Device for detecting blockage of blanking chute

Abstract

The utility model provides a device for detecting blockage of a blanking chute. The device comprises the blanking chute, the anti-overflow hole is formed in the outer side face of the discharging chute; the anti-overflow assembly is arranged on the outer side face of the discharging chute, the anti-overflow assembly comprises an anti-overflow plate, rotating shafts and hinging pieces, the two rotating shafts and the two hinging pieces are symmetrically arranged, the two hinging pieces are symmetrically arranged on the upper portion of the anti-overflow hole, and the anti-overflow plate is fixedly connected with the rotating shafts and matched with the hinging pieces to achieve hinging; the detection assembly is arranged on the outer side face of the discharging chute, the detection assembly is arranged close to the anti-overflow hole, the detection assembly comprises a detection element, a fixing plate, a PLC and a detection sample plate, the detection element is fixed to the fixing plate, the detection sample plate is fixed to the anti-overflow plate, the fixing plate is arranged close to the detection sample plate, and the detection element is connected with the PLC. Non-contact design is adopted, so that overflowed materials cannot contact the detection element, the detection element is prevented from being abraded, the service life is prolonged, and the equipment failure rate is reduced.

Description

Technical Field

[0001] The utility model relates to the field of material blocking detection of material conveying equipment, in particular to a detection device for material blocking of a material discharge chute. Background Art

[0002] Belt conveyors have strong conveying capacity, long conveying distance, simple structure, easy maintenance, and can easily implement programmed control and automated operation. They are widely used in transportation and handling in industries such as steel, electricity, coal mining, and ports. When transporting powdery or granular materials, a material chute is often used in conjunction with a belt conveyor. However, in daily work, the material chute often has a blockage failure, causing the material to overflow. The overflowing material will overflow the material chute, and the material will wear (break) the material belt, causing production downtime.

[0003] In the prior art, a material blockage detection device is provided on the belt conveyor unloading chute of the belt conveyor to prevent the belt conveyor from being stopped in time when a material blockage occurs, so as to prevent the material from overflowing and damaging (breaking) the feeding belt. However, there are many types of existing material blockage detection devices, including video recognition, rotary level switch and direct contact type, among which the commonly used detection method is direct contact type. The detection elements of the direct contact detection device are mostly set inside the unloading chute. When the material overflows, the overflowed material comes into contact with the detection element, which will cause excessive wear of the detection element, thereby reducing the service life of the detection element. In addition, there is a phenomenon that a lot of material falls and damages the detection element, requiring maintenance personnel to repeatedly repair it, reducing production efficiency and increasing equipment consumption.

[0004] The utility model attempts to solve the above problems and proposes a detection device for material blockage in a material discharge chute. The device adopts a non-contact design so that overflowed materials will not contact the detection element, thereby avoiding excessive wear of the detection element, extending the service life, reducing the equipment failure rate, and ensuring production efficiency. At the same time, it saves power consumption of the transmission motor (rotating motor), reduces equipment consumption and maintenance workload, and reduces equipment cost and maintenance cost. Utility Model Content

[0005] The utility model provides a device for detecting material blockage in a material discharge chute, wherein an overflow prevention hole is opened on the side of the material discharge chute, and an overflow prevention component is arranged in the overflow prevention hole, and an overflow prevention plate is hingedly fixed to the upper part of the overflow prevention hole through a rotating shaft and a hinge, so that the overflow prevention plate covers the overflow prevention hole, and a detection component is arranged outside the material discharge chute at the same time, so that the detection component cooperates with the overflow prevention plate, and a detection sample is fixed on the overflow prevention plate by utilizing the principle that the material exceeding the overflow prevention hole pushes open the overflow prevention plate, when material blockage occurs, the detection sample rotates with the overflow prevention plate, so that the detection element detects the moving detection sample, thereby obtaining a result of material blockage, wherein the detection component is arranged outside the material discharge chute, so that the material does not contact the detection element, and there is no risk of the material damaging the detection element, thereby avoiding excessive wear of the detection element, extending the service life, reducing the equipment failure rate, and ensuring production efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a device for detecting material blockage in a material discharge chute, comprising:

[0007] Unloading chute;

[0008] An anti-overflow hole, which is a square hole and is arranged on the outer side of the unloading chute;

[0009] An anti-overflow component, the anti-overflow component is arranged on the outer side of the discharge chute, the anti-overflow component includes an anti-overflow plate, a rotating shaft and a hinge, the shape of the anti-overflow plate is the same as the shape of the anti-overflow hole, the area of ​​the anti-overflow plate is larger than the area of ​​the anti-overflow hole, two hinges and two rotating shafts are provided, wherein the two rotating shafts and the two hinges are symmetrically arranged, and the two hinges are symmetrically arranged on the upper part of the anti-overflow hole on the outer side of the discharge chute, the top of the anti-overflow plate is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft cooperates with the hinge to achieve hinged connection; and

[0010] A detection component, wherein the detection component is arranged on the outer side of the discharge chute, the detection component comprises a detection element, a fixed plate, a PLC controller and a detection template, one end of the fixed plate is arranged on the left side of the anti-overflow hole, the detection element is fixed on the other end of the fixed plate, the detection template is fixed on the left bottom corner frame of the anti-overflow plate, the detection template is arranged close to the fixed plate, and the detection element is connected to the PLC controller.

[0011] Furthermore, the anti-overflow hole and the anti-overflow plate are both square or rectangular.

[0012] Furthermore, the length of the detection sample is smaller than the length of the fixing plate.

[0013] Furthermore, the rotating shaft is L-shaped, one end of the rotating shaft is connected to the top of the anti-overflow plate, and the other end of the rotating shaft is hinged to the hinge.

[0014] Furthermore, the detection element is a limit switch.

[0015] Furthermore, the device for detecting blockage in the material discharge chute also includes a computer control end, and the computer control end is connected to the PLC controller.

[0016] Compared with the prior art, a device for detecting material blockage in a material discharge chute according to an embodiment of the utility model is provided, by opening an overflow prevention hole on the outer side of the material discharge chute, so that the material is discharged through the overflow prevention hole when overflowing, and an overflow prevention component is arranged at the overflow prevention hole, the overflow prevention plate of the overflow prevention component is fixed to the rotating shaft, and is hinged to the hinge fixed to the outer side of the material discharge chute through the rotating shaft, so that the overflow prevention plate covers the overflow prevention hole to suppress dust when there is no material blockage, and when there is material blockage, it is convenient for the blocked material to push the overflow prevention plate open and be discharged directly, and at the same time, it returns to the initial position in time after the blocked material is cleaned, and the detection component is arranged according to the two states of the overflow prevention plate whether there is material blockage or not, wherein the detection component The detection element is arranged on the outer side of the discharge chute, and the detection template is arranged on the anti-overflow plate. When the anti-overflow plate is in a blocked state and is displaced at a certain angle, the detection element will detect the detection template and send a corresponding signal to the PLC controller of the detection component, so that the PLC controller can shut down the corresponding motion component according to the programmed program to reduce the possibility of greater material blockage. The detection component is arranged on the outer side of the discharge chute to avoid contact between the material and the detection element, thereby reducing the wear of the detection element, extending the service life of the detection element, reducing the failure rate of the detection device, reducing the workload of personnel maintenance, and reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a device for detecting material blockage in a material discharge chute according to the utility model;

[0018] Figure 2 It is a schematic diagram of the assembly structure of an anti-overflow component of a device for detecting material blockage in a material discharge chute according to the utility model;

[0019] Figure 3 A side view of the overall structure of a device for detecting material blockage in a material discharge chute according to the utility model; and

[0020] Figure 4 The utility model is a structural schematic diagram of a detection sample plate and an anti-overflow plate for detecting a blockage state of a material discharge chute blockage detection device.

