Intelligent lubricating system

Abstract

The utility model relates to the technical field of lubricant distribution, in particular to an intelligent lubricating system. The intelligent lubricating system comprises an oil supply main pipeline and a plurality of oil supply branch pipelines connected to the downstream of the oil supply main pipeline, the intelligent lubricating system further comprises an oil injection valve, the oil injection valve is provided with an oil inlet and a plurality of oil outlets, the tail end of the oil supply main pipeline is connected with the oil inlet of the oil injection valve, and the oil supply branch pipelines are connected to the oil outlets respectively. The intelligent lubricating system further comprises a controller, the oil injection valve is electrically connected with the controller, and the controller controls the switching action of the oil injection valve to achieve connection and disconnection of the different oil supply branch pipelines. The controller is used for controlling the switching action of the oil injection valve, so that connection and disconnection of different oil supply branch pipelines are achieved, and single-point single control over different oil supply points is achieved. Free switching of the oil supply branch pipelines can be achieved without arranging valves for all the oil supply branch pipelines, the number of the valves is greatly reduced, the intelligent lubricating system is simplified, and connection is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of lubricant distribution technology, and in particular to an intelligent lubrication system. Background Technology

[0002] Currently, most lubrication systems employ single-line, dual-line, or multi-line lubrication control methods, using a purely mechanical structure design similar to hydraulic reversing. This makes it impossible to achieve single-point control, timed and quantitative lubrication, and point-to-point monitoring. In actual use, pipe blockages, leaks, and jamming of the oil injection valve body frequently occur. Furthermore, when a fault occurs, it is difficult to locate the fault in a timely manner, leading to complete system shutdown due to a single fault. These factors render conventional lubrication systems unsuitable for the oil injection lubrication of large, core equipment.

[0003] Chinese utility model patent CN215807794U discloses an intelligent lubrication system for industrial equipment. This system includes an oil tank connected to a main oil supply line. Downstream of the main oil supply line are multiple branch oil supply lines (equivalent to branch oil supply lines), each leading to a different lubrication point. Each branch oil supply line is connected to an electromagnetic oil feeder (i.e., a valve). The electromagnetic oil feeder is electrically connected to a controller, which controls the on / off state of the branch oil supply lines by controlling the switching of the electromagnetic oil feeders. This achieves single-point, single-control oil supply to different lubrication points. Each branch oil supply line is also equipped with a flow sensor, which is electrically connected to the controller. The flow sensor feeds back the lubricating oil quantity to the controller, which then controls the closing time of the electromagnetic oil feeder on the corresponding branch oil supply line based on the lubricating oil quantity feedback, thereby controlling the oil supply to the lubrication point.

[0004] This lubrication system can achieve single-point control of oil supply to different lubrication points and individual control of the oil supply volume to different lubrication points. However, valves are connected to each oil delivery branch line, and each valve is electrically connected to the controller, resulting in a complex overall structure, a large number of components, and inconvenient connections. Especially when applied to large industrial equipment, where there are many lubrication points, each lubrication point requires a separate valve, leading to a large number of valves, further complicating the lubrication system structure and making connections even more inconvenient. Utility Model Content

[0005] The purpose of this invention is to provide an intelligent lubrication system to solve the problems of numerous valves and inconvenient connections in existing lubrication systems.

[0006] To achieve the above objectives, the intelligent lubrication system of this utility model adopts the following technical solution:

[0007] An intelligent lubrication system includes a main oil supply pipeline and multiple branch oil supply pipelines connected downstream of the main oil supply pipeline. Each branch oil supply pipeline leads to a different oil supply point. The intelligent lubrication system also includes an oil injection valve having an inlet and multiple outlets. The end of the main oil supply pipeline is connected to the inlet of the oil injection valve, and each branch oil supply pipeline is connected to its respective outlet. The intelligent lubrication system also includes a controller, with the oil injection valve electrically connected to the controller. The controller controls the switching action of the oil injection valve to achieve the on / off switching of different branch oil supply pipelines.

