Metal lubricating oil testing device and testing method thereof

Abstract

The invention belongs to the technical field of testing devices, and particularly relates to a metal lubricating oil testing device and a testing method thereof.The metal lubricating oil testing device comprises a substrate, a flow guide assembly, a testing assembly and a backflow assembly; an anti-wear testing machine is arranged on one side wall of the base plate, the flow guide assembly, the testing assembly and the backflow assembly are all installed on the outer side wall of the base plate, the end, close to one side of the anti-wear testing machine, of the flow guide assembly is communicated with an oil receiving box, and a rotary viscometer is arranged at the top of the backflow assembly; the anti-wear testing machine is used for carrying out an anti-wear test on lubricating oil in the oil receiving box, the flow guide assembly is used for sequentially guiding the lubricating oil in the oil receiving box into the testing assembly and the backflow assembly, an oil film test is carried out when the lubricating oil enters the testing assembly, and a rotary viscometer is used for carrying out a viscosity test when the lubricating oil enters the backflow assembly. And the tested lubricating oil enters the oil receiving box through the backflow assembly to form a test cycle, so that the test accuracy and the test functionality are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of testing devices, and in particular relates to a testing device for metal lubricating oil and a testing method thereof. Background Art

[0002] Lubricating oil mainly plays the roles of lubrication, cooling, rust prevention, cleaning, sealing and buffering. It is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts.

[0003] After searching, in the prior art, Chinese patent publication number CN215297082U, authorization announcement date: 2015-3-31, discloses a lubricating oil filtration performance test device, including four mutually symmetrical support columns, the top walls of the support columns are welded and fixed with a support plate, the side walls of the support columns are welded and fixed with an oil collecting box, the top wall of the oil collecting box is penetrated and slidably connected with an oil outlet pipe, the top of the oil outlet pipe is welded and fixed with a test box, the oil outlet pipe penetrates the bottom wall of the test box, the bottom wall of the test box is welded and fixed with an oil inlet cylinder, a filtration test device is arranged inside the test box, an experiment reminder device is arranged on the support plate, and the filtration test device includes a groove. The present application sets structures such as a scale and an alarm clock body, so that the staff can record the time corresponding to the alarm clock body in the initial state and the scale corresponding to the scale, and after the lubricating oil has all flowed out, record the time corresponding to the alarm clock body at this time, so as to obtain the filtration performance of the lubricating oil by calculation.

[0004] However, the device still has the following defects: although the filterability of the lubricating oil can be obtained through calculation, the lubricating oil is already being filtered during the process of injecting the lubricating oil, which affects the accuracy of the calculated filterability of the lubricating oil, and it does not have the function of cyclic testing. Summary of the invention

[0005] In view of the above problems, the present invention provides a testing device for metal lubricating oil, comprising a base plate, a flow guide assembly, a testing assembly and a reflux assembly; an anti-wear tester is arranged on one side wall of the base plate, the flow guide assembly, the testing assembly and the reflux assembly are all mounted on the outer side wall of the base plate, an oil receiving box is connected to the end of the flow guide assembly and the side close to the anti-wear tester, and a rotational viscometer is arranged on the top of the reflux assembly; The guide component guides the lubricating oil in the oil receiving box to the test component and the return component in turn, and performs an oil film test when the lubricating oil enters the test component. When the lubricating oil enters the return component, a viscosity test is performed using a rotational viscometer. The tested lubricating oil then enters the oil receiving box through the return component to form a test cycle.

[0006] Furthermore, the flow guide assembly includes a limit sleeve; a flow guide pipe is provided on the inner wall of the limit sleeve, and a gap is reserved between the flow guide pipe and the limit sleeve, the limit sleeve and the flow guide cover have the same size, and the flow guide cover and the limit sleeve are a spliced ​​curved pipe structure, one end of the limit sleeve is connected to the bottom of the oil receiving box, and a first solenoid valve is provided at the connection between the oil receiving box and the limit sleeve, and the outer wall of the limit sleeve is connected to the first shunt pipe and the second shunt pipe.

