A deep grain sampler

Abstract

The invention discloses a deep grain sampler, which belongs to the technical field of grain storage equipment, and includes a sampler mainframe, a deep insertion component and a sampling component. The deep insertion component includes a deep insertion hose component, a multi-section middle pipe and a cannula that can be interconnected or separated from each other, one end of the deep insertion hose component can be connected to the sampler mainframe, and the other end can be directly connected to the cannula or connected to the cannula through the multi-section middle pipe; the sampling component includes a sampling hose and a sampler, one end of the sampling hose can be connected to the deep insertion hose component or to the air inlet of the sampler mainframe, and the other end can be connected to the sampler, and the sampling component can move between the multi-section middle pipe and the cannula. When the present invention is applied to deep grain sampling, it can greatly shorten the movement distance of grain during sampling, thereby maximally maintaining the original quality of the grain and improving the accuracy and representativeness of sampling.

Description

Technical Field

[0001] The invention belongs to the technical field of grain storage equipment, and in particular relates to a grain deep-layer sampler. Background Art

[0002] The deep grain sampler is the main equipment used to sample deep grain stored in shallow silos, large diameter silos, vertical silos, etc. It mainly includes the following components: sampler host, hose assembly, multi-section middle pipe and sampling tube. In the actual sampling operation, the operator presses the sampling tube downward into the grain by manpower or machinery, and uses the host to absorb the grain at the position where the sampling tube reaches by negative pressure to obtain grain samples from different grain layers. If you want to obtain deeper grain samples, you need to connect the middle pipe, and remove the pressure booster fixed on the middle pipe of the previous section and install it on the next section, and repeat the operation.

[0003] However, the existing deep grain sampler needs to obtain grain samples through the sampling tube, multi-section intermediate pipe, and hose assembly in sequence to the sampler main unit. The storage depth of modern warehouses is often as deep as 30 to 40 meters. During the absorption process, grain samples are easily broken due to the fast transportation speed and long distance (especially serious when sampling corn), which affects the readiness of sampling. Summary of the invention

[0004] In order to overcome the problems existing in the prior art, the present invention provides a deep grain sampler, which, when used for deep grain sampling, can greatly shorten the movement distance of the grain during sampling, thereby maintaining the original quality of the grain to the greatest extent and improving the accuracy and representativeness of the sampling.

[0005] In order to solve the above problems in the prior art, the present invention adopts the following technical solutions.

[0006] A grain deep-layer sampler, comprising a sampler host, characterized in that it also comprises a deep insertion component and a sampling component, wherein the deep insertion component comprises a deep insertion hose component, a multi-section middle pipe and a cannula that can be interconnected or separated from each other, one end of the deep insertion hose component can be connected to the sampler host, and the other end can be directly connected to the cannula or connected to the cannula through the multi-section middle pipe;

[0007] The sampling assembly includes a sampling hose and a sampler. One end of the sampling hose can be connected to the deep insertion hose assembly or to the air inlet of the sampler host, and the other end can be connected to the sampler. The sampling assembly can movably shuttle inside the multi-section middle pipe and the cannula.

[0008] Furthermore, a balancing part and a sample storage part are provided inside the sampler, a flow cut-off piece is provided between the balancing part and the sample storage part, and an air flow channel is provided on the flow cut-off piece.

[0009] Furthermore, the balancing portion and the sample storage portion are detachably connected, and the shut-off member is clamped and fixed between the balancing portion and the sample storage portion.

[0010] Furthermore, the shut-off member is detachably connected to the balancing portion and the sample storage portion.

[0011] Furthermore, the air flow channel is a waist-shaped hole structure, the length of the air flow channel is greater than the average length of the grain to be sampled, and the width of the air flow channel is less than the width of the grain to be sampled.

[0012] Furthermore, the length of the air flow channel is 1.2 to 1.8 times the average length of the grain to be sampled.

