Lubricant viscosity detection device

Abstract

The utility model discloses a lubricant viscosity detection device. Comprising a base, a stator, a greasing column, a rotor, a heat-conducting medium, a spiral pipe and a temperature control system, wherein the stator and the greasing column are fixed on the base; the rotor can be arranged in the stator and is matched with the greasing column; the heat-conducting medium is filled in the greasing column; the detection system is used for detecting the viscosity of a lubricating agent coated outside the greasing column according to the rotating torsion and the angular displacement of the rotor; a first partition plate which is vertically arranged and a plurality of second partition plates which are uniformly arranged up and down are fixed in the greasing column; the first partition plate and the second partition plates divide the interior of the greasing column into two rows of upper and lower independent heat conduction cavities, and an expansion valve set is arranged in the heat conduction cavity, located on the bottommost layer of the left side, of the spiral pipe. The heat-conducting media on the two sides of the first partition plate sequentially circulate in the heat-conducting cavities through the expansion and contraction effects of the expansion valve set, and the problem that in the prior art, the heat transfer efficiency between the heat-conducting media and the spiral pipe is low is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to viscosity detection, and in particular relates to a lubricant viscosity detection device. Background Art

[0002] Grease viscosity has a great influence on the performance of mechanical parts, which is mainly reflected in the product's thickness, strength, air tightness and shear strength. Corresponding technologies have emerged for lubricant viscosity detection. For example, Chinese Patent Publication No. CN211043037U discloses a lubricant viscosity detection device. The heat-conducting medium of the lubricant viscosity detection device is placed in a cavity, and the surface temperature of the heat-conducting medium and the greased column is increased by transferring heat, thereby changing the temperature of the lubricant on the surface of the greased column. Since the viscosity of the lubricant is affected by temperature, temperature differences will occur during the heat transfer process of the heat-conducting medium, thereby affecting the viscosity of the lubricant at different heights, resulting in certain errors in its detection. It is necessary to reduce the temperature difference and improve the accuracy of the detection.

[0003] In response to the above problems, the announcement number CN220323041U discloses a lubricant viscosity detection device, including a base, a grease column, a heat-conducting medium motor stator, a motor rotor and a detection system. The grease column formed by the heat-conducting medium is placed at the center of the upper end of the base. The base is connected to the detection system through the motor stator and the motor rotor. The detection system detects the viscosity of the lubricant coated on the grease column. A spiral tube is provided in the heat-conducting medium. A liquid inlet pipe is provided at the upper end of the spiral tube, and a liquid discharge pipe is provided at the lower end of the spiral tube. The lubricant viscosity detection device, through the spiral tube provided at the heat-conducting medium, adopts the upper end liquid inlet and lower end liquid discharge mode, realizes uniform heat conduction of the heat-conducting medium through the spiral tube, reduces the influence of the temperature difference caused by the heat-conducting time difference of the heat-conducting medium on the lubricant, and minimizes the temperature difference of the heat-conducting medium, which is beneficial to the lubricant viscosity detection and reduces the detection error.

[0004] However, the above lubricant viscosity detection device technology still has the following problems: the heat-conducting medium in the above lubricant viscosity detection device is in a static state in the grease column, and the heat transfer efficiency between the heat-conducting medium and the spiral tube is relatively low. Utility Model Content

[0005] The utility model aims to provide a lubricant viscosity detection device to solve the problem of low heat transfer efficiency between the heat-conducting medium and the spiral tube proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lubricant viscosity detection device, comprising a base, a stator and a grease column fixed on the base, a rotor that can be placed in the stator and adapted to the grease column, a heat-conducting medium filled in the grease column, a spiral tube spirally arranged in the heat-conducting medium, a temperature control system for supplying heat to the spiral tube, and a detection system for detecting the viscosity of the lubricant applied to the outside of the grease column according to the rotational torque and angular displacement of the rotor, wherein a vertically arranged first partition and a plurality of second partitions evenly arranged up and down are fixed in the grease column, the first partition and the plurality of second partitions divide the grease column into two rows of independent heat-conducting chambers up and down, an expansion valve group is arranged in the heat-conducting chamber at the bottom layer on the left side of the spiral tube, a one-way valve group is arranged on the second partition so that the heat-conducting medium on both sides of the first partition circulates in each heat-conducting chamber in sequence through the expansion and contraction effect of the expansion valve group, and a pressure relief component communicating with the heat-conducting chamber at the bottom layer on the right side is provided at the bottom of the base.