[0021] Reference numerals:

[0022] 1. Unloading chute; 2. Anti-overflow hole; 3. Anti-overflow assembly; 301. Anti-overflow plate; 302. Rotating shaft; 303. Articulated part;

[0023] 4. Detection element; 5. Fixing plate; 6. Detection sample. DETAILED DESCRIPTION

[0024] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a device for detecting material blockage in a material discharge chute according to an embodiment of the utility model includes:

[0026] A material discharge chute 1 is used to receive powdered or granular materials transported by a belt conveyor, and the powdered or granular materials fall into the conveyor belt arranged below through the material discharge chute 1; an anti-overflow hole 2 is arranged on the outer side of the material discharge chute 1 and is at a certain height from the bottom of the material discharge chute 1. When the material discharge chute 1 is blocked, the overflowed materials flow out through the anti-overflow hole 2 without increasing the blockage; an anti-overflow component 3 is arranged on the outer side of the material discharge chute 1, and the anti-overflow component 3 cooperates with the anti-overflow hole 2, so that when the material discharge chute 1 is not blocked, the anti-overflow component 3 can be prevented from flowing out through the anti-overflow hole 2. It can prevent materials from falling directly from the overflow prevention hole 2 and has the function of suppressing dust. When the material discharge chute 1 is blocked, the excessive overflowed materials can easily push open the overflow prevention plate 301 of the overflow prevention component 3, and discharge the excessive overflowed materials from the overflow prevention hole 2, so as to prevent the blockage accident from further increasing. The detection component is also arranged on the outer side of the material discharge chute 1 and close to the overflow prevention component 3, so that the detection component cooperates with the overflow prevention component 3, wherein the detection element 4 of the detection component detects whether the detection sample 6 arranged on the overflow prevention plate 301 of the overflow prevention component moves, thereby determining whether the material discharge chute 1 is blocked.

[0027] like Figure 2 and Figure 4 As shown, the overflow prevention assembly 3 includes an overflow prevention plate 301, a rotating shaft 302 and a hinge 303. The overflow prevention plate 301 has the same shape as the overflow prevention hole 2, and the area of ​​the overflow prevention plate 301 is larger than the area of ​​the overflow prevention hole 2, so that the overflow prevention plate 301 covers the overflow prevention hole 2. There are two rotating shafts 302 and two hinges 303, and the two rotating shafts 302 and the two hinges 303 are symmetrically arranged, wherein one end of the rotating shaft 302 is fixedly connected to the top frame of the overflow prevention plate 301, and the other end of the rotating shaft 302 is hinged to the hinge 303, and the two hinges 303 are symmetrically arranged at the top of the overflow prevention hole 2 located on the outer side of the discharge chute 1, so that the overflow prevention plate 301 can realize the hinged flip movement through the hinge of the rotating shaft 302 and the hinge 303.

[0028] like Figure 1 , Figure 3 and Figure 4As shown, the detection component includes a detection element 4, a fixed plate 5, a PLC controller and a detection template 6, wherein one end of the fixed plate 5 is vertically arranged on the outer side of the unloading chute 1, the fixed plate 5 is arranged near the left side of the anti-overflow hole 2, and the detection template 6 is fixed at the left bottom corner frame of the bottom of the anti-overflow plate 301, wherein the detection template 6 is arranged near the fixed plate 5, the detection element 4 is fixed on the other end of the fixed plate 5, and the detection element 4 is connected to the PLC controller. When the anti-overflow plate 2 moves, it will drive the detection template 6 on the anti-overflow plate 2 to move at the same time. At this time, the detection element 4 and the detection template 6 are matched, and the detection element 4 generates a corresponding electrical signal and transmits the electrical signal to the PLC controller for processing. The program programmed in the PLC controller determines that the electrical signal is a blocking signal according to the type of the electrical signal, and processes the blocking signal into an electrical signal for starting or stopping multiple facilities, such as transmitting an electrical signal to stop the motor of the unloading conveyor belt, so that the motor stops in time to prevent excessive material from blocking and causing greater production accidents.

