Full-automatic sampling system for oil tank truck oil

Abstract

The application discloses a kind of oil tank truck oil grease full-automatic sampling system, relate to oil tank truck oil grease sampling technical field, a kind of oil tank truck oil grease full-automatic sampling system, including slide rail and the slide rail on the slide rail slidingly connected slide table, the slide table is equipped with mechanical arm, the drive component for assisting the slide table sliding on the slide rail is arranged between the slide rail and slide table, further include sampling assembly.The application is cooperated by sampling assembly, pressure sampling assembly, pumping and pressure assembly and control assembly, the sampling of upper layer, middle layer and bottom layer in oil tank is completed, in the process of sampling, the sampling of upper layer by pumping and pressure, can be actively absorbed into oil, ensure that sampling is sufficient in proportion, middle layer and bottom layer can be automatically filled into collection cavity by oil self-weight pressure, without additional pumping and pressure, simple structure, energy saving and reliable, and little disturbance, middle and lower layer sediments, moisture, emulsified impurities are not easily forced to suck up, avoid sample detection distortion.

Description

Technical Field

[0001] This invention relates to the field of oil and grease sampling technology for tank trucks, specifically to a fully automated oil and grease sampling system for tank trucks. Background Technology

[0002] The fully automated grease sampling system for oil tankers is a set of standard sampling procedures. It is a sealed intelligent device that automatically completes fixed-point and quantitative sampling of grease at different levels (top, middle, and bottom) inside the oil tanker. Its core feature is automated sampling, avoiding manual tank climbing, disturbance and stratification, inaccurate proportions, and safety risks.

[0003] In the sampling process of the fully automatic grease sampling system for tank trucks, the grease is collected in the sampling tube mainly by pressure collection and collection by the self-flow of the grease under its internal pressure. For pressure collection, strong convection and eddies are formed during the pressure process, which can easily forcibly suck up the middle and lower layers of sediment, water, and emulsified impurities, destroying the original stratification and causing sample detection distortion. When collecting by the self-flow of the grease under its internal pressure, the pressure of the upper liquid column is low, and it is difficult for the grease to flow into the sampling chamber by natural static pressure alone. High-viscosity greases have even worse fluidity, which can easily lead to insufficient sampling volume and incomplete filling of the cavity. Both of these are not convenient for grease sampling operations in tank trucks. Therefore, we propose a fully automatic grease sampling system for tank trucks. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automated oil sampling system for tank trucks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fully automatic grease sampling system for tank trucks, comprising a slide rail and a slide table slidably connected to the slide rail, a robotic arm mounted on the slide table, and a driving component for assisting the slide table to slide on the slide rail is provided between the slide rail and the slide table, further comprising: The sampling assembly is located at the drive end of the robotic arm and is used to sample grease from the oil tank. The sampling assembly is equipped with a buoyancy sampling assembly for sampling the upper layer of grease and a pressure sampling assembly for sampling the middle and bottom layers of grease. The suction and pressure component is installed on the buoyancy sampling component to assist in sampling the upper layer of grease by suction and pressure. And, a control component installed on the sampling assembly for controlling the liquid inlet and shut-off during the oil sampling process of the pressure sampling assembly; The sampling assembly includes a mounting rod, which is detachably mounted to the drive front end of the robotic arm via a thread. The buoyancy sampling assembly is mounted on the mounting rod and injects liquid by suction. A sampling rod is fixed to the end of the mounting rod away from the robotic arm. The pressure sampling assembly is mounted on the sampling rod and injects liquid by the internal pressure of the grease.

[0006] Preferably, the buoyancy sampling assembly includes a sampling sleeve fitted around the outside of the mounting rod. The outer diameter of the sampling rod is larger than that of the mounting rod, and the inner diameter of the sampling sleeve is larger than that of the mounting rod but smaller than that of the sampling rod. This allows the sampling sleeve to slide on the outside of the mounting rod and be blocked by the end of the sampling rod. The sampling sleeve has an annular cavity, and an annular piston plate that is slidably connected to and matched with the annular cavity is installed inside the annular cavity. The annular piston plate, the annular cavity, and the sampling sleeve are concentrically arranged. The sampling sleeve is equipped with multiple sets of inlet pipes communicating with the annular cavity. A one-way valve is installed inside the inlet pipe. The one-way valve is directed from the outside of the sampling sleeve to the inside of the annular cavity. An annular float plate that floats on the surface of the grease during the sampling process is fitted and fixed on the outside of the sampling sleeve.

