Defoamer for oil monitoring

Abstract

The invention 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, the pressurization time is enough, bubbles are fused into the oil liquid again, and the defoaming effect is good. Therefore, the purpose of eliminating bubbles is achieved.

Description

Technical Field

[0001] This invention relates to the field of defoamer technology, and in particular to a defoamer for oil monitoring. Background Technology

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

[0003] During the process of hydraulic oil being drawn into the pump and transported to the monitoring device, air bubbles may be present within the monitored oil. The main reasons for the presence of air bubbles in the oil are: 1. Air may be drawn into the hydraulic oil during transportation and storage, resulting in the presence of air bubbles; 2. During the pump's intake and discharge, changes in internal pump pressure and flow rate cause air and oil vapor in the oil to precipitate and accumulate, forming air bubbles. These air bubbles, along with any existing air bubbles in the oil, flow into the monitoring device. When air bubbles enter the monitoring device, they can affect the sensors' ability to identify impurities and particulate matter within the oil, impacting the accuracy of oil detection and potentially leading to incorrect results and misleading judgments.

[0004] Currently, common methods for eliminating air bubbles in oil pipes include spiral tube debubbling, heating debubbling, vacuum debubbling, stirring debubbling, adding guide elements inside the oil pipe, designing defoamers with specific structures, and adding defoamers to the lubricating oil. However, most existing defoamers are complex in structure and expensive. Furthermore, the basic principle of existing defoaming devices is to separate air bubbles from the oil to achieve debubbling, which is costly and does not completely eliminate air bubbles. Summary of the Invention

[0005] This invention provides a defoamer for oil monitoring, which solves the problems of existing defoamers having complex structures, high costs, and poor bubble elimination effects.

[0006] The technical solution of this invention is:

[0007] An oil defoamer for monitoring oil content includes a first defoaming tube. The inlet end of the first defoaming tube is connected to the outlet of an oil pump, and the outlet end of the first defoaming tube is connected to the oil inlet of a detection device. The maximum diameter of the first defoaming tube is smaller than the diameter of the outlet of the oil pump. 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.

[0008] It also includes a second defoaming pipe, the oil inlet of which is connected to the oil outlet of the oil pump, and the oil outlet of which is connected to the oil inlet 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 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 outlet end of the integrated pipe is connected to the oil inlet of the detection device. The pipe diameter gradually decreases from the oil inlet end to the oil outlet end of the integrated pipe.

[0010] One or more bends are formed in the front half of the first defoaming tube.

[0011] The aforementioned oil pump is a spherical pump, and the spherical pump and the motor used to drive the spherical pump to rotate form a pump assembly.

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

[0013] The aforementioned first defoaming pipe is a spiral inner pipe, which is opened on a circular ring, and the circular ring is fitted around the outer periphery of the aforementioned oil pump.

[0014] Both the first defoaming tube and the second defoaming tube are spirally coiled around the outer periphery of the oil pump.

[0015] Both the first defoaming pipe and the second defoaming pipe are spiral-shaped inner pipes, which are opened on a ring body, and the ring body is fitted around the outer periphery of the oil pump.

[0016] It also includes a transition pipe, wherein 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 greater than the maximum diameter of the first defoaming pipe.

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

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

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

[0020] The beneficial effects of this invention are:

[0021] 1. This invention provides an oil defoamer for monitoring oil quality, which eliminates air bubbles by allowing them to reintegrate into the oil. This invention utilizes the change in the diameter of the defoaming tube relative to the oil pump outlet to alter the pressure loss during oil flow, thus achieving a pressure change within the defoaming tube. Simultaneously, because the defoaming tube has a certain length, extending the time the oil flows through it allows sufficient time for the air bubbles to reintegrate, thereby eliminating the air bubbles.

[0022] 2. The defoamer for oil monitoring provided by this invention has a simple structure, low manufacturing cost, and is easy to use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of the present invention.

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

[0025] Figure 3 This is a schematic diagram of the structure of the annulus in Embodiment 2 of the present invention.

[0026] Figure 4 This is a schematic diagram of multiple bent segments formed on the front half of the first defoaming tube in Embodiment 4 of the present invention.

