CN111924582A - Dust removal system for transfer point of belt conveyor - Google Patents
Dust removal system for transfer point of belt conveyor Download PDFInfo
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- CN111924582A CN111924582A CN202010948586.XA CN202010948586A CN111924582A CN 111924582 A CN111924582 A CN 111924582A CN 202010948586 A CN202010948586 A CN 202010948586A CN 111924582 A CN111924582 A CN 111924582A
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- dust
- electrostatic
- belt conveyor
- guide chute
- air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
- B65G69/181—Preventing escape of dust by means of sealed systems
- B65G69/182—Preventing escape of dust by means of sealed systems with aspiration means
Abstract
The application relates to a belt conveyor reprinting point dust pelletizing system belongs to belt conveyor technical field. The application provides a belt conveyor transfer point dust removal system, which comprises an unpowered dust removal device, wherein the unpowered dust removal device comprises a guide chute, a tail box, a skirt edge sealing rubber and a dust suppression curtain assembly; the electrostatic dust collector is arranged at the position, close to the outlet, of the guide chute and comprises a plurality of electrostatic dust collector units, the electrostatic dust collector units are vertically arranged in parallel, an air passing channel is connected between the electrostatic dust collector and the guide cavity, the bottom of the air passing channel is communicated with the guide cavity, the upper part of the air passing channel is communicated with air inlets at the bottoms of the electrostatic dust collector units, and an open air outlet is formed in the top of each electrostatic dust collector unit; the control device is used for controlling the electrostatic dust removal device to perform electrostatic adsorption intermittently in turn. The belt conveyor transfer point dust removal system can realize safe, reliable and efficient dust removal at the transfer point.
Description
Technical Field
The application relates to the technical field of belt conveyors, in particular to a dust removal system for a transfer point of a belt conveyor.
Background
The material at the transfer point of the belt conveyor is introduced onto the conveying belt of the conveyor through the chute under the action of gravity. The induced wind is generated during the falling process of the chute. Meanwhile, a large amount of dust can be generated due to impact in the process that the materials fall onto the conveying belt from the chute, and the dust can form a large amount of raised dust near the transfer point under the action of induced wind. These fugitive dusts cause serious dust pollution to production plants and the surrounding environment. Meanwhile, the dust causes damage to running equipment and harm to the body of field workers.
At present, common methods for relieving the dust emission phenomenon of the transfer point of the belt conveyor comprise the steps of spraying dust removal in a lengthened guide chute, spraying dust removal in the guide chute, additionally arranging a wind guide pipe bag-type dust remover at the dust emission part and the like. However, the lengthened material guide chute cannot reduce the wind speed in the material guide chute to zero speed, and dust overflows from the outlet of the material guide chute, so that the problem of dust flying at the outlet of the material guide chute is difficult to eradicate. The dust removal mode that installs water additional in the baffle box and spray dust removal needs a large amount of water, and the water spout requires high to quality of water, and later stage operation what maintenance cost is very high and the degree of difficulty is big. The dust removal mode of additionally arranging the air guide pipe at the dust raising position of the transfer point of the belt conveyor requires a pipeline to convey airflow with dust, and the pipeline can be blocked after long-term use; furthermore, as the air flow flows through the pipeline and the cloth bag of the dust removal chamber, the energy consumption is high, the dust in the cloth bag needs to be removed manually at regular intervals, the cloth bag is used as a dust filter, danger is easy to occur when fire coal passes through, and the dust box is a closed space and also has potential safety hazards.
Disclosure of Invention
Therefore, the application provides a belt conveyor reprints some dust pelletizing system, combines unpowered dust collector and electrostatic precipitator device, can high-efficient dust removal, and good reliability.
The embodiment of the application provides a belt conveyor reprints some dust pelletizing system, includes: the unpowered dust removal device comprises a guide chute, a tail box, skirt edge sealing rubber and a dust suppression curtain assembly; the guide chute is used for covering the upper surface of the belt conveyor and forming a guide cavity with two open ends together with the upper surface of the belt conveyor, and a first flaring is arranged on the top wall of the guide chute close to the inlet and corresponds to a blanking point of the belt conveyor; the guide chute seals a gap between the guide chute and the belt through the tail box and the skirt edge sealing rubber, and the dust suppression curtain assembly reduces the speed of induced wind generated by a blanking point of the belt conveyor; the electrostatic dust collection device is arranged at the position, close to the outlet, of the guide chute and comprises a plurality of electrostatic dust collector units, the electrostatic dust collector units are vertically arranged in parallel, an air passing channel is connected between the electrostatic dust collection device and the guide cavity, the bottom of the air passing channel is communicated with the guide cavity, the upper part of the air passing channel is communicated with air inlets at the bottoms of the electrostatic dust collector units, and an open air outlet is formed in the top of each electrostatic dust collector unit; and the control device is used for controlling the electrostatic dust removal device to perform electrostatic adsorption intermittently in turn so as to enable the dust particles adsorbed by the electrostatic dust collector unit to fall back to the upper surface of the belt conveyor.