[0007] Furthermore, the test assembly includes a sedimentation shell; one end of the sedimentation shell is connected to the other end of the guide pipe, a hollow sliding cavity is opened at the top of the sedimentation shell and on one side close to the guide pipe, a filtering mechanism is slidably connected to the inner wall of the hollow sliding cavity, an oil film testing mechanism is arranged on the other side of the top of the sedimentation shell, the other end of the sedimentation shell is connected to a third diversion pipe, and a first water pump is arranged on the third diversion pipe.

[0008] Furthermore, the filtering mechanism includes a linkage rod; a filter plate is slidably connected to the linkage rod, and the filter plate is fitted and connected to the inner wall of the sedimentation shell, a linkage block is movably connected to the top of the filter plate, a pressure sensor is embedded and installed on the linkage block, and the pressure sensor is movably connected to the filter plate, the linkage block is slidably connected in the hollow sliding cavity, one side wall of the linkage block is transmission-connected to the output end of the electric telescopic rod, and the side of the electric telescopic rod away from the output end is fixedly connected to the outer wall of the sedimentation shell.

[0009] Furthermore, the oil film testing mechanism includes an oil film shell; a temperature transfer ring is fittedly connected to the outer wall of the oil film shell, and a plurality of semiconductor refrigeration plates are embedded and installed on the inner wall of the temperature transfer ring; a moving block is fixedly connected to one side wall of the temperature transfer ring, a screw is threadedly connected to the moving block, and the bottom of the screw is transmission-connected to the output end of the first motor.

[0010] Furthermore, the side of the first motor away from the output end is fixedly connected to the top of the sedimentation shell, the oil film shell is communicated with the first diversion pipe, the inner wall of the oil film shell is fitted with a scraper, the bottom of the scraper is embedded with a temperature sensor, and the inner wall of the oil film shell is also fixedly connected to a plurality of groups of limit blocks, and the top of one group of the limit blocks is fixedly connected to the second motor.

[0011] Furthermore, the output end of the second motor is transmission-connected with a screw, and the screw is threadedly connected to the top of the scraper, the scraper is made of magnetic material, and the scraper is adsorbed and connected to the temperature transfer ring, the bottom of the oil film shell is a conical structure, and a plurality of overflow holes are provided on the outer wall of the oil film shell near the bottom.

[0012] Furthermore, several groups of overflow holes are externally sleeved with recovery rings, the bottom of the recovery rings are connected to a reflux pipe, a suction pump is provided on the reflux pipe, a liquid flow sensor is also provided on the reflux pipe, and the bottom of the reflux pipe is interconnected with the third diversion pipe.

[0013] Furthermore, a sampling tube is embedded in the bottom of the oil film shell, an atomizing nozzle is arranged on the top of the sampling tube, and the horizontal position of the atomizing nozzle is higher than several groups of overflow holes, the bottom of the sampling tube is interconnected with the top of the sedimentation shell, and a second water pump is arranged on the sampling tube.

[0014] A testing method for a metal lubricating oil testing device comprises the following steps: The lubricating oil to be tested is stored in the oil collection box; Carry out anti-wear test on the lubricating oil in the oil box through the anti-wear testing machine; The lubricating oil in the oil receiving box is guided to the test assembly and the return assembly in sequence through the guide assembly, and an oil film test is performed when the lubricating oil enters the test assembly; The viscosity test is carried out by a rotational viscometer, and the lubricating oil after the test enters the oil collecting box through the reflux component to form a test cycle.

[0015] The beneficial effects of the present invention are: 1. The oil receiving box is used to store the lubricating oil to be tested. The lubricating oil in the oil receiving box is subjected to anti-wear test by using an anti-wear testing machine. The lubricating oil in the oil receiving box is guided to the test component and the return component in sequence by using a guide component. When the lubricating oil enters the test component, an oil film test is performed. When the lubricating oil enters the return component, a viscosity test is performed by using a rotational viscometer. The tested lubricating oil then enters the oil receiving box through the return component to form a test cycle, thereby improving the test accuracy and functionality.

