CN221265219U - Feeding equipment - Google Patents

Abstract

The utility model relates to a feeding device, which comprises a conveying device (10), a first detection assembly (20), a second detection assembly (30) and a control device, wherein the conveying device (10) is used for conveying materials; a first detection assembly (20) configured to detect a distribution of material on a conveying surface of the conveying device (10); a second detection assembly (30) configured to detect whether there is material on the conveyor (10); the control device is in signal connection with the first detection assembly (20) and the second detection assembly (30), and is configured to judge whether the working state of the first detection assembly (20) is abnormal according to the detection result of the second detection assembly (30).

Description

Feeding equipment

Technical Field

The utility model relates to the technical field of tobacco, in particular to feeding equipment.

Background

In the production and processing process of tobacco, the feeder is used as one of important equipment in a tobacco manufacturing workshop of a tobacco enterprise, and has the main functions of buffering materials, matching with an electronic belt scale and a metering tube to stabilize the material flow in subsequent procedures, and is necessary prepositive equipment of key equipment in each process section of a tobacco manufacturing line, and the stability of conveying the materials by the feeder can influence the quality of the subsequent tobacco shred production.

It should be noted that the information disclosed in the background section of the present utility model is only for increasing the understanding of the general background of the present utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of utility model

The utility model provides feeding equipment which can ensure the efficiency and stability of material conveying.

According to one aspect of the present utility model, there is provided a feeding apparatus comprising:

The conveying device is used for conveying materials;

A first detection assembly configured to detect a distribution of material on a conveying surface of the conveying device;

A second detection assembly configured to detect whether there is material on the conveyor; and

And the control device is in signal connection with the first detection component and the second detection component and is configured to judge whether the working state of the first detection component is abnormal according to the detection result of the second detection component.

In some embodiments, the first detection assembly includes a plurality of sensors configured to detect whether there is material at a preset location on the conveyor to obtain a distribution of material on a conveying surface of the conveyor from the detection results of the plurality of sensors.

In some embodiments, the control device is configured to determine that the operational status of the first detection assembly is abnormal if the second detection assembly detects no material on the conveyor and the at least one sensor detects material.

In some embodiments, the sensor comprises a correlation photosensor.

In some embodiments, the second detection assembly includes a first detector disposed at a first end of the conveyor, the first detector configured to detect at least the presence of material from its location to a second end of the conveyor.

In some embodiments, the second detection assembly further comprises a second detector disposed at the second end of the conveyor, the second detector being configured to detect at least whether there is material from its location to the first end of the conveyor, and the second detector being mounted at a different height from the conveying surface of the conveyor than the first detector.

In some embodiments, the first detector and/or the second detector comprise a diffuse reflective photosensor.

In some embodiments, the feeding apparatus further comprises an alarm device in signal connection with the control device, the alarm device being configured to issue an alarm signal in case the control device determines that the operational state of the first detection assembly is abnormal.

In some embodiments, the feeding apparatus further comprises a feeding device and a lifting machine, the feeding device is configured to input material to the conveying device, the conveying device is arranged between the feeding device and the lifting machine so as to convey the material input by the feeding device to the lifting machine, and the control device is configured to control the starting and stopping of the feeding device and/or the conveying device according to the distribution condition of the material detected by the first detection assembly.

In some embodiments of the present invention, in some embodiments,

The first detection assembly comprises a first sensor and a second sensor which are installed at the first end of the conveying device and a third sensor which is installed at the second end of the conveying device, and the first sensor, the second sensor and the third sensor are configured to detect whether materials exist at the positions of the first sensor, the second sensor and the third sensor;

The first sensor and the second sensor are arranged between the discharge hole of the feeding device and the conveying surface of the conveying device, and the distance between the second sensor and the conveying surface of the conveying device and the distance between the third sensor and the conveying surface of the conveying device are larger than the distance between the first sensor and the conveying surface of the conveying device.

In some embodiments, the control device is configured to:

under the condition that the first sensor and the second sensor detect that no material exists at the position of the first sensor and the second sensor, the feeding device is started and the conveying device is stopped; and/or

Under the condition that the first sensor and the second sensor detect that the material exists at the position of the first sensor and the second sensor, stopping the feeding device and starting the conveying device; and/or

Stopping the conveying device under the condition that the third sensor detects that the material exists at the position of the third sensor; and/or

And stopping the feeding device and the conveying device under the condition that the second sensor and the third sensor detect that the material exists at the position.