For current belt conveyor dust collector, use the belt conveyor reprint point dust pelletizing system in this application embodiment, can realize safe, reliable, high-efficient dust removal at the reprint point, the material falls to the band conveyer from the blanking point and raises dust seriously, when exporting from the baffle box export, does not basically have the raise dust phenomenon.
In addition, the belt conveyor transfer point dust removal system according to the embodiment of the application also has the following additional technical characteristics:
according to some embodiments of the application, the electrostatic precipitator unit includes draught fan and electrostatic precipitation subassembly, the draught fan with the intercommunication is arranged about the electrostatic precipitation subassembly, the draught fan can guide and form the air current from lower supreme, makes the air current passes through the electrostatic precipitation subassembly. In this form of electrostatic precipitator unit, the induced draft fan is disposed at the upper side of the electrostatic precipitation assembly, so that the free fall-back of dust particles to the belt can be allowed when the electrostatic precipitation assembly is intermittently operated.
According to some embodiments of the present application, the control device is in signal connection with the electrostatic precipitation assemblies of the plurality of electrostatic precipitator units, and the control device is configured to control the electrostatic precipitation assemblies of the plurality of electrostatic precipitator units to alternately and intermittently perform power-off operation; when the electrostatic dust collection component is electrified, dust particles are adsorbed in the electrostatic dust collection component under the action of an electrostatic field; when the electrostatic dust collection assembly is powered off, the electrostatic dust collection assembly discharges the adsorbed dust particles directly to the upper surface of the belt conveyor through a rapping action. Through the actions of adsorption-release-reabsorption and the matching of rapping, dust particles are exhausted from the belt after being sucked up, and a device for collecting the adsorbed dust particles is omitted.
According to some embodiments of the application, a plurality of second flaring openings are arranged on the top wall of the guide chute close to the outlet, the second flaring openings correspond to the bottom air inlets of the electrostatic dust collector units one by one, each second flaring opening is arranged below the bottom air inlet of the corresponding electrostatic dust collector unit, and the bottom of the air passing channel further comprises the air inlet of the air passing channel; the air inlet of the air passing channel is communicated with the material guide cavity, and the air passing channel is used for supplying air to the electrostatic dust collection device in an upward direction; the second flaring openings are communicated with the material guide cavity and used for enabling air flow to upwards enter the electrostatic dust collection device, and when the electrostatic dust collection assembly is powered off, dust particles are discharged to the upper surface of the belt conveyor from the bottom air inlet through the corresponding second flaring openings. Through arranging the second flaring and the bottom air inlet which correspond up and down and the air inlet of the air passing channel, air flow can be guided into the electrostatic dust collection device through the air channel, and discharged dust particles can be collected.
According to some embodiments of the present application, a caliber of the second flare is larger than a caliber of the air inlet of the electrostatic precipitator unit to facilitate sufficient collection of dust particles.
According to some embodiments of the present application, the bottom air inlet and the bottom air outlet of the electrostatic precipitator unit are open at both ends and have no enclosed space in between. Through this kind of form, can avoid the dust storm, still make the air current smoothly flow from the air outlet at top.
According to some embodiments of the application, the plurality of electrostatic precipitator units are arranged next to each other in sequence along the length direction of the material guide chute, and the distance between the electrostatic precipitator unit positioned close to the outlet of the material guide chute and the outlet of the material guide chute is less than or equal to 2 m. Through the arrangement form, the plurality of air guide ports are compactly arranged, and a strong air suction effect can be formed in the negative pressure area; and negative pressure can be effectively formed at the outlet of the guide chute, so that dust is prevented from being diffused out of the guide chute along with the output of materials.
According to some embodiments of the application, the dust suppression curtain assembly comprises a plurality of dust suppression half curtains which are arranged inside the material guide chute at intervals along the length direction of the material guide chute and arranged at a section from the material dropping point to the electrostatic dust removal device, and the material guide chute and the plurality of dust suppression half curtains together form an S-shaped channel along the length direction of the material guide chute. Through this kind of arrangement form, can reduce the inside air current velocity of flow of baffle box, make the dust in the air current subside. Under the action of the electrostatic dust removal device, the airflow passes through the S channel of the first dust suppression curtain component and forms a negative pressure area.
