Defoamer for oil monitoring

Abstract

The utility model provides a defoamer for oil monitoring, which comprises a first defoaming pipe, the oil inlet end of the first defoaming pipe is connected with an oil outlet of an oil pump, the oil discharge end of the first defoaming pipe is connected with an oil inlet of a detection device, and the maximum drift diameter of the first defoaming pipe is smaller than the drift diameter of the oil outlet of the oil pump; wherein the drift diameter of the first defoaming pipe ranges from phi 1.5 mm to phi 3.5 mm, and the length of the first defoaming pipe ranges from 0.5 m to 3 m; the defoaming device for oil liquid monitoring is simple in structure, low in manufacturing cost and convenient to use, pressure loss in the oil liquid flowing process is gradually changed by means of changes of the drift diameter of the defoaming pipe and the drift diameter of an oil outlet of an oil pump, meanwhile, the defoaming pipe keeps a certain length so that pressurization time can be enough, bubbles can be blended into the oil liquid again, and the defoaming effect is good. Therefore, the purpose of eliminating bubbles is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of defoamers, in particular to a defoamer for oil monitoring. Background Art

[0002] Online oil monitoring systems play an important role in the equipment management and operation of industrial enterprises. They are mainly used to improve equipment reliability, reduce maintenance costs, and minimize the occurrence of failures. However, since monitoring devices cannot usually be installed directly on the gearbox or lubricating oil tank of large equipment, an oil pump is required to pump the oil in the large equipment into the monitoring device.

[0003] During the process of oil being sucked into the oil pump and transferred to the oil monitoring device, bubbles may be present within the monitored oil. The main reasons for the presence of bubbles in the oil are: 1. Hydraulic oil may absorb air during transportation and storage, resulting in bubbles in the hydraulic oil; 2. During the process of oil being sucked in and discharged by the oil pump, changes in the internal pressure of the oil pump and changes in flow rate cause air and oil vapor in the oil to precipitate and aggregate, thus forming bubbles. The bubbles formed and the bubbles in the oil flow into the monitoring device along with the oil. When bubbles enter the monitoring device, they affect the ability of the sensors within the oil monitoring device to identify indicators such as impurities and particulate matter within the oil, affecting the accuracy of oil detection and even causing errors in the oil detection results, thereby misleading the judgment.

[0004] Currently, common methods for eliminating bubbles in oil pipes include spiral tube debubbling, heating, vacuum debubbling, stirring, adding flow guides to the pipes, designing custom debubblers, and adding defoaming agents to the lubricating oil. However, most existing debubblers are complex and expensive. Furthermore, the basic principle of existing debubbling devices is to separate bubbles from the oil to eliminate bubbles. This method is costly and does not fully eliminate bubbles. Summary of the Invention

[0005] The utility model provides a defoamer for oil monitoring, which is used to solve the problems of the existing defoamer having a complex structure, high cost and poor bubble elimination effect.

[0006] The technical solution of the utility model is:

[0007] A defoamer for oil monitoring includes a first defoaming tube, wherein the oil inlet end of the first defoaming tube is connected to the oil outlet of an oil pump, the oil discharge end of the first defoaming tube is connected to the oil inlet of a detection device, and the maximum diameter of the first defoaming tube is smaller than the diameter of the oil outlet of the oil pump; wherein the diameter of the first defoaming tube is between Φ1.5 mm and Φ3.5 mm, and the length of the first defoaming tube is between 0.5 m and 3 m.

[0008] It also includes a second defoaming pipe, the oil inlet end of the second defoaming pipe is connected to the oil outlet of the oil pump, and the oil discharge end of the second defoaming pipe is connected to the oil inlet end of the first defoaming pipe; wherein, the diameter of the second defoaming pipe is smaller than the diameter of the oil outlet of the oil pump, and the diameter of the second defoaming pipe is larger than the maximum diameter of the first defoaming pipe.

