CN104148282A - Vibrating screen and screen cloth damage detection device thereof - Google Patents
Vibrating screen and screen cloth damage detection device thereof Download PDFInfo
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- CN104148282A CN104148282A CN201410395967.4A CN201410395967A CN104148282A CN 104148282 A CN104148282 A CN 104148282A CN 201410395967 A CN201410395967 A CN 201410395967A CN 104148282 A CN104148282 A CN 104148282A
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Abstract
The invention relates to the technical field of vibrating screens, and discloses a vibrating screen and a screen cloth damage detection device thereof. The screen cloth damage detection device comprises a first conveying channel, a second conveying channel, an overflowing channel, a filter screen and a damage signal generator, wherein the feeding end of the second conveying channel is communicated with the discharge end of the first conveying channel, the feeding end of the overflowing channel is communicated with the second conveying channel, the filter screen is arranged in the second conveying channel and located at the downstream position of the communication portion of the second conveying channel and the overflowing channel, and the damage signal generator is arranged on the overflowing channel and used for acting when the overflowing channel is in the preset overflowing state. By means of the vibrating screen and the screen cloth damage detection device thereof, when screen cloth is damaged, field staff or a control system of the vibrating screen can know in time to control the vibrating screen to be stopped in time, and therefore equipment maintenance personnel do not need to examine the screen cloth frequently and the time, the labor cost and the material cost are saved.
Description
Technical field
The present invention relates to vibratory sieve technical field, particularly a kind of vibratory sieve and sieve breakage checkout gear thereof.
Background technology
In a lot of occasions, commonly use vibratory sieve, for example, when producing dry powder and mortar, conventionally require the particle diameter of sand material to be less than predetermined value (as 5 millimeters), and when producing different types of mortar, requirement for the sand material accounting of various particle diameters is also different, thereby, conventionally need to raw sand, sieve by vibratory sieve, again the raw materials such as the sand material of different-grain diameter and cement are carried out to accurate proportioning, then mix and produce qualified mortar.
Shown in Figure 1, common vibratory sieve 100' generally comprises screen box 2', screen cloth 3', supporting arrangement 5', vibrator (not shown), sieve bottom discharge pipe 8' and defective material discharge nozzle 9' etc. at present, wherein: screen box 2' is arranged on bracing or strutting arrangement 5', screen cloth 3' is arranged in screen box 2', and screen cloth 3' and screen box 2' are all tilting state, the number of screen cloth 3' can be one deck, can be also two-layer more than, situation shown in Fig. 1 is one deck; The bottom of screen box 2' is formed with the lower conveying passage 6' of sieve, the discharging opening 7'(of the lower conveying passage 6' of sieve is also referred to as sieve lower discharge port) be communicated in sieve bottom discharge pipe 8', defective material mouth on the sieve of screen cloth 3' (also referred to as defective material discharging opening) 10' is communicated in defective material discharge nozzle 9'.
In the course of the work, screen box 2' vibrates under the effect of vibrator, drive screen cloth 3' vibration simultaneously, sand material enters in screen box from the sand inlet 1' of screen box 2' high level, after the sieve aperture screening of screen cloth 3', coarse sand (its particle diameter is greater than screen size) is defective material mouth 10' and defective material discharge nozzle 9' discharge from sieving, fine sand (its particle diameter is less than screen size) drops on the lower conveying passage 6' of sieve, from sieve lower discharge port 7' and sieve bottom discharge pipe 8', discharge afterwards, coarse sand and the fine sand of discharging can enter respectively next procedure (as coarse sand can be back to broken link, fine sand can enter washed-out sand or select powder link), dust collecting system 4' can collect the dust that vibratory sieve 100' produces in screening process, prevent from emitting ash.
As everyone knows, the screen cloth of vibratory sieve inside belongs to consumable accessory, and screen cloth will damage in use for some time, plant maintenance personnel need to check screen cloth often, finding to damage needs to change in time, in order to avoid affect the screening effect of sand material, these those skilled in the art is accustomed to.Yet; present inventor finds in realizing process of the present invention: in the prior art; plant maintenance personnel determine whether to check screen cloth according to subjective experience conventionally; or check at set intervals screen cloth once, while checking, need first vibratory sieve to be shut down at every turn; relend to help related tool, open or remove corresponding component and be close to screen cloth and examine; if do not find, screen cloth damages, and need to again return to original state, to treat that check next time.