[0013] Furthermore, the width of the air flow channel gradually decreases from the balancing portion to the sample storage portion.

[0014] Furthermore, a one-way valve is provided at the bottom of the sampler.

[0015] Furthermore, it also includes a tube coil mechanism for coiling the sampling hose, the tube coil mechanism includes a tube coil frame, a tube coil and a hand piece, both ends of the tube coil are pivotally fixed to the tube coil frame, and the hand piece can drive the tube coil to rotate around its pivot axis.

[0016] Compared with the prior art, the present invention has achieved the following beneficial effects:

[0017] 1. The grain deep layer sampler of the present invention adopts a deep insertion component to extend into the position of the grain layer to be sampled, and the sampling component is extended into the multi-section middle pipe and the insertion tube of the deep insertion component to directly reach the grain layer to be sampled, and the grain sample is sucked into the sampler through the sampler main unit, which can greatly shorten the movement distance of the grain during sampling, thereby maximally maintaining the original quality of the grain and improving the accuracy and representativeness of the sampling.

[0018] 2. In the deep grain sampler of the present invention, the intercepting member intercepts the sucked grain sample in the sample storage part to prevent the sample from entering the sampler, and the upper balancing part forms a relatively stable negative pressure in the balancing part under the action of the sampler main unit, which is conducive to retaining more grain samples in the sample storage part, and when the sampler is taken out from the deep insertion component, the grain sample inside the sample storage part is not easy to fall off.

[0019] 3. The deep grain sampler of the present invention is a flow intercepting member used for intercepting grain samples and keeping them in the sampler. The air flow channel arranged on the flow intercepting member adopts a special size and shape. While providing a large air flow area, it can effectively ensure that even if the sampler is full of grain samples, the air flow channel will not be completely closed, so that a certain negative pressure is always maintained in the sampler, which is conducive to improving the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a grain deep sampler;

[0022] Figure 2 It is a schematic diagram of the structure of the sampler;

[0023] Figure 3 It is a top view of the shut-off member.

[0024] In the figure: 1. Sampler main unit; 21. Deep insertion hose assembly; 22. Middle connecting pipe; 23. Cannula; 31. Sampling hose; 32. Sampler; 321. Balance part; 322. Sample storage part; 323. Shut-off piece; 324. One-way valve; 4. Pipe-disc mechanism; 5. Grain pile. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiment will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example

[0027] like Figure 1 As shown, a deep-layer grain sampler includes a sampler main unit 1, a deep insertion assembly and a sampling assembly. The deep insertion assembly includes a deep insertion hose assembly 21, a multi-section middle pipe 22 and a cannula 23 that can be interconnected or separated from each other. One end of the deep insertion hose assembly 21 can be connected to the sampler main unit 1, and the other end can be directly connected to the cannula 23 or connected to the cannula 23 through the multi-section middle pipe 22.

[0028] The deep insertion hose assembly 21 generally includes a deep insertion hose and quick connectors at both ends thereof for quick connection and separation, so that the cannula 23 or the multi-section middle pipe 22 can be quickly connected to the air inlet of the sampler host 1 through the deep insertion hose assembly 21. The cannula 23 and the middle pipe 22, the multi-section middle pipe 22 are connected by threads.

[0029] The sampling assembly includes a sampling hose 31 and a sampler 32. One end of the sampling hose 31 can be connected to the deep insertion hose assembly 21 or to the air inlet of the sampler host 1 (can be connected through an adapter), and the other end can be connected to the sampler 32. The sampling assembly can movably shuttle inside the multi-section middle pipe 22 and the cannula 23.

[0030] like Figure 2 As shown, in a preferred embodiment, a balancing part 321 and a sample storage part 322 are provided inside the sampler 32. The balancing part 321 is used to form a buffer zone between the sample storage part 322 and the sampling hose 31. Under the action of the sampler main unit 1, a relatively stable negative pressure is formed inside the balancing part 321, which is conducive to retaining more grain samples in the sample storage part 322, and when the sampler 32 is taken out of the deep insertion assembly, the grain sample inside the sample storage part 322 is not easy to fall off.