[0016] 2. The lubricating oil entering the sedimentation shell is first filtered through the filter plate. At this time, the pressure sensor is used to detect the resistance of the filter plate to filter the lubricating oil. When there are too many waste chips generated by the friction of the lubricating oil, the filter plate will be blocked, increasing the thrust of the filter plate on the pressure sensor, which is used to detect the adsorption effect of the lubricating oil on the waste chips during the anti-wear process.

[0017] 3. After being connected with the oil film shell through the first shunt pipe, hot air formed by the electric heating wire can be injected into the oil film shell to change the temperature inside the oil film shell, so that the oil film can be tested under a high temperature environment. The temperature of the temperature transfer ring can also be lowered during the continuous operation of the semiconductor refrigeration plate on the temperature transfer ring. When the temperature transfer ring rises and falls along the radial direction of the screw rod, the oil film shell as a whole can be cooled, so that the oil film can be tested under a low temperature environment.

[0018] 4. After the output end of the second motor is separated from the scraper, the scraper is connected to the temperature transfer ring by magnetic adsorption. When the temperature transfer ring moves along the radial direction of the screw rod, the scraper is synchronously driven to clean the oil film on the inner wall of the oil film housing. The cleaned oil film flows into the recovery ring through several groups of overflow holes. While the suction pump continues to work, the oil film is extracted and passed through a liquid flow sensor to test the extracted oil film content and analyze the oil film content under different temperature conditions.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The structure of the testing device for metal lubricating oil according to the embodiment of the present invention is shown. Figure 1 ; Figure 2 The structure of the testing device for metal lubricating oil according to the embodiment of the present invention is shown. Figure 2 ; Figure 3 The structure of the testing device for metal lubricating oil according to the embodiment of the present invention is shown. Figure 3 ; Figure 4 A schematic diagram showing the connection of a flow guide assembly, a test assembly and a return assembly according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of a flow guide assembly according to an embodiment of the present invention is shown; Figure 6 A schematic diagram showing the structure of a test assembly according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the structure of a filtering mechanism according to an embodiment of the present invention is shown; Figure 8 The structure diagram of the oil film testing mechanism according to the embodiment of the present invention is shown in FIG. Figure 1 ; Fig. 9 The structure diagram of the oil film testing mechanism according to the embodiment of the present invention is shown in FIG. Figure 2 ; Fig.10A schematic structural diagram of a reflux assembly according to an embodiment of the present invention is shown.

[0022] In the figure: 1, substrate; 2, anti-wear test machine; 3, oil receiving box; 4, guide assembly; 41, limit sleeve; 42, guide pipe; 43, first shunt pipe; 44, second shunt pipe; 5, test assembly; 51, sedimentation shell; 52, filter mechanism; 521, linkage rod; 522, filter plate; 523, linkage block; 524, pressure sensor; 525, electric telescopic rod; 53, oil film test mechanism; 531, oil film shell; 532, temperature transfer ring; 533, moving block; 534, screw rod; 535, first motor; 53 6. Scraper; 537. Temperature sensor; 538. Limit block; 539. Second motor; 5310. Overflow hole; 5311. Sampling tube; 5312. Second water pump; 5313. Atomizing nozzle; 5314. Recovery ring; 5315. Reflux pipe; 5316. Suction pump; 54. Third diversion pipe; 55. First water pump; 6. Reflux assembly; 61. Reflux shell; 62. Temperature control chamber; 63. Gas block; 64. Liquid block; 65. Three-way valve; 7. Rotational viscometer; 8. Flow guide cover; 9. Air pipe; 10. Air pump. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The embodiment of the present invention provides a metal lubricant testing device, including a substrate 1, a flow guide component 4, a testing component 5 and a reflux component 6; illustratively, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown.

