Sampling equipment suitable for oleic acid production detection

Abstract

The invention discloses sampling equipment suitable for oleic acid production detection, and relates to the technical field of oleic acid sampling. Comprising a gas-guide tube; the handle is fixedly connected to the air guide pipe; the sample storage barrel is fixedly connected and communicated with the gas guide tube; the sample storage barrel is provided with an oil inlet corresponding to the first blocking plate, the first blocking plate is used for blocking the oil inlet adjacent to the sample storage barrel, the fixing blocks are fixedly connected to the gas guide pipe, and the first blocking plate is used for blocking the oil inlet adjacent to the sample storage barrel. A connecting rope is fixedly connected between the fixing block and the first plugging plate which are adjacent up and down; and the floating ball is arranged in the sample storage barrel. The oil inlet of the sample storage barrel is plugged through the first plugging plate, plugging of the oil inlet of the sample storage barrel is relieved by pulling the connecting rope, the situation that oleic acid at the liquid level enters the sampling device during sampling is avoided, and the obtained oleic acid sample has representativeness.

Description

Technical Field

[0001] The present invention relates to the technical field of oleic acid sampling, and particularly to a sampling device suitable for oleic acid production detection. Background Art

[0002] Oleic acid is a monounsaturated fatty acid, usually colorless or light yellow liquid in pure state, widely existing in nature, especially in vegetable oils and animal fats. Oleic acid is widely used in multiple fields, such as food, cosmetics, pharmaceuticals, and chemical industry, etc.

[0003] The production detection of oleic acid is an important link to ensure product quality and meet relevant standards. When conducting production detection on oleic acid, it is necessary to sample from the oil storage barrel. However, most of the existing sampling devices are of an open structure. When using the existing sampling device to sample oleic acid in the oil storage barrel, the existing sampling device is put into the oleic acid in the oil storage barrel, and the oleic acid enters the inner cavity from the opening above the sampling device and discharges the gas in the inner cavity. When sampling in this way, the oleic acid at the liquid level will flow into the sampling device, but the oleic acid at the liquid level is easy to contact with air and oxidize. Therefore, when the oxidized oleic acid is mixed into the oleic acid sample, it will cause the oleic acid sample to be unrepresentative and affect the accuracy of the detection results. Summary of the Invention

[0004] In order to overcome the problems and disadvantages proposed in the above background art, the present invention provides a sampling device suitable for oleic acid production detection.

[0005] The technical implementation solution of the present invention is: a sampling device suitable for oleic acid production detection, comprising:

[0006] A gas guide pipe;

[0007] A handle, fixedly connected to the gas guide pipe;

[0008] A sample storage cylinder, fixedly connected and communicated with the gas guide pipe;

[0009] A plurality of first blocking plates, hermetically and slidably connected to the sample storage cylinder. The sample storage cylinder is provided with an oil inlet corresponding to the first blocking plate. The first blocking plate is used to block the adjacent oil inlets of the sample storage cylinder. A first elastic member is fixedly connected between the sample storage cylinder and the first blocking plate;

[0010] A plurality of fixing blocks, fixedly connected to the gas guide pipe. A connecting rope is fixedly connected between the upper and lower adjacent fixing blocks and the first blocking plate;

[0011] A floating ball, arranged in the sample storage cylinder, used to block the gas guide pipe;

[0012] A shielding assembly, arranged on the gas guide pipe, and the shielding assembly is used to shield the oleic acid at the liquid level.

[0013] Furthermore, the air duct is composed of a cylinder and a truncated cone ring, the air duct truncated cone ring is fixedly connected to the sample storage cylinder, and the diameter of the air duct truncated cone ring gradually increases from a side close to the air duct cylinder to a side away from the air duct cylinder, the diameter of the float is larger than the minimum diameter of the air duct truncated cone ring, and the diameter of the float is smaller than the maximum diameter of the air duct truncated cone ring.

[0014] Furthermore, the shielding component comprises:

[0015] a first sliding plate, slidably connected to the air guide tube, the first sliding plate being fixedly connected to a plurality of connecting rods, the connecting rods being rotatably connected to toggle plates, adjacent to the toggle plates being in contact with each other, the toggle plates being fixedly connected to fixing ropes, the fixing ropes being fixedly connected to floats, and a second elastic member being fixedly connected between the connecting rods and the toggle plates;

[0016] Extrusion rods, the number of which is the same as the number of the connecting rods, are fixed to the sample storage tube, and the extrusion rods are used to squeeze the adjacent toggle plates;

[0017] a second sliding plate, slidably connected to the air guide tube;

[0018] Unsealing components, the number of which is the same as the number of the first blocking plates, are arranged on the first sliding plate, and the unsealing components are used to automatically release the blockage of the first blocking plate on the adjacent oil inlet of the sample storage cylinder;

[0019] A locking assembly is arranged on the air duct, and is used to lock the position of the second sliding plate on the air duct.

