401) is located between the first shut-off valve seat (410) and the second shut-off valve seat (420). The first through hole (411) is located at the end of the first shut-off valve seat (410) away from the second shut-off valve seat (420). The second through hole (421) is located at the end of the second shut-off valve seat (420) away from the first shut-off valve seat (410). The valve core body (430) is a ball valve core, which is configured to reciprocate between the first through hole (411) and the second through hole (421) to realize the switching of the bidirectional shut-off valve between the open state and the closed state.

5. The engine pump of claim 4, wherein, The first shut-off valve seat (410) and the second shut-off valve seat (420) are both metal valve seats, and / or the ball valve core is a thermoplastic resin valve core.

6. The engine pump of claim 2, wherein, The engine water pump also includes a dust detector, which is used to detect the dust content in the first channel (110) and the second channel (120). The valve device includes a solenoid valve that is signal-connected to the dust detector. When the dust detector does not detect dust in the first channel (110) or the second channel (120), the solenoid valve remains in the open state; when the dust detector detects dust in the first channel (110) or the second channel (120), the dust detector transmits a dust signal to the solenoid valve so that the solenoid valve switches from the open state to the closed state.

7. The engine pump of any one of claims 1-6, wherein, The engine water pump also includes a pulley (500) and an impeller (600). Along the first direction, the pulley (500) and the impeller (600) are fixedly connected to both ends of the water pump main shaft (200), and the water pump housing (100) is located between the pulley (500) and the impeller (600).

8. The engine water pump according to claim 7, characterized in that, A water seal (700) is provided between the drain chamber (101) and the impeller (600).

9. An engine apparatus characterized by, Includes the engine body and the engine water pump (10) as described in any one of claims 1-8.

10. A vehicle characterized by comprising: It includes the vehicle body and the engine unit as described in claim 9.

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