Lubrication system for a mechanical device

Abstract

The application discloses a lubricating system for a mechanical device, which comprises a pumping assembly for pumping lubricating medium, a conveying pipeline assembly, one end of the conveying pipeline assembly being connected with the pumping assembly, the other end of the conveying pipeline assembly being connected with a lubricating space of a lubricating component module of the mechanical device, and being used for conveying the lubricating medium pumped by the pumping assembly to the lubricating space, a waste medium discharge pipeline assembly connected with a first outlet of the lubricating space and used for discharging waste lubricating medium in a lubricating medium filling cavity, an image collector arranged on one side of a second outlet of the waste medium discharge pipeline assembly and used for collecting images at a position of the second outlet, a display in communication connection with the image collector and used for displaying the images in real time, and an operation table in communication connection with the pumping assembly and used for operating the pumping or stopping of the pumping of the lubricating medium. The lubricating system has simple structure and can conveniently know the filling condition of the lubricating medium when a detection module fails.

Description

Technical Field

[0001] This application belongs to the field of lubrication system technology, and specifically relates to a lubrication system for mechanical equipment. Background Technology

[0002] Mechanical equipment generally has moving parts, which form friction pairs. Taking construction machinery as an example, construction machinery is an important part of the equipment manufacturing industry and is used in multiple fields. Its working conditions are complex, the objects it works on are varied, and it often operates under variable loads, placing high demands on the reliability and adaptability of the machines. In order to ensure that bearings, hinge shafts, and other friction pairs can operate well under long-term high-intensity construction operations, it is necessary to regularly add lubricating medium to effectively lubricate components such as shaft pins and bushings.

[0003] However, existing technologies mostly use ordinary lubrication methods to add lubricating media to components. This method is labor-intensive, cannot automatically monitor the lubrication condition of components, cannot provide real-time lubrication, and cannot accurately determine the fullness of the lubricating medium. Although a few automatic lubrication systems that add lubricating media to components are equipped with oil delivery components and detection sensors (such as pressure sensors) on the oil delivery pipelines of the oil delivery components to basically meet the needs of automatic monitoring and automatic lubrication, they neglect how to conveniently understand the fullness of the lubricating medium on the components when the detection sensors malfunction. Utility Model Content

[0004] The purpose of this application is to provide a lubrication system for mechanical equipment. This lubrication system has a simple structure and can conveniently understand the fullness of the lubricating medium on the parts to be lubricated when the detection module fails.

[0005] To achieve the above objectives, this application provides a lubrication system for mechanical equipment, the lubrication system comprising: Pumping assembly used to pump out lubricating media; The delivery pipeline assembly has one end connected to the pumping assembly and the other end connected to the lubrication space of the mechanical equipment's component module to be lubricated, and is used to deliver the lubricating medium pumped out by the pumping assembly to the lubrication space. Waste medium discharge pipeline assembly is connected to the first outlet of the lubrication space and is used to discharge waste lubrication medium from the lubrication medium filling cavity; An image acquisition device is installed on one side of the second outlet of the waste medium discharge pipeline assembly and is used to acquire images at the location of the second outlet. A display that communicates with the image acquisition unit and is used to display images in real time; The control panel is connected in communication with the pumping assembly and is used to operate the pumping or stopping of the pumping of lubricating medium.

[0006] In the embodiments of this application, the display is mounted on the operating table of the engineering equipment.

[0007] In the embodiments of this application, the image acquisition device is a black light full-color camera or an infrared night vision camera.

[0008] In embodiments of this application, the lubrication system further includes a pressure detector disposed on the component module to be lubricated and used to detect the pressure within the lubrication space.

[0009] In embodiments of this application, the lubrication system further includes a temperature detector disposed on the component module to be lubricated and used to detect the temperature of the component module to be lubricated.

