CN105444819B - Material flow detection system, method and device of chute and machine-made sand equipment - Google Patents
Material flow detection system, method and device of chute and machine-made sand equipment Download PDFInfo
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- CN105444819B CN105444819B CN201410383546.XA CN201410383546A CN105444819B CN 105444819 B CN105444819 B CN 105444819B CN 201410383546 A CN201410383546 A CN 201410383546A CN 105444819 B CN105444819 B CN 105444819B
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- 239000000463 material Substances 0.000 title claims abstract description 235
- 238000001514 detection method Methods 0.000 title claims abstract description 95
- 239000004576 sand Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 230000000903 blocking effect Effects 0.000 claims description 15
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- 238000010586 diagram Methods 0.000 description 9
- 239000004575 stone Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
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Abstract
The invention relates to the technical field of machine-made sand, and discloses a material flow detection system, method and device of a chute and machine-made sand equipment. The material flow detection system of the chute comprises: the roller is arranged in the chute and provided with a rotating shaft, and the roller can roll around the rotating shaft along with the material flow in the chute; the pressure detection device is used for detecting the pressure of the material flow in the chute on the roller; the speed detection device is used for detecting the rolling speed of the roller along with the material flow in the chute; and the control device is in signal connection with the pressure detection device and the speed detection device and is used for determining and outputting a material flow state signal according to the pressure and the speed. Compared with the prior art, the material flow condition in the chute can be timely known by operators, corresponding measures are taken according to the material flow condition, and the damage to equipment caused by long-time material blockage is avoided.
Description
Technical Field
The invention relates to the technical field of machine-made sand, in particular to a material flow detection system, a material flow detection method and a material flow detection device for a chute and machine-made sand equipment.
Background
In the sand making production line, the stone material is primarily crushed by a coarse crusher to generate coarse material, the coarse material is conveyed to a fine crusher by a belt conveyor to be further finely crushed, the finely crushed stone material enters a vibrating screen to be screened out of stones, the stones meeting the feeding granularity of the sand making machine enter the sand making machine to make sand, and the stones not meeting the feeding granularity of the sand making machine return to the fine crusher to be further finely crushed.
In a sand production line, based on the requirements of process and environmental protection, for example, in order to prevent air pollution caused by sand dust in sand, a closed chute is generally adopted among crushing devices as a sand flow channel. However, such closed chutes have many disadvantages in transporting sand, the greatest of which is the tendency for material blockage. Because the chute is inclosed, operating personnel often can not in time learn the condition of the inside grit material stream of chute, in case the circulation of material stream is not smooth then can cause long-pending material, and then make the chute take place the putty, if the chute takes place the putty time longer also can cause certain destruction to the communicating equipment of this section chute, seriously influence the engineering progress.
Disclosure of Invention
The embodiment of the invention provides a material flow detection system, a material flow detection method and a material flow detection device for a chute and machine-made sand equipment, which are used for acquiring the material flow condition in the chute in real time and effectively avoiding the occurrence of long-time material blockage.
The embodiment of the invention firstly provides a material flow detection system of a chute, which comprises:
the roller is arranged in the chute and provided with a rotating shaft, and the roller can roll around the rotating shaft along with the material flow in the chute;
the pressure detection device is used for detecting the pressure of the material flow in the chute on the roller;
the speed detection device is used for detecting the rolling speed of the roller along with the material flow in the chute;
and the control device is in signal connection with the pressure detection device and the speed detection device and is used for determining and outputting a material flow state signal according to the pressure and the speed.
According to the technical scheme, the material flow detection device for detecting the material flow state in the chute is designed, the roller is arranged in the chute and can roll along with the material flow in the chute, so that the material flow state in the chute can be determined by detecting the rolling speed of the roller and the impact force of the material flow on the roller, an operator can timely know the material flow condition in the chute, corresponding measures are taken according to the material flow condition, and the damage to equipment caused by long-time material blockage is avoided.