[0007] Preferably, the first partition is a trapezoidal structure that is narrow at the top and wide at the bottom. The first partition is provided with a plurality of through holes for the spiral tube to pass through, and a rubber ring sleeved on the outside of the spiral tube is fixed in the through holes.

[0008] Preferably, a first through hole is formed at the top of the first partition plate to communicate with the topmost heat-conducting chambers on both sides, and a second through hole is formed at the bottom of the first partition plate to communicate with the bottommost heat-conducting chambers on both sides.

[0009] Preferably, a third one-way valve is provided in the second through hole, and the flow direction of the third one-way valve is from right to left.

[0010] Preferably, the expansion valve group includes an electromagnetic bypass valve, and an expansion airbag wrapped around the electromagnetic bypass valve is fixed on the outer wall of the spiral tube.

[0011] Preferably, the electromagnetic bypass valve is provided with a port communicating with the inner cavity of the expansion airbag.

[0012] Preferably, the one-way valve group includes a first one-way valve and a second one-way valve, the first one-way valve is arranged on the left side of the first partition, and the second one-way valve is arranged on the right side of the first partition, the flow direction of the first one-way valve is from bottom to top, and the flow direction of the second one-way valve is from top to bottom.

[0013] Preferably, the pressure relief assembly includes a conduit, which is communicated with the heat-conducting chamber at the bottom layer on the right side, and the bottom end of the conduit passes through the base and is connected to an expansion ball.

[0014] Compared with the prior art, the utility model provides a lubricant viscosity detection device, which has the following beneficial effects:

[0015] The utility model makes the heat transfer medium on both sides of the first partition circulate in each heat transfer chamber in sequence through the expansion and contraction effect of the expansion valve group, thereby solving the problem of low heat transfer efficiency between the heat transfer medium and the spiral tube in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the lubricant viscosity detection device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the grease-coated column proposed in the utility model;

[0019] Figure 3 This is a schematic diagram of the first partition structure proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the expansion airbag proposed by the utility model;

[0021] In the figure: 1. base; 2. stator; 3. rotor; 4. detection system; 5. grease-coated column; 6. spiral tube; 7. heat-conducting medium; 8. first partition; 81. perforation; 82. rubber ring; 83. first through hole; 84. second through hole; 85. third one-way valve; 9. second partition; 91. first one-way valve; 92. second one-way valve; 10. expansion valve group; 101. electromagnetic bypass valve; 102. expansion airbag; 103. port; 11. pressure relief assembly; 111. catheter; 112. expansion ball. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 and Figure 2The utility model provides a technical solution: a lubricant viscosity detection device, comprising a base 1, a stator 2 and a grease column 5 fixed on the base 1, a rotor 3 that can be placed in the stator 2 and adapted to the grease column 5, a heat-conducting medium 7 filled in the grease column 5, a spiral tube 6 spirally arranged in the heat-conducting medium 7, a temperature control system for heating the spiral tube 6, and a detection system 4 for detecting the viscosity of the lubricant applied to the outside of the grease column 5 according to the rotational torque and angular displacement of the rotor 3, a vertically arranged first partition 8 and a plurality of second partitions 9 evenly arranged up and down are fixed in the grease column 5, the first partition 8 and the plurality of A second partition 9 separates the greased column 5 into two rows of upper and lower independent heat-conducting chambers. An expansion valve group 10 is arranged in the heat-conducting chamber at the bottom layer on the left side of the spiral tube 6. A one-way valve group is arranged on the second partition 9, which allows the heat-conducting medium 7 on both sides of the first partition 8 to circulate in each heat-conducting chamber in sequence through the expansion and contraction effect of the expansion valve group 10. A pressure relief component 11 is arranged at the bottom of the base 1, which is connected to the heat-conducting chamber at the bottom layer on the right side. The heat-conducting medium 7 on both sides of the first partition 8 is circulated in each heat-conducting chamber in sequence through the expansion and contraction effect of the expansion valve group 10, thereby increasing the heat transfer efficiency of the heat-conducting medium 7.