Hence one can see that, and the frequent inspection of screen cloth has brought larger workload to plant maintenance personnel, wastes time and energy; And during checking, vibratory sieve need to be shut down, reduce the service efficiency of vibratory sieve.How overcoming this deficiency, is the direction of present inventor's effort always.
Summary of the invention
In view of this; inventor has realized the present invention; aim to provide a kind of sieve breakage checkout gear for vibratory sieve, a kind of vibratory sieve and another kind of vibratory sieve; so that can be when there is not breakage in screen cloth; meet the normal use needs of vibratory sieve; and when there is breakage in screen cloth; the control system of Field Force or vibratory sieve can be learnt in time; and time control vibratory sieve processed is shut down; without plant maintenance personnel, frequently check screen cloth like this; effectively saved the time, man power and material's cost, improved the service efficiency of vibratory sieve.
Particularly, the described sieve breakage checkout gear for vibratory sieve comprises the first conveying passage, the second conveying passage, flash passage, filter screen and breakage signal generator, wherein: the feed end of described the second conveying passage is communicated in the discharge end of described the first conveying passage, the feed end of described flash passage is communicated in described the second conveying passage, and described filter screen is arranged in described the second conveying passage and is positioned at the downstream that is communicated with position of described the second conveying passage and described flash passage; Described breakage signal generator is arranged on described flash passage, for moving during in predetermined flash state at described flash passage.
Further, under the first situation, described breakage signal generator is the level-sensing device that is arranged at described flash passage discharge end; Or, under second case, described breakage signal generator comprises baffle plate and breakage signal output block, and described baffle plate is rotatably arranged at the discharge end of described flash passage, and described breakage signal output block is for moving when rotating predetermined angular at described baffle plate.
Further, under described second case, described breakage signal output block is approach switch, limit switch or baffle angle detection part, and described approach switch, described limit switch or described baffle angle detection part are fixed on the position of contiguous described baffle plate on described flash passage.
Further, be also fixedly installed ennation on described baffle plate, described ennation is when described baffle plate rotation predetermined angular in the detection range in described approach switch or described baffle angle detection part or touch described limit switch.
Further, the feed end of described flash passage is provided with striker plate in the position of contiguous described the first conveying passage.
Further, described the second conveying passage comprises the first conveying pipeline, the first flexible link and the second conveying pipeline, the feed end of described the first conveying pipeline is the feed end of described the second conveying passage, the discharge end of described the first conveying pipeline is communicated in the feed end of described the second conveying pipeline by described the first flexible link, the feed end of described flash passage is communicated in described the first conveying pipeline, and described filter screen is arranged in described the first conveying pipeline; And/or, described flash passage comprises the first flash pipe, the second flexible link and the second flash pipe, the feed end of described the first flash pipe is the feed end of described flash passage, the discharge end of described the first flash pipe is communicated in the feed end of described the second flash pipe by described the second flexible link, described breakage signal generator is arranged on described the second flash pipe.
Particularly, this a kind of vibratory sieve comprises screen box and is arranged at least one deck screen cloth in described screen box, also comprise the sieve breakage checkout gear described in above-mentioned any one, wherein: the feed end of the first conveying passage of described sieve breakage checkout gear is communicated in the sieve lower discharge port of described screen box, and the filter opening size of described filter screen is than the large predetermined value of the screen size of bottom screen cloth; Or the feed end of the first conveying passage of described sieve breakage checkout gear is communicated in the defective material discharging opening of the wherein one deck screen cloth except top layer screen cloth, the filter opening size of described filter screen is than the large predetermined value of screen size of the last layer screen cloth of described wherein one deck screen cloth
Further, described vibratory sieve also comprises control module and/or alarm unit, wherein: described control module, for when described breakage signal generator moves, is controlled described vibratory sieve and shut down; Described alarm unit, for when described breakage signal generator moves, sends alarm signal.
Particularly, described another kind of vibratory sieve comprises screen box and is arranged at least one deck screen cloth in described screen box, it is characterized in that, also comprise the first conveying passage, the second conveying passage, flash passage, filter screen and breakage signal generator, wherein: a side of described filter screen is connected in the exit side of the sieve bottom discharge passage of described screen box, the opposite side of described filter screen connects filter screen defective material discharging opening, the feed end correspondence of described the first conveying passage is arranged at the below of described filter screen, the discharge end of described the first conveying passage is communicated in the feed end of described the second conveying passage, the feed end of described flash passage is communicated in described filter screen defective material discharging opening, described breakage signal generator is arranged on described flash passage, for moving during in predetermined flash state at described flash passage, the filter opening size of described filter screen is than the large predetermined value of the screen size of bottom screen cloth.
