A method for determining mechanical impurities in lubricating oil and a direct-drip fat extractor

Abstract

The invention discloses a method for determining mechanical impurities in lubricating oil, comprising the following steps: weighing a lubricating oil sample in advance and placing the sample in filter paper that has been washed to a constant weight with petroleum ether; heating and reflux washing with a direct-drop fat extractor; repeatedly washing until the weight is constant and then taking out the filter paper; and measuring the weight difference of the filter paper before and after washing. The determination method of the invention adopts low-toxic petroleum ether as a solvent, which can effectively replace toluene in the original determination method, reduce the harm of the solvent to the human body, and reduce the cost of the solvent in procurement and storage management. The determination method of the invention uses a direct-drop fat extractor to condense and reflux and wash the filter paper, which can effectively reuse the solvent, reduce manual operation, reduce the cost of use, and is easy to promote and apply in production.

Description

Technical Field

[0001] The invention relates to the technical field of petrochemical industry, in particular to a method for measuring mechanical impurities in lubricating oil and a direct-drip type fat extractor. Background Art

[0002] Mechanical impurities refer to sediments or colloid suspensions in lubricating oil that are insoluble in solvents such as gasoline, ethanol and benzene, such as mud, dust, iron filings, fibers and certain insoluble salts. Mechanical impurities in lubricating oil will destroy the oil film, increase wear, clog the oil filter, and promote the formation of carbon deposits and ash. Therefore, mechanical impurities are a key indicator for measuring lubricating oil and need to be measured.

[0003] According to the national standard GB / T 511-2010 "Method for determination of mechanical impurities in petroleum, petroleum products and additives", the determination of mechanical impurities requires continuous addition of solvent for flushing and distillation to constant weight, which consumes a lot of manpower and solvents.

[0004] Toluene is used as solvent for the determination of mechanical impurities. Toluene belongs to the category of precursor-3, which is irritating to the skin and mucous membranes, and has an anesthetic effect on the central nervous system. Long-term use will cause certain harm to the human body. According to the documents "Regulations on the Safety Management of Hazardous Chemicals" and "Regulations on the Management of Precursor Chemicals", this product is regulated by the public security department, and the use of this product will increase the procurement and management costs of the laboratory. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the problems existing in the above-mentioned existing methods for determining mechanical impurities in lubricating oil and the direct-drip fat extractor, the present invention is proposed.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for determining mechanical impurities in lubricating oil, comprising the following steps:

[0008] Weigh the lubricating oil sample in advance and place it in filter paper that has been washed with petroleum ether to a constant weight;

[0009] Use a direct-drip fat extractor for heated reflux washing;

[0010] Wash repeatedly until constant weight is reached and then remove the filter paper;

[0011] Measure the difference in filter paper weight before and after washing.

[0012] The method adopts a straight-drop fat extractor, which includes: a condensation component, including a bracket, an outer tube arranged on the bracket, a condensation pipeline arranged inside the outer tube, and a cooling tube arranged on the outer tube; an extraction component, including an extraction tube connected to the lower end of the condensation pipeline, a reflux funnel arranged in the extraction tube, and a distillation flask arranged at the lower end of the extraction tube; and a removal component, which is arranged on the bracket; as a preferred embodiment of the straight-drop fat extractor of the present invention, wherein: the removal component includes a frame rod arranged on the bracket, a driving wheel rotatably connected to the frame rod, and a driving rod connected to the driving wheel, the front end of the driving rod is rotatably connected to a grabbing rod, and the end of the grabbing rod is provided with an adhesive member,

[0013] The adhesive member comprises a grab block arranged at the end of the grab rod and a suction cup arranged on the grab block.

[0014] As a preferred embodiment of the direct drop fat extractor of the present invention, a driving wheel group is arranged on the driving wheel, two driving rods are arranged, the driving wheel group includes a first wheel and a second wheel eccentrically arranged on the first wheel, the first wheel is connected to the center of the driving wheel, the two driving rods are arranged on the first wheel and the second wheel respectively, the ends of the two driving rods are also arranged with driving wheel groups, and the grabbing rod is coaxially arranged with the second wheel located at the end of the driving rod.

[0015] As a preferred embodiment of the method for determining mechanical impurities in lubricating oil according to the present invention, the above also includes the following steps: washing the folded filter paper with a direct drop fat extractor for one hour in advance, weighing it after drying, until the difference between two consecutive weighings does not exceed 0.0004g, that is, constant weight, and recording the total mass of the constant weight filter paper and the weighing bottle, marked as constant weight 1.