[0031] A flow cut-off member 323 is provided between the balancing portion 321 and the sample storage portion 322, and an air flow channel is provided on the flow cut-off member 323. The flow cut-off member 323 can cut off the grain sample in the sampling portion to prevent it from further passing through the sampling hose 31 and then entering the sampler main unit 1. The air flow channel should ensure a large air flow area while effectively cutting off the grain sample.

[0032] In a preferred solution, the balancing portion 321 and the sample storage portion 322 are detachably connected by means of threads or snaps, and the shut-off member 323 is clamped and fixed between the balancing portion 321 and the sample storage portion 322 .

[0033] In a preferred solution, the shutoff member 323 is detachably connected to the balancing portion 321 and the sample storage portion 322, that is, one end of the shutoff member 323 is detachably connected to the balancing portion 321, and the other end is detachably connected to the sample storage portion 322. This facilitates installation and removal of the shutoff member 323 for maintenance.

[0034] like Figure 3 As shown, in a preferred embodiment, the air flow channel is a waist-shaped hole structure, the length of the air flow channel is greater than the average length of the grain to be sampled, and the width of the air flow channel is less than the width of the grain to be sampled.

[0035] In a further preferred embodiment, the length of the air flow channel is 1.2 to 1.8 times the average length of the grain to be sampled.

[0036] like Figure 2 As shown, in a preferred embodiment, the width of the air flow channel gradually decreases from the balancing portion 321 to the sample storage portion 322 .

[0037] The air flow channel arranged on the intercepting member 323 adopts a special size and shape. While providing a large air flow area, it can effectively ensure that even if the sampler 32 is full of grain samples, the air flow channel will not be completely closed, so that a certain negative pressure is always maintained in the sampler 32, which is conducive to improving the sampling efficiency.

[0038] In a preferred solution, a one-way valve 324 is further provided at the bottom of the sampler 32. The one-way valve 324 provided here is an air-open valve, that is, under the action of the sampler main unit 1, the air in the grain pile 5 flows through the one-way valve 324 to open it, and as the grain sample accumulated inside the sample storage part 322 increases, the negative pressure force on the one-way valve 324 gradually decreases, and the one-way valve 324 will gradually close, and finally completely close under the gravity of the grain sample in the sample storage part 322. In this way, when the sampler 32 is taken out of the deep insertion assembly, the grain sample inside the sample storage part 322 is not easy to fall off.

[0039] The preferred solution also includes a tube coil mechanism 4 for coiling the sampling hose 31, the tube coil mechanism 4 includes a tube coil frame, a tube coil and a hand piece, both ends of the tube coil are pivotally fixed on the tube coil frame, and the hand piece can drive the tube coil to rotate around its pivot axis. The tube coil mechanism facilitates the storage and unfolding of the sampling hose 31.

[0040] The deep-layer grain sampler of the present invention has the following working process:

[0041] (1) Connect the cannula 23 of the deep insertion assembly to the deep insertion hose assembly 21;

[0042] (2) inserting the cannula 23 vertically into the grain pile 5;

[0043] (3) Turn on the sampler host 1, and after hearing the sound of sucking grain, suck and insert at the same time;

[0044] (4) After inserting the cannula 23, turn off the power supply of the sampler host 1 (pay attention to discharge the grain stored in the sampler host 1 in time);

[0045] (5) Separate the deep insertion hose assembly 21 from the insertion tube 23, and sequentially install the middle pipe 22 and the deep insertion hose assembly 21 on the top of the insertion tube 23;

[0046] (6) Repeat steps 3 to 5 until the cannula 23 is inserted into the grain layer to be sampled, and then turn off the power of the sampler host 1;

[0047] (7) Separate the deep insertion hose assembly 21 from the middle pipe 22 of the deep insertion assembly;

