Material flowing state detection device

Abstract

The utility model relates to the technical field of material detection, in particular to a material flowing state detection device. The device comprises a chute, an impeller and a rotating speed detection structure, wherein a channel for materials to flow through from top to bottom is formed in the chute; the impeller is rotationally connected into the chute, and blades on one side of the impeller can make contact with materials in the material flowing process; the rotating speed detection structure is connected to the impeller and used for detecting the rotating state of the impeller in real time. Materials can push the impeller to rotate while flowing; the rotating speed detection structure can detect the rotating state of the impeller in real time to obtain the rotating speed of the impeller; a worker judges whether materials exist in the chute or not and judges the flowing state of the materials by observing the detection result of the rotating speed detection structure. The detection device can stably and reliably work for a long time, does not need to be maintained frequently, and is not easily interfered by sundries, and the detection result can accurately reflect the flowing state of the material, so that the smoothness of the production process can be improved, and accidents are avoided.

Description

Technical Field

[0001] This utility model relates to the field of material detection technology, and in particular to a material flow state detection device. Background Technology

[0002] In the production process, bulk materials such as coal are often transported by gravity. This system typically includes chutes through which the material flows. The chutes are installed vertically or at a significant angle, and the material flows from top to bottom by its own weight. To prevent material and dust from overflowing from the chutes, they are usually enclosed on all sides. Therefore, the flow of material inside the chutes is relatively concealed, making it difficult to detect interruptions or blockages in a timely manner.

[0003] Currently, there are three methods for detecting material flow: 1. Image method: An observation port is opened in the chute wall, a monitoring camera is installed to photograph the inside of the chute, and image algorithms are used to determine the internal flow status. However, this method suffers from poor image quality when dust levels are high or the camera lens is dirty, and requires frequent camera cleaning. 2. Radar method: A radar sensor is used instead of a camera after opening the observation port. This method can only detect the presence or absence of material in the chute, but cannot describe the amount of material flow. 3. Distance measurement method: Based on the radar method, this method detects the distance from the material to the sensor. However, it is susceptible to obstruction by objects or adhesion to the chute wall, which can prevent long-term use. All existing detection methods have shortcomings and cannot accurately and reliably detect the material flow status.

[0004] Therefore, how to accurately and reliably detect the flow state of materials has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a material flow state detection device to solve the technical problem that the existing technology cannot accurately and reliably detect the material flow state.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A material flow state detection device includes a chute, an impeller, and a rotational speed detection structure, wherein:

[0008] The chute has a channel for material to flow from top to bottom;

[0009] The impeller is rotatably connected inside the chute, and part of the impeller can come into contact with the material during the material flow process;

[0010] The rotational speed detection structure is connected to the impeller and is used to detect the rotational state of the impeller in real time.

[0011] Furthermore, it also includes a rotating shaft, on which the impeller is mounted, and both ends of the rotating shaft are rotatably connected to the wall of the chute.

[0012] Furthermore, the rotational speed detection structure includes an encoder; one end of the rotating shaft extends from the chute and is connected to the encoder.

[0013] Furthermore, it also includes a baffle structure disposed within the chute and above the impeller, the baffle structure blocking the material between the material and a portion of the impeller.

[0014] Furthermore, the baffle structure includes a flow guide baffle, and a portion of the impeller is disposed below the flow guide baffle.

[0015] Furthermore, the flow guide baffle is inclined from top to bottom.

[0016] Furthermore, the baffle structure also includes a flow guide plate, the upper end of which is connected to the flow guide baffle, and the lower end of which is inclined toward the impeller.

[0017] Furthermore, the flow guide baffle and the flow diverter are integrally formed, and their connecting surfaces are perpendicularly aligned with the axis of the impeller.

[0018] Furthermore, it also includes a pressure sensor disposed within the chute.

[0019] Furthermore, the pressure sensor is installed below the baffle structure.

[0020] The beneficial effects of this utility model are:

[0021] The material flow state detection device provided by this utility model includes a chute, an impeller, and a rotation speed detection structure. The chute has a channel for material to flow from top to bottom. The impeller is rotatably connected to the chute, and part of the impeller can contact the material during the material flow. The rotation speed detection structure is connected to the impeller and is used to detect the rotation state of the impeller in real time.

[0022] As material flows through the chute, some of the impeller contacts the material, causing the material to rotate. A speed detection structure connected to the impeller detects its rotation in real time, obtaining its rotational speed. By observing the detection results, workers can determine the presence and flow status of material in the chute. This detection device operates stably and reliably for extended periods, requires minimal maintenance, and is not easily affected by debris. Its accurate detection results reflect the material flow status, thereby improving production process smoothness and preventing accidents. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a front sectional view of the material flow state detection device provided in an embodiment of the present utility model;

[0025] Figure 2 A left-side sectional view of the material flow state detection device provided in this embodiment of the utility model;

[0026] Figure 3 This is a right-side sectional view of the material flow state detection device provided in an embodiment of the present invention.

