阅读说明：本技术 烧结机机尾带滤网可吹扫的集尘装置 (Dust collecting device with sweeping function for tail belt filter screen of sintering machine ) 是由 祁玉良 尹承磊 洪强 陈向波 吕鑫 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种烧结机机尾带滤网可吹扫的集尘装置,其结构包括壳体、粉尘分离组件、吹扫组件、安装轴组件、驱动部件、电机和卸灰阀,所述壳体内部空腔,所述壳体内设有粉尘分离组件、吹扫组件和安装轴组件,粉尘分离组件与安装轴组件上端套置,对粉尘分离组件进行吹扫的吹扫组件设于粉尘分离组件的下方,安装轴组件的下端设有支撑部件、驱动部件、主动轴和电机,所述安装轴组件的下端与主动轴相连,所述驱动部件控制主动轴和安装轴组件同时旋转,安装轴组件的旋转带动粉尘分离组件转动；所述壳体底部为锥形集灰斗。该装置能对粉尘快速捕捉且处理、减少堆积,大大调高了粉尘分离效率；同时设置吹扫组件,防止分离器堵塞。(The invention discloses a dust collecting device with a filter screen at the tail of a sintering machine capable of purging, which structurally comprises a shell, a dust separating component, a purging component, an installation shaft component, a driving component, a motor and an ash discharge valve, wherein the shell is internally provided with a cavity; the bottom of the shell is a conical dust collecting hopper. The device can quickly capture and treat dust, reduce accumulation and greatly improve the dust separation efficiency; and meanwhile, the purging component is arranged to prevent the separator from being blocked.)

1. The dust collecting device capable of sweeping the filter screen at the tail of the sintering machine is characterized by comprising a shell, a dust separating component, a sweeping component, an installation shaft component, a driving component, a motor and an ash unloading valve, wherein a cavity is formed in the shell, a smoke inlet is formed in the upper end of the shell, smoke outlets are respectively formed in two sides of the lower portion of the shell, the shell is internally provided with the dust separating component, the sweeping component and the installation shaft component, the dust separating component is a disc formed by a grating plate and a filtering membrane, the dust separating component is sleeved on the upper end of the installation shaft component, the sweeping component sweeping the dust separating component is arranged below the dust separating component, the lower end of the installation shaft component is arranged at the bottom of the shell, the lower end of the installation shaft component is provided with a supporting component, the driving shaft and the motor, the lower end, the driving part controls the driving shaft and the mounting shaft assembly to rotate simultaneously, and the rotation of the mounting shaft assembly drives the dust separation assembly to rotate; the bottom of the shell is a conical ash collecting hopper, and the bottom end of the ash collecting hopper is provided with an ash discharging valve.

2. The dust collecting device with the filter screen capable of purging the tail belt of the sintering machine as claimed in claim 1, wherein the mounting shaft assembly comprises a rotating shaft, a fixed sleeve, a bearing seat, positioning keys and a supporting part, the fixed sleeve is open at both ends and the lower part of the outer wall of the fixed sleeve is fixedly connected with the bottom of the casing, the supporting part for fixing and supporting is arranged at the lower end of the fixed sleeve, the rotating shaft is arranged in the inner cavity of the fixed sleeve, both ends of the rotating shaft extend to the outside of both ends of the fixed sleeve, the bearing seat is arranged at the upper part of the rotating shaft, the bearing is mounted in the bearing seat, and the outer circumferential wall of the upper end of the rotating shaft and; the lower end of the rotating shaft is connected with a driving shaft through a bearing, and the driving shaft is connected with a driving part.

3. The dust collector with the purgable filter screen for the tail belt of the sintering machine as claimed in claim 2, wherein the supporting member comprises a disc-shaped lower cover and a supporting frame, the lower cover is centrally provided with a through hole for mounting the rotary shaft, and the bottom of the lower cover is provided with the supporting frame for supporting.

4. The dust collector with a purgable filter screen at the tail of sintering machine as claimed in claim 2, wherein the driving part is a gear transmission.

5. The dust collecting device with the sweeping function of the filter screen at the tail of the sintering machine as claimed in claim 2, wherein the dust separating assembly comprises a grid plate, arc-shaped fixing plates, an upper filter membrane, a lower filter membrane and a first mounting hole, the grid plate is cross-shaped, the cross-shaped grid plate and four arc-shaped fixing plates form a disc shape, the first mounting hole is formed in the center of the grid plate, the first mounting hole is inserted into the upper end of the mounting shaft assembly through a positioning key, the grid plate and the four arc-shaped fixing plates form four fan-shaped spaces, the upper filter membrane is arranged on the upper surface of each fan-shaped space, the lower filter membrane is arranged on the lower surface of each fan-shaped space, and.