[0008] Beneficial Effects: This utility model is an improved invention. The main oil supply pipeline connects to the oil tank. Lubricating oil entering the main oil supply pipeline flows to different oil supply points through multiple branch oil supply pipelines. The oil injection valve has an inlet and multiple outlets. The end of the main oil supply pipeline connects to the inlet of the oil injection valve, and each branch oil supply pipeline connects to its respective outlet. The oil injection valve is electrically connected to a controller. The controller controls the switching action of the oil injection valve to achieve the on / off switching of different branch oil supply pipelines, realizing single-point control of different oil supply points. It eliminates the need for separate valves for each branch oil supply pipeline, greatly reducing the number of valves, simplifying the intelligent lubrication system, and making connections more convenient.

[0009] Furthermore, the oil injection valve includes a valve body and a valve core. The valve body has an internal cavity, and the valve core is rotatably and sealingly installed in the internal cavity. The valve body is provided with multiple oil outlets. Rotating the valve core can connect or block the oil inlet and the oil outlet.

[0010] Beneficial effects: The oil injection valve has a simple structure and is easy to operate. It only requires a drive motor to rotate the valve core to control the switching action of the oil injection valve.

[0011] Furthermore, the valve body is provided with at least one set of oil outlets connecting the inner cavity of the valve body to the outside of the valve body. Each set includes multiple oil outlets, and all oil outlets in the same set are located on the same circumferential surface. The valve core includes a main valve core with a main valve core cavity. A secondary valve core is rotatably installed in the main valve core cavity. The main valve core is provided with a main valve core liquid outlet channel connecting the inner cavity of the main valve core to the outside of the main valve core for each set of oil outlets. The secondary valve core is provided with a secondary valve core cavity connected to the oil inlet. The secondary valve core is provided with a secondary valve core liquid outlet channel connecting the inner cavity of the secondary valve core to the outside of the secondary valve core for each set of oil outlets. When the main valve core liquid outlet channel and the secondary valve core liquid outlet channel are aligned and both are aligned with the oil outlets on the valve body, lubricating oil can flow out from the oil outlet.

[0012] Beneficial effect: When switching oil outlets, one valve core can be rotated first to align its fluid outlet channel with the target oil outlet, and then the other valve core can be rotated to align its fluid outlet channel with the target oil outlet. Even if the fluid outlet channel of one valve core is briefly aligned with the oil outlet it passes during the rotation of the valve cores, no lubricating oil will flow out of the oil outlet because the fluid outlet channel of the other valve core is not aligned, thus avoiding lubricating oil waste.

[0013] Furthermore, all oil outlets in the same group are evenly spaced on the same circumferential surface.

[0014] Beneficial effects: Each oil outlet is used to connect to different oil supply branch lines to deliver lubricating oil to different oil supply points, so that all oil outlets in the same group are evenly distributed on the same circumference, which facilitates the layout of oil supply branch lines and avoids interference or inconvenience in connection caused by the distribution of oil supply branch lines being too dense.

[0015] Furthermore, the oil outlet is provided in two or more sets and is arranged at intervals along the axial direction of the valve body, with each set of oil outlets staggered in the circumferential direction.

[0016] Beneficial effects: This allows the oil injection valve to connect to more oil supply branch lines, enabling oil supply control at more oil supply points. It also allows the oil outlets to be staggered in the circumferential direction, forming more oil outlets at different angles, which facilitates the layout of oil supply branch lines.

[0017] Alternatively, the oil injection valve may include two or more distribution valve groups. Each distribution valve in each distribution valve group has a lubricating oil inlet and multiple lubricating oil outlets. The lubricating oil inlets of each distribution valve in the next lower distribution valve group are connected to the lubricating oil outlets of each distribution valve in the previous higher distribution valve group. The lubricating oil inlet of the distribution valve in the first-stage distribution valve group constitutes the oil inlet of the oil injection valve, and the lubricating oil outlets of each distribution valve in the last-stage distribution valve group constitute the oil outlet of the oil injection valve. The distribution valves in each distribution valve group are electrically connected to the controller.

