Sample splitter for grain and oil food detection and related detection method
By designing a sampler for grain, oil and food detection, the spiral blades and through-hole structures can be used to synchronize sampling, sampling and cleaning, which solves the problem of inefficient detection in the prior art and improves the detection efficiency.
Patent Information
- Application Number
- CN202510252348.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2025-04-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, sampling and sampling operations are required before testing of grain, oil and food, resulting in low detection efficiency.
A sampler for grain, oil and food detection is designed. The sampling and sample separation are synchronized through the sampling cylinder and the spiral blade driven by the DD motor. The spiral blade divides grain, oil and food into standard particles, small grain and fragments, and removes debris and dust through the through hole and leaking port structure.
It realizes synchronous sampling and cleaning of debris and dust during the sampling process, optimizes the detection process and improves the detection efficiency.
Smart Images
Figure CN119827221A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of grain detection, and in particular to a sample divider for grain and oil food detection and a related detection method. Background Art
[0002] Cereals and oils are easily invaded by mold and pests during storage. In order to ensure the quality of cereals and oils in storage warehouses, it is necessary to regularly test the cereals and oils in storage warehouses. Before the existing testing, the cereals and oils need to be sampled first, then the cereals and oils are sampled, and the debris and dust in the cereals and oils are cleaned before the testing operation. Since the sampling and sampling operations are performed separately, the existing regular testing of cereals and oils has low testing efficiency. Summary of the invention
[0003] In order to overcome the shortcoming that sampling and sample dividing operations are performed separately, resulting in low detection efficiency when regular grain and oil food detection is performed, the present invention provides a sample divider for grain and oil food detection and a related detection method.
[0004] Technical solution: A sample divider for grain and oil food testing, comprising a sampling tube, an electric push rod, a connecting rod 1 and a shielding door; an opening is provided on the sampling tube; a compartment space is provided on the sampling tube; an electric push rod with a telescopic portion facing downward is fixedly connected in the compartment space; a connecting rod 1 is fixedly connected to the telescopic portion of the electric push rod; a shielding door for opening and closing the opening is fixedly connected to the connecting rod 1, and the shielding door is slidably connected to the sampling tube; a collecting frame, a DD motor, a connecting rod 2, a spiral blade, a circular plate and an arc plate are also provided; a cavity is provided on the sampling tube; the sampling tube is detachably connected to the collecting frame, and the collecting frame is connected to the collecting frame. The cavity is connected; the bottom of the collecting frame is in a pointed cone shape; a plurality of through holes 1 are provided on the inner side of the sampling tube, and the through holes 1 are connected to the cavity; a DD motor is fixedly connected in the interlayer space; a connecting rod 2 is fixedly connected to the rotating part of the DD motor, and the bottom of the connecting rod 2 passes through the bottom surface of the sampling tube; a spiral blade is fixedly connected to the connecting rod 2, and the spiral blade is located in the sampling tube; a circular plate is detachably connected in the collecting frame, and a plurality of leakage ports are provided on the circular plate, and the bottom of the connecting rod 2 is supported on the upper surface of the circular plate; a plurality of arc plates are fixedly connected to the bottom of the connecting rod 2, and the bottom surfaces of all the arc plates are in contact with the upper surface of the circular plate.
[0005] Furthermore, all the through holes are arranged obliquely downward.
[0006] Furthermore, it also includes a swivel, a connecting rod three and a baffle; the outer side of the sampling tube is connected to the swivel in a damped rotation manner; the swivel is fixedly connected to a plurality of connecting rods three, and all the connecting rods three are located in the cavity; each connecting rod three is fixedly connected to a plurality of baffles, and each baffle is provided with a plurality of through holes two, and the through holes two are the same size as the through holes one; there is a gap between the baffle and the cavity, and the gap between the baffle and the through hole one is narrow, and all the connecting rods three and the baffles are made of deformable rubber material.
[0007] Furthermore, it also includes a lever 1; a plurality of levers 1 are fixedly connected to the connecting rod 2, and all the levers 1 are staggered; a circular hole is opened on the bottom surface of the sampling tube, and the sampling tube is connected with the collection frame through the circular hole.
