Lubricating oil detecting and sampling device capable of being controlled in positioning mode

Abstract

Compared with the prior art, the lubricating oil detecting and sampling device capable of being positioned and controlled disclosed by the utility model has the following beneficial effects that in an actual sampling process, one end of the rigid sampling pipe is connected with the flexible suction pipe, and then the rigid sampling pipe extends into a certain distance according to the sampling depth; the lubricating oil sampling device comprises a negative pressure suction device and a flexible suction pipe connected with the negative pressure suction device, and further comprises a positioning and sampling assembly, the positioning and sampling assembly comprises a positioning piece and a sampling piece, the positioning piece comprises a threaded part used for being in threaded connection with an opening of an oil drum, and the positioning piece comprises a threaded part used for being in threaded connection with the opening of the oil drum; the guide channel and the thread part are coaxially arranged on the positioning piece; the rigid sampling tube is in sliding guide fit with the guide channel, and the upper end part of the rigid sampling tube is connected with the flexible suction tube.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricating oil sampling devices, in particular to a lubricating oil detection sampling device capable of position control. Background Art

[0002] Lubricating oil is a commonly used medium for mechanical equipment. It can achieve the effects of lubrication, rust prevention and cooling. The most important properties of lubricating oil include viscosity, oxidation stability and lubricity. Different usage conditions have different usage indicators. Therefore, in order to ensure the performance of lubricating oil, it is necessary to conduct random inspections of lubricating oil.

[0003] At present, a special sampling device is used for sampling of lubricating oil. The current sampling method is to insert a sampling tube into a barrel containing the lubricating oil for sampling. Since the sampling tube is a flexible plastic tube, it is not convenient to control the insertion depth of the plastic tube after inserting it into the barrel. It is not convenient to sample lubricating oil at different depths in the barrel, which will affect the random inspection of the barreled lubricating oil after production, thereby affecting the comprehensive sampling inspection. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a lubricating oil detection sampling device that can be positioned and controlled.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a lubricating oil detection sampling device with positionable control includes a negative pressure suction device and a flexible suction tube connected to the negative pressure suction device, and also includes a positioning sampling component, which includes:

[0006] The positioning member includes a threaded portion for threaded connection with the mouth of the oil barrel;

[0007] A guide channel is coaxially arranged on the positioning member with the threaded portion;

[0008] The rigid sampling tube is slidably matched with the guide channel, and the upper end portion is connected with the flexible suction tube.

[0009] Furthermore, a column is integrally provided on a surface of the positioning member opposite to the threaded portion, the guide channel is provided through the column, and a locking rod is threadedly connected to the side wall of the column.

[0010] Furthermore, the positioning member is a circular plate, a cylinder is coaxially arranged on the first surface of the circular plate, the threaded portion is arranged on the circumferential surface of the cylinder, a second column is also coaxially arranged on the first surface with the cylinder, and the guide channel passes through the second column.

[0011] Furthermore, a plug-in end is provided at one end of the rigid sampling tube, and a plug-in channel for plugging with the plug-in end is provided on the inner circumference of the other end.

[0012] Furthermore, the end of the flexible suction tube is also connected to a one-way valve, and the one-way valve includes a second plug-in channel that is plug-matched with the plug-in end.

[0013] Furthermore, the one-way valve includes a valve body and a valve cover threadedly connected to the upper end of the valve body. A valve cavity is provided in the valve body and is coaxially arranged and connected to the second plug-in channel. A first valve ball is provided in the valve cavity. A connecting sleeve is provided on the valve cover and is sleeved with the flexible suction tube.

[0014] Furthermore, the other end of the flexible suction tube is connected to a quick connector.

[0015] The positionable and controllable lubricating oil detection sampling device disclosed by the utility model has the following beneficial effects compared with the prior art: in the actual sampling process, one end of the rigid sampling tube is connected to the flexible suction tube, and then the rigid sampling tube is extended a certain distance according to the sampling depth, so that the lubricating oil of the predetermined depth can be sampled, thereby achieving the effect of positioned sampling. The utility model includes a negative pressure suction device and a flexible suction tube connected to the negative pressure suction device, and also includes a positioning sampling assembly. The positioning sampling assembly includes: a positioning member, including a threaded portion for threaded connection with the mouth of the oil barrel; a guide channel, which is coaxially arranged on the positioning member with the threaded portion; a rigid sampling tube, which is slidingly guided by the guide channel, and the upper end portion is connected to the flexible suction tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the positionable and controllable lubricating oil detection and sampling device of the utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the sampling component in the positioning controllable lubricating oil detection sampling device of the utility model. Figure 1 .

