Engine oil discharge device

Abstract

The utility model discloses an engine oil discharge device, which relates to the technical field of internal combustion engines, is connected into an oil discharge plug screw of an oil pan, is used for discharging engine oil in the oil pan, and comprises a shell, the shell is provided with a circulation cavity connected with the oil pan. An on-off mechanism is connected in the circulation cavity; when the on-off mechanism is started, the circulation cavity communicates with the oil pan so that engine oil can flow out. When the on-off mechanism is closed, the circulation cavity is not communicated with the oil pan; according to the discharging device, automatic discharging of oil can be achieved, an oil discharging plug screw does not need to be manually screwed to discharge engine oil, and the engine oil cannot be stained on the body of a worker in the discharging process; and moreover, the engine oil is directly discharged through the circulation cavity directly communicated with the oil pan, and is not discharged through a long and narrow pipeline, so that the discharging speed is increased, the discharging is smoother, and the discharging efficiency is further improved.

Description

Technical Field

[0001] The present application belongs to the technical field of internal combustion engines, and specifically relates to an oil discharge device. Background Art

[0002] At present, in the national VI emission route of diesel engines, some engines choose the method of post-injection in the cylinder to reduce the generation of emissions, but part of the diesel injected in the cylinder will enter the oil pan along with the engine body, diluting the engine oil, which will shorten the oil drain cycle and increase the number of drains. Methanol engines are prone to condensed methanol in the engine body and on the top of the cylinder head, which can easily flow into the oil pan and cause the emulsification, oxidation and deterioration of the engine oil. In order to reduce the emulsification of the engine oil, two air inlets are specially set for the breathing system. Therefore, the current diesel engine drain cycle is shortened, and the engine oil needs to be replaced regularly.

[0003] The engine is equipped with a drain plug at the bottom of the oil pan. When the oil needs to be drained, the plug is unscrewed. During the draining process, it is necessary to drive to a special repair site and manually use a wrench to unscrew the plug. During the unscrewing process, the oil will flow along the wrench or from the edge of the plug, which can easily get on the operator. In addition, when the plug is removed, the oil will splash from the container to the surrounding objects and the operator, which increases the difficulty and uncertainty of the operation process, and at the same time has low safety and causes pollution to the surrounding environment.

[0004] The application number of the existing patent is CN202222365800.6, and the patent name is an oil pan filling and discharging device, which discloses a threaded joint that is sealed and connected to the oil pan drain plug, and the other end of the threaded joint is connected to an oil-resistant hose; the engine oil is released through the oil-resistant hose; however, the oil-resistant hose is long and not easy to store, and the slow flow rate leads to slow oil unloading, and the oil pipe is prone to stains after long-term use, resulting in poor oil unloading, and different types of threaded joints need to be replaced to adapt to engine models of different specifications. The oil-resistant hose needs to be connected during use and needs to be removed when not in use. Repeated operations increase the time for draining the oil and reduce the efficiency of oil unloading. Utility Model Content

[0005] The present application provides an oil discharge device to solve the above-mentioned technical problems that the oil drain plug needs to be unscrewed every time the oil is changed, causing the oil to flow onto the operator during the unscrewing process, and the discharge splashes and causes environmental pollution; the oil is discharged slowly during the diesel discharge process using an oil-resistant hose, which is prone to clogging, and the oil-resistant hose needs to be frequently assembled and disassembled, resulting in low oil discharge efficiency.

[0006] The technical solution adopted in this application is:

[0007] An oil discharge device is connected to the oil drain plug of the oil pan and is used to discharge the oil in the oil pan, comprising a housing; the housing has a flow cavity connected to the oil pan; an on-off mechanism is connected to the flow cavity;

[0008] When the on-off mechanism is turned on, the circulation chamber is connected to the oil pan to allow the oil to flow out; when the on-off mechanism is turned off, the circulation chamber is not connected to the oil pan.

