Automatic sampling device for concrete powder

Abstract

The utility model relates to the technical field of concrete powder sampling, and discloses an automatic concrete powder sampling device which comprises a frame and a powder storage bin, the left side of the powder storage bin is fixedly connected with a connecting flange I, the left side of the top of the frame is fixedly connected with a fixed inclined block, and the right side of the top of the frame is fixedly connected with a fixed frame; the top of the fixed inclined block is fixedly connected with a rotating motor, the output end of the rotating motor is fixedly connected with a sampling auger, the sampling auger adopts an inclination angle design, and the interior of the fixed frame is fixedly connected with a shell. According to the concrete powder multi-bin sampling device, the first connecting flange and the second connecting flange are connected through the fixing bolts, so that the storage bin can be rapidly replaced, meanwhile, the sampling auger is driven by the rotating motor to convey powder from the storage bin to the shell, high efficiency, precision and automation of concrete powder multi-bin sampling are achieved, manual sampling errors are eliminated, and the sampling efficiency is improved. The detection data reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete powder sampling technology, and in particular to an automatic concrete powder sampling device. Background Technology

[0002] Concrete powder is a powdery mixture composed of cementitious materials, mineral admixtures, and functional additives. It is produced through grinding and homogenization processes and has a high specific surface area and good dispersibility. It is widely used in construction, bridges, roads and other engineering projects. As the main binder of concrete, its quality directly determines the mechanical properties and durability of concrete.

[0003] A search revealed Chinese patent publication number CN211347513U, which discloses an automatic sampling device for concrete powder. The device includes a sampling pipeline, one end of which is connected to the feed pipe of a powder storage tank, and the other end connected to a sampling bag. The sampling pipeline is equipped with a manual valve and an electrically controlled valve, with a corresponding time switch on the electrically controlled valve. This addresses the problems of traditional powder sampling devices having a small sampling range and unrepresentative samples, leading to unscrupulous suppliers using inferior materials and filling the sampling rod outside its working range, seriously jeopardizing project quality. While this method falls under the category of construction engineering, the sampling pipeline is only connected to the feed pipe of the powder storage tank. Its sampling range is limited by the pipeline's location and cannot cover the deep powder inside the tank. This results in samples only reflecting the powder quality near the feed inlet, failing to represent the true condition of the entire tank. Furthermore, when sampling different batches or locations of powder, manual operation of valves to switch pipelines is still required. This manual intervention not only increases operational complexity but also increases the risk of cross-contamination due to human error. For large concrete mixing plants, this single-point sampling method cannot meet the needs of multi-compartment, high-frequency testing and makes it difficult to trace the specific sampling time and location. This provides an opportunity for unscrupulous suppliers to fill non-sampling areas with substandard powder, thereby affecting project quality and safety. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an automatic sampling device for concrete powder, which aims to improve the problem that the sampling range is limited in the prior art, making it difficult for the sample to represent the true condition of the entire tank.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic concrete powder sampling device, comprising a frame and a powder storage bin, a connecting flange 1 fixedly connected to the left side of the powder storage bin, a fixing wedge fixedly connected to the top left side of the frame, a fixing frame fixedly connected to the top right side of the frame, a rotating motor fixedly connected to the top of the fixing wedge, a sampling auger fixedly connected to the output end of the rotating motor, the sampling auger adopting an inclined design, an outer shell fixedly connected inside the fixing frame, the sampling auger rotatably connected inside the outer shell, a connecting flange 2 fixedly connected to the right side of the outer shell, the right side of the connecting flange 2 fitting against the left side of the connecting flange 1, a plurality of fixing bolts passing through the left side of the connecting flange 2 at equal intervals, the ends of the plurality of fixing bolts being threaded at equal intervals around the left side of the connecting flange 1, and a discharge mechanism provided at the bottom of the outer shell.

[0006] The above technical solution involves connecting flange one and flange two with fixing bolts, allowing for quick replacement of the storage bins. Simultaneously, a rotating motor drives a sampling auger to transport powder from the storage bins to the outer shell, and the discharge mechanism discharges the powder to complete the sampling. This achieves efficient, accurate, and automated multi-bin sampling of concrete powder, eliminating manual sampling errors and improving the reliability of test data.