[0027] icon:

[0028] 1-Chutter; 2-Impeller; 3-Speed ​​detection structure; 4-Shaft; 5-Baffle structure; 51-Guide baffle; 52-Drain plate; 6-Pressure sensor; 7-Bearing. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] It should be noted that in the description of this utility model, the terms "connection" and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Among the existing methods for detecting material flow, image-based methods cannot guarantee the quality of each image capture and require frequent camera cleaning; radar methods can only detect the presence or absence of material in the chute, but cannot describe the amount of material flow; and distance measurement methods are easily affected by obstructions or objects stuck to the chute walls, leading to inaccurate measurements.

[0033] Based on this, the present invention provides a material flow state detection device, referring to... Figures 1 to 3 The detection device includes a chute 1, an impeller 2, and a rotational speed detection structure 3, wherein:

[0034] The chute 1 has a channel for material to flow from top to bottom;

[0035] Impeller 2 is rotatably connected to chute 1, and the blades on one side of impeller 2 can come into contact with the material during the material flow process;

[0036] The rotational speed detection structure 3 is connected to the impeller 2 and is used to detect the rotational state of the impeller 2 in real time.

[0037] As the material flows in the chute 1, the blades on one side of the impeller 2 come into contact with the material, causing the material to drive the impeller 2 to rotate while it is flowing. The speed detection structure 3 is connected to the impeller 2 and can detect the rotation state of the impeller 2 in real time to obtain the speed of the impeller 2. By observing the detection results of the speed detection structure 3, the staff can determine whether there is material in the chute 1 and the flow state of the material.

[0038] Specifically, when impeller 2 is not rotating, it indicates that there is no material or blockage in chute 1. The rotational speed of impeller 2 is positively correlated with the material flow velocity; the higher the rotational speed of impeller 2, the higher the material flow velocity. The material flow rate can be estimated by observing the material flow velocity. Thus, by observing the rotational state of impeller 2, operators can obtain the material flow status. The detection device can operate stably and reliably for a long time, requires no frequent maintenance, and is not easily affected by debris. Its detection results can accurately reflect the material flow status, thereby improving the smoothness of the production process and preventing accidents.

[0039] Furthermore, the detection device also includes a rotating shaft 4, with the impeller 2 mounted on the rotating shaft 4, and both ends of the rotating shaft 4 rotatably connected to the wall of the chute 1. (Refer to...) Figure 2The two ends of the rotating shaft 4 are rotatably mounted on the wall of the chute 1 via bearings 7. One end of the rotating shaft 4 passes through the chute 1 and is connected to the speed detection structure 3. This can separate the speed detection structure 3 from the material and prevent the speed detection structure 3 from being damaged due to long-term contact with the material.

[0040] In this embodiment, the rotation speed detection structure 3 includes an encoder; one end of the rotating shaft 4 extends from the chute 1 and is connected to the encoder. When the encoder detects rotation, it outputs a description of the material flow rate in the chute 1, allowing the operator to estimate the material's velocity and flow rate using empirical formulas. When the encoder detects no rotation, there is no material or blockage in the chute 1.

[0041] In other embodiments, the rotational speed detection structure 3 includes a photoelectric sensor and a trigger plate disposed on the rotating shaft 4; the photoelectric sensor is disposed around the periphery of the rotating shaft 4 and can be triggered when the trigger plate rotates to its detection end. The rotational speed of the rotating shaft 4 can be calculated by the number of triggers of the photoelectric sensor per unit time, thereby determining the flow state of the material.

[0042] Continue to refer to Figure 1 The detection device also includes a baffle structure 5, which is disposed within the chute 1 and located above the impeller 2. The baffle structure 5 blocks the material and part of the impeller 2. During the flow of the material in the chute 1, the material flows to the baffle structure 5 for diversion. The left side of the impeller 2 is left unobstructed by the baffle structure 5, while the right side blades of the impeller 2 come into contact with the material and are impacted by the material flow, thereby achieving the effect of the material driving the impeller 2 to rotate.

[0043] In this embodiment, the material blocking structure 5 includes a flow guide baffle 51, with a portion of the impeller 2 positioned directly below the flow guide baffle 51. The flow guide baffle 51 is inclined from top to bottom, allowing material to slide down along it. This not only blocks part of the impeller 2 but also prevents material from accumulating above the flow guide baffle 51.

[0044] Based on the above structure, the baffle structure 5 also includes a guide plate 52. The upper end of the guide plate 52 is connected to the guide baffle 51, and the lower end of the guide plate 52 is inclined towards one side of the impeller 2. The guide plate 52 is used to guide the material to one side of the impeller 2 blades, so that the impeller 2 rotates smoothly.