[0020] Furthermore, the squeezing rod is tilted downwardly at a side away from the sample storage cylinder.

[0021] Furthermore, the decapsulation component includes:

[0022] An extrusion member, fixedly connected to the first sliding plate, and used for extruding the adjacent connecting ropes;

[0023] The fixed shell is fixedly connected to the second sliding plate. The fixed shell is rotatably connected to a plurality of rollers, and the rollers are in contact with the adjacent connecting ropes.

[0024] Furthermore, the height of the extrusion member is greater than the height of the oil inlet of the sample storage cylinder.

[0025] Furthermore, a center line of the fixing shell and a center line of the extrusion component are located on the same vertical plane.

[0026] Furthermore, the locking assembly comprises:

[0027] There are several arc-shaped plates, which are fixedly connected to the second sliding plate in the circumferential direction. The arc-shaped plates are connected to a rotating ring for common rotation, and the rotating ring is provided with a limiting groove;

[0028] A friction block is slidably connected to the second sliding disk, the friction block contacts the air guide tube, and the friction block is fixedly connected with an extrusion column, and the extrusion column slides in a limited position in the limiting groove of the rotating ring.

[0029] Furthermore, the limiting groove of the rotating ring is arc-shaped, and the center of a circle corresponding to the limiting groove of the rotating ring is misaligned with the center of a circle of the rotating ring.

[0030] Furthermore, it also includes:

[0031] An adjusting component is arranged on the air duct, and is used to adjust the flow area of ​​the air duct. The adjusting component includes:

[0032] A second blocking plate is fixedly connected to the inner wall of the air duct, the second blocking plate is slidably connected to a ventilation plate, the ventilation plate is provided with ventilation holes, and the ventilation plate is sealingly and slidably connected to the inner wall of the air duct;

[0033] The fixing plate is fixedly connected to the inner wall of the air guide tube, and a third elastic member is fixedly connected between the ventilation plate and the fixing plate.

[0034] The beneficial effects of the present invention are as follows: 1. The present invention blocks the oil inlet of the sample storage cylinder by a first blocking plate. When the oil inlet of the sample storage cylinder reaches a sampling position below the oleic acid liquid surface, the connecting rope is pulled to release the blockage of the oil inlet of the sample storage cylinder for sampling, thereby avoiding a situation in which a large amount of oleic acid at the liquid surface enters the sampling device during sampling, and making the taken oleic acid sample representative.

[0035] 2. The present invention shields the oxidized oleic acid by means of a toggle plate, so that the sample storage tube directly contacts the oleic acid below the liquid surface, and after the oil inlet of the sample storage tube is located below the oleic acid liquid surface, the toggle plate is toggled to disperse the oil at the liquid surface and on the toggle plate, thereby ensuring that the sample storage tube can collect unoxidized oleic acid and making the taken oleic acid sample representative.

[0036] 3. The present invention adjusts the position of the second sliding disk in advance so that when it reaches the designated position below the oleic acid liquid surface, the air guide tube is limited to avoid the situation where the sampling position is different from the designated sampling position when it moves downward, making the sample unrepresentative.

[0037] 4. The present invention extrude the connecting rope through the extrusion part, and after reaching the designated position, the first sealing plate is automatically opened to seal the oil inlet of the sample storage cylinder, and sampling is performed automatically, which reduces the operation steps and speeds up the sampling efficiency.

[0038] 5. By adjusting the distance between the oil inlet of the sample storage cylinder and the oleic acid liquid level, the present invention adaptively changes the gap between the sealing plate and the ventilation plate, ensuring the stable entry of oleic acid into the sample storage cylinder, reducing the generation of bubbles in the sample storage cylinder, and guaranteeing the amount of the taken oleic acid sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0040] Figure 2 is a working state diagram of the present invention during sampling;

[0041] Figure 3 is a three-dimensional structural schematic diagram of the toggle plate and the extrusion rod of the present invention;

[0042] Figure 4 is a three-dimensional structural schematic diagram of the first sliding disk and the connecting rod of the present invention;

[0043] Figure 5 is a three-dimensional structural schematic diagram of the floating ball and the extrusion member of the present invention;

[0044] Figure 6 is a three-dimensional structural schematic diagram of the air guide pipe and the first elastic member of the present invention;

[0045] Figure 7 is a three-dimensional structural schematic diagram of the fixed shell and the roller of the present invention;

[0046] Figure 8 is an exploded three-dimensional structural diagram of the arc plate and the rotating ring of the present invention;

[0047] Figure 9 is a three-dimensional structural schematic diagram of the fixed block and the fixing plate of the present invention;

[0048] Figure 10 is a three-dimensional structural schematic diagram of the second sealing plate and the ventilation plate of the present invention;

[0049] Figure 11 is an exploded three-dimensional structural diagram of the second sealing plate and the fixing plate of the present invention.