[0029] Furthermore, the anti-overflow hole 2 and the anti-overflow plate 301 are square or rectangular, and the anti-overflow plate 301 is made of thin steel plate. The thin steel plate has a certain gravity and will not be blown away by the airflow generated by the falling materials, thereby suppressing dust. At the same time, when the materials overflow, the excessive materials can push open the anti-overflow plate 301, and the overflowed materials will not be unable to push open the anti-overflow plate 301 due to the excessive thickness of the steel plate.

[0030] Further, such as Figure 2 , Figure 3 and Figure 4 As shown, the length of the detection template 6 is less than that of the fixed plate 5. When the anti-overflow plate 301 is in a stationary state, the detection element 4 at the other end of the fixed plate 5 cannot detect the detection template 6, but when the anti-overflow plate 301 rotates, the detection element 4 will detect the detection template 6.

[0031] Further, such as Figure 1 , Figure 2 and Figure 4 As shown, the rotating shaft 302 is L-shaped, one end of the rotating shaft 302 is connected to the top of the anti-overflow plate 301, and the other end of the rotating shaft 302 is hinged to the hinge 303. The anti-overflow plate 301 can achieve flipping movement at the hinge of the rotating shaft 302 and the hinge 303.

[0032] Further, such as Figure 2 , Figure 3 and Figure 4 As shown, the detection element 4 is a limit switch. The limit switch realizes different signal transmission by detecting whether there is an object blocking the sensor. In the initial state, there is no obstruction in front of the limit switch, and after the blockage occurs, there will be a detection sample blocking the limit switch, thereby generating a blocking electrical signal.

[0033] Furthermore, the detection device for material blockage in the material discharge chute also includes a computer control end, which is connected to a PLC controller so that the computer control end can display the status of the detection device in real time and can control the actions of each component through the computer control end.

[0034] In the embodiment of the present utility model, Figure 1 As shown, at this time, the material chute 1 is in an unblocked state, the overflow plate 301 covers the overflow hole 2, and the front end of the sensor of the detection element 4 cannot sense the detection sample 6. At this time, the detection element 4 does not send a blocking signal to the PLC controller, and the computer control end shows that it is working normally. Figure 4 As shown, when the unloading chute 1 is blocked, the material reaches the anti-overflow hole 2 after a period of accumulation, and the material exceeding the anti-overflow hole 2 pushes the anti-overflow plate 301, and the anti-overflow plate 301 is rotated by the rotating shaft 302 connected to the top and the hinge 303 set on the unloading chute 1. The anti-overflow plate 302 has a certain opening counterclockwise with the hinge as the center, so that the material exceeding the anti-overflow hole 2 flows out from this opening. At this time, the detection sample 6 on the anti-overflow plate 301 moves with the anti-overflow plate 301, so that the sensor at the front end of the detection element 4 is blocked by the detection sample 6, and the detection element 4 sends a blocking signal to the PLC controller. At the same time, the PLC controller generates a signal according to the internal code. The program setting sends a stop signal to the components that need to be stopped, and shuts down the conveyor belt in time. At this time, the computer control end will display the status of each component in real time, and issue a material blockage warning to notify personnel to go. After the personnel complete the material blockage, the material that has not overflowed continues to push open the anti-overflow plate 301, and the anti-overflow plate 301 will drop due to its own weight, so that the anti-overflow plate 301 returns to the initial position to cover the anti-overflow hole 2. At this time, the detection element 4 cannot sense the detection sample 6 on the anti-overflow plate 301, and no longer sends a blockage electrical signal to the PLC controller. The computer control end synchronizes with the PLC controller and displays a normal working state. The personnel then control the operation of the belt conveyor motor through the computer control end.