In some embodiments, the first detection assembly includes a fourth sensor configured to detect whether there is material at the connection of the elevator and the conveyor, and the control device is configured to shut down the conveyor if the fourth sensor detects the presence of material.

Based on the technical scheme, the distribution condition of the materials on the conveying surface of the conveying device is detected through the first detection component, the real-time position and the quantity of the materials can be obtained, an operator can monitor the material conveying, whether the working state of the first detection component is abnormal or not can be judged by the control device according to the detection result of the second detection component by further arranging the second detection component and the control device, namely, the function of checking the first detection component is realized, so that the working state of the first detection component is abnormal in time, related maintenance work is carried out, on one hand, the frequency of checking the first detection component from the operator to a production site can be greatly reduced, and on the other hand, the influence on the normal flow of the material conveying caused by the fact that the working state of the first detection component is abnormal but difficult to be found can be avoided, and the efficiency and the stability of the material conveying can be ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 shows a schematic view of the structure of one embodiment of the feeding apparatus of the present utility model;

in the figure:

10. a conveying device; 20. a first detection assembly; 21. a first sensor; 22. a second sensor; 23. a third sensor; 24. a fourth sensor; 30. a second detection assembly; 31. a first detector; 32. a second detector; 40. a feeding device; 50. a hoist; 60. a housing.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

In the production and processing process of tobacco, the stability of the material conveyed by the feeding equipment influences the quality of the subsequent tobacco shred production, so that the improvement of the stability of the material conveying has important significance for guaranteeing the quality of the tobacco shred production.

Referring to FIG. 1, in some embodiments of the present utility model, a feeding apparatus is provided, comprising a conveyor 10, a first sensing assembly 20, a second sensing assembly 30, and a control device, the conveyor 10 being configured to convey a material; the first detection assembly 20 is configured to detect a distribution of material on a conveying surface of the conveying device 10; the second detection assembly 30 is configured to detect whether material is present on the conveyor 10; the control device is in signal connection with the first detection assembly 20 and the second detection assembly 30, and is configured to determine whether the working state of the first detection assembly 20 is abnormal according to the detection result of the second detection assembly 30.

The distribution condition of the materials on the conveying surface of the conveying device 10 is detected through the first detecting component 20, the real-time positions and the quantity of the materials can be obtained, an operator can monitor the conveying of the materials, and further relevant parameters (such as the speed of the conveying device 10, the conveying flow rate of the materials and the like) of the conveying process of the materials are timely adjusted, so that the conveying stability of the materials is guaranteed.

In actual production, if the working state of the first detecting assembly 20 is abnormal, the situation of blocking, accumulation and the like on the conveying device 10 is easy to occur, and even the production line is likely to stop when serious.

Therefore, further, by setting the second detecting component 30 and the control device, the control device can determine whether the working state of the first detecting component 20 is abnormal according to the detecting result of the second detecting component 30, that is, the function of checking the first detecting component 20 is realized, so that the working state of the first detecting component 20 is abnormal in time, and relevant maintenance work is performed, on one hand, the frequency of checking the first detecting component 20 from an operator to a production site can be greatly reduced, and on the other hand, the normal flow of material conveying, which is influenced by the abnormal working state of the first detecting component 20, can be avoided, and further the efficiency and stability of material conveying are improved.

In some embodiments, the first detection assembly 20 includes a plurality of sensors configured to detect whether there is material at a predetermined location on the conveyor 10 to obtain a distribution of material on the conveying surface of the conveyor 10 from the detection results of the plurality of sensors.

By arranging a plurality of sensors, whether materials exist at a plurality of preset positions on the conveying device 10 can be detected, and the number and the specific positions of the preset positions can be determined according to actual production requirements, so long as parameters such as the positions and the number of the materials can be reflected. For example, by providing sensors at different heights from the conveying surface of the conveying apparatus 10, it is possible to obtain whether the sensors are located at a height to know the thickness of the material deposited on the conveying apparatus 10 and thus the approximate amount of material.

In some embodiments, the control device is configured to determine that the operational status of the first detection assembly 20 is abnormal if the second detection assembly 30 detects no material on the conveyor 10 and the at least one sensor detects material.

In the above embodiment, the first detecting component 20 is used for detecting whether the material is accumulated at the installation position, and the second detecting component 30 can determine whether the material is in the conveying surface range of the conveying device 10, if the second detecting component 30 does not detect the material, it is indicated that no material is present at any position on the conveying device 10, and therefore, if any sensor of the first detecting component 20 detects the material, it is indicated that the sensor works abnormally.

