Lubricating grease evaporation loss tester
By introducing precise ventilation control, stirring, and support structures into the grease evaporation loss tester, the measurement error problem caused by improper ventilation in the grease evaporation loss test was solved, and accurate evaporation loss measurement under high temperature conditions was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-17
AI Technical Summary
Existing grease evaporation loss testing instruments may produce inaccurate results if ventilation control is inadequate, potentially underestimating or overestimating evaporation loss and failing to accurately reflect the evaporation of grease under high-temperature conditions.
A grease evaporation loss tester was designed, comprising a ventilation component, an adjustment component, a stirring component, a support component, and a temperature controller. By precisely controlling the ventilation volume, stirring the sample evenly, fixing the evaporation dish, and supporting the electronic balance, the accuracy of the testing process is ensured.
It enables precise measurement of grease evaporation loss under high-temperature conditions, avoiding errors caused by excessive or insufficient ventilation, and ensuring the accuracy and reliability of test results.
Smart Images

Figure CN224137110U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lubricating grease production technology, specifically a lubricating grease evaporation loss tester. Background Technology
[0002] Lubricating greases have wide applications in industrial production and daily life, and their performance directly affects the operating efficiency and service life of mechanical equipment. Evaporation loss is one of the important indicators for measuring the performance of lubricating greases, reflecting their ability to maintain stable performance under high-temperature conditions. To accurately assess the evaporation loss of lubricating greases, specialized testing instruments are required for precise measurement.
[0003] Because grease releases moisture and other volatile substances during evaporation, if there is no ventilation, these volatiles will accumulate around the sample, forming a saturated vapor layer. This hinders the further evaporation of other volatile components in the grease, preventing the evaporation process from proceeding fully and resulting in a lower measured evaporation loss value. On the other hand, excessive ventilation will cause the volatile components on the sample surface to be quickly carried away, resulting in an excessively fast evaporation rate. This may cause some components in the grease to evaporate rapidly under non-natural conditions, which does not match the actual evaporation situation in use. Therefore, we propose a grease evaporation loss tester. Utility Model Content
[0004] The purpose of this invention is to provide a grease evaporation loss tester to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a grease evaporation loss tester, comprising an instrument body, an electronic scale mounted on the instrument body, and an evaporation dish disposed inside the instrument body, and further comprising:
[0006] A ventilation assembly, comprising a ventilation opening on the top of the instrument body, wherein a dustproof net is provided on the side of the top of the instrument body near the ventilation opening;
[0007] The adjustment assembly includes a slide rail fixed to the top of the instrument body, on which two opening and closing plates are slidably connected. A bracket is provided on the top of the instrument body near the opening and closing plates, and an electric push rod is provided on the top of the bracket. First sliding grooves are provided on both sides of the top of the bracket near the electric push rod. A connecting rod is fixedly connected to the output end of the electric push rod. The connecting rod is slidably connected in the first sliding groove. A suction cup is connected to the bottom of the connecting rod, and the suction cup is attached to the top of the opening and closing plates.
[0008] Furthermore, a retainer is provided inside the instrument body on the side near the evaporating dish, and the evaporating dish is secured in the retainer.
[0009] The above technical solution is adopted: by setting a retainer, the evaporating dish is limited and fixed to prevent shaking.
[0010] Furthermore, the instrument body is provided with a stirring assembly, which includes a horizontal plate, a housing at the top of the horizontal plate, a first motor inside the housing, a stirring rod at the bottom of the horizontal plate, the stirring rod being fixedly connected to the output end of the first motor, and a spiral blade on the stirring rod.
[0011] The above technical solution is adopted: by setting up a stirring component, the sample is kept in a uniform state during the evaporation process, avoiding local overheating or moisture accumulation.
[0012] Furthermore, a lifting assembly is provided on the inner wall of the instrument body near the horizontal plate. The lifting assembly includes a second slide groove, in which a lead screw is rotatably connected. A slider is threaded onto the lead screw, and the horizontal plate is connected to the slider.