[0018] Figure 3 This is a schematic diagram of the structure of the sampling component in the positioning controllable lubricating oil detection sampling device of the utility model. Figure 2 .

[0019] Figure 4 This is a structural diagram of a one-way valve in the positionable and controllable lubricating oil detection sampling device of the utility model.

[0020] Figure 5 This is a schematic cross-sectional structural diagram of a one-way valve in the positionable and controllable lubricating oil detection and sampling device of the utility model.

[0021] Figure 6 This is a schematic structural diagram of a sampling tube in the positionable and controllable lubricating oil detection sampling device of the present invention.

[0022] Figure 7This is a structural schematic diagram of the negative pressure suction device in the positionable and controllable lubricating oil detection sampling device of the utility model.

[0023] Figure 8 This is a schematic cross-sectional structural diagram of the negative pressure suction device in the positionable and controllable lubricating oil detection and sampling device of the utility model.

[0024] Figure 9 This is a schematic structural diagram of the main body of the negative pressure suction device in the positionable and controllable lubricating oil detection and sampling device of the utility model.

[0025] Figure 10 for Figure 9 The diagram shows a partially enlarged structural diagram of point A in the positionable and controllable lubricating oil detection sampling device of the present invention.

[0026] Figure 11 for Figure 9 The diagram shown is a partial enlarged structural diagram of point B in the positionable and controllable lubricating oil detection sampling device of the present invention.

[0027] In the figure: 1. Negative pressure suction device; 10. Main body; 101. First flow channel; 102. Second one-way valve; 1020. Second valve slit; 1021. Second valve ball; 1022. First retaining spring; 103. Third one-way valve; 1030. Third valve slit; 1031. Valve cover; 1032. Third valve ball; 1033. Second retaining spring; 11. Quick-connect connector; 110. Second flow channel; 12. Suction cylinder; 120. Piston; 121. Cylinder body; 123. Pull rod; 13. Sampling bottle;

[0028] 2. Flexible suction tube; 3. Positioning sampling assembly; 30. Positioning piece; 301. Threaded portion; 302. Cylinder; 31. Rigid sampling tube; 311. Connecting end; 312. Connecting channel; 32. One-way valve; 321. Valve body; 320. Valve cover; 3201. Connecting sleeve; 322. First valve ball; 323. Second connecting sleeve; 3230. Second connecting channel; 326. Guide groove; 33. Second cylinder; 34. Locking rod. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner, and thus only show components related to the present invention.

[0030] Please refer to Figure 1-5 To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a lubricating oil detection sampling device with positionable control includes a negative pressure suction device 1 and a flexible suction tube 2 connected to the negative pressure suction device, and also includes a positioning sampling component 3, which includes:

[0031] The positioning member 30 includes a threaded portion 301 for threaded connection with the mouth of the oil barrel;

[0032] A guide channel is coaxially arranged on the positioning member 30 with the threaded portion;

[0033] The rigid sampling tube 31 is slidably guided in the guide channel, and the upper end portion is connected to the flexible suction tube 2 .

[0034] Specifically, refer to Figures 1-6 The function of the negative pressure suction device 1 is to provide suction force for the flexible suction tube to achieve the effect of sucking lubricating oil. Generally, the sampling is to sample the lubricating oil in the oil barrel. The top of the oil barrel is provided with an opening, and the opening is threadedly connected with a cover body. The cover body is removed for sampling. The sampling component provided by the present application includes a positioning sampling component 3, which includes a positioning member 30. A threaded portion 301 is provided on one surface of the positioning member. Generally, the threaded portion 301 is an external thread, which is adapted to the internal thread of the opening on the oil barrel, so that The positioning member 30 is threadedly connected to the positioning member 30, and a guide channel is provided on the positioning member 30 coaxially with the threaded portion 301. The rigid sampling tube 31 is a circular tube made of stainless steel. The outer circumference is slidably guided with the inner circumference of the guide channel. In the actual sampling process, one end of the rigid sampling tube 31 is connected to the flexible suction tube 2, and then the rigid sampling tube 31 is extended a certain distance according to the sampling depth. The distance can be measured by using tools such as a tape measure, so that the lubricating oil at a predetermined depth can be sampled to achieve the effect of positioning sampling.

[0035] Further, as a specific implementation method, refer to Figure 2 , Figure 3 The positioning member 30 is further integrally provided with a column 302 on the side opposite the threaded portion 301. The guide channel extends through the column 302, and a locking rod 34 is threadedly connected to the side wall of the column 302. Specifically, the column and positioning member 30 are integrally formed, the guide channel extends through the column 302, and a threaded hole (not shown) is provided on the side wall of the column, perpendicular to the axis of the guide channel and communicating with the guide channel. The locking rod 34 is threadedly connected to the threaded hole. Thus, by tightening and loosening the locking rod 34, the rigid sampling tube 31 can be positioned and released.