[0018] Beneficial effects: This allows the oil injection valve to connect to more oil supply branches, control the opening and closing of more oil supply branches, and supply oil to more supply points. Additionally, the upstream distribution valve can also act as a control switch; when a certain upstream distribution valve is closed, no lubricating oil will flow out of any downstream distribution valve connected to that valve, regardless of which lubricating oil outlet it is switched to. Taking a two-stage distribution valve assembly as an example, when it is necessary to switch the oil outlet, the first-stage distribution valve can be closed first, then the lubricating oil outlet of the second-stage distribution valve can be switched to the correct position before opening the first-stage distribution valve. This achieves the switching of the oil supply branches, and during the switching process, no lubricating oil will flow out from other outlets, avoiding lubricating oil waste.

[0019] Furthermore, the distribution valve includes a valve body and a valve core. The valve body has an inner cavity, and the valve core is rotatably and sealingly installed in the inner cavity. The valve core has an inner cavity that communicates with the lubricating oil inlet. The valve body is provided with multiple lubricating oil outlets. Rotating the valve core can connect or block the lubricating oil inlet from different lubricating oil outlets.

[0020] Beneficial effects: The distribution valve has a simple structure and is easy to operate. It only requires a drive motor to rotate the valve core to control the switching action of the distribution valve.

[0021] Furthermore, all the lubricating oil outlets of the same distribution valve are arranged at intervals on the same circumference. The valve core is provided with a valve core liquid outlet channel that connects the inner cavity of the valve core with the outside of the valve core. When the valve core liquid outlet channel is aligned with the lubricating oil outlet on the valve body, the lubricating oil can flow out from the lubricating oil outlet.

[0022] Beneficial effects: This only requires setting one outlet flow channel on the valve core, eliminating the need to consider the setting angle of the outlet flow channel, thus simplifying the valve core structure and making processing easier.

[0023] Furthermore, each oil supply branch line is connected in series with an oil injection volume monitoring sensor, and each oil injection volume monitoring sensor is electrically connected to the controller.

[0024] Beneficial effects: When the controller controls the oil supply through a certain oil supply branch, the oil volume monitoring sensor can monitor the amount of lubricating oil flowing into the corresponding oil supply point in real time. When the set oil volume is reached, the controller cuts off the fluid supply and stops the oil injection. The oil volume monitoring sensor and the controller form a closed-loop control to achieve precise control of the oil volume. At the same time, the flow rate value of the oil volume monitoring sensor can be combined to determine whether there is a blockage or leakage in the oil supply branch. If the oil volume monitoring sensor detects a flow rate value when there is no controlled oil injection action in a certain oil supply branch, it is determined that the oil supply branch is leaking. If the oil volume monitoring sensor does not detect a flow rate value when there is a controlled oil injection action in a certain oil supply branch, it is determined that the oil supply branch is blocked.

[0025] Furthermore, a detection element for detecting whether the oil supply main line is blocked or leaking is connected in series on the oil supply main line.

[0026] Beneficial effects: It can further pinpoint the location of the fault and determine whether the fault occurred in the main fuel supply line. Attached Figure Description

[0027] Figure 1 This is a logic block diagram of Embodiment 1 of the intelligent lubrication system of this utility model;

[0028] Figure 2 This is a schematic diagram of the oil injection valve in Embodiment 1 of the intelligent lubrication system of this utility model;

[0029] Figure 3 This is a schematic diagram showing the connection of two-stage distribution valves in Embodiment 2 of the intelligent lubrication system of this utility model;

[0030] Figure 4 This is a schematic diagram of the distribution valve in Embodiment 2 of the intelligent lubrication system of this utility model;

[0031] Figure 2 In the middle section: 1. Valve body; 102. Positioning inner annular platform; 2. Main valve core; 201. Main valve core outlet channel; 202. Annular groove; 203. Radial channel; 204. Axial channel; 3. Secondary valve core; 301. Secondary valve core outlet channel; 302. Stopping outer annular platform; 4. First magnetic element; 5. First position calibration sensor; 6. First drive motor; 7. Second magnetic element; 8. Second position calibration sensor; 9. Second drive motor;

[0032] Figure 3-4 In the middle: 1. Valve body; 2. Valve core; 201. Valve core outlet flow channel; 202. Valve core inner cavity; 7. Primary distribution valve; 8. Secondary distribution valve; 10. Lubricating oil inlet; 11. Lubricating oil outlet. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0037] Example 1 of the intelligent lubrication system of this utility model:

[0038] like Figure 1 As shown, the intelligent lubrication system includes a lubrication host, a host computer, a controller, a main oil supply line, an oil injection valve, oil supply branch lines, an oil volume monitoring sensor, a pressure sensor, and a weighing sensor. The oil tank, main oil supply line, oil injection valve, and oil supply branch lines are connected sequentially to form a complete oil supply path. The oil injection valve has an inlet and multiple outlets. The end of the main oil supply line connects to the inlet on the oil injection valve, and each outlet connects to a branch oil supply line, which leads to different oil supply points. The oil injection valve is electrically connected to the controller, which controls the switching action of the oil injection valve to open and close different oil supply branch lines.

