Chute blockage detection device and belt conveyor

Abstract

The utility model provides a chute blockage detection device and a belt conveyor, and relates to the technical field of material conveying. The chute blockage detection device comprises a rotary driving part, a clutch, a blade and a detection part, the blades are connected with the driving end of the rotary driving piece through the clutch, and the blades are used for making contact with materials in the chute when the chute is blocked and stopping rotating when making contact with the materials; the detection part is used for detecting the state of the blade, outputting a first signal when the blade rotates and outputting a second signal when the blade stops rotating. When the materials are normally conveyed in the chute, the blades do not make contact with the materials, and the detection piece outputs a first signal. When the materials are hardened in the chute and block the chute, the materials are continuously stacked and cover the blades, so that the driving end of the rotary driving part cannot drive the blades to rotate through the clutch. When materials are conveyed, the detection piece outputs a second signal, the belt conveyor stops conveying the materials, large-range material blocking is not prone to being caused, and serious machine damage of the belt conveyor is not prone to being caused.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying, in particular to a chute blockage detection device and a belt conveyor. Background Art

[0002] During the operation of the belt conveyor, the material is prone to become wet and sticky, and the material will gradually block the chute of the belt conveyor. If the belt conveyor cannot be stopped in time, it will cause a large area of ​​material blockage and even cause serious damage to the belt conveyor. Utility Model Content

[0003] In order to solve the problems existing in the prior art, one of the purposes of the present utility model is to provide a chute blockage detection device.

[0004] The utility model provides the following technical solutions:

[0005] A chute blockage detection device includes a rotary drive member, a clutch, a blade, and a detection member;

[0006] The blade is connected to the driving end of the rotary drive member through the clutch, and the blade is used to contact the material in the chute when the chute is blocked and stop rotating when contacting the material;

[0007] The detecting member is used to detect the state of the blade, and output a first signal when the blade rotates, and output a second signal when the blade stops rotating.

[0008] As a further optional solution to the chute blockage detection device, the blade includes a connecting pin and a blade body;

[0009] One end of the connecting pin is connected to the driving end of the rotary driving member through the clutch, and the other end of the connecting pin is provided with a clamping groove, which extends along the axis direction of the connecting pin;

[0010] The blade body is embedded in the slot and connected to the connecting pin, and the blade body is used to contact the material in the chute.

[0011] As a further optional solution to the chute blockage detection device, one end of the blade body is embedded in the slot, and the blade body is used to contact the powdered granular material in the chute.

[0012] As a further optional solution to the chute blockage detection device, the blade body is symmetrically arranged about the axis of the connecting pin, and the blade body is used to contact the bulk material in the chute.

[0013] As a further optional solution to the chute blockage detection device, the chute blockage detection device also includes a shell and a transmission shaft rotatably arranged in the shell, the rotating drive member, the clutch and the detection member are all arranged inside the shell, the blade is located outside the shell, and the clutch is connected to the blade through the transmission shaft.

[0014] As a further optional solution for the chute blockage detection device, the detection component includes a microswitch and a circuit substrate, the microswitch is electrically connected to the circuit substrate, the microswitch is used to respond to the state change of the blade, and the circuit substrate outputs the first signal or the second signal based on the state of the microswitch.

[0015] Another object of the present invention is to provide a belt conveyor.

[0016] The utility model provides the following technical solutions:

[0017] A belt conveyor comprises a chute and the chute blockage detection device, wherein the chute blockage detection device is arranged in the chute, and the blade is located inside the chute.

[0018] As a further optional solution for the belt conveyor, at least one chute blockage detection device is provided, and at least one chute blockage detection device is provided at the upper end of the chute.

[0019] As a further optional solution for the belt conveyor, at least two chute blockage detection devices are provided, and at least one of the chute blockage detection devices is provided in the middle of the chute.

[0020] As a further optional solution to the belt conveyor, the side wall of the lower portion of the chute is provided with an opening;

[0021] The belt conveyor further includes a chute blockage detector provided at the opening, wherein the chute blockage detector includes a travel switch exposed to the interior of the chute through the opening.