[0009] The oil discharge device of the present application also has the following additional technical features:

[0010] The on-off mechanism comprises a linear ball head and a linear ball head rod connected to each other; the linear ball head is arranged in the circulation cavity, and a linear channel is arranged in the linear ball head;

[0011] When the on-off mechanism is turned on, the linear ball head rod drives the linear ball head to rotate 90 degrees, so that the linear channel connects the circulation chamber and the oil pan; when the on-off mechanism is closed, the linear ball head rod drives the linear ball head to reverse 90 degrees, so that the linear channel blocks the connection between the circulation chamber and the oil pan.

[0012] The connecting end of the linear ball head rod is connected to the linear ball head, and the extending end of the linear ball head rod extends out of the circulation cavity. The fixing part is arranged between the connecting end and the extending end, and is rotatably connected to the cavity body of the circulation cavity through the fixing part.

[0013] The on-off mechanism comprises a right-angle ball head and a right-angle ball head rod connected to each other; the right-angle ball head is arranged in the flow cavity, and a right-angle channel is arranged in the right-angle ball head;

[0014] When the on-off mechanism is turned on, the right-angle ball head rod drives the linear ball head to rotate 90 degrees, so that the right-angle channel connects the circulation chamber and the oil drain plug; when the on-off mechanism is closed, the right-angle ball head rod drives the right-angle ball head to reverse 90 degrees, so that the right-angle channel blocks the connection between the circulation chamber and the oil drain plug.

[0015] The flow chamber has a communication end for oil to enter and an outlet end for oil to flow out;

[0016] The connecting end and the outlet end are arranged in a straight line; or, the connecting end and the outlet end are arranged at a right angle.

[0017] The shell also has an accommodation cavity. When the connecting end and the outlet end are arranged in a straight line, the accommodation cavity is located on one side of the circulation cavity in the horizontal direction and is separated from the circulation cavity by a partition; when the connecting end and the outlet end are arranged at a right angle, the accommodation cavity is located on one side of the circulation cavity in the vertical direction and is separated from the circulation cavity by a partition.

[0018] The outlet end has a boss protruding from the outer wall of the flow cavity, so that the boss is connected to the oil outlet pipe.

[0019] A driving mechanism is connected in the placement cavity; a connecting groove for installing the on-off mechanism is provided on the partition; and a driving end of the driving mechanism is connected to the on-off mechanism.

[0020] The placement cavity is provided with an opening groove for installing the sensor connector, and the fixed end of the driving mechanism is electrically connected to the sensor connector.

[0021] The discharge device further comprises a controller, which is electrically connected to the sensor connector so that the controller drives the driving mechanism to rotate; the controller is also connected to a liquid level meter, which is arranged in the oil pan.

[0022] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0023] 1. An oil discharge device, connected to the drain plug of the oil pan, used for discharging the oil in the oil pan, comprising a shell; the shell has a flow cavity connected to the oil pan; an on-off mechanism is connected to the flow cavity; when the on-off mechanism is turned on, the flow cavity is connected to the oil pan to allow the oil to flow out; when the on-off mechanism is closed, the flow cavity is not connected to the oil pan.

[0024] The present application directly connects the discharge device to the oil drain plug, and the discharge device can directly contact the oil pan. An on-off mechanism is arranged inside the discharge device, which can realize the connection or blockage between the oil pan and the discharge device, so that when the on-off mechanism is started to be opened, the passage is opened, and the engine oil is discharged through this passage; when the on-off mechanism is closed, the passage is blocked, and oil can be filled into the oil pan. The discharge device of the present application can realize automatic discharge of oil, and there is no need to manually unscrew the oil drain plug to discharge the engine oil, and the oil will not be stained on the workers during the discharge process. Moreover, the engine oil is directly discharged through the flow cavity directly connected to the oil pan, without an intermediate link and without discharging through a narrow and long pipeline, so that resistance-free discharge is realized, the discharge speed is increased, the discharge is smoother, and the discharge efficiency is further improved.