[0039] The structure of the oil injection valve is as follows: Figure 2As shown, the valve body includes a valve body 1 and a valve core. The valve body 1 is a hollow hexagonal prism structure with an internal cavity. The valve core is rotatably installed in the internal cavity of the valve body. The valve core includes a main valve core 2 and a secondary valve core 3. Both the main valve core 2 and the secondary valve core 3 are cylindrical structures with one end open and the other end closed. The main valve core 2 and the secondary valve core 3 are rotatably fitted together with their openings facing each other. The outer side of the main valve core 2 is rotatably fitted with the inner wall of the valve body 1, and the secondary valve core 3 is rotatably fitted in the internal cavity of the main valve core. A positioning inner ring platform 102 is provided near one axial end in the valve body cavity. The inner diameter of the positioning inner ring platform 102 is smaller than the outer diameter of the main valve core 2 and larger than the outer diameter of the auxiliary valve core 3. The sealing end of the auxiliary valve core 3 is provided with a stop outer ring platform 302. The main valve core 2 is inserted into the valve body cavity from one end, and its open end face presses against the end face of the positioning inner ring platform 102. The auxiliary valve core 3 is inserted into the valve body cavity from the opposite end, and the end face of the stop outer ring platform 302 presses against the end face of the positioning inner ring platform 102. Drive motors are fixed at both axial ends of the valve body 1, wherein the first drive motor 6 is drivenly connected to the sealing end of the main valve core 2, and the second drive motor 9 is drivenly connected to the sealing end of the auxiliary valve core 3.

[0040] The valve body 1 has an oil outlet on each of its six sides, and an oil inlet on one of its sides.

[0041] The outer wall of the main valve core 2 is provided with an annular groove 202 with its opening facing outward. The annular groove 202 and the inner wall of the valve body 1 form an annular chamber, which is connected to the oil inlet. The main valve core 2 is also provided with a radial flow channel 203 and an axial flow channel 204 that are interconnected. One end of the radial flow channel 203 is connected to the annular chamber, and one end of the axial flow channel 204 is connected to the inner cavity of the secondary valve core. Lubricating oil first enters the annular chamber through the oil inlet on the valve body, and then flows into the inner cavity of the secondary valve core through the radial flow channel 203 and the axial flow channel 204 on the main valve core 2.

[0042] The main valve core 2 is provided with a main valve core liquid outlet channel 201 corresponding to the oil outlet. The main valve core liquid outlet channel 201 extends radially and connects the inner cavity of the main valve core with the outside of the main valve core 2. The auxiliary valve core 3 is provided with a auxiliary valve core liquid outlet channel 301 corresponding to the oil outlet. The auxiliary valve core liquid outlet channel 301 extends radially and connects the inner cavity of the auxiliary valve core with the outside of the auxiliary valve core 3. The main valve core liquid outlet channel 201, the auxiliary valve core liquid outlet channel 301 and all the valve body 1 channels are located on the same plane. The main valve core liquid outlet channel 201, the auxiliary valve core liquid outlet channel 301 and all the valve body 1 channels extend radially.

[0043] The main valve core 2 is driven to rotate by the first drive motor 6, and the auxiliary valve core 3 is driven to rotate by the second drive motor 9. When the main valve core outlet channel 201 and the auxiliary valve core outlet channel 301 are aligned and aligned with the same oil outlet, the lubricating oil in the inner cavity of the auxiliary valve core can flow outward sequentially through the auxiliary valve core outlet channel 301, the main valve core outlet channel 201, and the oil outlet. When switching the oil outlet 101, one valve core can be rotated first to align its outlet channel with the target oil outlet, and then the other valve core can be rotated to align its outlet channel with the target oil outlet. Even if the outlet channel of one valve core is briefly aligned with the oil outlet during the rotation of the valve core, no lubricating oil will flow out from the oil outlet because the outlet channel of the other valve core is not aligned, thus avoiding lubricating oil waste.