Further, state the second conveying passage and comprise the first conveying pipeline, the first flexible link and the second conveying pipeline, the feed end of described the first conveying pipeline is the feed end of described the second conveying passage, and the discharge end of described the first conveying pipeline is communicated in the feed end of described the second conveying pipeline by described the first flexible link; And/or, described flash passage comprises the first flash pipe, the second flexible link and the second flash pipe, the feed end of described the first flash pipe is the feed end of described flash passage, the discharge end of described the first flash pipe is communicated in the feed end of described the second flash pipe by described the second flexible link, described breakage signal generator is arranged on described the second flash pipe.
While adopting a kind of sieve breakage checkout gear for vibratory sieve of the present invention or a kind of vibratory sieve, if there is not breakage in certain layer of screen cloth corresponding on vibratory sieve, the particle diameter of sand material after the sieve of this layer of screen cloth (the sand material of exporting from the defective material discharging opening of the sieve lower discharge port of vibratory sieve or the lower screen of this layer of screen cloth) is less, thereby can be provided with by the first conveying passage and inside the second conveying passage discharge of filter screen (its filter opening size is than the large predetermined value of the screen size of this layer of screen cloth), to meet the normal use needs of vibratory sieve, if this layer of screen cloth occurs damaged, sand material compared with small particle diameter and greater particle size (larger than filter opening size) passes this layer of screen cloth from breakage, when these sand material are flowed through filter screen in the second conveying passage, filtration because of filter screen, the sand material of greater particle size can build up, when reaching a certain amount of, the sand material gathering will enter in flash passage and overflow, now, the action of breakage signal generator, outwards send the signal that characterizes sieve breakage, the control system of Field Force or vibratory sieve can learn that breakage appears in this layer of screen cloth in time like this, and control in time vibratory sieve shutdown and overhaul.
While adopting another kind of vibratory sieve of the present invention, if there is not breakage in the bottom screen cloth of vibratory sieve, after the sieve of bottom screen cloth, the particle diameter of sand material is less, thereby can through sieve bottom discharge passage and in its filter opening size of filter screen than the large predetermined value of the screen size of this layer of screen cloth) filtration after, from the first conveying passage and the second conveying passage, discharge, to meet the normal use needs of vibratory sieve, if bottom screen cloth occurs damaged, sand material compared with small particle diameter and greater particle size (larger than filter opening size) passes the bottom screen cloth from damaged, when these sand material are flowed through filter screen, filtration because of filter screen, the sand material of greater particle size can build up formation defective material, when reaching a certain amount of, the sand material gathering will enter in flash passage and overflow, now, the action of breakage signal generator, outwards send the signal that characterizes sieve breakage, the control system of Field Force or vibratory sieve can learn that breakage appears in bottom screen cloth in time like this, and control in time vibratory sieve shutdown and overhaul.
From the foregoing; compared with prior art; a kind of sieve breakage checkout gear for vibratory sieve of the present invention, a kind of vibratory sieve or another kind of vibratory sieve; all can be when there is not breakage in screen cloth; meet the normal use needs of vibratory sieve; and when there is breakage in screen cloth; can make the control system of Field Force or vibratory sieve learn in time; and time control vibratory sieve shutdown processed is overhauled; without plant maintenance personnel, frequently check screen cloth like this; effectively saved the time, man power and material's cost, improved the service efficiency of vibratory sieve.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing a kind of vibratory sieve;
A kind of vibratory sieve that Fig. 2 provides for the embodiment of the present invention and a kind of structural representation of sieve breakage checkout gear vibratory sieve;
Fig. 3 is the enlarged diagram of I part in sieve breakage checkout gear shown in Fig. 2;
Fig. 4 is the structural representation of sieve breakage checkout gear shown in Fig. 2 when flash state;
The structural representation of a kind of vibratory sieve that Fig. 5 provides for another embodiment of the present invention.
Part label declaration in figure:
100 vibratory sieves
1 sand inlet
2 screen boxs
3 screen clothes
4 sieve bottom discharge passages
5 first conveying passages
6 screen cloth defective material tapping channels
7 second conveying passages
8 filter screens
9 flash passages
10 striker plates
11 baffle plates
12 rotating shafts
13 ennations
14 approach switchs
15 fixed bars
17 fine sands
18 coarse sands
20 level-sensing devices
The specific embodiment
It should be pointed out that in this part to be only the explanation to specific embodiment to the description of concrete structure and description order, should not be considered as that protection scope of the present invention is had to any restriction.In addition,, under the situation of not conflicting, embodiment and the feature in embodiment in this part can combine mutually.