[0025] 2. As an embodiment of the present application, the on-off mechanism comprises a linear ball head and a linear ball head rod connected to each other; the linear ball head is arranged in the circulation cavity, and a linear channel is arranged in the linear ball head; when the on-off mechanism is turned on, the linear ball head rod drives the linear ball head to rotate 90 degrees, so that the linear channel connects the circulation cavity with the oil pan; when the on-off mechanism is closed, the linear ball head rod drives the linear ball head to reverse 90 degrees, so that the linear channel blocks the connection between the circulation cavity and the oil pan. The circulation cavity is opened and closed by the linear ball head to realize the discharge and stop of the engine oil, and the whole process adopts automatic control. The on-off mechanism is driven by the driving mechanism to open and close, so as to realize the automatic discharge of the engine oil, and the discharge of the engine oil is realized without manually disassembling the drain bolt to realize the discharge of the engine oil, so as to avoid splashing on the staff, and also avoid the traditional oil-resistant hose that needs to touch the tortuous, and the discharge speed is slow; when the linear channel is connected with the circulation cavity, the engine oil can flow through the entire circulation cavity and be discharged outside the shell, which increases the flow rate and improves the discharge efficiency.

[0026] 3. As an embodiment of the present application, the connection end of the linear ball head rod is connected to the linear ball head, the extension end of the linear ball head rod extends out of the circulation cavity, and the fixing part is arranged between the connection end and the extension end, and is rotatably connected to the cavity body of the circulation cavity through the fixing part. It can be achieved that the linear ball head is completely located in the circulation cavity, while the linear ball head rod is partially located in the circulation cavity and the other part extends out of the circulation cavity for easy connection with the driving mechanism.

[0027] 4. As an embodiment of the present application, the housing further has a placement chamber. When the connecting end and the outlet end are arranged in a straight line, the placement chamber is located on one side of the circulation chamber in the horizontal direction and is separated from the circulation chamber by a partition. When the connecting end and the outlet end are arranged at a right angle, the placement chamber is located on one side of the circulation chamber in the vertical direction and is separated from the circulation chamber by a partition. Providing a placement chamber is conducive to accommodating the drive mechanism. The placement chamber accommodating the drive mechanism is separated from the circulation chamber to prevent engine oil from entering the placement chamber and damaging the drive mechanism, thereby further protecting the safety of the equipment.

[0028] 5. As an embodiment of the present application, the discharge device further includes a controller, the controller is electrically connected to the sensor connector, so that the controller drives the drive mechanism to rotate; the controller is also connected to a liquid level gauge, and the liquid level gauge is arranged in the oil pan. When the liquid level gauge detects that the engine oil has been completely discharged from the oil pan, it can send a signal to the controller so that the controller controls the drive mechanism to stop running, so that the drive mechanism drives the on-off mechanism to close, so that the flow chamber and the oil pan are blocked and the oil is no longer discharged. At this time, new engine oil can be injected into the oil pan. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 It is a structural schematic diagram of an oil discharge device in an oil discharge state according to an implementation mode of the utility model;

[0031] Figure 2 It is a structural schematic diagram of an oil discharge device in a non-oil discharge state according to an implementation mode of the utility model;

[0032] In the figure,

[0033] 1 oil pan, 2 drain plug, 3 housing, 4 circulation chamber, 5 placement chamber, 6 on-off mechanism, 61 right-angle ball head, 62 right-angle ball head rod, 7 mounting hole, 8 linear channel, 9 partition, 10 driving mechanism, 11 worm, 12 worm wheel, 13 driving gear, 14 driven gear, 15 motor, 16 sensor connector, 17 liquid level gauge, 18 outlet end, 19 connecting end. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0036] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0039] Oil pan: The closed crankcase serves as the outer shell of the oil storage tank to prevent the entry of impurities, collect and store the lubricating oil flowing back from the friction surfaces of the diesel engine, dissipate some of the heat and prevent the lubricating oil from oxidizing.