[0022] The embodiments of the present utility model have the following beneficial effects:

[0023] When using the above-mentioned chute blockage detection device, it is installed on the chute of the belt conveyor, and the blades are placed inside the chute. When the material is conveyed normally in the chute, the blades are located above the material and do not contact the material. The driving end of the rotating drive member can drive the blades to rotate through the clutch. At this time, the detection member detects that the blades are in a rotating state and outputs a first signal, and the belt conveyor continues to convey the material. On the contrary, when the material is compacted in the chute and blocks the chute, the continuously conveyed material continues to stack up and cover the blades, making it impossible for the driving end of the rotating drive member to drive the blades to rotate through the clutch. At this time, the detection member detects that the blades are in a stopped rotating state and outputs a second signal. The belt conveyor stops conveying materials, which is less likely to cause large-scale blockages and serious machine damage to the belt conveyor.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 The figure shows the overall structure of a chute blockage detection device provided by an embodiment of the present utility model;

[0027] Figure 2 A schematic structural diagram of blades in a chute blockage detection device provided by an embodiment of the present utility model is shown;

[0028] Figure 3 A schematic structural diagram of blades in a chute blockage detection device provided by an embodiment of the present utility model is shown;

[0029] Figure 4 A schematic structural diagram of blades in a chute blockage detection device provided by an embodiment of the present utility model is shown;

[0030] Figure 5 A schematic structural diagram of blades in a chute blockage detection device provided by an embodiment of the present utility model is shown;

[0031] Figure 6 A schematic structural diagram of blades in a chute blockage detection device provided by an embodiment of the present utility model is shown;

[0032] Figure 7A schematic structural diagram of blades in a chute blockage detection device provided by an embodiment of the present utility model is shown;

[0033] Figure 8 A partial structural schematic diagram of a belt conveyor provided by an embodiment of the utility model is shown.

[0034] Description of main component symbols:

[0035] 10-chute blockage detection device; 20-chute; 30-chute blockage detector; 100-rotating drive member; 200-clutch; 300-blade; 310-connecting pin; 320-blade body; 400-detection member; 410-micro switch; 420-circuit board; 500-housing; 510-flange; 520-fixing nut; 600-drive shaft. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the template description herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Example

[0042] See also Figure 1 This embodiment provides a chute blockage detection device 10, specifically an all-round chute blockage detection and protection device, which includes a rotary drive member 100, a clutch 200, a blade 300 and a detection member 400.

[0043] The blade 300 is connected to the driving end of the rotary drive member 100 through the clutch 200. The blade 300 is used to rotate the chute 20 (see Figure 8 ) When blockage occurs, it contacts the material in the chute 20 and stops rotating when it contacts the material.

[0044] Accordingly, the detecting member 400 is used to detect the state of the blade 300 and output a first signal when the blade 300 rotates, and output a second signal when the blade 300 stops rotating.

[0045] When using the above-mentioned chute blockage detection device 10, it is installed on the chute 20 of the belt conveyor, and the blade 300 is placed inside the chute 20. When the material is normally transported in the chute 20, the blade 300 is located above the material and does not contact the material. The driving end of the rotary drive member 100 can drive the blade 300 to rotate through the clutch 200. At this time, the detection member 400 detects that the blade 300 is in a rotating state and outputs a first signal, and the belt conveyor continues to transport the material. On the contrary, when the material is compacted in the chute 20 and blocks the chute 20, the continuously transported material is continuously stacked and covers the blade 300, making it impossible for the driving end of the rotary drive member 100 to drive the blade 300 to rotate through the clutch 200. At this time, the detection member 400 detects that the blade 300 is in a stopped rotating state and outputs a second signal, and the belt conveyor stops transporting the material, which is not easy to cause large-scale blockage and serious machine damage to the belt conveyor.

[0046] For example, the rotary driving member 100 is a low-speed gear motor.

[0047] Specifically, the blade 300 is composed of a connecting pin 310 and a blade body 320 .