[0024] See also Figure 2 and Figure 3 The first partition 8 is a trapezoidal structure that is narrow at the top and wide at the bottom. The first partition 8 is provided with a plurality of through holes 81 for the spiral tube 6 to pass through, and a rubber ring 82 sleeved on the outside of the spiral tube 6 is fixed in the through hole 81. The top of the first partition 8 is provided with a first through hole 83 that connects the topmost heat-conducting chambers on both sides, which is used to allow the heat-conducting medium 7 in the topmost heat-conducting chamber on the left to pass into the topmost heat-conducting chamber on the right. The bottom of the first partition 8 is provided with a second through hole 84 that connects the bottommost heat-conducting chambers on both sides, and a third one-way valve 85 is arranged in the second through hole 84. The flow direction of the third one-way valve 85 is from right to left, which is used to pass the heat-conducting medium 7 in the bottommost heat-conducting chamber on the right to the bottommost heat-conducting chamber on the left.

[0025] See also Figure 2 and Figure 4 The expansion valve group 10 includes an electromagnetic bypass valve 101. An expansion airbag 102 wrapped outside the electromagnetic bypass valve 101 is fixed on the outer wall of the spiral tube 6. The electromagnetic bypass valve 101 is provided with a port 103 connected to the inner cavity of the expansion airbag 102. The electromagnetic bypass valve 101 controls the flow direction of the spiral tube 6. When the port 103 is opened, part of the water is filled into the expansion airbag 102, thereby expanding the expansion airbag 102.

[0026] See also Figure 2The one-way valve group includes a first one-way valve 91 and a second one-way valve 92. The first one-way valve 91 is arranged on the left side of the first partition 8, and the second one-way valve 92 is arranged on the right side of the first partition 8. The flow direction of the first one-way valve 91 is from bottom to top, and the flow direction of the second one-way valve 92 is from top to bottom. When the expansion airbag 102 expands, the heat-conducting medium 7 inside the heat-conducting chamber at the bottom layer of the left layer can enter the bottom of the heat-conducting chamber of the upper layer through the first one-way valve 91 on the second partition 9, and the heat-conducting medium 7 at the top of the heat-conducting chamber of the upper layer enters the bottom of the heat-conducting chamber of the upper layer, until entering the heat-conducting chamber of the top layer on the left, and the heat-conducting medium 7 inside the heat-conducting chamber of the top layer on the left enters the heat-conducting chamber of the top layer on the right through the first through hole 83 at the top of the first partition 8, and then enters the heat-conducting chamber of the bottom layer on the right from the heat-conducting chamber of the top layer on the right through the second one-way valve 92 on the second partition 9 in sequence.

[0027] The pressure relief assembly 11 includes a conduit 111, which is connected to the bottom heat-conducting chamber on the right side. The bottom end of the conduit 111 passes through the base 1 and is connected to an expansion ball 112. When the pressure in the bottom heat-conducting chamber on the right side increases, the pressure enters the expansion ball 112 through the conduit 111 to expand the expansion ball 112. When the expansion airbag 102 shrinks, the pressure inside the bottom heat-conducting chamber on the left side decreases, and the elastic shrinkage of the expansion ball 112 can re-introduce the heat-conducting medium 7 temporarily stored inside the expansion ball 112 into the bottom heat-conducting chamber on the right side. The heat-conducting medium 7 inside the bottom heat-conducting chamber on the right side can be introduced into the top heat-conducting chamber on the left side through the third one-way valve 85 on the second through hole 84.

[0028] The working principle and use process of the utility model are as follows: during the test, the lubricant to be tested is evenly applied to the grease column 5, the rotor 3 is mounted on the grease column 5, the temperature control system circulates hot water of a certain temperature to the spiral tube 6, and the temperature of the grease column 5 reaches the set temperature through the heat transfer effect of the heat-conducting medium 7, so as to meet the test of the viscosity of the lubricant at the set temperature, the detection system 4 detects the rotation torque signal and the angular displacement signal of the rotor 3, and then calculates the viscosity value of the lubricant to be tested according to the rotation torque value and the angular displacement value of the rotor 3;