Preferably, the detection system further comprises:
and the human-computer interaction device is in signal connection with the control device and is used for displaying the material flow state information according to the material flow state signal.
The man-machine interaction device can output a corresponding material flow state according to the material flow state judged by the control device, the man-machine interaction device can be used for displaying the material flow state information and also can give an alarm according to abnormal material flow state signals, such as chute blockage state signals, and after an operator sees the chute blockage information or hears the alarm, corresponding measures can be taken to avoid long-time material blockage, such as stopping the machine to clean the chute.
Depending on the state of the flow, several embodiments can be included:
one embodiment mode is as follows: the material flow state comprises a chute blockage state, and the control device is specifically used for outputting a chute blockage state signal when the pressure is greater than zero and the speed is equal to zero.
The device is easy to damage due to material blockage in the closed chute, so that the material flow state can be a chute material blockage state, and the material blockage is caused in the chute when the roller is stressed but does not roll along with the material flow. And an operator can take corresponding measures according to the chute blockage signal, such as stopping the machine to clean the chute section.
The other implementation mode is as follows: the material flow state comprises a chute pre-blocking state, and the control device is further specifically used for outputting a chute pre-blocking state signal when R → 0 is satisfied, wherein R is the speed detected by the speed detection device.
In order to prevent chute blockage, when the material flow in the chute has the blockage tendency, chute pre-blockage signals are output, and an operator can adopt corresponding measures according to the chute pre-blockage signals to prevent chute blockage, for example, the flow speed of the material flow in the chute is reduced. The chute pre-blocking signal output by the control device can also display chute pre-blocking information through the human-computer interaction device.
Yet another embodiment is: the flow conditions include a flow normal condition, and the control device is further specifically configured to output a flow normal condition signal when the pressure is greater than zero and the velocity is greater than zero.
When the pressure is larger than zero and the speed is larger than zero, the roller can rotate and is subjected to the pressure of the material flow, the material flow in the chute is in a normal conveying state, and a material flow normal state signal is output.
Preferably, when the control means outputs a stream normality signal, the control means is further adapted to determine the flow rate of the stream based on the velocity and the pressure, and output a flow rate signal for the stream.
The control means may determine the flow rate of the stream based on the velocity and pressure when the stream is in a normal state. The output flow signal of the material flow, and the man-machine interaction device displays the flow of the material flow.
The arrangement of the rollers in the chute is various, and preferably, the bottom plate of the chute is provided with an opening, and the rollers are embedded into the opening. The roller is embedded into the chute bottom plate and arranged in the chute relative to the roller, so that the resistance of the roller to material flow can be reduced, the material flow smoothly flows, and in addition, negative pressure is generally adopted in the closed chute, so that sand and dust are not easy to leak.
In order to improve the accuracy of detecting the pressure of the material flow to which the roller is subjected, it is preferable that the length of the roller is not less than two thirds of the width of the chute.
The embodiment of the invention also provides machine-made sand equipment comprising the material flow detection system of any one of the chutes. Due to the adoption of the material flow detection system of the chute in the sand making equipment, the material flow condition in the chute can be known in time, and the damage of the sand making equipment caused by long-time material blockage is prevented.
The embodiment of the invention also provides a material flow detection method of the chute using the detection system, which comprises the following steps:
receiving the pressure of the material flow in the chute on the roller and the rolling speed of the roller along with the material flow in the chute;
and determining and outputting a material flow state signal according to the pressure and the speed.
According to the different material flow states, the following three embodiments are divided:
one embodiment is: the material flow state comprises a chute blockage state, and when the pressure is greater than zero and the speed is equal to zero, a chute blockage state signal is output.
The other implementation mode is as follows: the material flow state comprises a chute pre-blocking state, and a chute pre-blocking state signal is output when R → 0 is satisfied, wherein R is the speed detected by the speed detection device.