According to some embodiments of the present application, the dust suppression half curtain comprises: a dust suppression half curtain body; the rotating shaft is connected with the upper side of the dust suppression half curtain body and is used for being rotatably installed on the top wall of the guide chute. The arrangement is easy to assemble and has long service life.
According to some embodiments of the present application, the dust suppressing half curtain body is a rubber soft curtain. The surface of the rubber soft curtain has elasticity, and can absorb the impulse when dust particles flow and promote the sedimentation of the dust particles.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a first view angle of a belt conveyor transfer point dust removal system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a second view angle of the belt conveyor transfer point dust removal system provided in the embodiment of the present application;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic layout of a first dust suppression curtain assembly in a belt conveyor transfer point dust removal system provided by an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a dust suppression half curtain in a belt conveyor transfer point dust removal system provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electrostatic precipitator unit in a dust removal system of a transfer point of a belt conveyor according to an embodiment of the present application.
Icon: 100-a belt conveyor transfer point dust removal system; 110-a belt conveyor; 111-a first end; 112-a second end; 113-a belt; 1131 — upper surface of belt; 115-a frame; 116-a blanking point; 117-blanking end; 120-unpowered dust removal device; 121-a material guide groove; 1211-chute inlet; 1212-chute outlet; 1213-first flaring; 1214-negative pressure zone; 1215-a second flare; 122-boot; 124-a dust curtain assembly; 1241-dust suppression half curtain; 1242-dust suppression half-curtain body; 1243-rotating shaft; 126-a material guide cavity; 128-skirt sealing rubber; 130-an electrostatic precipitation device; 131-installing a frame; 132-an electrostatic precipitator unit; 1321-induced draft fan; 1322-an electrostatic precipitation assembly; 1323-air intake; 1324-air outlet; 1325-rubber hose; 134-an operating platform; 140-a wind passage; 141-the bottom of the air passage; 142-the upper part of the air passage; 143-air inlet of air passage.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Referring to fig. 1 and 2, a belt conveyor transfer point dust removal system 100 according to an embodiment of the present disclosure includes a belt conveyor 110, an unpowered dust removal device 120, an electrostatic dust removal device 130, and a control device.
The belt conveyor 110 travels in a first direction, and the two ends of the belt conveyor 110 are a drop point 116 and a drop end 117, respectively.
The unpowered dust collector 120 comprises a material guiding chute 121, a tail box 122, a skirt sealing rubber 128 and a dust suppression curtain assembly 124 (see fig. 4). The material guide chute 121 extends from the blanking point 116 to the blanking end 117 along the first direction, the material guide chute 121 is configured to cover the upper surface of the belt conveyor 110 and form a material guide cavity 126 with two open ends together with the upper surface of the belt conveyor 110, and the two ends of the material guide chute 121 are a material guide chute inlet 1211 and a material guide chute outlet 1212, respectively. The top wall of the chute 121 near the chute inlet 1211 is provided with a first flared end 1213, and the first flared end 1213 corresponds to the blanking point 116. The material guide chute 121 seals a gap between the material guide chute 121 and the belt 113 through the tail box 122 and the skirt sealing rubber 128, and the dust suppression curtain assembly 124 reduces the speed of induced wind generated by the material dropping point 116.
The electrostatic dust removal device 130 is arranged at the position, close to the guide chute outlet 1212, of the guide chute 121, the electrostatic dust removal device 130 comprises a control device and a plurality of electrostatic dust collector units 132, the plurality of electrostatic dust collector units 132 are vertically arranged in parallel, an air inlet 1323 is arranged at the bottom of each electrostatic dust collector unit 132, an open air outlet 1324 is arranged at the top of each electrostatic dust collector unit 132, and the air outlet 1324 is communicated with the outside.
An air passing channel 140 is connected between the electrostatic dust collector 130 and the material guiding cavity 126, the bottom 141 of the air passing channel is communicated with the material guiding cavity 126, and the upper 142 of the air passing channel is communicated with the bottom air inlets 1323 of the plurality of electrostatic dust collector units 132.
The control means is used to control the electrostatic precipitator means 130 to electrostatically adsorb intermittently in turn so that the dust particles adsorbed by the electrostatic precipitator unit 132 fall back to the belt upper surface 1131.