[0007] As a further description of the above technical solution:

[0008] The discharge mechanism includes a connector, which is fixedly connected to the bottom left end of the outer casing. The bottom of the connector is connected to a telescopic tube, and the front end of the telescopic tube is connected to a discharge head. The top of the discharge head is fixedly connected to a handle, and the bottom front side of the frame is fixedly connected to a bracket. The top of the bracket has a slot, and the bottom front end of the discharge head is engaged inside the slot.

[0009] The above technical solution connects the outer shell to the telescopic tube via a connector, allowing the powder to flow into the discharge mechanism. By holding the handle on the discharge head, the length of the telescopic tube and the position of the discharge head can be adjusted. After sampling, the discharge head is inserted into the slot of the bracket, achieving efficient and accurate concrete powder sampling. This improves the sampling flexibility, convenience, and versatility of the device, and ensures the cleanliness and safety of the discharge mechanism.

[0010] As a further description of the above technical solution:

[0011] A control console is fixedly connected to the top front side of the frame, and the control console is electrically connected to the rotating motor.

[0012] Through the above technical solution, the control console is electrically connected to the rotating motor to achieve precise control of the sampling auger speed and start / stop, ensuring the consistency of the sampling amount each time.

[0013] As a further description of the above technical solution:

[0014] The top of the frame is fixedly connected to a diagonal brace, and the left side of the diagonal brace is fixedly connected to the bottom right side of the fixed diagonal block.

[0015] The above technical solution involves fixing one end of the diagonal brace to the bottom right side of the fixed diagonal block and connecting the other end to the main body of the frame, forming a triangular support structure. This effectively disperses the vibration and torque generated during the operation of the rotating motor, enhancing the stability of the fixed diagonal block.

[0016] As a further description of the above technical solution:

[0017] The front, rear, left, and right ends of the frame are all rotatably connected with anti-slip grooves, and the outside of the anti-slip grooves is designed to be anti-slip.

[0018] Through the above technical solution: the anti-slip grooves on the front, rear, left and right ends of the frame adopt an outward convex anti-slip texture design, which can effectively prevent the frame from sliding or tilting when the device moves on complex ground such as construction sites, and avoid sampling errors caused by positional deviation.

[0019] As a further description of the above technical solution:

[0020] A charging port is provided on the left side of the frame, and a dust cover is rotatably connected to the top left side of the charging port.

[0021] The above technical solution allows the charging port to connect to an external power source to charge the device, while the dust cover at the top closes via a hinge, effectively preventing dust and rainwater from entering the interface.

[0022] As a further description of the above technical solution:

[0023] A sealing cover plate is also fixedly connected to the left side of the connecting flange, and the size of the sealing cover plate matches the size of the connecting flange.

[0024] The above technical solution ensures that the sealing cover and the connecting flange are perfectly matched in size, allowing for temporary closure of the flange opening when changing the powder storage bin, preventing powder leakage from the storage bin and ensuring efficiency and cleanliness during multi-bin switching.

[0025] As a further description of the above technical solution:

[0026] The outer surface of the discharge head is rounded, and the outer surface of the handle is frosted.

[0027] Through the above technical solutions: the smooth outer surface of the discharge head reduces powder residue and avoids cross-contamination between different batches of powder; the frosted process of the handle increases grip friction and prevents slippage during operation.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the connecting flange one and the connecting flange two are connected by fixing bolts, which allows the storage bin to be quickly replaced. At the same time, the rotating motor drives the sampling auger to transport the powder from the storage bin to the outer shell. The discharge mechanism discharges the powder to complete the sampling, realizing the high efficiency, accuracy and automation of multi-bin sampling of concrete powder, eliminating the error of manual sampling and improving the reliability of test data.

[0030] 2. In this utility model, the outer shell is connected to the telescopic tube by a connector, so that the powder can flow into the discharge mechanism. By holding the handle on the discharge head, the length of the telescopic tube and the position of the discharge head are adjusted. After sampling, the discharge head is inserted into the slot of the bracket, which realizes efficient and accurate concrete powder sampling, improves the sampling flexibility, convenience and device versatility, and ensures the cleanliness and safety of the discharge mechanism. Attached Figure Description

[0031] Figure 1 This is a perspective view of an automatic concrete powder sampling device proposed in this utility model;

[0032] Figure 2 This is a partial structural schematic diagram of an automatic concrete powder sampling device proposed in this utility model.