[0048] The axis of the connecting pin 310 coincides with the rotation axis of the rotary drive member 100. One end of the connecting pin 310 along the axial direction is connected to the driving end of the rotary drive member 100 via the clutch 200, and the other end of the connecting pin 310 along the axial direction is provided with a slot extending along the axial direction of the connecting pin 310.

[0049] Accordingly, the blade body 320 is embedded in the slot and connected to the connecting pin 310. When in use, the blade body 320 is used to contact the material in the chute 20 when the chute 20 is blocked.

[0050] Exemplarily, bolts are passed through the connecting pin 310 and the blade body 320 , and nuts are sleeved on the bolts, so that the connecting pin 310 and the blade body 320 are bolted and fixed.

[0051] In some embodiments, one end of the blade body 320 is embedded in the slot. When in use, the blade body 320 is used to contact the powdered granular material in the chute 20 when the chute 20 is blocked.

[0052] See also Figure 2 For example, the blade body 320 is square in shape, with its width parallel to the axis of the connecting pin 310 and its length perpendicular to the axis of the connecting pin 310. One end of the blade body 320 is inserted into the slot. Furthermore, the blade body 320 is 30 mm wide and 100 mm long.

[0053] See also Figure 3 Alternatively, the blade bodies 320 are arranged in a square shape and are two in number. The widthwise sides of the two blade bodies 320 are parallel to the axis of the connecting pin 310, and the lengthwise sides of the two blade bodies 320 are perpendicular to the axis of the connecting pin 310. One end of one blade body 320 is embedded in the slot and is hinged to the other end of the other blade body 320, allowing the two blade bodies 320 to be folded and unfolded. In addition, the width of the blade body 320 is 30 mm, and the total length of the two blade bodies 320 when unfolded is 200 mm.

[0054] See also Figure 4Alternatively, the blade body 320 is arcuate. The width of the blade body 320 gradually increases from the end closest to the connecting pin 310 to the end further away from the connecting pin 310, and the width of the blade body 320 at the end further away from the connecting pin 310 is 30 mm. Furthermore, the length of the blade body 320 along the axis of the connecting pin 310 is 132 mm. The width of the blade body 320 along the radial direction of the connecting pin 310 is 100 mm.

[0055] In other embodiments, the blade body 320 is symmetrically arranged about the axis of the connecting pin 310. When in use, the blade body 320 is used to contact the bulk material in the chute 20 when the chute 20 is blocked.

[0056] See also Figure 5 For example, the blade body 320 is square in shape, with its width parallel to the axis of the connecting pin 310 and its length perpendicular to the axis of the connecting pin 310. The middle of the blade body 320 along its length is embedded in the slot. Furthermore, the blade body 320 is 30 mm wide and 100 mm long.

[0057] See also Figure 6 Alternatively, the blade bodies 320 are arranged in a square shape and are two in number. The widthwise sides of the two blade bodies 320 are parallel to the axis of the connecting pin 310, and the lengthwise sides of the two blade bodies 320 are perpendicular to the axis of the connecting pin 310. The two blade bodies 320 intersect at the middle of their lengthwise direction and are embedded in the slot. Furthermore, the blade bodies 320 are 30 mm wide and 100 mm long.

[0058] See also Figure 7 Alternatively, the blade body 320 is square in shape, with the lengthwise sides of the blade body 320 parallel to the axis of the connecting pin 310, the widthwise sides of the blade body 320 perpendicular to the axis of the connecting pin 310, and the middle portion of the widthwise portion of the blade body 320 embedded in the slot. Furthermore, the blade body 320 is 65 mm wide and 80 mm long.

[0059] Therefore, the chute blockage detection device 10 can replace different blades 300 according to the form of material blockage.

[0060] Please refer again Figure 1 In some embodiments, the chute blockage detection device 10 further includes a housing 500 and a transmission shaft 600 rotatably disposed within the housing 500 .

[0061] In addition, the rotary driving member 100 , the clutch 200 and the detecting member 400 are all arranged inside the housing 500 , the blade 300 is located outside the housing 500 , and the clutch 200 is connected to the blade 300 via the transmission shaft 600 .