[0009] The above-mentioned first defoaming pipe is an integrated pipe, the oil inlet end of the integrated pipe is connected to the oil outlet of the above-mentioned oil pump, and the oil discharge end of the integrated pipe is connected to the oil inlet of the above-mentioned detection device. The diameter of the pipe gradually decreases from the oil inlet end to the oil discharge end of the integrated pipe.

[0010] One or more bending sections are formed on the front half of the first defoaming tube.

[0011] The oil pump is a spherical pump, and the spherical pump and a motor for driving the spherical pump to rotate form a pump-machine assembly.

[0012] The first defoaming pipe is spirally wound around the outer periphery of the oil pump.

[0013] The first defoaming pipe is a spiral inner pipe, which is arranged on a circular ring body, and the circular ring body is sleeved on the outer periphery of the oil pump.

[0014] The first defoaming pipe and the second defoaming pipe are both spirally wound around the outer circumference of the oil pump.

[0015] The first defoaming pipe and the second defoaming pipe are both spiral inner pipes, the spiral inner pipes are opened on the annular body, and the annular body is sleeved on the outer circumference of the oil pump.

[0016] It also includes a transition pipe, the oil discharge end of the above-mentioned first defoaming pipe is connected to the oil inlet end of the transition pipe, the oil discharge end of the transition pipe is connected to the oil inlet of the above-mentioned detection device, and the diameter of the transition pipe is larger than the maximum diameter of the above-mentioned first defoaming pipe.

[0017] The first defoaming tube and the second defoaming tube are encapsulated inside the shell.

[0018] A button one-way valve is provided at the oil outlet of the oil pump, or a button one-way valve is provided between the second defoaming pipe and the first defoaming pipe, or a button one-way valve is provided at the oil outlet of the oil pump and between the second defoaming pipe and the first defoaming pipe.

[0019] One or more defoaming grids are connected in series on the front half of the first defoaming pipe. The flow cross section of the defoaming grid is provided with multiple parallel bars. If there are multiple defoaming grids, the bars of two adjacent defoaming grids are at an angle.

[0020] Beneficial effects of the utility model:

[0021] 1. This utility model provides a defoamer for oil monitoring that eliminates bubbles by allowing them to reintegrate into the oil. This utility model utilizes the change in the diameter of the defoamer tube relative to the oil pump outlet to alter the pressure loss during the oil flow process, thereby achieving a pressure change within the defoamer tube. Furthermore, since the defoamer tube has a certain length, the time it takes for the oil to flow through it is extended, allowing bubbles within the oil sufficient time to reintegrate into the oil, thereby achieving the purpose of eliminating bubbles.

[0022] 2. The utility model provides a defoamer for oil monitoring, which has a simple structure, low manufacturing cost and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present utility model.

[0024] Figure 2 This is a schematic diagram of the connection between the second defoaming pipe, the first defoaming pipe, and the transition pipe in Example 2 of the present invention.

[0025] Figure 3 This is a schematic structural diagram of the torus in Example 2 of the present utility model.

[0026] Figure 4 This is a schematic diagram of forming multiple bending sections on the front half of the first defoaming tube in Example 4 of the present utility model.

[0027] Figure 5 This is a schematic diagram of the first defoaming pipe, the second defoaming pipe and the transition pipe in Example 5 of the present utility model spirally coiled around the outside of the oil pump.

[0028] Figure 6 This is a schematic diagram showing that the first defoaming tube, the second defoaming tube and the transition tube are all encapsulated inside the shell in Example 6 of the present utility model.

[0029] Figure 7 This is a schematic diagram of setting button one-way valves at two different positions in Example 7 of the present utility model.

[0030] Figure 8 This is a schematic diagram of two defoaming grids connected in series on the front half of the first defoaming pipe in Example 8 of the present utility model.

[0031] Figure 9 This is a schematic diagram of the defoaming grid in Example 8 of the present utility model.