[0033] Figure 3 This is a structural exploded view of the sealing cover plate in an automatic concrete powder sampling device proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the discharge mechanism in an automatic concrete powder sampling device proposed in this utility model;

[0035] Figure 5 This is a structural breakdown diagram of the discharge mechanism in an automatic concrete powder sampling device proposed in this utility model.

[0036] Legend:

[0037] 1. Frame; 2. Discharge mechanism; 201. Connector; 202. Telescopic tube; 203. Discharge head; 204. Handle; 205. Bracket; 206. Slot; 3. Powder storage bin; 4. Connecting flange one; 5. Fixing wedge; 6. Fixing frame; 7. Rotating motor; 8. Sampling auger; 9. Outer shell; 10. Connecting flange two; 11. Fixing bolts; 12. Control console; 13. Diagonal brace; 14. Anti-slip groove; 15. Charging port; 16. Dust cover; 17. Sealing cover. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides an automatic concrete powder sampling device, including a frame 1 and a powder storage bin 3. A connecting flange 4 is fixedly connected to the left side of the powder storage bin 3. A fixing inclined block 5 is fixedly connected to the top left side of the frame 1. A fixing frame 6 is fixedly connected to the top right side of the frame 1. A rotating motor 7 is fixedly connected to the top of the fixing inclined block 5. A sampling auger 8 is fixedly connected to the output end of the rotating motor 7. The sampling auger 8 adopts an inclined angle design. A shell 9 is fixedly connected inside the fixing frame 6. The sampling auger 8 is rotatably connected inside the shell 9. A connecting flange 10 is fixedly connected to the right side of the shell 9. The right side of the connecting flange 10 is close to the left side of the connecting flange 4. Multiple fixing bolts 11 are equidistantly inserted through the left side of the connecting flange 10. The ends of the multiple fixing bolts 11 are equidistantly threaded around the left side of the connecting flange 4. A discharge mechanism 2 is provided at the bottom of the shell 9.

[0040] Specifically, the left-side fixed inclined block 5 and the right-side fixed bracket 6 on the top of the frame 1 provide mounting bases for the rotary motor 7 and the outer casing 9, respectively. The powder storage bin 3 is connected to the right-side connecting flange 10 of the outer casing 9 via the left-side connecting flange 1 4. Multiple fixing bolts 11 pass through the flanges and are threaded together to form a detachable sealed connection. This design allows for quick replacement of different powder storage bins 3 by simply removing the fixing bolts 11, significantly improving the efficiency of multi-bin sampling. The rotary motor 7 is fixed to the top of the fixed inclined block 5, and its output end is directly connected to... The sampling auger 8 is designed with an inclination angle and is completely housed inside the outer casing 9. When the rotating motor 7 starts, it drives the sampling auger 8 to rotate at high speed. Its spiral blades transport the concrete powder in the powder storage bin 3 from a low position to a high position. Because the inclination angle of the spiral blades and the direction of gravity of the powder form a resultant force, the powder is fully agitated during the transportation process, avoiding agglomeration and ensuring the representativeness of the sample. When it is necessary to take a sample from a certain powder storage bin 3, the connecting flange 1 4 and the connecting flange 2 10 are fastened with fixing bolts 11 to ensure the outer casing 9. The shell 9 is connected to the powder storage bin 3. When the rotating motor 7 is started, the sampling auger 8 rotates and transports the powder into the shell 9. At this time, the discharge mechanism 2 is opened, and the powder is discharged through the discharge port at the bottom of the shell 9, completing the sampling. When it is necessary to switch to another powder storage bin 3, the discharge mechanism 2 is closed and the rotating motor 7 is stopped. The fixing bolts 11 are loosened, the current powder storage bin 3 is moved away, and after replacing it with a new storage bin, it is fixed again. The entire switching process does not require disassembling the rotating motor 7 or the sampling auger 8, which greatly reduces the time spent on frequent moving equipment in traditional manual sampling. When the powder moves upward under the push of the sampling auger 8, the gravity component and the screw thrust are superimposed, which reduces the load on the rotating motor 7 and improves the conveying efficiency. When sampling stops, the rotating motor 7 reverses and the residual powder falls back to the powder storage bin 3 along the auger blades, reducing the residue of powder in the outer shell 9 and avoiding the blockage problem caused by powder solidification. This automatic control completely eliminates the error caused by experience difference when sampling manually, improves the reliability of the test data, and realizes the high efficiency, accuracy and automation of multi-bin sampling of concrete powder.