Please refer to accompanying drawing, below in conjunction with accompanying drawing, various embodiments of the invention are elaborated.The direction of arrow in figure represents the flow direction of material or sand material.
Fig. 2 shows a kind of vibratory sieve of the embodiment of the present invention, shows a kind of sieve breakage checkout gear of the embodiment of the present invention simultaneously.The vibratory sieve 100 of the embodiment of the present invention can comprise screen box 2, be arranged at screen cloth 3 in screen box 2 and the sieve breakage checkout gear of the embodiment of the present invention, detailed structure about vibratory sieve 100 except sieve breakage checkout gear or description, can, referring to the related content of prior art, at this, no longer launch.
Shown in Fig. 3 and Fig. 4, the sieve breakage checkout gear of the embodiment of the present invention can comprise the first conveying passage 5, the second conveying passage 7, flash passage 9, filter screen 8 and breakage signal generator.
Wherein, the feed end of the second conveying passage 7 is communicated in the discharge end of the first conveying passage 5, the feed end of flash passage 9 is communicated in the second conveying passage 7, and filter screen 8 is arranged in the second conveying passage and is positioned at the downstream that is communicated with position of the second conveying passage 7 and flash passage 9.
Breakage signal generator can comprise baffle plate 11, ennation 13 and breakage signal output block, and preferably, in the present embodiment, breakage signal output block is approach switch 14.Baffle plate 11 is rotatably arranged at the discharge end of flash passage 9 by rotating shaft 12, the bearing of trend of rotating shaft 12 is substantially vertical with the discharging direction of flash passage 9 discharge ends, ennation 13 is fixing with baffle plate 11, ennation 13 and baffle plate 11 can be positioned on the both direction of rotating shaft 12 and become predetermined angular (this angle is determined according to the concrete situation of implementing), approach switch 14 is fixed on the position of contiguous baffle plate 12 on flash passage 9 by fixed bar 15, when baffle plate 11 rotates predetermined angular, ennation 13 also rotates predetermined angular and is positioned at the detection range of approach switch, signal X is sent in now approach switch 14 actions.
When other parts of this sieve breakage checkout gear and this vibratory sieve 100 are assembled, the feed end of the first conveying passage 5 can be communicated in to the sieve lower discharge port of vibratory sieve 100, can make the first conveying passage 5 and the second conveying passage 7 substantially on same bearing of trend, and this bearing of trend can be arranged as to vertical direction substantially, so that sand material is realized nature discharging under the effect of gravity; In addition, can make to become predetermined angle between the feedstock direction of flash passage 9 or bearing of trend and the second conveying passage 7, for example this predetermined angle can, in 90 °, be so also convenient to flash passage and can realize nature flash; In addition, can adopt corresponding filter screen 8, the filter opening size of this filter screen 8 is than the large predetermined value of the screen size of the screen cloth of vibratory sieve 100 3, for example, the former can be slightly larger than the latter, or the former can be larger 5% to 10% than the latter, in order to guarantee the filter capacity of 8 pairs of coarse sands of filter screen, the filter opening size of filter screen 8 can be adjusted according to actual needs.
The operation principle of vibratory sieve and the sieve breakage checkout gear of the embodiment of the present invention is described below in conjunction with Fig. 2 to Fig. 4 and concrete scene simultaneously, for convenience of explanation, the defective material discharging opening that also shows the screen cloth 3 of vibratory sieve 100 in Fig. 2 is connected with screen cloth defective material tapping channel 6:
In the course of the work, if the screen cloth 3 in screen box 2 does not occur damaged, screen box 2 vibrates under the effect of vibrator (Fig. 2 is not shown), drive screen cloth 3 vibrations simultaneously, the sand material that raw sand forms after broken link enters in screen box 2 from the sand inlet 1 of screen box 2 high levels, after the sieve aperture screening of screen cloth 3, coarse sand (its particle diameter is greater than the screen size of screen cloth 3) is through the defective material discharging opening of screen cloth and from 6 discharges of screen cloth defective material tapping channel, fine sand (i.e. sand material after the sieve of screen cloth 3, its particle diameter is less than or equal to the screen size of screen cloth 3) drop on the sieve bottom discharge passage 4 of inclination, and through sieve lower discharge port, the first conveying passage 5 enters into the second conveying passage 7, because the filter opening size of the filter screen 8 in the second conveying passage 7 is than the large predetermined value of the screen size of screen cloth 3, these fine sands will be discharged through filter screen 8 and from the second conveying passage 7, the coarse sand of discharging from screen cloth defective material tapping channel 6 can be back to broken link, the fine sand of discharging from the second conveying passage 7 can enter post processing link, for example enter sand washer or powder concentrator is processed, now, do not have sand material to flow through in flash passage 9, baffle plate 11 is in closed condition.