[0007] Preferably, the pressure-drawing assembly includes an annular mounting groove formed at the upper end of the sampling sleeve, the annular mounting groove being located above the annular cavity, and multiple sets of pull rods being slidably connected between the annular mounting groove and the annular cavity. Multiple sets of pull plates are provided inside the annular mounting groove, and the two ends of each set of pull rods are respectively fixed to the annular piston plate and the pull plate. The sampling sleeve is provided with a transmission assembly for driving the pull plates.

[0008] Preferably, the transmission assembly includes connecting blocks disposed on both sides of the pull plate, a first connecting component for assisting the connection of the connecting blocks is disposed at the upper end of the sampling sleeve, a first transmission pin is fixed between the two sets of connecting blocks, a first inclined groove is provided on the pull plate, the first transmission pin is slidably connected to the first inclined groove, and a first pushing component for pushing the connecting blocks is disposed between the connecting blocks and the mounting rod.

[0009] Preferably, the first pushing component includes a push plate disposed above the sampling sleeve, the connecting block is fixed to the push plate, the push plate has an inclined surface, and a transmission sleeve for abutting against the inclined surface is fixed on the outer side of the mounting rod; The first connecting assembly includes an L-shaped frame fixed to the upper end of the sampling sleeve, two sets of sleeves fixed on the L-shaped frame, sliding rods slidably connected to the sleeves, one end of each of the two sets of sliding rods being fixed to two sets of connecting blocks respectively, and a first spring being sleeved on the outside of the sleeve.

[0010] Preferably, the pressure sampling assembly includes a middle collection chamber and a bottom collection chamber formed inside the sampling rod. The sampling rod is provided with two sets of liquid inlet holes for grease to enter and collect. The two sets of liquid inlet holes are respectively connected to the middle collection chamber and the bottom collection chamber. The sampling rod and the sampling sleeve are provided with a discharge assembly for unloading after sampling.

[0011] Preferably, the control component includes a mounting sleeve fixed to the outside of the sampling rod, a fan-shaped baffle rotatably connected to the mounting sleeve, the inner side of the fan-shaped baffle abutting against the outer side of the sampling rod to block the two sets of liquid inlet holes, and a second pushing component for pushing the fan-shaped baffle is provided at the bottom of the sampling rod.

[0012] Preferably, the second pushing component includes a connecting plate disposed at the front end of the sampling rod, and a second connecting component for auxiliary connection is disposed between the connecting plate and the sampling rod. A fixing rod for abutting against the bottom of the tanker's oil tank is fixed on the connecting plate. A second inclined groove is provided on the fan-shaped baffle, and a second transmission pin is slidably connected to the second inclined groove. One end of the second transmission pin is fixed to the connecting plate.

[0013] Preferably, the second connecting assembly includes multiple sets of T-shaped rods slidably connected to the connecting plate, one end of each T-shaped rod being fixed to the front end of the sampling rod, and a second spring being sleeved on the outer side of each T-shaped rod.

[0014] Preferably, the unloading assembly includes multiple sets of liquid outlet pipes installed on the sampling rod and sampling sleeve, each set of liquid outlet pipes communicating with the annular cavity, the middle layer collection cavity and the bottom layer collection cavity respectively, and the liquid outlet pipes are threaded with plugs.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes the coordinated operation of a sampling component, a pressure sampling component, a pumping component, and a control component to sample the upper, middle, and lower layers of an oil tank. During the sampling process, the upper layer is sampled using a pumping method, which actively draws in the oil to ensure that the sample is taken in proportion and in sufficient quantity. The middle and lower layers automatically fill the collection chamber by the weight pressure of the oil itself, without the need for additional pumping. The structure is simple, energy-efficient, reliable, and causes minimal disturbance. It is also less likely to forcibly draw up sediment, moisture, or emulsified impurities from the middle and lower layers, thus avoiding sample detection distortion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a schematic diagram showing the state of the sampling assembly of the present invention after it has been installed on the robotic arm. Figure 3 This is a schematic diagram of the sampling component structure of the present invention; Figure 4 This is a schematic diagram of the buoyancy sampling component structure of the present invention; Figure 5 This is a schematic diagram of the pumping assembly structure of the present invention; Figure 6 This is a schematic diagram of the transmission assembly, the first pushing assembly, and the first connecting assembly of the present invention; Figure 7This is a schematic diagram of the pressure sampling component structure of the present invention; Figure 8 This is a schematic diagram of the control component, the second pushing component, and the second connecting component of the present invention; Figure 9 This is a schematic diagram of the buoyancy sampling component of the present invention in the state before sampling; Figure 10 This is a schematic diagram of the buoyancy sampling component of the present invention during sampling.