The belt conveyor reprinting point dust removal system 100 in the embodiment of the application is provided with the unpowered dust removal device 120 and the electrostatic dust removal device 130, when materials fall onto the belt conveyor 110 from the first flaring 1213, the dust phenomenon is serious, the belt conveyor 110 conveys the materials along the first direction, the materials are brought into the guide chute 121, and the guide chute 121 preliminarily inhibits the dust phenomenon through the tail box 122, the skirt sealing rubber 128 and the dust suppression curtain component 124; further, the electrostatic dust collector 130 draws air from the material guiding groove 121 and performs electrostatic dust collection, so as to not only draw the dust airflow out of the material guiding groove 121 from the air passing channel bottom 141, but also control the electrostatic dust collector 130 to intermittently perform electrostatic adsorption in turn through the control device, so that the dust particles adsorbed by the electrostatic dust collector unit 132 fall back to the upper surface 1131 of the belt. With this arrangement, not only dust carried in from the side of the chute inlet 1211 is sucked out of the chute 121 and electrostatically removed, but also the dust flying phenomenon at the chute outlet 1212 is well alleviated. After the electrostatic precipitator unit 132 sucks in the dust airflow and performs electrostatic precipitation, the purified air can freely flow out from the air outlet 1324, and the dust will not accumulate in the dust removing chamber of the electrostatic precipitator unit 132 and bring about a risk of dust storm. The control device controls the electrostatic dust collection device to operate intermittently, can realize the actions of adsorption-release-re-adsorption, can collect dust particles and then uniformly fall back to the belt 113, saves an additional cloth bag for collecting the dust particles, and also keeps an air path smooth.
Compared with the existing dust removal device for the belt conveyor, the dust removal system 100 for the transfer point of the belt conveyor in the embodiment of the application can realize safe, reliable and efficient dust removal at the transfer point, and the material falls from the blanking point 116 to the belt conveyor 110, so that the dust is seriously raised, and basically no dust is raised when the material is output from the guide chute outlet 1212.
The structure and interconnection of the components of the belt conveyor transfer point dust removal system 100 of the present embodiment are described below.
Referring to fig. 1, the belt conveyor 110 includes a first end 111 and a second end 112, the first end 111 is provided with a blanking point 116, and the second end 112 is a blanking end 117 for connecting with a next process.
The following illustrates a specific configuration of the belt conveyor 110.
Referring to fig. 1, the belt conveyor 110 includes a frame 115, a belt driving mechanism, and a belt 113. The belt driving mechanism comprises a motor (not shown in the figure), a driving shaft and a driven shaft (not shown in the figure), the driving shaft and the driven shaft are respectively rotatably installed at the front end and the rear end of the rack 115, and the motor is installed on the rack 115 and is in transmission connection with the driving shaft. Under the driving of the motor, the driving shaft and the driven shaft jointly drive the belt 113 to move along the first direction.
The belt upper surface 1131 is used to transport material. As will be readily appreciated, as the belt 113 travels in the first direction, material falls from the drop point 116 onto the belt upper surface 1131 and is conveyed by the belt 113 to the second end 112.
In some embodiments of the present application, the material is coal dust and the dust particles in the air stream are coal dust.
In other embodiments, the material may also be sand, crushed concrete or other powder material which is easy to raise dust.
Referring to fig. 1 and 2, the unpowered dust collector 120 is used for unpowered physical dust settling.
In some embodiments of the present application, the unpowered dust removal device 120 includes a material chute 121, a tail box 122, and a curtain.
The chute 121 covers the upper surface of the belt conveyor 110, and the chute 121 includes a chute inlet 1211 and a chute outlet 1212. The top wall of the chute 121 adjacent the chute inlet 1211 is provided with a first flare 1213, the first flare 1213 corresponds to the drop point 116, and material falls aloft into the first flare 1213 and from the first flare 1213 onto the belt upper surface 1131.
The material guide chute 121 is used for reducing the dust emission phenomenon during the process that the material falls from the material falling point 116 to the upper surface 1131 of the belt and is conveyed along the first direction.
Alternatively, the material guide chute 121 includes a top wall and two side walls, which together form the material guide chamber 126 with the upper surface 1131 of the belt. The two sidewalls are vertically disposed on the left and right sides of the belt upper surface 1131.
Referring to fig. 4, a skirt seal rubber 128 is used to seal between the side wall and the belt 113.
It is easy to understand, the material falls into belt upper surface 1131 from blanking point 116 and easily produces the raise dust, and then the material is carried along first direction and gets into guide cavity 126, and baffle box 121 can reduce the raise dust of material and spread to the periphery to play preliminary dust fall dust removal effect.
Referring to fig. 1, in some embodiments of the present application, the length L of the material guide chute 121115-20 m. Through this kind of arrangement form, can enough alleviate the raise dust phenomenon of material, can reduce the manufacturing cost of device again.