[0029] In the above process, the opening 103 can be opened by the electromagnetic bypass valve 101, so that part of the water can be filled into the expansion airbag 102, thereby expanding the expansion airbag 102, and the heat-conducting medium 7 in the heat-conducting chamber at the bottom layer on the left side can enter the bottom of the heat-conducting chamber at the upper layer through the first one-way valve 91 on the second partition plate 9, and the heat-conducting medium 7 at the top of the heat-conducting chamber at the upper layer can enter the bottom of the heat-conducting chamber at the upper layer, until entering the heat-conducting chamber at the top layer on the left side, and the heat-conducting medium 7 in the heat-conducting chamber at the top layer on the left side can enter the heat-conducting chamber at the top layer on the right side through the first through hole 83 at the top of the first partition plate 8, and then pass through the second one-way valve 92 on the second partition plate 9 from the heat-conducting chamber at the top layer on the right side. The heat-conducting medium 7 temporarily stored in the expansion ball 112 can be introduced into the heat-conducting chamber of the bottom layer on the right side again due to the elastic contraction of the expansion ball 112. The heat-conducting medium 7 in the heat-conducting chamber of the bottom layer on the right side can be introduced into the heat-conducting chamber of the top layer on the left side through the third one-way valve 85 on the second through hole 84, thereby realizing the circulation of the heat-conducting medium 7 in the greased column 5 through the expansion and contraction effect of the expansion airbag 102.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lubricant viscosity detection device, comprising a base (1), a stator (2) and a grease column (5) fixed on the base (1), a rotor (3) that can be placed in the stator (2) and matched with the grease column (5), a heat-conducting medium (7) filled in the grease column (5), a spiral tube (6) spirally arranged in the heat-conducting medium (7), a temperature control system for supplying heat to the spiral tube (6), and a detection system (4) for detecting the viscosity of the lubricant applied to the outside of the grease column (5) according to the rotational torque and angular displacement of the rotor (3), characterized in that: A first partition plate (8) arranged vertically and a plurality of second partition plates (9) evenly arranged vertically are fixed in the greased column (5); the first partition plate (8) and the plurality of second partition plates (9) divide the greased column (5) into two rows of independent heat-conducting chambers in the upper and lower layers; an expansion valve group (10) is arranged in the heat-conducting chamber at the bottom layer on the left side of the spiral tube (6); a one-way valve group is arranged on the second partition plate (9) so that the heat-conducting medium (7) on both sides of the first partition plate (8) circulates in each heat-conducting chamber in sequence through the expansion and contraction effect of the expansion valve group (10); and a pressure relief assembly (11) is arranged at the bottom of the base (1) and communicates with the heat-conducting chamber at the bottom layer on the right side.

2. The lubricant viscosity detection device according to claim 1, characterized in that: The first partition (8) is a trapezoidal structure that is narrow at the top and wide at the bottom. The first partition (8) is provided with a plurality of through holes (81) for the spiral tube (6) to pass through, and a rubber ring (82) sleeved on the outside of the spiral tube (6) is fixed in the through hole (81).

3. The lubricant viscosity detection device according to claim 1, characterized in that: A first through hole (83) is provided at the top of the first partition (8) to allow the topmost heat-conducting chambers on both sides to communicate with each other, and a second through hole (84) is provided at the bottom of the first partition (8) to allow the bottommost heat-conducting chambers on both sides to communicate with each other.

4. The lubricant viscosity detection device according to claim 3, characterized in that: A third one-way valve (85) is disposed in the second through hole (84), and the flow direction of the third one-way valve (85) is from right to left.

5. The lubricant viscosity detection device according to claim 1, characterized in that: The expansion valve assembly (10) comprises an electromagnetic bypass valve (101), and an expansion air bag (102) wrapped around the electromagnetic bypass valve (101) is fixed on the outer wall of the spiral tube (6).

6. The lubricant viscosity detection device according to claim 5, characterized in that: The electromagnetic bypass valve (101) is provided with a through port (103) communicating with the inner cavity of the expansion airbag (102).

7. The lubricant viscosity detection device according to claim 1, characterized in that: The one-way valve group comprises a first one-way valve (91) and a second one-way valve (92); the first one-way valve (91) is arranged on the left side of the first partition (8), and the second one-way valve (92) is arranged on the right side of the first partition (8); the flow direction of the first one-way valve (91) is from bottom to top, and the flow direction of the second one-way valve (92) is from top to bottom.

8. The lubricant viscosity detection device according to claim 1, characterized in that: The pressure relief assembly (11) comprises a conduit (111), the conduit (111) being communicated with the heat conduction chamber at the bottom layer on the right side, and the bottom end of the conduit (111) passes through the base (1) and is communicated with an expansion ball (112).

Images