[0050] Reference numerals in the drawings: 1: air guide pipe, 2: handle, 3: sample storage cylinder, 4: first sealing plate, 5: first elastic member, 6: fixed block, 7: connecting rope, 8: floating ball, 1001: first sliding disk, 1002: connecting rod, 1003: toggle plate, 1004: fixing rope, 1005: floating buoy, 1006: second elastic member, 1007: extrusion rod, 1101: extrusion member, 1102: second sliding disk, 1103: fixed shell, 1104: roller, 1201: arc plate, 1202: rotating ring, 1203: friction block, 1204: extrusion column, 1301: second sealing plate, 1302: ventilation plate, 1303: fixing plate, 1304: third elastic member. Detailed implementation mode

[0051] The present invention will be specifically described below with reference to the accompanying drawings.

[0052] When the existing oleic acid sampling device takes oleic acid located in the storage cylinder, due to its open structure, some oxidized oleic acid on the oleic acid liquid surface will inevitably be collected during sampling, resulting in the sampled oleic acid containing the oxidized oleic acid at the liquid surface, and the oleic acid sample lacks representativeness.

[0053] Embodiment 1: A sampling device applicable to oleic acid production detection, as Figures 1-6 shown, includes: an air guide pipe 1; a handle 2 fixedly connected to the air guide pipe 1; a sample storage cylinder 3 fixedly connected and communicated with the air guide pipe 1; a plurality of first sealing plates 4, hermetically and slidably connected to the sample storage cylinder 3, the sample storage cylinder 3 is provided with an oil inlet corresponding to the first sealing plate 4, the first sealing plate 4 is used to block the adjacent oil inlets of the sample storage cylinder 3, and a first elastic member 5 is fixedly connected between the sample storage cylinder 3 and the first sealing plate 4; a plurality of fixing blocks 6 fixedly connected to the air guide pipe 1, and a connecting rope 7 is fixedly connected between the upper and lower adjacent fixing blocks 6 and the first sealing plate 4; a floating ball 8 disposed in the sample storage cylinder 3 for blocking the air guide pipe 1, the air guide pipe 1 is composed of a cylinder and a frustum ring, the frustum ring of the air guide pipe 1 is fixedly connected to the sample storage cylinder 3, and the diameter of the frustum ring of the air guide pipe 1 gradually increases from the side close to the cylinder of the air guide pipe 1 to the side far from the cylinder of the air guide pipe 1, the diameter of the floating ball 8 is greater than the minimum diameter of the frustum ring of the air guide pipe 1, and the diameter of the floating ball 8 is less than the maximum diameter of the frustum ring of the air guide pipe 1; a shielding assembly disposed on the air guide pipe 1, and the shielding assembly is used to shield the oleic acid at the liquid surface.

[0054] In the above scheme, the outer side of the air guide tube 1 is provided with a long chute evenly distributed in the circumference, the float 8 is used to block the inner wall of the truncated cone ring of the air guide tube 1, and the truncated cone ring of the air guide tube 1 guides the float 8 to the middle, the handle 2 is annular, which is convenient for grasping during use, the sample storage barrel 3 is provided with four oil inlets evenly distributed in the circumference, and the sample storage barrel 3 is provided with four rectangular chute evenly distributed in the circumference. The oil inlet of the sample storage barrel 3 passes through the adjacent rectangular chute of the sample storage barrel 3, and the lower side surface of the rectangular chute of the sample storage barrel 3 is located below the lower side surface of the upper oil inlet thereof, and the lower side surface of the sample storage barrel 3 is fixed with a cone, which is used to guide the sample storage barrel 3 when it moves downward. Oleic acid diffuses all around, the width of the first blocking plate 4 is greater than the width of the oil inlet of the sample storage cylinder 3, which is used to ensure the blocking effect of the oil inlet of the sample storage cylinder 3, the first elastic member 5 is a tension spring, the number of fixed blocks 6 is four, and the four fixed blocks 6 are evenly distributed circumferentially, all located between the handle 2 and the rectangular slides of the four sample storage cylinders 3, the horizontal projection of the fixed block 6 is located on the symmetrical center line of the horizontal projection of the rectangular slides of two adjacent sample storage cylinders 3, the connecting rope 7 can adjust its material according to the specific usage, and the connecting rope 7 is not elastic, such as a polyester rope, the density of the float 8 is less than the density of oleic acid, ensuring that the float 8 can float on the surface of oleic acid, attached Figure 6 This is the state when the float ball 8 blocks the truncated cone ring of the air guide pipe 1.