[0032] Description of reference numerals:

[0033] 1. First defoaming pipe; 101. Bending section; 2. Oil pump; 201. Oil pump outlet; 202. Oil pump inlet; 3. Detection device; 4. Motor; 5. Second defoaming pipe; 6. Transition pipe; 7. Torus; 701. Oil inlet of torus; 702. Oil outlet of torus; 8. Housing; 9. Button check valve; 10. Defoaming screen; 1001. Screen bars. DETAILED DESCRIPTION

[0034] The following combination Figures 1 to 9 , the specific implementation methods of the present utility model are described in detail, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation methods.

[0035] Example 1:

[0036] like Figure 1 As shown, Example 1 of the utility model provides a defoamer for oil monitoring, including a first defoaming tube 1, the oil inlet end of the first defoaming tube 1 is connected to the oil outlet of the oil pump 2, the oil discharge end of the first defoaming tube 1 is connected to the oil inlet of the detection device 3, and the maximum diameter of the first defoaming tube 1 is smaller than the diameter of the oil outlet of the oil pump 2; wherein, the diameter of the first defoaming tube 1 is between Φ1.5mm and Φ3.5mm, and the length of the first defoaming tube 1 is between 0.5m and 3m.

[0037] In this embodiment, the oil pump 2 is a spherical pump. The spherical pump and the motor 4 used to drive the spherical pump form a pump-machine assembly. Spherical pumps are a recently invented spherical power machine that features a small size, light weight, and high pressure. For example, a micro spherical pump discloses its specific structure, and various other applications of spherical pumps are under development.

[0038] In this embodiment, the first defoaming tube 1 can be spirally wound around the outer periphery of the oil pump, or the first defoaming tube 1 can be configured as a spiral inner pipe, with the spiral inner pipe being provided on the annular body 7, which is sleeved around the outer periphery of the oil pump 2. It should be noted that whether the first defoaming tube 1 is spirally wound around the outer periphery of the oil pump 2 or the first defoaming tube 1 is configured as a spiral inner pipe, both can save installation space for the defoamer.

[0039] During use, oil enters through the oil pump inlet 202 and is discharged through the oil pump outlet 201. If bubbles are present in the oil discharged through the oil pump outlet 201, the bubbles will flow into the detection device 3 along with the oil. The entry of bubbles into the detection device 3 will affect the sensor in the detection device 3 in identifying indicators such as impurities and particulate matter within the oil, affecting the accuracy of oil detection and even causing errors in the oil detection results, thereby misleading the judgment. At the same time, if bubbles are present in the oil, when the bubbles collapse, local high temperatures will occur, which will cause the additives in the oil to be destroyed, generating free carbon, acidity, and sticky precipitates, accelerating the oxidation process of the oil. The increase in oil temperature will also accelerate oil oxidation, reduce the lubrication performance of the oil, and accelerate the aging of the seals.

[0040] In order to prevent the bubbles in the oil discharged through the oil pump outlet 201 from flowing directly into the detection device 3, the oil outlet of the oil pump 2 is connected to the oil inlet end of the first defoaming tube 1, and the oil discharge end of the first defoaming tube 1 is connected to the oil inlet of the detection device 3. The maximum diameter of the first defoaming tube 1 is smaller than the diameter of the oil pump outlet 201. In this embodiment, the diameter of the oil pump outlet 201 is Φ6mm, and the diameter of the first defoaming tube 1 is selected from any value between Φ1.5mm and Φ3.5mm. In this embodiment, the diameter of the first defoaming tube 1 is Φ2.5mm, and the length of the first defoaming tube 1 is selected from any value between 0.5m and 3m. In this embodiment, the length of the first defoaming tube 1 is 1.5m.