[0036] Furthermore, the positioning member 30 is a circular plate, a cylinder is coaxially arranged on the first surface of the circular plate, the threaded portion 301 is arranged on the circumference of the cylinder, a second column 33 is also coaxially arranged on the first surface with the cylinder, and a guide channel passes through the second column.

[0037] As a preferred embodiment, the positioning member 30 is a circular plate with anti-slip protrusions on the outer circumference. The circular plate is made of plastic material, and a cylindrical column 302 and a second column 33 are integrally formed on one side, and the threaded portion 301 is arranged on the outer circumference of the cylinder.

[0038] Furthermore, a plug end 311 is provided at one end of the rigid sampling tube 31 , and a plug channel for plugging with the plug end 311 is provided on the inner circumference of the other end.

[0039] Specifically, as a preferred embodiment, refer to Figure 6 One end of the rigid sampling tube is turned to form a plug-in end 311 with a reduced radius, and the other end is turned to form a plug-in channel 312 with an enlarged radius. The plug-in channel can be plugged into and matched with the plug-in end 311. In this way, multiple rigid sampling tubes can be plugged into and matched end to end according to the actual sampling depth, so as to achieve the effect of sampling oil at different depths.

[0040] In some embodiments, in order to ensure the firmness of the end-to-end fit of the rigid sampling tube, an external thread may be provided on the outer circumference of the plug-in end and an internal thread may be provided on the inner circumference of the plug-in channel to form a threaded fit.

[0041] Further, as a preferred embodiment, refer to Figure 3 The end of the flexible suction tube 2 is also connected to a one-way valve 32 , and the one-way valve 32 includes a second plug-in channel 3230 that is plugged into and matched with the plug-in end 311 . Specifically, the one-way valve 32 can achieve the effect of allowing the oil to flow to the negative pressure suction device 1 in one direction. The one-way valve is detachably connected to the upper end of the rigid sampling tube 31. After the sampling is completed, the rigid sampling tube 31 and the flexible suction tube 2 will be filled with oil. At this time, the one-way valve can be separated from the rigid sampling tube 31. Due to the one-way flow effect of the one-way valve, the oil in the flexible suction tube 2 will be prevented from flowing out. At this time, it is only necessary to operate the negative pressure suction device 1 again to suck the oil in the flexible suction tube 2 into the negative pressure suction device to reduce the spillage of oil. After the one-way valve is separated from the rigid sampling tube 31, the upper end of the rigid sampling tube 31 is opened. At this time, the rigid sampling tube 31 is pulled upward so that the lower end is placed in the guide channel. At this time, the oil in the rigid sampling tube 31 can flow out under the action of gravity, and then the positioning member 30 is separated from the oil barrel. This method can reduce the amount of oil spilled.

[0042] Further, as a specific embodiment, refer to Figure 4 、 Figure 5The one-way valve 32 includes a valve body 321 and a valve cover 320 threadedly connected to the upper end of the valve body. A valve cavity coaxially arranged and connected to the second plug-in channel 3230 is provided in the valve body, a first valve ball 322 is provided in the valve cavity, and a connecting sleeve 3201 that is sleeved and matched with the flexible suction tube 2 is provided on the valve cover 320. Specifically, the one-way valve 32 is in a vertical state when in use, and a second connecting sleeve 323 is provided at the lower end of the valve body 321, and a second plug-in channel 3230 is provided in the second connecting sleeve. The second plug-in channel can be plugged into and sealed with the plug-in end 311 at the upper end of the rigid sampling tube 31. The sealing method adopts the sealing method in the prior art, which is not specifically limited here. The valve cover 320 is threadedly connected to the valve body and sealed. A connecting sleeve 3201 is provided on the valve cover, and the connecting sleeve is connected to the flexible suction tube 2. A valve cavity that is sealed with the second plug-in channel is provided in the valve body, and the valve cavity is vertically arranged. A first valve ball is provided in the valve cavity, and the valve ball is in a Figure 5 In the state shown, the oil is prevented from flowing from top to bottom. A guide groove 326 is provided on the side wall of the valve cavity. When the flexible suction tube provides suction force, the first valve ball moves upward under the action of negative pressure, and the oil can flow upward from the guide groove 326.

[0043] Furthermore, as a preferred embodiment, the other end of the flexible suction tube 2 is connected to a quick connector 11 , which can be quickly connected to the negative pressure suction device 1 .