[0055] like Figures 1-5 As shown, the shielding assembly includes: a first sliding plate 1001, which is slidably connected to the air guide tube 1, the first sliding plate 1001 is fixedly connected to a plurality of connecting rods 1002, the connecting rods 1002 are rotatably connected to the toggle plates 1003, adjacent to the toggle plates 1003 are in contact with each other, the toggle plates 1003 are fixedly connected to the fixing ropes 1004, the fixing ropes 1004 are fixedly connected to the floats 1005, and a second elastic member 1006 is fixedly connected between the connecting rods 1002 and the toggle plates 1003; and extrusion rods 1007, the number of which is the same as the number of the connecting rods 1002. , fixedly connected to the sample storage cylinder 3, the squeezing rod 1007 is used to squeeze the adjacent toggle plate 1003, and the squeezing rod 1007 is tilted downward on the side away from the sample storage cylinder 3; the second sliding disk 1102 is slidably connected to the air duct 1; the unsealing components, the number of which is consistent with the number of the first blocking plates 4, are arranged on the first sliding disk 1001, and the unsealing components are used to automatically release the blockage of the first blocking plate 4 on the adjacent oil inlet of the sample storage cylinder 3; the locking component is arranged on the air duct 1, and the locking component is used to lock the position of the second sliding disk 1102 on the air duct 1.

[0056] In the above scheme, the first sliding plate 1001 is provided with four avoidance holes, and the four connecting ropes 7 pass through the adjacent avoidance holes on the first sliding plate 1001 respectively. There are four connecting rods 1002, and the four connecting rods 1002 are evenly distributed in the circumferential direction, and are respectively located on the same vertical plane as the long slide groove on the air guide tube 1. The outer side surface of the toggle plate 1003 is V-shaped, which is used to toggle the oleic acid to move around when it is flipped outward. The fixing rope 1004 is made of flexible material, such as nylon rope, and when the toggle plate 1003 is flipped outward, it changes its shape to adapt to the flipping of the toggle plate 1003. The toggle plate 1003 is in contact with the long slide groove adjacent to the air guide tube 1, and the lower side surface of the long slide groove of the air guide tube 1 is provided with an edge bevel, which is used to make the toggle plate 1003 slide out, and the float 1 The surface of 005 is coated with an oleophobic acid material, such as a fluorocarbon coating, to prevent the surface from being corroded by oleic acid for a long time. The second elastic member 1006 is a coil spring. There are two second elastic members 1006 fixedly connected between the connecting rod 1002 and the adjacent toggle plate 1003. The squeezing rod 1007 is located on the sample storage tube 3. When the toggle plate 1003 releases the contact with the adjacent squeezing rod 1007 during the movement, it contacts the adjacent sample storage tube 3 under the action of the elastic force of the two adjacent second elastic members 1006. The inclination angle and length of the squeezing rod 1007 can be adjusted according to the specific usage conditions, and is used to change the folding degree of the toggle plate 1003 to ensure that it does not affect the movement of the sample storage tube 3 and does not affect the downward sliding of the toggle plate 1003 relative to the sample storage tube 3.

[0057] like Figure 1 , Figure 2 and Figures 5-8 As shown, the unsealing component includes: an extrusion member 1101, which is fixed to the first sliding disk 1001, and the extrusion member 1101 is used to extrude the adjacent connecting rope 7, and the height of the extrusion member 1101 is greater than the height of the oil inlet of the sample storage cylinder 3; a fixed shell 1103, which is fixed to the second sliding disk 1102, and the center line of the fixed shell 1103 and the center line of the extrusion member 1101 are located on the same vertical plane, and the fixed shell 1103 is rotatably connected to a plurality of rollers 1104, and the rollers 1104 are in contact with the adjacent connecting ropes 7.

[0058] In the above solution, the central axis of the extrusion member 1101 and the central axis of the adjacent connecting rope 7 are located in the same vertical plane. A cylinder is fixedly connected to the upper part of the extrusion member 1101 to avoid damaging the connecting rope 7 when extruding the connecting rope 7. The height of the extrusion member 1101 can be adjusted according to specific usage conditions to ensure that the extrusion member 1101 can drive the first sealing plate 4 to be fully opened through the connecting rope 7. The second sliding disk 1102 is located above the first sliding disk 1001. The fixed shell 1103 is in an inclined state to facilitate the movement of the connecting rope 7. The central axis of the fixed shell 1103, the central axis of the connecting rope 7, and the extrusion member 1101 are all located in the same vertical plane to ensure that the extrusion member 1101 will not damage the fixed shell 1103 when passing through the adjacent fixed shell 1103. The four rollers 1104 in the fixed shell 1103 are distributed in a rectangular array, and the width between the two adjacent rollers 1104 on the left and right is greater than the width of the extrusion member 1101, ensuring that the extrusion member 1101 can pass between the four adjacent rollers 1104 on the left and right and extrude the adjacent connecting rope 7.

