Pressurized lubricating oil sampling device
Patent Information
- Application Number
- CN202522401034.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-12
AI Technical Summary
这种取样方式在将取样管内的油样倒入取样瓶中时，由于采样管本身较长，取样人员要在保证用手指将采样管一端封闭的状态下，还要将采样管另一端对准取样瓶，操作起来难度偏高，且很不方便
本申请的取样设备在使用时，在取样人员将油桶桶口的盖子拧开后，先将本申请的取样管插入油桶，再在油桶桶口处通过操作泵吸头内的抽吸单元，利用抽吸单元的抽吸力可持续将油桶内的油样从泵吸头一侧的取样口输出，基于此取样人员只需提前将取样瓶放置在泵吸头的取样口处，便可从泵吸头的取样口处轻松获取到待检测的润滑油油样。相较于现有技术，取样人员在使用本申请的取样设备获取油样时，操作起来简单方便，且更加省力。
Smart Images
Figure CN224861359U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing tools, and in particular to a press-type lubricating oil sampling device. Background Technology
[0002] Proper sampling of drummed lubricating oil is crucial for ensuring accurate and reliable oil analysis results. A common sampling method involves the sampler opening the drum lid, thoroughly wiping away dust and impurities around the lid with a clean cloth, and then slowly and vertically inserting a pre-prepared sampling tube (usually a long, thin, clean, and dry glass tube) into the bottom of the drum from the opening. The sampler then blocks the upper end of the tube with a finger and lifts it upwards. Atmospheric pressure prevents the lubricating oil from escaping the sampling tube. Once the tube is fully removed from the drum, the sampler should maintain an elevated position to allow the lower end of the tube to be easily inserted into the sampling bottle. After releasing the finger, the oil sample will automatically flow into the sampling bottle, typically filling it about 3 / 4 full. This sampling method is quite difficult and inconvenient. When pouring the oil sample from the sampling tube into the sampling bottle, the sampling tube itself is quite long. The sampling personnel must ensure that one end of the sampling tube is sealed with their fingers, while also aligning the other end of the sampling tube with the sampling bottle. Utility Model Content
[0003] This application provides a press-type lubricating oil sampling device, which can improve the convenience for sampling personnel when obtaining lubricating oil samples from oil drums.
[0004] The above-mentioned objective of this application is achieved through the following technical solution: A press-type lubricating oil sampling device includes a pump suction head, the pump suction head having a hollow internal structure, a sampling port on one side of the upper end of the pump suction head, and a liquid inlet at the lower end of the pump suction head. Both the liquid inlet and the sampling port are connected to the internal space of the pump suction head. A sampling tube is installed at the inlet of the pump suction head; the sampling tube is used to transport the oil sample in the oil tank to be sampled into the pump suction head. The pump head is equipped with a suction unit inside, which can output the oil sample inside the pump head from the sampling port by operating inside the pump head.
[0005] Furthermore, a first check valve is installed inside the lower end of the pump suction head, and the first check valve only allows oil or gas to flow from bottom to top inside the pump suction head.
[0006] Furthermore, the suction unit includes a pressing push rod, which is inserted into a through hole in the center of the pump head top cover, and there is a gap between the pressing push rod and the through hole in the center of the pump head top cover; The push rod is fixedly connected to a plug at one end inside the pump suction head. The upper end of the plug has multiple liquid outlet holes in the circumferential direction. A rubber plug ring is fixedly installed on the outer side of the lower end of the plug. Under normal conditions, the outer wall of the rubber plug ring is in close contact with the inner wall of the pump suction head. A second check valve is installed inside the lower end of the plug, which allows oil or gas to flow from bottom to top only when the plug moves within the pump suction head.
[0007] Furthermore, an elastic component is installed on the portion of the pressing push rod located on the outer side of the pump suction head top cover.
[0008] Furthermore, the elastic component includes a lower mounting groove fixedly disposed outside the central through hole of the pump suction head top cover and an upper cover fixedly connected to the push rod body. A spring is provided between the lower mounting groove and the upper cover. The upper end of the spring is fixedly connected to the upper cover, and the lower end of the spring is fixedly connected to the pump suction head top cover in the lower mounting groove.
