CN-224231333-U - Grain sampling shrinkage dividing device and grain sampling system

CN224231333UCN 224231333 UCN224231333 UCN 224231333UCN-224231333-U

Abstract

The utility model discloses a grain sampling shrinkage device and a grain sampling system in the technical field of grain sampling shrinkage, comprising a mixing mechanism and a sampling mechanism, wherein the sampling mechanism comprises a tripod shell, the tripod shell is provided with a grain inlet communicated with the mixing mechanism, a support plate is fixedly connected in the tripod shell through a plurality of partition plates, the tripod shell is provided with a parallel sample chamber, a sample preparation chamber and a sample inspection chamber, the plurality of partition plates are arranged on the outer side of the support plate to form a plurality of feeding grid openings, the plurality of feeding grid openings are divided into three groups respectively communicated with the parallel sample chamber, the sample preparation chamber and the sample inspection chamber, the support plate is connected with a cone, and the tripod shell is provided with a first material dividing pipe, a second material dividing pipe and a third material dividing pipe. The grain sampling dividing device enables mixed sampling grains to be divided into three parts in proportion according to requirements, reduces the occurrence of the condition that a certain sample cannot be detected due to uneven division, and enables detection results of three groups of sample grains to be relatively close.

Inventors

MA HAORAN
GUO FENGMIN
YANG CHAO
Zhao Guochuan
TANG QILIN
RONG YUN
LIU XIN
ZHOU YANG
LIU WEI
YANG BO
HE BO
LI BING
LI YIBO

Assignees

中储粮成都储藏研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260410

Claims (10)