To further ensure the accuracy of the verification of the first detection assembly 20 by the second detection assembly 30, the frequency of routine service and maintenance of the second detection assembly 30 may be suitably increased.

The type of the sensor is selected from a plurality of types, and the number and arrangement positions of the sensors can be set according to the specific structure of the feeding equipment.

In some embodiments, the sensor comprises a correlation photosensor.

The specific structure of the second detecting assembly 30 is also selected in various ways, so as to detect the conveying surface range of the conveying device 10

In some embodiments, the second detection assembly 30 includes a first detector 31 disposed at a first end of the conveyor 10, the first detector 31 being configured to detect at least the presence of material from its location to a second end of the conveyor 10.

By providing the first detector 31 at the first end of the conveyor 10, a larger detection range can be obtained. For example, in some embodiments, the first detector 31 comprises a diffuse reflective photoelectric sensor, and by adjusting the mounting orientation of its detection head, detection of the spatial extent of its detection head to the second end of the conveyor 10 can be achieved.

In some embodiments, the second detection assembly 30 further includes a second detector 32 disposed at the second end of the conveyor 10, the second detector 32 being configured to detect at least the presence of material from its location to the first end of the conveyor 10, and the second detector 32 being at a different height from the conveying surface of the conveyor 10 than the mounting location of the first detector 31.

By providing the second detector 32, the detection range of the second detection assembly 30 can be further enlarged, and at least the spatial range between the first end and the second end of the conveying device 10 can be ensured to be detected.

In some embodiments, the second detector 32 comprises a diffuse reflective photosensor.

In practical application, the mounting positions of the first detector 31 and the second detector 32 can be adjusted according to the structure of the practical production line, so that the first detector 31 and the second detector 32 have overlapping detection ranges, mutual verification is realized, the detection dead angle of the other detector can be covered, and whether the second detection assembly 30 has materials on the conveying device 10 or not is ensured to be accurate enough.

For example, referring to fig. 1, in some embodiments, the first detector 31 is disposed on the conveying surface of the conveying device 10, the second detector 32 is disposed above the conveying surface of the conveying device 10, and the distance between the second detector 32 and the conveying surface of the conveying device 10 can be adjusted according to actual requirements.

In some embodiments, the feeding apparatus further comprises an alarm device in signal connection with the control device, the alarm device being configured to issue an alarm signal in case the control device determines that the operational state of the first detection assembly 20 is abnormal.

Through setting up alarm device, can remind operating personnel that the operating condition of first detection subassembly 20 is unusual when unusual emergence to operating personnel in time overhauls and maintains first detection subassembly 20, avoids influencing the normal conveying process of material, guarantees holistic work efficiency of feeding equipment.

In practice, the feeding device is usually co-produced with other different devices in the tobacco production line, and in some embodiments, the feeding device further comprises a feeding device 40 and a lifting machine 50, the feeding device 40 is configured to feed material to the conveying device 10, the conveying device 10 is arranged between the feeding device 40 and the lifting machine 50 to convey the material fed by the feeding device 40 to the lifting machine 50, and the control device is configured to control the start and stop of the feeding device 40 and/or the conveying device 10 according to the distribution of the material detected by the first detection assembly 20.

In the above embodiment, the control device controls the start and stop of the feeding device 40 and/or the conveying device 10 according to the distribution condition of the material detected by the first detecting assembly 20, so as to ensure the stability of the overall operation of the feeding device. For example, after a certain amount of materials are accumulated on the conveying device 10, the feeding device 40 is stopped, so that the conditions of material blockage, overflow and the like of the conveying device 10 can be effectively avoided, or the conveying device 10 is stopped and the feeding device 40 is kept running under the condition that the amount of materials on the conveying device 10 is small, so that the materials are supplemented to the conveying device 10, the flow of the materials conveyed to the lifting machine 50 is stable, and the stable running of the whole production line is ensured.

In some embodiments, the first detection assembly 20 includes a first sensor 21 and a second sensor 22 mounted to a first end of the conveyor 10 and a third sensor 23 mounted to a second end of the conveyor 10, the first sensor 21, the second sensor 22, and the third sensor 23 being configured to detect whether there is material at their locations; wherein the first sensor 21 and the second sensor 22 are both arranged between the discharge opening of the feeding device 40 and the conveying surface of the conveying device 10, and the distance between the second sensor 22 and the conveying surface of the conveyed device 10, and the distance between the third sensor 23 and the conveying surface of the conveyed device 10 are both larger than the distance between the first sensor 21 and the conveying surface of the conveying device 10.