[0009] Furthermore, a snap-fit assembly is provided on the outer side of the lower end of the pump suction head, which can snap onto the mouth of the oil drum when sampling.
[0010] Furthermore, the snap-fit assembly includes a first annular fixing plate, which is fixedly connected to the outer wall of the pump suction head. A second annular fixing plate is connected to the lower side of the first annular fixing plate through multiple fasteners. The side of the second annular fixing plate away from the sampling port is designed to be open.
[0011] In summary, this application includes at least one of the following beneficial technical effects: When using the sampling device of this application, after the sampling personnel unscrew the cap of the oil drum, they first insert the sampling tube of this application into the oil drum. Then, by operating the suction unit inside the pump head at the mouth of the oil drum, the suction force of the suction unit continuously outputs the oil sample from the sampling port on one side of the pump head. Based on this, the sampling personnel only need to place the sampling bottle at the sampling port of the pump head in advance to easily obtain the lubricating oil sample to be tested from the sampling port of the pump head. Compared with the prior art, the sampling personnel are simpler, more convenient, and less labor-intensive when using the sampling device of this application to obtain oil samples. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram showing the state of the sample taken from the lubricating oil drum in this application; Figure 3 This is a cross-sectional view of the opening of an oil drum in the prior art; Figure 4 This is a cross-sectional view taken from the lubricating oil drum in this application; Figure 5 yes Figure 4 A magnified structural diagram of point A in the middle.
[0014] Reference numerals: 1. Pump suction head; 2. Sampling port; 3. Liquid inlet; 4. Sampling tube; 5. Suction unit; 51. Pressing rod; 52. Plug; 53. Liquid outlet hole; 54. Rubber plug ring; 55. Second check valve; 6. First check valve; 7. Elastic component; 71. Lower mounting groove; 72. Upper cover; 73. Spring; 8. Snap-fit component; 81. First annular fixing plate; 82. Fixing component; 83. Second annular fixing plate; 9. Oil drum; 10. Drum opening. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.
[0016] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, this application discloses a press-type lubricating oil sampling device, which includes a pump head 1. The pump head 1 has a hollow internal structure. A sampling port 2 is provided on one side of the upper end of the pump head 1, and a liquid inlet 3 is provided at the lower end of the pump head 1. Both the liquid inlet 3 and the sampling port 2 are connected to the internal space of the pump head 1. A sampling tube 4 is installed at the inlet 3 of the pump suction head 1; the sampling tube 4 is used to transport the oil sample in the oil tank 9 to be sampled into the pump suction head 1. The pump suction head 1 is equipped with a suction unit 5 inside. The suction unit 5 can output the oil sample inside the pump suction head 1 from the sampling port 2 by operating inside the pump suction head 1.
[0017] In the above embodiments, the pump head 1 of this application has a hollow internal structure. When the suction unit 5 inside the pump head 1 is activated, it can generate suction force inside the pump head 1, thereby using the sampling tube 4 connected to the inlet 3 of the pump head 1 to draw the oil sample from the oil tank 9 into the pump head 1. At this time, the internal space of the pump head 1 can provide a temporary storage function for the oil sample. With the continuous operation of the pump head 1, when the oil sample inside the pump head 1 reaches the sampling port 2, it can be automatically discharged from the sampling port 2 (the sampling port 2 of this application can be designed as a downwardly curved arc-shaped tube section, which helps the oil sample to be discharged more smoothly after entering the structure of the sampling port 2). The sampling tube 4 of this application can be made of the same transparent glass material as the conventional sampling tube 4, or a more flexible transparent flexible tube can be selected. Users can choose according to their actual needs in actual use.
[0018] When using the sampling device of this application, after inserting the sampling tube 4 into the oil drum 9 containing the lubricating oil sample, the sampling personnel only need to operate the suction unit 5 at the mouth 10 of the oil drum 9 to allow the oil sample in the oil drum 9 to automatically flow out from the sampling port 2. The sampling port 2 and the suction unit 5 are relatively close, and the sampling personnel can operate the suction unit 5 with one hand while using the sampling bottle to obtain the oil sample from the sampling port 2 with the other hand, which is more convenient and comfortable compared to the traditional sampling method. Moreover, the amount of oil sample is easier to control during the sampling process.
