Sampling device for grain detection

Abstract

The utility model relates to the related technical field of grain sampling, in particular to a sampling device for grain detection, which is characterized in that a fixed frame is positioned on the side surface of a storage tank; the electric telescopic rod is arranged at the bottom of the fixed frame, and a hoop is arranged on the electric telescopic rod and is clamped with the sampling head; the fixing rods are symmetrically arranged on the fixing frame; a telescopic rod is arranged on the fixed rod in a penetrating and sliding manner, a screw hole is formed in the telescopic rod, a fixed hole is formed in the fixed rod, and a screw rod is arranged in a penetrating manner and is in threaded connection with the screw hole; a moving rod is arranged on the telescopic rod in a penetrating mode, and the moving rod is sleeved with a first spring; a shaft body is arranged on the head portion of the moving rod, clamping arms are symmetrically arranged on the shaft body, and the clamping arms clamp the pipeline. According to the grain sampling device, the fixing frame is arranged, and the clamping arms capable of clamping and limiting the pipeline are arranged on the fixing frame, so that the whole grain sampling device does not need to be manually supported during grain sampling, the manpower consumption is reduced, and the sampling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of grain sampling, and in particular to a sampling device for grain testing. Background Technology

[0002] The electric deep grain sampler is a highly efficient grain sampling device. Driven by electricity, it can penetrate deep into the grain silo to quickly and accurately obtain grain samples. During use, the sampler relies on a fan and fan pipes to suck deep grain into the storage tank, obtaining grain samples from the depths of the grain silo for testing personnel to analyze.

[0003] Existing electric grain samplers require the sampling tube to be inserted vertically into the grain to shorten the sampling distance and extract the bottom layer of grain. During the extraction process, the sampling tube is prone to tilting due to the vibration of the fan, requiring manual support to stabilize the insertion angle. This is time-consuming and labor-intensive. The tilted sampling tube also prevents the device from accurately extracting grain samples from fixed points, affecting subsequent testing and thus having certain limitations. To solve these problems, we propose a sampling device for grain testing. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device for grain testing, so as to solve the problems mentioned in the background art.

[0005] The technical solution adopted in this utility model is:

[0006] A sampling device for grain testing includes a storage tank. The storage tank includes: a fan cover that covers the top of the storage tank via a snap fastener; a pipe that penetrates the outer wall of the storage tank; a connecting pipe at the other end of the pipe, with a sampling head at the other end; a positioning device on the pipe, the positioning device including: a fixing frame located on the side of the storage tank; an electric telescopic rod at the bottom of the fixing frame, with a clamp on the electric telescopic rod engaging with the sampling head; fixed rods symmetrically arranged on the fixing frame; a telescopic rod that penetrates and slides on the fixed rod, with a screw hole on the telescopic rod; a fixing hole on the fixed rod through which a screw rod is threadedly connected; a moving rod that penetrates the telescopic rod, with a spring sleeved on the moving rod; and a shaft at the head of the moving rod, with clamping arms symmetrically arranged on the shaft, the clamping arms holding the pipe.

[0007] In some embodiments, a bearing is provided on the shaft and rotatably connected to the clamping arm, a plate is provided on the moving rod, and a spring is provided on the plate and fixedly connected to the clamping arm.

[0008] In some embodiments, the clamping arms are not in the same horizontal position.

[0009] In some embodiments, the outer wall of the clamping arm is provided with a rubber block.

[0010] In some embodiments, the bottom support of the mounting bracket is a C-shaped block.

[0011] In some embodiments, the pipe is a corrugated pipe.

[0012] In some embodiments, the fixing frame is provided with a sliding groove, and the outer side wall of the fixing rod is symmetrically provided with sliders that are slidably connected to the fixing frame. The sliding groove is provided with a plurality of insertion holes, and the outer side wall of the fixing rod is provided with a protrusion. An insertion rod is provided through the protrusion, and the insertion rod is inserted into the insertion hole.