[0044] In addition, the hydraulic distribution valve is equipped with two sets of position calibration components for calibrating the rotation angles of the main valve core 2 and the auxiliary valve core 3, specifically as follows: Figure 2 As shown, an axial groove is provided on the outer wall of the main valve core 2, and a first magnetic element 4 is installed in the axial groove. A radial groove is provided on the valve body 1, and a first position calibration sensor 5 for detecting the first magnetic element 4 is installed in the radial groove. The first position calibration sensor 5 is used to transmit the position signal of the main valve core 2 to the motor controller. The first magnetic element 4 rotates with the main valve core 2. When the first magnetic element 4 aligns with the first position calibration sensor 5, the first position calibration sensor 5 transmits the position signal of the main valve core 2 to the motor controller, so that the motor controller calibrates the control angle of the first drive motor 6 once, thereby eliminating accumulated errors and ensuring that the main valve core 2 rotates accurately according to the set angle.

[0045] An axial groove is provided on the outer side wall of the secondary valve core 3, and a second magnetic element 7 is installed in the axial groove. A radial groove is provided on the valve body 1, and a second position calibration sensor 8 for detecting the second magnetic element 7 is installed in the radial groove. The second position calibration sensor 8 is used to transmit the position signal of the secondary valve core 3 to the motor controller. The second magnetic element 7 rotates with the secondary valve core 3. When the second magnetic element 7 aligns with the second position calibration sensor 8, the second position calibration sensor 8 transmits the position signal of the secondary valve core 3 to the motor controller, so that the motor controller calibrates the control angle of the second drive motor 9 once, thereby eliminating accumulated errors and ensuring that the secondary valve core 3 rotates accurately according to the set angle.

[0046] Each oil supply branch line is equipped with an oil flow monitoring sensor connected in series to monitor the amount of lubricating oil flowing into the oil supply point in real time. Each oil flow monitoring sensor is electrically connected to the controller, and the sensor provides real-time feedback to the controller on the amount of lubricating oil flowing through. When the set value is reached, the controller cuts off the fluid supply and stops the oil supply. The oil flow monitoring sensor and the controller form a closed-loop control, achieving precise control of the oil flow. Simultaneously, it can also determine whether there is a blockage or leak in the oil supply branch line: when the controller stops the oil supply action of a certain oil supply branch line, if the oil flow monitoring sensor on that branch line detects a flow value, it is determined that the oil supply branch line is leaking; when the controller controls the oil supply through a certain oil supply branch line, if the oil flow monitoring sensor on that branch line does not detect a flow value, it is determined that the oil supply branch line is blocked.

[0047] To further pinpoint the location of the fault and determine whether it occurred in the main oil supply line, a pressure sensor is connected in series on the main oil supply line to collect the oil pressure. The pressure sensor is electrically connected to the controller and feeds back a pressure signal to the controller. When the pump station starts to pressurize the system, the pressure value collected by the pressure sensor and the pressurization rate can be used to determine whether there is a blockage or leak in the main oil supply line.

[0048] A weighing sensor is installed at the bottom of the oil tank. The weighing sensor is electrically connected to the controller. The weighing sensor determines the oil level in the tank by detecting the weight of the tank. When the oil level is lower than the set minimum value, an alarm signal is triggered to remind the staff to add oil. When the oil level reaches the set maximum value, a full fill signal is sent to remind the staff to stop adding oil. This ensures that a certain amount of lubricating oil is always stored in the tank, ensuring that the system can always supply oil normally.

[0049] The host computer is connected to the controller and is placed in the ground debugging room. It is used to count and display the single oil injection volume and oil injection time of all oil supply points. The host computer records the execution time and oil injection volume of each oil injection action. It can use a database to count and analyze the cumulative oil injection volume of any oil supply point within a certain period of time, so that the staff can understand the oil injection status of each oil injection point at any time.