[0041] Reference Figure 1 , Figure 4 and Figure 5 The discharge mechanism 2 includes a connector 201, which is fixedly connected to the bottom left end of the outer casing 9. The bottom of the connector 201 is connected to a telescopic tube 202, and the front end of the telescopic tube 202 is connected to a discharge head 203. The top of the discharge head 203 is fixedly connected to a handle 204. The bottom front side of the frame 1 is fixedly connected to a bracket 205. The top of the bracket 205 is provided with a slot 206, and the bottom front end of the discharge head 203 is engaged inside the slot 206.

[0042] Specifically, the connecting piece 201 of the discharge mechanism 2 is fixedly connected to the bottom left end of the outer casing 9, ensuring that the powder inside the outer casing 9 can flow smoothly into the discharge mechanism 2. The telescopic tube 202 connected to the bottom of the connecting piece 201 has a telescopic feature, allowing the discharge mechanism 2 to adjust its length according to actual needs during use to adapt to different sampling scenarios. The front end of the telescopic tube 202 is connected to the discharge head 203, through which the powder finally flows out. The handle 204 fixedly connected to the top of the discharge head 203 provides the operator with... The convenient operating point facilitates the movement and control of the discharge head 203. The bracket 205, fixedly connected to the front bottom of the frame 1, has a slot 206 at its top for securing the discharge head 203 when the discharge mechanism 2 is not in use. When the automatic concrete powder sampling device starts working, as the amount of powder inside the outer casing 9 increases, the powder enters the telescopic tube 202 through the connector 201. At this time, the operator can hold the handle 204 at the top of the discharge head 203 and adjust the length of the telescopic tube 202 and the discharge head 203 as needed. Position 3, align the discharge head 203 with the pre-prepared sampling container. Under the influence of gravity, the powder will flow along the telescopic tube 202 and finally exit from the discharge head 203, completing the sampling process. The telescopic nature of the telescopic tube 202 allows the discharge head 203 to flexibly reach sampling containers at different locations, improving the flexibility and convenience of sampling. After sampling is completed, to prevent the discharge head 203 from being damaged or contaminated by dust due to random placement, the bottom front end of the discharge head 203 can be locked onto the top of the bracket 205. The discharge head 203 is stably fixed to the frame 1 within the slot 206 of the part, which not only ensures the cleanliness and safety of the discharge mechanism 2, but also facilitates the overall movement and storage of the device. At the same time, fixing the discharge head 203 in the slot 206 also helps to prevent the telescopic tube 202 from being overstretched or twisted when not in use, thus extending the service life of the discharge mechanism 2. In the actual concrete production and quality testing process, this discharge mechanism 2 can efficiently and accurately complete the sampling of concrete powder, while improving the versatility of the device.

[0043] Reference Figure 1 , Figure 3 and Figure 4 A control console 12 is fixedly connected to the top front side of the frame 1, and the control console 12 is electrically connected to the rotating motor 7; a diagonal brace 13 is fixedly connected to the top of the frame 1, and the left side of the diagonal brace 13 is fixedly connected to the bottom right side of the fixed diagonal block 5; anti-slip grooves 14 are rotatably connected to the front, rear, left and right sides of the frame 1, and the exterior of the anti-slip grooves 14 are all designed to be anti-slip; a charging port 15 is provided on the left side of the frame 1, and a dust cover 16 is rotatably connected to the top left side of the charging port 15; a sealing cover 17 is also fixedly connected to the left side of the connecting flange 4, and the size of the sealing cover 17 matches the size of the connecting flange 4; the exterior of the discharge head 203 is designed to be rounded, and the exterior of the handle 204 is designed to be frosted.