[0013] In some embodiments, a spring is fitted onto the insertion rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This device features a positioning mechanism on the side of the storage tank. The electric telescopic rod and clamp on the positioning mechanism work together to control the sampling head to penetrate the grain layer. At the same time, a clamping arm is installed on the fixed frame to clamp and limit the pipe. The position of the clamping arm can be adjusted according to the diameter of the storage tank and the pipe. This allows the entire device to be used without manual support during grain sampling, reducing labor costs and improving sampling efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure in this application;

[0018] Figure 2 This is a schematic diagram of the structure of each component on the storage tank in this application;

[0019] Figure 3 This is a schematic diagram of the positioning device in this application.

[0020] Figure 4 This is a schematic diagram of the structure of each component on the fixed rod in this application.

[0021] Figure label:

[0022] 11. Storage tank; 12. Exhaust fan cover; 13. Pipeline; 14. Connecting pipe; 15. Sampling head;

[0023] 2. Positioning device; 21. Fixing frame; 211. Slide groove; 22. Electric telescopic rod; 221. Clamp; 23. Fixing rod; 231. Slider; 232. Screw; 24. Telescopic rod; 241. Screw hole; 25. Moving rod; 251. Spring 1; 26. Shaft; 261. Plate; 262. Spring 2; 27. Clamping arm; 271. Rubber block; 28. Protrusion; 281. Insert rod; 282. Spring 3; 283. Insertion hole. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] Given the current technology, existing electric grain samplers, in order to shorten the sampling distance and allow the sampling tube to reach the bottom of the grain to extract the lowest layer of grain, require the sampling tube to be inserted vertically into the grain. During the process of extracting grain samples by turning on the fan, the sampling tube is prone to tilting under the vibration of the fan, requiring manual support to stabilize the insertion angle of the sampling tube, which is time-consuming and laborious. The tilting of the sampling tube will cause the entire device to fail to accurately extract grain samples at fixed points, affecting subsequent testing work, and thus has certain limitations.

[0027] like Figure 1-4As shown, this utility model embodiment provides a sampling device for grain testing, including a storage tank 11. The storage tank 11 includes: a fan cover 12 covering the top of the storage tank 11 via a snap fastener; a pipe 13 penetrating the outer wall of the storage tank 11; a connecting pipe 14 disposed at the other end of the pipe 13, and a sampling head 15 disposed at the other end of the connecting pipe 14; a positioning device 2 disposed on the pipe 13, the positioning device 2 including: a fixing frame 21 located on the side of the storage tank 11; and an electric telescopic rod 22 disposed at the bottom of the fixing frame 21, the electric telescopic rod 22 being equipped with... A clamp 221 is provided and the sampling head 15 is engaged; a fixed rod 23 is symmetrically arranged on the fixed frame 21; a telescopic rod 24 is slidably arranged on the fixed rod 23, and a screw hole 241 is provided on the telescopic rod 24; a fixed hole is provided on the fixed rod 23 and a screw 232 is threadedly connected to the screw hole 241; a moving rod 25 is slidably arranged on the telescopic rod 24, and a spring 251 is sleeved on the moving rod 25; a shaft 26 is provided at the head of the moving rod 25, and clamping arms 27 are symmetrically arranged on the shaft 26, and the clamping arms 27 clamp the pipe 13.

[0028] When conducting grain sampling and testing, the user first opens the latch to remove the exhaust fan cover 12 from the storage tank 11, exposing the internal space of the storage tank 11. The user cleans the inside of the storage tank 11 to ensure that the inside of the storage tank 11 is clean and dry. Then, the user puts the exhaust fan cover 12 back on the storage tank 11 and uses the latch to fix the exhaust fan cover 12 (the latch is existing technology and is not shown in detail in the figure; the user flips the fixing buckle upward to make the locking body and the locking block on the exhaust fan cover 12 engage, and then presses the fixing buckle downward to complete the fixation of the exhaust fan cover 12 and the storage tank 11). The user then inserts the pipe 13 into the exhaust port on the storage tank 11 and uses the connecting pipe 14 to connect the pipe 13 and the sampling head 15 (the connecting pipe 14 has a flange inside that is fixedly connected to the pipe 13 and the sampling head 15 respectively; this is existing technology and is not shown in detail in the figure).