[0010] In embodiments of this application, the pumping assembly includes a lubricating medium storage tank and a lubrication pump, there are multiple modules of components to be lubricated, and the delivery pipeline assembly includes: The first pipeline is connected to the lubricating medium storage tank, and the lubricating pump is installed on the first pipeline; The distributor has its first inlet connected to the end of the first pipe furthest from the lubricating medium storage tank. Multiple second pipes, one end of each second pipe is connected to each of the third outlets of the distributor, and the other end of each second pipe is connected to the second inlet of the lubrication space of each component module to be lubricated.

[0011] In embodiments of this application, the lubrication system further includes a manually operated oil filling cup disposed on the distributor and connected to an inflow channel within the distributor.

[0012] In embodiments of this application, the waste medium discharge pipeline assembly includes: The third pipe connects to the first outlet of the lubrication space; The pressure check valve is located at the end of the third pipeline away from the lubrication space. The pressure check valve opens when subjected to a preset pressure.

[0013] In an embodiment of this application, the third pipe is distributed vertically, and the second outlet of the waste medium discharge pipe assembly is formed on the pressure check valve with the opening facing downward.

[0014] In embodiments of this application, the inner diameter of the third pipe is greater than or equal to the diameter of the first outlet.

[0015] As can be seen from the above technical solution, the lubrication system for mechanical equipment includes a pumping assembly, a conveying pipeline assembly, a waste medium discharge pipeline assembly, an image acquisition unit, a display, and an operating console. The pumping assembly is used to pump out the lubricating medium; one end of the conveying pipeline assembly is connected to the pumping assembly, and the other end of the conveying pipeline assembly is connected to the lubrication space of the mechanical equipment's component module to be lubricated, for conveying the lubricating medium pumped out by the pumping assembly to the lubrication space; the waste medium discharge pipeline assembly is connected to the first outlet of the lubrication space and is used to discharge the waste lubricating medium in the lubrication medium filling chamber; the image acquisition unit is set on one side of the second outlet of the waste medium discharge pipeline assembly and is used to acquire the image at the location of the second outlet; the display is communicatively connected to the image acquisition unit and is used to display the image in real time; the operating console is communicatively connected to the pumping assembly and is used to operate the pumping out or stop the pumping out of the lubricating medium. This lubrication system has a simple structure. By setting up an operating console, pump assembly, and delivery pipeline components, it can remotely add lubricating medium to the modules to be lubricated, making operation simple. By setting up a waste medium discharge pipeline assembly, image acquisition device, and display, operators can easily observe the discharge of waste lubricating medium and the color of the discharged liquid on the display. In other words, operators can promptly and conveniently understand the lubricating medium filling status in the lubrication space when the detection module malfunctions, avoiding situations where waste lubricating medium is not completely discharged or excessive lubricating medium is added, thus further improving the reliability of the lubrication system.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the composition of the lubrication system in an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures 1-Pump assembly; 2-Transport pipeline assembly; 201-First pipeline; 202-Distributor; 203-Second pipeline; 3-Component module to be lubricated; 4-Waste medium discharge pipeline assembly; 401-Third pipeline; 402-Pressure check valve; 5-Image acquisition unit; 6-Display; 7-Pressure detector; 8-Manual oil filling cup; 9-Controller. Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] Embodiments of this application provide a lubrication system for mechanical equipment, such as... Figure 1 As shown, the lubrication system includes: Pumping assembly 1 is used to pump out lubricating medium; The conveying pipeline assembly 2 has one end connected to the pumping assembly 1 and the other end connected to the lubrication space of the mechanical equipment's component module 3, and is used to convey the lubricating medium pumped out by the pumping assembly 1 to the lubrication space. Waste medium discharge pipeline assembly 4 is connected to the first outlet of the lubrication space and is used to discharge the waste lubrication medium in the lubrication medium filling cavity; Image acquisition device 5 is installed on one side of the second outlet of waste medium discharge pipeline assembly 4 and is used to acquire images at the location of the second outlet; Display 6 is connected in communication with image acquisition unit 5 and is used to display images in real time; The control panel is communicatively connected to the pumping assembly 1 and is used to operate the pumping out or stop the pumping out of the lubricating medium.