6. The dust collecting device with the filter screen at the tail of the sintering machine as claimed in claim 1 or 2, wherein the blowing component comprises a blowing disc, an air outlet, a second mounting hole, a compressed air pump, a main gas conveying pipeline, a secondary gas conveying pipeline and a hurricane whistle, the blowing disc is internally provided with a cavity, the center of the second mounting hole is provided with a second mounting hole fixedly connected with the outer wall of the bearing seat, the outer circumferential wall of the bearing seat is provided with a plurality of positioning keys, and the second mounting hole is inserted with the positioning keys; the device comprises a blowing disc, a compressed air pump, a gas conveying main pipeline and a plurality of gas conveying auxiliary pipelines, wherein the compressed air pump is arranged on one side of the blowing disc, the inner cavity of the blowing disc is provided with the gas conveying main pipeline and the plurality of gas conveying auxiliary pipelines, each gas conveying auxiliary pipeline is respectively connected with the gas conveying main pipeline, the gas conveying main pipeline is connected with the compressed air pump, the gas conveying auxiliary pipelines are provided with a plurality of hurricane whistles, and each hurricane whistle corresponds to an air outlet hole of the top wall of the blowing disc.

7. The dust collector with a purgable filter screen at the tail of a sintering machine as claimed in claim 6, wherein the hurricane whistle comprises a hurricane nozzle, an accelerating straight cylinder and a reducing section, the upper end of the accelerating straight cylinder is provided with the hurricane nozzle, the lower end of the accelerating straight cylinder is provided with the reducing section with a narrow top and a wide bottom, and the lower end of the reducing section is connected with the gas delivery sub-pipeline.

8. The dust collector with the purgable filter screen at the tail of the sintering machine as claimed in claim 1, wherein the filter membrane is a membrane formed by crossing n nanofiber bundles.

Technical Field

The invention relates to a dust collecting device, in particular to a dust collecting device with a filter screen at the tail of a sintering machine and capable of being blown.

Background

The flue gas generated in the sintering production process of the steel industry in China is very large. Sintering machine tail rear end electric dust removal equipment is often because the sintering dust is too big, and have viscidity, and polar line bonding dust, mains voltage, electric current drop into too big or unable normal input, through the investigation, the dust characteristics of sintering process tail: the average flue gas temperature of the tail of the sintering machine is 80-150 ℃, the temperature is generally 80-120 ℃ after air mixing through dust suction points such as a belt cooler and the like, and the fluctuation range is small. The flue gas humidity is small, and the water content is about 3-5%. The iron content of the dust is similar to that of the sintered ore, the iron content is more than 50 percent, the CaO accounts for about 10 percent, the SiO2 is less than 10 percent, and the balance is a small amount of MgO and the like. The specific resistance of the dust is 109-1012 omega cm. Has the characteristics of coarse particles, strong grinding performance and the like. The main performance is as follows: because the concentration of the dust is large and unstable, the temperature of the flue gas is high, and the particularities of the physicochemical properties of the dust, the phenomena of balling and bonding often occur.

Disclosure of Invention

The invention aims to provide a dust collecting device with a filter screen at the tail of a sintering machine capable of purging, which can collect large-particle and sticky sintering dust in advance at a flue at the tail of the sintering machine, prevent polar lines of rear-end electric dust removing equipment from adhering dust, and prevent overlarge power supply voltage and current input or abnormal input, thereby further improving the efficiency of the electric dust removing equipment, saving energy sources such as power consumption and water consumption, and greatly improving the dust separation efficiency; and meanwhile, the purging component is arranged to prevent the separator from being blocked.