[0019] Furthermore, such as Figure 4 and Figure 5 As shown, a first check valve 6 is installed inside the lower end of the pump suction head 1, and the first check valve 6 only allows oil or gas to flow from bottom to top inside the pump suction head 1.
[0020] In the above embodiments, a first one-way valve 6 is provided inside the pump suction head 1 near its inlet 3. When in use, the first one-way valve 6 only allows the oil sample to flow from the inlet 3 side to the suction unit 5 side. This ensures that when the suction unit 5 is working, the oil sample can be temporarily stored in the space above the first one-way valve 6 inside the pump suction head 1, thus providing a basis for the oil sample to be discharged from the sampling port 2.
[0021] Furthermore, such as Figure 4 and Figure 5 As shown, the suction unit 5 includes a pressing push rod 51, which is inserted into the through hole in the center of the top cover of the pump suction head 1, and there is a gap between the pressing push rod 51 and the through hole in the center of the top cover of the pump suction head 1. The end of the push rod 51 located inside the pump suction head 1 is fixedly connected to a plug 52. The upper end of the plug 52 is provided with multiple liquid outlet holes 53 in the circumferential direction. A rubber plug ring 54 is fixedly installed on the outer side of the lower end of the plug 52. Under normal conditions, the outer wall of the rubber plug ring 54 is in close contact with the inner wall of the pump suction head 1. A second check valve 55 is installed inside the lower end of the plug 52. The second check valve 55 allows oil or gas to flow from bottom to top only when the plug 52 moves inside the pump suction head 1.
[0022] In the above embodiments, the lower end of the push rod 51 of this application is inserted into the through hole in the top cover of the pump suction head 1 and connected to the plug 52 inside the pump suction head 1. The plug 52 is a cylindrical structure with the upper end closed. There are two liquid outlet holes 53 on the plug 52, and they are symmetrically distributed on the plug 52. In this way, the oil sample below the plug 52 can flow evenly from the two liquid outlet holes 53 to the top of the plug 52.
[0023] A rubber stopper ring 54 is fixedly provided on the outer side of the stopper 52 of this application. The rubber stopper ring 54 can flexibly fill the gap between the stopper 52 and the inner wall of the pump suction head 1, so that the effect of the stopper 52 moving in the pump suction head 1 is similar to the movement effect of the rubber injection head in a syringe. A second one-way valve 55 is installed inside the lower end of the stopper 52. The second one-way valve 55 also allows oil or gas to flow from bottom to top only when in use.
[0024] When the sampling personnel press the push rod 51 from top to bottom for the first time, the push rod 51 moves the plug 52 downward. The plug 52 will squeeze the air in the pump suction head 1 below it and move it downward. The first one-way valve 6 only allows air and oil sample to flow from bottom to top. Therefore, the first one-way valve 6 will be in a closed state during this process. In this way, the air between the plug 52 and the first one-way valve 6 will be compressed and a pressure difference will be generated with the external atmospheric pressure. At the same time, the second one-way valve 55 on the plug 52, which also only allows air and oil sample to flow from bottom to top, is located above this part of compressed air. Under the action of atmospheric pressure, this part of compressed air will automatically push open the second one-way valve 55, so that it can be discharged through the liquid outlet hole 53 on the plug 52. As the air between the plug 52 and the first one-way valve 6 continues to be discharged, the plug 52 can also smoothly complete the downward pressing action in the pump suction head 1.
[0025] After the sampling personnel complete the operation of pressing down the push rod 51, they can pull it up again. During the process of lifting the plug 52 along with the push rod 51, the space between the plug 52 and the first one-way valve 6 continuously increases, while the amount of gas between them remains constant. This causes the pressure between the first one-way valve 6 and the plug 52 to be lower than the external atmospheric pressure. The space between the first one-way valve 6 and the plug 52 will generate an inward suction force. The valve covers of both the second one-way valve 55 and the first one-way valve 6 can only open upwards. The opening direction of the second one-way valve 55 is opposite to the direction of the suction force. The second one-way valve 55 will keep the stopper 52 in a closed state. The opening direction of the valve cover of the first one-way valve 6 is in the same direction as the suction force. Therefore, the first one-way valve 6 will be opened during the process of the stopper 52 moving upward. At the same time, the sampling tube 4 connected to the liquid inlet 3 on the lower side of the first one-way valve 6 will be in communication with the space of the pump suction head 1 on the lower side of the stopper 52. During the process of the sampling personnel continuously lifting and pressing the push rod 51, the lubricating oil sample in the oil drum 9 will be continuously drawn into the pump suction head 1 through the sampling tube 4. The principle of this process is the same as the principle of liquid extraction by a syringe.