[0008] Furthermore, it also includes a connecting ring, a protruding rod and a spring; a plurality of connecting rings are fixedly connected inside the sampling tube; a protruding rod is slidably connected to the middle of each connecting ring, and all the protruding rods are located inside the sampling tube with one end facing the inside of the sampling tube, and all the levers are in the same horizontal plane with the corresponding protruding rods; a spring is fixedly connected between each connecting ring and the corresponding protruding rod.
[0009] Furthermore, it also includes a shifting block; a plurality of annular grooves are opened on the circular plate; a plurality of shifting blocks are fixedly connected to the bottom of each arc-shaped plate, each shifting block slides in the corresponding annular groove, and each annular groove is connected to the corresponding leakage port.
[0010] Furthermore, each leakage opening is provided with an inclined surface.
[0011] Furthermore, it also includes a ball; the bottom of the collection frame is detachably connected with the ball.
[0012] Furthermore, it also includes an elastic telescopic rod, a round rod, a baffle, two springs, an arc-shaped convex plate and two levers; the collection frame is fixedly connected to the elastic telescopic rod with the telescopic portion facing upward; the telescopic portion of the elastic telescopic rod is slidably connected to the round rod; the baffle is fixedly connected to the end of the round rod facing the shielding door, and the shielding door and the baffle are aligned up and down; two springs are fixedly connected between the elastic telescopic rod and the round rod; the arc-shaped convex plate is fixedly connected to the end of the round rod facing away from the shielding door; a plurality of levers are fixedly connected to the second connecting rod, and all the levers are in contact with the bottom surface of the sampling tube.
[0013] A method for detecting grain and oil food comprises the following steps: Step 1: sampling, sample division and cleaning of debris and dust, wherein sampling, sample division and cleaning of debris and dust are performed simultaneously by the sample divider of the present invention; Step 2: Water loss test: put part of the sample into a drying oven, dry it to constant weight at a temperature of about 30°C, and calculate the water loss rate; Step 3: Fat content detection: extract fat from part of the sample with an organic solvent (such as ether or petroleum ether), then evaporate the solvent and weigh the remaining fat content; Step 4: Compare the test results with the judgment criteria. If the test results are unqualified, immediate action must be taken and the test results and related data must be saved.
[0014] The present invention has the following advantages: the present invention takes samples through a sampling tube, and after sampling, a DD motor is used to rotate a spiral blade to continuously move the grain and oil food in the sampling tube upward, so as to sample the grain and oil food, so that standard grain particles are retained in the sampling tube, and small grain particles and broken grains are retained in the collection frame. Different from the existing methods, the present invention can realize the simultaneous sampling operation of grain during the sampling process, optimize the detection process, and improve efficiency.
[0015] The present invention drives the debris dust upward by rotating the spiral blades, so that the debris dust can follow the small particles of grain and broken grains into the cavity through the through hole, and fall downward from the cavity to the circular plate in the collection frame, and then fall downward through the leakage port, so that the debris dust on the grain can be removed during the sampling operation, thereby improving the detection efficiency.
[0016] The present invention arranges a plurality of annular grooves on the circular plate so that when debris dust falls onto the circular plate, most of the debris dust will directly enter the annular grooves, thereby preventing the debris dust from mixing with small grain particles, insect-eaten grain and broken grains during the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of the sample divider for grain and oil food testing disclosed by the present invention; Figure 2 It is a structural cross-sectional view of the sampling tube and the connecting rod 3 disclosed in the sample divider for grain, oil and food testing of the present invention; Figure 3 It is a structural cross-sectional view of the collecting frame disclosed by the sample divider for grain, oil and food testing of the present invention; Figure 4 It is a structural cross-sectional view of the baffle disclosed by the sample divider for grain, oil and food testing of the present invention; Figure 5 It is a schematic structural diagram of the circular plate, the arc plate and the shifting block disclosed in the sample divider for grain and oil food detection of the present invention; Figure 6 for Figure 5 A magnified image of the area A in FIG. Figure 7 It is a structural schematic diagram of a lever 1, a connecting ring, a convex rod and a spring 1 disclosed in the sample divider for grain and oil food detection of the present invention; Figure 8 The present invention is a schematic structural diagram of an elastic telescopic rod, a round rod, a baffle, a second spring, an arc-shaped convex plate and a second lever disclosed in a sample divider for grain and oil food detection.