[0059] As Figure 2 , Figure 7 and Figure 8 shown, the locking assembly includes: an arc plate 1201, the number of which is several, circumferentially fixedly connected to the second sliding disk 1102. A plurality of arc plates 1201 are jointly rotatably connected to a rotating ring 1202. The rotating ring 1202 is provided with a limiting groove. The limiting groove of the rotating ring 1202 is arc-shaped, and the center corresponding to the limiting groove of the rotating ring 1202 is offset from the center of the rotating ring 1202; a friction block 1203, slidably connected to the second sliding disk 1102, the friction block 1203 is in contact with the air duct 1, and the friction block 1203 is fixedly connected with an extrusion column 1204, and the extrusion column 1204 is limited to slide in the limiting groove of the rotating ring 1202.

[0060] In the above solution, the number of arc-shaped plates 1201 is four, and the four arc-shaped plates 1201 are evenly distributed circumferentially to make the rotation of the rotating ring 1202 more stable. An arc-shaped notch is provided on the outer side of the rotating ring 1202 for facilitating the screwing of the rotating ring 1202. The center of the limiting groove of the rotating ring 1202 is offset from the center of the rotating ring 1202, which is used to make the extrusion column 1204 drive the friction block 1203 to slide along the adjacent limiting grooves on the rotating ring 1202. The limiting groove of the rotating ring 1202 is composed of two C-shaped through holes and an arc-shaped through hole on both sides. Among them, the arc-shaped through hole on the rotating ring 1202 is made of an elastic material, and the width of the arc-shaped through hole of the rotating ring 1202 is smaller than the width of the opening of the C-shaped through hole and smaller than the diameter of the extrusion column 1204. This is used to prevent the situation that the adjacent extrusion columns 1204 slide due to accidental contact with the rotating ring 1202 while the extrusion column 1204 slides along the adjacent limiting grooves on the rotating ring 1202. The friction block 1203 contacts the long sliding groove of the air duct 1, and a number of friction strips are provided on the contact surface between the friction block 1203 and the long sliding groove of the air duct 1. The extrusion column 1204 is composed of a limiting rod and two limiting rings, and the two limiting rings are used to strengthen the limiting of the rotating ring 1202 in the up and down directions.

[0061] When using this device to sample oleic acid in an oil storage barrel, the staff first adjusts the distance between the second sliding disk 1102 and the first sliding disk 1001 according to the position of the oleic acid taken under the oleic acid liquid level to change the limit position when the oil inlet of the sample storage cylinder 3 is below the liquid level.

[0062] When it is necessary to adjust the second sliding disk 1102, first, the staff rotates the rotating ring 1202 clockwise (viewed from the perspective of a top view). The clockwise rotation of the rotating ring 1202 changes the position of its limiting groove with respect to the extrusion column 1204. The extrusion column 1204 slides in a direction away from the center of the rotating ring 1202, and the extrusion column 1204 drives the friction block 1203 to slide in a direction away from the center of the rotating ring 1202, releasing the friction of the friction block 1203 on the long sliding groove of the air duct 1. Subsequently, the second sliding disk 1102 is dragged up or down until the desired position is reached.

[0063] Taking the example of dragging the second sliding disk 1102 downward for description, the downward sliding of the second sliding disk 1102 drives the four fixed shells 1103 to move downward. The downward movement of the four fixed shells 1103 respectively drives the four rollers 1104 inside them to move downward. When the adjacent four rollers 1104 move downward, they rotate and squeeze the adjacent connecting ropes 7, changing the position where the adjacent connecting ropes 7 are bent. Dragging the second sliding disk 1102 upward is the same as the above action, but the movement direction is opposite. By adjusting the position of the second sliding disk 1102, the distance from the oil inlet of the sample storage cylinder 3 to the oleic acid liquid level is determined.

[0064] After adjusting the second sliding disk 1102 to the specified position, rotate the rotating ring 1202 counterclockwise (from a top view perspective). The rotating ring 1202 squeezes the squeezing column 1204, causing the friction block 1203 to re-squeeze the long slide groove on the air guide tube 1, thereby locking the position of the second sliding disk 1102 to prevent the second sliding disk 1102 and the air guide tube 1 from sliding relative to each other during use.