[0050] Example 2: As Figure 3-4As shown, the difference from Embodiment 1 is that the oil injection valve includes a two-stage distribution valve assembly. Each distribution valve in the two-stage assembly has a lubricating oil inlet 10 and multiple lubricating oil outlets 11. Connectors are attached to both the lubricating oil inlet 10 and the lubricating oil outlets 11 to connect to the oil supply pipeline. The distribution valve in the first-stage distribution valve assembly is defined as the first-stage distribution valve 7, and the distribution valve in the second-stage distribution valve assembly is defined as the second-stage distribution valve 8. The lubricating oil inlet 10 of each second-stage distribution valve 8 is connected to each lubricating oil outlet 11 of the first-stage distribution valve 7 via a pipeline. The lubricating oil inlet 10 of the first-stage distribution valve 7 constitutes the oil inlet of the oil injection valve, and each lubricating oil outlet 11 of the second-stage distribution valve 8 constitutes the oil outlet of the oil injection valve. Each distribution valve in the two-stage distribution valve assembly is electrically connected to the controller. The distribution valves in the two-stage distribution valve assemblies have the same structure.

[0051] The structure of the distribution valve will be described in detail below.

[0052] like Figure 4 As shown, the distribution valve includes a valve body 1, which has an internal cavity extending along its axial direction and a lubricating oil inlet 10 connecting the internal cavity to the outside. A valve core 2 is rotatably and sealed within the internal cavity of the valve body. The valve core 2 has an internal cavity 202, which is connected to the lubricating oil inlet 10. The valve body 1 has four lubricating oil outlets 11 connecting the internal cavity to the outside of the valve body. All lubricating oil outlets 11 are located on the same circumferential surface. The valve core 2 has a valve core liquid outlet channel 201 connecting the internal cavity 202 to the outside of the valve core. The valve core liquid outlet channel 201 and all lubricating oil outlets 11 are located on the same plane. When the valve core 2 is rotated, lubricating oil flows out from a certain lubricating oil outlet 11 when the valve core liquid outlet channel 201 is aligned with a certain lubricating oil outlet 11.

[0053] In this embodiment, by setting up a two-stage distribution valve group, the on / off state of more oil supply branch lines can be controlled, supplying oil to more oil supply points. The primary distribution valve 7 has four lubricating oil outlets 11, each lubricating oil outlet 11 is connected to a secondary distribution valve 8 through a branch line, and each secondary distribution valve 8 has four lubricating oil outlets 11, each lubricating oil outlet 11 is connected to an oil supply branch line, thus controlling the on / off state of 16 oil supply branch lines and supplying oil to 16 oil supply points.

[0054] In use, the primary distribution valve 7 can also be used as a control switch. When the primary distribution valve 7 is closed, no lubricating oil will flow out no matter how the valve core 2 of the secondary distribution valve 8 is rotated. Lubricating oil can only flow out when the primary distribution valve 7 is opened, that is, when the liquid outlet channel of the valve core of the primary distribution valve 7 is aligned with one of its lubricating oil outlets 11, and at the same time, the liquid outlet channel of the valve core of the secondary distribution valve 8 connected to the lubricating oil outlet 11 is aligned with one of its lubricating oil outlets 11.

[0055] When it is necessary to switch the lubricating oil outlet 11 on the same secondary distribution valve 8, first rotate the valve core 2 of the primary distribution valve 7 so that the valve core outlet flow channel 201 on it is misaligned with the lubricating oil outlet 11 leading to the secondary distribution valve 8, thus cutting off the oil supply to the secondary distribution valve 8. Then rotate the valve core 2 of the secondary distribution valve 8. When the valve core outlet flow channel 201 of the secondary distribution valve 8 is aligned with the target lubricating oil outlet 11, the primary distribution valve 7 is opened. This achieves the switching of the oil supply branch. During the rotation of the valve core 2 of the secondary distribution valve 8, even if the valve core outlet flow channel 201 is briefly aligned with the passed lubricating oil outlet 11 and conducts, since the primary distribution valve 7 has cut off the lubricating oil supply, no lubricating oil will flow out from these lubricating oil outlets 11, thus avoiding lubricating oil waste.