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

[0028] Figure 6 This is a schematic diagram of Embodiment 6 of the present invention, in which the first defoaming tube, the second defoaming tube, and the transition tube are all encapsulated inside the shell.

[0029] Figure 7 This is a schematic diagram of a button check valve installed at two different locations in Embodiment 7 of the present invention.

[0030] Figure 8 This is a schematic diagram of two defoaming grids connected in series in the first half of the defoaming pipe in Embodiment 8 of the present invention.

[0031] Figure 9 This is a schematic diagram of the defoaming grid in Embodiment 8 of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. First defoaming pipe; 101. Bend 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. Circular ring; 701. Circular ring inlet; 702. Circular ring outlet; 8. Housing; 9. Button check valve; 10. Defoaming grid; 1001. Grid bar. Detailed Implementation

[0034] The following is combined Figures 1 to 9 The specific embodiments of the present invention will be described in detail, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0035] Example 1:

[0036] like Figure 1 As shown, Embodiment 1 of the present invention provides an oil 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, and the oil outlet 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 outlet of the oil pump 2. 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, and the spherical pump and the motor 4 used to drive the rotation of the spherical pump form a pump assembly. The spherical pump is a newly invented spherical power machine in recent years. It is small in size, light in weight, and has high pressure. For example, the specific structure of the spherical pump is disclosed in a miniature spherical pump, and various other applications of the spherical pump are under development.

[0038] In this embodiment, the first defoaming tube 1 can be spirally coiled 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 formed on the annular body 7, which is fitted around the outer periphery of the oil pump 2. It should be noted that whether the first defoaming tube 1 is spirally coiled around the outer periphery of the oil pump 2 or configured as a spiral inner pipe, the installation space of the defoamer can be saved.

[0039] During operation, the oil enters through the oil pump inlet 202 and exits through the oil pump outlet 201. If air bubbles are present in the oil exiting through the outlet 201, these bubbles will flow into the detection device 3 along with the oil. These air bubbles will affect the sensors within the detection device 3 in identifying impurities and particulate matter within the oil, impacting the accuracy of oil detection and potentially leading to incorrect results and misleading judgments. Furthermore, the presence of air bubbles in the oil can cause localized high temperatures when they collapse. This can damage additives in the oil, producing free carbon, acids, and sticky precipitates, accelerating the oil oxidation process. The increased oil temperature further accelerates oxidation, reducing the oil's lubricating performance and accelerating the aging of seals.

[0040] To prevent air bubbles in the oil discharged through the oil pump outlet 201 from flowing directly into the detection device 3, in this embodiment, the oil pump outlet 2 is connected to the oil inlet of the first defoaming pipe 1, and the oil outlet of the first defoaming pipe 1 is connected to the oil inlet of the detection device 3. The maximum diameter of the first defoaming pipe 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. The diameter of the first defoaming pipe 1 can be any value between Φ1.5mm and Φ3.5mm. In this embodiment, the diameter of the first defoaming pipe 1 is Φ2.5mm. The length of the first defoaming pipe 1 can be any value between 0.5m and 3m. In this embodiment, the length of the first defoaming pipe 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 length of the first defoaming tube 1 and the diameter of the first defoaming tube 1 relative to the oil outlet of the oil pump 2, the pressure loss in the oil flow process is changed, thereby achieving the purpose of pressure change in 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, allowing the air bubbles in the oil sufficient time to re-integrate into the oil, thereby achieving the purpose of eliminating air bubbles.

[0042] Example 2:

[0043] This embodiment is based on embodiment 1, except that in this embodiment, a second defoaming pipe 5 can be added only between the first defoaming pipe 1 and the oil outlet of the oil pump 2, or a second defoaming pipe 5 can be added between the first defoaming pipe 1 and the oil outlet of the oil pump 2, and a transition pipe 6 can be added between the first defoaming pipe 1 and the detection device 3; wherein, 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.

