A grease detection mold

Abstract

The present invention discloses a grease detection mold, which relates to the technical field of grease detection and aims to solve the problem in the prior art that it is easy to make mistakes in operating a grease cup with a small size, resulting in a large deviation in the thickness of the grease film in the grease cup or damage to the grease cup, affecting the detection result. The key points of its technical solution include a grease cup, the grease cup includes a bowl-shaped bowl part and a pipe part located directly below the bowl part and communicating with the bowl part in the vertical direction. A fitting is arranged in the grease cup. The fitting includes a partition cone in the shape of a funnel. The partition cone is as high as the bowl part. The circumferences of the top and bottom of the partition cone are respectively attached to the circumferences of the top and bottom of the bowl part. Through holes are evenly distributed on the conical surface of the partition cone. A sleeve collinear with its central axis is arranged on the top wall of the partition cone, and the partition cone is located inside the sleeve. The present invention achieves the purpose of providing a detection mold that is convenient to operate, can form a repeatable grease film, and improves the accuracy of dropping point detection.

Description

Technical Field

[0001] The present invention relates to the technical field of grease detection, and particularly to a grease detection mold. Background Art

[0002] The dropping point of grease refers to the temperature at which the grease reaches a certain fluidity under specified test conditions. This temperature is also called the dropping point temperature of the grease and is an important indicator characterizing the quality of the grease.

[0003] The measurement method for the dropping point of grease is carried out in accordance with the national standard of the People's Republic of China GB4929-85 "Determination Method for Dropping Point of Grease". Refer to Figure 1 , the instruments used in this measurement method include a grease cup 1 made of chrome-plated brass for holding the sample to be tested, a test tube 4, a thermometer 41, and a cork 42. There are three grooves 43 on the circumferential side wall of the test tube 4, evenly distributed along the circumferential direction of the test tube 4, for supporting the grease cup 1. The grease cup 1 is bowl-shaped with openings at both the top and bottom. The sample is pressed into the grease cup 1 from the large opening until it is full, and the excess sample is scraped off with a spatula. Refer to Figure 2 , hold the grease cup 1 at the vertical position of the small hole at the bottom of the grease cup 1, insert and pass through a polished metal rod 44 downward, and press the metal rod 44 against the grease cup 1 in a way that it contacts the upper and lower circumferences of the grease cup 1. Keep this contact and rotate the grease cup 1 to make it move downward in a spiral shape. When the grease cup 1 finally slides out of the end of the metal rod 44, a smooth grease film with a repeatable thickness should be left on the inner side of the grease cup 1. Put the cork 42 on the thermometer 41, place the grease cup 1 and the thermometer 41 into the test tube 4, and hang the test tube 4 in an oil bath and stir the oil bath. When the temperature gradually rises, the sample melts, and when the first drop of fluid drips from the grease cup 1, record the temperatures shown by the two thermometers 41 in the test tube 4 and in the oil bath.

[0004] The above existing technical solutions have the following defects: the size of the grease cup 1 is small. When an operator manually rotates the metal rod 44 in a spiral shape inside the grease cup 1, it is impossible to ensure that the metal rod 44 must fit the circumference of the grease cup 1, and it is difficult to ensure that the thickness of the grease film in the grease cup 1 is repeatable. At the same time, at the moment when the grease cup 1 slides out of the end of the metal rod 44, the end of the metal rod 44 is extremely likely to pierce the grease film and cause the grease film to be damaged, affecting the dropping point test result, and this problem needs to be solved. Summary of the Invention

[0005] The purpose of the present invention is to provide a grease detection mold, which has the effects of convenient operation, forming a repeatable grease film, and improving the accuracy of dropping point detection.