[0013] The above technical solution allows for the adjustment of the position of the stirring component by setting up a lifting component, thus facilitating the placement and removal of the evaporating dish.
[0014] Furthermore, a support assembly is provided on the side of the instrument body near the electronic scale. The support assembly includes a fixed base, a fixed rod is fixedly connected to the fixed base, a support rod is connected to the fixed rod, a receiving plate is connected to the support rod, and the electronic scale is located on top of the receiving plate.
[0015] The above technical solution involves setting up a support component to fix the electronic scale and support the evaporating dish during the test.
[0016] Furthermore, the instrument body is provided with an opening and closing assembly, which includes a rotating shaft, a sliding door rotatably connected to the rotating shaft, and a handle provided on the sliding door.
[0017] The above technical solution allows for easy opening of the instrument's interior to facilitate the placement and removal of the evaporating dish by setting up an opening and closing component.
[0018] Furthermore, the instrument body is equipped with a temperature controller, and a heating element is installed inside the instrument body.
[0019] The above technical solution involves setting up a temperature controller, which contains a temperature sensor to detect and adjust the internal temperature in real time.
[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0021] In this invention, by setting an adjustment component, problems such as sample splashing, excessively fast evaporation rate, and heat loss caused by excessive ventilation can be avoided. At the same time, it can also solve the problems of low evaporation efficiency and inaccurate test results caused by insufficient ventilation. It solves the problem that when grease releases moisture and other volatile substances during evaporation, if there is no ventilation, these volatile substances will accumulate around the sample, forming a saturated vapor layer, which will hinder the further volatilization of other volatile components in the grease, making the evaporation process insufficient and resulting in a lower measured evaporation loss value. On the other hand, excessive ventilation will cause the volatile components on the sample surface to be quickly carried away, resulting in an excessively fast evaporation rate. This may cause some components in the grease to evaporate rapidly under non-natural conditions, which does not match the evaporation situation in actual use. Attached Figure Description
[0022] Figure 1 This is a front view of a grease evaporation loss tester.
[0023] Figure 2 This is a diagram of the internal structure of a grease evaporation loss tester.
[0024] Figure 3 This is a structural diagram of the ventilation component in a grease evaporation loss tester.
[0025] Figure 4 This is a side view of a grease evaporation loss tester.
[0026] Numbering on the map:
[0027] 1. Instrument body; 2. Electronic scale; 3. Evaporating dish;
[0028] 4. Ventilation components; 41. Ventilation openings; 42. Dust screens;
[0029] 5. Adjustment component; 51. Slide rail; 52. Opening / closing plate; 53. Bracket; 54. First slide groove; 55. Electric push rod; 56. Connecting rod; 57. Suction cup;
[0030] 6. Stirring assembly; 61. Horizontal plate; 62. Shell; 63. Stirring rod; 64. Spiral blade;
[0031] 7. Lifting assembly; 71. Second slide rail; 72. Lead screw;
[0032] 8. Support assembly; 81. Fixing base; 82. Fixing rod; 83. Support rod; 84. Receiving plate;
[0033] 9. Opening and closing components; 91. Hinge; 92. Sliding door; 93. Handle;
[0034] 10. Card slot; 11. Temperature controller. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] like Figures 1-4 As shown, this utility model provides a technical solution: a grease evaporation loss tester, including an instrument body 1, an electronic scale 2 mounted on the instrument body 1, and an evaporation dish 3 mounted inside the instrument body 1, and further including:
[0037] Ventilation component 4 includes a ventilation opening 41 on the top of the instrument body 1, a dustproof net 42 on the side of the top of the instrument body 1 near the ventilation opening 41, a temperature controller 11 on the instrument body 1, and a heating tube inside the instrument body 1.
