CN111420427A - Method and device for extracting wear particles in used lubricating grease - Google Patents
Method and device for extracting wear particles in used lubricating grease Download PDFInfo
- Publication number
- CN111420427A CN111420427A CN202010361203.9A CN202010361203A CN111420427A CN 111420427 A CN111420427 A CN 111420427A CN 202010361203 A CN202010361203 A CN 202010361203A CN 111420427 A CN111420427 A CN 111420427A
- Authority
- CN
- China
- Prior art keywords
- wear particles
- straight tube
- cavity
- grease
- tube portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0476—Moving receptacles, e.g. rotating receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0492—Applications, solvents used
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/005—Working-up used lubricants to recover useful products ; Cleaning using extraction processes; apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0083—Lubricating greases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
- G01N2001/4083—Concentrating samples by other techniques involving separation of suspended solids sedimentation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Lubricants (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a method and a device for extracting wear particles in used lubricating grease, wherein the method for extracting the wear particles in the used lubricating grease comprises the steps of adding the used lubricating grease into a bottle body and adding an organic solvent; blocking the bottle mouth with a bottle stopper, repeatedly shaking the bottle body, standing for a period of time, and precipitating abrasion particles to be layered with the organic solution; slowly inclining the bottle mouth, pouring out the layered organic solvent and depositing the wear particles at the bottom of the bottle; tetrachloroethylene and neat lubricant were added and the wear particles were poured out with the tetrachloroethylene and neat lubricant. The extraction device and the extraction method provided by the invention can extract the wear particles from the grease, so that the pretreatment is performed on the subsequent preparation of the ferrographic sheet, a feasible experimental scheme is provided for the ferrographic analysis of the grease, and a technical approach is provided for evaluating the wear state of grease lubrication equipment.
Description
Technical Field
The invention relates to the field of ferrographic analysis experiments, in particular to a method and a device for extracting wear particles in lubricating grease.
Background
Ferrography, a technique for separating metal particles from lubricating oil by magnetic force and analyzing the particles, is a common method for evaluating the wear condition of equipment, and its principle is as follows: the wear particles in the lubricating oil are deposited on the substrate under the action of the magnetic field of an analytical ferrograph to form an analytical ferrograph sheet, and then the form, size and coverage area of the wear particles are observed and measured under a ferrograph microscope to analyze the wear condition of the machine.
At present, the analysis ferrographic detection object specified in SH/T0573-93 (2003) standard is a fluid oil product such as lubricating oil, and only the abrasion state of equipment parts (such as a gear box and the like) lubricated by the oil can be evaluated. When preparing the analytical type iron sheet using the lubricating oil, the experimental process is mainly that the analytical type iron sheet is prepared by heating the sample → diluting the sample → the diluted sample flows through the glass substrate → washing the residual sample on the glass substrate → drying the glass substrate.
The ferrographic analysis technology is used for evaluating the wear state of equipment parts (such as bearings) lubricated by grease, and is realized by carrying out ferrographic analysis on the lubricating grease used for the bearings, and the core of the ferrographic analysis technology is how to prepare analytical ferrographic sheets used for the lubricating grease, which is the difficulty not involved in the current standard. Because the lubricating grease is composed of lubricating oil and soap base, the whole lubricating grease is pasty and cannot be directly diluted, and therefore necessary and reasonable pretreatment is required.
Therefore, the conventional device and method for preparing the ferrographic tablet cannot be directly applied to an analysis experiment using grease, and the ferrographic tablet is prepared after the wear particles in the grease are extracted. How to design a new method and device for extracting wear particles in lubricating grease actually belongs to one of the important research and development subjects at present.
Disclosure of Invention
The invention aims to provide a method for extracting wear particles in used lubricating grease, which can effectively extract the wear particles in the used lubricating grease, thereby overcoming the defect that the existing preparation method of the iron sheet does not have a pretreatment procedure of the used lubricating grease.
In order to solve the technical problem, the invention provides a method for extracting wear particles in lubricating grease, which comprises the following extraction steps:
a. adding the lubricating grease into a bottle body;
b. adding an organic solvent;
c. blocking the bottle mouth with a bottle stopper and repeatedly vibrating the bottle body;
d. standing for a period of time to allow the abrasive particles to precipitate and separate from the organic solution;
e. slowly inclining the bottle mouth to enable abrasion particles to be left at the bottom of the bottle and pouring out the organic solvent;
f. tetrachloroethylene and neat lubricant were added and the wear particles were poured out with the tetrachloroethylene and neat lubricant.