[0018] Parts names and serial numbers in the figure: 1-sampling tube, 2-collecting frame, 3-electric push rod, 4-connecting rod one, 5-shielding door, 6-DD motor, 7-connecting rod two, 8-spiral blade, 9-elastic telescopic rod, 10-round rod, 11-baffle, 12-spring two, 13-arc-shaped convex plate, 14-push rod two, 20-round ball, 21-swivel ring, 22-connecting rod three, 23-baffle, 24-push rod one, 25-connecting ring, 26-convex rod, 27-spring one, 28-round plate, 29-arc-shaped plate, 30-push block, 1001-cavity, 1002-through hole one, 1003-round hole, 101-interlayer space, 2301-through hole two, 2801-leakage port, 2802-annular groove, 2803-inclined surface, 111-opening. DETAILED DESCRIPTION
[0019] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0020] Example 1 A sampler for grain and oil food testing, such as Figure 1-Figure 8 As shown, it includes a sampling tube 1, an electric push rod 3, a connecting rod 4 and a shielding door 5; an opening 111 is opened on the sampling tube 1; the sampling tube 1 is provided with a compartment space 101; the electric push rod 3 with a telescopic portion facing downward is fixedly connected in the compartment space 101; the telescopic portion of the electric push rod 3 is fixedly connected to a connecting rod 4; the connecting rod 4 is fixedly connected to a shielding door 5, and the shielding door 5 is slidably connected to the sampling tube 1; It also includes a collecting frame 2, a DD motor 6, a connecting rod 7, a spiral blade 8, a circular plate 28 and an arc plate 29; the sampling tube 1 is provided with a cavity 1001; the sampling tube 1 is bolted with a collecting frame 2, and the collecting frame 2 is connected to the cavity 1001; the bottom of the collecting frame 2 is set in a pointed cone shape, which is convenient for inserting into the grain; the inner side of the sampling tube 1 is provided with a plurality of through holes 1002, and the through holes 1002 are connected to the cavity 1001; the DD motor 6 is fixedly connected in the interlayer space 101 ; The rotating part of the DD motor 6 is fixedly connected to a connecting rod 27, and the bottom of the connecting rod 27 passes through the bottom surface of the sampling tube 1; the connecting rod 27 is fixedly connected to a spiral blade 8, and the spiral blade 8 is located in the sampling tube 1; a circular plate 28 is detachably connected to the collecting frame 2, and a plurality of leakage ports 2801 are opened on the circular plate 28, and the bottom of the connecting rod 27 is supported by the upper surface of the circular plate 28; three arc plates 29 are fixedly connected to the bottom of the connecting rod 27, and the bottom surfaces of all the arc plates 29 are in contact with the upper surface of the circular plate 28.
[0021] All through holes 1002 are arranged obliquely downward to facilitate debris and dust to enter the cavity 1001 through the through holes 1002 .
[0022] It also includes a swivel 21, a connecting rod three 22 and a baffle 23; the outer side of the sampling tube 1 is connected to the swivel 21 in a damped rotation manner; the swivel 21 is fixedly connected to three connecting rods three 22, and all the connecting rods three 22 are located in the cavity 1001; each connecting rod three 22 is fixedly connected to three baffles 23 distributed up and down, and each baffle 23 is provided with a plurality of through holes two 2301, and the through holes two 2301 are the same size as the through holes one 1002; there is a gap between the baffle 23 and the cavity 1001, and the gap between the baffle 23 and the through hole one 1002 is narrow, and all the connecting rods three 22 and the baffles 23 are made of deformable rubber material.
[0023] It also includes a lever 24; three levers 24 are fixedly connected to the connecting rod 2 7, and all the levers 24 are staggered. A circular hole 1003 is provided on the bottom surface of the sampling tube 1, and the sampling tube 1 is connected with the collecting frame 2 through the circular hole 1003; when debris and dust enter the sampling tube 1, they fall directly into the collecting frame 2 through the circular hole 1003, thereby accelerating the separation speed.