[0006] The above invention purpose of the present invention is achieved through the following technical solutions:

[0007] A grease detection mold includes a grease cup, which includes a bowl portion in a bowl shape and a tube portion located directly below the bowl portion and vertically connected to the bowl portion. A matching piece is arranged in the grease cup, and the matching piece includes a funnel-shaped dividing cone. The dividing cone is at the same height as the bowl portion, and the top and bottom circumferences of the dividing cone are respectively fitted with the top and bottom circumferences of the bowl portion, and the conical surface of the dividing cone is evenly distributed with perforations; a sleeve is arranged on the top wall of the dividing cone and is colinear with its central axis, and the dividing cone is located in the sleeve.

[0008] The present invention is further configured as follows: a circular ring-shaped evacuation portion is provided between the separating cone and the top of the sleeve, the top wall of the fat cup abuts against the evacuation portion, the inner circumferential edge of the top wall of the fat cup abuts against the separating cone, and the outer circumferential edge of the top wall of the fat cup abuts against the sleeve.

[0009] The present invention is further configured such that the circumferential edge of the perforation smoothly transitions from the inner circumferential side wall to the outer circumferential side wall of the separating cone.

[0010] The present invention is further configured as follows: the partition cone is integrally provided with a partition tube body, and the outer circumferential side wall of the partition tube body is in contact with the tube portion.

[0011] The present invention is further configured as follows: an abutment rod abutting against the dividing cone is provided on the sleeve, and the abutment rod is threadedly connected to the sleeve.

[0012] The present invention is further configured as follows: a rubber pad is provided at one end of the abutment rod abutting against the partition cone, and an operating portion convenient for hand-holding is provided at one end of the abutment rod away from the partition cone.

[0013] The present invention is further configured such that: the sleeve is made of a transparent or translucent material.

[0014] The present invention is further configured as follows: a metal tube is embedded in the sleeve, and a thread matching with the thread of the abutment rod is arranged on the inner side wall of the metal tube.

[0015] In summary, the beneficial technical effects of the present invention are:

[0016] 1. Through the arrangement of the matching parts, the matching parts include a separation cone, a perforation and a sleeve. The matching parts are placed in the grease cup. After filling with grease, the grease cup is stirred spirally by a metal rod, so that the grease in the separation cone adheres to the metal rod and separates from the grease cup. A grease film of a certain thickness is formed between the separation cone and the grease cup. At the same time, the metal rod contacts the inner wall of the separation cone, which can prevent the metal rod from damaging the grease film, thereby achieving repeatable thickness and integrity of the grease film.

[0017] 2. The setting of the yielding part allows the top side wall of the sleeve to contact the fat cup more fully. When the fitting is taken out of the fat cup, the sleeve always abuts against the fat cup, which limits the movement of the fitting, thereby preventing the fitting from damaging the fat membrane.

[0018] 3. Through the arrangement of the abutment rod, the rubber pad and the operating part, the relative position between the matching part and the grease cup is made more stable, thereby achieving the effect of convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the assembly of a grease dropping point detection instrument of the background technology of the present invention;

[0020] Figure 2 It is a schematic diagram of grease cup processing for grease dropping point detection in the background technology of the present invention;

[0021] Figure 3 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0022] Figure 4 is a schematic structural diagram of a matching piece according to an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 Enlarged view of part A.

[0024] In the figure, 1, fat cup; 11, bowl; 12, tube; 2, partition cone; 21, perforation; 22, sleeve; 23, give way; 24, abutment rod; 25, rubber pad; 26, operating part; 27, metal tube; 3, partition tube body; 4, test tube; 41, thermometer; 42, cork; 43, groove; 44, metal rod. DETAILED DESCRIPTION

[0025] Reference Figure 3 The present invention discloses a grease detection mold, including a grease cup 1, wherein the grease cup 1 includes a bowl portion 11 in a bowl shape and a tube portion 12 located directly below the bowl portion 11 and vertically connected to the bowl portion 11, and the central axes of the bowl portion 11 and the tube portion 12 are collinear. The grease cup 1 is made of chrome-plated brass and has the characteristics of wear resistance and corrosion resistance. A matching piece is arranged in the grease cup 1, and the matching piece cooperates with the metal rod 44 to form a grease film in the grease cup 1.