[0041] It should be noted that, in this embodiment, the maximum diameter of the first defoaming tube 1 is smaller than the diameter of the oil outlet of the oil pump 2. By changing the diameter of the first defoaming tube 1 of a certain length and the first defoaming tube 1 relative to the oil outlet of the oil pump 2, the pressure loss of the oil flow process is changed to achieve the purpose of changing the pressure of the oil inside the first defoaming tube 1. At the same time, since the first defoaming tube 1 has a certain length, the time for the oil to flow through the first defoaming tube 1 is extended, so that the bubbles in the oil have enough time to reintegrate into the oil, thereby achieving the purpose of eliminating bubbles.

[0042] Example 2:

[0043] This embodiment is based on Example 1, except that in this embodiment, it is optional to add only a second defoaming tube 5 between the first defoaming tube 1 and the oil outlet of the oil pump 2, or to add both a second defoaming tube 5 between the first defoaming tube 1 and the oil outlet of the oil pump 2 and a transition tube 6 between the first defoaming tube 1 and the detection device 3; wherein the diameter of the second defoaming tube 5 is smaller than the diameter of the oil outlet of the oil pump 2, and the diameter of the second defoaming tube 5 is larger than the maximum diameter of the first defoaming tube 1.

[0044] It should be noted that the second defoaming tube 5 is connected to the oil outlet of the oil pump 2. The diameter of the second defoaming tube 5 can be any value selected between Φ3.5mm and Φ5mm, but is required to be smaller than the diameter of the oil outlet of the oil pump 2. In this embodiment, 4mm is selected. The length of the oil pipe of the second defoaming tube 5 can be any value selected between 0.5m and 1.2m. In this embodiment, 0.8m is selected.

[0045] If both the second defoaming pipe 5 and the transition pipe 6 are added, the oil inlet end of the first defoaming pipe 1 is connected to the oil discharge end of the second defoaming pipe 5, the oil inlet end of the second defoaming pipe 5 is connected to the oil outlet of the oil pump 2, the diameter of the second defoaming pipe 5 is smaller than the diameter of the oil outlet of the oil pump 2, and the diameter of the second defoaming pipe 5 is larger than the maximum diameter of the first defoaming pipe 1. The oil discharge end of the first defoaming pipe 1 is connected to the oil inlet end of the transition pipe 6, the oil discharge end of the transition pipe 6 is connected to the oil inlet of the detection device 3, and the diameter of the transition pipe 6 is larger than the maximum diameter of the first defoaming pipe 1. In this embodiment, the diameter of the transition pipe 6 is selected to be 4 mm, as shown in FIG. Figure 2 , which is a schematic diagram of the connection between the second defoaming pipe, the first defoaming pipe, and the transition pipe in this embodiment.

[0046] In this embodiment, the first defoaming pipe 1, the second defoaming pipe and the transition pipe 6 are all spiral inner pipes, which are opened on the annular body 7. The annular body 7 is sleeved on the outside of the oil pump 2 and fixed on the pump assembly. Figure 3 Figure 2 is a schematic structural diagram of the annular body 7. The upper end of the annular body 7 is provided with an annular oil inlet 701, which is connected to the oil inlet end of the second defoaming pipe 5. The lower end of the annular body 7 is provided with an annular oil outlet 702, which is connected to the detection device 3. It should be noted that fixing the annular body 7 to the pump assembly can save installation space for the defoamer.

[0047] In this embodiment, the oil inlet end of the first defoaming pipe 1 is connected to the oil discharge end of the second defoaming pipe 5 , and the oil discharge end of the first defoaming pipe 1 is connected to the oil inlet end of the transition pipe 6 .

[0048] In practical applications, the second defoaming pipe 5 or the transition pipe 6 may be a single pipe, or may be composed of two or more pipes connected in series.