[0017] In the diagram: 101-Slide rail; 102-Slide table; 103-Mechanical arm; 104-Drive component; 201-Mounting rod; 202-Sampling rod; 301-Sampling sleeve; 302-Annular cavity; 303-Annular piston plate; 304-Inlet pipe; 305-One-way valve; 306-Annular float plate; 401-Annular mounting groove; 402-Pull rod; 403-Pull plate; 501-First inclined groove; 502-Connecting block; 503-First transmission pin; 601-Push plate; 602- Inclined surface; 603-Transmission sleeve; 701-L-shaped frame; 702-Sleeve; 703-Slide rod; 704-First spring; 801-Middle layer collection chamber; 802-Bottom layer collection chamber; 803-Liquid inlet; 901-Mounting sleeve; 902-Fan-shaped baffle; 1001-Connecting plate; 1002-Fixing rod; 1003-Second inclined groove; 1004-Second transmission pin; 1101-T-shaped rod; 1102-Second spring; 1201-Liquid outlet pipe; 1202-Plug. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1

[0020] Please see Figures 1-10 The figure shows a fully automatic oil sampling system for tank trucks, including a slide rail 101 and a slide table 102 slidably connected to the slide rail 101. A robotic arm 103 is installed on the slide table 102. A drive component 104 for assisting the slide table 102 to slide on the slide rail 101 is provided between the slide rail 101 and the slide table 102. It should be noted here that: the robotic arm 103 is a multi-axis drive, and the robotic arm 103 and the drive component 104 are conventional technical components in this application. Their working principle and control method are known technologies in this application and will not be described in detail here. Also includes: The sampling assembly is located at the drive front end of the robotic arm 103 and is used to sample grease from the oil tank. The sampling assembly is equipped with a buoyancy sampling assembly for sampling the upper layer of grease and a pressure sampling assembly for sampling the middle and bottom layers of grease. The suction and pressure component is installed on the buoyancy sampling component to assist in sampling the upper layer of grease by suction and pressure. And, a control component installed on the sampling assembly for controlling the liquid inlet and shut-off during the oil sampling process of the pressure sampling assembly; The sampling assembly includes a mounting rod 201, which is detachably mounted to the drive front end of the robotic arm 103 by means of threads. The buoyancy sampling assembly is set on the mounting rod 201 and injects liquid by means of suction. A sampling rod 202 is fixed to the end of the mounting rod 201 away from the robotic arm 103. The pressure sampling assembly is set on the sampling rod 202 and injects liquid by means of the internal pressure of the grease. It should be noted here that the sampling components, pressure sampling components, pumping components, and control components work together to sample the upper, middle, and lower layers of the grease tank. During the sampling process, the upper layer is sampled by pumping, which can actively draw in the oil to ensure that the sample is taken in proportion and in full. The middle and lower layers can automatically fill the collection chamber by the weight pressure of the oil itself, without the need for additional pumping. The structure is simple, energy-saving, reliable, and has little disturbance. It is not easy to forcibly draw up the sediment, water, and emulsified impurities in the middle and lower layers, thus avoiding sample detection distortion.