[0065] After completing the above steps, the staff holds the handle 2 and vertically inserts the device into the storage tube. When the device gradually penetrates into the storage tube, the lowermost ends of the four toggle plates 1003 first contact the oleic acid at the liquid surface. As the four toggle plates 1003 continue to move downward, the oleic acid at the liquid surface moves around along the outer surfaces of the four toggle plates 1003, so that the oil inlet of the sample storage tube 3 directly contacts the oleic acid below the liquid surface. As the toggle plates 1003 move downward, the adjacent floats 1005 are driven downward through the adjacent fixed ropes 1004. When the floats 1005 contact the oleic acid liquid surface, the four toggle plates 1003 stop moving downward under the drive of the buoyancy of the adjacent floats 1005. The toggle plate 1003 keeps the adjacent connecting rod 1002 still, and the four connecting rods 1002 together keep the first sliding disk 1001 still. At this time, the staff continues to drive the handle 2 to move downward, the handle 2 drives the air guide tube 1 to move downward, the air guide tube 1 drives the sample storage tube 3 to move downward, the sample storage tube 3 drives the four squeezing rods 1007 to move downward, the four squeezing rods 1007 move downward for a distance, and after the oil inlet of the sample storage tube 3 is below the oleic acid liquid level, the four squeezing rods 1007 squeeze the adjacent toggle plates 1003 respectively, and the toggle plates 1003 are squeezed to swing outward, and at the same time, the two second elastic members 1006 adjacent to the toggle plate 1003 accumulate force.

[0066] When the squeezing rod 1007 continues to move downward a certain distance and releases the squeezing on the adjacent toggle plate 1003, the toggle plate 1003 rotates in the opposite direction (opposite to the above-mentioned rotation direction) driven by the elastic force of the two adjacent second elastic members 1006, and finally squeezes the outer surface of the sample storage tube 3. When the upper side surface of the sample storage tube 3 passes the lowest end of the four toggle plates 1003, the toggle plates 1003 then squeeze the outer surface of the airway 1.

[0067] When the air duct 1 moves downward, the air duct 1 drives the four friction blocks 1203 to move downward through the friction force between the long slide groove and the adjacent friction blocks 1203. The four friction blocks 1203 drive the four fixed shells 1103 to move downward through the second sliding plate 1102. The fixed shells 1103 drive the four rollers 1104 therein to move downward. The four friction blocks 1203 move downward and drive the rotating ring 1202 to move downward through the four extrusion columns 1204.

[0068] When the air duct 1 moves downward, the air duct 1 drives the four fixing blocks 6 and the sample storage cylinder 3 to move downward. The sample storage cylinder 3 drives the four first sealing plates 4 to move downward through the eight first elastic members 5. The connecting rope 7 moves downward under the drive of the adjacent fixing blocks 6 and the first sealing plates 4, and the connecting rope 7 is in a taut state.

[0069] When the oil inlet of the sample storage cylinder 3 is about to reach the sampling position, the pressing member 1101 moves to the interval between the four adjacent rollers 1104 on the left and right and contacts the adjacent connecting rope 7. Subsequently, the pressing member 1101 presses the adjacent connecting rope 7. As the air duct 1 moves downward, the pressing member 1101 drives the part of the adjacent connecting rope 7 between the four adjacent rollers 1104 and the adjacent first sealing plate 4 to move upward relative to the air duct 1. The part of the connecting rope 7 between the four adjacent rollers 1104 and the adjacent first sealing plate 4 moves upward to drive the adjacent first sealing plate 4 to move upward. The movement of the first sealing plate 4 stretches the adjacent two first elastic members 5. The upward movement of the first sealing plate 4 releases the blockage of the oil inlet of the adjacent sample storage cylinder 3. Oleic acid enters the sample storage cylinder 3 through the four oil inlets of the sample storage cylinder 3, realizing the collection of oleic acid at the specified position and avoiding the situation that the sampling position deviates and the sample lacks representativeness.

[0070] When oleic acid enters the sample storage cylinder 3, the gas in the sample storage cylinder 3 flows out through the air duct 1. The floating ball 8 moves upward along with the liquid level of oleic acid in the sample storage cylinder 3, and when the sample storage cylinder 3 is filled with oleic acid, it blocks the air duct 1, ensuring that the amount of each oleic acid sample taken is the same and realizing the effect of quantitative feeding.

[0071] When the lower side of the second sliding disk 1102 contacts the upper side of the first sliding disk 1001, the first sealing plate 4 completely releases the blockage of the oil inlet of the adjacent sample storage cylinder 3. At this time, the staff stops pushing the handle 2 downward and waits for a period of time for the floating ball 8 to block the air duct 1, ensuring that the oleic acid in the sample storage cylinder 3 is in a full state and completing this sampling.

[0072] When this sampling is completed, the staff pulls the handle 2 upward. The handle 2 drives the air duct 1 and its attached parts to move upward. The pressing member 1101 moves downward relative to the air duct 1, gradually releasing the extrusion of the adjacent connecting rope 7. At the same time, the first sealing plate 4 gradually resets under the drive of the pulling force of the adjacent two first elastic members 5, and finally re-blocks the oil inlet of the adjacent sample storage cylinder 3.