[0038] Adjustment component 5 includes a slide rail 51 fixed to the top of the instrument body 1. An opening and closing plate 52 is slidably connected to the slide rail 51. There are two opening and closing plates 52. A bracket 53 is provided on the top of the instrument body 1 near the opening and closing plate 52. An electric push rod 55 is provided on the top of the bracket 53. First slide grooves 54 are provided on both sides of the top of the bracket 53 near the electric push rod 55. A connecting rod 56 is fixedly connected to the output end of the electric push rod 55. The connecting rod 56 is slidably connected in the first slide groove 54. A suction cup 57 is connected to the bottom of the connecting rod 56. The suction cup 57 is attached to the top of the opening and closing plate 52.
[0039] Specifically, the internal temperature is controlled by the temperature controller 11 to carry out evaporation. During the evaporation process, the electric push rod 55 is activated simultaneously. The electric push rod 55 drives the connecting rod 56 to slide in the first slide groove 54. Simultaneously, the suction cup 57 at the bottom of the connecting rod 56 drives the opening and closing plate 52 to slide in the slide rail 51, thereby exposing the vent 41. The size of the opening and closing can be controlled. During the ventilation process, the dustproof net 42 will block external dust from entering the interior.
[0040] Furthermore, such as Figure 4 As shown: The instrument body 1 is provided with an opening and closing component 9, which includes a rotating shaft 91. A sliding door 92 is rotatably connected to the rotating shaft 91. A handle 93 is provided on the sliding door 92. Pulling the handle 93 opens the sliding door 92 through the rotating shaft 91 and puts the evaporating dish 3 inside.
[0041] The above methods also have the drawback that, after evaporation, the sample may exhibit uneven conditions, such as surface crusting and uneven distribution of residual moisture. Figure 2As shown: The instrument body 1 is equipped with a stirring assembly 6, which includes a horizontal plate 61. A housing 62 is provided on the top of the horizontal plate 61, and a first motor is provided inside the housing 62. A stirring rod 63 is provided at the bottom of the horizontal plate 61. The stirring rod 63 is fixedly connected to the output end of the first motor. A spiral blade 64 is provided on the stirring rod 63. A lifting assembly 7 is provided on the inner wall of the instrument body 1 near the horizontal plate 61. The lifting assembly 7 includes a second slide groove 71. A lead screw 72 is rotatably connected in the second slide groove 71. A slider is threaded on the lead screw 72. The horizontal plate 61 is connected to the slider. First, the second motor is turned on to drive the lead screw 72 to rotate in the second slide groove 71, thereby driving the horizontal plate 61 to slide, so that the stirring rod 63 and the spiral blade 64 are located in the evaporating dish 3. Then, the first motor is turned on to drive the stirring rod 63 and the spiral blade 64 to rotate, so as to uniformly stir the grease in the evaporating dish 3.
[0042] The above solution also has the problem that the electronic scale 2 is not supported, and therefore cannot provide stability to the evaporating dish 3 during the test. Figure 1 As shown: A support assembly 8 is provided on the side of the instrument body 1 near the electronic scale 2. The support assembly 8 includes a fixed base 81, a fixed rod 82 is fixedly connected to the fixed base 81, a support rod 83 is connected to the fixed rod 82, and a support plate 84 is connected to the support rod 83. The electronic scale 2 is located on the top of the support plate 84. By setting the support assembly 8, the electronic scale 2 is fixed and the evaporating dish 3 during the test is supported.
[0043] Furthermore, such as Figure 2 As shown: Inside the instrument body 1, a retainer 10 is provided on the side near the evaporating dish 3. The evaporating dish 3 is secured in the retainer 10. By setting the retainer 10, the evaporating dish 3 is limited and fixed to prevent shaking.