[0044] Specifically, refer to Figure 7-11The specific structure of the negative pressure suction device is as follows: it includes a body 10, a suction cylinder 12 and a sampling bottle 13, a first flow channel 101 is provided in the body, the suction cylinder 12 includes a cylinder 121, a piston 120 and a pull rod 123, the cylinder 121 is threadedly connected to the body and is connected to one end of the first flow channel, a second one-way valve 102 and a third one-way valve 103 are respectively provided on the upper and lower sides of the first flow channel, the second one-way valve includes a second valve groove 1020 connected to the first flow channel, and a quick connector 1 The quick-connect joint 1010 threadedly connected to the end of the second valve groove 1020 includes a second flow channel 110, a second valve ball 1021 and a first retaining spring 1022. Under the elastic force of the first retaining spring, the second valve ball abuts against the end of the second flow channel 110 to seal the end of the second flow channel. The third one-way valve includes a third valve groove 1030 connected to the first flow channel, a valve cover 1031 provided at the lower end of the third valve groove, a third valve ball 1032 and a second retaining spring 1033. Under the action of the elastic force of the holding spring, the third valve ball can be pressed against the end of the flow channel where the third valve groove is connected to the first flow channel to seal it. The sampling flat thread is connected to the main body and connected to the lower end of the third valve groove. During operation, the main body 10 is held and the pull rod 123 is pulled out with the other hand to drive the piston to be pulled out. At this time, negative pressure is generated in the cylinder, thereby generating negative pressure in the first flow channel. At this time, under the action of negative pressure, the second valve ball is pushed to squeeze the first holding spring, providing negative pressure in the second flow channel 110. The second flow channel 110 is connected to the flexible suction tube 2, thereby providing suction force to the flexible suction tube 2, sucking the fluid in the flexible suction tube into the first flow channel and the cylinder 121, and then pushing the pull rod to move in the direction close to the main body, pushing the piston to squeeze the cylinder 121, so that the pressure in the cylinder 121 increases. At this time, the second one-way valve is closed, the third valve ball is pushed open, and the fluid flows into the third valve groove, and then flows into the sampling bottle below through the hole on the valve cover. This reciprocating process achieves the purpose of sampling.

[0045] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A positionable and controllable lubricating oil detection sampling device, comprising a negative pressure suction device (1) and a flexible suction tube (2) connected to the negative pressure suction device, characterized in that: The device also includes a positioning sampling component (3), which includes: A positioning member (30) comprising a threaded portion (301) for threaded connection with the mouth of an oil barrel; A guide channel is coaxially arranged on the positioning member (30) with the threaded portion; The rigid sampling tube (31) is slidably guided in the guide channel, and the upper end portion is connected to the flexible suction tube (2).

2. The positionable and controllable lubricating oil detection sampling device according to claim 1, characterized in that: A column (302) is integrally provided on the side of the positioning member (300) opposite to the threaded portion (301), a guide channel is provided through the column (302), and a locking rod (34) is threadedly connected to the side wall of the column (302).

3. The positionable and controllable lubricating oil detection sampling device according to claim 1, characterized in that: The positioning member (30) is a circular plate, a cylindrical body is coaxially arranged on the first surface of the circular plate, a threaded portion (301) is arranged on the circumferential surface of the cylindrical body, a second cylindrical body (33) is also coaxially arranged on the first surface with the cylindrical body, and a guide channel is arranged through the second cylindrical body.

4. The positionable and controllable lubricating oil detection sampling device according to claim 1, characterized in that: One end of the rigid sampling tube (31) is provided with a plug end (311), and the inner circumference of the other end is provided with a plug channel (312) that plugs into and cooperates with the plug end (311).

5. The positionable and controllable lubricating oil detection sampling device according to claim 4, characterized in that: The end of the flexible suction tube (2) is also connected to a one-way valve (32), and the one-way valve (32) comprises a second plug-in channel (3230) pluggably matched with the plug-in end (311).

6. The positionable and controllable lubricating oil detection sampling device according to claim 5, characterized in that: The one-way valve (32) comprises a valve body (321), a valve cover (320) threadedly connected to the upper end of the valve body, a valve cavity coaxially arranged and communicating with the second plug-in channel (3230) being provided in the valve body, a first valve ball (322) being provided in the valve cavity, and a connecting sleeve (3201) sleeved and mated with the flexible suction tube (2) being provided on the valve cover (320).

7. The positionable and controllable lubricating oil detection sampling device according to claim 6, characterized in that: The other end of the flexible suction tube (2) is connected to a quick-connect connector (11).

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