Shown in Fig. 4, if it is damaged that the screen cloth of vibratory sieve 33 occurs, compared with the sand material of small particle diameter and greater particle size, be that at least part of fine sand 17 and coarse sand 18 pass the screen cloth from damaged 3, these sand material are through sieve bottom discharge passage 4, sieve lower discharge port, the first conveying passage 5 enters into the second conveying passage 7, under the filtration of filter screen 8, fine sand 17 can be crossed filter screen 8 and discharge from the second conveying passage 7, but coarse sand 18 will be stopped by filter screen 8 and build up, when reaching a certain amount of, the coarse sand 18 gathering overflows entering in flash passage 9 and from the discharge end of flash passage 9, the coarse sand 18 overflowing is washed baffle plate 11 open makes baffle plate 11 and ennation 13 rotate around rotating shaft 12, when ennation 13 enters the surveyed area of approach switch 12, approach switch 12 actions, send the signal X that characterizes screen cloth 3 breakages, the control system of Field Force or vibratory sieve 100 can learn that breakage appears in screen cloth 3 in time like this, and control in time vibratory sieve 100 shutdown and overhaul.
From the foregoing; compared with prior art; the vibratory sieve of above-described embodiment and sieve breakage checkout gear thereof; can be when there is not breakage in screen cloth 3; meet normal use (normal discharging) needs of vibratory sieve 100; and when there is breakage in screen cloth 3; can make the control system of Field Force or vibratory sieve learn in time; and time control vibratory sieve shutdown processed is overhauled; without plant maintenance personnel, frequently check screen cloth like this; effectively saved the time, man power and material's cost, improved the service efficiency of vibratory sieve 100.
In specific implementation process; approach switch 14 can connect or integrated corresponding warning device (alarm unit); while sending signal X with convenient approach switch 14; this warning device sends alarm signal; the type of alarm of this warning device can be that instrument warning, audible alarm or light are reported to the police; when Field Force receives alarm signal, can in time vibratory sieve be shut down like this.Or; preferably, vibratory sieve can comprise control module (can be integrated in the control system of vibratory sieve 100), and approach switch 14 is connected with this control module signal; this control module can, when receiving signal X from approach switch 14, be controlled vibratory sieve 100 and shut down.Certainly, this two schemes also can be combined with, to realize the autostop of vibratory sieve 100 when sending alarm signal.It should be noted that, in specific implementation process, control module can adopt relay, PLC (Programmable Logic Controller, programmable logic controller (PLC)) etc. to build, and warning device can adopt instrument alarm, buzzer or indicator lamp display etc.
In addition, shown in Fig. 2 and Fig. 4, in specific implementation process, preferably, feed end at flash passage 9 is provided with striker plate 10 in the position of contiguous the first conveying passage 5, the conveying direction of this striker plate 10 and the first conveying passage 5 or the second conveying passage 8 can form predetermined angular (as acute angle), like this in the environment of vibration, from the sand material of the first conveying passage 5 outputs, can surprisingly not fall into flash passage 9, thereby can avoid occurring the phenomenon of damaged wrong report, can avoid like this approach switch 13 when screen cloth 3 is not damaged, to send signal X.
Shown in Fig. 5, the vibratory sieve 100 that another embodiment of the present invention provides can comprise screen box 2, be arranged at screen cloth 3, the first conveying passage 5, the second conveying passage 7, flash passage 9, filter screen 8 and breakage signal generator in screen box 2.
Wherein, a side of filter screen 8 is connected in the exit side of the sieve bottom discharge passage 4 of screen box 2, and the opposite side of filter screen 8 connects filter screen defective material discharging opening 81; From another angle, in existing vibratory sieve, the exit side of sieve bottom discharge passage extends to sieve lower discharge port always, but in the present embodiment, the latter end of sieve bottom discharge passage 4 is substituted by filter screen 8, and sieve lower discharge port has also become filter screen defective material discharging opening 81.The feed end correspondence of the first conveying passage 5 is arranged at the below of filter screen 8, and the sand material through filter screen 8 can enter into the first conveying passage 5.The feed end of flash passage 9 is communicated in filter screen defective material discharging opening 81.In embodiments of the present invention, breakage signal generator is preferably level-sensing device 20, level-sensing device 20 is arranged on flash passage 9, level-sensing device 20 can flash passage 9 during in predetermined flash state action send signal, for example, send material level information warning or alarm signal, or send to the control system of vibratory sieve the signal that characterizes screen cloth 8 breakages.The filter opening size of filter screen 8 is than the large predetermined value of the screen size of screen cloth 3, for example, the former can be slightly larger than the latter, or the former can be than the latter large 5% to 10%, in order to guarantee the filter capacity of 8 pairs of coarse sands of filter screen, the filter opening size of filter screen 8 can be adjusted according to actual needs.