[0029] After assembling the entire sampling device, the user moves the assembled sampling device and positioning device 2 to the designated location in the grain silo according to the measurement position. The user controls the pipe 13 to be vertical, and the sampling head 15 is vertically downward under gravity. Another user then secures the sampling head 15 to the electric telescopic rod 22 via clamp 221. Bolts on clamp 221 control the tightness of the clamp. After assembly, the user and the entire device move to the top of the grain storage area inside the silo. The user manually supports the storage tank 11 and the fixing frame 21, and then controls the electric telescopic rod 22 to move the sampling head 15 downward into the grain layer. Based on the placement of the fixing frame 21, the user then turns the screw 232 counterclockwise and pulls it outward, removing the screw 232 from the screw hole 241 on the fixing rod 23 and the telescopic rod 24. At this point, the user can control the telescopic rod 24 to slide and adjust the telescopic length on the fixed rod 23. After adjusting the telescopic rods 24 on both sides to a length that allows the clamping arm 27 to hold the pipe 13 without affecting the verticality of the pipe 13, the center position of the clamping arm 27 and the pipe 13 are on the same horizontal plane. The user then turns the screw 232 clockwise through the preset fixing hole on the fixed rod 23 and the corresponding screw hole 241 on the telescopic rod 24 to fix the telescopic rod 24 on the fixed rod 23. The user moves the rod 25 to both sides to control the clamping arm 27 to move synchronously to expose the middle position. The user then moves the pipe 13 to the middle of the clamping arm 27 and releases the moving rod 25. Under the elastic force of the spring 251, the moving rod 25 resets and controls the clamping arm 27 to reset and limit the clamping of the pipe 13. Under the limiting action of the clamping arm 27, the pipe 13 maintains a fixed vertical angle.

[0030] At this point, the user controls the switch on the exhaust fan cover 12 to open. The exhaust fan cover 12 is equipped with an exhaust fan (the exhaust fan draws out the air inside the storage tank 11, reducing the internal pressure of the storage tank 11 to form a negative pressure state. Under the negative pressure state, the grain is drawn into the storage tank 11 through the pipe 13. This is existing technology and is not shown in detail in the figure). The grain sampling is completed. The user then controls the clamp arm 27 to release the pipe 13, and then controls the electric telescopic rod 22 to move upward to control the sampling head 15 to pull out the grain layer, release the clamp 221 from the sampling head 15, move the storage tank 11 to the designated location, open the outlet at the bottom of the storage tank 11 to collect the grain sample, and send it to the designated testing location.

[0031] Specifically, users can select the appropriate size and length of pipe 13 according to the depth of grain inside the specific grain warehouse. The length of pipe 13 in the attached figure does not represent the actual length of pipe 13 used.

[0032] In some embodiments, a bearing is provided on the shaft 26 and rotatably connected to the clamping arm 27. A plate 261 is provided on the moving rod 25, and a spring 262 is provided on the plate 261 and fixedly connected to the clamping arm 27. The clamping arm 27 is rotatably connected to the shaft 26 via the bearing. The inner ring of the bearing is fixed to the shaft 26, and the outer ring is fixedly connected to the clamping arm 27 via a fixing block, providing support for the rotation of the clamping arm 27 (this is prior art and is not shown in detail in the figure). Under the elastic force of the spring 262, the user can easily control the clamping arm 27 to adjust the rotation angle of the clamping arm 27 according to the diameter of the pipe 13, thereby increasing the contact area between the clamping arm 27 and the pipe 13 and improving the practicality of the clamping arm 27.

[0033] In some embodiments, the clamping arms 27 are not in the same horizontal position. The vertical misalignment of the clamping arms 27 causes the two sets of clamping arms 27 to clamp the pipe 13 at different positions, thereby improving the stability of the clamping and limiting.

[0034] In some embodiments, a rubber block 271 is provided on the outer wall of the clamping arm 27. The rubber block 271 has a good coefficient of friction and is easy to clean, meeting the hygiene requirements of grain sampling and reducing wear on the pipe 13.

[0035] In some embodiments, the bottom support of the fixing frame 21 is a C-shaped block. The C-shaped block makes the center of gravity of the fixing frame 21 more stable during use, ensuring the stability of the entire positioning device 2 during grain sampling.