[0045] Specifically, the guide baffle 51 and the guide plate 52 are integrally formed, and their connecting surfaces are perpendicularly aligned with the axis of the impeller 2. The guide baffle 51 and the guide plate 52 are arranged in an inverted L-shape, and their connecting surfaces are perpendicularly aligned with the axis of the impeller 2. When the material flows to the connecting position of the guide baffle 51 and the guide plate 52, it is diverted. A portion of the material flows downward along the guide baffle 51, bypassing one side of the impeller 2, while another portion of the material flows downward from the other side of the impeller 2 and pushes the blades of the impeller 2, causing the impeller 2 to rotate.

[0046] In other embodiments, the baffle structure 5 can also be configured as an inverted U-shaped plate structure or a shell structure. The blades on one side of the impeller 2 do not contact the material under the protection of the baffle structure 5, while the blades on the other side of the impeller 2 contact the material during the material flow, thereby achieving the effect of the material driving the impeller 2 to rotate.

[0047] Continue to refer to Figure 1 The detection device also includes a pressure sensor 6 installed inside the chute 1. The material exerts pressure on the pressure sensor 6 during its flow, thus the presence of material in the chute 1 can be determined by the detection result of the pressure sensor 6.

[0048] In this embodiment, the pressure sensor 6 is installed below the baffle structure 5. Specifically, the pressure sensor 6 is fixed below the flow guide baffle 51 and can detect whether there is material above the flow guide baffle 51. The baffle structure 5 can alleviate the impact force of the material on the pressure sensor 6 and prevent damage to the pressure sensor 6.

[0049] In summary, the detection principle of the detection device provided in this embodiment is as follows:

[0050] When the speed detection structure 3 detects the rotation of the impeller 2, it outputs a description of the speed of material flow in the chute 1 through the speed of the impeller 2, and the material flow rate can be estimated by empirical formulas.

[0051] When the speed detection structure 3 detects that the impeller 2 is not rotating and the pressure sensor 6 detects that there is no material on the guide baffle 51, it indicates that the flow in the chute 1 is interrupted or there is no material.

[0052] When the speed detection structure 3 detects that the impeller 2 is not rotating and the pressure sensor 6 detects that there is material on the guide baffle 51, it indicates that the chute 1 is blocked.

[0053] The detection device provided in this embodiment can determine whether there is material in the chute 1, whether there is blockage, and the flow rate and volume of the material. Its detection results are accurate and comprehensive. In addition, the rotation speed detection structure 3 is installed on the outside of the chute 1 and is not affected by dust. The pressure sensor 6 is protected by the material blocking structure 5 and does not come into contact with the material. All electrical components are installed in a safe environment. Therefore, the device has strong operational stability and low maintenance.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A material flow state detection device, characterized in that, It includes a chute (1), an impeller (2), and a speed detection structure (3), wherein: The chute (1) has a channel for materials to flow from top to bottom; The impeller (2) is rotatably connected to the chute (1), and the blades on one side of the impeller (2) can contact the material during the material flow process; The rotational speed detection structure (3) is connected to the impeller (2) and is used to detect the rotational state of the impeller (2) in real time.

2. The material flow state detection device according to claim 1, characterized in that, It also includes a rotating shaft (4), on which the impeller (2) is mounted, and both ends of the rotating shaft (4) are rotatably connected to the wall of the chute (1).

3. The material flow state detection device according to claim 2, characterized in that, The rotational speed detection structure (3) includes an encoder; one end of the rotating shaft (4) extends out from the chute (1) and is connected to the encoder.

4. The material flow state detection device according to claim 1, characterized in that, It also includes a baffle structure (5), which is disposed in the chute (1) and located above the impeller (2), and the baffle structure (5) blocks the material between the material and part of the impeller (2).

5. The material flow state detection device according to claim 4, characterized in that, The baffle structure (5) includes a flow guide baffle (51), and part of the impeller (2) is disposed directly below the flow guide baffle (51).

6. The material flow state detection device according to claim 5, characterized in that, The flow guide baffle (51) is inclined from top to bottom.

7. The material flow state detection device according to claim 5, characterized in that, The baffle structure (5) also includes a flow guide plate (52), the upper end of which is connected to the flow guide baffle (51), and the lower end of which is inclined toward one side of the impeller (2).

8. The material flow state detection device according to claim 7, characterized in that, The flow guide baffle (51) and the flow guide plate (52) are integrally formed, and their connecting surfaces are perpendicularly aligned with the axis of the impeller (2).

9. The material flow state detection device according to claim 4, characterized in that, It also includes a pressure sensor (6) disposed in the chute (1).

10. The material flow state detection device according to claim 9, characterized in that, The pressure sensor (6) is installed below the baffle structure (5).

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