The boot 122 is disposed at the chute inlet 1211 and seals the chute inlet 1211.
As will be readily appreciated, as material falls from the drop point 116 onto the upper surface 1131 of the belt, the dust particles spread and the boot 122 envelops the chute inlet 1211, which mitigates dusting of the drop point 116 proximate the first end 111.
The baffle curtain is arranged at the outlet 1212 of the guide chute, and when the material is conveyed along the first direction, induced wind along the first direction is generated, so that the raised dust is driven to flow along the first direction. The blocking curtain can block dust brought out when the materials are output from the guide chute 121, so that the dust falling effect is realized.
Referring to fig. 4, the belt conveyor transfer point dust removal system 100 further optionally includes a dust curtain assembly 124, the dust curtain assembly 124 being disposed along the length of the material guide chute 121 from the first flared end 1213 to a section adjacent to the electrostatic dust removal device 130.
Through this kind of arrangement form, can slow down the induced air that blanking point 116 produced, make the dust in the air current subside.
Referring to fig. 4, the dust suppression curtain assembly 124 includes a plurality of dust suppression half curtains 1241, the dust suppression half curtains 1241 are arranged inside the material guide chute 121 at intervals along the length direction of the material guide chute 121, and the material guide chute 121 and the plurality of dust suppression half curtains 1241 together form an S-shaped channel along the length direction of the material guide chute 121.
Under the action of the electrostatic dust collector 130, the airflow entering the air passage 140 includes two portions, one portion of the airflow enters the air passage bottom 141 after passing through the S passage of the dust suppression curtain assembly 124 along the first direction, and the other portion of the airflow enters the air passage bottom 141 from the side of the material guide chute outlet 1212 along the reverse direction of the first direction, and forms a negative pressure region 1214 in the region close to the material guide chute outlet 1212.
Referring to fig. 5, as an example of a specific configuration of the dust suppression half curtain 1241, the dust suppression half curtain 1241 includes a dust suppression half curtain body 1242 and a rotation shaft 1243, the rotation shaft 1243 is connected to an upper side of the dust suppression half curtain body 1242, and the rotation shaft 1243 is rotatably mounted to a top wall of the material guide chute 121. For example, the top cover is provided with an insertion slot, the rotating shaft 1243 is laterally inserted into the insertion slot, two ends of the rotating shaft 1243 are fixed on the material guiding slot 121, and under the action of the airflow, the airflow pushes the dust suppression half-curtain body 1242 to rotate around the rotating shaft 1243 to open. The arrangement is easy to assemble and has long service life.
Further, the dust suppression half-curtain 1241 is a rubber soft curtain. The surface of the rubber soft curtain has elasticity, and can absorb the impulse when dust particles flow and promote the sedimentation of the dust particles.
Referring to fig. 1, the electrostatic precipitator 130 includes a mounting frame 131 and a plurality of electrostatic precipitator units 132.
The air inlet 1323 and the air outlet 1324 at the bottom of the electrostatic precipitator unit 132 are open at two ends, and there is no closed space in the middle, so that the possibility of dust storm is avoided, and the power required by induced air is low.
The electrostatic dust removal device 130 is arranged at the position, close to the guide chute outlet 1212, of the guide chute 121, and is used for further forming a negative pressure region 1214 on the top wall of the guide chute 121 on the basis of the unpowered dust removal device 120, guiding the dust in the guide cavity 126 to flow to the negative pressure region 1214, and enter the electrostatic dust removal device 130, and then exhausting the air after being processed by the electrostatic dust removal device 130.
Referring to fig. 1 and 3, as a specific implementation form of the "air inlet 1323 is communicated with the material guiding chute 121", a plurality of second flaring ports 1215 are provided on the top wall of the material guiding chute 121 near the material guiding chute outlet 1212, the second flaring ports 1215 are in one-to-one correspondence with the bottom air inlet 1323 of the electrostatic precipitator unit 132, the second flaring ports 1215 are arranged below the corresponding bottom air inlet 1323 of the electrostatic precipitator unit 132, and the air passage bottom 141 further includes the air passage air inlet 143. The air inlet 143 of the air passage is communicated with the material guiding chamber 126, and the air passage 140 is used for supplying air to the electrostatic dust collector 130 upwards.
A plurality of second flaring ports 1215 are communicated with the material guide cavity 126, and the plurality of second flaring ports 1215 are used for supplying air to enter the electrostatic precipitation device 130 upwards; and, when the electrostatic precipitator assembly 1322 is de-energized, the supply dust particles fall back from the bottom inlet vents 1323 to the upper belt surface 1131 of the belt conveyor 110 through the corresponding second flared openings 1215.