[0026] Reference Figure 3 and Figure 4The matching parts include a separating cone 2, which is in the shape of a funnel that is wide at the top and narrow at the bottom, and the separating cone 2 is opened at the top and bottom. The separating cone 2 is at the same height as the bowl portion 11 of the fat cup 1 and the central axis is colinear. The top and bottom circumferences of the separating cone 2 are respectively fitted with the top and bottom circumferences of the bowl portion 11, and perforations 21 are evenly distributed on the conical surface of the separating cone 2. A sleeve 22 that is colinear with its central axis is provided on the top wall of the separating cone 2, and the separating cone 2 is located in the sleeve 22. A separating tube body 3 is integrally provided at the bottom of the separating cone 2, and the outer circumferential side wall of the separating tube body 3 is fitted with the tube portion 12. In this embodiment, the separating cone 2 can be made of plastic or glass with a smooth surface.

[0027] Reference Figure 3 and Figure 4 A circular ring-shaped clearance portion 23 is provided between the partition cone 2 and the top of the sleeve 22, the inner side wall of the clearance portion 23 is integrally connected to the partition cone 2, and the outer side wall is integrally connected to the sleeve 22. The clearance portion 23 serves as a transition between the partition cone 2 and the sleeve 22, and on the other hand, leaves a space between the partition cone 2 and the sleeve 22 for the fat cup 1 to be inserted. The top wall of the fat cup 1 abuts against the clearance portion 23, the inner circumferential edge of the top wall of the fat cup 1 abuts against the partition cone 2, and the outer circumferential edge of the top wall of the fat cup 1 abuts against the sleeve 22.

[0028] Before injecting grease into the fat cup 1, the fitting is assembled with the fat cup 1, that is, the partition cone 2 is located inside the fat cup 1, the sleeve 22 is located outside the fat cup 1, the top wall of the fat cup 1 is against the easing portion 23, and the partition tube body 3 is fitted with the tube portion 12. Then the sample is pressed into the fat cup 1 from the wide mouth until it is filled with grease, and the excess sample is scraped off with a scraper. Then the metal rod 44 is used to penetrate the fat cup 1 from the bottom up and down, and the metal rod 44 is stirred in a manner that fits the inner circumferential side wall of the partition cone 2. The fat cup 1 is rotated to maintain such contact, so that it moves downward in a spiral shape, so that the grease in the partition cone 2 adheres to the metal rod 44 and is cleaned out of the fat cup 1. Finally, the fitting is taken out. Since the sleeve 22 and the top outer wall of the fat cup 1 are always in a fit state, the fitting moves vertically strictly along the central axis of the fat cup 1 until it is separated from the fat cup 1, effectively preventing the partition cone 2 from damaging the lipid membrane. At this time, a lipid film of uniform thickness is formed in the space between the lipid cup 1 and the separation cone 2, and the lipid film thickness is fixed and repeatable. At the same time, when the metal rod 44 is attached to the separation cone 2 and stirred, no matter how the lipid cup 1 is moved, the metal rod 44 will not damage the lipid film, thereby ensuring the integrity of the lipid film and improving the accuracy of the test.

[0029] Reference Figure 5, the circumferential edge of the perforation 21 smoothly transitions from the inner circumferential side wall of the separating cone 2 to the outer circumferential side wall, that is, the cross-section of the perforation 21 is an isosceles trapezoid with the large mouth facing the inner circumferential side wall. Before removing the mating parts, rotate the mating parts circumferentially along the grease cup 1, and the grease located in the perforation 21 enters the separating cone 2 through the smooth transition surface, so that the grease film remaining in the grease cup 1 can be smooth. In this embodiment, the thickness of the separating cone 2 should be as small as possible.

[0030] Refer to Figure 4 , a contact rod 24 that abuts against the separating cone 2 is provided on the sleeve 22. The contact rod 24 is arranged radially along the sleeve 22, and the contact rod 24 is threadedly connected to the sleeve 22. A rubber pad 25 is provided at one end of the contact rod 24 that abuts against the separating cone 2 to prevent the contact rod 24 from directly contacting the separating cone 2 and causing serious wear. An operation part 26 is provided at the end of the contact rod 24 away from the separating cone 2 to facilitate the operator to rotate the contact rod 24. In this embodiment, the operation part 26 is in a circular ring shape and is integrally formed with the contact rod 24. The contact rod 24 is preferably made of metal.