[0024] It also includes a connecting ring 25, a protruding rod 26 and a spring 27; a plurality of connecting rings 25 are fixedly connected inside the sampling tube 1; a protruding rod 26 is slidably connected to the middle of each connecting ring 25, and all the protruding rods 26 are located inside the sampling tube 1 with one end facing the inside of the sampling tube 1, and all the levers 24 are in the same horizontal plane with the corresponding protruding rods 26; a spring 27 is fixedly connected between each connecting ring 25 and the corresponding protruding rod 26.
[0025] It also includes a shift block 30; a plurality of annular grooves 2802 are provided on the circular plate 28; a plurality of shift blocks 30 are fixedly connected to the bottom of each arc-shaped plate 29, each shift block 30 slides in the corresponding annular groove 2802, each annular groove 2802 is connected to the corresponding leakage port 2801, and the debris dust is quickly separated from the small grain particles, insect-eaten grain and broken grains through the annular groove 2802.
[0026] Each leakage port 2801 is provided with a slope 2803 . By providing the slope 2803 , when the shifting block 30 shifts the grain stuck in the leakage port 2801 , it is easier for the grain to escape from the leakage port 2801 along the slope 2803 .
[0027] It also includes a ball 20; the bottom of the collecting frame 2 is detachably connected to the ball 20. By setting the ball 20, it is prevented that the grain in the storage warehouse is punctured and damaged during the descent of the sampling tube 1 and the collecting frame 2.
[0028] First, manually connect the upper bolts of the sampling tube 1 to the gantry in the storage warehouse, and the gantry is connected to the sampling tube 1 through a lifting structure (such as an electric push rod for providing vertical driving force, etc.); when in use, the sampling tube 1 is moved above the grain and oil food through the gantry, and then the lifting structure is controlled to push the sampling tube 1 and the collecting frame 2 to move downward and insert them into the grain and oil food (such as granular grains such as rice, wheat and beans). When in use, manually control the downward movement distance of the sampling tube 1 and the collecting frame 2 through the lifting structure according to the required depth. After the sampling tube 1 and the collecting frame 2 move downward and are inserted into the grain and oil food, the lifting structure stops running, and then the electric push rod 3 pulls the shielding door 5 upward through the connecting rod 1-4 to open the opening 111 of the sampling tube 1, so that the grain and oil food enter the sampling tube 1, and then the electric push rod 3 pushes the shielding door 5 downward through the connecting rod 1-4 to open the opening of the sampling tube 1 111 is closed, and then the lifting structure on the gantry is controlled to pull the sampling tube 1 and the collecting frame 2 to reset upward. During the upward resetting process of the sampling tube 1 and the collecting frame 2, the DD motor 6 is synchronously controlled to drive the spiral blade 8 to rotate through the connecting rod 2 7, so that the spiral blade 8 continuously moves the grain and oil food in the sampling tube 1 upward, so that the small grain particles and broken particles in the grain and oil food pass through the through hole 1002 into the cavity 1001, and then the small grain particles and broken particles fall through the cavity 1001 to the circular plate 28 in the collecting frame 2. When the broken particles fall onto the circular plate 28, the broken particles fall downward through the leakage port 2801, and the small grain particles will remain on the circular plate 28. At this time, standard grain particles are retained in the sampling tube 1, and small grain particles and broken particles are retained in the collecting frame 2. In this way, different from the existing method, the present invention realizes the synchronous sampling operation of grain during the sampling process, optimizes the detection process, and improves efficiency.
[0029] At the same time, considering that some grains are infested with insects, and the volume of grains infested with insects is significantly reduced, during sampling, the infested grains will be discharged from the sampling tube 1 through the through hole 1002, thus reducing the time for subsequent manual selection and improving the detection efficiency.