[0021] Preferably, the buoyancy sampling assembly includes a sampling sleeve 301 sleeved on the outside of the mounting rod 201. The outer diameter of the sampling rod 202 is larger than the outer diameter of the mounting rod 201, and the inner diameter of the sampling sleeve 301 is larger than the outer diameter of the mounting rod 201 but smaller than the outer diameter of the sampling rod 202, so that the sampling sleeve 301 is slidably connected to the outside of the mounting rod 201 and is blocked by the end of the sampling rod 202. It should be noted here that during the pulling out of the sampling rod 202, the upper end of the sampling rod 202 abuts against the bottom of the sampling sleeve 301 (because the outer diameter of the sampling rod 202 is larger than the outer diameter of the mounting rod 201, and the inner diameter of the sampling sleeve 301 is larger than the outer diameter of the mounting rod 201 but smaller than the outer diameter of the sampling rod 202, the sampling sleeve 301 is slidably connected to the outside of the mounting rod 201 and blocked by the end of the sampling rod 202). Through the abutting action, the sampling sleeve 301 is pulled to separate from the oil surface and move out of the oil tank, which facilitates the subsequent release and unloading of the oil after sampling. The sampling sleeve 301 has an annular cavity 302. An annular piston plate 303 is slidably connected inside the annular cavity 302 and matched therewith. The annular piston plate 303, the annular cavity 302 and the sampling sleeve 301 are concentrically arranged. Multiple sets of liquid inlet pipes 304 communicating with the annular cavity 302 are installed on the sampling sleeve 301. A one-way valve 305 is installed inside the liquid inlet pipe 304. The conduction direction of the one-way valve 305 is from the outside of the sampling sleeve 301 to the inside of the annular cavity 302. An annular float plate 306 for floating on the surface of the grease during the sampling process is sleeved and fixed on the outside of the sampling sleeve 301. It should be noted here that: through the suction assembly and transmission assembly, the annular piston plate 303 is pulled to move upward inside the annular cavity 302. Since the conduction direction of the one-way valve 305 is from the outside of the sampling sleeve 301 to the inside of the annular cavity 302, in conjunction with the upward movement of the annular piston plate 303, the annular float plate 306 and the sampling sleeve 301 float on the surface of the grease. The grease in the upper layer is then suctioned into the annular cavity 302 through the liquid inlet pipe 304 for collection. In addition, the one-way valve 305 is a conventional one-way component in this application, and its working principle is well known technology, so it will not be described in detail here.

[0022] Preferably, the pressure extraction assembly includes an annular mounting groove 401 opened at the upper end of the sampling sleeve 301. The annular mounting groove 401 is located above the annular cavity 302, and multiple sets of pull rods 402 are slidably connected between the annular mounting groove 401 and the annular cavity 302. Multiple sets of pull plates 403 are provided inside the annular mounting groove 401. The two ends of each set of pull rods 402 are respectively fixed to the annular piston plate 303 and the pull plate 403. The sampling sleeve 301 is provided with a transmission assembly for transmitting power to the pull plate 403. It should be noted that as the sampling rod 202 continues to be inserted and the buoyancy of the grease surface against the annular float 306, combined with subsequent transmission, the pull plate 403 and the pull rod 402 are forced to move upward. Through the movement of each set of pull rods 402, the annular piston plate 303 is pulled upward inside the annular cavity 302. Since the conduction direction of the one-way valve 305 is from the outside of the sampling sleeve 301 to the inside of the annular cavity 302, the upward movement of the annular piston plate 303 draws pressure, causing the annular float 306 and the sampling sleeve 301 to float on the grease surface. The grease in the upper layer is then drawn into the annular cavity 302 through the liquid inlet pipe 304 for collection.

[0023] Preferably, the transmission assembly includes connecting blocks 502 disposed on both sides of the pull plate 403, a first connecting assembly for assisting the connection of the connecting blocks 502 is disposed at the upper end of the sampling sleeve 301, a first transmission pin 503 is fixed between the two sets of connecting blocks 502, a first inclined groove 501 is provided on the pull plate 403, the first transmission pin 503 is slidably connected to the first inclined groove 501, and a first pushing assembly for pushing the connecting blocks 502 is disposed between the connecting blocks 502 and the mounting rod 201; the first pushing assembly includes a component disposed above the sampling sleeve 301. The push plate 601 has a connecting block 502 fixed on it. The push plate 601 has an inclined surface 602. The outer side of the mounting rod 201 is fitted with a transmission sleeve 603 for abutting against the inclined surface 602. The first connecting assembly includes an L-shaped frame 701 fixed to the upper end of the sampling sleeve 301. Two sets of sleeves 702 are fixed on the L-shaped frame 701. Sliding rods 703 are slidably connected to the sleeves 702. One end of each set of sliding rods 703 is fixed to one of the two sets of connecting blocks 502. A first spring 704 is fitted on the outer side of the sleeves 702. It should be noted here that: as the sampling rod 202 continues to be inserted and the buoyancy of the grease surface against the annular float 306 causes relative movement between the sampling rod 202 and the mounting rod 201 and the annular float 306. During this relative movement, the bottom of the transmission sleeve 603 on the mounting rod 201 abuts against the inclined surface 602 on each set of push plates 601. During this abutment, the push plates 601 and the connecting block 502 are subjected to force and move. During the movement of the connecting block 502, the sleeve 702 on the first connecting assembly and the slide rod 7... 03 The sliding guide effect of the connecting block 502 after being subjected to force causes the push plate 601 and the connecting block 502 to move away from the mounting rod 201. During the movement of the connecting block 502, the first transmission pin 503 is driven to move. During the movement of the first transmission pin 503, through the mutual transmission between the first transmission pin 503 and the first inclined groove 501 on the pull plate 403, the pull plate 403 and the pull rod 402 are forced to move upward. Through the movement of each set of pull rods 402, the annular piston plate 303 is pulled to move upward inside the annular cavity 302.