[0044] The working principle provided by this utility model is as follows: Figures 1-4As shown: First, the evaporating dish 3 is placed on the electronic scale 2 for testing. Then, the handle 93 is pulled to open the sliding door 92 via the pivot 91, and the evaporating dish 3 is placed inside the holder 10. The internal temperature is controlled by the temperature controller 11 for evaporation. During the evaporation process, the electric push rod 55 is activated simultaneously. The electric push rod 55 drives the connecting rod 56 to slide in the first slide groove 54. The connecting rod 56 simultaneously drives the opening and closing plate 52 to slide in the slide rail 51 via the suction cup 57 at the bottom, thereby exposing the vent 41 and controlling the size of the opening and closing. During the ventilation process, the dustproof net 42 will block external dust from entering the interior. During the evaporation process, the second motor is activated simultaneously to drive the lead screw 72 to rotate in the second slide groove 71, thereby driving the horizontal plate 61 to slide, so that the stirring rod 63 and the spiral blade 64 are located in the evaporating dish 3. Then, the first motor is activated to drive the stirring rod 63 and the spiral blade 64 to rotate, so as to evenly stir the grease in the evaporating dish 3. Finally, the evaporated evaporating dish 3 is placed on the electronic scale 2 for weighing.
[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A grease evaporation loss tester, comprising an instrument body (1), an electronic scale (2) arranged on the instrument body (1), and an evaporation dish (3) arranged inside the instrument body (1), characterized in that, Also includes: Ventilation assembly (4), the ventilation assembly (4) includes a ventilation opening (41) opened on the top of the instrument body (1), and a dustproof net (42) is provided on the side of the top of the instrument body (1) near the ventilation opening (41); Adjustment component (5), the adjustment component (5) includes a slide rail (51) fixed to the top of the instrument body (1), an opening and closing plate (52) is slidably connected on the slide rail (51), two opening and closing plates (52) are provided, a bracket (53) is provided on the top of the instrument body (1) near the opening and closing plate (52), an electric push rod (55) is provided on the top of the bracket (53), a first sliding groove (54) is provided on both sides of the top of the bracket (53) near the electric push rod (55), a connecting rod (56) is fixedly connected to the output end of the electric push rod (55), the connecting rod (56) is slidably connected in the first sliding groove (54), a suction cup (57) is connected to the bottom of the connecting rod (56), and the suction cup (57) is adsorbed on the top of the opening and closing plate (52).
2. A grease evaporation loss tester according to claim 1, wherein: The instrument body (1) has a retainer (10) located on the side of the evaporating dish (3) inside, and the evaporating dish (3) is secured in the retainer (10).
3. The grease evaporation loss tester of claim 1, wherein: The instrument body (1) is provided with a stirring assembly (6), which includes a horizontal plate (61), a housing (62) on the top of the horizontal plate (61), a first motor inside the housing (62), a stirring rod (63) at the bottom of the horizontal plate (61), the stirring rod (63) being fixedly connected to the output end of the first motor, and a spiral blade (64) on the stirring rod (63).
4. A grease evaporation loss tester according to claim 3, wherein: A lifting assembly (7) is provided on the inner wall of the instrument body (1) near the horizontal plate (61). The lifting assembly (7) includes a second slide groove (71), a lead screw (72) is rotatably connected in the second slide groove (71), a slider is threaded on the lead screw (72), and the horizontal plate (61) is connected to the slider.
5. The grease evaporation loss tester of claim 1 wherein: A support assembly (8) is provided on the side of the instrument body (1) near the electronic scale (2). The support assembly (8) includes a fixed base (81), a fixed rod (82) is fixedly connected to the fixed base (81), a support rod (83) is connected to the fixed rod (82), a support plate (84) is connected to the support rod (83), and the electronic scale (2) is located on top of the support plate (84).
6. The grease evaporation loss tester of claim 1, wherein: The instrument body (1) is provided with an opening and closing assembly (9), which includes a rotating shaft (91), a sliding door (92) is rotatably connected to the rotating shaft (91), and a handle (93) is provided on the sliding door (92).
7. The grease evaporation loss tester of claim 1 wherein: The instrument body (1) is equipped with a temperature controller (11), and a heating tube is installed inside the instrument body (1).