[0049] If the second defoaming pipe 5 is a single pipe, the oil inlet end of the single pipe is connected to the oil pump outlet 201, and the oil discharge end of the single pipe is connected to the first defoaming pipe 1; if the second defoaming pipe 5 is composed of several sections of pipes connected in series, the first section of the second defoaming pipe 5 is connected to the oil pump outlet 201, and the last section of the second defoaming pipe 5 is connected to the first defoaming pipe 1, and the diameter of the second defoaming pipe 5 becomes smaller along the flow direction of the oil, that is, the diameter of the second defoaming pipe 5 decreases section by section; if the second defoaming pipe 5 is composed of several sections of pipes connected in series, the diameter of the last section of the second defoaming pipe 5 is greater than the maximum diameter of the first defoaming pipe 1, and the total length of the second defoaming pipe 5 is between 0.5m and 1.2m.

[0050] If the transition pipe 6 is a single pipe, the oil inlet end of the single pipe is connected to the oil discharge end of the first defoaming pipe 1, and the oil discharge end of the single pipe is connected to the oil inlet of the detection device 3;

[0051] If the transition pipe 6 is composed of several pipe sections connected in series, the first section of the transition pipe 6 is connected to the first defoaming pipe 1, and the last section of the transition pipe 6 is connected to the detection device 3. The diameter of the transition pipe 6 increases along the direction of oil flow, that is, the diameter of the transition pipe 6 increases section by section. If the transition pipe 6 is composed of several pipe sections connected in series, the diameter of the first section of the transition pipe 6 is greater than the maximum diameter of the first defoaming pipe 1. It should be noted that the function of the transition pipe 6 is to achieve a transition between the first defoaming pipe 1 and the detection device 3. Therefore, the diameter of the transition pipe 6 can be selected based on the diameter of the oil inlet of the detection device 3.

[0052] It should be noted that in this embodiment, after the oil is discharged from the oil pump outlet 201, it passes through the second debubble pipe 5 and then enters the first debubble pipe 1. Since the diameter of the second debubble pipe 5 is smaller than that of the oil pump outlet 201, and the diameter of the first debubble pipe 1 is smaller than that of the second debubble pipe 5, the pressure loss during the oil flow process is gradually changed by changing the diameters of the oil pump outlet 201, the second debubble pipe 5, and the first debubble pipe 1. The pressure in the second debubble pipe 5 and the first debubble pipe 1 increases, and the bubbles in the second debubble pipe 5 gradually dissolve into the oil. The remaining bubbles further dissolve in the first debubble pipe 1 as the flow time in the first debubble pipe 1 increases, thereby achieving a better bubble elimination effect. At the same time, the pipe diameter is gradually enlarged through the transition pipe 6 and connected to the oil inlet of the detection device 3. The flow rate gradually slows during the flow, allowing the oil to flow smoothly into the detection device without generating new bubbles. This also prevents sudden pressure changes and achieves a better bubble elimination effect.

[0053] As another form, for the second defoaming tube 5 of a single pipeline, its diameter can change continuously from front to back from large to small. The large end of the second defoaming tube 5 of the single pipeline is connected to the oil outlet 201 of the oil pump, and the small end of the second defoaming tube 5 of the single pipeline is connected to the oil inlet of the first defoaming tube 1. The diameter of the large end of the single pipeline is smaller than the diameter of the oil outlet 201 of the oil pump, and the diameter of the small end is larger than the diameter of the first defoaming tube 1.

[0054] As another form, for the transition pipe 6 of a single pipeline, its diameter can continuously change from small to large from front to back, the small end of the transition pipe 6 of the single pipeline is connected to the oil outlet of the first defoaming pipe 1, and the large end of the transition pipe 6 of the single pipeline is connected to the oil inlet of the detection device 3. The diameter of the large end of the transition pipe 6 of the single pipeline is larger than the diameter of the first defoaming pipe 1 and smaller than the diameter of the oil inlet of the detection device 3.