[0056] When it is necessary to switch the lubricating oil outlet 11 between different secondary distribution valves 8, the secondary distribution valve 8 where the target lubricating oil outlet 11 is located is defined as the target secondary distribution valve. Other secondary distribution valves 8 can be closed first, and only the target secondary distribution valve can be opened so that the valve core outlet flow channel 201 of the target secondary distribution valve is aligned with the target lubricating oil outlet 11. Then, the valve core 2 of the primary distribution valve 7 is rotated so that the valve core outlet flow channel 201 of the primary distribution valve 7 is aligned with the lubricating oil outlet 11 leading to the target secondary distribution valve. This achieves the switching of the oil supply branch. When the valve core 2 of the primary distribution valve 7 is rotated, even if the valve core outlet flow channel 201 of the primary distribution valve 7 is briefly aligned with the lubricating oil outlet 11 and conduction occurs, no lubricating oil will flow out from these secondary distribution valves 8 because the secondary distribution valves 8 connected downstream of these lubricating oil outlets 11 are in the closed state.

[0057] Whether switching the lubricating oil outlet 11 on the same secondary distribution valve 8 or switching the lubricating oil outlet 11 between different secondary distribution valves 8, no lubricating oil will flow out before both distribution valves are fully open. During the rotation of the valve core 2, even if the valve core outlet flow channel 201 of the distribution valve is briefly aligned with the passed lubricating oil outlet 11 and becomes connected, no lubricating oil will flow out from the lubricating oil outlet 11 of the secondary distribution valve 8 because the other distribution valve is still closed. Therefore, lubricating oil waste can be avoided.

[0058] This embodiment provides an implementation of an oil injection valve including a two-stage distribution valve group. Of course, in other embodiments, the oil injection valve may also include a three-stage or higher distribution valve group. Each distribution valve in each stage of the distribution valve group has a lubricating oil inlet and multiple lubricating oil outlets. The lubricating oil inlet of each distribution valve in the next stage distribution valve group is connected to the lubricating oil outlet of each distribution valve in the previous stage distribution valve group. The lubricating oil inlet of the distribution valve in the first stage distribution valve group constitutes the oil inlet of the oil injection valve, and the lubricating oil outlet of each distribution valve in the last stage distribution valve group constitutes the oil outlet of the oil injection valve. The distribution valves in each stage distribution valve group are electrically connected to the controller.

[0059] This embodiment provides an implementation of a distribution valve in which the valve core is rotatably installed in the body cavity of the valve body. Of course, in other embodiments, the valve core of the distribution valve can also be sealed and movably installed in the body cavity of the valve body. The valve body is provided with multiple lubricating oil outlets. Pushing the valve core to move in the valve body can connect or block the lubricating oil inlet with different lubricating oil outlets.

[0060] This embodiment provides an implementation of a distribution valve in which all lubricating oil outlets of the same distribution valve are arranged at intervals on the same circumference. Of course, in other embodiments, all lubricating oil outlets of the same distribution valve can also be arranged at intervals along the axial direction of the valve body. In this case, multiple valve core liquid outlet channels connecting the inner cavity of the valve core and the outside of the valve core can be arranged at intervals along the axial direction on the valve core. When the valve core liquid outlet channel is aligned with the lubricating oil outlet on the valve body, the lubricating oil can flow out from the lubricating oil outlet.

[0061] Example 3: The difference from Example 1 is that instead of a pressure sensor, a flow sensor is connected in series on the main oil supply line to detect whether there is a blockage or leak in the main oil supply line. When there is no oil supply command, if the value monitored by the flow sensor is not zero, it is determined that the main oil supply line is leaking; when there is an oil supply command, if the value monitored by the flow sensor is zero, it is determined that the main oil supply line is blocked.

[0062] Example 4: The difference from Example 1 is that the valve core is sealed and movable in the valve body cavity. The valve body is provided with multiple oil outlets. Pushing the valve core to move in the valve body can connect or block the oil inlet with different oil outlets.

[0063] Example 5: The difference from Example 1 is that the oil injection valve is a single valve core oil injection valve with only one valve core. When the valve core rotates, it can connect or block the oil inlet with different oil outlets.