[0024] Preferably, the pressure sampling assembly includes a middle collection chamber 801 and a bottom collection chamber 802 opened inside the sampling rod 202. The sampling rod 202 is provided with two sets of liquid inlet holes 803 for grease to enter and collect. The two sets of liquid inlet holes 803 are respectively connected to the middle collection chamber 801 and the bottom collection chamber 802. The sampling rod 202 and the sampling sleeve 301 are provided with a discharge assembly for unloading after sampling. It should be noted here that as the mounting rod 201 and sampling rod 202 continue to be inserted, the transmission causes the fan-shaped baffle 902 to stop sealing the two sets of liquid inlet holes 803 and stop the sampling rod 202 from being inserted further. At this time, the middle layer collection chamber 801 and the bottom layer collection chamber 802 of the sampling rod 202 are located in the middle layer and the bottom layer of the grease, respectively. Through the pressure inside the grease, the grease at the corresponding position flows into the middle layer collection chamber 801 and the bottom layer collection chamber 802 through the two sets of liquid inlet holes 803 for collection.

[0025] Preferably, the control component includes a mounting sleeve 901 fixed to the outside of the sampling rod 202, a fan-shaped baffle 902 rotatably connected to the mounting sleeve 901, the inner side of the fan-shaped baffle 902 abutting against the outer side of the sampling rod 202, used to block the two sets of liquid inlet holes 803, and a second pushing component for pushing the fan-shaped baffle 902 is provided at the bottom of the sampling rod 202; the second pushing component includes a connecting plate 1001 provided at the front end of the sampling rod 202, a second connecting component for auxiliary connection is provided between the connecting plate 1001 and the sampling rod 202, a fixing rod 1002 for abutting against the bottom of the tanker tank is fixed on the connecting plate 1001, a second inclined groove 1003 is provided on the fan-shaped baffle 902, a second transmission pin 1004 is slidably connected to the second inclined groove 1003, and one end of the second transmission pin 1004 is fixed to the connecting plate 1001; It should be noted here that: as the installation rod 201 and sampling rod 202 continue to be inserted, the end of the fixing rod 1002 at the front end of the sampling rod 202 abuts against the bottom of the oil tank. With the continued movement of the sampling rod 202 and the limiting effect of the bottom of the oil tank on the fixing rod 1002 and the connecting plate 1001, the sampling rod 202 undergoes a relative retraction movement towards the connecting plate 1001 and the fixing rod 1002. During this relative movement, the installation sleeve 901 drives the sector-shaped baffle 902 to move synchronously relative to the connecting plate 1001. During this relative movement, the sector-shaped baffle 902... The interaction between the second inclined groove 1003 and the second transmission pin 1004 on the connecting plate 1001 causes the sector baffle 902 to rotate on the mounting sleeve 901 under force. Through the rotation of the sector baffle 902, the sector baffle 902 no longer seals the two sets of liquid inlet holes 803 and stops the sampling rod 202 from being inserted further. At this time, the middle layer collection chamber 801 and the bottom layer collection chamber 802 of the sampling rod 202 are respectively located in the middle layer and the bottom layer of the grease. Through the pressure inside the grease, the grease at the corresponding position flows into the middle layer collection chamber 801 and the bottom layer collection chamber 802 through the two sets of liquid inlet holes 803 for collection.

[0026] Preferably, the second connecting assembly includes multiple sets of T-shaped rods 1101 slidably connected to the connecting plate 1001, one end of the T-shaped rod 1101 being fixed to the front end of the sampling rod 202, and a second spring 1102 being sleeved on the outer side of the T-shaped rod 1101; It should be noted here that: multiple sets of T-shaped rods 1101 guide the relative movement between the connecting plate 1001 and the sampling rod 202, and the second spring 1102 facilitates the resetting of the connecting plate 1001 and the sampling rod 202 after the relative movement.