As an improvement of the invention, the bottle body comprises a straight pipe part and a cavity part, the cavity part is in a hollow spherical shape, the straight pipe part is a hollow round pipe, the straight pipe part and the outer wall of the cavity part are connected into a whole and communicated with each other, the straight pipe part is vertically arranged and positioned above the cavity part, and part of the outer wall of the straight pipe part is tangent to part of the outer wall of the cavity part, so that the straight pipe part and the cavity part are integrally in a b-shaped bottle body with an opening at the upper end and a closed lower end.
Further, the specific operations of the extraction steps e and f are as follows:
e. slowly adjusting the positions of the straight pipe part and the cavity part to enable the straight pipe part to be positioned below the upper cavity part and the opening to be inclined downwards, leaving the wear particles at the bottom of the cavity part and enabling the organic solvent to flow out;
f. adding tetrachloroethylene and pure lubricating oil, adjusting the positions of the straight pipe part and the cavity part again to ensure that the straight pipe part is arranged on the lower cavity part and the opening is inclined downwards, and pouring out the wear particles along with the tetrachloroethylene and the pure lubricating oil.
Further, the organic solvent in step b is capable of dissolving the soap base in the grease.
Further, the organic solvent is petroleum ether.
In addition, the invention also provides a device for extracting the wear particles in the lubricating grease, which can facilitate the organic solvent to wash the lubricating grease in use, and effectively separate and take out the wear particles from the soap base and the lubricating oil, thereby overcoming the defect that the existing device for preparing the iron sheet can not be directly applied to the lubricating grease.
In order to solve the technical problems, the invention provides a device for extracting wear particles in lubricating grease, which comprises a straight pipe part and a cavity part, wherein the cavity part is hollow spherical, the straight pipe part is a hollow round pipe, the straight pipe part and the outer wall of the cavity part are connected into a whole and communicated with each other, the straight pipe part is vertically arranged and positioned above the cavity part, and part of the outer wall of the straight pipe part is tangent to part of the outer wall of the cavity part, so that the straight pipe part and the cavity part are integrally a b-shaped bottle body with an opening at the upper end and a closed lower end.
As a improvement of the invention, the straight tube part and the cavity part are made of glass or other non-oil-soluble transparent materials.
After adopting such design, the invention has at least the following advantages:
1. by using the extraction step provided by the invention, the wear particles can be effectively extracted from the grease, a feasible experimental scheme is provided for the iron spectrum analysis of the grease, and a technical approach is provided for evaluating the wear state of grease lubrication equipment.
2. The straight tube part and the cavity part are integrally b-shaped, so that the wear particles can be effectively separated from the organic solvent containing soap base and lubricating oil when the grease is washed by the organic solvent, and meanwhile, the wear particles can be successfully taken out of the device after being diluted by tetrachloroethylene and pure lubricating oil.
3. The extraction device provided by the invention is simple in structure, convenient to use and low in cost.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
Fig. 1 is a schematic structural diagram of an apparatus for extracting wear particles from grease used in the present invention.
FIG. 2 is a schematic diagram of a process in which grease is flushed with an organic solvent.
Fig. 3 is a schematic view of the process by which wear particles are flushed out.
Description of reference numerals: 1-a straight tube portion; 2-a cavity portion; 3-abrasive particles; 4-an organic solvent; 5-tetrachloroethylene and pure lubricating oil.
Detailed Description
Referring to fig. 1, the present invention provides a device for extracting wear particles from grease, including a straight tube portion 1 and a cavity portion 2, wherein the cavity portion 2 is a hollow sphere, the straight tube portion 1 is a hollow round tube, the straight tube portion 1 and an outer wall of the cavity portion 2 are connected into a whole and communicated with each other, the straight tube portion 1 is vertically disposed above the cavity portion 2, and a part of the outer wall of the straight tube portion 1 is tangent to a part of the outer wall of the cavity portion 2, such that the straight tube portion 1 and the cavity portion 2 are integrally formed into a b-shaped bottle body with an open upper end and a closed lower end.
Preferably, the straight tube part 1 and the cavity part 2 are made of glass or other non-oil-soluble transparent materials.