[0040] The present application relates to an oil discharge device, such as Figure 1-2 As shown, the oil drain plug 2 connected to the oil pan 1 is used to discharge the engine oil in the oil pan 1, and includes a shell 3; the shell 3 has a flow chamber 4 connected to the oil pan 1; a switching mechanism 6 is connected to the flow chamber 4; when the switching mechanism 6 is turned on, the flow chamber 4 is connected to the oil pan 1 to allow the engine oil to flow out; when the switching mechanism 6 is closed, the flow chamber 4 is not connected to the oil pan 1.

[0041] The oil pan 1 contains engine oil, and the bottom of the oil pan 1 is connected to an oil drain plug 2. The traditional way is to unscrew the oil drain plug 2 and then drain the oil. This operation will cause the oil to flow along the sleeves of the staff to the staff during the oil unloading process, and the oil will splash onto the staff because the staff has not had time to dodge at the moment the oil tilts out; in the existing patent, a hose is connected to flow out through the hose, but the hose is long and needs to be positioned manually, and a bucket is needed to hold the engine oil. The engine oil flowing in the hose needs to be replaced and cleaned regularly, otherwise the engine oil will cause the hose to be blocked and the engine oil cannot be drained smoothly, and due to the long length of the hose, the discharge speed is relatively slow, which is not conducive to efficient oil discharge; each time the oil is drained, the hose needs to be assembled and disassembled after completion, and repeated assembly and disassembly operations will also increase the oil draining time.

[0042] Therefore, based on the above background, the present application relates to a device capable of automatically draining oil, which is installed in the oil drain plug 2 and can be connected by welding or by threading. It is not limited to the present embodiment and aims to ensure that the engine oil drain device can be directly installed in the oil drain plug 2, so that the engine oil inside the oil pan 1 can directly enter the engine oil drain device in the oil drain plug 2 and be discharged to the outside by the engine oil drain device; therefore, an on-off mechanism 6 for draining and blocking the engine oil is provided in the engine oil drain device. When the on-off mechanism 6 is turned on, the output end of the engine oil drain device is connected to the input end of the engine oil drain device, so that the engine oil inside the oil pan 1 can directly enter the engine oil drain device in the oil drain plug 2 and be discharged to the outside by the engine oil drain device. The oil is directly discharged from the oil pan 1 through the oil discharge device to achieve rapid discharge of the oil. When the on-off mechanism 6 is closed, the output end and the input end of the oil discharge device are blocked, and the oil in the oil pan 1 will be blocked by the on-off mechanism 6 in the oil pan 1 and the inside of the oil pan 1 and the oil discharge device, and the passage to flow into the output end is blocked by the on-off mechanism 6. The present application connects the driving mechanism 10 with the controller to achieve that when it is necessary to discharge the oil, the controller controls the driving mechanism 10 to open and drive the on-off mechanism 6 to open, thereby achieving rapid discharge of the oil. Similarly, when it is not necessary to discharge the oil, the controller controls the driving mechanism 10 to drive the on-off mechanism 6 to close, thereby stopping the discharge of the oil.

[0043] The setting of the on-off mechanism 6 is not limited by the specific embodiment of the present invention, and any of the following embodiments may be adopted:

[0044] As a preferred embodiment, the on-off mechanism 6 comprises a linear ball head and a linear ball head rod connected to each other; the linear ball head is arranged in the flow cavity 4, and a linear channel 8 is arranged in the linear ball head;

[0045] When the on-off mechanism 6 is turned on, the linear ball head rod drives the linear ball head to rotate 90 degrees, so that the linear channel 8 connects the circulation chamber 4 with the oil pan 1; when the on-off mechanism 6 is closed, the linear ball head rod drives the linear ball head to reverse 90 degrees, so that the linear channel 8 blocks the connection between the circulation chamber 4 and the oil pan 1.