[0026] After the push rod 51 is lifted, the sampling personnel can press down the push rod 51. At this time, the space between the plug 52 and the first one-way valve 6 is mainly filled with lubricating oil from the oil drum 9. Therefore, during the process of pressing down the push rod 51, the lubricating oil below the plug 52 will continuously overflow upward from the second one-way valve 55 and the liquid outlet 53 (the relevant principle can be found in the principle of gas flow between the plug 52 and the first one-way valve 6 when the sampling personnel first press down the push rod 51 mentioned above). After the sampling personnel completes this operation of pressing down the push rod 51, a certain amount of lubricating oil will remain in the space above the plug 52. When the sampling personnel lift the push rod 51 again, the plug 52 will push the oil sample on its upper side upward while extracting the lubricating oil. When the oil sample on the upper side of the plug 52 reaches the height of the liquid inlet 3, it will automatically be discharged from the liquid inlet 3 of the pump suction head 1, thus completing one lubricating oil sampling operation.
[0027] As long as the sampling personnel continue to repeat the above operation, the lubricating oil in the oil drum 9 can be continuously discharged from the sampling port 2. Compared with the traditional method of sampling personnel taking an oil sample from the oil drum 9 with a long glass tube, the sampling method of this application is obviously simpler and the sampling amount is easier to control.
[0028] Furthermore, such as Figure 1 , 2 and Figure 5 As shown, the push rod 51 is equipped with an elastic component 7 on the outer part of the top cover of the pump suction head 1.
[0029] In the above embodiments, the elastic component 7 can provide assistance to the sampling personnel during the upward lifting of the push rod 51.
[0030] Furthermore, such as Figure 4 and Figure 5 As shown, the elastic component 7 includes a lower mounting groove 71 fixedly disposed outside the central through hole of the top cover of the pump suction head 1 and an upper cover 72 fixedly connected to the body of the pressing push rod 51. A spring 73 is provided between the lower mounting groove 71 and the upper cover 72. The upper end of the spring 73 is fixedly connected to the upper cover 72, and the lower end of the spring 73 is fixedly connected to the top cover of the pump suction head 1 in the lower mounting groove 71.
[0031] In the above embodiments, the spring 73, which is arranged on the push rod 51 in the manner described above, can buffer the force of the sampler's hand when the sampler presses down on the push rod 51, making the pressing process smoother. The spring 73 will also deform during this process to generate elastic force. When the sampler needs to lift the push rod 51 later (when pressing down, ordinary people can consciously tilt their bodies slightly to transfer some of their weight to the movement, thus making their arms and shoulders less strained. However, when lifting an object, they need to use their own muscle strength to resist, so ordinary people often find it more strenuous to lift than to press), the elastic force of the spring 73 can be gradually released to assist the sampler in exerting force, making it easier for the sampler to lift the push rod 51 with less effort.
[0032] Furthermore, such as Figure 1 , Figure 2 and Figure 5 As shown, a snap-fit component 8 is provided on the outer side of the lower end of the pump suction head 1. The snap-fit component 8 can be snapped into the mouth 10 of the oil drum 9 when sampling is performed on the oil drum 9.
[0033] In the above embodiments, the pump suction head 1 is secured to the opening 10 of the oil drum 9 by the snap-fit assembly 8. This prevents the pump suction head 1 from moving upwards along with the sampling personnel when they lift and press the push rod 51, thus avoiding affecting the actual use effect.
[0034] Furthermore, such as Figure 1 , Figure 2 and Figure 5 As shown, the snap-fit assembly 8 includes a first annular fixing plate 81, which is fixedly connected to the outer wall of the pump suction head 1. The lower side of the first annular fixing plate 81 is connected to a second annular fixing plate 83 through multiple fasteners 82. The side of the second annular fixing plate 83 away from the sampling port 2 is designed to be open.