[0031] The sleeve 22 is made of a transparent or semi-transparent material. In this embodiment, the sleeve 22 is made of plastic material to facilitate observing the abutting situation between the contact rod 24 and the separating cone 2. A metal tube 27 is embedded in the sleeve 22, and the axis of the metal tube 27 is perpendicular to the axis of the sleeve 22. Threads that are threadedly engaged with the contact rod 24 are provided on the inner side wall of the metal tube 27. As an optimization, the end of the metal tube 27 close to the central axis of the sleeve 22 is not provided with threads and has a smooth circumferential side wall to reduce the wear of the rubber pad 25 by the threads, thereby extending the service life.

[0032] The implementation principle of the above embodiment is as follows: Place the mating parts in the grease cup 1, rotate the contact rod 24 to make the rubber pad 25 abut against the side wall of the grease cup 1 to limit the relative position between the mating parts and the grease cup 1. After filling the grease cup 1 with grease, then use the metal rod 44 to stir the grease cup 1 in a spiral shape, so that the grease in the separating cone 2 adheres to the metal rod 44 and separates from the grease cup 1. A grease film with a certain thickness is formed between the separating cone 2 and the grease cup 1. At the same time, the metal rod 44 contacts the inner side wall of the separating cone 2, which can prevent the metal rod 44 from damaging the grease film, thereby realizing the repeatability and integrity of the grease film thickness.

[0033] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore: All equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A lubricating grease detection mold, comprising a grease cup (1), wherein the grease cup (1) comprises a bowl portion (11) in a bowl shape and a tube portion (12) located directly below the bowl portion (11) and vertically connected to the bowl portion (11), Features: A matching piece is arranged inside the fat cup (1), and the matching piece includes a funnel-shaped dividing cone (2). The dividing cone (2) is at the same height as the bowl portion (11), and the top and bottom circumferences of the dividing cone (2) are respectively fitted with the top and bottom circumferences of the bowl portion (11), and the conical surface of the dividing cone (2) is evenly distributed with perforations (21); a sleeve (22) colinear with its central axis is arranged on the top wall of the dividing cone (2), and the dividing cone (2) is located in the sleeve (22).

2. A grease detection mold according to claim 1, Features: A circular ring-shaped relief portion (23) is provided between the separation cone (2) and the top of the sleeve (22); the top wall of the fat cup (1) abuts against the relief portion (23); the inner circumferential edge of the top wall of the fat cup (1) abuts against the separation cone (2); and the outer circumferential edge of the top wall of the fat cup (1) abuts against the sleeve (22).

3. A grease detection mold according to claim 2, Features: The circumferential edge of the perforation (21) smoothly transitions from the inner circumferential side wall to the outer circumferential side wall of the separation cone (2).

4. A grease detection mold according to claim 3, Features: The partition cone (2) is integrally provided with a partition tube body (3), and the outer circumferential side wall of the partition tube body (3) is in close contact with the tube portion (12).

5. A grease detection mold according to claim 4, Features: The sleeve (22) is provided with an abutment rod (24) abutting against the separation cone (2), and the abutment rod (24) is threadedly connected to the sleeve (22).

6. A grease detection mold according to claim 5, Features: A rubber pad (25) is provided at one end of the abutting rod (24) abutting against the partition cone (2), and an operating portion (26) convenient for hand-holding is provided at one end of the abutting rod (24) away from the partition cone (2).

7. A grease detection mold according to claim 6, Features: The sleeve (22) is made of transparent or translucent material.

8. A grease detection mold according to claim 7, Features: A metal tube (27) is embedded in the sleeve (22), and a thread that matches the thread of the abutment rod (24) is provided on the inner side wall of the metal tube (27).

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