[0035] According to a device for detecting material blockage in a material discharge chute according to an embodiment of the utility model, by opening an anti-overflow hole on the outer side of the material discharge chute, the material exceeding the anti-overflow hole can be discharged in time to prevent larger material blockage. In the utility model, an anti-overflow component is arranged at the anti-overflow hole, and the anti-overflow component includes an anti-overflow plate, a rotating shaft and a hinge. The anti-overflow plate is hinged to the hinge symmetrically arranged on the upper part of the anti-overflow hole through the rotating shaft, so that the anti-overflow plate can cover the anti-overflow hole in an unblocked state, thereby playing a role in dust suppression. At the same time, the material exceeding the anti-overflow hole can easily push the anti-overflow plate to open a certain opening and be discharged from the opening, thereby realizing the flexible rotation of the anti-overflow plate. In the utility model, the overflow plate of the overflow prevention component can be easily pushed open to a certain opening by the material exceeding the overflow prevention hole, and a detection component is set, wherein the detection component includes a detection element, a fixed plate, a PLC controller and a detection template, and the detection template is vertically set on one side of the bottom of the overflow prevention plate, and the detection element is fixed to the outer side of the material discharge chute through the fixed plate, and the fixed plate is close to the detection template. When the overflow prevention plate is pushed open to a certain opening, the detection template moves with the overflow prevention plate, so that the detection element senses the detection template, sends a blocking electrical signal to the PLC controller, and performs subsequent shutdown and warning operations according to the program set by the PLC controller. The detection element is located on the outer side of the material discharge chute, so that the overflowed material does not contact the detection element, reducing the risk of material falling and damaging the detection element, reducing the failure rate of the detection device, and improving the service life of the detection device. In the utility model, by setting a computer control terminal, the computer control terminal is connected to the PLC controller to display the action status of each component in real time.

[0036] In the description of the present invention, it is necessary to understand that the terms “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A device for detecting material blockage in a material discharge chute, characterized in that: include: Unloading chute; An anti-overflow hole, which is a square hole and is arranged on the outer side of the unloading chute; An anti-overflow component, the anti-overflow component is arranged on the outer side of the discharge chute, the anti-overflow component includes an anti-overflow plate, a rotating shaft and a hinge, the shape of the anti-overflow plate is the same as the shape of the anti-overflow hole, the area of ​​the anti-overflow plate is larger than the area of ​​the anti-overflow hole, two hinges and two rotating shafts are provided, wherein the two rotating shafts and the two hinges are symmetrically arranged, and the two hinges are symmetrically arranged on the upper part of the anti-overflow hole on the outer side of the discharge chute, the top of the anti-overflow plate is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft cooperates with the hinge to achieve hinged connection; and A detection component, wherein the detection component is arranged on the outer side of the discharge chute, the detection component comprises a detection element, a fixed plate, a PLC controller and a detection template, one end of the fixed plate is arranged on the left side of the anti-overflow hole, the detection element is fixed on the other end of the fixed plate, the detection template is fixed on the left bottom corner frame of the anti-overflow plate, the detection template is arranged close to the fixed plate, and the detection element is connected to the PLC controller.

2. The device for detecting material blockage in a material discharge chute according to claim 1, characterized in that: The anti-overflow hole and the anti-overflow plate are both square or rectangular.

3. The device for detecting material blockage in a material discharge chute according to claim 1, characterized in that: The length of the detection sample is smaller than the length of the fixing plate.

4. The device for detecting material blockage in a material discharge chute according to claim 1, characterized in that: The rotating shaft is L-shaped, one end of the rotating shaft is connected to the top of the anti-overflow plate, and the other end of the rotating shaft is hinged to the hinge.

5. The device for detecting material blockage in a material discharge chute according to claim 1, characterized in that: The detection element is a limit switch.

6. The device for detecting material blockage in a material discharge chute according to claim 1, characterized in that: It also includes a computer control terminal, which is connected to the PLC controller.

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