[0016] As a preferred embodiment of the method for determining mechanical impurities in lubricating oil described in the present invention, the above also includes the following steps: shaking the lubricating oil sample in the glass bottle for 5 minutes, mixing evenly, weighing about 20g of the sample, accurate to 0.2g, and placing it in filter paper.

[0017] As a preferred embodiment of the method for determining mechanical impurities in lubricating oil described in the present invention, the above also includes the following steps: placing a glass funnel and filter paper into a condensation receiver, connecting the condenser and the condensation receiver, heating them on an electric furnace, washing them for one hour and then cooling them; drying the cooled filter paper at 105-110°C for one hour, and weighing them with an analytical balance with an accuracy of 0.0002g.

[0018] As a preferred embodiment of the method for determining mechanical impurities in lubricating oil of the present invention, the method further comprises the following steps:

[0019] Continue to wash the filter paper with the straight-drop fat extractor for half an hour, dry it, and weigh it. Wash it until the difference between two consecutive weighings does not exceed 0.0004 g, which is constant weight. Record the total mass of the constant weight filter paper and the weighing bottle, called constant weight 2, and calculate the mass difference between constant weight 1 and constant weight 2.

[0020] The present invention also provides the following technical solutions: a straight-drop fat extractor, comprising: a condensation component, including a bracket, an outer tube arranged on the bracket, a condensation pipeline arranged inside the outer tube, and a cooling tube arranged on the outer tube; an extraction component, including an extraction tube connected to the lower end of the condensation pipeline, a reflux funnel arranged in the extraction tube, and a distillation flask arranged at the lower end of the extraction tube; and a removal component, wherein the removal component is arranged on the bracket; as a preferred solution of the straight-drop fat extractor of the present invention, wherein: the removal component comprises a frame rod arranged on the bracket, a driving wheel rotatably connected to the frame rod, and a driving rod connected to the driving wheel, the front end of the driving rod is rotatably connected to a grabbing rod, and the end of the grabbing rod is provided with an adhesive member,

[0021] The adhesive member comprises a grab block arranged at the end of the grab rod and a suction cup arranged on the grab block.

[0022] As a preferred embodiment of the direct drop fat extractor of the present invention, a driving wheel group is arranged on the driving wheel, two driving rods are arranged, the driving wheel group includes a first wheel and a second wheel eccentrically arranged on the first wheel, the first wheel is connected to the center of the driving wheel, the two driving rods are arranged on the first wheel and the second wheel respectively, the ends of the two driving rods are also arranged with driving wheel groups, and the grabbing rod is coaxially arranged with the second wheel located at the end of the driving rod.

[0023] As a preferred embodiment of the straight drop type fat extractor of the present invention, a placement groove is provided at the end of the grabbing rod, the grabbing rod is rotatably connected in the placement groove, and a flat plate is provided on the side of the grabbing block away from the suction cup.

[0024] As a preferred solution of the direct-drop fat extractor of the present invention, a grabbing plate is provided at the lower end of the second wheel, and the grabbing plate is connected to the outer wall of the reflux funnel.

[0025] The beneficial effects of the present invention are as follows: the determination method of the present invention adopts low-toxic petroleum ether as a solvent, which can effectively replace the toluene in the original determination method, reduce the harm of the solvent to the human body, and reduce the cost of the solvent during procurement and storage management; the determination method of the present invention uses a direct-drop fat extractor to perform condensation reflux flushing of filter paper, which can effectively reuse the solvent, reduce manual operation, reduce the cost of use, and is easy to promote and apply in production. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0027] Figure 1 It is a schematic diagram of the overall structure of the direct drop type fat extractor of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the removal component of the direct drop fat extractor of the present invention.

[0029] Figure 3 The figure is a schematic diagram of the internal structure of the placement tank of the direct drop type fat extractor of the present invention.