[0073] When the air duct 1 moves upward, the toggle plate 1003 moves downward relative to the air duct 1. As the toggle plate 1003 moves downward, it gradually approaches and contacts the adjacent extrusion rod 1007. The four toggle plates 1003 swing outward respectively under the extrusion of the adjacent extrusion rods 1007. After the extrusion rod 1007 moves upward and releases the extrusion on the adjacent toggle plate 1003, the four toggle plates 1003 return to their initial positions and fit together again respectively under the drive of the adjacent two second elastic members 1006.

[0074] Finally, until the lowest end of the toggle plate 1003 leaves the liquid surface, the oleic acid sampling for this time and the recovery of this device are completed. Subsequently, this device is cleaned.

[0075] When the existing sampling device samples, since the size of the opening above the sampling device is fixed, and in order to ensure the sampling efficiency when sampling oleic acid at a distance from the oleic acid liquid surface, the diameter of the opening above is set relatively large. Therefore, when sampling oleic acid near the oleic acid liquid surface, the speed of oleic acid entering the sampling device from the opening above is too fast, resulting in some gas being impacted by the oleic acid to form bubbles. And because oleic acid continuously flows into the opening above, the bubbles are difficult to discharge in time, affecting the amount of oleic acid sample taken by the sampling device.

[0076] Example 2: On the basis of Example 1, as Figures 9-11 shown, it further includes: an adjusting assembly, arranged on the air duct 1. The adjusting assembly is used to adjust the flow area of the air duct 1. The adjusting assembly includes: a second sealing plate 1301, fixedly connected to the inner wall of the air duct 1. A ventilation plate 1302 is slidably connected to the second sealing plate 1301. The ventilation plate 1302 is provided with ventilation holes. The ventilation plate 1302 is hermetically and slidably connected to the inner wall of the air duct 1; a fixing plate 1303, fixedly connected to the inner wall of the air duct 1. A third elastic member 1304 is fixedly connected between the ventilation plate 1302 and the fixing plate 1303.

[0077] In the above solution, the second sealing plate 1301 is composed of a cross plate and a frustum block. The ventilation plate 1302 is composed of a rotating column, a ring and a ventilation disc. The ventilation holes of the ventilation plate 1302 are located on its ventilation disc. The ring of the ventilation plate 1302 is located on the lower side of the ventilation disc, used to make there be a gap between the lower side of the ventilation disc of the ventilation plate 1302 and the upper side of the second sealing plate 1301, and make there be a gap between the frustum block of the second sealing plate 1301 and the ventilation holes of the ventilation plate 1302. The third elastic member 1304 is a spring.

[0078] After the oil inlet of the sample storage cylinder 3 is opened, oleic acid enters the sample storage cylinder 3 from the oil inlet of the sample storage cylinder 3, and extrudes the gas in the sample storage cylinder 3, causing the gas to be discharged from the air duct 1. When the oil inlet of the sample storage cylinder 3 is at different depths below the liquid surface, the speed of oleic acid entering the sample storage cylinder 3 is different, and thus the exhaust speed is different.

[0079] Taking the case where the oil inlet of the sample storage cylinder 3 is far from the oleic acid liquid level as an example, affected by the oleic acid pressure, the speed of the oleic acid entering the oil inlet of the sample storage cylinder 3 is fast. Therefore, the speed of the gas discharged from the air duct 1 is fast, and the ventilation plate 1302 moves upward under the thrust of the gas, increasing the gap between the ventilation plate 1302 and the second sealing plate 1301 and compressing the third elastic member 1304, increasing the exhaust volume per unit time to prevent the speed of the oleic acid entering the oil inlet of the sample storage cylinder 3 from being too slow and affecting the sampling speed.

[0080] When the oil inlet of the sample storage cylinder 3 is close to the oleic acid liquid level, the upward movement distance of the ventilation plate 1302 decreases, and the size of the gap between the ventilation plate 1302 and the second sealing plate 1301 is adaptively changed according to the position of the oil inlet of the sample storage cylinder 3 to ensure that the oleic acid smoothly enters the sample storage cylinder 3.

[0081] When the floating ball 8 blocks the air duct 1, the ventilation plate 1302 resets under the action of the elastic force of the third elastic member 1304.

[0082] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sampling device suitable for oleic acid production detection, comprising: Airway (1); A handle (2) fixedly connected to the airway tube (1); A sample storage cylinder (3) fixedly connected to and communicated with the air guide tube (1); It is characterized by further comprising: A plurality of first blocking plates (4) are sealingly and slidably connected to the sample storage cylinder (3); the sample storage cylinder (3) is provided with an oil inlet corresponding to the first blocking plate (4); the first blocking plate (4) is used to block the oil inlet adjacent to the sample storage cylinder (3); a first elastic member (5) is fixedly connected between the sample storage cylinder (3) and the first blocking plate (4); A plurality of fixing blocks (6) are fixedly connected to the air guide tube (1), and a connecting rope (7) is fixedly connected between the fixing blocks (6) and the first blocking plate (4) adjacent to each other. A floating ball (8) is arranged in the sample storage tube (3) and is used to block the air guide tube (1); A shielding component is arranged on the air guide pipe (1), and is used to shield oleic acid at the liquid surface.