[0030] Taking into account that there is a lot of debris and dust in the grain stored in the storage warehouse, the debris and dust need to be manually removed before testing, which affects the detection efficiency. Therefore, when the DD motor 6 drives the spiral blade 8 to rotate through the connecting rod 2 7, the debris and dust entering the sampling tube 1 will be pushed upward by the spiral blade 8, so that the debris and dust can follow the small particles of grain and broken particles into the cavity 1001 through the through hole 1002, and fall downward from the cavity 1001 to the circular plate 28 in the collecting frame 2, and then fall downward through the leakage port 2801, so that the debris and dust on the grain can be removed during the sampling operation, thereby improving the detection efficiency.
[0031] It should be noted that during the rotation of connecting rod 27, connecting rod 27 will drive the arc plate 29 to rotate synchronously, so that the arc plate 29 pushes the small particles of grain and debris dust on the circular plate 28 to rotate along the upper surface of the circular plate 28, and the arc plate 29 is used to ensure the screening of the small particles of grain and debris dust on the circular plate 28.
[0032] Considering that after the debris dust enters the cavity 1001 through the through hole 1002, it will float and diffuse in the cavity 1001, causing a large amount of debris dust to flow back into the sampling tube 1 through the through hole 1002 again. Therefore, before sampling, the rotating ring 21 is manually twisted to rotate the connecting rod 3 22 and the baffle 23, so that the through hole 1002 and the through hole 2 2301 are misaligned and misaligned, and there is a narrow gap between the baffle 23 and the through hole 1002, so that when the spiral blade 8 pushes the grain, the grain does not enter the cavity 1001 through the gap between the baffle 23 and the through hole 1002 first, and the debris dust first passes through the through hole 1002. 02 enters the gap between the through hole 1002 and the baffle 23, and then enters the cavity 1001 and the collection frame 2 in turn. Since the gap between the through hole 1002 and the baffle 23 is small, it is helpful to reduce the problem of debris dust backflowing into the sampling tube 1. Furthermore, since the through hole 1002 and the through hole 2 2301 are misaligned, the debris dust enters the gap between the through hole 1002 and the baffle 23 when discharged, which further reduces the problem of debris dust backflowing into the sampling tube 1. In addition, as the through hole 1002 continuously discharges debris dust, the discharged debris dust also blocks the backflow of debris dust.
[0033] When the DD motor 6 drives the spiral blade 8 to rotate through the connecting rod 2 7 , the connecting rod 2 7 drives the lever 1 24 to rotate synchronously, so that the lever 1 24 moves the grain in the sampling tube 1 , which is conducive to the discharge of debris and dust mixed in the grain through the through hole 1002 .
[0034] It is also taken into consideration that in order to prevent debris and dust from flowing back from the cavity 1001 into the sampling tube 1, the distance between the baffle 23 and the through hole 1002 is made smaller. Although the backflow problem is solved, the discharge of debris and dust is affected. Therefore, when the connecting rod 27 drives the lever 24 to rotate, the lever 24 will indirectly squeeze the protruding rod 26, so that the protruding rod 26 extends out of the connecting ring 25 to push the baffle 23, so that the distance between the baffle 23 and the through hole 1002 is expanded, and the debris and dust are prevented from being blocked between the baffle 23 and the through hole 1002. It should be noted that when the protruding rod 26 pushes the baffle 23, the spring 27 is compressed first, and when the lever 24 passes the protruding rod 26, the spring 27 pushes the protruding rod 26 to return to its original position.
[0035] When sampling is finished, the lifting structure on the gantry is manually controlled to pull the sampling tube 1 and the collection frame 2 upward to reset, and the sampling tube 1 and the collection frame 2 are manually removed from the gantry and transferred to the laboratory for testing. The rotating ring 21 is manually twisted first, so that the rotating ring 21 drives the connecting rod 3 22 and the baffle 23 to rotate in the opposite direction, so that the through hole 1002 is directly opposite to the through hole 2301. Figure 4 As shown, it should be noted that at this time, the DD motor 6 is still driving the connecting rod 2 7 and the spiral blade 8 to rotate, so that the sampling tube 1 and the collecting frame 2 are transferred to the laboratory for testing to perform sampling work, and the debris and dust are cleaned first during the sampling process, which reduces the burden of cleaning the debris and dust during the sampling process and is conducive to ensuring the cleaning effect of the debris and dust.