[0030] Figure 4 The figure is a schematic diagram of the structure of the driving wheel assembly of the direct-drip fat extractor of the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] Example 1

[0036] The first embodiment of the present invention provides a method for determining mechanical impurities in lubricating oil, comprising the following steps:

[0037] 1. Preparation

[0038] (1) Fold the filter paper in half twice, determine the center position, align the stainless steel tube or glass tube with the center of the filter paper, and process the filter paper into a cylindrical shape suitable for the size of the weighing bottle;

[0039] (2) Place the filter paper in the condensation receiver, add petroleum ether and glass beads (to prevent boiling) to a glass flask, about one-third of the volume, connect the condenser and the condensation receiver, place it on an electric stove to heat, observe the cooling and dripping of petroleum ether, adjust the voltage and current to prevent the petroleum ether from heating too fast and overflowing due to untimely cooling, wash for one hour and then cool;

[0040] (3) Take out the filter paper, place it in a weighing bottle, and dry it in an oven at 105-110°C for one hour;

[0041] (4) Take out and place in a desiccator, accurately time for 5 minutes and weigh using an analytical balance to an accuracy of 0.0002 g;

[0042] (5) Continue washing with the direct-drip fat extractor for half an hour, drying, and weighing until the difference between two consecutive weighings does not exceed 0.0004 g, which is a constant weight. Record the total mass of the filter paper and the weighing bottle at the constant weight.

[0043] 2. Test steps

[0044] (1) Shake the lubricating oil sample in a glass bottle (not exceeding three-quarters of the bottle volume) for 5 minutes to mix evenly;

[0045] (2) Place the filter paper after constant weight in a glass funnel, place it in a beaker, and weigh about 20 g of sample in the filter paper using a pharmaceutical balance, accurate to 0.2 g;

[0046] (3) Place the glass funnel and filter paper into the condensation receiver, connect the condensation tube and the condensation receiver, heat it on an electric stove, wash it for one hour, and cool it down;

[0047] (4) Take out the filter paper, place it in a weighing bottle, and dry it in an oven at 105-110°C for one hour;

[0048] (5) Take out and place in a desiccator, accurately time for 5 minutes and weigh using an analytical balance to an accuracy of 0.0002 g;

[0049] (6) Remove the filter paper from the glass funnel and continue to wash the filter paper with a direct-drip fat extractor for half an hour, dry it, and weigh it. Wash it until the difference between two consecutive weighings does not exceed 0.0004 g, which is a constant weight. Record the total mass of the filter paper and the weighing bottle at the constant weight.

[0050] 3. Calculation of analysis results

[0051] The mechanical impurity content X of the sample is calculated according to the following formula:

[0052]

[0053] Where: m1 is the mass of the filter paper and weighing bottle with mechanical impurities, in g;

[0054] m2——the mass of filter paper and weighing bottle, in g;

[0055] m——mass of the sample, in g;

[0056] 4. Check the analysis results

[0057] Since there is no standard sample for the determination of mechanical impurities in lubricating oil, the method of the present invention is used to carry out repeatability tests on 4 batches of lubricating oil respectively. The repeatability test is verified according to the above steps, and the repeatability requirements of GB / T511-2010 are met. The test data are shown in Table 1:

[0058]

[0059]

[0060] Table 1 Repeatability test of mechanical impurities in lubricating oil Note: Repeatability refers to the difference between two consecutive test results of the same sample measured by the same operator in the same laboratory using the same instrument. It should not exceed the value specified in Table 2.

[0061] Mechanical impurities (mass fraction) / % Repeatability (mass fraction) / % ≤0.01 0.0025 >0.01～0.1 0.005 >0.1～1.0 0.01 >1.0 0.10

[0062] Table 2 Repeatability specification value table

[0063] The determination method of the present invention adopts low-toxic petroleum ether as a solvent, which can effectively replace the toluene in the original determination method, reduce the harm of the solvent to the human body, and reduce the cost of the solvent in procurement and storage management;

[0064] The determination method of the invention uses a direct-drop fat extractor to perform condensation reflux washing of filter paper, can effectively reuse solvents, reduce manual operations, lower the cost of use, and is easy to promote and apply in production.

[0065] Example 2

[0066] Reference Figure 1-4 , which is the second embodiment of the present invention, a straight drop type fat extractor, comprising:

[0067] Condensation assembly, in this embodiment, the condensation assembly includes a bracket 100, the bracket 100 serves as a supporting body,

[0068] A base is provided at the lower end, and a number of rods extend upward from the base as support rods. At the same time, an outer tube 101 is provided on the bracket 100. The outer tube 101 is cylindrical as a whole, and connecting tubes extend from both the upper and lower ends. The diameter of the connecting tube is much smaller than the diameter of the center end of the outer tube 101, and holes are opened from the upper and lower ends of the outer tube 101. A condensation pipeline 102 is provided inside the outer tube 101. The upper end of the condensation pipeline 102 extends from the upper end hole of the outer tube 101, and the lower end extends from the lower end hole of the outer tube 101. A cooling pipe 103 is also connected to the outer tube 101, and the cooling pipe 103 is used to inject liquid into the inner part of the outer tube 101.