[0035] In the above embodiments, such as Figure 3As shown, the shape of the mouth 10 of the oil drum 9 is similar to the mouth of a wide-mouth bottle, meaning the upper part of the mouth 10 of the oil drum 9 is larger than its middle area. The inner diameter of the second annular fixing plate 83 is larger than the diameter of the middle area of the mouth 10 of the oil drum 9, but smaller than the diameter of its upper end. The width of the open side of the second annular fixing plate 83 is not less than the diameter of the middle area of the mouth 10 of the oil drum 9. This allows the sampling personnel to insert the open side of the second annular fixing plate 83 to the outside of the mouth 10 of the oil drum 9 before sampling. Then, they can rotate the entire device around the axis of the mouth 10 of the oil drum 9 until the sampling port 2 of the pump suction head 1 faces the outside of the oil drum 9, and the open end of the second annular fixing plate 83 faces the center of the oil drum 9. Thus, when the sampling personnel lift and press the push rod 51, the mouth 10 of the oil drum 9 can use its limiting effect on the second annular fixing plate 83 to prevent it from moving along with the push rod 51, improving the convenience of use.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A press-type lubricating oil sampling device, characterized in that: Includes a pump suction head (1), the inside of which is a hollow structure. A sampling port (2) is provided on one side of the upper end of the pump suction head (1), and a liquid inlet (3) is provided at the lower end of the pump suction head (1). The liquid inlet (3) and the sampling port (2) are both connected to the internal space of the pump suction head (1). A sampling tube (4) is installed at the inlet (3) of the pump suction head (1); the sampling tube (4) is used to transport the oil sample in the oil tank (9) to be sampled into the pump suction head (1); The pump suction head (1) is equipped with a suction unit (5) inside. The suction unit (5) can output the oil sample in the pump suction head (1) from the sampling port (2) by operating inside the pump suction head (1).
2. The press-type lubricating oil sampling device according to claim 1, characterized in that: The lower end of the pump suction head (1) is equipped with a first check valve (6), and the first check valve (6) allows oil or gas to flow from bottom to top within the pump suction head (1).
3. The press-type lubricating oil sampling device according to claim 2, characterized in that: The suction unit (5) includes a pressing push rod (51), which is inserted into the through hole at the center of the top cover of the pump suction head (1), and there is a gap between the pressing push rod (51) and the through hole at the center of the top cover of the pump suction head (1); The push rod (51) is fixedly connected to a plug (52) at one end inside the pump suction head (1). The upper end of the plug (52) is provided with a plurality of liquid outlet holes (53) in the circumferential direction. A rubber plug ring (54) is fixedly installed on the outer side of the lower end of the plug (52). Under normal conditions, the outer wall of the rubber plug ring (54) is in close contact with the inner wall of the pump suction head (1). A second check valve (55) is installed inside the lower end of the plug (52), which allows oil or gas to flow from bottom to top only when the plug (52) moves within the pump suction head (1).
4. The press-type lubricating oil sampling device according to claim 3, characterized in that: The pressing push rod (51) is equipped with an elastic component (7) on the part located outside the top cover of the pump suction head (1).
5. The press-type lubricating oil sampling device according to claim 4, characterized in that: The elastic component (7) includes a lower mounting groove (71) fixed outside the central through hole of the top cover of the pump suction head (1) and an upper cover (72) fixedly connected to the rod body of the pressing push rod (51). A spring (73) is provided between the lower mounting groove (71) and the upper cover (72). The upper end of the spring (73) is fixedly connected to the upper cover (72), and the lower end of the spring (73) is fixedly connected to the top cover of the pump suction head (1) in the lower mounting groove (71).
6. The press-type lubricating oil sampling device according to any one of claims 1 to 5, characterized in that: The pump suction head (1) has a snap-fit assembly (8) on the outer side of its lower end. The snap-fit assembly (8) can be snapped into the mouth (10) of the oil drum (9) when taking samples from the oil drum (9).
7. The press-type lubricating oil sampling device according to claim 6, characterized in that: The snap-fit assembly (8) includes a first annular fixing plate (81), which is fixedly connected to the outer wall of the pump suction head (1). The lower side of the first annular fixing plate (81) is connected to a second annular fixing plate (83) through multiple fasteners (82). The side of the second annular fixing plate (83) away from the sampling port (2) is designed to be open.