Further, the bottom air inlet 1323 of each electrostatic precipitator unit 132 is provided with a rectifying plate to guide the air flow uniformly into the electrostatic precipitator unit 132.
Through this kind of arrangement form, not only can improve electrostatic precipitator efficiency, open partial electrostatic precipitator unit 132 operation when the raise dust is less in order to reduce power consumption, can also set up some spare electrostatic precipitator units to increase electrostatic precipitator device 130's reliability.
As an example form, the electrostatic precipitator units 132 are provided with three groups, each group comprising two electrostatic precipitator units 132, the three groups of electrostatic precipitator units 132 being arranged immediately adjacent in the first direction.
The electrostatic precipitator unit 132 is supported on the mounting frame 131, the air inlet 1323 is provided with a rubber hose 1325, and the rubber hose 1325 is opposite to the second flaring 1215 in the up-and-down direction, so that the assembly is convenient, and the slight shaking of the electrostatic precipitator unit 132 and the material guide chute 121 in the working process can be allowed.
Further, the second flared end 1215 has a larger diameter than the inlet 1323 to direct the dust stream into the electrostatic precipitator 130.
Alternatively, the plurality of electrostatic precipitator units 132 are closely arranged in sequence along the length direction (i.e., the first direction) of the guide chute 121.
With this arrangement, the plurality of second flares 1215 are compactly arranged in the first direction, enabling a strong suction effect to be created in the negative pressure region 1214.
Referring to fig. 1, further, a distance L between the electrostatic precipitator unit 132 near the chute outlet 1212 and the chute outlet 1212 is set3≤2m。
Through this kind of arrangement form, can form the negative pressure at baffle box export 1212 effectively, avoid the dust granule to follow the output of material and spread out from baffle box 121. And the dust raising phenomenon at the outlet 1212 of the guide chute is well inhibited by matching with the baffle curtain.
The following illustrates a specific configuration of the electrostatic precipitator unit 132.
Referring to fig. 6, the electrostatic precipitator unit 132 includes an induced draft fan 1321 and an electrostatic precipitator assembly 1322. The induced draft fan 1321 and the electrostatic dust collection component 1322 are arranged in a vertically communicated manner, and the induced draft fan 1321 can guide airflow from bottom to top to enable the airflow to pass through the electrostatic dust collection component 1322.
Specifically, the electrostatic dust collection assembly 1322 is located at a lower side of the induced draft fan 1321, and the induced draft fan 1321 can form negative pressure to guide the airflow to flow upward from the air inlet 1323.
Preferably, the induced draft fan 1321 is an axial flow fan, and has a small power consumption, so that the power consumption can be reduced under the same air flow.
In other embodiments, the induced draft fan 1321 may also be a centrifugal fan.
The electrostatic dust collection assembly 1322 comprises a cathode plate and a collection pole plate, an electrostatic dust removal chamber is formed between the collection pole plate and the cathode plate, and the electrostatic dust removal chamber is used for performing electrostatic dust removal on air flow passing through the electrostatic dust removal chamber from bottom to top and intercepting dust particles in the air flow.
For example, the electrostatic dust collecting assembly 1322 is a cylindrical electrostatic dust collecting filter element, and a passage is formed at the axial center from bottom to top so as to allow the electrostatic precipitator unit 132 to pass through vertically.
The control device is used for controlling the electrostatic precipitator assemblies 1322 of the plurality of electrostatic precipitator units 132 to operate intermittently in a power-off mode in turn. By the action of "adsorption-release-re-adsorption", the dust particles are sucked up and then fall back onto the belt 113, eliminating the need for a device for collecting the adsorbed dust particles.
When the electrostatic dust collection assembly 1322 is powered on, the electrostatic dust collection assembly 1322 adsorbs dust particles in the air flow through the action of an electrostatic field;
when the electrostatic dust collection assembly 1322 is de-energized, the electrostatic dust collection assembly 1322 shakes the adsorbed dust particles off the collection plate of the electrostatic dust collection assembly 1322 via a rapping event, and the dust particles fall and enter the second flared end 1215 from the bottom air inlet 1323, and are discharged directly from the second flared end 1215 to the belt upper surface 1131.
Specifically, when the electrostatic precipitator assembly 1322 is energized, a negative electric field is formed in the electrostatic precipitator chamber, and dust particles carry positive charges and are collected on the collection plate. When the electrostatic precipitator assembly 1322 is de-energized, there is no electric field in the electrostatic precipitator chamber and the dust particles fall back onto the belt 113.