[0036] During the sampling process, although the debris and dust are cleaned first, a small amount of debris and dust still exists in the sampling process. When small grain particles, insect-eaten grains, broken grains and debris and dust fall onto the circular plate 28 through the cavity 1001, the small grain particles, insect-eaten grains, broken grains and debris and dust will mix together, resulting in dust adhering to the small grain particles on the circular plate 28, which still requires manual cleaning later. For this reason, a plurality of annular grooves 2802 are provided on the circular plate 28, so that when the debris and dust fall onto the circular plate 28, most of the debris and dust will directly enter the annular grooves 2802, thereby preventing the debris and dust from mixing with the small grain particles, insect-eaten grains and broken grains during the sampling process. When the arc plate 29 pushes the small grain particles, insect-eaten grains and broken grains to rotate for sampling, the arc plate 29 drives the shifting block 30 to slide along the corresponding annular grooves 2802, so that the shifting block 30 pushes the grain particles that fall onto the annular grooves 2802. The debris and dust in the groove 2802 move, and when the debris and dust pass through the leakage port 2801, they directly fall into the collecting frame 2 for collection; in addition, when the arc plate 29 pushes the small-grained grain, worm-eaten grain, and broken grains to rotate for sampling, the small-grained grain, worm-eaten grain, and broken grains will shake when passing through the annular groove 2802, and the debris and dust attached to their surfaces will fall into the annular groove 2802; it should be noted that when the arc plate 29 pushes the small-grained grain, worm-eaten grain, and broken grains to rotate for sampling, the small-grained grain and the worm-eaten grain will be stuck on the leakage port 2801. When the arc plate 29 drives the shifting block 30 to rotate to the leakage port 2801, the small-grained grain and the worm-eaten grain stuck on the leakage port 2801 are shifted out by the shifting block 30 to avoid blocking the leakage port 2801. At the same time, a slope 2803 is set at the leakage port 2801 to facilitate the small-grained grain and the worm-eaten grain to be shifted out by the shifting block 30.
[0037] Example 2 On the basis of Example 1, Figure 3 and Figure 8As shown, it also includes an elastic telescopic rod 9, a round rod 10, a baffle 11, a spring 12, an arc-shaped convex plate 13 and a lever 14; the collection frame 2 is fixedly connected to the elastic telescopic rod 9 with the telescopic portion facing upward; the telescopic portion of the elastic telescopic rod 9 is slidably connected to the round rod 10; the baffle 11 is fixedly connected to the end of the round rod 10 facing the shielding door 5, and the shielding door 5 is aligned with the baffle 11 up and down; the spring 12 is fixedly connected between the elastic telescopic rod 9 and the round rod 10; the arc-shaped convex plate 13 is fixedly connected to the end of the round rod 10 facing away from the shielding door 5; the connecting rod 7 is fixedly connected to six levers 14 with equal distances distributed in a ring, and all the levers 14 are in contact with the bottom surface of the sampling tube 1.
[0038] A method for detecting grain and oil food comprises the following steps: Step 1: sampling, sample division and cleaning of debris and dust, wherein sampling, sample division and cleaning of debris and dust are performed simultaneously by the sample divider of the present invention; Step 2: Water loss test: put some samples into a drying oven, dry them at about 105°C to constant weight, and calculate the water loss rate; Step 3: Fat content detection: extract fat from part of the sample with an organic solvent (such as ether or petroleum ether), then evaporate the solvent and weigh the remaining fat content; Step 4: Compare the test results with the judgment criteria. If the test results are unqualified, immediate action must be taken and the test results and related data must be saved.