[0025] An anti-wear testing machine 2 is provided on one side wall of the substrate 1, and the guide component 4, the test component 5 and the return component 6 are all installed on the outer side wall of the substrate 1. The end of the guide component 4 and the side close to the anti-wear testing machine 2 are connected to the oil receiving box 3, and the top of the return component 6 is provided with a rotational viscometer 7. Several groups of air pipes 9 are passed through the outer wall of the substrate 1, and one end of several groups of the air pipes 9 is connected to a guide cover 8, one end of several groups of the air pipes 9 is provided with an air pump 10, and the inner walls of several groups of the air pipes 9 are provided with electric heating wires.

[0026] Furthermore, the oil receiving box 3, the flow guide assembly 4, the testing assembly 5 and the reflux assembly 6 are all interconnected.

[0027] Specifically, the oil receiving box 3 is used to store the lubricating oil to be tested, and the lubricating oil in the oil receiving box 3 is subjected to an anti-wear test by using the anti-wear testing machine 2. The lubricating oil in the oil receiving box 3 is sequentially diverted to the test component 5 and the reflux component 6 by using the guide component 4, and an oil film test is performed when the lubricating oil enters the test component 5. When the lubricating oil enters the reflux component 6, a viscosity test is performed by using the rotational viscometer 7. The tested lubricating oil then enters the oil receiving box 3 through the reflux component 6 to form a test cycle.

[0028] The guide assembly 4 includes a limiting sleeve 41; illustratively, as Figure 5 shown.

[0029] The inner wall of the limiting sleeve 41 is provided with a guide tube 42, and a gap is reserved between the guide tube 42 and the limiting sleeve 41. The limiting sleeve 41 has the same size as the guide cover 8, and the guide cover 8 and the limiting sleeve 41 are a curved pipe structure formed by splicing. One end of the limiting sleeve 41 is connected to the bottom of the oil receiving box 3, and a first solenoid valve is provided at the connection between the oil receiving box 3 and the limiting sleeve 41. The outer wall of the limiting sleeve 41 is connected to the first shunt pipe 43 and the second shunt pipe 44.

[0030] The test assembly 5 includes a sedimentation housing 51; illustratively, as Figure 6 shown.

[0031] One end of the sedimentation shell 51 is connected to the other end of the guide pipe 42, a hollow sliding cavity is opened at the top of the sedimentation shell 51 and on one side close to the guide pipe 42, a filtering mechanism 52 is slidably connected to the inner wall of the hollow sliding cavity, an oil film testing mechanism 53 is arranged on the other side of the top of the sedimentation shell 51, the other end of the sedimentation shell 51 is connected to a third diversion pipe 54, and a first water pump 55 is arranged on the third diversion pipe 54.

[0032] The filtering mechanism 52 includes a linkage rod 521; illustratively, Figure 7 shown.

[0033] A filter plate 522 is slidably connected to the linkage rod 521, and the filter plate 522 is fitted and connected to the inner wall of the sedimentation shell 51. A linkage block 523 is movably connected to the top of the filter plate 522. A pressure sensor 524 is embedded and installed on the linkage block 523, and the pressure sensor 524 is movably connected to the filter plate 522. The linkage block 523 is slidably connected in the hollow sliding cavity, and one side wall of the linkage block 523 is transmission-connected to the output end of an electric telescopic rod 525, and the side of the electric telescopic rod 525 away from the output end is fixedly connected to the outer wall of the sedimentation shell 51.

[0034] The oil film testing mechanism 53 includes an oil film housing 531; illustratively, Figure 8 and Fig. 9 shown.