Yet another embodiment is: the material flow state comprises a material flow normal state, and when the pressure is greater than zero and the speed is greater than zero, a material flow normal state signal is output.
Preferably, when the output stream normal condition signal is present, the detection method further comprises determining the flow rate of the stream based on the velocity and the pressure, and outputting the flow rate signal of the stream.
Based on the same inventive concept, the embodiment of the present invention further provides a material flow detection device for a chute, including:
the receiving module is used for receiving the pressure of the material flow in the chute on the roller and the rolling speed of the roller along with the material flow in the chute;
and the output module is used for determining and outputting a material flow state signal according to the pressure and the speed.
According to the different material flow states, the following three embodiments are divided:
one embodiment is: the material flow state comprises a chute blockage state, and the output module is specifically used for outputting a chute blockage signal when the pressure is greater than zero and the speed is equal to zero.
The other implementation mode is as follows: the material flow state comprises a chute pre-plugging state, and the output module is further specifically configured to output a chute pre-plugging signal when R → 0 is satisfied.
Yet another embodiment is: the material flow state comprises a material flow normal state, and the output module is further specifically used for outputting a material flow normal state signal when the pressure is greater than zero and the speed is greater than zero.
When the output module outputs the material flow normal state signal, the output module is also used for determining the flow rate of the material flow according to the speed and the pressure and outputting the flow rate signal of the material flow.
Drawings
Fig. 1 is a schematic structural diagram of a material flow detection system of a chute according to a first embodiment of the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view of a first embodiment of the invention, a roller-mounted chute, in the direction of flow of the material stream;
fig. 3 is a schematic structural diagram of a material flow detection system of a chute provided in a second embodiment of the invention;
FIG. 4 is a schematic flow diagram of a method for detecting material flow in a chute according to an embodiment of the invention;
FIG. 5 is a schematic flow diagram of a method for detecting material flow through a chute according to another embodiment of the invention;
fig. 6 is a schematic flow chart of a material flow detection method of a chute according to another embodiment of the invention;
fig. 7 is a schematic structural diagram of a material flow detection device of a chute according to an embodiment of the present invention.
Reference numerals:
1-chute 2-roller 3-pressure detection device
4-speed detection device 5-control device 6-man-machine interaction device
21-rotating shaft 51-receiving module 52-output module
Detailed Description
In order to avoid the damage of equipment caused by long-time material blockage, the embodiment of the invention provides a material flow detection system, a material flow detection method and a material flow detection device for a chute and machine-made sand equipment. In this technical scheme, set up the gyro wheel in the chute, the gyro wheel can roll along with the material stream in the chute, can confirm the material stream state in the chute through the impact force of the material stream that detects the roll speed of gyro wheel and gyro wheel received, and operating personnel can in time learn the material stream condition in the chute, takes corresponding measure according to the material stream condition, avoids long-time putty to cause the destruction of equipment. The present invention will be described in detail below with reference to specific embodiments and with reference to the attached drawings.
An embodiment of the present invention first provides a material flow detection system for a chute, as shown in fig. 1, fig. 1 is a schematic structural diagram of the material flow detection system for a chute provided in the first embodiment of the present invention, and the detection system includes:
a roller 2 with a rotating shaft 21 and arranged in the chute 1, wherein the roller 2 can roll around the rotating shaft 21 along with the material flow in the chute 1;
the pressure detection device 3 is used for detecting the pressure of the material flow in the chute to which the roller is subjected;
the speed detection device 4 is used for detecting the rolling speed of the roller along with the material flow in the chute;
and the control device 5 is in signal connection with the pressure detection device 3 and the speed detection device 4 and is used for determining and outputting a material flow state signal according to the pressure and the speed.