[0039] Considering that the sampling tube 1, the collecting frame 2 and the shielding door 5 are all buried in the grain, the grain will be squeezed in the direction of the shielding door 5 during the sampling process, so that the grain will gather in the direction of the shielding door 5. When the electric push rod 3 drives the connecting rod 1 4 to push the shielding door 5 downward, the shielding door 5 and the bottom of the sampling tube 1 will get stuck with the grain, so that there is a gap between the shielding door 5 and the bottom of the sampling tube 1, so that the spiral blade 8 squeezes the grain in the sampling tube 1 during the process of rotating to clean debris and sampling, so that the grain in the sampling tube 1 is squeezed out from between the shielding door 5 and the sampling tube 1. , a baffle 11 is provided. When the shielding door 5 is initially closed, the upper end of the baffle 11 is flush with the upper surface of the opening 111, and the elastic telescopic rod 9 is in a compressed state. When the shielding door 5 rises, the baffle 11 is pushed by the elastic telescopic rod 9, so that the bottom of the baffle 11 is flush with the upper surface of the opening 111, and the upper surface of the arc-shaped convex plate 13 contacts the bottom surface of the sampling tube 1. When the shielding door 5 moves downward and closes, when the shielding door 5 contacts the baffle 11, the DD motor 6 is controlled to drive the connecting rod 2 7 and the spiral blade 8 to rotate, and the connecting rod 2 7 drives the lever 2 The arc convex plate 13 rotates synchronously, so that the second lever 14 indirectly pushes the arc convex plate 13 to move toward the opening 111, and the arc convex plate 13 drives the round rod 10 to move toward the opening 111, so that the round rod 10 drives the baffle 11 to move synchronously, so that the round rod 10 squeezes the second spring 12 to contract, and when the second lever 14 is separated from the arc convex plate 13, the second spring 12 pushes the round rod 10 to drive the baffle 11 and the arc convex plate 13 to reset, and so on, so that the baffle 11 swings back and forth, and the grain on the descending path of the shielding door 5 is pushed away, so as to prevent the grain particles from being caught by the moving shielding door The baffle plate 11 is squeezed by the shielding door 5, so that the shielding door 5 cannot be completely closed. As the electric push rod 3 continues to push the connecting rod 4 and the shielding door 5 downward, the shielding door 5 squeezes the baffle plate 11 to move downward and reset. The baffle plate 11 squeezes the elastic telescopic rod 9 to shrink. When the shielding door 5 fits with the bottom surface of the opening 111, the baffle plate 11 enters the collecting frame 2 again. It should be noted that during the reciprocating swinging of the baffle plate 11, there will be a gap between the baffle plate 11 and the bottom surface of the sampling tube 1 with the circular hole 1003, and this gap can only allow grain particles and debris dust to pass through.
[0040] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
Claims
1. A sample divider for testing grains, oils and foods, comprising a sampling tube (1), an electric push rod (3), a connecting rod (4) and a shielding door (5); the sampling tube (1) is provided with an opening (111); the sampling tube (1) is provided with a partition space (101); an electric push rod (3) with a telescopic portion facing downward is fixedly connected in the partition space (101); the telescopic portion of the electric push rod (3) is fixedly connected to the connecting rod (4); the connecting rod (4) is fixedly connected to the shielding door (5) for opening and closing the opening (111), and the shielding door (5) is slidably connected to the sampling tube (1); the characteristics are: It also includes a collecting frame (2), a DD motor (6), a second connecting rod (7), a spiral blade (8), a circular plate (28) and an arc plate (29); the sampling tube (1) is provided with a cavity (1001); the sampling tube (1) is detachably connected to the collecting frame (2), and the collecting frame (2) is in communication with the cavity (1001); the bottom of the collecting frame (2) is arranged in a pointed cone shape; a plurality of through holes (1002) are provided on the inner side surface of the sampling tube (1), and the through holes (1002) are in communication with the cavity (1001); a DD motor (6) is fixedly connected in the interlayer space (101); The rotating part of the D motor (6) is fixedly connected to a second connecting rod (7), the bottom of which penetrates the bottom surface of the sampling tube (1); the second connecting rod (7) is fixedly connected to a spiral blade (8), which is located in the sampling tube (1); a circular plate (28) is detachably connected to the inside of the collecting frame (2), a plurality of material leakage openings (2801) are provided on the circular plate (28), and the bottom of the second connecting rod (7) is supported by the upper surface of the circular plate (28); the bottom of the second connecting rod (7) is fixedly connected to a plurality of arc plates (29), and the bottom surfaces of all the arc plates (29) are in contact with the upper surface of the circular plate (28).
2. A sample divider for grain, oil and food testing according to claim 1, characterized in that: All through holes 1 (1002) are arranged obliquely downward.