[0044] Specifically, the control console 12 is electrically connected to the rotating motor 7 to precisely control the speed and start / stop of the sampling auger 8, ensuring the consistency of the sampling amount each time. One end of the inclined support block 13 is fixed to the bottom right side of the fixed inclined block 5, and the other end is connected to the main body of the frame 1, forming a triangular support structure. This structure effectively disperses the vibration and torque generated by the rotating motor 7 during operation, enhancing the stability of the fixed inclined block 5. The anti-slip grooves 14 on the front, rear, left, and right sides of the frame 1 adopt an outwardly convex anti-slip texture design. When the device moves on complex terrain such as construction sites, it can effectively prevent the frame 1 from sliding or tilting, avoiding damage due to displacement. The sampling error caused by the offset is mitigated. The charging port 15 is used to connect to an external power source to charge the device. The dust cover 16 at the top closes via a pivot, effectively preventing dust and rainwater from entering the interface. The sealing cover 17 is perfectly matched to the size of the connecting flange 4, which can temporarily close the flange opening when changing the powder storage chamber 3 to prevent powder leakage from the powder storage chamber 3 and ensure efficiency and cleanliness when switching between multiple chambers. The smooth outer surface of the discharge head 203 reduces powder residue and avoids cross-contamination between different batches of powder. The frosted finish of the handle 204 increases grip friction and prevents slippage during operation.

[0045] Working Principle: The left-side fixed inclined block 5 and the right-side fixed bracket 6 on the top of the frame 1 provide mounting bases for the rotating motor 7 and the outer shell 9, respectively. The powder storage bin 3 is connected to the right-side connecting flange 10 of the outer shell 9 via the left-side connecting flange 1 4. Multiple fixing bolts 11 pass through the flanges and are threaded together to form a detachable sealed connection. This design allows for quick replacement of different powder storage bins 3 by simply removing the fixing bolts 11, significantly improving the efficiency of multi-bin sampling. The rotating motor 7 is fixed to the top of the fixed inclined block 5, and its output end is directly connected to the sampling auger 8. The sampling auger 8 adopts an inclined design and is completely housed inside the outer shell 9. When the rotating motor 7 starts, it drives the sampling auger 8 to rotate at high speed. Its spiral blades transport the concrete powder in the powder storage bin 3 from a low position to a high position. Because the inclination angle of the spiral blades and the direction of gravity of the powder form a resultant force, the powder is fully agitated during the transportation process, avoiding agglomeration and ensuring the representativeness of the sample. When it is necessary to sample a certain... When sampling from the powder storage bin 3, the connecting flange 1 4 and connecting flange 2 10 are fastened with fixing bolts 11 to ensure that the outer shell 9 is connected to the powder storage bin 3. The rotating motor 7 is started and the sampling auger 8 rotates to transport the powder into the outer shell 9. At this time, the discharge mechanism 2 is opened and the powder is discharged through the discharge port at the bottom of the outer shell 9, completing the sampling. When it is necessary to switch to another powder storage bin 3, the discharge mechanism 2 is closed and the rotating motor 7 is stopped. The fixing bolts 11 are loosened and the current powder storage bin 3 is moved away. After replacing with a new storage bin, it is fixed again. The entire switching process does not require disassembling the rotating motor 7 or the sampling auger 8, which greatly shortens the time of frequent movement of equipment in traditional manual sampling. When the powder moves upward under the push of the sampling auger 8, the gravity component and the spiral thrust are superimposed, which reduces the load on the rotating motor 7 and improves the conveying efficiency. When sampling stops, the rotating motor 7 reverses and the residual powder falls back to the powder storage bin 3 along the auger blades, reducing the residue of powder in the outer shell 9.