1. The grain sampling shrinkage device comprises a mixing mechanism (1) and a sampling mechanism (2) which are sequentially communicated from top to bottom along the gravity direction, wherein the mixing mechanism (1) is used for mixing grains sampled for a plurality of times, the grain sampling shrinkage device is characterized in that the sampling mechanism (2) comprises a tripod shell (21), a grain inlet (211) which is communicated with the mixing mechanism (1) is formed in the upper end of the tripod shell (21), a supporting plate (22) is fixedly connected to the upper part in the tripod shell (21) through a plurality of partition plates (23), a parallel sample chamber (25), a sample preparation chamber (26) and a test sample chamber (27) are hermetically arranged on one side, far away from the grain inlet (211), of the tripod shell (21), a plurality of partition plates (23) are circumferentially and equidistantly distributed on the outer side of the supporting plate (22) to form a plurality of feed grid openings (24), the feed grid openings (24) are divided into three groups which are correspondingly communicated with the parallel sample chamber (25), the sample preparation chamber (26) and the test sample chamber (27) respectively according to preset quantity values, the three groups of the supporting plate (22) are fixedly connected with the first cone (28) which is near one side, near the supporting plate (22) which is fixedly connected with the first cone (21) and the lower cone (28) which is fixedly connected with the first cone (21) which is connected with the lower cone (28) of the main body (21), and the first cone (28) which is fixedly connected with the first cone (28) and the second cone (28) which is connected with the main body A second distribution pipe (213) communicated with the sample preparation chamber (26) and a third distribution pipe (214) communicated with the test sample chamber (27).
2. The grain sampling and dividing device according to claim 1, wherein the supporting plate (22) is an annular plate, the diameter of the bottom surface of the cone (28) is equal to the outer diameter of the annular plate, and the bottom surface of the cone (28) is provided with a weight reducing groove (281).
3. The grain sampling and dividing device according to claim 1, wherein the mixing mechanism (1) comprises a separating sample bin (11), the separating sample bin (11) comprises a bin body (111), an opening (1111) is formed in the upper end of the bin body (111), a first separating funnel (112) is embedded in the opening (1111), a second separating funnel (113) arranged in the bin body (111) is communicated with the first separating funnel (112), a rotating shaft (114) is arranged below a discharge hole of the second separating funnel (113) in the bin body (111), a separating plate (115) is fixedly sleeved on the rotating shaft (114), the separating plate (115) divides the lower portion of the bin body (111) into two grain cavities, a grain shrinking pipeline (117) and a grain returning pipeline (116) which are respectively communicated with the two grain cavities are arranged at the lower end of the bin body (111), and the grain shrinking pipeline (117) is communicated with the grain inlet (211).
4. The grain sampling and dividing device according to claim 3, wherein a constant volume tank body (12) is communicated between the separating sample bin (11) and the tripod shell (21), the upper end of the constant volume tank body (12) is communicated with the grain shrinking pipeline (117), the lower end of the constant volume tank body is communicated with the grain inlet (211), a gate valve assembly (13) is arranged between the constant volume tank body (12) and the grain inlet (211), a residual material pipe (14) is communicated at the position, close to the upper end, of the annular side of the constant volume tank body (12), the residual material pipe (14) is obliquely arranged, an included angle between the axis of the residual material pipe (14) and the central axis of the constant volume tank body (12) is an acute angle, the higher end of the residual material pipe (14) is communicated with the constant volume tank body (12) in the gravity direction, and the lower end of the residual material pipe is communicated with the side wall of the grain returning pipeline (116).
5. The grain sampling and dividing device according to claim 4, wherein the gate valve assembly (13) comprises a gate valve body (131) arranged between the constant volume tank body (12) and the tripod shell (21), the gate valve body (131) is provided with a circulation port (1311), a pair of gate valve side plates (132) respectively arranged at two sides of the circulation port (1311) are arranged between the gate valve body (131) and the constant volume tank body (12), the pair of gate valve side plates (132) are oppositely arranged to form a gate passage (133), and a gate (134) for closing or opening the circulation port (1311) is arranged in the gate passage (133) in a reciprocating sliding manner.
6. The grain sampling and dividing device according to claim 5, wherein the included angle between the central axis of the residual material pipe (14) and the central axis of the constant volume tank body (12) is 45 degrees.
7. The grain sampling system comprises a control module and a sampling machine (4) electrically connected with the control module, and is characterized by comprising a cabinet body (5) and a negative pressure generating device (62) arranged in the cabinet body (5), wherein the grain sampling dividing device according to any one of claims 1-6 is arranged in the cabinet body (5), the negative pressure generating device (62) and the grain sampling dividing device are electrically connected with the control module, a collecting tank assembly (7) is arranged in the cabinet body (5), the collecting tank assembly (7) comprises a first collecting tank (71) communicated with a first distributing pipe (212), a second collecting tank (72) communicated with a second distributing pipe (213) and a third collecting tank (73) communicated with a third distributing pipe (214), a second material pipe (74) and a first air inlet pipe (77) are communicated with the lower end of the first collecting tank (71), a second material pipe (75) and a second air inlet pipe (78) are respectively arranged in communication with the lower end of the second collecting tank (72), and a third air inlet pipe (77) are communicated with the lower end of the third collecting tank (73), and the third air inlet pipe (77) is communicated with the third air inlet pipe (79).
8. The grain sampling system according to claim 7, wherein a first pipeline switching assembly (8) is arranged in the cabinet body (5), the first pipeline switching assembly (8) comprises a first mounting plate (81), two material selecting openings (82) are formed in the first mounting plate (81) at intervals along the width central axis direction of the first mounting plate, the first material pipe (74) and the third material pipe (76) are respectively communicated with the two material selecting openings (82), a first guide piece (83) is arranged on the upper side surface of the first mounting plate (81) in a sliding mode along the width central axis direction of the first mounting plate, a discharging pipe (84) with the lower end surface being attached to the upper side surface of the first mounting plate (81) is penetrated through the first guide piece (83), a first switching cylinder (85) electrically connected with the control module is fixedly arranged on the first mounting plate (81), the first switching cylinder (85) is used for driving the first guide piece (83) to slide, and further the material obtaining pipe (84) is communicated with one of the two material selecting openings (82), and a first ball valve is arranged in the discharging pipe (84).
9. The grain sampling system according to claim 8, wherein a second pipeline switching assembly (9) is arranged in the cabinet body (5), the second pipeline switching assembly (9) comprises a second mounting plate (91), two air selecting ports (92) are formed in the second mounting plate (91) at intervals along the width central axis direction of the second mounting plate, the first air inlet pipe (77) and the third air inlet pipe (79) are respectively communicated with the two air selecting ports (92), a second guide piece (93) is slidably arranged on the upper side surface of the second mounting plate (91) along the width central axis direction of the second mounting plate, the second guide piece (93) penetrates through an air outlet pipe (94) with the lower end face attached to the upper side surface of the second mounting plate (91), one end, away from the second mounting plate (91), of the air outlet pipe (94) is communicated with the negative pressure generating device (62), a second switching cylinder (95) electrically connected with the control module is fixedly arranged on the second mounting plate (91), the second switching cylinder (95) is used for driving the second guide piece (93) to slide, and then the air outlet pipe (94) is communicated with one of the two air selecting ports (92), and the second air outlet pipe (94) is internally provided with a second ball valve (94).
10. The grain sampling system according to claim 9, further comprising a dust collection structure (6), wherein the dust collection structure (6) comprises a dust collection tank body (61), the air outlet pipe (94) is communicated with the dust collection tank body (61), the negative pressure generating device (62) is fixedly arranged on the annular side of the dust collection tank body (61), the negative pressure generating device (62) is communicated with the upper end of the dust collection tank body (61), and a dust collection filter element (63) is arranged in the dust collection tank body (61).