By arranging the first sensor 21, the second sensor 22 and the third sensor 23 as described above, it is possible to detect whether there is material at different positions on the conveying surface of the conveying apparatus 10 so as to grasp the stage of conveying the material, specifically, by comparing the detection results of the first sensor 21 and the second sensor 22, it is possible to know the accumulation thickness of the material at the first end of the conveying apparatus 10, by comparing the detection results of the first sensor 21 and the third sensor 23, the second sensor 22 and the third sensor 23, it is possible to know the approximate position of the material on the conveying apparatus 10 between the first end and the second end, and by comprehensively comparing and analyzing the detection results of the first sensor 21, the second sensor 22 and the third sensor 23, it is possible to know the distribution situation of the material on the conveying surface of the conveying apparatus 10.

Wherein the first sensor 21 is arranged closer to the conveying surface of the conveying device 10, it is ensured that the position information of the material can be obtained even in case of little material on the conveying device 10.

For example, referring to fig. 1, in some embodiments, the first sensor 21 is disposed on a conveying surface of the conveying device 10.

In other embodiments, the number and placement of the sensors included in the first sensing assembly 20 may be adjusted based on the speed of conveyance, the size of the range of conveyance, etc. of the conveyor 10 to achieve a sufficiently comprehensive and accurate distribution of material on the conveying surface of the conveyor 10.

Specifically, in some embodiments, the control device is configured to activate the feeding device 40 and deactivate the feeding device 10, i.e. the first end of the feeding device 10 has a small amount of material, in case the first sensor 21 and the second sensor 22 each detect that there is no material at their location, so that the feeding device 40 can be activated to replenish the feeding device 10 with material.

In other embodiments, the control means is configured to deactivate the feeding device 40 and activate the conveying means 10 in case both the first sensor 21 and the second sensor 22 detect material at their positions, i.e. the amount of material at the first end of the conveying means 10 has accumulated to a certain amount, so that the conveying means 10 can be activated to convey material downstream, avoiding accumulation of material at the first end of the conveying means 10.

In other embodiments, the control device is configured to stop the conveyor 10 in case the third sensor 23 detects that there is material at its location, i.e. that the material at the second end of the conveyor 10 has accumulated more, thus suspending the conveyor 10 from accumulating at the second end of the conveyor 10.

In some embodiments, the control device is configured to stop the feeding device 40 and the conveying device 10, i.e. the first end and the second end of the conveying device 10 are full of material, in case the second sensor 22 and the third sensor 23 each detect that there is material at their location, at which time the conveying of material may be suspended in preparation for the next production cycle.

In some embodiments, the feeding apparatus further includes a housing 60, the housing 60 being disposed around the outer circumference of the conveyor 10.

By arranging the housing 60, a space for buffering materials can be formed between the inner wall of the housing 60 and the conveying surface of the conveying device 10, so that the quantity of materials buffered on the conveying device 10 is increased, and the operation stability and continuity of the production line can be improved.

In the production application, due to the limitation of the integral structure of the production line, the connection between the lifter 50 and the conveying device 10 may have an uneven connection structure, for example, the inlet of the lifter 50 is generally bent upwards, so that blocking and accumulation phenomena easily occur, and the conveying efficiency of materials is affected.

Thus, referring to fig. 1, in some embodiments, the first detection assembly 20 includes a fourth sensor 24, the fourth sensor 24 being configured to detect whether there is material at the connection of the elevator 50 to the conveyor 10, and the control device being configured to deactivate the conveyor 10 if the fourth sensor 24 detects material.

That is, in the case where the fourth sensor 24 is configured to detect material at the junction of the elevator 50 and the conveyor 10, the junction may be subject to material accumulation, which may be cleared by an operator during a shutdown of the conveyor 10 to restore normal production flow.

One specific embodiment of the feeding apparatus of the present utility model is described below:

Referring to fig. 1, the feeding apparatus of the present utility model includes a conveying device 10, a first detecting assembly 20, a second detecting assembly 30, a feeding device 40, a lifter 50, a housing 60, and a control device.