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

[0045] If both a second defoaming pipe 5 and a transition pipe 6 are added, the oil inlet end of the first defoaming pipe 1 is connected to the oil outlet end of the second defoaming pipe 5, and 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 outlet end of the first defoaming pipe 1 is connected to the oil inlet end of the transition pipe 6, and the oil outlet end of the transition pipe 6 is connected to the oil inlet of the detection device 3. 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 as 4mm. Figure 2 The diagram shown is a schematic diagram of the connection between the second defoaming tube, the first defoaming tube, and the transition tube in this embodiment.

[0046] In this embodiment, the first defoaming pipe 1, the second defoaming pipe, and the transition pipe 6 are all spiral-shaped inner pipes. These spiral-shaped inner pipes are formed on the annular body 7, which is fitted around the outside of the oil pump 2 and fixed to the pump assembly. Figure 3 The diagram shows the structure of the annular body 7. The upper end of the annular body 7 has an annular oil inlet 701, which connects to the oil inlet end of the second defoaming pipe 5. The lower end of the annular body 7 has an annular oil outlet 702, which connects to the detection device 3. It should be noted that fixing the annular body 7 to the pump assembly saves installation space for the defoamer.

[0047] In this embodiment, the oil inlet end of the first defoaming pipe 1 is connected to the oil outlet end of the second defoaming pipe 5, and the oil outlet 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 it 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 outlet end of the single pipe is connected to the first defoaming pipe 1. If the second defoaming pipe 5 is composed of several pipe segments connected in series, the first pipe segment of the second defoaming pipe 5 is connected to the oil pump outlet 201, and the last pipe segment of the second defoaming pipe 5 is connected to the first defoaming pipe 1. The diameter of the second defoaming pipe 5 decreases along the direction of oil flow, that is, the diameter of the second defoaming pipe 5 decreases segment by segment. If the second defoaming pipe 5 is composed of several pipe segments connected in series, the diameter of the last pipe segment 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 outlet end of the first defoaming pipe 1, and the oil outlet 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 segments connected in series, the first segment of the transition pipe 6 is connected to the first defoaming pipe 1, and the last segment of the transition pipe 6 is connected to the detection device 3. Furthermore, the diameter of the transition pipe 6 increases along the oil flow direction, meaning the diameter of the transition pipe 6 increases segment by segment. If the transition pipe 6 is composed of several pipe segments connected in series, the diameter of the first segment 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 facilitate the 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 oil inlet diameter 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 defoaming pipe 5 and then enters the first defoaming pipe 1. Since the diameter of the second defoaming pipe 5 is smaller than the diameter of the oil pump outlet 201, and the diameter of the first defoaming pipe 1 is smaller than the diameter of the second defoaming pipe 5, the pressure loss during the oil flow process is gradually changed by utilizing the changes in the diameters of the oil pump outlet 201, the second defoaming pipe 5, and the first defoaming pipe 1. The pressure in the second defoaming pipe 5 and the first defoaming pipe 1 increases, and the bubbles gradually dissolve into the oil in the second defoaming pipe 5. The remaining bubbles further dissolve in the first defoaming pipe 1 as the flow time in the first defoaming 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 before being connected to the oil inlet of the detection device 3. During the flow process, the flow rate gradually slows down, so that the oil flows into the detection device smoothly without generating new bubbles. This also avoids sudden pressure changes and achieves a better bubble elimination effect.

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

[0054] In another form, the diameter of the transition pipe 6 of a single pipeline can change continuously 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 Embodiment 1, with the difference being that in this embodiment, the first defoaming pipe 1 is an integral pipe. The oil inlet end of the integral pipe is connected to the oil pump outlet 201, and the oil outlet end of the integral 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 outlet end of the integral pipe. The oil inlet end of the integral pipe is the oil inlet end of the first defoaming pipe 1, and the oil outlet end of the integral pipe is the oil outlet end of the first defoaming pipe 1. The pipe length of the integral pipe with a diameter between Φ1.5mm and Φ3.5mm is between 0.5m and 3m. In this embodiment, the length of the integral pipe with a diameter between Φ1.5mm and Φ3.5mm is 1.5m.

[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 inlet end of the integrated pipe of the defoamer. Since the pipe diameter gradually decreases from the inlet end to the outlet end of the integrated pipe, the pressure loss in the oil flow process can be gradually changed. At the same time, since the length of the integrated pipe is between 0.5m and 3m, the bubbles have enough time to re-integrate into the oil, thereby achieving the purpose of eliminating bubbles. Therefore, the bubbles in the oil discharged through the outlet end of the integrated pipe are basically eliminated, achieving a good bubble elimination effect.