[0069] Furthermore, the present invention also includes an extraction component 200. In this embodiment, the extraction component 200 includes an extraction tube 201 connected to the lower end of the condensation pipeline 102. A reflux funnel 202 is arranged in the extraction tube 201. The reflux funnel 202 can be removed. A distillation flask 203 is also arranged at the lower end of the extraction tube 201.

[0070] Furthermore, the present invention also includes a removal component 300. In this embodiment, the removal component 300 is arranged on the bracket 100. The removal component 300 includes a frame rod 301 arranged on the bracket 100, and a driving wheel 302 is rotatably connected to the frame rod 301. A driving wheel 302 group is arranged on the driving wheel 302. A driving rod 303 is connected to the driving wheel 302 through the driving wheel 302 group. A grabbing rod 304 is rotatably connected to the front end of the driving rod 303. The grabbing rod 304 is bent, and an adhesive member 305 is arranged at the end of the grabbing rod 304.

[0071] Furthermore, the adhesive member 305 includes a grabbing block 305a arranged at the end of the grabbing rod 304, the grabbing block 305a is in the shape of a cylindrical tube, and the cylindrical length direction of the grabbing block 305a is perpendicular to the length direction of the grabbing rod 304, so that when the grabbing rod 304 rotates, the movement trajectory of the grabbing block 305a is a sector-shaped circle, and a suction cup 305b is arranged on the grabbing block 305a, and the suction cup 305b is used to grab the filter paper.

[0072] Furthermore, in this embodiment, two driving rods 303 are provided, and the two driving rods 303 are arranged in parallel, and two driving wheel groups 302 are also provided, and the driving wheel group 302 includes a first wheel 401 and a second wheel 402 eccentrically arranged to the first wheel 401, and a rotating shaft extends upward from the driving wheel 302, and the rotating shaft is eccentrically arranged to the first wheel 401 and passes through the second wheel 402, so that the rotation of the driving wheel 302 causes the first wheel 401 and the second wheel 402 to rotate eccentrically, and the two driving wheels 302 are arranged to rotate eccentrically. The movable rod 303 is respectively arranged on the first wheel 401 and the second wheel 402, and a driving wheel 302 group is also arranged at the ends of the two driving rods 303. The setting method is consistent with the setting of the rear end driving wheel 302 group, and the grabbing rod 304 is coaxially arranged with the second wheel 402 located at the end of the driving rod 303, and a placement groove 403 is opened at the end of the grabbing rod 304, and the grabbing block 305a is rotatably connected in the placement groove 403, and a flat plate 404 is arranged on the side of the grabbing block 305a away from the suction cup 305b.

[0073] Furthermore, a grab plate 405 is provided at the lower end of the second wheel 402, and the grab plate 405 is connected to the outer wall of the reflux funnel 202. The rotation of the second wheel 402 can drive the rotation of the reflux funnel 202, so that the liquid can be better attached to the filter paper through the centrifugal force of the rotation.

[0074] Operation process: When the driving wheel 302 rotates, the first wheel 401 and the second wheel 402 can rotate eccentrically to make the grab block 305a rotate, and the filter paper is adsorbed by the suction cup 305b on the grab rod 304 and placed in the funnel, and then the filter paper is completely fitted through the flat plate 404.