[0064] Example 6: The difference from Example 1 is that only one set of oil outlets is provided. Of course, in other embodiments, there may be three or more sets of oil outlets, with each set of oil outlets arranged at intervals along the axial direction of the valve body and staggered in the circumferential direction.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. An intelligent lubrication system, comprising a main oil supply pipeline and multiple branch oil supply pipelines connected downstream of the main oil supply pipeline, each branch oil supply pipeline leading to a different oil supply point, characterized in that: The intelligent lubrication system also includes an oil injection valve, which has an oil inlet and multiple oil outlets. The end of the main oil supply pipeline is connected to the oil inlet of the oil injection valve, and each oil supply branch pipeline is connected to each oil outlet. The intelligent lubrication system also includes a controller, which is electrically connected to the oil injection valve. The controller controls the switching action of the oil injection valve to realize the on / off of different oil supply branch pipelines.

2. The intelligent lubrication system according to claim 1, characterized in that: The oil injection valve includes a valve body and a valve core. The valve body has an inner cavity, and the valve core is rotatably and sealingly installed in the inner cavity. The valve body is provided with multiple oil outlets. Rotating the valve core can connect or block the oil inlet from different oil outlets.

3. The intelligent lubrication system according to claim 2, characterized in that: The valve body is provided with at least one set of oil outlets connecting the inner cavity of the valve body to the outside of the valve body. Each set includes multiple oil outlets, and all oil outlets in the same set are located on the same circumferential surface. The valve core includes a main valve core with a main valve core cavity. A secondary valve core is rotatably installed in the main valve core cavity. The main valve core is provided with a main valve core liquid outlet channel connecting the inner cavity of the main valve core to the outside of the main valve core for each set of oil outlets. The secondary valve core is provided with a secondary valve core cavity connected to the oil inlet. The secondary valve core is provided with a secondary valve core liquid outlet channel connecting the inner cavity of the secondary valve core to the outside of the secondary valve core for each set of oil outlets. When the main valve core liquid outlet channel and the secondary valve core liquid outlet channel are aligned and both are aligned with the oil outlets on the valve body, lubricating oil can flow out from the oil outlet.

4. The intelligent lubrication system according to claim 3, characterized in that: All oil outlets in the same group are evenly spaced on the same circumferential surface.

5. The intelligent lubrication system according to claim 3 or 4, characterized in that: The oil outlet is provided in two or more sets and is arranged at intervals along the axial direction of the valve body, with each set of oil outlets staggered in the circumferential direction.

6. The intelligent lubrication system according to claim 1, characterized in that: The oil injection valve includes two or more levels of distribution valve groups. Each distribution valve in each level of the distribution valve group has a lubricating oil inlet and multiple lubricating oil outlets. The lubricating oil inlets of each distribution valve in the next level of the distribution valve group are connected to the lubricating oil outlets of each distribution valve in the previous level of the distribution valve group. The lubricating oil inlet of the distribution valve in the first level of the distribution valve group constitutes the oil inlet of the oil injection valve, and the lubricating oil outlets of each distribution valve in the last level of the distribution valve group constitute the oil outlet of the oil injection valve. The distribution valves in each level of the distribution valve group are electrically connected to the controller.

7. The intelligent lubrication system according to claim 6, characterized in that: The distribution valve includes a valve body and a valve core. The valve body has an inner cavity, and the valve core is rotatably and sealingly installed in the inner cavity. The valve core has an inner cavity that is connected to the lubricating oil inlet. The valve body is provided with multiple lubricating oil outlets. Rotating the valve core can connect or block the lubricating oil inlet from different lubricating oil outlets.

8. The intelligent lubrication system according to claim 7, characterized in that: All lubricating oil outlets of the same distribution valve are arranged at intervals on the same circumference. The valve core is provided with a valve core liquid outlet flow channel connecting the inner cavity of the valve core and the outside of the valve core. When the valve core liquid outlet flow channel is aligned with the lubricating oil outlet on the valve body, the lubricating oil can flow out from the lubricating oil outlet.

9. The intelligent lubrication system according to claim 1, characterized in that: Each oil supply branch line is equipped with an oil injection volume monitoring sensor connected in series, and each oil injection volume monitoring sensor is electrically connected to the controller.

10. The intelligent lubrication system according to claim 1, characterized in that: The main oil supply line is equipped with a detection element for detecting whether the main oil supply line is blocked or leaking.

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