3. A sample divider for grain, oil and food testing according to claim 1, characterized in that: The invention also comprises a rotating ring (21), a connecting rod three (22) and a baffle (23); the outer side of the sampling tube (1) is connected to the rotating ring (21) in a damping rotation manner; the rotating ring (21) is fixedly connected to a plurality of connecting rods three (22), and all the connecting rods three (22) are located in the cavity (1001); each connecting rod three (22) is fixedly connected to a plurality of baffles (23), and each baffle (23) is provided with a plurality of through holes two (2301), and the through holes two (2301) are the same size as the through holes one (1002); there is a gap between the baffle (23) and the cavity (1001), and the gap between the baffle (23) and the through hole one (1002) is narrow, and all the connecting rods three (22) and the baffles (23) are made of deformable rubber material.
4. A sample divider for grain, oil and food testing according to claim 1, characterized in that: It also includes a lever 1 (24); a plurality of levers 1 (24) are fixedly connected to the connecting rod 2 (7), and all the levers 1 (24) are staggeredly distributed; a circular hole (1003) is opened on the bottom surface of the sampling tube (1), and the sampling tube (1) is connected to the collection frame (2) through the circular hole (1003).
5. A sample divider for testing grain, oil and food according to claim 4, characterized in that: It also includes a connecting ring (25), a protruding rod (26) and a spring (27); a plurality of connecting rings (25) are fixedly connected inside the sampling tube (1); a protruding rod (26) is slidably connected to the middle of each connecting ring (25), and one end of all the protruding rods (26) facing the inside of the sampling tube (1) is located inside the sampling tube (1), and all the levers (24) are in the same horizontal plane as the corresponding protruding rods (26); a spring (27) is fixedly connected between each connecting ring (25) and the corresponding protruding rod (26).
6. A sample divider for testing grain, oil and food according to claim 1, characterized in that: It also includes a shifting block (30); a plurality of annular grooves (2802) are formed on the circular plate (28); a plurality of shifting blocks (30) are fixedly connected to the bottom of each arc-shaped plate (29); each shifting block (30) slides in a corresponding annular groove (2802); and each annular groove (2802) is connected to a corresponding material leakage port (2801).
7. A sample divider for testing grain, oil and food according to claim 6, characterized in that: Each material leakage opening (2801) is provided with an inclined surface (2803).
8. A sample divider for testing grain, oil and food according to claim 1, characterized in that: It also includes a round ball (20); the round ball (20) is detachably connected to the bottom of the collection frame (2).
9. A sample divider for testing grain, oil and food according to claim 8, characterized in that: The invention also comprises an elastic telescopic rod (9), a round rod (10), a baffle (11), a second spring (12), an arc-shaped convex plate (13) and a second lever (14); the collection frame (2) is fixedly connected to the elastic telescopic rod (9) with the telescopic portion facing upward; the telescopic portion of the elastic telescopic rod (9) is slidably connected to the round rod (10); the baffle (11) is fixedly connected to one end of the round rod (10) facing the shielding door (5), and the shielding door (5) and the baffle (11) are aligned vertically; the second spring (12) is fixedly connected between the elastic telescopic rod (9) and the round rod (10); the arc-shaped convex plate (13) is fixedly connected to one end of the round rod (10) facing away from the shielding door (5); a plurality of second levers (14) are fixedly connected to the second connecting rod (7), and all the second levers (14) are in contact with the bottom surface of the sampling tube (1).
10. A sample divider for testing grains, oils and foods according to claim 9, characterized in that: A method for detecting grain and oil food comprises the following steps: Step 1: sampling, sample division and cleaning of debris and dust, wherein sampling, sample division and cleaning of debris and dust are performed simultaneously by the sample divider of the present invention; Step 2: Water loss test: put part of the sample into a drying oven, dry it to constant weight at a temperature of about 30°C, and calculate the water loss rate; Step 3: Fat content detection: extract fat from part of the sample with an organic solvent (such as ether or petroleum ether), then evaporate the solvent and weigh the remaining fat content; Step 4: Compare the test results with the judgment criteria. If the test results are unqualified, immediate action must be taken and the test results and related data must be saved.