[0035] The outer wall of the oil film shell 531 is fitted with a temperature transfer ring 532, and the inner wall of the temperature transfer ring 532 is embedded with a plurality of semiconductor refrigeration plates. A moving block 533 is fixedly connected to one side wall of the temperature transfer ring 532, and a screw 534 is threadedly connected to the moving block 533. The bottom of the screw 534 is transmission-connected to the output end of the first motor 535. The side of the first motor 535 away from the output end is fixedly connected to the top of the sedimentation shell 51. The oil film shell 531 is communicated with the first shunt pipe 43. A scraper 536 is fitted with the inner wall of the oil film shell 531, and a temperature sensor 537 is embedded with the bottom of the scraper 536. The inner wall of the oil film shell 531 is also fixedly connected to a plurality of limit blocks 538. The top of a group of limit blocks 538 is fixedly connected to a second motor 539. The output end of the second motor 539 is transmission-connected to a screw, and the screw is threadedly connected to the top of the scraper 536. 6 is a magnetic material, and the scraper 536 is adsorbed and connected to the temperature transfer ring 532. The bottom of the oil film housing 531 is a conical structure, and the outer wall of the oil film housing 531 is provided with a plurality of overflow holes 5310 near the bottom. The outer parts of the plurality of overflow holes 5310 are sleeved with recovery rings 5314. The bottom of the recovery ring 5314 is connected with a return pipe 5315, and a suction pump 5316 is provided on the return pipe 5315. A liquid flow sensor is provided, and the bottom of the reflux pipe 5315 is interconnected with the third diversion pipe 54, a sampling tube 5311 is embedded in the bottom of the oil film shell 531, an atomizing nozzle 5313 is provided on the top of the sampling tube 5311, and the horizontal position of the atomizing nozzle 5313 is higher than the plurality of overflow holes 5310, the bottom of the sampling tube 5311 is interconnected with the top of the sedimentation shell 51, and a second water pump 5312 is provided on the sampling tube 5311.

[0036] The reflux assembly 6 includes a reflux housing 61; illustratively, as Fig.10 shown.

[0037] A temperature control chamber 62 is provided at one end of the return shell 61, the outer wall of the return shell 61 is connected to the second shunt pipe 44, and the second shunt pipe 44 and the temperature control chamber 62 are communicated with each other, a gas block 63 is fixedly connected to the inner wall of the temperature control chamber 62, a liquid block 64 is fixedly connected to the inner wall of the return shell 61, one side of the liquid block 64 is communicated with a three-way valve 65, and the other end of the three-way valve 65 extends into the oil receiving box 3.

[0038] Specifically, after the anti-wear test machine 2 has finished testing the lubricating oil in the oil receiving box 3, the first solenoid valve is opened to centrally flow the lubricating oil in the oil receiving box 3 into the guide pipe 42, and in the process of the lubricating oil flowing into the guide pipe 42, the air pump 10 and the electric heating wire in the air pipe 9 are used in cooperation to quickly form cold air or hot air in the limit sleeve 41 and the guide cover 8, so as to cool down or heat up the lubricating oil in the guide pipe 42; The filter plate 522 first filters the lubricating oil entering the sedimentation housing 51. At this time, the pressure sensor 524 is used to detect the resistance of the filter plate 522 to filter the lubricating oil. When too much waste debris is generated by the friction of the lubricating oil, the filter plate 522 will be blocked, and the thrust of the filter plate 522 on the pressure sensor 524 will be increased, so as to detect the adsorption effect of the lubricating oil on the waste debris during the anti-wear process; The sedimentation shell 51 absorbs the lubricating oil passing through the filter plate 522, and then the lubricating oil is precipitated in the sedimentation shell 51. After the bottom end of the sampling tube 5311 contacts the upper lubricating oil in the sedimentation shell 51, the precipitated lubricating oil is absorbed into the atomizing nozzle 5313 during the continuous operation of the second water pump 5312. The atomizing nozzle 5313 sprays the lubricating oil uniformly on the inner wall of the oil film shell 531 in the form of mist, and waits for the lubricating oil on the inner wall of the oil film shell 531 to slide down to the overflow hole 5310, so that an oil film is formed on the inner wall of the oil film shell 531. After the first shunt pipe 43 is connected to the oil film housing 531, hot air formed by the electric heating wire can be injected into the oil film housing 531 to change the temperature in the oil film housing 531, so that the oil film can be tested in a high temperature environment. The temperature of the temperature transfer ring 532 can also be reduced during the continuous operation of the semiconductor refrigeration sheet on the temperature transfer ring 532, and when the temperature transfer ring 532 is lifted and lowered along the radial direction of the screw rod 534, the entire oil film housing 531 can be cooled, so that the oil film can be tested in a low temperature environment. After the output end of the second motor 539 is separated from the scraper 536, the scraper 536 is connected to the temperature transfer ring 532 by magnetic adsorption. When the temperature transfer ring 532 moves along the radial direction of the screw rod 534, the scraper 536 is synchronously driven to clean the oil film on the inner wall of the oil film housing 531. The cleaned oil film flows into the recovery ring 5314 through a plurality of overflow holes 5310. When the suction pump 5316 continues to work, the oil film is extracted and passed through a liquid flow sensor. The content of the extracted oil film is tested to analyze the content of the oil film under different temperature conditions. The reflux pipe 5315 transfers the tested oil film to the third diversion pipe 54, and under the action of the first water pump 55, the lubricating oil in the sedimentation shell 51 and the third diversion pipe 54 is centrally transferred to the reflux shell 61. After the reflux shell 61 is connected with the second diversion pipe 44, cold air or hot air is injected into the temperature control chamber 62 to change the temperature of the lubricating oil in the reflux shell 61, so that the rotational viscometer 7 can test the lubricating oil under different temperature conditions. The lubricating oil after the viscosity test continues to flow back to the oil receiving box 3 through the three-way valve 65 for multiple cycle tests of the lubricating oil.