The feeding device 40 is configured to feed the material to the feeding device 10, the feeding device 10 is disposed between the feeding device 40 and the elevator 50 to feed the material fed by the feeding device 40 to the elevator 50, and the housing 60 is covered on the outer circumference of the feeding device 10 such that a space for buffering the material is formed between the inner wall of the housing 60 and the conveying surface of the feeding device 10.

The first detection assembly 20 is configured to detect the distribution of the material on the conveying surface of the conveying device 10, in this embodiment, the first detection assembly 20 includes a first sensor 21 and a second sensor 22 mounted at a first end of the conveying device 10, and a third sensor 23 mounted at a second end of the conveying device 10, the first sensor 21 and the second sensor 22 are both disposed between the discharge port of the feeding device 40 and the conveying surface of the conveying device 10, the first detection assembly 20 further includes a fourth sensor 24 for detecting whether there is a material at the connection between the elevator 50 and the conveying device 10, and the first sensor 21, the second sensor 22, the third sensor 23, and the fourth sensor 24 are all correlation photocells.

The second detection assembly 30 is configured to detect whether there is material on the conveyor 10. In this embodiment, the second detection assembly 30 includes a first detector 31 mounted on a conveying surface of the conveyor 10 and a second detector 32 mounted on the housing 60, the second detector 32 being spaced apart from the conveying surface of the conveyor 10, the first detector 31 and the second detector 32 being diffuse reflective photocells.

The control device is configured to control the start and stop of the feeding device 40 and/or the conveying device 10 according to the distribution condition of the materials detected by the first detection assembly 20, and is in signal connection with the first detection assembly 20 and the second detection assembly 30, and the control device is configured to determine whether the working state of the first detection assembly 20 is abnormal according to the detection result of the second detection assembly 30.

The operation process of the feeding equipment is as follows:

after the operator initiates the discharge (i.e. the feeding device 40 starts feeding the conveyor 10),

The first step is that the material is fed to the first end of the conveyor 10 by means of the feeding device 40, and the conveyor 10 is deactivated after the material has been detected by the first sensor 21; when the accumulation of material reaches a level, which is detected by the second sensor 22, the feeding device 40 will stop feeding material, and the conveyor 10 will start feeding material forward, i.e. in the direction of the second end of the conveyor 10, close to the elevator 50.

In a second step, when neither the first sensor 21 nor the second sensor 22 detects material, the feeding device 40 continues to feed material, and the feeding device 10 stops running.

Third, the sequential operations of the first and second steps are cycled until the material reaches the second end of the conveyor 10, as detected by the third sensor 23, at which time the conveyor 10 stops; when the second sensor 22 also detects material, the feeding device 40 will stop feeding material, at which time the buffer space between the housing 60 and the conveyor 10 is filled and the next production can take place.

After production begins (i.e., the elevator 50 begins to lift material), when the fourth sensor 24 detects no material, the conveyor 10 advances the material to the elevator 50 for passing, and when the fourth sensor 24 detects material, the conveyor 10 stops advancing the material.

In the operation process of the novel feeding device, the second detecting component 30 is used for judging whether a material exists in the buffer space between the housing 60 and the conveying device 10, when the second detecting component 30 does not detect the material (i.e. the first detector 31 and the second detector 32 do not detect the material signal), the first detecting component 20 is started to perform self-detection (i.e. the first sensor 21, the second sensor 22, the third sensor 23 and the fourth sensor 24 are started to perform detection), and the self-detection result of the first detecting component 20 is judged through the control device.

Specifically, if the second detecting component 30 detects that no material exists in the buffer space between the housing 60 and the conveying device 10, the first sensor 21, the second sensor 22, the third sensor 23 and the fourth sensor 24 should all be in a state of not detecting the material, and if a certain sensor (opposite-emitting type photoelectric tube) is in a state of detecting the material, the abnormal working state of the opposite-emitting type photoelectric tube is indicated, and the control device triggers the alarm device to alarm and prohibits the feeding device from discharging, so that the condition of stopping and blocking the material is avoided.

By describing a plurality of embodiments of the feeding equipment, the feeding equipment can be seen to verify the first detection assembly by arranging the second detection assembly, so that the frequency of checking the first detection assembly from an operator to a production site can be greatly reduced, manpower resources can be effectively saved, the feeding equipment can be overhauled in time aiming at abnormal conditions, the influence on the normal flow of material conveying caused by the failure of the first detection assembly is reduced, the conditions of blocking, cutting off and the like of a conveying device caused by material passing under the abnormal condition of the working state of the first detection assembly are avoided, the material conveying efficiency and stability are further improved, and the product quality is guaranteed.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications and equivalents of the features disclosed herein may be made to the specific embodiments of the utility model or to parts of the features may be substituted without departing from the principles of the utility model, and such modifications and equivalents are intended to be encompassed within the scope of the utility model as claimed.