[0058] Example 4:

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

[0060] It should be noted that in this embodiment, the number of bent segments is one or more, and the shape of the bent segments is U-shaped or V-shaped; if there are multiple bent segments, the multiple bent segments may or may not be connected. Figure 4The diagram shows a series of bends formed in the front half of the first defoaming tube.

[0061] If there are many air bubbles in the oil discharged from the oil pump outlet 201, the large air bubbles will be broken into smaller air bubbles after passing through several connected U-shaped bends. The smaller air bubbles will then enter the first defoaming pipe 1. Since the maximum diameter of the first defoaming pipe 1 is smaller than the diameter of the oil pump outlet 201, the pressure of the oil flow process is changed by using the change in the diameter of the oil pump outlet 201 and the first defoaming pipe 1. This increases the pressure in the first defoaming pipe 1. Under increased pressure, the smaller air bubbles are more likely to dissolve into the oil. Therefore, setting several connected U-shaped bends can achieve a better air bubble elimination effect.

[0062] Example 5:

[0063] This embodiment is based on embodiment 2, except 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 piece 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, as Figure 5 The diagram shows the first defoaming pipe, the second defoaming pipe, and the transition pipe spirally coiled around the outer periphery of the oil pump. Spiraling the first defoaming pipe, the second defoaming pipe, and the transition pipe around the outer periphery of the oil pump can save installation space for the defoamer.

[0065] Example 6:

[0066] This embodiment is based on Embodiment 2, but differs in that, in this embodiment, if only a second defoaming pipe 5 is added between the first defoaming pipe 1 and the oil pump outlet 201, then the first defoaming pipe 1 and the second defoaming pipe 5 are encapsulated inside the housing 8; if both the second defoaming pipe 5 and the first defoaming pipe 1 are added between the first defoaming pipe 1 and the oil pump outlet 201, and a transition pipe 6 is added between the first defoaming pipe 1 and the detection device 3, then the first defoaming pipe 1, the second defoaming pipe 5, and the transition pipe 6 are all encapsulated inside the housing 8. Figure 6 The diagram shows a first defoaming tube 1, a second defoaming tube 5, and a transition tube 6 all encapsulated inside a housing 8.

[0067] The housing 8 has a first through hole that allows the oil inlet end of the second defoaming pipe 5 to pass through, and the housing 8 also has a second through hole that allows the oil outlet end of the first defoaming pipe 1 to pass through. The housing 8 has a detachable structure that makes it easy to remove the first defoaming pipe 1 placed inside it. Placing the first defoaming pipe 1 inside the housing 8 can prevent the first defoaming pipe 1 from being deformed by external forces. At the same time, the defoamer can be used as an independent component.

[0068] Example 7:

[0069] This embodiment is based on embodiment 2, except that in this embodiment, a button check valve can be provided at the oil pump outlet 201, or a button check valve can be provided between the second defoaming pipe 5 and the first defoaming pipe 1, or a button check valve can be provided at both the oil pump outlet 201 and between the second defoaming pipe 5 and the first defoaming pipe 1.

[0070] In this embodiment, the button check valve can be positioned in three ways: 1. Only one button check valve is installed at the oil pump outlet; 2. Only one button check valve is installed between the second defoaming pipe and the first defoaming pipe; 3. One button check valve is installed both at the oil pump outlet and between the second and first defoaming pipes. Figure 7 The diagram shows a button check valve installed in two different locations.

[0071] In this embodiment, a button check valve is used to break down large bubbles into smaller bubbles, while increasing the pressure to facilitate faster dissolution of the bubbles into the oil, thus enhancing the defoaming effect. When the oil is of high viscosity, the effect of adding the button check valve to assist in eliminating bubbles is more obvious. Adding the button check valve can shorten the length of the first defoaming tube 1.