[0062] Specifically, the axis of the transmission shaft 600 coincides with the rotation axis of the rotary drive member 100, and the transmission shaft 600 is rotatably disposed within the housing 500 via a bearing. One end of the transmission shaft 600 along its own axis is connected to the clutch 200, and the other end of the transmission shaft 600 along its own axis is connected to the connecting pin 310.

[0063] For example, the transmission shaft 600 and the connecting pin 310 may be threadedly engaged to facilitate quick disassembly and replacement of the blade 300 .

[0064] Furthermore, the outer wall of the housing 500 is provided with a shoulder, which is fitted with a flange 510 and a fixing nut 520. The fixing nut 520 is threadedly engaged with the housing 500, while simultaneously holding the flange 510 against the shoulder, thereby securing the flange 510 to the housing 500. Furthermore, the flange 510 is further used to securely connect to the chute 20.

[0065] In some embodiments, the detection member 400 is composed of a micro switch 410 and a circuit substrate 420 , and the micro switch 410 is electrically connected to the circuit substrate 420 .

[0066] The micro switch 410 is used to respond to the state change of the blade 300. Accordingly, the circuit substrate 420 outputs a first signal or a second signal based on the state of the micro switch 410.

[0067] Specifically, when the material contacts the blade 300, the blade 300 stops rotating, closing a contact of the micro switch 410 and causing the circuit board 420 to output a second signal. When the blade 300 is no longer covered by the material, the blade 300 resumes rotating, the micro switch 410 returns to its normal state, and the circuit board 420 outputs the first signal.

[0068] In summary, the above-mentioned chute blockage detection device 10 utilizes the rotating drive member 100 to drive the blade 300 to rotate through the clutch 200, and then determines whether there is a blockage in the chute 20 by detecting whether the blade 300 is rotating. When the blockage occurs, the belt conveyor can be promptly instructed to stop conveying materials, thereby avoiding large-scale blockage and preventing serious damage to the belt conveyor.

[0069] See also Figure 8This embodiment also provides a belt conveyor for use in ports, warehouses, transportation, and other industries, particularly bulk cargo ports. The belt conveyor includes a chute 20 and the aforementioned chute blockage detection device 10. The chute blockage detection device 10 is disposed within the chute 20, with a blade 300 positioned within the chute 20.

[0070] In some embodiments, an opening is provided on the lower sidewall of the chute 20. Accordingly, the belt conveyor further comprises a chute blockage detector 30 provided at the opening, and the chute blockage detector 30 comprises a travel switch exposed to the interior of the chute 20 through the opening.

[0071] When the material in the chute 20 is blocked to the opening position, the material touches the travel switch of the chute blockage detector 30, triggering an interlock shutdown.

[0072] Thus, the chute blockage detector 30 is provided so as to detect whether there is material blockage in the chute 20. In addition, the chute blockage detector 30 is provided at the lower portion of the chute 20 for easy maintenance and overhaul.

[0073] Specifically, when the limit switch is triggered by material blocking chute 20, the corresponding normally open relay in the control cabinet is energized and closed, closing the fault program, generating a fault signal. This fault signal is transmitted through the first-out fault function module, generating a material jam first-out fault output signal. This signal is located by the 1618 intelligent local control module and then transmitted to the control cabinet gateway. The gateway then transmits the fault signal to the central control PLC, which issues a motor stop signal, halting the belt conveyor's drive motor. Ultimately, the belt conveyor shuts down, completing the entire material jam protection process.

[0074] Furthermore, when the material moisture content reaches 20%-30%, the material becomes sticky and begins to compact at the top of the chute 20, gradually blocking it. The chute blockage detector 30 located at the bottom of the chute 20 is unable to detect the blocked material flow. To address this situation, at least one chute blockage detection device 10 is provided, with at least one device located at the top of the chute 20, to promptly detect any blocked material flow and halt delivery.