[0021] Specifically, the lubricating medium (in this embodiment, the lubricating medium refers to fresh lubricating medium) can be lubricating oil. The component module 3 to be lubricated includes a bearing housing and a bearing mounted on the bearing housing. The lubrication space is formed by the bearing housing and the bearing. The lubrication system also includes a controller 9 and a detection module for automatically detecting the lubricating medium filling status. The control panel is equipped with buttons (or buttons) for enabling the pumping assembly 1 to pump the lubricating medium and stopping the pumping of the lubricating medium. The controller 9 is communicatively connected to the buttons (or buttons), the pumping assembly 1, the image acquisition unit 5, the detection module, and the display 6.

[0022] Before lubrication of the component module 3 to be lubricated, there is residual waste lubricating medium (such as waste oil) in the lubrication space of the component module 3 to be lubricated. When it is necessary to lubricate the component module 3 to be lubricated, the operator presses the button on the control panel to make the pumping assembly 1 pump the lubricating medium. The button sends a corresponding signal to the controller 9. After receiving the signal, the controller 9 controls the pumping assembly 1 to pump out the lubricating medium. After flowing out of the pumping assembly 1, the lubricating medium passes through the delivery pipeline assembly 2 to reach the lubrication space, and discharges the residual waste lubricating medium in the lubrication space from the first outlet. The discharged waste lubricating medium flows into the waste medium discharge pipeline assembly 4 and flows out from the second outlet of the waste medium discharge pipeline assembly 4. While controlling the pumping assembly 1 to pump the lubricating medium, the controller 9 also controls the image acquisition device 5 to acquire the image of the location of the second outlet and send the acquired image to the controller 9. The controller 9 then controls the display 6 (such as a screen) to display the image of the location of the second outlet in real time. The operator can observe the image on the screen to know the discharge status of the waste lubricating medium and the color of the discharged liquid. If the discharged liquid is dark (such as brown, dark brown or black), it means that the discharged liquid is waste lubricating medium. At this time, it cannot be guaranteed that the waste lubricating medium has been completely discharged from the lubrication space, and the pumping assembly 1 should continue to pump the lubricating medium. Conversely, if the discharged liquid is light (such as light yellow, light brown or light tea), it means that the discharged liquid is newly added lubricating medium. At this time, the waste lubricating medium has been completely discharged from the lubrication space, and the pumping assembly 1 should stop pumping the lubricating medium.

[0023] The lubrication system provided in this embodiment has a simple structure. By setting up an operating table, a pump assembly 1, and a delivery pipeline assembly 2, it is possible to remotely add lubricating medium to the component module 3 to be lubricated, making operation simple. By setting up a waste medium discharge pipeline assembly 4, an image acquisition device 5, and a display 6, the operator can easily observe the discharge of waste lubricating medium and the color of the discharged liquid on the display 6. That is, the operator can promptly and conveniently understand the addition of lubricating medium in the lubrication space when the detection module malfunctions (such as a sensor failure in the detection module), avoiding situations where waste lubricating medium is not completely discharged or excessive lubricating medium is added, thus further improving the reliability of the lubrication system.

[0024] In one embodiment of this application, the display 6 is installed on the operating table of the engineering equipment. The operating table in this embodiment can be installed in the operating room or driver's cab of the engineering equipment. The above-mentioned arrangement enables the operator to understand the filling status of the lubricating medium in the lubrication space in a timely and convenient manner after operating and controlling the pumping assembly 1 to pump the lubricating medium, and to quickly stop the pumping assembly 1 to pump the lubricating medium after the waste lubricating medium is completely discharged, so as to avoid energy waste.

[0025] In one embodiment of this application, the image acquisition device 5 is a black light full-color camera or an infrared night vision camera. Since the environment where the component module 3 to be lubricated is located may be a dark environment with low brightness, the black light full-color camera or infrared night vision camera can ensure the color reproduction of the objects in the acquired image even if it is acquired in a dark environment with low brightness. This makes it easier for the operator to more accurately identify the color of the liquid flowing out from the second outlet and to determine whether the pumping assembly 1 needs to stop pumping the lubricating medium based on the identification result.