[0039] The working principle of the metal lubricant testing device proposed in the embodiment of the present invention is as follows: After the lubricating oil in the oil receiving box 3 is tested by the anti-wear testing machine 2, the first solenoid valve is opened to collect the lubricating oil in the oil receiving box 3 and flow into the guide pipe 42. In the process of the lubricating oil flowing into the guide pipe 42, the air pump 10 and the electric heating wire in the air pipe 9 are used in combination to quickly form cold air or hot air in the limit sleeve 41 and the guide cover 8, so as to cool down or heat up the lubricating oil in the guide pipe 42. The lubricating oil entering the sedimentation housing 51 is first filtered by the filter plate 522. At this time, the pressure sensor 524 is used to detect the resistance of the filter plate 522 to filter the lubricating oil. When too much waste debris is generated by the friction of the lubricating oil, the filter plate 522 will be blocked, and the thrust of the filter plate 522 on the pressure sensor 524 will be increased, which is used to detect the adsorption effect of the lubricating oil on the waste debris during the anti-wear process; After the lubricating oil passing through the filter plate 522 is adsorbed by the sedimentation shell 51, the lubricating oil is precipitated in the sedimentation shell 51, and after the bottom end of the sampling tube 5311 contacts the upper lubricating oil in the sedimentation shell 51, the precipitated lubricating oil is adsorbed into the atomizing nozzle 5313 during the continuous operation of the second water pump 5312, and the lubricating oil is sprayed uniformly on the inner wall of the oil film shell 531 in the form of mist under the action of the atomizing nozzle 5313, and after the lubricating oil on the inner wall of the oil film shell 531 slides down to the overflow hole 5310, an oil film is formed on the inner wall of the oil film shell 531; After the first shunt pipe 43 is connected with the oil film housing 531, hot air formed by the electric heating wire can be injected into the oil film housing 531 to change the temperature in the oil film housing 531, so that the oil film can be tested in a high temperature environment. The temperature of the temperature transfer ring 532 can also be reduced during the continuous operation of the semiconductor refrigeration sheet on the temperature transfer ring 532, and when the temperature transfer ring 532 is raised and lowered along the radial direction of the screw rod 534, the entire oil film housing 531 is cooled, so that the oil film can be tested in a low temperature environment. After the output end of the second motor 539 is separated from the scraper 536, the scraper 536 is connected to the temperature transfer ring 532 by magnetic adsorption. When the temperature transfer ring 532 moves along the radial direction of the screw rod 534, the scraper 536 is synchronously driven to clean the oil film on the inner wall of the oil film housing 531. The cleaned oil film flows into the recovery ring 5314 through a plurality of overflow holes 5310. When the suction pump 5316 continues to work, the oil film is extracted and passed through a liquid flow sensor. The content of the extracted oil film is tested to analyze the content of the oil film under different temperature conditions. The tested oil film is transferred to the third diversion pipe 54 through the reflux pipe 5315, and the lubricating oil in the sedimentation shell 51 and the third diversion pipe 54 is centrally transferred to the reflux shell 61 under the action of the first water pump 55. After the reflux shell 61 is connected with the second diversion pipe 44, cold air or hot air is injected into the temperature control chamber 62 to change the temperature of the lubricating oil in the reflux shell 61, so that the rotational viscometer 7 can test the lubricating oil under different temperature conditions. The lubricating oil after the viscosity test continues to flow back to the oil receiving box 3 through the three-way valve 65 for multiple cycle tests of the lubricating oil.