The dedusted airflow flows out of the electrostatic precipitator unit 132 through the air outlet 1324 and is discharged to the external environment.
Referring to FIG. 1, as an exemplary form, a distance L between the blanking point 116 and the electrostatic precipitator 130 is provided2Is more than or equal to 6 m. With this arrangement, there is sufficient space for the electrostatic precipitator 130 to be disposed, and a negative pressure can be effectively formed in the material guide chamber 126.
Optionally, an operation platform 134 is disposed on the mounting frame 131, and the control device is disposed on the mounting frame 131 to facilitate the workers to repair and maintain the electrostatic precipitator unit 132.
Optionally, the belt conveyor transfer point dust removal system 100 further comprises a remote control system, the control device being one of the control elements in the remote control system. The remote control system can monitor and adjust the real-time dust removal state and fault condition of the electrostatic dust removal device 130. The operation of the electrostatic dust removal device 130 by a worker in a dust-free environment is facilitated by the remote control system.
The working principle of the belt conveyor transfer point dust removal system 100 in the embodiment of the application is as follows:
the material falls from the blanking point 116 to the upper surface 1131 of the belt through the first flaring 1213, the belt driving mechanism drives the belt 113 to move along the first direction, and the material is conveyed along the first direction and enters the material guide chute 121;
the boot 122 mitigates dusting of the drop point 116 proximate the first end 111;
the materials are conveyed in the guide chute 121 along the first direction, the guide chute 121 wraps the materials, the first dust suppression curtain assembly 124 increases the wind resistance of induced wind, reduces the wind speed of the induced wind, and realizes the preliminary sedimentation of dust;
the induced draft fan 1321 operates and forms a negative pressure area 1214 in the guide chute 121, on one hand, induced wind is guided to pass through the dust suppression curtain assembly 124 in a first direction, on the other hand, induced airflow reversely flows in the first direction from the guide chute outlet 1212, and the negative pressure area 1214 is formed near the guide chute outlet 1212;
in the negative pressure region 1214, the electrostatic precipitator unit 132 sucks the airflow out of the material guiding chute 121 upwards, and discharges the airflow to the external environment from the air outlet 1324 to form a smooth air path;
the airflow continuously passes through the electrostatic precipitation assembly 1322, the electrostatic precipitation assembly 1322 is intermittently powered on and off, and dust particles and dust are repeatedly collected and released to fall onto the belt 113;
the material is output from the guide chute outlet 1212, and the negative pressure environment of the guide chute outlet 1212 is matched with the action of the baffle curtain, so that the output material basically has no dust;
the material is discharged from the chute outlet 1212 of the chute 121 and enters the next process step from the discharge end 117 of the belt conveyor 110.
Compared with the existing dust removing device of the belt conveyor, the dust removing system 100 of the transfer point of the belt conveyor in the embodiment of the present application combines the unpowered physical dust removing method and the electrostatic dust removing method to form a normal air path, induces air to enter the material guide chute 121 from the material guide chute inlet 1211 and flow out from the air outlet 1324 of the electrostatic dust remover unit 132, maintains negative pressure at the material guide chute outlet 1212, adsorbs dust particles in air flow in an intermittent adsorption manner and releases the dust particles back to the belt 113, and an additional dust collecting bag is omitted. By using the belt conveyor transfer point dust removal system 100, safe, reliable and efficient dust removal can be realized at a transfer point, and materials fall from the blanking point 116 to the belt conveyor 110, so that dust is seriously raised, and basically no dust is raised when the materials are output from the guide chute outlet 1212.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a belt conveyor reprints some dust pelletizing system, is applied to belt conveyor, its characterized in that includes:
the unpowered dust removal device comprises a guide chute, a tail box, skirt edge sealing rubber and a dust suppression curtain assembly;
the guide chute is used for covering the upper surface of the belt conveyor and forming a guide cavity with two open ends together with the upper surface of the belt conveyor, and a first flaring is arranged on the top wall of the guide chute close to the inlet and corresponds to a blanking point of the belt conveyor;
the guide chute seals a gap between the guide chute and the belt through the tail box and the skirt edge sealing rubber, and the dust suppression curtain assembly reduces the speed of induced wind generated by a blanking point of the belt conveyor;
the electrostatic dust collection device is arranged at the position, close to the outlet, of the guide chute and comprises a plurality of electrostatic dust collector units, the electrostatic dust collector units are vertically arranged in parallel, an air passing channel is connected between the electrostatic dust collection device and the guide cavity, the bottom of the air passing channel is communicated with the guide cavity, the upper part of the air passing channel is communicated with air inlets at the bottoms of the electrostatic dust collector units, and an open air outlet is formed in the top of each electrostatic dust collector unit;
and the control device is used for controlling the electrostatic dust removal device to perform electrostatic adsorption intermittently in turn so as to enable the dust particles adsorbed by the electrostatic dust collector unit to fall back to the upper surface of the belt conveyor.