2. A sampling device suitable for oleic acid production detection according to claim 1, characterized in that: The air guide tube (1) is composed of a cylinder and a truncated cone ring. The truncated cone ring of the air guide tube (1) is fixedly connected to the sample storage tube (3). The diameter of the truncated cone ring of the air guide tube (1) gradually increases from a side close to the cylinder of the air guide tube (1) to a side away from the cylinder of the air guide tube (1). The diameter of the float (8) is larger than the minimum diameter of the truncated cone ring of the air guide tube (1), and the diameter of the float (8) is smaller than the maximum diameter of the truncated cone ring of the air guide tube (1).

3. A sampling device suitable for oleic acid production detection according to claim 2, characterized in that: The shielding component comprises: A first sliding plate (1001) is slidably connected to the air guide tube (1); the first sliding plate (1001) is fixedly connected to a plurality of connecting rods (1002); the connecting rods (1002) are rotatably connected to a toggle plate (1003); adjacent toggle plates (1003) are in contact with each other; the toggle plates (1003) are fixedly connected to a fixing rope (1004); the fixing rope (1004) is fixedly connected to a float (1005); and a second elastic member (1006) is fixedly connected between the connecting rod (1002) and the toggle plate (1003); Extrusion rods (1007), the number of which is the same as the number of the connecting rods (1002), are fixedly connected to the sample storage cylinder (3), and the extrusion rods (1007) are used to squeeze the adjacent toggle plates (1003); A second sliding plate (1102) slidably connected to the air guide tube (1); Unsealing components, the number of which is the same as the number of the first blocking plates (4), and which are arranged on the first sliding plate (1001), and the unsealing components are used to automatically release the blockage of the first blocking plate (4) on the adjacent oil inlet of the sample storage cylinder (3); A locking component is arranged on the air duct (1), and is used to lock the position of the second sliding plate (1102) on the air duct (1).

4. A sampling device suitable for oleic acid production detection according to claim 3, characterized in that: The squeezing rod (1007) is tilted downwardly on a side away from the sample storage cylinder (3).

5. A sampling device suitable for oleic acid production detection according to claim 3, characterized in that: The decapsulation component comprises: An extrusion member (1101) is fixedly connected to the first sliding plate (1001), and the extrusion member (1101) is used for extruding the adjacent connecting rope (7); The fixed shell (1103) is fixedly connected to the second sliding plate (1102), and the fixed shell (1103) is rotatably connected to a plurality of rollers (1104), and the rollers (1104) are in contact with the adjacent connecting ropes (7).

6. A sampling device suitable for oleic acid production detection according to claim 5, characterized in that: The height of the extrusion piece (1101) is greater than the height of the oil inlet of the sample storage cylinder (3).

7. A sampling device suitable for oleic acid production detection according to claim 5, characterized in that: The center line of the fixed shell (1103) and the center line of the extruded member (1101) are located on the same vertical plane.

8. A sampling device suitable for oleic acid production detection according to claim 5, characterized in that: The locking assembly comprises: There are several arc-shaped plates (1201), which are fixedly connected to the second sliding plate (1102) in the circumferential direction. The arc-shaped plates (1201) are connected to a rotating ring (1202) for rotation together. The rotating ring (1202) is provided with a limiting groove. A friction block (1203) is slidably connected to the second sliding disk (1102), the friction block (1203) is in contact with the air guide tube (1), and the friction block (1203) is fixedly connected with an extrusion column (1204), and the extrusion column (1204) is limitedly slidable in the limit groove of the rotating ring (1202).

9. A sampling device suitable for oleic acid production detection according to claim 8, characterized in that: The limiting groove of the rotating ring (1202) is arc-shaped, and the center of a circle corresponding to the limiting groove of the rotating ring (1202) is misaligned with the center of a circle of the rotating ring (1202).

10. A sampling device suitable for oleic acid production detection according to claim 1, characterized in that: Also includes: An adjustment component is arranged on the air duct (1), the adjustment component is used to adjust the flow area of ​​the air duct (1), and the adjustment component comprises: A second blocking plate (1301) is fixedly connected to the inner wall of the air guide tube (1); the second blocking plate (1301) is slidably connected to a ventilation plate (1302); the ventilation plate (1302) is provided with ventilation holes; the ventilation plate (1302) is sealingly slidably connected to the inner wall of the air guide tube (1); The fixing plate (1303) is fixedly connected to the inner wall of the air guide tube (1), and a third elastic member (1304) is fixedly connected between the ventilation plate (1302) and the fixing plate (1303).

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