[0040] Based on the above-mentioned metal lubricant testing device, an embodiment of the present invention further provides a method for testing the metal lubricant testing device, comprising the following steps: The lubricating oil to be tested is stored in the oil collection box; Carry out anti-wear test on the lubricating oil in the oil box through the anti-wear testing machine; The lubricating oil in the oil receiving box is guided to the test assembly and the return assembly in sequence through the guide assembly, and an oil film test is performed when the lubricating oil enters the test assembly; The viscosity test is carried out by a rotational viscometer, and the lubricating oil after the test enters the oil collecting box through the reflux component to form a test cycle.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A testing device for metal lubricating oil, characterized in that: The invention comprises a base plate (1), a flow guide assembly (4), a test assembly (5) and a return assembly (6); an anti-wear test machine (2) is arranged on one side wall of the base plate (1); the flow guide assembly (4), the test assembly (5) and the return assembly (6) are all mounted on the outer side wall of the base plate (1); an oil receiving box (3) is connected to the end of the flow guide assembly (4) and the side close to the anti-wear test machine (2); and a rotational viscometer (7) is arranged on the top of the return assembly (6); The flow guide component (4) guides the lubricating oil in the oil receiving box (3) to the test component (5) and the return component (6) in sequence, and performs an oil film test when the lubricating oil enters the test component (5). When the lubricating oil enters the return component (6), a viscosity test is performed using a rotational viscometer (7). The lubricating oil after the test then enters the oil receiving box (3) through the return component (6) to form a test cycle.

2. The metal lubricant testing device according to claim 1, characterized in that: The flow guide assembly (4) comprises a limiting sleeve (41); a flow guide tube (42) is arranged on the inner wall of the limiting sleeve (41), and a gap is reserved between the flow guide tube (42) and the limiting sleeve (41); the limiting sleeve (41) and the flow guide cover (8) have the same size, and the flow guide cover (8) and the limiting sleeve (41) are a curved pipe structure formed by splicing; one end of the limiting sleeve (41) is connected to the bottom of the oil receiving box (3), and a first solenoid valve is arranged at the connection between the oil receiving box (3) and the limiting sleeve (41); and the outer wall of the limiting sleeve (41) is connected to a first shunt tube (43) and a second shunt tube (44).

3. The metal lubricant testing device according to claim 1, characterized in that: The test assembly (5) comprises a sedimentation shell (51); one end of the sedimentation shell (51) is connected to the other end of the flow guide pipe (42); a hollow sliding cavity is provided at the top of the sedimentation shell (51) and on one side close to the flow guide pipe (42); a filter mechanism (52) is slidably connected to the inner wall of the hollow sliding cavity; an oil film test mechanism (53) is provided at the other side of the top of the sedimentation shell (51); the other end of the sedimentation shell (51) is connected to a third flow diversion pipe (54), and a first water pump (55) is provided on the third flow diversion pipe (54).