[0075] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0076] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0077] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for determining mechanical impurities in lubricating oil, characterized in that: The following steps are included: Weigh the lubricating oil sample in advance and place it in filter paper that has been washed with petroleum ether to a constant weight; Use a direct-drip fat extractor for heated reflux washing; Wash repeatedly until constant weight is reached and then remove the filter paper; Measure the weight difference of the filter paper before and after washing; The method adopts a straight-drop fat extractor, which comprises: a condensation assembly, which comprises a bracket (100), an outer tube (101) arranged on the bracket (100), a condensation pipeline (102) arranged inside the outer tube (101), and a cooling tube (103) arranged on the outer tube (101); An extraction assembly (200) comprises an extraction tube (201) connected to the lower end of the condensation pipeline (102), a reflux funnel (202) arranged in the extraction tube (201), and a distillation flask (203) arranged at the lower end of the extraction tube (201); and, A taking-out assembly (300), wherein the taking-out assembly (300) is arranged on the bracket (100); The taking-out assembly (300) comprises a frame rod (301) arranged on the bracket (100), a driving wheel (302) rotatably connected to the frame rod (301), and a driving rod (303) connected to the driving wheel (302); a grabbing rod (304) is rotatably connected to the front end of the driving rod (303); an adhesive member (305) is arranged at the end of the grabbing rod (304); the adhesive member (305) comprises a grabbing block (305a) arranged at the end of the grabbing rod (304) and a suction cup (305b) arranged on the grabbing block (305a); A driving wheel (302) group is arranged on the driving wheel (302), two driving rods (303) are arranged, the driving wheel (302) group comprises a first wheel (401) and a second wheel (402) eccentrically arranged to the first wheel (401), the first wheel (401) is connected to the center of the driving wheel (302), the two driving rods (303) are arranged on the first wheel (401) and the second wheel (402) respectively, the ends of the two driving rods (303) are also arranged with a driving wheel (302) group, and the grabbing rod (304) is coaxially arranged with the second wheel (402) located at the end of the driving rod (303).

2. The method for determining mechanical impurities in lubricating oil according to claim 1, characterized in that: Also includes, Wash the folded filter paper with a straight drop fat extractor for one hour in advance, dry it and weigh it until the difference between two consecutive weighings does not exceed 0.0004g, which is a constant weight. Record the total mass of the constant weight filter paper and weighing bottle and mark it as constant weight 1; Shake the lubricating oil sample in the glass bottle for 5 minutes. After mixing evenly, weigh 20g of the sample to the nearest 0.2g and place it on filter paper. Put the glass funnel and filter paper into the condensation receiver, connect the condensation tube and the condensation receiver, heat it on the electric stove, wash it for one hour and cool it down; After drying the cooled filter paper at 105-110°C for one hour, weigh it with an analytical balance to an accuracy of 0.0002 g; Continue to wash the filter paper with the straight-drop fat extractor for half an hour, dry it, and weigh it. Wash it until the difference between two consecutive weighings does not exceed 0.0004g, which is constant weight. Record the total mass of the constant weight filter paper and weighing bottle, called constant weight 2, and calculate the mass difference between constant weight 1 and constant weight 2.

3. A straight drop type fat extractor, characterized in that: Comprising: a condensation assembly, comprising a support (100), an outer tube (101) arranged on the support (100), a condensation pipeline (102) arranged inside the outer tube (101), and a cooling tube (103) arranged on the outer tube (101); An extraction assembly (200) comprises an extraction tube (201) connected to the lower end of the condensation pipeline (102), a reflux funnel (202) arranged in the extraction tube (201), and a distillation flask (203) arranged at the lower end of the extraction tube (201); and, A taking-out assembly (300), wherein the taking-out assembly (300) is arranged on the bracket (100); The taking-out assembly (300) comprises a frame rod (301) arranged on the bracket (100), a driving wheel (302) rotatably connected to the frame rod (301), and a driving rod (303) connected to the driving wheel (302); a grabbing rod (304) is rotatably connected to the front end of the driving rod (303); an adhesive member (305) is arranged at the end of the grabbing rod (304); the adhesive member (305) comprises a grabbing block (305a) arranged at the end of the grabbing rod (304) and a suction cup (305b) arranged on the grabbing block (305a); A driving wheel (302) group is arranged on the driving wheel (302), two driving rods (303) are arranged, the driving wheel (302) group comprises a first wheel (401) and a second wheel (402) eccentrically arranged to the first wheel (401), the first wheel (401) is connected to the center of the driving wheel (302), the two driving rods (303) are arranged on the first wheel (401) and the second wheel (402) respectively, the ends of the two driving rods (303) are also arranged with a driving wheel (302) group, and the grabbing rod (304) is coaxially arranged with the second wheel (402) located at the end of the driving rod (303).

4. The direct drop fat extractor according to claim 3, characterized in that: The end of the grabbing rod (304) is provided with a placement groove (403), the grabbing block (305a) is rotatably connected in the placement groove (403), and a flat plate (404) is provided on the side of the grabbing block (305a) away from the suction cup (305b).

5. The direct drop type fat extractor as claimed in claim 4, characterized in that: A grabbing plate (405) is provided at the lower end of the second wheel (402), and the grabbing plate (405) is connected to the outer wall of the reflux funnel (202).

Images