Claims (10)

1. A feeding apparatus, comprising:

a conveying device (10) for conveying a material;

-a first detection assembly (20) configured to detect a distribution of the material on a conveying surface of the conveying device (10);

-a second detection assembly (30) configured to detect whether the material is present on the conveyor (10); and

The control device is in signal connection with the first detection component (20) and the second detection component (30), and is configured to judge whether the working state of the first detection component (20) is abnormal according to the detection result of the second detection component (30);

The first detection assembly (20) comprises a plurality of sensors, and the sensors are configured to detect whether materials exist at preset positions on the conveying device (10) or not so as to acquire the distribution condition of the materials on the conveying surface of the conveying device (10) through detection results of the plurality of sensors;

The control device is configured to determine that the working state of the first detection assembly (20) is abnormal when the second detection assembly (30) detects that no material exists on the conveying device (10) and at least one sensor detects that the material exists.

2. Feeding apparatus according to claim 1, wherein the sensor comprises an opposite-emitting photoelectric sensor.

3. Feeding apparatus according to claim 1, wherein the second detection assembly (30) comprises a first detector (31) arranged at a first end of the conveyor (10), the first detector (31) being configured to detect at least whether there is material in a range from its location to a second end of the conveyor (10).

4. A feeding apparatus according to claim 3, wherein the second detection assembly (30) further comprises a second detector (32) arranged at the second end of the conveyor (10), the second detector (32) being configured to detect at least whether there is material in a range from its location to the first end of the conveyor (10), and the mounting position of the second detector (32) and the first detector (31) being at a different height from the conveying surface of the conveyor (10).

5. Feeding apparatus according to claim 4, wherein the first detector (31) and/or the second detector (32) comprises a diffuse reflective photoelectric sensor.

6. Feeding apparatus according to claim 1, further comprising an alarm device in signal connection with the control device, the alarm device being configured to issue an alarm signal in case the control device determines that the operational state of the first detection assembly (20) is abnormal.

7. Feeding apparatus according to claim 1, further comprising a feeding device (40) and a lifting machine (50), the feeding device (40) being configured to feed material to the conveying device (10), the conveying device (10) being arranged between the feeding device (40) and the lifting machine (50) for conveying the material fed by the feeding device (40) to the lifting machine (50), the control device being configured to control the start and stop of the feeding device (40) and/or the conveying device (10) depending on the distribution of the material detected by the first detection assembly (20).

8. The feeding apparatus according to claim 7, wherein,

The first detection assembly (20) comprises a first sensor (21) and a second sensor (22) mounted at a first end of the conveying device (10) and a third sensor (23) mounted at a second end of the conveying device (10), wherein the first sensor (21), the second sensor (22) and the third sensor (23) are configured to detect whether materials exist at the positions of the first sensor, the second sensor and the third sensor;

Wherein, first sensor (21) with second sensor (22) all set up in between the discharge gate of feedway (40) with the conveying surface of conveyor (10), just distance between second sensor (22) and the conveying surface of conveyor (10), distance between third sensor (23) and the conveying surface of conveyor (10) are all greater than distance between first sensor (21) and the conveying surface of conveyor (10).

9. Feeding apparatus according to claim 8, wherein the control means is configured to:

-activating the feeding device (40) and stopping the conveying device (10) in case the first sensor (21) and the second sensor (22) detect that there is no material at the location; and/or

-Stopping the feeding device (40) and starting the conveying device (10) in case both the first sensor (21) and the second sensor (22) detect the presence of material at their location; and/or

-Stopping the conveyor (10) in case the third sensor (23) detects a material at its location; and/or

And stopping the feeding device (40) and the conveying device (10) under the condition that the second sensor (22) and the third sensor (23) detect that materials exist at the positions of the feeding device and the conveying device.

10. Feeding apparatus according to claim 7, wherein the first detection assembly (20) comprises a fourth sensor (24), the fourth sensor (24) being configured to detect whether there is material at the connection of the elevator (50) with the conveying device (10), the control device being configured to stop the conveying device (10) in case the fourth sensor (24) detects material.