The operation principle that the vibratory sieve of another embodiment of the present invention is described below in conjunction with Fig. 5 and concrete scene simultaneously, for convenience of explanation, the defective material discharging opening that also shows the screen cloth 3 of vibratory sieve 100 in Fig. 5 is connected with screen cloth defective material tapping channel 6:
In the course of the work, if the screen cloth 3 in screen box 2 does not occur damaged, screen box 2 vibrates under the effect of vibrator (Fig. 5 is not shown), drive screen cloth 3 vibrations simultaneously, the sand material that raw sand forms after broken link enters in screen box 2 from the sand inlet 1 of screen box 2 high levels, after the sieve aperture screening of screen cloth 3, coarse sand (its particle diameter is greater than the screen size of screen cloth 3) is through the defective material discharging opening of screen cloth 3 and from 6 discharges of screen cloth defective material tapping channel, fine sand (i.e. sand material after the sieve of screen cloth 3, its particle diameter is less than or equal to the screen size of screen cloth 3) drop on the sieve bottom discharge passage 4 and filter screen 8 of inclination, because the filter opening size of filter screen 8 is than the large predetermined value of the screen size of screen cloth 3, these fine sands will be by filter screen 8, and discharge through the first conveying passage 5 and from the second conveying passage 7, the coarse sand of discharging from screen cloth defective material tapping channel 6 can be back to broken link, the fine sand of discharging from the second conveying passage 7 can enter post processing link, for example enter sand washer or powder concentrator is processed, now, filter screen defective material discharging opening 81 does not have sand material to flow out, and does not have sand material to flow through in flash passage 9, and level-sensing device 20 does not detect flash state or material level state, thereby not action.
If it is damaged that the screen cloth of vibratory sieve 33 occurs, compared with the sand material of small particle diameter and greater particle size, be that at least part of fine sand and coarse sand pass the screen cloth from damaged 3, these sand material are when sieve bottom discharge passage 4 and filter screen 8, under the filtration of filter screen 8, fine sand can be crossed filter screen 8 and discharge from the second conveying passage 7 through the first conveying passage 5, but coarse sand will be as filter screen 8 defective materials from 81 outputs of filter screen defective material discharging opening, and overflow from the discharge end of flash passage 9, now level-sensing device 20 detects overflow situation or material level state, send the signal X that characterizes screen cloth 3 breakages, the control system of Field Force or vibratory sieve 100 can learn that breakage appears in screen cloth 3 in time like this, and control in time vibratory sieve 100 shutdown and overhaul.
From the foregoing; compared with prior art; the vibratory sieve of above-mentioned another embodiment can be when there is not breakage in screen cloth 3; meet normal use (normal discharging) needs of vibratory sieve 100; and when there is breakage in screen cloth 3; can make the control system of Field Force or vibratory sieve learn in time; and time control vibratory sieve shutdown processed is overhauled; without plant maintenance personnel, frequently check screen cloth like this; effectively saved the time, man power and material's cost, improved the service efficiency of vibratory sieve 100.
It should be noted that, on the basis of above-mentioned various embodiment and various optimal way or the specific embodiment, for the vibration that the reduces vibratory sieve impact on normal conveying or flash, avoid the conduction effect of shaker vibration, reduce uncertain, shown in Fig. 2 and Fig. 5, preferably, the second conveying passage 7 can comprise the first conveying pipeline 71, the first flexible link 72 and the second conveying pipeline 73, the feed end of the first conveying pipeline 71 is the feed end of the second conveying passage 7, the discharge end of the second conveying pipeline 73 is the discharge end of the second conveying passage 7, the discharge end of the first conveying pipeline 71 is communicated in the feed end of the second conveying pipeline 73 by the first flexible link 72, for the embodiment shown in Fig. 2, the feed end of flash passage 9 can be communicated in the first conveying pipeline 71, and filter screen 8 can be arranged in the first conveying pipeline 71.