In the technical scheme of the invention, the material flow detection device for detecting the material flow state in the chute is designed, the roller 2 is arranged in the chute 1, the roller 2 can roll along with the material flow in the chute 1, the material flow state in the chute can be determined by detecting the rolling speed of the roller 2 and the impact force of the material flow on the roller 2, an operator can know the material flow condition in the chute in time, and corresponding measures are taken according to the material flow condition to avoid the damage of equipment caused by long-time material blockage.
In this embodiment, the rollers 2 may be disposed at any location within the chute 1, such as at the entrance; the shaft 12 of the roller 2 can penetrate through the side wall of the chute 1 to realize that the roller 2 rolls along with the material flow.
In this embodiment, in order to more accurately detect the stress condition of the roller 2, it is preferable to use two pressure detection devices 3, the two pressure detection devices 3 are respectively disposed at two ends of the rotating shaft 21, and the pressure applied to the roller 2 may be an average value of two pressures detected by the two pressure detection devices 3 respectively.
In this embodiment, the control device 5 is configured to determine and output the material flow state signal according to the pressure and the speed, and specifically, may store a corresponding relationship between the pressure and the speed and the material flow state in the control device 5, so that the control device 5 may determine the corresponding material flow state according to the received pressure and speed and output the corresponding material flow state signal. The material flow state can be various, such as a normal material flow state, a chute blockage state, a chute pre-blockage state and the like.
As shown in fig. 2, fig. 2 is a schematic longitudinal sectional structure of the chute provided with the rollers according to the first embodiment of the present invention along the flowing direction of the material flow, the arrangement position of the rollers 2 on the chute 1 is not limited, and the arrangement mode in fig. 2 is preferably adopted, namely, the rollers 2 are embedded into the bottom plate of the chute 1.
As shown in fig. 3, fig. 3 is a schematic structural diagram of a material flow detection system of a chute according to a second embodiment of the present invention, and preferably, the detection system further includes, on the basis of the first embodiment:
and the human-computer interaction device 6 is in signal connection with the control device 5 and is used for displaying the material flow state information according to the material flow state signal.
The man-machine interaction device 6 can output a corresponding material flow state according to the material flow state judged by the control device 5, the man-machine interaction device 6 can be used for displaying the material flow state information and also can give an alarm according to abnormal material flow state signals, such as chute blockage state signals, and after an operator sees the chute blockage information or hears the alarm, corresponding measures can be taken to avoid long-time material blockage, such as stopping to clean the chute.
Depending on the state of the flow, several embodiments can be included:
one embodiment mode is as follows: with continued reference to fig. 1 or fig. 3, preferably, the material flow state includes a chute blockage state, and the control device 5 is specifically configured to output a chute blockage state signal when the pressure is greater than zero and the speed is equal to zero.
The device is easy to damage due to material blockage in the closed chute, so that the material flow state can be a chute material blockage state, and the material blockage is caused in the chute when the roller is stressed but does not roll along with the material flow. And an operator can take corresponding measures according to the chute blockage signal, such as stopping the machine to clean the chute section.
The other implementation mode is as follows: the material flow state comprises a chute pre-blocking state, and the control device 5 is further specifically configured to output a chute pre-blocking signal when R → 0 is satisfied, where R is the speed detected by the speed detection device.
In order to prevent chute blockage, when the material flow in the chute 1 has the blockage tendency, namely the speed detected by the speed detection device approaches to zero, a chute pre-blockage signal is output, and an operator can adopt corresponding measures according to the chute pre-blockage signal to prevent chute blockage, for example, the flow speed of the material flow in the chute is reduced. The chute pre-blocking signal output by the control device 5 can also display chute pre-blocking information through the human-computer interaction device 6. The algorithm for the speed approaching zero may be determined by using an algorithm that is conventional in the art, for example, the speed detection device detects the speed along with the change of time, the speed detected three times is less than the set speed value, the speed detected the fourth time is still less than the set speed value and is still less than the set speed value, which indicates that the speed approaches zero, wherein the set speed value is a number close to zero, for example, 0.05m/s, and the present invention does not limit the number.