2. The belt conveyor reprint point dust pelletizing system of claim 1, characterized in that, the electrostatic precipitator unit includes draught fan and electrostatic precipitator subassembly, draught fan and the electrostatic precipitator subassembly intercommunication arranges from top to bottom, the draught fan can guide and form the air current from bottom to top, makes the air current pass through the electrostatic precipitator subassembly.
3. The system of claim 2, wherein the control device is in signal connection with the electrostatic dust collecting assemblies of the plurality of electrostatic precipitator units, and the control device is used for controlling the electrostatic dust collecting assemblies of the plurality of electrostatic precipitator units to alternately and intermittently cut off the power;
when the electrostatic dust collection component is electrified, dust particles are adsorbed in the electrostatic dust collection component under the action of an electrostatic field;
when the electrostatic dust collection assembly is powered off, the electrostatic dust collection assembly discharges the adsorbed dust particles directly to the upper surface of the belt conveyor through a rapping action.
4. The belt conveyor transfer point dust removal system of claim 3, wherein a top wall of the material guide chute near the outlet is provided with a plurality of second flaring openings, the plurality of second flaring openings correspond to the bottom air inlets of the electrostatic dust collector units one by one, each second flaring opening is arranged below the bottom air inlet of the corresponding electrostatic dust collector unit, and the bottom of the air passing channel further comprises an air passing channel air inlet;
the air inlet of the air passing channel is communicated with the material guide cavity, and the air passing channel is used for supplying air to the electrostatic dust collection device in an upward direction;
the second flaring openings are communicated with the material guide cavity and used for allowing airflow to upwards enter the electrostatic dust collection device, and when the electrostatic dust collection assembly is powered off, dust particles fall back to the upper surface of the belt conveyor from the bottom air inlet through the corresponding second flaring openings.
5. The belt conveyor transfer point dust extraction system of claim 4, wherein a caliber of the second flare is greater than a caliber of an air inlet of the electrostatic precipitator unit.
6. The system of claim 2, wherein the bottom air inlet and outlet of the electrostatic precipitator unit are open at both ends and have no enclosed space in between.
7. The system of claim 1, wherein the plurality of electrostatic precipitator units are sequentially disposed closely along the length of the material guide chute, and the distance between the electrostatic precipitator unit located near the outlet of the material guide chute and the outlet of the material guide chute is less than or equal to 2 m.
8. The belt conveyor transfer point dust removal system of claim 1, wherein the dust suppression curtain assembly comprises a plurality of dust suppression half curtains arranged at intervals along a length direction of the material guide chute inside the material guide chute and at a section from the drop point to the electrostatic dust removal device, the material guide chute and the plurality of dust suppression half curtains together forming an S-shaped channel along the length direction of the material guide chute.
9. The belt conveyor transfer point dust removal system of claim 8, wherein the dust suppression half-curtain comprises:
a dust suppression half curtain body;
the rotating shaft is connected with the upper side of the dust suppression half curtain body and is used for being rotatably installed on the top wall of the guide chute.
10. The belt conveyor transfer point dust removal system of claim 9, wherein the dust suppression half-curtain body is a rubber soft curtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948586.XA CN111924582A (en) | 2020-09-10 | 2020-09-10 | Dust removal system for transfer point of belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948586.XA CN111924582A (en) | 2020-09-10 | 2020-09-10 | Dust removal system for transfer point of belt conveyor |
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| Publication Number | Publication Date |
|---|---|
| CN111924582A true CN111924582A (en) | 2020-11-13 |
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ID=73309052
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010948586.XA Pending CN111924582A (en) | 2020-09-10 | 2020-09-10 | Dust removal system for transfer point of belt conveyor |
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| CN (1) | CN111924582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116832963A (en) * | 2023-06-30 | 2023-10-03 | 恒盛能源股份有限公司 | Coal ash dust removing system based on coal conveying and feeding mechanism |
-
2020
- 2020-09-10 CN CN202010948586.XA patent/CN111924582A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116832963A (en) * | 2023-06-30 | 2023-10-03 | 恒盛能源股份有限公司 | Coal ash dust removing system based on coal conveying and feeding mechanism |
| CN116832963B (en) * | 2023-06-30 | 2024-02-02 | 恒盛能源股份有限公司 | Coal ash dust removing system based on coal conveying and feeding mechanism |
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