[0046] When using, Figure 1 As shown, since the linear ball head is connected to the circulation chamber 4, when oil needs to be discharged, the linear ball head is driven by the linear ball head rod to rotate 90 degrees, so that an oil discharge channel is formed between the linear channel 8 of the linear ball head and the circulation chamber 4 and the oil pan 1, and the oil flows from the oil pan 1 through the housing 3 and then through the linear channel 8 out of the output end of the housing 3 to the outside; similarly, when the on-off mechanism 6 needs to be closed, as shown in FIG. Figure 2 As shown, the linear ball head rod drives the linear ball head to reverse 90 degrees, so that the linear channel 8, the flow chamber 4 and the oil pan 1 are not in a straight line. At this time, the linear channel 8 is perpendicular to the axial direction of the oil drain plug 2 of the oil pan 1, and the linear ball head blocks the oil between the oil pan 1 and the oil discharge device.

[0047] Furthermore, the connecting end of the linear ball head rod is connected to the linear ball head, and the extending end of the linear ball head rod extends out of the circulation cavity 4. The fixing part is arranged between the connecting end and the extending end, and is rotatably connected to the cavity body of the circulation cavity 4 through the fixing part.

[0048] like Figure 1-2 As shown, it is an installation position of a linear ball head rod and a linear ball head under the present embodiment, a linear ball head is arranged in the circulation cavity 4, the connecting end of the linear ball head rod is fixedly connected with the linear ball head, the protruding end of the linear ball head rod passes through the circulation cavity 4 and protrudes out of the circulation cavity 4, the protruding end of the linear ball head rod protrudes into the placement cavity 5 described below, and there is a partition 9 for connecting between the circulation cavity 4 and the placement cavity 5 described below between the connecting end and the protruding end of the linear ball head rod, so, a mounting hole 7 is arranged on the partition 9, and a bearing is arranged in the mounting hole 7, the linear ball head rod is inserted into the bearing, the protruding end of the linear ball head rod is connected to the driving mechanism 10, and the linear ball head rod is driven to rotate by the driving mechanism 10 to drive the rotation of the linear ball head.

[0049] As another preferred embodiment, the on-off mechanism 6 comprises a right-angle ball head 61 and a right-angle ball head rod 62 connected to each other; the right-angle ball head 61 is arranged in the flow cavity 4, and a right-angle channel is arranged in the right-angle ball head 61;

[0050] When the on-off mechanism 6 is turned on, the right-angle ball head rod 62 drives the linear ball head to rotate 90 degrees, so that the right-angle channel connects the circulation chamber 4 and the oil drain plug 2; when the on-off mechanism 6 is closed, the right-angle ball head rod 62 drives the right-angle ball head 61 to reverse 90 degrees, so that the right-angle channel blocks the connection between the circulation chamber 4 and the oil drain plug 2.

[0051] When the engine oil needs to be discharged, the right-angle ball head 61 is driven to rotate 90 degrees by the right-angle ball head rod 62. At this time, the right-angle channel and the output end of the oil pan 1 and the housing 3 form a passage, and the engine oil can quickly reach the output end through the oil pan 1 and the right-angle passage and be discharged to the outside. When the engine oil needs to be stopped from being discharged, the right-angle ball head 61 is driven to reverse 90 degrees by the right-angle ball head rod 62. At this time, the right-angle ball head 61 blocks the passage between the oil pan 1 and the output end of the housing 3, and the engine oil stops being discharged.

[0052] It should be noted that the right-angle channel refers to a cubic cavity dug out in the right-angle ball head 61, which serves as the right-angle channel; the length and width of the cavity are adapted to the cavity of the circulation cavity 4, so that when the cavity is connected to the oil pan 1 and the oil discharge device, the oil can flow out of this channel smoothly.