Yet another embodiment is: with continued reference to fig. 1 or fig. 3, preferably, the flow condition includes a normal flow condition, and the control device 5 is further configured to output a normal flow condition signal when the pressure is greater than zero and the speed is greater than zero.
When the pressure is greater than zero and the speed is greater than zero, the roller 2 can rotate and is subjected to the pressure of the material flow, the material flow in the chute 1 is in a normal conveying state, and the control device 5 outputs a material flow normal state signal.
When the material flow is normal, the control device 5 is also used for determining the flow rate of the material flow according to the speed and the pressure and outputting a flow rate signal of the material flow. In this technical solution, the flow rate of the material flow may be calculated according to the correspondence between the speed and the pressure and the flow rate of the material flow, or the flow rate of the material flow may be read according to the form of a correspondence list between the speed and the pressure and the flow rate of the material flow, and the present invention does not limit these specific forms. The flow signal of the material flow output by the control device 5 can also display the flow of the material flow through the man-machine interaction device 6.
There are various ways in which the rollers may be arranged in the chute, and preferably, with continued reference to figures 1 and 2, the floor of the chute 1 has an opening into which the roller 2 fits. Adopt on gyro wheel 2 imbeds the chute 1 bottom plate, gyro wheel 2 sets up inside chute 1, can reduce the resistance of gyro wheel 2 to the material stream for the material stream smoothly flows, in addition, generally is the negative pressure in the inclosed chute 1, so sand and dust is also difficult for revealing.
In order to improve the accuracy of the detection of the pressure of the material flow on the rollers, it is preferred that the length of the rollers 2 is not less than two thirds of the width of the chute 1, as shown with continued reference to fig. 1. When the length of the roller 2 is not less than two thirds of the width of the chute 1, the rolling speed of the roller 2 along with the material flow and the impact force of the roller 2 on the material flow can more accurately represent the state of the material flow, and therefore, the detection precision can be improved.
In any of the above-mentioned chute material flow detection systems, the control device may be further configured to determine that there is no material flow in the chute when the pressure is equal to zero and the speed is equal to zero, and output a signal that there is no material flow in the chute.
The embodiment of the invention also provides machine-made sand equipment comprising the material flow detection system of any one of the chutes. Due to the adoption of the material flow detection system of the chute in the sand making equipment, the material flow condition in the chute can be known in time, and the damage of the sand making equipment caused by long-time material blockage is prevented.
The embodiment of the present invention further provides a method for detecting a material flow of a chute using the above detection system, as shown in fig. 4, fig. 4 is a schematic flow diagram of the method for detecting a material flow of a chute according to an embodiment of the present invention, where the method for detecting a material flow of a chute includes:
step 101, receiving the pressure of the material flow in the chute to which the roller is subjected, and the speed of the roller rolling along with the material flow in the chute;
and step 102, determining and outputting a material flow state signal according to the pressure and the speed.
In the detection method, the material flow condition in the closed chute can be detected in real time, so that an operator can timely know whether the chute is blocked or not, and the operator can take corresponding measures once the chute is blocked, thereby preventing the equipment from being damaged by long-time material blocking.
The detection method of the present invention is described by taking the material flow state as the chute blockage state according to different material flow states, as shown in fig. 5, fig. 5 is a schematic flow chart of the material flow detection method of the chute according to another embodiment of the present invention, and the detection method includes:
step 201, receiving the pressure of the material flow in the chute to which the roller is subjected, and the speed of the roller rolling along with the material flow in the chute;
step 202, when the pressure is larger than zero and the speed is equal to zero;
and step 203, outputting chute blockage signals.