Description

Grain sampling shrinkage dividing device and grain sampling system Technical Field The utility model relates to the technical field of grain sampling division, in particular to a grain sampling division device and a grain sampling system. Background The grain sampling division is to collect representative original samples from a large amount of grains and gradually reduce the representative original samples to special equipment for small samples meeting the weight required by laboratory detection, so that the small samples finally sent to the laboratory can represent the average quality condition of the whole grains to the maximum extent, and the representativeness, the accuracy and the reliability of the detection result are ensured. At present, 3 samples, namely, parallel samples (standby samples can be used for rechecking or disputed processing), standby samples (reserved samples are used for reserved files) and test samples (for actual test) are required to be formed in three parts, so that the representativeness and traceability of the detection result are ensured. The Chinese patent application with the publication number of CN120063819A is named as a mixed sampling system, which comprises a sampling machine, a negative pressure bin, a first conveying pipeline, a mixing mechanism, a second conveying pipeline and a sample dividing mechanism, wherein the sampling machine is provided with a sampling pipe for sampling raw grains, negative pressure is formed in the negative pressure bin, and the negative pressure bin is communicated with the sampling pipe through the first conveying pipeline, so that independent sampling, sample mixing and sample dividing functions are realized, and samples can be divided into waste materials and samples to be detected. However, the mixed sample can be divided into two kinds of waste materials and samples to be detected, and the amount of the divided waste materials and samples to be detected cannot be controlled, namely, the samples cannot be divided into three parts of parallel samples, standby samples and test samples in a constant volume mode, and if the requirements of the three samples are different, the earlier-stage division is unreasonable, and the later-stage certain sample amount is insufficient or more, so that inconvenience is brought, and even the final detection result is influenced. Disclosure of utility model In order to overcome the defects in the prior art, the utility model aims to solve the technical problem of dividing the mixed sample into three parts according to the need. The technical scheme adopted for solving the technical problems is as follows: grain sampling shrinkage device, including along the mixed mechanism and the branch appearance mechanism of gravity direction top-down intercommunication in order, mixed mechanism is used for mixing the grain of many times sampling, above-mentioned branch appearance mechanism includes the tripod casing, the grain inlet with mixed mechanism intercommunication is seted up to tripod casing upper end, upper portion department is through a plurality of partition plate fixedly connected with backup pad in the tripod casing, the tripod casing is located the backup pad and keeps away from the one side of grain inlet and seal and be equipped with parallel appearance cavity, prepare appearance cavity and inspection appearance cavity, a plurality of partition plates are laid in its outside along backup pad circumference equidistant and are formed a plurality of feeding grille mouths, a plurality of feeding grille mouths divide into with parallel appearance cavity respectively with the value of predetermineeing the quantity and correspond three groups of intercommunication, prepare appearance cavity and inspection appearance cavity, backup pad is close to grain inlet one side fixedly connected with the cone, the axis of cone is collinear with the axis of grain inlet, tripod casing lower extreme detachably is equipped with the first branch pipe with parallel appearance cavity intercommunication, the second branch pipe with prepare appearance cavity intercommunication and the third branch pipe with inspection appearance cavity intercommunication. Further, the supporting plate is an annular plate, the diameter value of the bottom surface of the cone is equal to the outer diameter value of the annular plate, and the bottom surface of the cone is provided with a weight reduction groove. Further, above-mentioned mixing mechanism includes separation appearance storehouse, above-mentioned separation appearance storehouse includes the storehouse body, storehouse body upper end is equipped with the opening, the opening inlays and is equipped with first separation appearance funnel, first separation appearance funnel intercommunication has the second separation appearance funnel of locating in the storehouse body, the below that is located second separation appearance funnel discharge gate in the storehouse body is equipped w