Flash passage 9 can comprise the first flash pipe 91, the second flexible link 92 and the second flash pipe 93, the feed end of the first flash pipe 91 is the feed end of flash passage 9, the discharge end of the second flash pipe 93 is the discharge end of flash passage 9, the discharge end of the first flash pipe 9 is communicated in the feed end of the second flash pipe 93 by the second flexible link 92, breakage signal generator can be arranged on the second flash pipe 93.
In addition, screen cloth defective material tapping channel 6 can comprise the first discharge nozzle 61, the 3rd flexible link 62 and the second discharge nozzle 63, the feed end of the first discharge nozzle 61 is the feed end of screen cloth defective material tapping channel 6, the discharge end of the first discharge nozzle 61 is communicated in the feed end of the second discharge nozzle 63 by the 3rd flexible link 62, the discharge end of the second discharge nozzle 63 is the discharge end of screen cloth defective material tapping channel 6.During concrete enforcement, aforementioned each flexible link can adopt rubber connector etc., as long as can realize the isolation of vibration.
It should be noted that, in embodiment corresponding to Fig. 2, breakage signal generator comprises baffle plate 11 and breakage signal output block, and breakage signal output block is approach switch 14, in embodiment corresponding to Fig. 5, breakage signal generator is level-sensing device 20, but be not limited to this, in embodiment corresponding to Fig. 2, breakage signal generator also can adopt level-sensing device, correspondingly, in embodiment corresponding to Fig. 5, breakage signal generator also can adopt baffle plate 11 and as the approach switch 14 of breakage signal output block; In addition, under other situations, breakage signal output block also can adopt other forms, for example, also can adopt limit switch or baffle angle detection part, when baffle plate 11 rotates predetermined angular, this limit switch action (for example, by ennation 13 touching limit switches) can be sent alarm signal or vibratory sieve is shut down, and this baffle angle detection part sends the signal that characterizes sieve breakage; In addition, ennation 13 the timely response that can facilitate breakage signal output block is set, but under other situations, and be not exclusively limited to this version.
It should be noted that, in above-mentioned various embodiment, all with vibratory sieve 100, to there is one deck screen cloth 3 and describe, but in other embodiments, if vibratory sieve 100 has two-layer above screen cloth, also can realize corresponding function of the present invention, in addition, the situation for vibratory sieve 100 with two-layer above screen cloth, the sieve breakage checkout gear of above-described embodiment also can be arranged at other positions of vibratory sieve 100, the feed end of the first conveying passage 5 of sieve breakage checkout gear can be communicated in to the defective material discharging opening of the wherein one deck screen cloth except top layer screen cloth, make the filter opening size of filter screen than the large predetermined value of screen size of the last layer screen cloth of described wherein one deck screen cloth, can detect the damaged situation of this last layer screen cloth like this, and the defective material that can meet when not there is breakage is carried instructions for use.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a sieve breakage checkout gear, for vibratory sieve (100), it is characterized in that, described sieve breakage checkout gear comprises the first conveying passage (5), the second conveying passage (7), flash passage (9), filter screen (8) and breakage signal generator, wherein:
The feed end of described the second conveying passage (7) is communicated in the discharge end of described the first conveying passage (5), the feed end of described flash passage (9) is communicated in described the second conveying passage (7), and described filter screen (8) is arranged in described the second conveying passage (7) and is positioned at the downstream that is communicated with position of described the second conveying passage (7) and described flash passage (9); It is upper that described breakage signal generator is arranged at described flash passage (9), for moving during in predetermined flash state at described flash passage (9).
2. sieve breakage checkout gear as claimed in claim 1, is characterized in that, under the first situation, described breakage signal generator is for being arranged at the level-sensing device (20) of described flash passage (9) discharge end; Or, under second case, described breakage signal generator comprises baffle plate (11) and breakage signal output block, described baffle plate (11) is rotatably arranged at the discharge end of described flash passage (9), and described breakage signal output block is for moving when rotating predetermined angular at described baffle plate (11).
3. sieve breakage checkout gear as claimed in claim 2, it is characterized in that, under described second case, described breakage signal output block is approach switch (14), limit switch or baffle angle detection part, and described approach switch (14), described limit switch or described baffle angle detection part are fixed on the position of the upper contiguous described baffle plate of described flash passage (9) (11).
4. sieve breakage checkout gear as claimed in claim 3, it is characterized in that, on described baffle plate (11), be also fixedly installed ennation (13), described ennation (13) is when described baffle plate (11) rotation predetermined angular in the detection range in described approach switch (14) or described baffle angle detection part or touch described limit switch.