[0048] (8) Connect the sampler 32 to the sampling hose 31, place the sampler 32 in the middle pipe 22, and gradually move the sampler 32 deeper into the grain layer to be sampled by holding the sampling hose 31 or tying a thin rope or wire rope on the sampler 32;

[0049] (9) Connect the top end of the sampling hose 31 to the deep insertion hose assembly 21 or to the air inlet of the sampler host 1 through a component such as an adapter;

[0050] (10) Open the sampler main unit 1, and the grain sample will be sucked into the sampler 32. After the sampling is completed, keep the sampler main unit 1 open (if a one-way valve 324 is provided at the bottom of the sampler 32, the sampler main unit 1 can be closed), lift the sampler 32 out of the connecting pipe 22 and the insert tube 23, and put the taken grain sample into the sampling bag.

[0051] The grain deep layer sampler of the present invention uses a deep insertion component to extend into the grain layer to be sampled, and extends the sampling component into the multi-section middle pipe 22 and the insertion pipe 23 of the deep insertion component to directly reach the grain layer to be sampled, and absorbs the grain sample into the sampler 32 through the sampler main unit 1. During the sampling process, the grain sample only needs to flow through a very short distance (the length of the sample storage part 322 of the sampler 32), avoiding the damage of the grain caused by long-distance movement collision and friction, thereby maintaining the original quality of the grain to the maximum extent, improving the accuracy and representativeness of the sampling, and is particularly suitable for corn sampling.

[0052] The contents of the embodiments of this specification are merely an enumeration of implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the present invention also extends to equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.

Claims

1. A deep grain sampler, comprising a sampler host (1), Features: It also comprises a deep insertion assembly and a sampling assembly, wherein the deep insertion assembly comprises a deep insertion hose assembly (21), a multi-section middle pipe assembly (22) and a cannula (23) which can be interconnected or separated from each other, one end of the deep insertion hose assembly (21) can be connected to the sampling device host (1), and the other end can be directly connected to the cannula (23) or connected to the cannula (23) through the multi-section middle pipe assembly (22); The sampling assembly comprises a sampling hose (31) and a sampler (32). One end of the sampling hose (31) can be connected to the deep insertion hose assembly (21) or to the air inlet of the sampler host (1), and the other end can be connected to the sampler (32). The sampling assembly can move flexibly inside the multi-section middle pipe (22) and the cannula (23). The sampler (32) is provided with a balancing portion (321) and a sample storage portion (322) inside, a flow cutoff member (323) is provided between the balancing portion (321) and the sample storage portion (322), and an air flow channel is provided on the flow cutoff member (323); The air flow channel is a waist-shaped hole structure, the length of the air flow channel is greater than the average length of the grain to be sampled, and the width of the air flow channel is less than the width of the grain to be sampled; A one-way valve (324) is also provided at the bottom of the sampler (32).

2. A deep grain sampler according to claim 1, Features: The balancing portion (321) and the sample storage portion (322) are detachably connected, and the shutoff member (323) is clamped and fixed between the balancing portion (321) and the sample storage portion (322).

3. A deep grain sampler according to claim 1, Features: The shutoff member (323) is detachably connected to the balancing portion (321) and the sample storage portion (322).

4. A deep grain sampler according to claim 1, Features: The length of the air flow channel is 1.2 to 1.8 times the average length of the grain to be sampled.

5. A deep grain sampler according to claim 1, Features: The width of the air flow channel gradually decreases from the balancing portion (321) to the sample storage portion (322).

6. A deep grain sampler according to claim 1, Features: It also includes a tube coil mechanism (4) for coiling the sampling hose (31), the tube coil mechanism (4) including a tube coil frame, a tube coil and a hand piece, the two ends of the tube coil are pivotally fixed on the tube coil frame, and the hand piece can drive the tube coil to rotate around its pivot axis.

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