In the detection method, step 202 may be implemented by two determination steps, for example, first determining whether the pressure is greater than zero, and then determining whether the speed is equal to zero; or whether the speed is equal to zero or not can be judged first, and then whether the pressure is greater than zero or not can be judged, and the detection method is not limited to the method. For example, as shown in fig. 6, fig. 6 is a specific flow chart of a material flow detection method for a chute according to another embodiment of the present invention, the detection method includes:
301, receiving the pressure of the material flow in the chute on the roller and the rolling speed of the roller along with the material flow in the chute;
step 302, judging whether the pressure is greater than zero; if yes, go to step 303, otherwise, go back to step 301;
step 303, judging whether the speed is equal to zero or not; if so, go to step 304, otherwise, go back to step 301;
and step 304, outputting chute blockage signals.
The other implementation mode is as follows: the material flow state comprises a chute pre-blocking state, and a chute pre-blocking state signal is output when R → 0 is satisfied, wherein R is the speed detected by the speed detection device.
Yet another embodiment is: the material flow state comprises a material flow normal state, and when the pressure is greater than zero and the speed is greater than zero, a material flow normal state signal is output.
Preferably, when the output stream normal condition signal is present, the detection method further comprises determining the flow rate of the stream based on the velocity and the pressure, and outputting the flow rate signal of the stream.
In any of the above detection methods, the method may further include: when the pressure is equal to zero and the speed is equal to zero, determining that no material flow exists in the chute, and outputting a signal that no material flow exists in the chute.
When the detection method is specifically implemented in chute application, the detection method is already introduced in a material flow detection system of the chute, and details are not repeated here.
Based on the same inventive concept, an embodiment of the present invention further provides a material flow detection device for a chute, as shown in fig. 7, fig. 7 is a schematic structural diagram of the material flow detection device for a chute according to an embodiment of the present invention, and the detection device includes:
the receiving module 51 is used for receiving the pressure of the material flow in the chute on the roller and the rolling speed of the roller along with the material flow in the chute;
and the output module 52 is used for determining and outputting a material flow state signal according to the pressure and the speed.
According to the different material flow states, the following three embodiments are divided:
one embodiment is: the material flow state comprises a chute blockage state, and the output module 52 is specifically configured to output a chute blockage signal when the pressure is greater than zero and the speed is equal to zero.
The other implementation mode is as follows: the material flow conditions include a chute pre-plugging condition, and the output module 52 is further specifically configured to output a chute pre-plugging signal when R → 0 is satisfied.
Yet another embodiment is: the flow conditions include a flow normal condition, and the output module 52 is further configured to output a flow normal condition signal when the pressure is greater than zero and the velocity is greater than zero.
The output module 52 is also configured to determine a flow rate of the stream based on the velocity and the pressure when the output module outputs the stream normality signal, and output the flow rate signal for the stream.
In any of the above detection devices, the output module may be further configured to determine that there is no material flow within the chute and output a signal that there is no material flow within the chute when the pressure is equal to zero and the speed is equal to zero.
The material flow detection system, method and device of the chute can be used in the closed chute, and the material flow condition in the chute can be known by avoiding physical damage to the chute; the detection method can detect whether the material flow exists in the chute or whether the material flow is blocked or in a normal flowing state, so that the material flow can be detected in a dynamic or static state, and reaction parameters of the material flow state are rich and three-dimensional.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (15)
1. A system for detecting a flow of material through a chute, comprising:
the roller is arranged in the chute and provided with a rotating shaft, and the roller can roll around the rotating shaft along with the material flow in the chute;
the pressure detection device is used for detecting the pressure of the material flow in the chute on the roller;
the speed detection device is used for detecting the rolling speed of the roller along with the material flow in the chute;
the control device is in signal connection with the pressure detection device and the speed detection device and is used for determining and outputting a material flow state signal according to the pressure and the speed;
and the human-computer interaction device is in signal connection with the control device and is used for displaying the material flow state information according to the material flow state signal.
2. The detection system of claim 1, wherein the material flow condition comprises a chute blockage condition, and the control device is configured to output a chute blockage condition signal when the pressure is greater than zero and the velocity is equal to zero.