[0053] With respect to the structure of the housing 3, any one of the following embodiments may be adopted, and the specific structure of the housing 3 is not limited by this embodiment:

[0054] As a preferred embodiment, the circulation cavity 4 has a connecting end 19 for the oil to enter and an outlet end 18 for the oil to flow out; the connecting end 19 and the outlet end 18 are distributed in a straight line.

[0055] like Figure 1 As shown, the housing 3 is a cross-shaped structure as a whole, and the connecting end 19 of the housing 3 is connected to the oil drain plug 2 of the engine oil. The connecting end 19 and the oil drain plug 2 can be connected by threads, or can be welded to the oil drain plug 2, the purpose is to ensure that the oil drain plug 2 and the connecting end 19 can be connected and the engine oil discharge device can be fixed to the bottom of the oil pan 1; the housing 3 with a cross-shaped structure is provided with a placement cavity 5 and a circulation cavity 4 as described below, the placement cavity 5 is used to set the driving mechanism 10, and the circulation cavity 4 is used to set the on-off mechanism 6, located Figure 1In the shell 3 structure shown, the linear ball head is placed in the circulation chamber 4 with a cross-shaped structure, the connecting end of the linear ball head rod is connected to the linear ball head, and the protruding end of the linear ball head rod protrudes out of the circulation chamber 4 and even into the placement chamber 5. At this time, the placement chamber 5 is located on one side of the circulation chamber 4 in the horizontal direction of the shell 3, and the linear ball head rod is connected to the driving mechanism 10 in the placement chamber 5. When the engine oil needs to be discharged, the linear ball head rod drives the linear ball head to rotate 90 degrees, so that the connecting end 19 of the circulation chamber 4 is connected with the outlet end 18. At this time, the engine oil discharge path is distributed in a straight line, and the engine oil can be directly discharged to the outside through the outlet end 18 under the action of gravity, thereby increasing the oil discharge speed.

[0056] As another preferred embodiment, the connecting end 19 and the outlet end 18 are arranged at right angles.

[0057] In this embodiment, the shell 3 is distributed in an L shape, the connecting end 19 of the shell 3 is distributed vertically, the outlet end 18 of the shell 3 is distributed horizontally, the connecting end 19 of the shell 3 is connected to the oil drain bolt, and the outlet end 18 of the shell 3 is perpendicular to the axial direction of the connecting end 19. At this time, a right-angle ball head 61 is connected to the L-shaped corner of the shell 3, and the connecting end of the right-angle ball head rod 62 is connected to the right-angle ball head 61. The other end of the right-angle ball head rod 62 extends to the outside of the flow chamber 4 and extends into the placement chamber 5. At this time, the placement chamber 5 is located at the outlet end 1 of the shell 3. 8, the protruding end of the right-angle ball head rod 62 is connected to the driving mechanism 10 located in the accommodation chamber 5; when the engine oil needs to be discharged, the right-angle ball head rod 62 is driven to rotate by the driving mechanism 10, driving the right-angle ball head 61 to rotate 90 degrees, thereby realizing the connection between the right-angle channel and the oil pan 1 and the outlet end 18 of the shell 3, and the engine oil flows from the oil pan 1 to the outside through the L-shaped circulation chamber 4. The setting of the L-shaped circulation chamber 4 effectively avoids excessive impact force of the engine oil and increases a certain buffering force, so that the flow rate of the engine oil is smoother when it flows out of the outlet end 18.

[0058] Furthermore, the shell 3 also has an accommodation chamber 5. When the connecting end 19 and the outlet end 18 are arranged in a straight line, the accommodation chamber 5 is located on one side of the circulation chamber 4 in the horizontal direction and is separated from the circulation chamber 4 by the partition 9; when the connecting end 19 and the outlet end 18 are arranged at a right angle, the accommodation chamber 5 is located on one side of the circulation chamber 4 in the vertical direction and is separated from the circulation chamber 4 by the partition 9.