4. The metal lubricant testing device according to claim 3, characterized in that: The filtering mechanism (52) comprises a linkage rod (521); a filter plate (522) is slidably connected to the linkage rod (521), and the filter plate (522) is closely connected to the inner wall of the sedimentation shell (51); a linkage block (523) is movably connected to the top of the filter plate (522); a pressure sensor (524) is embedded and installed on the linkage block (523), and the pressure sensor (524) is movably connected to the filter plate (522); the linkage block (523) is slidably connected in the hollow sliding cavity; a side wall of the linkage block (523) is transmission-connected to the output end of an electric telescopic rod (525); and a side of the electric telescopic rod (525) away from the output end is fixedly connected to the outer wall of the sedimentation shell (51).

5. The metal lubricant testing device according to claim 3, characterized in that: The oil film testing mechanism (53) comprises an oil film housing (531); a temperature transfer ring (532) is fittedly connected to the outer wall of the oil film housing (531), and a plurality of groups of semiconductor cooling plates are embedded and installed on the inner wall of the temperature transfer ring (532); a moving block (533) is fixedly connected to a side wall of the temperature transfer ring (532); a screw rod (534) is threadedly connected to the moving block (533); and the bottom of the screw rod (534) is drivingly connected to the output end of the first motor (535).

6. The metal lubricant oil testing device according to claim 5, characterized in that: The side of the first motor (535) away from the output end is fixedly connected to the top of the sedimentation shell (51); the oil film shell (531) and the first shunt pipe (43) are interconnected; a scraper (536) is fittedly connected to the inner wall of the oil film shell (531); a temperature sensor (537) is embedded in the bottom of the scraper (536); a plurality of groups of limit blocks (538) are also fixedly connected to the inner wall of the oil film shell (531); and a second motor (539) is fixedly connected to the top of one group of limit blocks (538).

7. The metal lubricant testing device according to claim 6, characterized in that: The output end of the second motor (539) is transmission-connected to a screw, and the screw is threadedly connected to the top of a scraper (536). The scraper (536) is made of magnetic material, and the scraper (536) is adsorbedly connected to a temperature transfer ring (532). The bottom of the oil film housing (531) is a conical structure, and a plurality of overflow holes (5310) are provided on the outer wall of the oil film housing (531) near the bottom.

8. The metal lubricant oil testing device according to claim 7, characterized in that: A recovery ring (5314) is sleeved on the outside of a plurality of groups of overflow holes (5310), the bottom of the recovery ring (5314) is connected to a return pipe (5315), and a suction pump (5316) is provided on the return pipe (5315). A liquid flow sensor is also provided on the return pipe (5315), and the bottom of the return pipe (5315) is connected to the third shunt pipe (54).

9. The metal lubricant oil testing device according to claim 8, characterized in that: A sampling tube (5311) is embedded in the bottom of the oil film housing (531), an atomizing nozzle (5313) is arranged on the top of the sampling tube (5311), and the horizontal position of the atomizing nozzle (5313) is higher than the plurality of groups of overflow holes (5310), the bottom of the sampling tube (5311) is communicated with the top of the sedimentation housing (51), and a second water pump (5312) is arranged on the sampling tube (5311).

10. A method for testing a metal lubricant testing device according to any one of claims 1 to 9, characterized in that: The test method includes: The lubricating oil to be tested is stored in the oil collection box; Carry out anti-wear test on the lubricating oil in the oil box through the anti-wear testing machine; The lubricating oil in the oil receiving box is guided to the test assembly and the return assembly in sequence through the guide assembly, and an oil film test is performed when the lubricating oil enters the test assembly; The viscosity test is carried out by a rotational viscometer, and the lubricating oil after the test enters the oil collecting box through the reflux component to form a test cycle.

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