[0055] Example 3:

[0056] This embodiment is based on Example 1, except that in this embodiment, the first defoaming pipe 1 is an integrated pipe. The oil inlet end of the integrated pipe is connected to the oil pump outlet 201, and the oil discharge end of the integrated pipe is connected to the oil inlet of the detection device 3. The pipe diameter gradually decreases from the oil inlet end to the oil discharge end of the integrated pipe. The oil inlet end of the integrated pipe is the oil inlet end of the first defoaming pipe 1, and the oil discharge end of the integrated pipe is the oil discharge end of the first defoaming pipe 1. The length of the integrated pipe with a diameter between Φ1.5 mm and Φ3.5 mm is between 0.5 m and 3 m. In this embodiment, the length of the integrated pipe with a diameter between Φ1.5 mm and Φ3.5 mm is 1.5 m.

[0057] Specifically, when using the defoamer for oil monitoring provided in this embodiment, in order to eliminate bubbles, the oil pump outlet 201 is connected to the oil inlet end of the integrated pipeline of the defoamer. Since the diameter of the pipeline from the oil inlet end to the oil discharge end of the integrated pipeline gradually becomes smaller, the pressure loss in the oil flow process can be gradually changed. At the same time, since the length of the integrated pipeline is between 0.5m and 3m, the bubbles have enough time to reintegrate into the oil, thereby achieving the purpose of eliminating bubbles. Therefore, the bubbles in the oil discharged through the oil discharge end of the integrated pipeline are basically eliminated, achieving a better bubble elimination effect.

[0058] Example 4:

[0059] This embodiment is based on embodiment 1, except that in this embodiment, one or more bending sections are formed on the front half of the first defoaming tube.

[0060] It should be noted that in this embodiment, the number of the bending segments is one or more, and the shape of the bending segments is U-shaped or V-shaped; if the number of the bending segments is multiple, the multiple bending segments may be connected or not. Figure 4FIG. 1 is a schematic diagram showing a plurality of bending sections formed on the front half of the first defoaming tube.

[0061] If there are many bubbles in the oil discharged from the oil pump outlet 201, the large bubbles will be impacted into small bubbles after passing through several connected U-shaped bends, and then the small bubbles will enter the first debubble pipe 1; since the maximum diameter of the first debubble pipe 1 is smaller than the diameter of the oil pump outlet 201, the change in the diameter of the oil pump outlet 201 and the first debubble pipe 1 is used to change the pressure of the oil flow process, so that the pressure in the first debubble pipe 1 is increased. When the pressure increases, small bubbles are more easily dissolved in the oil, so providing several connected U-shaped bends can achieve a better bubble elimination effect.

[0062] Example 5:

[0063] This embodiment is based on Example 2, but differs in that, in this embodiment, the first defoaming pipe 1 and the second defoaming pipe 5 are both spirally coiled around the outer periphery of the oil pump 2; at the same time, in this embodiment, the first defoaming pipe 1, the second defoaming pipe 5 and the transition pipe 6 are connected into one to form an integrated connecting pipe, which is spirally coiled around the outer periphery of the oil pump 2.

[0064] It should be noted that, in this embodiment, Figure 5 The figure shows a schematic diagram of the first defoaming pipe, the second defoaming pipe and the transition pipe being spirally wound around the outer periphery of the oil pump. Spiral winding the first defoaming pipe, the second defoaming pipe and the transition pipe around the outer periphery of the oil pump can save the installation space of the defoamer.

[0065] Example 6:

[0066] This embodiment is based on the embodiment 2, but the difference is that in this embodiment, if only the second defoaming tube 5 is added between the first defoaming tube 1 and the oil pump outlet 201, then the first defoaming tube 1 and the second defoaming tube 5 are encapsulated inside the housing 8; if the second defoaming tube 5 is added between the first defoaming tube 1 and the oil pump outlet 201, and the transition tube 6 is added between the first defoaming tube 1 and the detection device 3, then the first defoaming tube 1, the second defoaming tube 5 and the transition tube 6 are all encapsulated inside the housing 8, as shown in FIG. Figure 6 It is a schematic diagram showing that the first defoaming pipe 1 , the second defoaming pipe 5 and the transition pipe 6 are all encapsulated inside the shell 8 .