The present invention is used for extracting wear particles by washing with grease, and then preparing ferrographic flakes, and since the grease contains soap base and lubricating oil, if the wear particles cannot be separated from the soap base and the lubricating oil, the soap base covers the wear particles, and the microscopic reflected light is blocked, which affects the analysis result.
Referring to fig. 2 and 3, the present invention further provides a method for extracting wear particles from used grease, which uses the above-mentioned device for extracting wear particles from used grease, and comprises the following steps:
1. adding a proper amount of lubricating grease into the cavity part 2, wherein the volume of the cavity part 2 is generally not more than one third of that of the spherical cavity part;
2. adding a proper amount of organic solvent 4 into the cavity part 2, wherein the organic solvent 4 is selected according to the type of the soap base and generally adopts petroleum ether, and the addition amount of the organic solvent 4 is proper and cannot be full so as to be beneficial to subsequent oscillation cleaning;
3. the outlet at the upper end of the straight pipe part 1 is plugged by a proper bottle plug, and the oscillating flushing is repeatedly carried out by adopting the postures of forward placement, inversion and the like, so that the flushing is more sufficient;
4. the invention is allowed to stand for a period of time to allow the abrasive particles 3 to settle and separate from the organic solution 4 (containing soap base and lubricating oil).
5. As shown in fig. 2, the present invention is slowly adjusted from the standing state to a position where the opening of the straight tube portion 1 is inclined downward and the straight tube portion 1 is positioned above the cavity portion 2, at which time, the abrasive grains 3 remain at the bottom of the cavity portion 2 and the organic solvent 4 in the upper layer can slowly flow out from the straight tube portion 1.
6. As shown in fig. 3, the present invention is slowly adjusted from a standing state by adding a proper amount of tetrachloroethylene and pure lubricating oil 5 until the opening of the straight tube portion 1 is inclined downward and the straight tube portion 1 is located at a position below the cavity portion 2, and at this time, the wear particles 3 are flushed out together with the tetrachloroethylene and the pure lubricating oil 5.
In order to achieve better flushing effect, the steps 2-5 can be repeatedly executed until the soap base and the lubricating oil in the lubricating grease are completely removed. After the wear particles have been successfully extracted from the used grease, the subsequent step of preparing the ferrographic flakes may be carried out, which is not described in detail herein, since the subsequent steps are specified in the SH/T0573-93 (2003) standard.
The invention extracts the wear particles from the lubricating grease, performs pretreatment for the subsequent preparation of ferrographic films, provides a feasible experimental scheme for ferrographic analysis of the lubricating grease, and provides a technical approach for evaluating the wear state of grease lubrication equipment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.
Claims (7)
1. A method for extracting wear particles in used lubricating grease is characterized by comprising the following extraction steps:
a. adding the lubricating grease into a bottle body;
b. adding an organic solvent;
c. blocking the bottle mouth with a bottle stopper and repeatedly vibrating the bottle body;
d. standing for a period of time to allow the abrasive particles to precipitate and separate from the organic solution;
e. slowly inclining the bottle mouth to enable abrasion particles to be left at the bottom of the bottle and pouring out the organic solvent;
f. tetrachloroethylene and neat lubricant were added and the wear particles were poured out with the tetrachloroethylene and neat lubricant.
2. The method for extracting wear particles from grease used in claim 1, wherein the bottle body comprises a straight tube portion and a cavity portion, the cavity portion is in the shape of a hollow sphere, the straight tube portion is a hollow round tube, the straight tube portion is connected with the outer wall of the cavity portion into a whole and is communicated with the inside, the straight tube portion is vertically arranged above the cavity portion, and part of the outer wall of the straight tube portion is tangent to part of the outer wall of the cavity portion, so that the straight tube portion and the cavity portion are integrally formed into a b-shaped bottle body with an open upper end and a closed lower end.
3. A method for extracting wear particles from a lubricating grease as claimed in claim 2, wherein the extraction steps e and f are performed as follows:
e. slowly adjusting the positions of the straight pipe part and the cavity part to enable the straight pipe part to be positioned below the upper cavity part and the opening to be inclined downwards, leaving the wear particles at the bottom of the cavity part and enabling the organic solvent to flow out;
f. adding tetrachloroethylene and pure lubricating oil, adjusting the positions of the straight pipe part and the cavity part again to ensure that the straight pipe part is arranged on the lower cavity part and the opening is inclined downwards, and pouring out the wear particles along with the tetrachloroethylene and the pure lubricating oil.