[0026] In one embodiment of this application, the lubrication system further includes a pressure detector 7 disposed on the component module 3 to be lubricated and used to detect the pressure within the lubrication space.

[0027] Specifically, in this embodiment, the pressure detector 7 can be selected as a pressure sensor. The pressure sensor is installed on the bearing end cover and is communicatively connected to the controller 9. The pressure sensor sends the detection results to the controller 9. The controller 9 plots the pressure change curve in the lubrication space based on the detection results of the pressure sensor. The pressure change curve successively presents a relatively stable high plateau stage (in this stage, fresh lubricating medium begins to be injected, pushing the waste lubricating medium out of the lubrication space. At this time, the lubrication space is mainly filled with waste lubricating medium with higher viscosity), a pressure drop inflection point stage (in this stage, the flow resistance in the lubrication space will suddenly drop due to the lower viscosity and higher cleanliness of the fresh lubricating medium in the lubrication space), a continuously stable rising stage (in this stage, fresh lubricating medium continues to be injected into the lubrication space, and the resistance in the lubrication space begins to increase), and a pressure rapid rise inflection point stage (in this stage, after the lubrication space is completely filled with incompressible fresh lubricating medium, the continued pumping of fresh lubricating medium will cause the pressure in the lubrication space to rise sharply). After this, the controller 9 can determine that the waste lubricating medium in the lubrication space has been completely discharged and the fresh lubricating medium has been added. The controller 9 can then automatically control the pumping assembly 1 to stop pumping out the lubricating medium. The setting of the pressure detector 7 can improve the automation level of the lubrication system and help reduce labor costs.

[0028] In one embodiment of this application, the lubrication system further includes a temperature detector disposed on the component module 3 to be lubricated and used to detect the temperature of the component module 3 to be lubricated.

[0029] Specifically, in this embodiment, the temperature detector can be selected as a temperature sensor. The temperature sensor is communicatively connected to the controller 9. The temperature sensor sends the temperature detection result to the controller 9. The controller 9 compares the temperature value detected by the temperature sensor with the preset temperature value. If the temperature value detected by the temperature sensor is higher than the preset temperature value within a preset time period, or if the temperature value is higher than the preset temperature value and the difference between the two is greater than the preset difference, it indicates that the component module 3 to be lubricated is in a state that needs to be lubricated. At this time, the controller 9 controls the pumping assembly 1 to automatically pump out the lubricating medium to lubricate the component module 3 to be lubricated in a timely manner.

[0030] Furthermore, in this embodiment, the detection module includes a pressure detector 7, a temperature detector, and a vibration detector. The vibration detector is communicatively connected to the controller 9 and is used to detect the vibration state of the component module 3 to be lubricated. If the vibration detector detects that the vibration intensity of the component module 3 to be lubricated reaches a preset vibration intensity, and / or the vibration frequency of the component module 3 to be lubricated reaches a preset vibration frequency, and / or the volume of the vibration noise of the component module 3 to be lubricated reaches a preset decibel, it indicates that the component module 3 to be lubricated is in a state that needs to be lubricated. At this time, the controller 9 controls the pumping assembly 1 to automatically pump out the lubricating medium to lubricate the component module 3 to be lubricated in a timely manner.

[0031] In this embodiment, the display 6 can display not only the images acquired by the image acquisition device 5, but also the amount of lubricating medium added, the time of lubricating medium addition, the temperature of the component module 3 to be lubricated, the volume of vibration noise, and the operating status of the lubrication system, etc. The operator can perform automatic and interventional control based on the above information.

[0032] In one embodiment of this application, the pumping assembly 1 includes a lubricating medium storage tank and a lubricating pump, there are multiple component modules 3 to be lubricated, and the delivery pipeline assembly 2 includes: The first pipe 201 is connected to the lubricating medium storage tank, and the lubricating pump is installed on the first pipe 201; Distributor 202, the first inlet of distributor 202 is connected to the end of first pipe 201 away from the lubricating medium storage tank; Multiple second pipes 203, one end of each second pipe 203 is connected to each third outlet of the distributor 202, and the other end of each second pipe 203 is connected to the second inlet of the lubrication space of each component module 3 to be lubricated.

[0033] Specifically, the lubricating medium storage tank stores lubricating medium. In this embodiment, there are two component modules 3 to be lubricated. The distributor 202 has an inflow channel and multiple outflow channels inside. The inflow channel is connected to the first pipe 201, and the multiple outflow channels are all connected to the inflow channel. The distributor 202 is also equipped with multiple switching valves (such as solenoid valves). The switching valves are communicatively connected to the controller 9 and are used to open or close the outflow channels. The second pipe 203 is connected to the outflow channels. The first inlet is formed on the inflow channel, and the third outlet is formed on the outflow channel. When multiple component modules 3 to be lubricated need to be lubricated simultaneously, the controller 9 controls all the switching valves on the distributor to open and controls the lubrication pump to perform the pumping function. Under the pumping action of the lubrication pump, the lubricating medium in the lubricating medium storage tank flows out and flows sequentially through the first pipe 201, the inflow channel, the outflow channel, and the second pipe 203 before reaching the lubrication space through the second inlet. The above settings enable the lubrication system to lubricate multiple component modules 3 to be lubricated simultaneously, improving the lubrication efficiency of the engineering equipment. Furthermore, operators can also control the opening and closing of the switch valve according to actual needs, so as to specifically lubricate the lubricated parts module 3 that require lubrication.

[0034] In one embodiment of this application, the lubrication system further includes a manually operated oil filling cup 8 disposed on the distributor 202 and connected to the inflow channel within the distributor 202. The manually operated oil filling cup 8 has a manually operated filling channel communicating with the inflow channel. The manually operated oil filling cup 8 is also equipped with a switch valve, which is a pressure check valve 402 that can only be opened in one direction, allowing the lubricating medium to flow unidirectionally within the manually operated filling channel. When the pump assembly 1 malfunctions, the operator can apply sufficient pressure to the switch valve using the oil filling gun to open it and connect the manually operated filling channel. The oil filling gun injects the lubricating medium into the manually operated filling channel. The lubricating medium flows sequentially through the manually operated filling channel, the inflow channel, the outflow channel (where the switch valve corresponding to the outflow channel is opened), and the second pipe 203 before reaching the lubrication space through the second inlet. The addition of the filling channel further expands the application scenarios of this lubrication system.

[0035] In one embodiment of this application, the waste medium discharge pipeline assembly 4 includes: The third pipe 401 is connected to the first outlet of the lubrication space; The pressure check valve 402 is located at the end of the third pipeline 401 away from the lubrication space. The pressure check valve 402 is in the open state after being subjected to a preset pressure.

[0036] Specifically, the second outlet is formed on the pressure check valve 402. This pressure check valve 402 can only open in one direction. That is, when the waste lubricating medium passes through the third pipe 401 and reaches the pressure check valve 402, applying pressure to it, the pressure on the pressure check valve 402 gradually increases as the waste lubricating medium is continuously discharged until it reaches the preset pressure. At this point, the pressure check valve 402 opens, and the waste lubricating medium flows out from the second outlet. When the pressure on the pressure check valve 402 is less than the preset pressure, the pressure check valve 402 automatically closes. The design of the pressure check valve 402 also prevents air from entering, ensuring the reliability and safety of the lubrication system during startup.

[0037] In one embodiment of this application, the third pipe 401 is distributed vertically, and the second outlet of the waste medium discharge pipe assembly 4 is formed on the pressure check valve 402 with the opening facing downward. The above arrangement can reduce the flow resistance of the waste lubricating medium in the third pipe 401 and avoid the formation of potential blockage points, so as to facilitate the rapid and smooth discharge of the waste lubricating medium.

[0038] In one embodiment of this application, the inner diameter of the third pipe 401 is greater than or equal to the diameter of the first outlet. Further, in this embodiment, the ratio between the inner diameter of the third pipe 401 and the diameter of the first outlet is in the range of 1-2. This ratio range allows the high-viscosity waste lubricating medium to flow out more smoothly and quickly by gravity, which is beneficial to shorten the maintenance time of the waste medium discharge pipe assembly 4. It can also prevent the waste lubricating medium discharge from being interrupted due to air resistance in the third pipe 401. In addition, the waste lubricating medium may contain impurities such as metal shavings, sludge, and gel-like oxides generated by wear. The above-mentioned arrangement can prevent impurity particles from accumulating in the third pipe 401 and causing blockage.

[0039] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A lubrication system for mechanical equipment, characterized in that, The lubrication system includes: Pumping assembly (1) is used to pump out lubricating medium; A delivery pipeline assembly (2) is provided, one end of which is connected to the pumping assembly (1), and the other end of which is connected to the lubrication space of the mechanical equipment's component module (3) to be lubricated, for delivering the lubricating medium pumped out by the pumping assembly (1) to the lubrication space. Waste medium discharge pipeline assembly (4) is connected to the first outlet of the lubrication space and is used to discharge the waste lubrication medium of the lubrication space; An image acquisition device (5) is installed on one side of the second outlet of the waste medium discharge pipeline assembly (4) and is used to acquire images at the location of the second outlet; The display (6) is communicatively connected to the image acquisition unit (5) and is used to display the image in real time; The control panel is communicatively connected to the pumping assembly (1) and is used to operate the pumping or stopping of the pumping of the lubricating medium.

2. The lubrication system for mechanical equipment according to claim 1, characterized in that, The display (6) is mounted on the operating table of the mechanical equipment.

3. The lubrication system for mechanical equipment according to claim 1, characterized in that, The image acquisition device (5) is a black light full-color camera or an infrared night vision camera.

4. The lubrication system for mechanical equipment according to claim 1, characterized in that, The lubrication system also includes a pressure detector (7) disposed on the lubricated component module (3) and used to detect the pressure in the lubrication space.

5. The lubrication system for mechanical equipment according to claim 1, characterized in that, The lubrication system also includes a temperature detector disposed on the component module (3) to be lubricated and used to detect the temperature of the component module (3).

6. The lubrication system for mechanical equipment according to claim 1, characterized in that, The pumping assembly (1) includes a lubricating medium storage tank and a lubricating pump. There are multiple modules (3) of components to be lubricated. The conveying pipeline assembly (2) includes: The first pipe (201) is connected to the lubricating medium storage tank, and the lubricating pump is installed on the first pipe (201); Distributor (202), the first inlet of which is connected to the end of the first pipe (201) away from the lubricating medium storage tank; Multiple second pipes (203) are provided, one end of each second pipe (203) is connected to each third outlet of the distributor (202), and the other end of each second pipe (203) is connected to the second inlet of the lubrication space of each component module (3) to be lubricated.

7. The lubrication system for mechanical equipment according to claim 6, characterized in that, The lubrication system also includes a manually operated oil filling cup (8) disposed on the distributor (202) and connected to the inflow channel within the distributor (202).

8. The lubrication system for mechanical equipment according to any one of claims 1-7, characterized in that, The waste medium discharge pipeline assembly (4) includes: The third pipe (401) is connected to the first outlet of the lubrication space; A pressure check valve (402) is disposed at the end of the third pipe (401) away from the lubrication space. The pressure check valve (402) is in an open state after being subjected to a preset pressure.

9. The lubrication system for mechanical equipment according to claim 8, characterized in that, The third pipe (401) is distributed vertically, and the second outlet of the waste medium discharge pipe assembly (4) is formed on the pressure check valve (402) with the opening facing downward.

10. The lubrication system for mechanical equipment according to claim 8, characterized in that, The inner diameter of the third pipe (401) is greater than or equal to the diameter of the first outlet.

Images