[0072] Example 8:

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

[0074] like Figure 8 The diagram shows two defoaming grids 10 connected in series in the front half of the first defoaming pipe 1 in this embodiment. The cross-section of the defoaming grid 10 can be parallel to the cross-section of the first defoaming pipe 1, or it can be non-parallel to the cross-section of the first defoaming pipe 1. If there are multiple defoaming grids 10, the grid bars 1001 of two adjacent defoaming grids 10 form an angle. In this embodiment, the grid bars 1001 of two adjacent defoaming grids 10 form a 90° angle. Figure 9 The diagram shown 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 air bubbles in the oil into smaller air bubbles. Multiple defoaming grids 10 are set at a certain angle to improve the cutting effect on large air bubbles in the oil. The defoaming grid 10 is connected in series in the first half of the first defoaming pipe 1, so that large air bubbles in the oil are cut into smaller air bubbles in the first half of the first defoaming pipe 1. The smaller air bubbles enter the second half of the first defoaming pipe 1. Since the smaller air bubbles are more easily incorporated into the oil, the defoaming grid 10 achieves a better bubble elimination effect. Setting multiple parallel grid bars 1001 on the cross-section of the defoaming grid 10 further improves the bubble cutting effect. The grid bars 1001 of the defoaming grid 10 have a certain spacing, which can be determined according to the size of the abrasive particles generated during the use of the oil pump 2, ensuring that the abrasive particles can pass through the grid bars 1001 of the defoaming grid 10 normally, making the defoamer less prone to clogging and improving its service life.

[0076] In summary, the present invention provides an oil defoamer for monitoring oil, which has a simple structure and eliminates bubbles by allowing them to dissolve into the oil. It is also low in manufacturing cost and easy to use.

Claims

1. A defoamer for oil monitoring, characterized in that, It includes a first defoaming tube, the oil inlet of which is connected to the oil outlet of the oil pump, and the oil outlet of which is connected to the oil inlet of the detection device. The maximum diameter of the first defoaming tube is smaller than the diameter of the oil outlet of the oil pump. 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 as described in claim 1, characterized in that, It also includes a second defoaming pipe, the oil inlet of which is connected to the oil outlet of the oil pump, and the oil outlet of which is connected to the oil inlet 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 as described in 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 outlet end of the integrated pipe is connected to the oil inlet of the detection device. The pipe diameter gradually decreases from the oil inlet end to the oil outlet end of the integrated pipe.

4. The defoamer for oil monitoring as described in claim 1, characterized in that, One or more bends are formed on the front half of the first defoaming tube.

5. A defoamer for oil monitoring as described in any one of claims 1 to 4, characterized in that, The oil pump is a spherical pump, and the spherical pump and the motor used to drive the spherical pump to rotate form a pump assembly.

6. The defoamer for oil monitoring as described in claim 5, characterized in that, The first defoaming tube is spirally coiled around the outer periphery of the oil pump.

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

8. The defoamer for oil monitoring as described in claim 2, characterized in that, Both the first defoaming tube and the second defoaming tube are spirally coiled around the outer periphery of the oil pump.

9. The defoamer for oil monitoring as described in claim 2, characterized in that, Both the first defoaming pipe and the second defoaming pipe are spiral-shaped inner pipes, which are opened on a circular ring, and the circular ring is fitted around the outer periphery of the oil pump.

10. The defoamer for oil monitoring as described in claim 2, characterized in that, It also includes a transition pipe, wherein 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 greater than the maximum diameter of the first defoaming pipe.

11. The defoamer for oil monitoring as described in claim 2, characterized in that, The first defoaming tube and the second defoaming tube are encapsulated inside the housing.

12. The defoamer for oil monitoring as described in claim 2, characterized in that, A button-type check valve is provided at the oil pump outlet, or a button-type check valve is provided between the second defoaming pipe and the first defoaming pipe, or a button-type check valve is provided at both the oil pump outlet and between the second defoaming pipe and the first defoaming pipe.

13. The defoamer for oil monitoring as described in claim 1, characterized in that, One or more defoaming grids are connected in series in the first half of the defoaming pipe. Multiple parallel grid bars are provided on the flow cross section of the defoaming grid. If there are multiple defoaming grids, the grid bars of two adjacent defoaming grids are at an angle.

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