[0059] When the shell 3 is in a cross-shaped structure, a placement cavity 5 is provided on one side of the shell 3 in the horizontal direction. The placement cavity 5 and the circulation cavity 4 are separated by a partition 9. The linear ball head rod or the right-angle ball head rod 62 of the on-off mechanism 6 in the circulation cavity 4 is extended out of the partition 9 and into the placement cavity 5. The partition 9 is provided with a mounting hole 7 for mounting the linear ball head rod or the right-angle ball head rod 62. A bearing and a sealing structure are provided in the mounting hole 7 to prevent the engine oil from flowing out from the gap between the bearing and the partition 9.

[0060] Preferably, the outlet end 18 has a boss protruding from the outer wall of the flow chamber 4, so that the boss is connected to the oil outlet pipe.

[0061] like Figure 2 As shown, the purpose of providing the outlet end 18 with a boss of a certain height is to enable the boss to be connected to an external oil outlet pipe. The oil outlet pipe can be threadedly connected or plug-connected to the boss. The setting of the boss improves the connection stability between the outlet end 18 and the external oil outlet pipe.

[0062] As a preferred embodiment, a driving mechanism 10 is connected to the accommodating cavity 5 ; a connecting groove for installing the on-off mechanism 6 is provided on the partition plate 9 ; and a driving end of the driving mechanism 10 is connected to the on-off mechanism 6 .

[0063] The placement cavity 5 is provided with an opening groove for installing the sensor connector 16 , and the fixed end of the driving mechanism 10 is electrically connected to the sensor connector 16 .

[0064] When in use, the sensor connector 16 electrically connects the drive mechanism 10 with the controller. When the oil needs to be discharged, the controller controls the drive mechanism 10 to start, and the drive mechanism 10 drives the linear ball head rod or the right-angle ball head rod 62 to rotate 90 degrees. When the oil needs to be stopped from being discharged, the controller releases a signal to the drive mechanism 10 to rotate in the opposite direction, thereby causing the linear ball head rod or the right-angle ball head rod 62 to reverse 90 degrees.

[0065] Preferably, if Figure 2As shown, the driving mechanism 10 can adopt a worm gear 12 and worm 11 mechanism, a driving gear 13 is connected to the output shaft of the motor 15, a driven gear 14 is arranged on the worm 11, and the driving gear 13 is matched with the driven gear 14; the protruding end of the linear ball head rod or the right-angle ball head rod 62 is connected to the worm gear 12, and the worm gear 12 is matched with the worm 11. When the motor 15 is started, the driving gear 13 rotates to drive the driven gear 14 to rotate, and the driven gear 14 rotates to drive the worm 11 to rotate. Since the worm 11 cooperates with the worm gear 12, the linear ball head rod or the right-angle ball head rod 62 connected to the worm gear 12 is driven to rotate, thereby driving the linear ball head or the right-angle ball head 61 to rotate. When it is necessary to discharge the engine oil, the linear ball head rod or the right-angle ball head rod 62 is driven to rotate 90 degrees through the output shaft of the motor 15. When it is necessary to stop discharging the engine oil, the linear ball head rod or the right-angle ball head rod 62 is driven to rotate 90 degrees in the opposite direction through the reverse rotation of the output shaft of the motor 15.

[0066] As a preferred embodiment, the discharge device also includes a controller, which is electrically connected to the sensor connector 16 so that the controller drives the drive mechanism 10 to rotate; the controller is also connected to a liquid level meter 17, and the liquid level meter 17 is arranged in the oil pan 1.

[0067] The liquid level meter 17 is provided to determine when the oil inside the oil pan 1 is emptied and send a signal to the controller, and the controller controls the driving mechanism 10 to drive the linear ball head rod or the right-angle ball head rod 62 to reverse 90 degrees, so that the oil stops being discharged.