4. A method for extraction of wear particles in a used grease according to any one of claims 1-3, characterized in that the organic solvent in step b is capable of dissolving the soap base in the used grease.
5. A method of extracting wear particles in a grease composition according to claim 4, wherein the organic solvent is petroleum ether.
6. The utility model provides an in lubricating grease wear particle extraction element, its characterized in that, includes straight tube portion and cavity portion, the shape of cavity portion is hollow sphere, straight tube portion is hollow pipe, straight tube portion meets as an organic whole and inside intercommunication with cavity portion outer wall, straight tube portion vertically sets up and is located the top of cavity portion, and the partial outer wall of straight tube portion is tangent with the partial outer wall of cavity portion for straight tube portion and cavity portion wholly are upper end opening lower extreme confined b shape bottle.
7. An apparatus for extracting wear particles from a lubricating grease as claimed in claim 6, wherein the straight tube portion and the cavity portion are made of glass or other transparent material which is not oil-soluble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010361203.9A CN111420427A (en) | 2020-04-30 | 2020-04-30 | Method and device for extracting wear particles in used lubricating grease |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010361203.9A CN111420427A (en) | 2020-04-30 | 2020-04-30 | Method and device for extracting wear particles in used lubricating grease |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111420427A true CN111420427A (en) | 2020-07-17 |
Family
ID=71554889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010361203.9A Pending CN111420427A (en) | 2020-04-30 | 2020-04-30 | Method and device for extracting wear particles in used lubricating grease |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111420427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113083553A (en) * | 2021-03-31 | 2021-07-09 | 神华神东煤炭集团有限责任公司 | Preparation device and preparation method of ferrographic flexible music sheet based on spraying method |
-
2020
- 2020-04-30 CN CN202010361203.9A patent/CN111420427A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113083553A (en) * | 2021-03-31 | 2021-07-09 | 神华神东煤炭集团有限责任公司 | Preparation device and preparation method of ferrographic flexible music sheet based on spraying method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205079992U (en) | Liquid feeding device of centrifugal liquid base cell film -making | |
| CN111420427A (en) | Method and device for extracting wear particles in used lubricating grease | |
| Gao et al. | One step to detect the latent fingermarks with gold nanoparticles | |
| CN102660870A (en) | Preparation method of oil-water separation fabric | |
| CN105758677A (en) | Stratified sampling device for liquid and method for performing stratified sampling on liquid | |
| CN212395946U (en) | Device for extracting wear particles in used lubricating grease | |
| CN209132046U (en) | A kind of water sampling unit for environmentally friendly water quality detection | |
| CN206240115U (en) | A kind of microemulsion extraction equipment | |
| CN110530675B (en) | Sleeve type large crude oil storage tank bottom sediment in-situ sampling device and method | |
| CN211274666U (en) | Reation kettle is used in waterproofing agent processing | |
| CN208320843U (en) | A kind of centrifuge tube making cell block | |
| CN207413457U (en) | The quick recycling square box of microscope mirror oil after the full-automatic sweeping blade instrument sweeping blade of chromosome | |
| CN208560441U (en) | A kind of quick headstock gear of diesel engine oil sample tap | |
| CN208621368U (en) | Environment-friendly liquid chemicals sampler | |
| CN208206803U (en) | A kind of surface-enhanced Raman detection kit | |
| CN209372696U (en) | A kind of Atomic Fluorescence Spectrometer waste collecting device | |
| CN206240849U (en) | Chinese medicine cleaning device | |
| CN219216241U (en) | Waste food collecting device | |
| CN110836840A (en) | Novel cover for thistle tube type iron spectrometer solvent tank | |
| CN215573923U (en) | Depth-adjustable sampling device for liquid food detection | |
| Wang et al. | Nasal Cavity Inspired Micro‐Nanostructured Cone Array Tube for Oil Recovery in Wastewater | |
| CN210409723U (en) | Oil-dust separating device | |
| CN108593352A (en) | Environment-friendly liquid chemicals sampler | |
| CN205642900U (en) | Shallow water water sampling ware | |
| CN2776535Y (en) | Fast joint structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |