CN108820613B - Powder bin safety monitoring system - Google Patents
Powder bin safety monitoring system Download PDFInfo
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- CN108820613B CN108820613B CN201810784663.5A CN201810784663A CN108820613B CN 108820613 B CN108820613 B CN 108820613B CN 201810784663 A CN201810784663 A CN 201810784663A CN 108820613 B CN108820613 B CN 108820613B
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- feeding
- powder
- bin
- level gauge
- safety
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- 239000000843 powder Substances 0.000 title claims abstract description 123
- 238000012544 monitoring process Methods 0.000 title claims abstract description 46
- 239000000428 dust Substances 0.000 claims abstract description 31
- 230000000903 blocking effect Effects 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000004973 liquid crystal related substance Substances 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000004071 soot Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000035553 feeding performance Effects 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
Abstract
The invention discloses a powder bin safety monitoring system, which comprises a feeding pipe arranged at the upper part of the side wall of a closed powder bin, a feeding control valve arranged at the bottom end of the feeding pipe, and a level gauge arranged at the top of the side wall of the closed powder bin, wherein the level gauge comprises a rotary blocking type level gauge and a heavy hammer type level gauge, the feeding control valve can be controlled through a safety feeding control terminal, the terminal is provided with a plurality of safety control measures such as an input password, a two-stage bin cover and the like, the feeding condition of the bin can be monitored through the rotary blocking type level gauge and the heavy hammer type level gauge, roof fall is prevented, accurate measurement of powder in the bin can be realized, and the safety and reliability are further enhanced by arranging a cloth bag dust remover to ensure that the powder cannot explode during feeding.
Description
Technical Field
The invention relates to the technical field of bins, in particular to a powder bin safety monitoring system.
Background
The powder bin is used in a plurality of industrial fields such as building, food, and in the prior art, when feeding to the powder bin, need carry out real-time supervision to the feeding process, prevent that the excessive and roof-fall of feeding from appearing and destroy the powder bin.
In the prior art, potential safety hazards exist for opening and closing the feed valve, and real-time authorization of control authority and real-time monitoring of control state cannot be achieved.
In addition, when the powder bin enters the bin, dust can be generated in the bin, and hidden dangers such as explosion and the like can be caused by the dust in a closed environment, so that the hidden dangers also need to be eliminated.
Therefore, it is necessary to provide a powder bin safety monitoring system capable of solving the above technical problems.
Disclosure of Invention
The invention mainly solves the technical problem of providing a powder bin safety monitoring system, which solves the problem of potential control safety hazards in the prior art when the powder bin is fed.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a powder storehouse safety monitoring system, including setting up the inlet pipe on airtight powder storehouse lateral wall upper portion, the setting is in the feed control valve of inlet pipe bottom, and the setting is in the charge level indicator at airtight powder storehouse lateral wall top, the charge level indicator is blocked to the charge level indicator that rotates, hinder the rotation type charge level indicator includes the control end and is in the cylinder cover of control end below be provided with the rotator in the cylinder cover the rotator lower extreme is crooked slice detection portion, the control end is including driving rotator pivoted first motor and control first motor pivoted monitor circuit, the control end sets up the roof outside of powder storehouse, the cylinder cover passes the roof of powder storehouse gets into the inside of powder storehouse, when the inlet pipe to the powder storehouse is input, first motor drive in the control end the rotator rotates, the slice detection portion detects the height of the powder that gets into in the powder storehouse when the height of powder reaches slice detection portion place the position, be in the slice detection portion of rotation state the powder reduces and stops and blocks and stops the control end, and stop the feeding rate is received the control end is stopped or stop the control signal is received and the feeding is stopped and the control signal is sent and is stopped.
In another embodiment of the powder bin safety monitoring system, the powder bin safety monitoring system further comprises a safety feeding control terminal, the safety feeding control terminal is electrically connected with the feeding control valve, the rotation-resisting type level gauge and the safety feeding control terminal both comprise wireless communication modules, and the control end of the rotation-resisting type level gauge sends the full material indication signal to the safety feeding control terminal through the wireless communication modules, so that the safety feeding control terminal controls the feeding control valve to be closed.
In another embodiment of the powder bin safety monitoring system, the safety feeding control terminal comprises a box body and a box cover, a control switch and a control keyboard are arranged on the box cover, a control circuit is arranged in the box body, when the feeding control valve is started by the safety feeding control terminal, a dynamic password is required to be received in advance, and then the feeding control valve can be started by the control switch after the dynamic password is input by the control keyboard.
In another embodiment of the powder bin safety monitoring system, a second box cover is further arranged in the box body, the second box cover is hinged with the side wall of the box body, the control circuit is further contained in a cavity surrounded by the second box cover and the box body, a liquid crystal display screen is arranged on the outer side of the second box cover, a transparent display window for observing the liquid crystal display screen is correspondingly formed in the box cover, the liquid crystal display screen is electrically connected with the control circuit, and the control circuit detects the material level condition in the bin according to the material level indicator and dynamically displays the material level condition in the bin on the liquid crystal display screen, and the on-off state of the feeding control valve.
In another embodiment of the powder bin safety monitoring system, the material level gauge further comprises a weight type material level gauge, the weight type material level gauge comprises a box body, a controller, a weight and a steel wire rope, wherein the controller, the weight and the steel wire rope are arranged in the box body, the steel wire rope is connected with the weight, the steel wire rope is wound around a wheel set, a mounting plate is arranged in the box body, the wheel set is arranged on the rear side surface of the mounting plate, the wheel set comprises a winding drum, a guide wheel and a measuring wheel, a second motor for driving the winding drum to rotate is arranged on the front side surface of the mounting plate, a balance wheel mechanism is hinged on the rear side surface of the mounting plate, the balance wheel mechanism comprises a balance wheel, the winding drum is arranged on the left upper side of the mounting plate, the guide wheel is arranged on the left lower side of the mounting plate, the balance wheel is arranged on the right lower side of the winding drum, the measuring wheel is arranged on the left lower side of the balance wheel and on the right side of the guide wheel, the steel wire rope is wound around the guide wheel, the balance wheel and the measuring wheel by the winding drum, the second motor is arranged in the box body, and the balance wheel is sequentially used for driving the first sensor to rotate around the winding drum, and the second sensor is arranged in the box body or the second sensor to be connected with the powder bin to the inner side of the powder bin, and the second sensor is arranged on the inner side of the powder bin or the powder bin, and the powder bin is controlled to be in the powder bin or the powder bin and the powder bin is controlled to be the powder sensor.
In another embodiment of the powder bin safety monitoring system of the invention, the weight type bin level gauge is arranged on the top of the cylindrical bin, and the distance from the center of the top of the bin is one half radius of the cylindrical bin.
In another embodiment of the powder bin safety monitoring system, the feeding control valve comprises a connecting plate arranged on the feeding pipe, and a blocking piece hinged with the connecting plate, wherein the blocking piece is used for opening and closing a port of the feeding pipe, the feeding valve further comprises a locking piece for locking the blocking piece, and the locking piece acts according to an electric signal allowing feeding or an electric signal completing feeding so as to enable the blocking piece and the feeding pipe to be relatively locked and unlocked.
In another embodiment of the powder bin safety monitoring system, a bag-type dust remover is further arranged on the side wall, opposite to the feeding pipe, of the upper portion of the powder bin, the feeding control terminal is further electrically connected with the bag-type dust remover, and dust generated by feeding is removed by starting the bag-type dust remover in the feeding process.
In another embodiment of the powder bin safety monitoring system of the invention, the weight type level gauge and the rotation-resisting type level gauge are connected in series with a common power line and are also interconnected through a data line, thereby forming a level gauge group, when a plurality of bins exist, one level gauge group is arranged on the top wall of each bin, the level gauge groups are connected in parallel with the common power line, the data lines of the level gauge groups are connected to the same wireless transceiver, and the wireless transceiver is used for communicating information with the wireless communication module of the safety feeding control terminal.
In another embodiment of the powder bin safety monitoring system of the present invention, the wireless transceiver is also communicatively interconnected with a remote control terminal disposed in the weigh house, the remote control terminal thereby displaying the monitoring of each of the bins.
The beneficial effects of the invention are as follows: the invention discloses a powder bin safety monitoring system, which comprises a feeding pipe arranged at the upper part of the side wall of a closed powder bin, a feeding control valve arranged at the bottom end of the feeding pipe, and a level gauge arranged at the top of the side wall of the closed powder bin, wherein the level gauge comprises a rotary blocking type level gauge and a heavy hammer type level gauge, the feeding control valve can be controlled through a safety feeding control terminal, the terminal is provided with a plurality of safety control measures such as an input password, a two-stage bin cover and the like, the feeding condition of the bin can be monitored through the rotary blocking type level gauge and the heavy hammer type level gauge, roof fall is prevented, accurate measurement of powder in the bin can be realized, and the safety and reliability are further enhanced by arranging a cloth bag dust remover to ensure that the powder cannot explode during feeding.
Drawings
FIG. 1 is a schematic diagram of the composition of one embodiment of the powder bin safety monitoring system of the present invention;
FIG. 2 is a schematic view of a rotation-resistant level gauge in another embodiment of the powder bin safety monitoring system of the invention;
FIG. 3 is a schematic diagram of a safety loading control terminal in another embodiment of the powder bin safety monitoring system of the invention;
FIG. 4 is a schematic view of a weight type level gauge in another embodiment of the powder bin safety monitoring system of the invention;
FIG. 5 is a schematic view of calculation of the volume of powder in a bin in another embodiment of the powder bin safety monitoring system of the invention;
FIG. 6 is a schematic diagram of the feed control valve assembly in another embodiment of the powder bin safety monitoring system of the present invention;
FIG. 7 is a schematic diagram of a system networking in another embodiment of the powder bin safety monitoring system of the invention.
Detailed Description
In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 shows a preferred embodiment of a safety monitoring system for a powder bin, which as shown in fig. 1 comprises a feeding pipe 11 arranged at the upper part of a side wall 101 of a closed powder bin 1, a feeding control valve 12 arranged at the bottom end of the feeding pipe, and a level gauge arranged at the top wall 102 of the closed powder bin.
The level gauge comprises a rotation-resisting level gauge 13, and referring to fig. 2, the rotation-resisting level gauge 13 comprises a control end 131 and a cylindrical cover 132 below the control end 131, a rotary body 133 is arranged inside the cylindrical cover 132, the lower end of the rotary body 133 is a curved sheet-shaped detection part 134, and the control end 131 comprises a first motor for driving the rotary body 133 to rotate and a monitoring circuit for controlling the first motor to rotate. As shown in fig. 1, the control end 131 is disposed outside the top wall 102 of the powder bin 1, the cylindrical cover 132 passes through the top wall 102 of the powder bin 1 and enters the powder bin 1, when powder is input into the powder bin through the feed pipe 11, the first motor in the control end 131 drives the rotating body 133 to rotate, the sheet-shaped detection part 134 detects the height of the powder entering the powder bin 1, when the height of the powder reaches the position of the sheet-shaped detection part 134, the sheet-shaped detection part 134 in a rotating state is blocked by the powder and reduces the rotating speed or is blocked and stops rotating, and after the control end 131 senses the rotation slowing down or stopping information of the sheet-shaped detection part, a full-charge indication signal is sent, and then the feed control valve 12 is closed and stops feeding.
The upper limit height of powder entering the powder bin can be effectively detected by arranging the rotation-resistant material level gauge 13 at the top of the bin, and the sheet detection part is at least the length distance of the rotating body from the top wall of the bin, so that the powder is ensured not to be filled and rise to the top wall of the bin.
Preferably, as shown in fig. 1, the powder bin safety monitoring system further includes a safety feeding control terminal 14, the safety feeding control terminal 14 is electrically connected with the feeding control valve 12, the rotation-resisting type level gauge 13 and the safety feeding control terminal 14 each include a wireless communication module, and the control end 131 of the rotation-resisting type level gauge 13 sends the full-feeding indication signal to the safety feeding control terminal 14 through the wireless communication module, so that the safety feeding control terminal 14 controls the feeding control valve 12 to be closed.
The safety feeding control terminal is in wired electric connection with the feeding control valve, because the current and the voltage required by the control of the feeding control valve are large, the wired connection is suitable for the electricity demand, the reliability of the control is enhanced, and the safety feeding control terminal and the feeding control valve are close to the ground, so that the wiring arrangement is convenient. And safety material loading control terminal and hinder and revolve charge level indicator and pass through wireless communication module intercommunication, like short distance wifi or microwave communication, can avoid the complexity of wired mode upper and lower wiring in the feed bin, be favorable to equipment installation to use.
Further, as shown in fig. 3, the safety feeding control terminal 14 includes a box 412 and a box cover 411, and a control switch 4112 and a control keyboard 4111 are disposed on the box cover, when the feeding control valve is opened by the safety feeding control terminal 14, a dynamic password needs to be received in advance, and then the feeding control valve can be opened by the control switch 4112 after the dynamic password is input by the control keyboard 4111.
By providing control buttons and a control keyboard at the safety feeding control terminal 14 and ensuring the control safety of the feeding control valve in a dynamic password mode, special people are required to operate to ensure that correct powder is added into the corresponding bin when the feeding control valve is started for feeding.
Preferably, a print output port is further provided on the case cover 411, a micro printer is provided on the inner side of the case cover 411 and electrically connected with the control circuit 42, when the feeding operation is performed, the control circuit 42 can print the bin number and the feeding dynamic password according to the use condition of the powder in the bin, so that the operator can input the dynamic password through the keyboard 4111 to perform the operation accordingly.
Further, the key switch 4112 includes a feed valve in-place key, a feed valve off-place key, a feed completion key, and a manual valve opening key. Wherein, when the in-place key of the feed valve is pressed, the feed control valve can be fully opened by the control circuit 42; and when the feed valve close key is pressed, the feed control valve can be completely closed by the control circuit 42; when the loading completion key is pressed, the control circuit 42 can control the closing of the powder source outlet, and the power device related to the loading stops running; the manual valve opening key is used for manually and mechanically controlling the feeding control valve when the control circuit 42 cannot control the feeding control valve through electric control, so that the feeding control valve can be controlled in a power-off state, and the control safety is improved.
Preferably, the in-place key of the feeding valve and the finishing key of the feeding valve also comprise indicator lights, the indicator lights corresponding to the pressing keys are turned on, the indicator lights corresponding to the lifting keys are turned off, the manual valve opening key is provided with a key jack, and the manual valve opening operation can be performed only after the manual valve opening key is inserted into the manual valve opening key. In addition, a cover lock 4114 is further provided on the cover 411, and is used for locking the cover 411 and the case 412 after closing.
Further preferably, a circumferentially continuous and closed flange 4121 is provided on the outer side of the edge of the case 412, a rubber pad 4 for preventing water from entering is provided on the inner side of the case cover 411 corresponding to the flange, and when the case cover 411 is covered on the case 412, since a case cover lock 4114 for locking the case cover 411 and the case 412 is further provided on the case cover 411, the rubber pad is tightly combined with the flange 4121 after the case cover is locked. The terminal has good waterproof safety through the close fit of the rubber pad and the convex edge 4121.
Further, a second cover 413 is further disposed inside the case 412, and the second cover 413 is hinged to a side wall of the case 412, and further accommodates the control circuit 42 in a cavity surrounded by the second cover 413 and the case 412.
Further, a liquid crystal display 4131 is disposed on the outer side of the second cover 413, a transparent display window 4115 for observing the liquid crystal display 4131 is correspondingly formed on the cover 411, the liquid crystal display 4131 is electrically connected with the control circuit 42, and the control circuit 42 detects the material level condition in the bin according to the level indicator, and dynamically displays the material level condition in the bin and the switch state of each switch on the liquid crystal display 4131. Preferably, the liquid crystal display 4131 may also be a touch display, and soft control keys may be provided on the display interface.
Preferably, the control circuit 42 is further electrically connected to the bag-type dust collector at the top of the bin, the second cover 413 is provided with a manual dust removing knob 4132, and the manual dust removing knob 4132 is provided with a key hole, and the manual dust removing control operation can be performed only after the dust removing key is inserted into the manual dust removing knob 4132.
Through setting up the second case lid, further strengthened the safety protection to control circuit in the box, set up liquid crystal display on the second case lid in addition, can present the material level condition of feed bin, the control of being convenient for directly perceived is shown to the case lid of first layer is as the protection in addition, makes liquid crystal display can not expose in the box outside, both is favorable to observing under the highlight, also is favorable to preventing to destroy the liquid crystal display under the construction environment. The manual dust removing knob for dust removing control is arranged on the second box cover, so that manual control can be performed when automatic control of dust removing can not be performed, and the reliability and safety of operation control are further enhanced.
Further preferably, as shown in fig. 1, the level gauge further comprises a weight type level gauge 15. As shown in fig. 4, the weight type level gauge 15 includes a box 21, a weight 22, a wire rope 23 connected with the weight 22, and a wheel set wound around the wire rope 23, wherein a mounting plate 24 is disposed in the box 21, the wheel set is disposed on the rear side of the mounting plate 24, the wheel set includes a drum 26, a guide wheel 25, and a measuring wheel 27, a second motor for driving the drum 26 to rotate is disposed on the front side of the mounting plate 24, a balance mechanism is hinged on the rear side of the mounting plate 24, the balance mechanism includes a swing rod 29, one end of the swing rod 29 is hinged on the mounting plate 24, the other end of the swing rod 29 is a free end and is provided with a balance wheel 210, the swing rod 29 is placed in a left-right direction, the balance mechanism further includes a supporting spring 211, one end of the supporting spring 211 is connected on the mounting plate 24, the other end is connected on the swing rod 29, the drum 26 is disposed on the upper left side of the mounting plate 24, the guide wheel 25 is disposed on the lower left side of the mounting plate 24, the balance wheel 210 is disposed on the lower right side of the drum 26, the free end of the swing rod 29 is disposed on the right side of the drum 26, the measuring wheel 27 is disposed on the lower left side of the balance wheel 210, and is wound around the guide wheel 25 on the right side of the drum 25, the balance wheel 23 is wound around the guide wheel 25, and the wire rope 25 is wound around the lower side of the drum 25 by the guide wheel 25, and the winding wire rope 25. The weight 22 extends from the lower end of the box 21, a first sensor for measuring the number of turns of the measuring wheel 27 is arranged in the box 21, a second sensor for detecting the swinging state of the balance wheel 210 is also arranged in the box 21, and a controller is arranged on the mounting plate 24, and the first sensor and the second sensor are in communication connection with the controller.
Further preferably, the swing rod 29 is provided with a limiting plate 212, the left end of the limiting plate 212 is hinged with the hinged end of the swing rod 29, a tension spring 213 is arranged between the right end of the limiting plate 212 and the mounting plate 24, the right end of the limiting plate 212 is provided with a positioning groove 214, the swing rod 29 is provided with a positioning column 215, and the positioning column 215 is located in the positioning groove 214 and can move in the positioning groove 214. The lower end face of the positioning groove 214 balances and limits the swing rod 29 in the process of winding and unwinding the steel wire rope 23 and in the fully-retracted state of the steel wire rope 23, and the upper end face of the positioning groove 214 limits the swing limit of the swing rod 29 in the weightless state of the heavy hammer 22.
The locating groove 214 that sets up on the limiting plate 212, the reference column 215 on the pendulum rod 29 cooperates with the locating groove 214, makes the pendulum rod 29 receive with the pulling force opposite to weight 22 bear by the extension spring 211 of propping the force spring and the extension spring 213 of limiting plate jointly, has adopted the double-spring to exert force when balancing the pulling force of weight 22 promptly, has reduced the working strength that props the force spring 211 to the double-spring exerts force, can also eliminate the resonance of spring, increases the life of this application. Secondly, when the weight loss of the heavy hammer 22 causes the movement of the swing rod 29, the limiting plate 212 is kept motionless, when the weight loss state of the heavy hammer 22 is ended, the swing rod 29 swings rapidly in the ascending process, and when the positioning column 215 on the swing rod 29 abuts against the lower wall of the positioning groove 214 of the limiting plate 212, the swing rod 29 can be quickly restored to the balanced state, so that the stable ascending of the heavy hammer 22 is ensured.
Further preferably, the rear side of the mounting plate 24 is provided with an upper stop block 216 and a lower stop block 217 on the upper and lower sides of the swing lever 29, respectively.
In the use process, when the height of the material surface needs to be detected, the second motor drives the winding drum 26 to rotate to release the steel wire rope, the heavy hammer 22 moves downwards, and the steel wire rope 23 connected with the heavy hammer 22 bypasses the balance wheel 210 on the swing rod 29, so that the steel wire rope 23 applies a downward tension force to the swing rod 29, and the supporting force spring 211 applies an upward force to the swing rod 29, so that the swing rod 29 is in a balanced and motionless state in the movement process of the heavy hammer 22 and when the heavy hammer 22 reaches the top point. When the heavy hammer 22 contacts the material surface, the material surface gives the heavy hammer 22 an upward force, so that the heavy hammer 22 instantaneously forms a weightless state, at the moment, the original mutual balance force on the swing rod 29 is destroyed, the force applied to the swing rod 29 by the heavy hammer 22 instantaneously reduces, the swing rod 29 swings under the acting force of the supporting force spring 211, the swing rod 29 contacts a second sensor in the swinging process, when the second sensor senses that the swing rod 29 generates an electric signal due to the swinging change of the weightless state of the heavy hammer 22, the second sensor transmits the electric signal to a controller, and the controller receives the electric signal to control the second motor to reversely rotate, so as to drive the heavy hammer 22 to rise to the position of the top point. Namely, one detection is completed, the embodiment can sensitively monitor the weightlessness state of the heavy hammer 22, and timely control the second motor to drive the heavy hammer 22 to ascend, so that the second motor is prevented from being damaged due to the fact that the heavy hammer 22 is buried.
The wire rope for hanging the weight in this embodiment sequentially bypasses the guide wheel 25, the balance wheel 210 and the measuring wheel 27, and the wire rope 23 is wound in a roundabout manner due to the positions of the guide wheel 25, the balance wheel 210 and the measuring wheel 27, so that the wire rope 23 is in a tensioning state on the guide wheel 5, the balance wheel 210 and the measuring wheel 27 during the normal downward detection and the upward movement of the weight 22, and the weight 22 is stably lifted and lowered. When the weight 22 suddenly loses weight, the steel wire rope 23 between the balance wheel 210 and the measuring wheel 27 is in a loose state instantly, so that the balance wheel 210 moves upwards to detect the second sensor, at the moment, the winding drum 26 rapidly reversely tightens the steel wire rope 23, the steel wire rope 23 rapidly and stably moves under the acting force of the guide wheel 25, the weight 22 is ensured to rapidly and stably rise to enter a recovery state, and the weight 22 is rapidly and stably brought into the rising state from the weightlessness state under the action of the guide wheel 25 and the balance wheel 210, so that the shaking of the weight 22 is reduced as much as possible, the movement of the weight is stable, and the detection efficiency is high.
It is further preferred that the second sensor is a hall sensor because the hall sensor is sensitive to a magnetic field, has a simple structure, a small volume, a wide frequency response, a large output voltage variation, and a long service life. The generation and transmission of automatic electric signals are convenient to realize, so that the automatic control is realized, the Hall sensor comprises a magnet 218 arranged at the free end of the swing rod 29, and a Hall circuit board 219 arranged on the front side surface of the mounting plate 24, and a Hall semiconductor chip for detecting the position of the magnet 218 is arranged on the Hall circuit board 219.
In this embodiment, whether the heavy hammer 22 fails can be further known in time according to the swing position of the swing rod 29 sensed by the hall sensor, and if the heavy hammer 22 fails, the controller stops and overhauls in time, so that the robustness of this embodiment is further increased.
Further preferably, the measuring wheel 27 is provided with a side stopper 221 around one side of the wire rope, further preventing the wire rope from coming off the wheel in the state where the weight 22 is lost.
Further preferably, the rope passing pipe 222 is fixedly arranged at the lower end of the box body 21, an observation hole is formed in the rope passing pipe 222, an observation cover 223 for opening and closing the observation hole is arranged on the observation hole, and the observation hole is convenient for observation and maintenance of the embodiment.
Further preferably, a soot blower is disposed in the case 21, the soot blower includes a soot blowing pipe 224 fixedly disposed in the case 21, and an upper end of the soot blowing pipe 224 is bent downward. Because this embodiment is used on the feed bin, namely work under the environment that the dust is much, can not avoid entering the dust in the box 21, and the blowing pipe 224 can clear up the dust in the box, further increases the life of this embodiment.
Furthermore, the position of the weight type level gauge on the top of the conical bin has an important effect on accurately calculating the volume of powder in the bin, because a conical sinking surface is formed on the upper part of the powder surface after the powder passes through the bottom end of the bin, as shown in fig. 5, that is, the powder in the bin sinks to form a conical surface instead of a plane. Moreover, the conical sinking surface formed on the upper part of the powder is identical to the conical structure at the bottom of the bin, so that when the distance R1 between the top of the bin and the center of the circle of the weight type level gauge is in different positions, the distance H3 between the corresponding weight and the powder detected by the falling of the weight is also different, and therefore, the detection distance cannot be directly used for calculating the volume of the materials in the bin. If the radius of the bin is R0, the height of the cylindrical portion is H2, and the height of the conical portion is H1, the equivalent cylindrical height of the powder in the bin can be calculated and obtained by:it is furthermore possible to calculate that the volume of powder remaining in the silo is +.>Preferably, when the weight type level gauge is arranged at the top of the cylindrical bin, and the distance from the center of the top is half the radius of the cylindrical bin, namely r1=r0/2, the volume of the residual powder in the bin is>By the mode, the volume of the powder in the bin can be accurately calculated, the bin is arranged at one half radius of the bin, the bin top is convenient to select, the bin top is also an intermediate average position in the bin, the bin is accurately detected, otherwise, the bin is not accurately detected when the bin is too close to the edge, and the bin is not accurately detected when the bin is too close to the centerLess space is available at the roof of the bin.
Further, as shown in fig. 6, the feeding control valve includes a connection plate 32 disposed on the feeding pipe 31, and a blocking member 33 hinged to the connection plate 32, where the blocking member 33 is used for opening and closing a port of the feeding pipe 31, and the feeding control valve further includes a locking member 34 for locking the blocking member 33, where the locking member 34 acts according to an electrical signal allowing feeding or an electrical signal completing feeding, so that the blocking member 33 is locked and unlocked with respect to the feeding pipe 31.
The port of the feeding pipe 1 is plugged through the plugging piece 33 when feeding is not needed, so that the plugging of the feeding pipe 31 caused by foreign matters entering the feeding pipe 31 is prevented, and the risks that feeding is not allowed to be wrong, the feeding performance is affected by wrong feeding caused by wrong feeding of materials, and the roof is also prevented. When feeding is required, the locking piece 34 releases the locking relation between the blocking piece 33 and the feeding pipe 31 according to the action of the electric signal allowing feeding, the blocking piece 33 is manually or mechanically driven to move, the port of the feeding pipe 31 is opened for feeding, and the electric signal allowing feeding comes from the safety feeding control terminal; after the feeding is completed, the blocking member 33 is manually or mechanically driven to move to block the port of the feeding pipe 31, and the blocking member 34 locks the blocking member 33 and the feeding pipe 31 according to a feeding completion signal, wherein the feeding completion signal is from the safety feeding control terminal.
The locking piece 34 can accurately control the corresponding feeding pipe to open for feeding according to the received electric signal allowing feeding, and the risks that the feeding performance is affected by feeding errors caused by feeding the materials by the feeding pipe without permission and the roof is opened are prevented. The locking piece is with the stifled piece locking and the mode of opening for automated control, and the probability of judging the mistake is very little, causes the wrong judgement material loading to fall off the top the phenomenon probability very little to this application can also be through the feed bin that the material loading personnel's further check material loading corresponds, further guaranteed the accurate feed bin that needs the material loading of opening, error probability is 0% basically, has guaranteed the security of material loading.
Further preferably, the locking member 34 is an electronic lock, the electronic lock includes a lock body 341 and a lock catch 342, the lock catch 342 is fixedly connected to the rear side plate of the blocking member 33 through a connecting member 35, and the lock body 341 of the electronic lock is fixedly connected to a position where the rotation axis is aligned with the lock catch 342 through a lock body mounting seat 36. The locking piece of this embodiment adopts the electronic lock, and the simple structure of electronic lock can link into in the automated control circuit, receives the unlocking signal, realizes automatic unblanking.
It is further preferred that the blocking member 33 is provided with a monitoring member for monitoring the movement position of the blocking member 33. In this embodiment, the monitoring element is a travel switch 37, and the travel switch 37 is fixedly disposed on the inner side surface of the left side plate of the blocking member 33. The travel switch 37 can monitor the movement state of the blocking member 33, and can further ensure the safety of feeding, if the movement state is a state of closing the feeding pipe 31 or a state of opening the feeding pipe 31.
The further preferred embodiment further includes a baffle 39, the baffle 39 is fixedly arranged at the rear part of the blocking piece 33 and is positioned below the electronic lock, the baffle 39, the blocking piece 33, the connecting piece 35 and the lock body mounting seat 36 jointly enclose a space which is closed up and down, left and right, front and back, and the electronic lock is placed in the space, so that sundries such as dust, rainwater and the like are prevented from entering the electronic lock and damaging the electronic lock.
Further, referring to the embodiment shown in fig. 1, a bag-type dust collector 16 is further disposed on a side wall of the upper portion of the powder bin opposite to the feeding pipe 11, the feeding control terminal 14 is further electrically connected to the bag-type dust collector 16, and in the feeding process, dust generated by feeding is removed by opening the bag-type dust collector 16. Thereby further increasing the safety of the feed and reducing and avoiding the possibility of dust explosions.
Further preferably, the weight type level gauge and the rotation-resistant level gauge can be combined into a level gauge group, and the weight type level gauge and the rotation-resistant level gauge can be used in a networking manner on a plurality of bins. As shown in fig. 7, the weight type level gauge 15 and the rotation-resisting type level gauge 13 are connected in series with a common power line, namely an AC220V power line, and are further interconnected through a data line, thereby forming a level gauge group, when a plurality of bins exist, one level gauge group is arranged on the top wall of each bin, the level gauge groups are connected in parallel with the common power line, the data lines of the level gauge groups are connected to the same wireless transceiver 19, and the wireless transceiver 19 is used for communicating information with the wireless communication module of the safety feeding control terminal 14.
Further, the wireless transceiver 19 is also communicatively interconnected with a remote control terminal 18 disposed in the weigh house, the remote control terminal 18 thereby displaying the monitoring of each of the bins.
The feeding safety of a plurality of bins can be uniformly monitored in a networking mode, and the cost can be saved.
Therefore, through above-mentioned powder storehouse safety monitoring system embodiment, mainly including setting up the inlet pipe on airtight powder storehouse lateral wall upper portion, set up the feed control valve of inlet pipe bottom, and set up the charge level indicator at airtight powder storehouse lateral wall top, the charge level indicator includes and hinders rotary charge level indicator and weight formula charge level indicator, can control the feed control valve through safe material loading control terminal, this terminal is provided with multiple safety control measures such as input password, two-stage case lid, and can monitor the feed condition of feed bin through hinder rotary charge level indicator and weight formula charge level indicator, prevent to fall off the top, and can carry out accurate measurement to the powder in the storehouse, can not explode because of producing dust when still guaranteeing the feeding through setting up the sack cleaner, further strengthened fail safe nature.
The foregoing embodiments of the present invention are not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The powder bin safety monitoring system comprises a feed pipe arranged at the upper part of the side wall of a closed powder bin, a feed control valve arranged at the bottom end of the feed pipe, and a level gauge arranged at the top of the side wall of the closed powder bin, and is characterized in that,
the material level gauge comprises a rotation-resisting material level gauge and a heavy hammer material level gauge;
the rotary-resisting type bin level gauge comprises a control end and a cylindrical cover below the control end, wherein a rotary body is arranged in the cylindrical cover, the lower end of the rotary body is a bent sheet-shaped detection part, the control end comprises a first motor for driving the rotary body to rotate and a monitoring circuit for controlling the motor to rotate, the control end is arranged on the outer side of the top wall of the powder bin, the cylindrical cover penetrates through the top wall of the powder bin to enter the powder bin, when powder is input into the powder bin through the feeding pipe, the first motor in the control end drives the rotary body to rotate, the sheet-shaped detection part detects the height of the powder entering the powder bin, when the height of the powder reaches the position of the sheet-shaped detection part, the sheet-shaped detection part in a rotating state is blocked by the powder to reduce the rotating speed or blocked to stop rotating, and the feeding control end senses the rotating speed reduction or stop information of the sheet-shaped detection part and then sends a full material indication signal to close the feeding control valve to stop feeding;
the heavy hammer type level gauge comprises a box body, a controller, a heavy hammer, a steel wire rope and a wheel set, wherein the controller, the heavy hammer and the wheel set are arranged in the box body, the steel wire rope is connected with the heavy hammer, the wheel set is wound on the steel wire rope, a mounting plate is arranged in the box body, the wheel set is arranged on the rear side surface of the mounting plate and comprises a winding drum, a guide wheel and a measuring wheel, a second motor for driving the winding drum to rotate is arranged on the front side surface of the mounting plate, a balance wheel mechanism is hinged on the rear side surface of the mounting plate and comprises a swinging rod and a balance wheel, one end of the swinging rod is hinged on the mounting plate, the other end of the swinging rod is a free end and is provided with the balance wheel, the winding drum is arranged on the upper left side of the mounting plate, the guide wheel is arranged on the lower left side of the mounting plate, the balance wheel is positioned on the lower right side of the winding drum, the measuring wheel is located the left side below of balance wheel and be in the right side of leading wheel, wire rope by the reel is walked around in proper order the leading wheel the balance wheel with the measuring wheel, be provided with in the box and be used for measuring the first sensor of the number of turns of measuring wheel, still be provided with in the box and be used for detecting the second sensor of balance wheel swing state, first sensor and second sensor all with the controller electricity is connected, the controller is controlled from this the second motor is just passed or is reversed, drives the weight from this and descends or rise, the box sets up the roof outside of powder storehouse, the weight sets up the inside of powder storehouse, when the powder in the powder storehouse outwards exports, through the weight is gone out to the detection is measured remaining powder in the powder storehouse.
2. The powder bin safety monitoring system according to claim 1, further comprising a safety feeding control terminal, wherein the safety feeding control terminal is electrically connected with the feeding control valve, the rotation-resisting type level gauge and the safety feeding control terminal both comprise wireless communication modules, and the control end of the rotation-resisting type level gauge sends the full material indication signal to the safety feeding control terminal through the wireless communication modules, so that the safety feeding control terminal controls the feeding control valve to be closed.
3. The powder bin safety monitoring system according to claim 2, wherein the safety feeding control terminal comprises a box body and a box cover, a control switch and a control keyboard are arranged on the box cover, a control circuit is arranged in the box body, when the feeding control valve is started by the safety feeding control terminal, a dynamic password is required to be received in advance, and then the feeding control valve can be started by the control switch after the dynamic password is input by the control keyboard.
4. The powder bin safety monitoring system according to claim 3, wherein a second box cover is further arranged in the box body, the second box cover is hinged to the side wall of the box body, the control circuit is further contained in a cavity surrounded by the second box cover and the box body, a liquid crystal display screen is arranged on the outer side of the second box cover, a transparent display window for observing the liquid crystal display screen is correspondingly formed in the box cover, the liquid crystal display screen is electrically connected with the control circuit, and the control circuit detects the material level condition in the powder bin according to the rotation-resisting type material level meter and the weight type material level meter, dynamically displays the material level condition in the powder bin on the liquid crystal display screen, and the on-off state of the feeding control valve.
5. The powder bin safety monitoring system according to claim 4, wherein the weight level gauge is disposed at a top of a cylindrical bin and is spaced from a center of the top by a radius of one half of the cylindrical bin.
6. The powder bin safety monitoring system according to claim 5, wherein the feeding control valve comprises a connecting plate arranged on the feeding pipe, and a blocking piece hinged with the connecting plate, the blocking piece is used for opening and closing a port of the feeding pipe, the feeding valve further comprises a locking piece for locking the blocking piece, and the locking piece acts according to an electrical signal allowing feeding or an electrical signal completing feeding so as to enable the blocking piece and the feeding pipe to be locked and unlocked relatively.
7. The powder bin safety monitoring system according to claim 6, wherein a bag-type dust remover is further arranged on the side wall of the upper portion of the powder bin opposite to the feeding pipe, the feeding control terminal is further electrically connected with the bag-type dust remover, and dust generated by feeding is removed by opening the bag-type dust remover in the feeding process.
8. The powder bin safety monitoring system according to claim 7, wherein the weight type level gauge and the rotation-resisting type level gauge are connected in series with a common power line and are further connected with each other through a data line to form a level gauge group, when a plurality of bins exist, one level gauge group is arranged on the top wall of each bin, the level gauge groups are connected with the common power line in parallel, and the data lines of the level gauge groups are connected with the same wireless transceiver to communicate information with the wireless communication module of the safety feeding control terminal through the wireless transceiver.
9. The powder bin safety monitoring system of claim 8, wherein said wireless transceiver is further communicatively interconnected with a remote control terminal disposed in the weigh house, said remote control terminal thereby displaying the monitoring of each of said powder bins.
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