3. The detection system of claim 1, wherein the material flow condition comprises a chute pre-plugging condition, and the control device is further specifically configured to output a chute pre-plugging condition signal when R → 0 is satisfied, wherein R is the speed detected by the speed detection device.
4. The detection system of claim 1, wherein the flow condition comprises a flow normal condition, and the control device is further configured to output a flow normal condition signal when the pressure is greater than zero and the speed is greater than zero.
5. The detection system of claim 4, wherein the control device is further configured to determine a flow rate of the stream based on the velocity and the pressure when the control device outputs the stream normality signal, the flow rate signal for the stream being output.
6. The detection system of claim 1, wherein the floor of the chute has an opening, and the roller is inserted into the opening.
7. The detection system of claim 1, wherein the length of the roller is no less than two-thirds of the width of the chute.
8. A machine-made sand facility comprising a material flow detection system for a chute as claimed in any one of claims 1 to 7.
9. A method for detecting a material flow in a chute using the detection system according to claim 1, comprising:
receiving the pressure of the material flow in the chute on the roller and the rolling speed of the roller along with the material flow in the chute;
and determining and outputting a material flow state signal according to the pressure and the speed.
10. The method for detecting according to claim 9, wherein said material flow condition includes a chute blockage condition, and wherein a chute blockage condition signal is output when the pressure is greater than zero and the velocity is equal to zero.
11. The method of claim 9, wherein the material flow condition comprises a chute pre-plugging condition, and wherein a chute pre-plugging condition signal is output when R → 0 is satisfied, wherein R is the speed detected by the speed detection device.
12. The method of claim 9, wherein the flow condition comprises a flow normal condition, and wherein a flow normal condition signal is output when the pressure is greater than zero and the velocity is greater than zero.
13. The method of testing as defined in claim 12, wherein when outputting the stream normality signal, the method further comprises determining a flow rate of the stream based on the velocity and the pressure, outputting the flow rate signal of the stream.
14. A device for detecting a flow of material in a chute, comprising:
the receiving module is used for receiving the pressure of the material flow in the chute on the roller and the rolling speed of the roller along with the material flow in the chute;
the output module is used for determining and outputting a material flow state signal according to the pressure and the speed;
the material flow state comprises a chute blockage state, and the output module is specifically used for outputting a chute blockage state signal when the pressure is greater than zero and the speed is equal to zero; or,
the material flow state comprises a chute pre-blocking state, and the output module is further specifically used for outputting a chute pre-blocking state signal when R → 0 is satisfied, wherein R is the speed detected by the speed detection device; or,
the material flow state comprises a material flow normal state, and the output module is further specifically used for outputting a material flow normal state signal when the pressure is greater than zero and the speed is greater than zero.
15. The sensing device of claim 14, wherein the output module is further configured to determine a flow rate of the stream based on the velocity and the pressure when the output module outputs the stream health signal, the output module outputting the flow rate signal for the stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410383546.XA CN105444819B (en) | 2014-08-06 | 2014-08-06 | Material flow detection system, method and device of chute and machine-made sand equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410383546.XA CN105444819B (en) | 2014-08-06 | 2014-08-06 | Material flow detection system, method and device of chute and machine-made sand equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105444819A CN105444819A (en) | 2016-03-30 |
| CN105444819B true CN105444819B (en) | 2019-02-19 |
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| CN106938771A (en) * | 2017-04-12 | 2017-07-11 | 五冶集团上海有限公司 | A kind of travelling belt chute putty protection device |
| CN113252771A (en) * | 2021-06-03 | 2021-08-13 | 中冶北方（大连）工程技术有限公司 | Online detection device and method for FeO content of sinter with inclined sleeve structure |
| CN115359638B (en) * | 2022-08-26 | 2023-06-27 | 山东千颐科技有限公司 | Chute coal pile alarm device |
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