[0068] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0069] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0070] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An oil drain device, connected to an oil drain plug (2) of an oil pan (1), for draining the oil in the oil pan (1), characterized in that: It comprises a housing (3); the housing (3) has a circulation chamber (4) connected to the oil pan (1); an on-off mechanism (6) is connected in the circulation chamber (4); When the on-off mechanism (6) is turned on, the circulation chamber (4) is connected to the oil pan (1) to allow the engine oil to flow out; when the on-off mechanism (6) is turned off, the circulation chamber (4) is not connected to the oil pan (1).

2. An oil discharge device as claimed in claim 1, characterized in that: The on-off mechanism (6) comprises a linear ball head and a linear ball head rod connected to each other; the linear ball head is arranged in the circulation cavity (4), and a linear channel (8) is arranged in the linear ball head; When the on-off mechanism (6) is turned on, the linear ball head rod drives the linear ball head to rotate 90 degrees, so that the linear channel (8) connects the circulation chamber (4) and the oil pan (1); when the on-off mechanism (6) is turned off, the linear ball head rod drives the linear ball head to reverse 90 degrees, so that the linear channel (8) blocks the connection between the circulation chamber (4) and the oil pan (1).

3. An oil discharge device as claimed in claim 2, characterized in that: The connecting end of the linear ball head rod is connected to the linear ball head, and the extending end of the linear ball head rod extends out of the circulation cavity (4). A fixing part is provided between the connecting end and the extending end, and is rotatably connected to the cavity body of the circulation cavity (4) through the fixing part.

4. The oil discharge device according to claim 1, characterized in that: The on-off mechanism (6) comprises a right-angle ball head (61) and a right-angle ball head rod (62) connected to each other; the right-angle ball head (61) is arranged in the flow cavity (4), and a right-angle channel is arranged in the right-angle ball head (61); When the on-off mechanism (6) is turned on, the right-angle ball head rod (62) drives the right-angle ball head to rotate 90 degrees, so that the right-angle channel connects the circulation chamber (4) and the oil drain plug (2); when the on-off mechanism (6) is turned off, the right-angle ball head rod (62) drives the right-angle ball head (61) to reverse 90 degrees, so that the right-angle channel blocks the connection between the circulation chamber (4) and the oil drain plug (2).

5. The oil discharge device according to claim 1, characterized in that: The circulation chamber (4) has a connecting end (19) for the oil to enter and an outlet end (18) for the oil to flow out; The connecting end (19) and the outlet end (18) are arranged in a straight line; or, the connecting end (19) and the outlet end (18) are arranged at a right angle.

6. An oil discharge device as claimed in claim 5, characterized in that: The shell (3) further comprises a placement chamber (5). When the connecting end (19) and the outlet end (18) are arranged in a straight line, the placement chamber (5) is located on one side of the circulation chamber (4) in a horizontal direction and is separated from the circulation chamber (4) by a partition (9); when the connecting end (19) and the outlet end (18) are arranged at a right angle, the placement chamber (5) is located on one side of the circulation chamber (4) in a vertical direction and is separated from the circulation chamber (4) by a partition (9).

7. The oil discharge device according to claim 5, characterized in that: The outlet end (18) has a boss protruding from the outer wall of the flow chamber (4), so that the boss is connected to the oil outlet pipe.

8. The oil discharge device according to claim 6, characterized in that: A driving mechanism (10) is connected to the placement cavity (5); a connecting groove for installing the on-off mechanism (6) is provided on the partition plate (9); and a driving end of the driving mechanism (10) is connected to the on-off mechanism (6).

9. An oil discharge device as claimed in claim 8, characterized in that: The placement cavity (5) is provided with an opening groove for installing a sensor connector (16), and the fixed end of the drive mechanism (10) is electrically connected to the sensor connector (16).

10. An oil discharge device as claimed in claim 9, characterized in that: The discharge device further comprises a controller, the controller being electrically connected to the sensor connector (16) so that the controller drives the drive mechanism (10) to rotate; the controller is also connected to a liquid level meter (17), and the liquid level meter (17) is arranged in the oil pan (1).

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