[0075] Furthermore, when the material moisture content reaches 30% or more, the material is extremely wet and sticky, and material blockage may occur anywhere above the opening. Material compaction may begin at the top or middle of the chute 20, gradually blocking the chute 20. To address this situation, at least two chute blockage detection devices 10 are provided, with at least one chute blockage detection device 10 located at the top of the chute 20 and at least one located in the middle of the chute 20. This prevents blockages in the middle and top sections, and works in conjunction with the chute blockage detector 30 at the bottom to achieve comprehensive chute 20 blockage detection.

[0076] It can be understood that by connecting the action point of the chute blockage detection device 10 in parallel with the chute blockage detector 30, whether the blockage in the chute 20 triggers the chute blockage detector 30 at the bottom, or the material is compacted and blocked in the middle and upper parts, the normally open point of the blockage fault in the program will be closed, causing the blockage fault interlock to take effect, causing the belt conveyor to stop conveying and completing the entire protection.

[0077] In some embodiments, the above-mentioned belt conveyor also includes a frame, a head funnel, a chute, a wind shield, a machine cover, a waterproof cover, a windproof chain and a windproof rod, a safety railing and a safety cover, an inspection ladder and a crossing bridge, a drive device frame, a tensioning device tower, ancillary equipment and facilities pipe racks and other ancillary equipment and facilities, which are not described in detail in this embodiment.

[0078] In summary, the above-mentioned belt conveyor realizes all-round blockage detection of the chute 20 by providing the chute blockage detector 30 and one or more chute blockage detection devices 10, thereby ensuring that the belt conveyor can be reliably stopped when the chute 20 is blocked.

[0079] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0080] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0081] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A chute blockage detection device, characterized in that: It includes a rotating drive part, a clutch, blades and a detection part; The blade is connected to the driving end of the rotary drive member through the clutch, and the blade is used to contact the material in the chute when the chute is blocked and stop rotating when contacting the material; The detecting member is used to detect the state of the blade, and output a first signal when the blade rotates, and output a second signal when the blade stops rotating.

2. The chute blockage detection device according to claim 1, characterized in that: The blade includes a connecting pin and a blade body; One end of the connecting pin is connected to the driving end of the rotary driving member through the clutch, and the other end of the connecting pin is provided with a clamping groove, which extends along the axis direction of the connecting pin; The blade body is embedded in the slot and connected to the connecting pin, and the blade body is used to contact the material in the chute.

3. The chute blockage detection device according to claim 2, characterized in that: One end of the blade body is embedded in the slot, and the blade body is used to contact the powdered granular material in the chute.

4. The chute blockage detection device according to claim 2, characterized in that: The blade body is symmetrically arranged about the axis of the connecting pin, and the blade body is used to contact the bulk material in the chute.

5. The chute blockage detection device according to any one of claims 1 to 4, characterized in that: The chute blockage detection device also includes a shell and a transmission shaft rotatably arranged in the shell. The rotating drive member, the clutch and the detection member are all arranged inside the shell. The blade is located outside the shell, and the clutch is connected to the blade through the transmission shaft.

6. The chute blockage detection device according to any one of claims 1 to 4, characterized in that: The detection component includes a micro switch and a circuit substrate. The micro switch is electrically connected to the circuit substrate. The micro switch is used to respond to a state change of the blade. The circuit substrate outputs the first signal or the second signal based on the state of the micro switch.

7. A belt conveyor, characterized in that: It comprises a chute and a chute blockage detection device according to any one of claims 1 to 6, wherein the chute blockage detection device is arranged in the chute, and the blade is located inside the chute.

8. The belt conveyor according to claim 7, characterized in that: At least one chute blockage detection device is provided, and at least one chute blockage detection device is provided at the upper end of the chute.

9. The belt conveyor according to claim 8, characterized in that At least two chute blockage detection devices are provided, and at least one of the chute blockage detection devices is provided in the middle of the chute.

10. The belt conveyor according to any one of claims 7 to 9, characterized in that: The side wall of the lower portion of the chute is provided with an opening; The belt conveyor further includes a chute blockage detector provided at the opening, wherein the chute blockage detector includes a travel switch exposed to the interior of the chute through the opening.

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