[0027] Preferably, the unloading assembly includes multiple sets of liquid outlet pipes 1201 installed on the sampling rod 202 and the sampling sleeve 301. Each set of liquid outlet pipes 1201 is connected to the annular cavity 302, the middle layer collection cavity 801 and the bottom layer collection cavity 802 respectively. A plug 1202 is threaded onto the liquid outlet pipe 1201. It should be noted here that after sampling is completed, the plug 1202 is removed from each group of liquid outlet pipes 1201. At this time, the grease collected inside the annular cavity 302, the middle layer collection cavity 801 and the bottom layer collection cavity 802 can be released.

[0028] This solution describes a fully automated grease sampling system for tank trucks, comprising the following steps: The oil tanker to be sampled is driven to one side of the slide rail 101 and stopped. Driven by the drive component 104, the slide table 102 and the robotic arm 103 on it move. This movement moves the robotic arm 103 to a designated position above the oil tanker. After the slide table 102 and robotic arm 103 have moved, the multi-axis drive on the robotic arm 103 causes the entire sampling assembly to be inserted vertically into the oil tank from above. During insertion, the tip of the sampling rod 202 passes through the oil surface and moves towards the bottom of the oil, causing the annular float 306 on the sampling sleeve 301 to float on the oil surface (see...). Figure 9 During the insertion of the sampling rod 202, the two sets of liquid inlet holes 803 on the sampling rod 202 are sealed by the fan-shaped baffle 902 to prevent oil at different depths from flowing into the middle collection chamber 801 and the bottom collection chamber 802 during the insertion of the sampling rod 202, thus ensuring the accuracy of subsequent oil sampling at the specified depth. As the sampling rod 202 continues to be inserted and the buoyancy of the grease surface against the annular float 306 causes relative movement between the sampling rod 202, the mounting rod 201, and the annular float 306. During this relative movement, the bottom of the transmission sleeve 603 on the mounting rod 201 abuts against the inclined surface 602 on each set of push plates 601. During this abutment, the push plates 601 and the connecting block 502 are subjected to force and move. During the movement of the connecting block 502, the force is mediated through the sleeve 702 on the first connecting assembly and the sliding rod 703. The sliding guide action of the rear connecting block 502 causes the push plate 601 and the connecting block 502 to move away from the mounting rod 201. During the movement of the connecting block 502, it drives the first transmission pin 503 to move. During the movement of the first transmission pin 503, through the mutual transmission between the first transmission pin 503 and the first inclined groove 501 on the pull plate 403, the pull plate 403 and the pull rod 402 are forced to move upward. Through the movement of each set of pull rods 402, the annular piston plate 303 is pulled upward inside the annular cavity 302 (see...). Figure 10 (In the state), because the conduction direction of the one-way valve 305 is from the outside of the sampling sleeve 301 to the inside of the annular cavity 302, in conjunction with the upward movement of the annular piston plate 303, the annular float plate 306 and the sampling sleeve 301 float on the surface of the grease. The grease in the upper layer is then drawn into the annular cavity 302 through the inlet pipe 304 for collection (see...). Figure 10 (in the state of the oil), the upper layer of the oil is collected by pressure extraction. Through pressure extraction, the oil can be actively drawn in to ensure that the sample is taken in full and in proportion. As the mounting rod 201 and sampling rod 202 continue to be inserted, the end of the fixing rod 1002 at the front end of the sampling rod 202 abuts against the bottom of the oil tank. With the continued movement of the sampling rod 202 and the limiting effect of the bottom of the oil tank on the fixing rod 1002 and the connecting plate 1001, the sampling rod 202 undergoes a relative retraction movement towards the connecting plate 1001 and the fixing rod 1002. During this relative movement, the mounting sleeve 901 drives the sector-shaped baffle 902 to move synchronously relative to the connecting plate 1001. During this relative movement, through the interaction