[0067] The shell 8 is provided with a first through hole allowing the oil inlet end of the second defoaming tube 5 to pass through, and the shell 8 is also provided with a second through hole allowing the oil discharge end of the first defoaming tube 1 to pass through; the shell 8 adopts a detachable structure to facilitate the removal of the first defoaming tube 1 placed inside it, and arranging the first defoaming tube 1 inside the shell 8 can prevent external force from causing deformation of the first defoaming tube 1. At the same time, the defoamer is an independent component and can be used selectively.

[0068] Example 7:

[0069] This embodiment is based on Example 2, but differs in that in this embodiment, a button one-way valve may be optionally provided at the oil pump outlet 201, or a button one-way valve may be provided between the second defoaming pipe 5 and the first defoaming pipe 1, or a button one-way valve may be provided at the oil pump outlet 201 and between the second defoaming pipe 5 and the first defoaming pipe 1.

[0070] In this embodiment, there are three situations for the setting position of the button check valve: 1. A button check valve is only provided at the oil pump outlet; 2. A button check valve is only provided between the second defoaming pipe and the first defoaming pipe; 3. A button check valve is provided at the oil pump outlet and a button check valve is provided between the second defoaming pipe and the first defoaming pipe. Figure 7 Shown is a schematic diagram of setting a button check valve in two different positions.

[0071] In this embodiment, a button one-way valve is used to decompose large bubbles into small bubbles, and at the same time, a certain pressure is increased to facilitate the bubbles to dissolve into the oil more quickly, thereby increasing the defoaming effect. When the oil is a high-viscosity oil, the effect of adding a button one-way valve to assist in eliminating bubbles is more obvious. After adding a button one-way valve, the length of the first defoaming tube 1 can be shortened.

[0072] Example 8:

[0073] This embodiment is based on Example 2, except that in this embodiment, one or more defoaming grids 10 are connected in series to the front half of the first defoaming pipe 1. The defoaming grid 10 has a plurality of parallel bars 1001 arranged on the flow cross section. The spacing between the bars 1001 is greater than the maximum size of the particles in the oil. If there are multiple defoaming grids 10, the bars 1001 of two adjacent defoaming grids 10 are at an angle.

[0074] like Figure 8 As shown in FIG, in this embodiment, two defoaming grids 10 are connected in series on the front half of the first defoaming pipe 1; the cross section of the defoaming grid 10 can be parallel to the cross section of the first defoaming pipe 1, or the cross section of the defoaming grid 10 can be non-parallel to the cross section of the first defoaming pipe 1; if there are multiple defoaming grids 10, the bars 1001 of the two adjacent defoaming grids 10 are at an angle. In this embodiment, the bars 1001 of the two adjacent defoaming grids 10 are at 90°, as shown in FIG. Figure 9 , which is a schematic diagram of the defoaming grid 10 in this embodiment 8.

[0075] It should be noted that the purpose of the defoaming grid 10 in this embodiment is to cut large bubbles in the oil into small bubbles. The number of defoaming grids 10 is set to multiple and arranged at a certain angle, which can improve the cutting effect of large bubbles in the oil. The defoaming grid 10 is connected in series with the front half of the first defoaming pipe 1, so that large bubbles in the oil are cut into small bubbles in the front half of the first defoaming pipe 1. The small bubbles enter the back half of the first defoaming pipe 1. Since small bubbles are more easily integrated into the oil, the defoaming grid 10 can achieve a better bubble elimination effect. The cross-section of the defoaming grid 10 is provided with multiple parallel bars 1001 to achieve a better bubble cutting effect. The bars 1001 of the defoaming grid 10 are spaced apart at a certain distance. This spacing can be determined based on the size of the wear particles generated by the oil pump 2 during use to ensure that the wear particles can normally pass through the bars 1001 of the defoaming grid 10, making the defoamer less likely to clog and increasing the service life of the defoamer.