5. the sieve breakage checkout gear as described in claim 1 to 4 any one, is characterized in that, the feed end of described flash passage (9) is provided with striker plate (10) in the position of contiguous described the first conveying passage (5).
6. the sieve breakage checkout gear as described in claim 1 to 4 any one, it is characterized in that, described the second conveying passage (7) comprises the first conveying pipeline (71), the first flexible link (72) and the second conveying pipeline (73), the feed end of described the first conveying pipeline (71) is the feed end of described the second conveying passage (7), the discharge end of described the first conveying pipeline (71) is communicated in the feed end of described the second conveying pipeline (73) by described the first flexible link (72), the feed end of described flash passage (9) is communicated in described the first conveying pipeline (71), described filter screen (8) is arranged in described the first conveying pipeline (71), and/or
Described flash passage (9) comprises the first flash pipe (91), the second flexible link (92) and the second flash pipe (93), the feed end of described the first flash pipe (91) is the feed end of described flash passage (9), the discharge end of described the first flash pipe (91) is communicated in the feed end of described the second flash pipe (92) by described the second flexible link (92), described breakage signal generator is arranged on described the second flash pipe (93).
7. a vibratory sieve (100), comprise screen box (2) and be arranged at least one deck screen cloth (3) in described screen box (2), it is characterized in that, also comprise the sieve breakage checkout gear described in claim 1 to 6 any one, wherein: the feed end of the first conveying passage (5) of described sieve breakage checkout gear is communicated in the sieve lower discharge port of described screen box (2), and the filter opening size of described filter screen (8) is than the large predetermined value of the screen size of bottom screen cloth; Or, the feed end of the first conveying passage (5) of described sieve breakage checkout gear is communicated in the defective material discharging opening of the wherein one deck screen cloth except top layer screen cloth, and the filter opening size of described filter screen (8) is than the large predetermined value of screen size of the last layer screen cloth of described wherein one deck screen cloth.
8. vibratory sieve as claimed in claim 7, is characterized in that, described vibratory sieve also comprises control module and/or alarm unit, wherein: described control module, for when described breakage signal generator moves, is controlled described vibratory sieve (100) and shut down; Described alarm unit, for when described breakage signal generator moves, sends alarm signal.
9. a vibratory sieve, comprise screen box and be arranged at least one deck screen cloth in described screen box, it is characterized in that, also comprise the first conveying passage (5), the second conveying passage (7), flash passage (9), filter screen (8) and breakage signal generator, wherein:
One side of described filter screen (8) is connected in the exit side of the sieve bottom discharge passage (4) of described screen box (2), the opposite side of described filter screen (8) connects filter screen defective material discharging opening (81), the feed end correspondence of described the first conveying passage (5) is arranged at the below of described filter screen (8), the discharge end of described the first conveying passage (5) is communicated in the feed end of described the second conveying passage (7), the feed end of described flash passage (9) is communicated in described filter screen defective material discharging opening (81), described breakage signal generator is arranged on described flash passage (9), for moving during in predetermined flash state at described flash passage (9), the filter opening size of described filter screen (8) is than the large predetermined value of the screen size of bottom screen cloth.
10. vibratory sieve as claimed in claim 9, it is characterized in that, described the second conveying passage (7) comprises the first conveying pipeline (71), the first flexible link (72) and the second conveying pipeline (73), the feed end of described the first conveying pipeline (71) is the feed end of described the second conveying passage (7), and the discharge end of described the first conveying pipeline (71) is communicated in the feed end of described the second conveying pipeline (73) by described the first flexible link (72); And/or
Described flash passage (9) comprises the first flash pipe (91), the second flexible link (92) and the second flash pipe (93), the feed end of described the first flash pipe (91) is the feed end of described flash passage (9), the discharge end of described the first flash pipe (91) is communicated in the feed end of described the second flash pipe (93) by described the second flexible link (92), described breakage signal generator is arranged on described the second flash pipe (93).
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| CN201410395967.4A CN104148282B (en) | 2014-08-13 | 2014-08-13 | Vibrosieve and sieve breakage detection device thereof |
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| CN201410395967.4A CN104148282B (en) | 2014-08-13 | 2014-08-13 | Vibrosieve and sieve breakage detection device thereof |
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| CN111366173A (en) * | 2020-03-17 | 2020-07-03 | 熊朝柱 | Method for detecting damage of screen of vibrating screen |
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