[0046] Furthermore, the connector 201 is fixedly connected to the bottom left end of the outer casing 9, ensuring that the powder inside the outer casing 9 can flow smoothly into the discharge mechanism 2. The telescopic tube 202 connected to the bottom of the connector 201 has a telescopic characteristic, allowing the discharge mechanism 2 to adjust its length according to actual needs during use to adapt to different sampling scenarios. The front end of the telescopic tube 202 is connected to the discharge head 203, through which the powder finally flows out. The handle 204 fixedly connected to the top of the discharge head 203 provides a convenient operating point for the operator, facilitating the movement and control of the discharge head 203. The bracket 205 fixedly connected to the bottom front of the frame 1 has a slot 206 on its top for fixing the discharge head 203 when the discharge mechanism 2 is not in use. When the automatic concrete powder sampling device starts working, as the amount of powder inside the outer casing 9 increases, the powder will enter the telescopic tube 202 through the connector 201. At this time, the operator can hold the handle on the top of the discharge head 203. Hand 204, adjust the length of the telescopic tube 202 and the position of the discharge head 203 as needed, align the discharge head 203 with the pre-prepared sampling container, and under the action of gravity, the powder will flow along the telescopic tube 202 and finally flow out from the discharge head 203, completing the sampling process. The telescopicity of the telescopic tube 202 allows the discharge head 203 to flexibly reach sampling containers in different positions, improving the flexibility and convenience of sampling. After the sampling work is completed, in order to prevent the discharge head 203 from being damaged or contaminated by dust due to random placement, the bottom front end of the discharge head 203 can be locked into the slot 206 at the top of the bracket 205. In this way, the discharge head 203 is stably fixed on the frame 1, which not only ensures the cleanliness and safety of the discharge mechanism 2, but also facilitates the overall movement and storage of the device. At the same time, fixing the discharge head 203 in the slot 206 also helps to prevent the telescopic tube 202 from being overstretched or twisted when not in use, extending the service life of the discharge mechanism 2.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic concrete powder sampling device, comprising a frame (1) and a powder storage bin (3), characterized in that: A connecting flange (4) is fixedly connected to the left side of the powder storage bin (3). A fixed inclined block (5) is fixedly connected to the top left side of the frame (1). A fixed frame (6) is fixedly connected to the top right side of the frame (1). A rotating motor (7) is fixedly connected to the top of the fixed inclined block (5). A sampling auger (8) is fixedly connected to the output end of the rotating motor (7). The sampling auger (8) adopts an inclined design. A shell (9) is fixedly connected inside the fixed frame (6). The sampling auger (8) is rotatably connected inside the shell (9). A connecting flange (10) is fixedly connected to the right side of the shell (9). The right side of the connecting flange (10) is close to the left side of the connecting flange (4). Multiple fixing bolts (11) are equidistantly inserted through the left side of the connecting flange (10). The ends of the multiple fixing bolts (11) are equidistantly threaded around the left side of the connecting flange (4). A discharge mechanism (2) is provided at the bottom of the shell (9).

2. The automatic concrete powder sampling device according to claim 1, characterized in that: The discharge mechanism (2) includes a connector (201), which is fixedly connected to the bottom left end of the outer shell (9). The bottom of the connector (201) is connected to a telescopic tube (202), and the front end of the telescopic tube (202) is connected to a discharge head (203). The top of the discharge head (203) is fixedly connected to a handle (204). The bottom front side of the frame (1) is fixedly connected to a bracket (205), and the top of the bracket (205) is provided with a slot (206). The bottom front end of the discharge head (203) is engaged inside the slot (206).

3. The automatic concrete powder sampling device according to claim 1, characterized in that: A control console (12) is fixedly connected to the top front side of the frame (1), and the control console (12) is electrically connected to the rotating motor (7).

4. The automatic concrete powder sampling device according to claim 1, characterized in that: The top of the frame (1) is fixedly connected to a diagonal brace (13), and the left side of the diagonal brace (13) is fixedly connected to the bottom right side of the fixed diagonal block (5).

5. The automatic concrete powder sampling device according to claim 1, characterized in that: The front and rear sides of the frame (1) are rotatably connected with anti-slip grooves (14), and the outside of the anti-slip grooves (14) are all designed to be anti-slip.

6. The automatic concrete powder sampling device according to claim 1, characterized in that: A charging port (15) is provided on the left side of the frame (1), and a dust cover (16) is rotatably connected to the top left side of the charging port (15).

7. The automatic concrete powder sampling device according to claim 1, characterized in that: A sealing cover plate (17) is also fixedly connected to the left side of the connecting flange (4), and the size of the sealing cover plate (17) matches the size of the connecting flange (4).

8. The automatic concrete powder sampling device according to claim 2, characterized in that: The outer surface of the discharge head (203) is rounded, and the outer surface of the handle (204) is frosted.

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