[0076] In summary, the utility model provides a defoamer for oil monitoring, which has a simple structure and eliminates bubbles by allowing the bubbles to blend into the oil. It also has low manufacturing cost and is easy to use.

Claims

1. A defoamer for oil monitoring, characterized in that: It includes a first defoaming tube, the oil inlet end of the first defoaming tube is connected to the oil outlet of the oil pump, the oil discharge end of the first defoaming tube is connected to the oil inlet of the detection device, and the maximum diameter of the first defoaming tube is smaller than the diameter of the oil outlet of the oil pump; wherein, the diameter of the first defoaming tube is between Φ1.5mm and Φ3.5mm, and the length of the first defoaming tube is between 0.5m and 3m.

2. The defoamer for oil monitoring according to claim 1, characterized in that: It also includes a second defoaming pipe, the oil inlet end of the second defoaming pipe is connected to the oil outlet of the oil pump, and the oil discharge end of the second defoaming pipe is connected to the oil inlet end of the first defoaming pipe; wherein, the diameter of the second defoaming pipe is smaller than the diameter of the oil outlet of the oil pump, and the diameter of the second defoaming pipe is larger than the maximum diameter of the first defoaming pipe.

3. The defoamer for oil monitoring according to claim 1, characterized in that: The first defoaming pipe is an integrated pipe, the oil inlet end of the integrated pipe is connected to the oil outlet of the oil pump, and the oil discharge end of the integrated pipe is connected to the oil inlet of the detection device. The diameter of the pipe gradually decreases from the oil inlet end to the oil discharge end of the integrated pipe.

4. The defoamer for oil monitoring according to claim 1, characterized in that: One or more bending sections are formed on the front half of the first defoaming tube.

5. The defoamer for oil monitoring according to any one of claims 1 to 4, characterized in that: The oil pump is a spherical pump, and the spherical pump and a motor for driving the spherical pump to rotate form a pump-machine assembly.

6. The defoamer for oil monitoring according to claim 5, characterized in that: The first defoaming tube is spirally wound around the outer periphery of the oil pump.

7. The defoamer for oil monitoring according to claim 5, characterized in that: The first defoaming pipe is a spiral inner pipe, which is arranged on a ring body, and the ring body is sleeved on the outer periphery of the oil pump.

8. The defoamer for oil monitoring according to claim 2, characterized in that: The first defoaming pipe and the second defoaming pipe are both spirally wound around the outer circumference of the oil pump.

9. The defoamer for oil monitoring according to claim 2, characterized in that: The first defoaming pipe and the second defoaming pipe are both spiral inner pipes, and the spiral inner pipes are opened on a ring body, and the ring body is sleeved on the outer circumference of the oil pump.

10. The defoamer for oil monitoring according to claim 2, characterized in that: It also includes a transition pipe, the oil discharge end of the first defoaming pipe is connected to the oil inlet end of the transition pipe, the oil discharge end of the transition pipe is connected to the oil inlet of the detection device, and the diameter of the transition pipe is larger than the maximum diameter of the first defoaming pipe.

11. The defoamer for oil monitoring according to claim 2, characterized in that: The first defoaming tube and the second defoaming tube are encapsulated inside the shell.

12. The defoamer for oil monitoring according to claim 2, characterized in that: A button one-way valve is provided at the oil pump outlet, or a button one-way valve is provided between the second defoaming pipe and the first defoaming pipe, or a button one-way valve is provided at the oil pump outlet and between the second defoaming pipe and the first defoaming pipe.

13. The defoamer for oil monitoring according to claim 1, characterized in that: One or more defoaming grids are connected in series on the front half of the first defoaming pipe, and a plurality of parallel bars are arranged on the flow cross section of the defoaming grid; if there are multiple defoaming grids, the bars of two adjacent defoaming grids are at an angle.

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