between the second inclined groove 1003 on the sector-shaped baffle 902 and the second transmission pin 1004 on the connecting plate 1001, the sector-shaped baffle 902 is subjected to force and rotates on the mounting sleeve 901. The rotation of 902 causes the fan-shaped baffle 902 to stop sealing the two sets of liquid inlet holes 803 and stop the sampling rod 202 from being inserted further. At this time, the middle layer collection chamber 801 and the bottom layer collection chamber 802 of the sampling rod 202 are respectively in the middle layer and the bottom layer of the grease. Through the pressure inside the grease, the grease at the corresponding position flows into the middle layer collection chamber 801 and the bottom layer collection chamber 802 through the two sets of liquid inlet holes 803 for collection, thus completing the sampling of the middle layer and the bottom layer of the grease inside the tank truck. During the sampling process, the middle and bottom layers are buried at a large depth and the static pressure of the liquid column is sufficient. The collection chamber can be automatically filled by the weight pressure of the oil, without the need for additional pumping. The structure is simple, energy-saving and reliable, and the disturbance is small. It is not easy to forcibly suck up the sediment, water and emulsion impurities in the middle and lower layers, thus avoiding sample detection distortion. After sampling, the robotic arm 103 pulls the mounting rod 201 and sampling rod 202 out of the grease. During the pulling process, the elastic force of the second spring 1102 resets the relative position of the connecting plate 1001 and the sampling rod 202. During the reset process, the fan-shaped baffle 902 is reset by reverse rotation and seals the two sets of liquid inlet holes 803 on the sampling rod 202 again, preventing the grease from flowing out after sampling and preventing grease of different depths from flowing into the middle collection chamber 801 and the bottom collection chamber 802, further ensuring the subsequent designated... The accuracy of deep grease sampling is ensured. During the extraction of the sampling rod 202, the upper end of the sampling rod 202 abuts against the bottom of the sampling sleeve 301 (because the outer diameter of the sampling rod 202 is larger than the outer diameter of the mounting rod 201, and the inner diameter of the sampling sleeve 301 is larger than the outer diameter of the mounting rod 201 but smaller than the outer diameter of the sampling rod 202, the sampling sleeve 301 is slidably connected to the outside of the mounting rod 201 and blocked by the end of the sampling rod 202). Through the abutting action, the sampling sleeve 301 is pulled to separate from the grease surface and move out of the oil tank, which facilitates the subsequent release and unloading of the sampled grease.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A fully automated grease sampling system for oil tankers, comprising: A slide rail (101) and a slide table (102) slidably connected to the slide rail (101), a robotic arm (103) is mounted on the slide table (102), and a driving component (104) for assisting the slide table (102) to slide on the slide rail (101) is provided between the slide rail (101) and the slide table (102). Its characteristic is that it further includes: The sampling assembly is located at the drive front end of the robotic arm (103) and is used to sample the oil in the oil tank. The sampling assembly is equipped with a buoyancy sampling assembly for sampling the upper layer of oil and a pressure sampling assembly for sampling the middle and bottom layers of oil. The suction and pressure component is installed on the buoyancy sampling component to assist in sampling the upper layer of grease by suction and pressure. And, a control component installed on the sampling assembly for controlling the liquid inlet and shut-off during the oil sampling process of the pressure sampling assembly; The sampling assembly includes a mounting rod (201), which is detachably mounted to the drive front end of the robotic arm (103) by means of threads. The buoyancy sampling assembly is set on the mounting rod (201) and injects liquid by means of suction. A sampling rod (202) is fixed at one end of the mounting rod (201) away from the robotic arm (103). The pressure sampling assembly is set on the sampling rod (202) and injects liquid by means of the internal pressure of the grease.

