CN113955337A

CN113955337A - Intelligent blockage clearing and flow assisting system for silo

Info

Publication number: CN113955337A
Application number: CN202111305256.XA
Authority: CN
Inventors: 时成帅; 刘健
Original assignee: China Metallurgical Engineering Co ltd; Sinosteel Equipment and Engineering Co Ltd
Current assignee: China Metallurgical Engineering Co ltd; Sinosteel Equipment and Engineering Co Ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-01-21

Abstract

The invention discloses an intelligent blockage-removing and flow-assisting system for a silo, which comprises: a bin blockage identification system, a bin blockage clearing system and a control system; the bin blockage identification system comprises: the system comprises a bin blockage identification module and a master control unit of a bin blockage identification system; the bin blockage identification module is arranged on the outer wall of the silo and is in communication connection with the master control unit of the bin blockage identification system; the control system is respectively in communication connection with the main control unit of the bin blockage recognition system and the bin blockage clearing system. According to the scheme, the blocking state of the silo is recognized through the silo blocking recognition system, and then the operation of the silo clearing system is controlled through the control system according to the recognition result of the silo blocking recognition system, so that the effect of recognizing blocking firstly and then clearing blocking is achieved, the difficulty in recognizing the silo blocking is reduced, and the efficiency of silo clearing is improved.

Description

Intelligent blockage clearing and flow assisting system for silo

Technical Field

The invention relates to the technical field of treatment of silo material blockage, in particular to an intelligent blockage clearing and flow aiding system for a silo.

Background

The silo is widely applied to various large-scale enterprises such as mines, metallurgy, coal, building materials, thermal power and the like, and has the following two main functions: firstly, storing, namely storing a certain amount of materials according to the production requirements of enterprises, and unloading the materials according to a specific mode; and secondly, balanced production is realized, the operating systems of different sections are different, the processing capacities are different, the buffer material amount in a certain time needs to be set, and the continuous and balanced production is ensured.

The material in the feed bin has certain mobility, but in the actual production process, because various reasons such as the characteristic of material, the structure of feed bin, discharge equipment, feed bin blocking phenomenon often can appear, not only influences the effective volume of feed bin, influences the normal row material of feed bin moreover, can cause the feed bin to be totally stifled die when serious, causes follow-up operation to break off completely, seriously influences normal production. Wherein, the main reason for the blockage of the storage bin is the arching of the materials.

At present, the existing modes for clearing the blockage of the silo mainly comprise the following modes:

(1) manual cleaning: usually, a worker strikes the wall of the silo or the discharge opening with a hammer-like tool to generate vibration to allow the material to fall. The method has the possible transient effect, but the input labor amount is large, the labor efficiency is low, the cost is higher, and the storage bin is easy to deform to influence the strength after long-term knocking; when the storage bin is seriously blocked, the storage bin needs to be manually put into the storage bin for cleaning, so that the working danger is high, and safety accidents occur frequently;

(2) high-pressure water washing: some materials are tightly hardened in the bin, a water pipe cannot be inserted into the bin wall, and only part of the adhesive materials at the discharge opening of the bin can be cleaned even if high-pressure water is used, so that the cleaning difficulty and the labor intensity are high, in addition, the high-pressure water is used for washing, the moisture content of the materials is increased, the material quality is influenced, and the sanitation of the surrounding environment is influenced;

(3) a vibration motor: install at the feed bin outer wall, high-frequency vibration through the motor makes the material whereabouts, but the effect is limited, and the noise at work of vibrator is big in addition, poor stability, can cause certain damage to the bulkhead structure simultaneously.

However, the existing mode for clearing the blockage of the silo is still lack of recognition of the blockage state of the silo, and if the blockage state of the silo is judged manually, the problems that the difficulty is high, the blockage of the silo is delayed in clearing and the like exist.

Disclosure of Invention

In view of the above, the invention provides an intelligent silo blockage clearing and flow assisting system, which can identify the blockage state of a silo through a silo blockage identification system, and then control the operation of the silo blockage clearing system through a control system according to the identification result of the silo blockage identification system, so that the effect of identifying blockage and then clearing blockage is realized, the difficulty in identifying silo blockage is reduced, and the efficiency of silo blockage clearing is improved.

In order to achieve the purpose, the invention provides the following technical scheme:

an intelligent blockage-removing and flow-assisting system for a silo, comprising: a bin blockage identification system, a bin blockage clearing system and a control system;

the bin blockage identification system comprises: the system comprises a bin blockage identification module and a master control unit of a bin blockage identification system;

the bin blockage identification module is arranged on the outer wall of the silo and is in communication connection with the master control unit of the bin blockage identification system; the control system is respectively in communication connection with the main control unit of the bin blockage recognition system and the bin blockage clearing system;

the main control unit of the bin blockage identification system reads the signals collected by the bin blockage identification module, processes the collected signals and outputs the blockage state of the silo; and the control system reads the output result of the main control unit of the bin blockage recognition system and controls the operation of the bin blockage removal system according to the output result.

Preferably, the bin jam identification module comprises a plurality of vibration sensors;

the vibration sensors are arranged on the outer wall of the silo according to a preset array, and each vibration sensor is in communication connection with the main control unit of the silo blockage recognition system;

the vibration sensor is used for collecting vibration signals of the silo wall of the silo and transmitting the vibration signals to the main control unit of the silo blockage recognition system; the silo blockage identification system main control unit judges the silo material loosening condition of the position of the vibration sensor according to the vibration signal, identifies the silo material blockage condition of the position of the vibration sensor, and then transmits the identification result to the control system.

Preferably, a plurality of the vibration sensors are arranged on the outer wall of the silo in a layered mode, and each layer of the vibration sensors are evenly distributed around the outer wall of the silo.

Preferably, the bin unblocking system comprises an air cannon system; the air cannon system comprises a plurality of air cannons;

the air cannons are arranged on the outer wall of the silo in a layered mode, each layer of air cannons is evenly distributed around the outer wall of the silo, and each air cannon is in communication connection with the control system.

Preferably, the plurality of layers of air cannons and the plurality of layers of vibration sensors are alternately distributed on the outer wall of the silo in sequence along the vertical direction, and each layer of vibration sensors and the two layers of air cannons which are adjacent to each other up and down are distributed in a staggered mode.

Preferably, the vibration sensors or air cannons are distributed more densely the closer they are to the silo discharge.

Preferably, the bin unblocking system further comprises: the compressed air storage tank, the air supply main pipe and the plurality of annular branch pipes;

the annular branch pipes are sequentially sleeved on the outer wall of the silo in the vertical direction and are matched with the air cannons in a one-to-one correspondence mode, and the air inlet end of each layer of the air cannon is connected to the corresponding annular branch pipe;

one end of the air supply main pipe is connected to the air outlet end of the compressed air storage tank, and the other end of the air supply main pipe is connected to the plurality of annular branch pipes respectively.

Preferably, each of the ring branches is located below the air cannon of the corresponding layer.

Preferably, the air cannon comprises:

the air cannon bracket is arranged on the outer wall of the silo;

the air cannon body is arranged on the air cannon support;

the air cannon electromagnetic valve is arranged at the air outlet end of the air cannon body; the air cannon electromagnetic valve is in communication connection with the control system;

the air cannon jet pipe is used for penetrating the wall of the silo, the air inlet end of the air cannon jet pipe is positioned outside the silo and connected with the air outlet end of the air cannon gun body, and the air jet end of the air cannon jet pipe is positioned in the silo.

Preferably, the air injection end of the air cannon nozzle is parallel to the inner wall of the silo and is arranged in a downward inclined mode.

According to the technical scheme, the intelligent blockage clearing and flow assisting system for the silo, provided by the invention, has the advantages that the blockage state of the silo is firstly identified through the silo blockage identification system, and then the operation of the silo blockage clearing system is controlled through the control system according to the identification result of the silo blockage identification system, so that the effect of firstly identifying blockage and then clearing blockage is realized, the difficulty in identifying the silo blockage is reduced, and the efficiency of clearing the silo blockage is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an intelligent silo blockage clearing and flow aiding system provided by an embodiment of the invention;

FIG. 2 is a plan view of an air supply line and air cannon system provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an air cannon provided in accordance with an embodiment of the present invention;

fig. 4 is a schematic diagram of a bin jam recognition system provided by an embodiment of the present invention;

fig. 5a is a control flow chart of an automatic operation mode of the intelligent silo blockage clearing and flow aiding system according to the embodiment of the invention;

fig. 5b is a control flow chart of an automatic operation mode of the intelligent silo blockage clearing and flow aiding system according to another embodiment of the invention.

Wherein, 1 is a compressed air storage tank; 2 is an exhaust check valve; 3 is an exhaust butterfly valve; 4 is a main gas supply pipe; 5 is an annular branch pipe; 6 is an air supply ball valve of the air cannon; 7 is an air cannon; 8 is a silo; 9 is a power distribution cabinet; 10 is a PLC control cabinet; 11 is a cable; 12 is a vibration sensor; 13 is a signal processing main control system cabinet; 14 is a communication line; 15 is a discharging machine; 1-1 is a compressed air storage tank safety valve; 1-2 is a compressed air storage tank pressure gauge; 1-3 is a ball valve of a pressure gauge of a compressed air storage tank; 1-4 is a drain valve of a compressed air storage tank; 7-1 is an air cannon electromagnetic valve; 7-2 is an air cannon safety valve; 7-3 is an air cannon body; 7-4 is an air cannon spray pipe; 7-5 is an air cannon drain valve; 7-6 are air cannon supports.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The intelligent blockage clearing and flow aiding system for the silo, provided by the embodiment of the invention, as shown in fig. 1, comprises: a bin blockage identification system, a bin blockage clearing system and a control system;

the bin blockage identification module is arranged on the outer wall of the silo 8 and is in communication connection with the master control unit of the bin blockage identification system; the control system is respectively in communication connection with the main control unit of the bin blockage recognition system and the bin blockage clearing system;

the main control unit of the bin blockage identification system reads the signals collected by the bin blockage identification module, processes the collected signals and outputs the blockage state of the silo 8; and the control system reads the output result of the main control unit of the feed bin blockage recognition system and controls the operation of the feed bin blockage removal system according to the output result.

In this scheme, it should be noted that the main control unit of the bin blockage recognition system can process the signal collected by the bin blockage recognition module to obtain the blockage state (including whether the silo 8 is blocked and the data of the blockage position) of the silo 8, and then the control system controls the operation of the bin blockage recognition system according to the processing result of the main control unit of the bin blockage recognition system. More specifically, the main control unit of the bin blockage recognition system reads signals collected by the bin blockage recognition module arranged on the wall of the cylinder, the signals pass through the internal signal processing unit and the judgment unit, then the blockage state of the bin 8 is output, then the control system reads the output result of the main control unit of the bin blockage recognition system, the operation of the bin blockage removal system is automatically controlled according to the blockage state, and the effect of recognizing blockage firstly and then correspondingly removing blockage is achieved. Of course, as shown in fig. 1, the main control unit of the bin blockage recognition system is a signal processing main control system cabinet 13, and the control system is a PLC control cabinet 10. In addition, as shown in fig. 1, the silo blockage recognition module is used to be disposed on the outer wall of the conical section of the silo 8.

According to the technical scheme, the intelligent blockage clearing and flow assisting system for the silo provided by the embodiment of the invention has the advantages that the blockage state of the silo is firstly identified through the silo blockage identification system, and then the operation of the silo blockage clearing system is controlled through the control system according to the identification result of the silo blockage identification system, so that the effect of firstly identifying blockage and then clearing blockage is realized, the difficulty in identifying the silo blockage is reduced, and the blockage clearing efficiency of the silo is improved.

In the scheme, the vibration condition of the cylinder wall is related to the material loosening condition at the position; wherein, the looser the material is, the more violent the vibration is; conversely, the denser the material, the smaller the vibration; when materials are adhered or arch-formed in the cylinder wall, the vibration conditions of the cylinder wall at different positions can generate great difference with those in a normal production state; in contrast, the material blocking state in the silo can be judged according to the vibration state of the wall of the silo; accordingly, as shown in fig. 1, the bin blockage identification module comprises a plurality of vibration sensors 12;

the vibration sensors 12 are arranged on the outer wall of the silo 8 according to a preset array, and each vibration sensor 12 is respectively in communication connection with a main control unit of the silo blockage recognition system;

the vibration sensor 12 is used for collecting vibration signals of the silo wall of the silo 8 and transmitting the vibration signals to the main control unit of the silo blockage recognition system; the main control unit of the silo blockage identification system judges the material loosening condition of the silo 8 at the position of the vibration sensor 12 according to the vibration signal, identifies the material blockage condition inside the silo 8 at the position of the vibration sensor 12 and then transmits the identification result to the control system. That is, the vibration sensor array composed of the plurality of vibration sensors 12 is arranged on the outer wall of the silo 8 according to a preset mode so as to collect vibration signals of the silo 8 wall, and then the vibration signals are transmitted to the main control unit of the silo blockage recognition system, so that the loosening condition of the silo 8 material is judged according to the vibration state of the outer wall of the silo 8 near the installation position of the vibration sensors 12, the blockage condition and the blockage position of the material inside the silo 8 are judged, the information is transmitted to the control system, and the operation of the silo blockage removal system is controlled conveniently. In addition, the scheme designs the bin blockage recognition module into the vibration sensor array, and has the characteristics of simple structure, easiness in design, reliability in blockage recognition and the like.

In particular, in order to achieve full coverage of the silo wall blockage identification of the silo 8, the silo 8 is required to have an identification function in both the axial direction and the radial direction; accordingly, as shown in fig. 1 and 2, a plurality of vibration sensors 12 are arranged in layers on the outer wall of the silo 8, and each layer of vibration sensors 12 is evenly distributed around the outer wall of the silo 8.

Further, the bin blockage clearing system comprises an air cannon system; namely, the scheme adopts the air cannon blockage removal and flow aiding technology; wherein, in the instant that the solenoid valve itself was opened, rely on the air bubble instantaneous eruption compressed air flow to produce powerful explosive force, and then reduce adhesive force or frictional force between material and the feed bin inner wall and the mutual adhesive force and the frictional force of material, thereby effectively solved the jam problem that the silo interior material arouses because of bonding or consolidation arching, but also have energy availability factor height, no mechanical operation part, easy maintenance convenience and running cost low grade characteristics. Of course, the air cannon 7 has its air injection end disposed within the silo 8.

Specifically, in order to realize full coverage of the silo 8 for clearing the blockage on the silo wall, the axial direction and the radial direction of the silo 8 are required to have the blockage clearing function; accordingly, as shown in FIGS. 1 and 2, the air cannon system includes a plurality of air cannons 7;

the air cannons 7 are arranged on the outer wall of the silo 8 in a layered mode, each layer of air cannon 7 is evenly distributed around the outer wall of the silo 8, and each air cannon 7 is in communication connection with the control system.

Furthermore, the multiple layers of air cannons 7 and the multiple layers of vibration sensors 12 are sequentially and alternately distributed on the outer wall of the silo 8 along the vertical direction (from top to bottom), so that structural interference between the air cannons 7 and the vibration sensors 12 is avoided, and each layer of vibration sensors 12 and the two layers of air cannons 7 which are adjacent to each other up and down are distributed in a staggered mode. Because the structure of the bin wall is affected by the self weight of the air cannon 7 and the structure of the bracket thereof near the air cannon mounting bracket (hereinafter referred to as the air cannon bracket 7-6) and the cannon barrel (hereinafter referred to as the air cannon spray pipe 7-4), the vibration sensor 12 can not accurately reflect the vibration conditions of the bin wall in different states (normal use and blockage), and the blockage state of the bin wall can not be accurately judged; in contrast, since the vibration sensor 12 should be mounted at the empty position of the wall as much as possible, the mounting position of the vibration sensor 12 is designed to be displaced from the mounting position of the air cannon 7. In the scheme, each layer of air cannon 7 can be used as an operation unit, then the control system starts the operation units corresponding to the blocking positions in a close way to perform targeted blockage clearing according to the blocking position information sent by the main control unit of the bin blockage recognition system, namely, each air cannon 7 in the operation units is started in sequence to perform blockage clearing. The design of this scheme has clear stifled energy consumption low, clear stifled efficient and practice thrift characteristics such as manufacturing cost.

In the scheme, the problem that the closer the inner wall of the silo is to the discharge port, the more easily the silo is blocked by materials is found, and in order to overcome the problem, the adjustment of the layering mode of the vibration sensor 12 or the air cannon 7 is required; accordingly, as shown in FIG. 1, the multiple layers of vibration sensors 12 or air cannons 7 are more densely distributed as they approach the silo 8 discharge.

Specifically, as shown in fig. 1, the bunker unblocking system further includes: the compressed air storage tank 1, the main air supply pipe 4 and the plurality of annular branch pipes 5;

the plurality of annular branch pipes 5 are sequentially sleeved on the outer wall of the silo 8 along the vertical direction, wherein the annular branch pipes 5 surround the outer wall of the silo 8; the plurality of annular branch pipes 5 are matched with the plurality of layers of air cannons 7 in a one-to-one correspondence mode, namely, the number of the annular branch pipes 5 is the same as the number of the layers of the air cannons 7, namely, the annular branch pipes 5 are uniformly configured for each layer of the air cannons 7; the air inlet end of each layer of air cannon 7 is respectively connected with the corresponding annular branch pipe 5 so as to supply air to each layer of air cannon 7; wherein the air inlet end of each air cannon 7 is connected with the annular branch pipe 5 through a hose;

one end of the main air supply pipe 4 is connected to the air outlet end of the compressed air storage tank 1, and the other end of the main air supply pipe is connected to the plurality of annular branch pipes 5 respectively. That is to say, the compressed air of the compressed air storage tank 1 is distributed to each annular branch pipe 5 through the air supply main pipe 4, and the layered arrangement mode of each annular branch pipe 5 is matched with the layered arrangement mode of the air cannon 7, so that the scheme has the characteristics of clear structural hierarchy, reasonable structural layout and the like.

Further, as shown in FIG. 1, each ring branch 5 is located below a corresponding layer of air cannons 7. The annular branch pipe 5 is located at 10-20 centimeters below the air cannon 7, so that a space for installing and maintaining the air cannon 7 is reserved, and convenience in disassembly, assembly and maintenance of the air cannon 7 is guaranteed.

Specifically, as shown in fig. 3, air cannon 7 includes:

an air cannon bracket 7-6 arranged on the outer wall of the silo 8;

an air cannon body 7-3 arranged on the air cannon support 7-6;

the air cannon electromagnetic valve 7-1 is arranged at the air outlet end of the air cannon body 7-3; the air cannon electromagnetic valve 7-1 is in communication connection with the control system;

the air cannon jet pipe 7-4 is used for penetrating the wall of the silo 8, the air inlet end of the air cannon jet pipe is positioned outside the silo 8 and is connected with the air outlet end of the air cannon gun body 7-3, and the air jet end of the air cannon jet pipe is positioned in the silo 8. As shown in figure 1, the scheme is to form blasting blockage removal on the inner wall of a silo 8 through an air cannon spray pipe 7-4.

In addition, the air cannon 7 also comprises a hose 7-7 connected with the air inlet end of the air cannon body 7-3; of course, an air cannon air supply ball valve 6 is arranged between each hose 7-7 and the annular branch pipe 5, namely, one end of the air cannon air supply ball valve 6 is connected to the annular branch pipe 5, and the other end of the air cannon air supply ball valve 6 is connected to the hose 7-7; to better understand the blockage removal process of the air cannon 7, the working principle of the air cannon 7 is described as follows:

when the explosion-proof air cannon is used, the air supply ball valve 6 of the air cannon is firstly opened, the air cannon body 7-3 is inflated through the hose 7-7, then after a control system sends an opening signal, the electromagnetic valve 7-1 of the air cannon is opened, so that compressed air in the cannon body 7-3 instantly enters the air cannon spray pipe 7-4 to be sprayed out, explosive force is formed, and an arch or a bonded material in a bin wall is impacted to be loosened and fall off, so that the effect of explosion clearing and blockage in the bin wall is achieved.

In the scheme, in order to improve the blockage removing and flow aiding efficiency of the air cannon 7 and avoid damaging the inner wall of the silo 8; accordingly, as shown in FIG. 2, the air blast nozzles 7-4 have their air injection ends parallel to the inner wall of the silo 8 and are disposed obliquely downward.

The scheme is further described by combining the specific embodiment as follows:

the invention provides an intelligent, efficient, safe and environment-friendly intelligent blockage clearing, flow assisting and flow aiding system for a silo and a using method thereof, mainly solving the problem of blockage caused by wall adhesion and arch formation of materials in the silo, ensuring normal production of a factory, ensuring labor production safety, improving production efficiency and reducing labor intensity of workers.

The intelligent silo blockage clearing and flow aiding system and the using method thereof provided by the invention are suitable for automatically identifying and dredging the blockage of various lump materials and fine powder silos in the industries related to mines, metallurgy, power generation, coal and building materials.

The invention relates to an intelligent blockage clearing and flow aiding system which is formed by combining a bin blockage identification system, an air source system, an air supply pipeline system, an air cannon system, a power supply system and an intelligent control system;

as shown in fig. 1, the bunker blockage recognition system is composed of a sensor array composed of a group of vibration sensors 12 and a signal processing main control system cabinet 13. The vibration condition of the cylinder wall is related to the material loosening condition at the position, the more loose the material is, the more intense the vibration at the position is, the more compact the material is, the smaller the vibration is, when the material is adhered or arched in the cylinder wall, the vibration condition of the cylinder wall at different positions can generate great difference with that in a normal production state, and therefore, the material blocking state in the silo can be judged according to the vibration condition of the cylinder wall. The sensor array formed by the vibration sensors 12 is uniformly arranged on the outer wall of the silo 8 according to a certain mode, vibration signals (shown in figure 4) of the silo wall are collected, then the vibration signals are transmitted into a signal processing main control system cabinet 13, the loosening condition of the silo 8 materials is judged according to the vibration state of the outer wall of the silo 8 near the installation position of the vibration sensors 12, and therefore the blocking condition and the blocking position of the materials inside the silo 8 are judged and transmitted to an intelligent control system PLC control cabinet 10.

As shown in figure 1, the air source system is composed of a compressed air storage tank 1 and accessories thereof, and comprises the compressed air storage tank 1, a plant area compressed air interface 1-5, a compressed air storage tank safety valve 1-1, a compressed air storage tank pressure gauge 1-2, a compressed air storage tank pressure gauge ball valve 1-3, a compressed air storage tank drain valve 1-4, an exhaust check valve 2 and an exhaust butterfly valve 3, the air source system receives compressed air with certain pressure (0.5MPa-0.8MPa) from a plant area, supplies air to an air supply main pipe 4 and an annular branch pipe 5 through the exhaust check valve 2 and the exhaust butterfly valve 3, and finally provides purging power for an air cannon 7. The compressed air storage tank safety valve 1-1 ensures that the pressure of the compressed air storage tank 1 is in a safety range (0.5MPa-0.8MPa), the compressed air storage tank pressure gauge 1-2 can check the pressure of the compressed air storage tank 1, the compressed air storage tank pressure gauge ball valve 1-3 facilitates the replacement and maintenance of the compressed air storage tank pressure gauge 1-2, the compressed air storage tank drain valve 1-4 is used for draining the compressed air storage tank 1, the exhaust check valve 2 ensures the air supply direction, and the exhaust butterfly valve 3 controls the compressed air storage tank 1 to supply air to the air supply pipeline air supply main pipe 4, the annular branch pipe 5 and the air cannon 7.

The air supply pipeline system comprises an air supply main pipe 4, an annular branch pipe 5 and an air cannon air supply ball valve 6, compressed air with certain pressure (0.5-0.8 MPa) provided by an air source system is distributed to the annular branch pipe 5 through the air supply main pipe 4, the annular branch pipes 5 are annularly arranged outside a silo 8 from top to bottom in a layered mode, and the compressed air is connected to an air cannon 7 through the air cannon air supply ball valve 6 to supply air. The annular branch pipe 5 is positioned at the lower side of the air cannon 7 by 10-20 cm, a space for installing and maintaining the air cannon 7 is reserved, the radius of the space is 40-50 cm larger than that of the silo 8, and a steel structure support is arranged at the outer side of the silo 8 to support and fix the annular branch pipe 5.

The air cannon 7 comprises an air cannon body 7-3, an air cannon electromagnetic valve 7-1, an air cannon safety valve 7-2, an air cannon drain valve 7-5, a hose 7-7, an air cannon spray pipe 7-4 and an air cannon support 7-6, when the air cannon is used, an air cannon air supply ball valve 6 of an air supply pipeline system annular branch pipe 5 is firstly opened, the air cannon body 7-3 is inflated through the hose 7-7, the safety pressure range (0.5MPa-0.8MPa) is kept through the air cannon safety valve 7-2, the control system PLC control cabinet 10 sends out an opening signal, the air cannon electromagnetic valve 7-1 is opened, compressed air in the air cannon body 7-3 instantly enters the air cannon spray pipe 7-4 to be sprayed out, explosive force is formed, impact is formed on a knot arch or a bonded material, and the knot arch or the bonded material is loosened and falls off. The air cannons 7 are arranged on the outer wall of the silo 8 through air cannon brackets 7-6 and are arranged in a layered mode, the distance between every two layers is 2-3 meters, and the distance between every two layers in the horizontal direction is 1.3-1.4 meters. The air cannon spray pipe 7-4 is a heat-resistant wear-resistant downward-spraying spray pipe, can adapt to raw materials with high abrasiveness such as ores and coals, and is long in service life.

The power supply system comprises a power distribution cabinet 9 and a cable 11, an AC220V power supply is connected to the power distribution cabinet 9 from an existing power distribution room in a factory, and the power distribution cabinet 9 supplies power to the air cannon 7 through the cable 11 to drive the switch of the electromagnetic valve 7-1. Meanwhile, the power distribution cabinet provides AC220V power to the PLC control cabinet 10 of the intelligent control system.

The intelligent control system comprises a PLC control cabinet 10, a cable 11 and a communication line 17. The PLC control cabinet 10 includes a power module, a communication module, a PLC (programmable logic controller), and an input/output module. The communication module selects a PROFIBUS DP communication protocol, configures a relevant communication module and realizes the remote control of the communication with the whole plant DCS system; the input and output module selects the touch screen to realize the display and control functions.

The control system has three operation modes: a service mode, a manual mode and an automatic control mode.

And in the maintenance mode, each air cannon 7 can be independently operated, so that troubleshooting and equipment maintenance are facilitated.

The manual operation mode is characterized in that each layer of air cannon is used as an operation unit, a certain operation unit can be selected at will, when a certain unit is operated, each air cannon 7 is started in sequence according to a certain time interval (not less than 10 seconds), under the manual operation mode, the blockage condition of the silo is judged by manually observing the conditions of the material level, the vibration of the barrel wall, the material discharge and the like of the silo 8, then, a certain operation unit is selected for operation, the manual operation mode has high flexibility, and process parameters can be explored for the automatic control mode.

In the automatic control mode, a main control unit of the bin blockage recognition system, namely a signal processing main control system cabinet 13, continuously reads signals of a vibration sensor 12 arranged on the wall of the bin, and outputs the blockage state (including whether the bin is blocked and the data of the blockage position) of the bin 8 through a built-in signal processing unit and a judgment unit. The control system PLC control cabinet 10 continuously reads the output result of the signal processing main control system cabinet 13, the air cannon 7 system is automatically started according to the blocking state, each layer of air cannon is taken as an operation unit for the air cannon 7 system operation, the corresponding air cannon operation units which are close to each other are started according to the blocking position, each air cannon in the operation units is sequentially started, after one operation unit finishes working, the discharging machine 15 runs for a period of time (2-5 minutes), the control system PLC control cabinet 10 repeats the working contents according to the information sent by the signal processing main control system cabinet 13, the bin state is continuously detected through the bin blocking identification system, and if the bin is still in the blocking state, the corresponding air cannon operation unit is continuously started according to the blocking position for clearing the blocking.

Fig. 5a shows the automatic block clearing control logic in the automatic control mode. The control system continuously monitors information transmitted from the blockage identification system, namely the output value A-x of each layer of vibration sensor array indicates the number of layers, if the value of A-x is 1, the blockage of the xth layer is indicated, and if the value of A-x is 0, the operation of the xth layer is normal; after the A-x value is obtained, the control system carries out condition judgment and executes subsequent operations, if the A-x value is 0, the control system does not execute any operation and directly exits, if the A-x value is 1, the control system indicates that the silo at the position is blocked, and executes the following operations: starting the layer of air gun group corresponding to the layer x, wherein the specific implementation mode is shown in FIG. 5 b; and after the execution of the air cannon on the x-th layer is finished, the control system starts to time for 5 minutes, the silo runs for a period of time to discharge materials, the control system returns to the condition judgment again after the 5 minutes, if the silo is still blocked, the air cannon groups on the corresponding layer are continuously executed, and if the silo returns to be normal, the quitting is finished.

FIG. 5b is a diagram of specific implementation control logic for a layer of air cannon groups in the control system, as called by the control logic of FIG. 5 a. L represents an L-th layer air gun group, and L-n represents an nth air gun of the L-th layer air gun group; when the system is called, the L-1, the L-2, the L-n air cannons are started in sequence, the time interval is 10 seconds, and the system is stopped after the last air cannon is started.

The invention also provides a use method of the intelligent blockage removing and flow aiding system, which comprises the following steps: (1) confirming that the air source system is available, checking and confirming that a pressure gauge 1-2 of the air storage tank is in an available range, and opening a butterfly valve 3 of the air source system; (2) confirming that the main gas supply pipe 4 and the annular branch pipe 5 of the gas supply pipeline system are normal without gas leakage and blockage; (3) confirming that the power distribution cabinet 9 and the cable 11 of the power supply system supply power normally, and normally starting up and preparing to finish the intelligent control system PLC control cabinet 10; (4) and selecting an operation mode to operate.

The key points and points to be protected of the invention are as follows:

(1) the invention of the application relates to a design method for layering arrangement of air cannons;

(2) the vibration sensor array design method of the invention of the application;

(3) the bin blockage identification system disclosed by the application;

(4) the intelligent control system of the invention of the application;

(5) the application method of the invention;

the invention has the advantages that:

after the intelligent blockage clearing and flow aiding system for the silo and the using method thereof adopt the technical scheme, the intelligent blockage clearing and flow aiding system has the following positive effects:

(1) the air cannon is a mature industrial product, can store compressed air of a certain volume, has larger kinetic energy, the technology of the invention adopts the air cannon flow-assisting, blockage-clearing and flow-assisting, at the moment when the electromagnetic valve of the air cannon is opened, the compressed air flow ejected by the air cannon instantly generates strong explosive force, reduces the adhesive force or friction force between the materials and the inner wall of the storage bin and the adhesive force and friction force between the materials, effectively solves the blockage problem caused by bonding or consolidation arching of the materials in the storage bin, has high energy use efficiency, has no mechanical operation part, is simple and convenient to maintain and has low operation cost; (2) the air cannon systems are arranged in a layered mode, each air cannon can cover the area of a certain barrel wall, the spray pipes are parallel to the inner wall of the silo and spray downwards in an inclined mode, the arrangement is reasonable, the spray pipes are made of wear-resistant and heat-resistant alloy, the service life is long, the energy distribution of the blockage removing flow aiding is uniform, and the blockage removing flow aiding efficiency is high; (3) the working medium adopts low-pressure air (the working pressure is 0.5-0.8MPa), the working pressure range is large, the requirement on a plant air source system is low, and the operation is economic, safe and environment-friendly; (4) the intelligent control system has perfect functions, can realize three modes of an overhaul mode, a manual operation mode and an automatic operation mode, can select local control and remote control, can process various complex working conditions in production, can operate a single air cannon, can operate by taking a layer as a minimum operation unit, can set an operation sequence and an operation time interval, can automatically judge the blocking state of the storage bin by monitoring the states of the storage bin and a discharge system in real time in the automatic operation mode, can start the air cannon system by taking the layer as the minimum operation unit, can automatically stop the air cannon system and continuously monitor the states of the storage bin and the discharge system if the blocking state of the storage bin is cleared, and can realize automatic identification and automatic clearing of the blocking state of the storage bin Advanced; (5) the invention has simple structure, reliable performance, perfect function, advanced control, green and energy saving, thoroughly solves the potential safety hazard caused by manual blockage clearing and flow aiding, eliminates the defects of the prior various silo blockage clearing and flow aiding technologies, is a great progress of the silo blockage clearing and flow aiding technologies, and can be widely applied to the construction of newly-built material bins and the technical transformation of old material bins in the industries of mines, coal, metallurgy, thermal power, building materials and the like.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent blockage-removing and flow-assisting system for a silo is characterized by comprising: a bin blockage identification system, a bin blockage clearing system and a control system;

the bin blockage identification module is arranged on the outer wall of a silo (8) and is in communication connection with the master control unit of the bin blockage identification system; the control system is respectively in communication connection with the main control unit of the bin blockage recognition system and the bin blockage clearing system;

the main control unit of the silo blockage identification system reads the signals collected by the silo blockage identification module, processes the collected signals and outputs the blockage state of the silo (8); and the control system reads the output result of the main control unit of the bin blockage recognition system and controls the operation of the bin blockage removal system according to the output result.

2. A silo intelligent blockage removal flow aid system as claimed in claim 1, wherein the silo blockage identification module comprises a plurality of vibration sensors (12);

the vibration sensors (12) are arranged on the outer wall of the silo (8) according to a preset array, and each vibration sensor (12) is in communication connection with the main control unit of the silo blockage recognition system;

the vibration sensor (12) is used for collecting vibration signals of the silo wall of the silo (8) and transmitting the vibration signals to the main control unit of the silo blockage recognition system; the silo blockage identification system main control unit judges the material loosening condition of the silo (8) at the position of the vibration sensor (12) according to the vibration signal, identifies the material blockage condition inside the silo (8) at the position of the vibration sensor (12), and then transmits the identification result to the control system.

3. An intelligent silo blockage clearing and flow aiding system according to claim 2, wherein a plurality of vibration sensors (12) are arranged on the outer wall of the silo (8) in a layered mode, and each layer of the vibration sensors (12) is evenly distributed around the outer wall of the silo (8).

4. A silo intelligent blockage clearing and flow aiding system according to claim 3, wherein the silo blockage clearing system comprises an air cannon system; the air cannon system comprises a plurality of air cannons (7);

the air cannons (7) are arranged on the outer wall of the silo (8) in a layered mode, each layer of air cannons (7) are evenly distributed around the outer wall of the silo (8), and each air cannon (7) is in communication connection with the control system.

5. The intelligent blockage removing and flow assisting system for the silo according to claim 4, wherein the plurality of layers of air cannons (7) and the plurality of layers of vibration sensors (12) are sequentially and alternately distributed on the outer wall of the silo (8) along the vertical direction, and each layer of vibration sensors (12) and two layers of air cannons (7) which are adjacent to each other up and down are distributed in a staggered mode.

6. An intelligent silo blockage removing and flow assisting system according to claim 5, wherein the vibration sensors (12) or the air cannons (7) are distributed more densely as the vibration sensors or the air cannons are closer to a discharge opening of the silo (8).

7. The intelligent silo blockage clearing and flow assisting system of claim 4, wherein the silo blockage clearing system further comprises: the compressed air storage tank (1), the air supply main pipe (4) and a plurality of annular branch pipes (5);

the annular branch pipes (5) are sequentially sleeved on the outer wall of the silo (8) in the vertical direction and are matched with the air cannons (7) in a one-to-one correspondence mode, and the air inlet end of each layer of the air cannons (7) is connected to the corresponding annular branch pipe (5);

one end of the air supply main pipe (4) is connected to the air outlet end of the compressed air storage tank (1), and the other end of the air supply main pipe is connected to the plurality of annular branch pipes (5).

8. A silo intelligent blockage clearing and flow aiding system according to claim 7, characterized in that each annular branch pipe (5) is positioned below the air cannon (7) on the corresponding layer.

9. A silo intelligent blockage-clearing flow-aiding system according to claim 4, wherein the air cannon (7) comprises:

an air cannon support (7-6) arranged on the outer wall of the silo (8);

an air cannon body (7-3) arranged on the air cannon bracket (7-6);

the air cannon electromagnetic valve (7-1) is arranged at the air outlet end of the air cannon body (7-3); the air cannon electromagnetic valve (7-1) is in communication connection with the control system;

the air cannon jet pipe (7-4) is used for penetrating the wall of the silo (8), the air inlet end of the air cannon jet pipe is positioned outside the silo (8) and connected with the air outlet end of the air cannon gun body (7-3), and the air outlet end of the air cannon jet pipe is positioned in the silo (8).

10. An intelligent silo blockage removing and flow assisting system according to claim 9, wherein the air injection end of the air cannon spray pipe (7-4) is parallel to the inner wall of the silo (8) and is arranged in a downward inclined mode.