[0036] In some embodiments, the pipe 13 is a corrugated pipe. A corrugated pipe is a freely expandable pipe body. Setting the pipe 13 as a corrugated pipe ensures that the sampling depth of the sampling head 15 can be adjusted by the user according to the depth of the grain layer, saving the space occupied by the entire device and making the device easy to carry.

[0037] In some embodiments, the fixing frame 21 is provided with a sliding groove 211, and the outer side wall of the fixing rod 23 is symmetrically provided with sliders 231 that are slidably connected to the fixing frame 21. The sliding groove 211 is provided with a plurality of insertion holes 283, and the outer side wall of the fixing rod 23 is provided with a protrusion 28. An insertion rod 281 is inserted through the protrusion 28, and the insertion rod 281 is inserted into the insertion hole 283. According to the diameter of the pipe 13, the user pulls out the insertion rod 281, so that the fixing rod 23 can drive the clamping arm 27 to move horizontally on the sliding groove 211. After adjusting the position, the insertion rod 281 is inserted into the insertion hole 283 to fix the position of the fixing rod 23. The spacing of the clamping arms 27 is adjusted to adjust the entire device according to the pipe diameter of the pipe 13, thereby improving the practicality and flexibility of the entire device.

[0038] In some embodiments, a spring 282 is sleeved on the insertion rod 281. Under the elastic force of the spring 282, the connection between the insertion rod 281 and the insertion hole 283 is tighter, improving the insertion stability of the insertion rod 281 and the insertion hole 283.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sampling device for grain testing, comprising a storage tank (11), said storage tank (11) comprising: The exhaust fan cover (12) is attached to the top of the storage tank (11) by means of a snap fastener; Pipe (13) is installed through the outer wall of the storage tank (11); A connecting pipe (14) is provided at the other end of the pipe (13), and a sampling head (15) is provided at the other end of the connecting pipe (14); A positioning device (2) is provided on the pipe (13), and the positioning device (2) includes: A mounting bracket (21) is located on the side of the storage tank (11); An electric telescopic rod (22) is installed at the bottom of the fixed frame (21), and a clamp (221) is provided on the electric telescopic rod (22) to engage with the sampling head (15); Fixed rods (23) are symmetrically arranged on the fixed frame (21); A telescopic rod (24) is slidably mounted on the fixed rod (23). The telescopic rod (24) is provided with a screw hole (241). The fixed rod (23) is provided with a fixed hole and a screw rod (232) is threadedly connected to the screw hole (241). A movable rod (25) is provided through the telescopic rod (24), and a spring (251) is sleeved on the movable rod (25); A shaft (26) is disposed at the head of the moving rod (25), and clamping arms (27) are symmetrically disposed on the shaft (26) to clamp the pipe (13).

2. The sampling device for grain detection according to claim 1, characterized in that, The shaft (26) is provided with a bearing and is rotatably connected to the clamping arm (27). The moving rod (25) is provided with a plate (261). The plate (261) is provided with a spring (262) and is fixedly connected to the clamping arm (27).

3. A sampling device for grain detection according to claim 2, characterized in that, The clamping arms (27) are not in the same horizontal position.

4. A sampling device for grain detection according to claim 3, characterized in that, The outer wall of the clamping arm (27) is provided with a rubber block (271).

5. A sampling device for grain detection according to claim 1, characterized in that, The bottom support of the fixed frame (21) is a C-shaped block.

6. A sampling device for grain detection according to claim 1, characterized in that, The pipe (13) is a corrugated pipe.

7. A sampling device for grain detection according to claim 1, characterized in that, The fixing frame (21) is provided with a sliding groove (211). The outer side wall of the fixing rod (23) is symmetrically provided with sliders (231) and slidingly connected to the fixing frame (21). The sliding groove (211) is provided with multiple insertion holes (283). The outer side wall of the fixing rod (23) is provided with a protrusion (28). An insertion rod (281) is provided through the protrusion (28). The insertion rod (281) is inserted into the insertion hole (283).

8. A sampling device for grain detection according to claim 7, characterized in that, A spring three (282) is fitted onto the insertion rod (281).

Images