2. The full-automatic sampling system for oil tank truck oil according to claim 1, characterized in that: The buoyancy sampling assembly includes a sampling sleeve (301) fitted around the outside of the mounting rod (201). The outer diameter of the sampling rod (202) is larger than that of the mounting rod (201), and the inner diameter of the sampling sleeve (301) is larger than that of the mounting rod (201) but smaller than that of the sampling rod (202). The sampling sleeve (301) is slidably connected to the outside of the mounting rod (201) and abuts against the end of the sampling rod (202). An annular cavity (302) is formed on the sampling sleeve (301), and a slidingly connected component is slidably connected inside the annular cavity (302). A matching annular piston plate (303) is provided. The annular piston plate (303), annular cavity (302) and sampling sleeve (301) are concentrically arranged. Multiple sets of liquid inlet pipes (304) communicating with the annular cavity (302) are installed on the sampling sleeve (301). A one-way valve (305) is installed inside the liquid inlet pipe (304). The conduction direction of the one-way valve (305) is from the outside of the sampling sleeve (301) to the inside of the annular cavity (302). An annular float plate (306) for floating on the surface of the grease during the sampling process is fixedly fitted on the outside of the sampling sleeve (301).

3. The fully automated grease sampling system for tank trucks according to claim 2, characterized in that: The pressure-drawing assembly includes an annular mounting groove (401) opened at the upper end of the sampling sleeve (301). The annular mounting groove (401) is located above the annular cavity (302), and multiple sets of pull rods (402) are slidably connected between the annular mounting groove (401) and the annular cavity (302). Multiple sets of pull plates (403) are arranged inside the annular mounting groove (401). The two ends of each set of pull rods (402) are respectively fixed to the annular piston plate (303) and the pull plate (403). The sampling sleeve (301) is provided with a transmission assembly for driving the pull plate (403).

4. The fully automated grease sampling system for tank trucks according to claim 3, characterized in that: The transmission assembly includes connecting blocks (502) disposed on both sides of the pull plate (403). The upper end of the sampling sleeve (301) is provided with a first connecting component for assisting the connection of the connecting blocks (502). A first transmission pin (503) is fixed between the two sets of connecting blocks (502). A first inclined groove (501) is opened on the pull plate (403). The first transmission pin (503) is slidably connected to the first inclined groove (501). A first pushing component for pushing the connecting blocks (502) is provided between the connecting blocks (502) and the mounting rod (201).

5. The fully automatic grease sampling system for tank trucks according to claim 4, characterized in that: The first pushing component includes a push plate (601) disposed above the sampling sleeve (301), the connecting block (502) is fixed on the push plate (601), the push plate (601) has an inclined surface (602), and the outer side of the mounting rod (201) is fitted with a transmission sleeve (603) for abutting against the inclined surface (602). The first connecting assembly includes an L-shaped frame (701) fixed to the upper end of the sampling sleeve (301), two sets of sleeves (702) fixed on the L-shaped frame (701), and sliding rods (703) slidably connected on the sleeves (702). One end of the two sets of sliding rods (703) is fixed to two sets of connecting blocks (502) respectively, and a first spring (704) is sleeved on the outside of the sleeves (702).

6. The fully automatic grease sampling system for tank trucks according to claim 2, characterized in that: The pressure sampling assembly includes a middle collection chamber (801) and a bottom collection chamber (802) inside the sampling rod (202). The sampling rod (202) is provided with two sets of liquid inlet holes (803) for grease to enter and collect. The two sets of liquid inlet holes (803) are respectively connected to the middle collection chamber (801) and the bottom collection chamber (802). The sampling rod (202) and the sampling sleeve (301) are provided with a discharge assembly for unloading after sampling.

7. The fully automated grease sampling system for tank trucks according to claim 6, characterized in that: The control component includes a mounting sleeve (901) fixed to the outside of the sampling rod (202), a fan-shaped baffle (902) rotatably connected to the mounting sleeve (901), the inner side of the fan-shaped baffle (902) abutting against the outer side of the sampling rod (202) to block the two sets of liquid inlet holes (803), and a second pushing component for pushing the fan-shaped baffle (902) is provided at the bottom of the sampling rod (202).

8. The fully automated grease sampling system for tank trucks according to claim 7, characterized in that: The second pushing component includes a connecting plate (1001) disposed at the front end of the sampling rod (202). A second connecting component for auxiliary connection is provided between the connecting plate (1001) and the sampling rod (202). A fixing rod (1002) for abutting against the bottom of the oil tanker is fixed on the connecting plate (1001). A second inclined groove (1003) is provided on the fan-shaped baffle (902). A second transmission pin (1004) is slidably connected on the second inclined groove (1003). One end of the second transmission pin (1004) is fixed to the connecting plate (1001).

9. The fully automated grease sampling system for tank trucks according to claim 8, characterized in that: The second connecting assembly includes multiple sets of T-shaped rods (1101) slidably connected to the connecting plate (1001). One end of each T-shaped rod (1101) is fixed to the front end of the sampling rod (202), and a second spring (1102) is sleeved on the outside of each T-shaped rod (1101).

10. The fully automated grease sampling system for tank trucks according to claim 6, characterized in that: The unloading assembly includes multiple sets of liquid outlet pipes (1201) installed on the sampling rod (202) and the sampling sleeve (301). Each set of liquid outlet pipes (1201) is connected to the annular cavity (302), the middle layer collection cavity (801) and the bottom layer collection cavity (802) respectively. A plug (1202) is threaded onto the liquid outlet pipe (1201).

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