The technical scheme adopted by the invention for solving the technical problems is as follows: the dust collecting device capable of sweeping the filter screen at the tail of the sintering machine structurally comprises a shell, a dust separating assembly, a sweeping assembly, an installation shaft assembly, a driving part, a motor and an ash unloading valve, wherein a cavity is formed in the shell, a smoke inlet is formed in the upper end of the shell, smoke outlets are formed in two sides of the lower portion of the shell respectively, the shell is internally provided with the dust separating assembly, the sweeping assembly and the installation shaft assembly, the dust separating assembly is a disc formed by a grating plate and a filtering membrane, the dust separating assembly is sleeved on the upper end of the installation shaft assembly, the sweeping assembly sweeping the dust separating assembly is arranged below the dust separating assembly, the lower end of the installation shaft assembly is arranged at the bottom of the shell, the lower end of the installation shaft assembly is provided with a supporting part, the driving part and the motor, the lower end of the installation shaft assembly is, the driving part controls the driving shaft and the mounting shaft assembly to rotate simultaneously, and the rotation of the mounting shaft assembly drives the dust separation assembly to rotate; the bottom of the shell is a conical ash collecting hopper, and the bottom end of the ash collecting hopper is provided with an ash discharging valve.

Furthermore, the mounting shaft assembly comprises a rotating shaft, a fixing sleeve, a bearing seat, positioning keys and a supporting part, wherein both ends of the fixing sleeve are open, the lower part of the outer wall of the fixing sleeve is fixedly connected with the bottom of the shell, the lower end of the fixing sleeve is provided with the supporting part for fixing and supporting, the rotating shaft is arranged in an inner cavity of the fixing sleeve, both ends of the rotating shaft extend to the outside of both ends of the fixing sleeve, the upper part of the rotating shaft is provided with the bearing seat, a bearing is mounted in the bearing seat, and the outer circumferential wall of the upper end of the rotating shaft and the outer circumferential wall of the; the lower end of the rotating shaft is connected with a driving shaft through a bearing, and the driving shaft is connected with a driving part.

Further, the supporting part comprises a lower pressing cover and a supporting frame, the lower pressing cover is disc-shaped, a rotating shaft installation through hole is formed in the center of the lower pressing cover, and the supporting frame which plays a supporting role is arranged at the bottom of the lower pressing cover.

Further, the driving part is in gear transmission.

Further, dust separation subassembly includes grid board, arc fixed plate, goes up filtration membrane, filtration membrane and mounting hole one, the grid board is "ten" font, "ten" font grid board constitutes the disc with four arc fixed plates, and the center department of grid board is equipped with mounting hole one, mounting hole one is pegged graft through the positioning key with installation axle subassembly upper end, and the grid board constitutes four fan-shaped spaces with four arc fixed plates, and the upper surface in every fan-shaped space is equipped with filtration membrane, and the lower surface is equipped with filtration membrane, the grid board communicates with each other with the casing inner chamber.

Further, the blowing component comprises a blowing disc, an air outlet hole, a second mounting hole, a compressed air pump, a main gas conveying pipeline, a secondary gas conveying pipeline and a hurricane whistle, wherein the second mounting hole fixedly connected with the outer wall of the bearing seat is formed in the center of a cavity in the blowing disc, a plurality of positioning keys are arranged on the outer circumferential wall of the bearing seat, and the second mounting hole is spliced with the positioning keys; the device comprises a blowing disc, a compressed air pump, a gas conveying main pipeline and a plurality of gas conveying auxiliary pipelines, wherein the compressed air pump is arranged on one side of the blowing disc, the inner cavity of the blowing disc is provided with the gas conveying main pipeline and the plurality of gas conveying auxiliary pipelines, each gas conveying auxiliary pipeline is respectively connected with the gas conveying main pipeline, the gas conveying main pipeline is connected with the compressed air pump, the gas conveying auxiliary pipelines are provided with a plurality of hurricane whistles, and each hurricane whistle corresponds to an air outlet hole of the top wall of the blowing disc.

Furthermore, the hurricane whistle comprises a hurricane nozzle, an accelerating straight cylinder and a variable diameter section, the upper end of the accelerating straight cylinder is provided with the hurricane nozzle, the lower end of the accelerating straight cylinder is provided with the variable diameter section with a narrow upper part and a wide lower part, and the lower end of the variable diameter section is connected with the gas delivery auxiliary pipeline.

Furthermore, the filtering membrane is a thin film formed by crossing n nanofiber integrated bundles.

The invention has the beneficial effects that:

1. according to the dust collecting device, the rotary dust separating component is arranged, so that after dust is contacted with the filtering membrane, centrifugal force is generated through rotation of the dust separating component, the dust attached to the filtering membrane is thrown into the shell, and finally the dust is collected through the dust collecting hopper at the bottom of the shell, large-particle and viscous sintering dust can be collected in advance at the tail flue of the sintering machine, the dust is closely contacted with fibers, the dust capturing capacity is greatly improved, the working efficiency of the rear end electric dust collector is guaranteed, and the energy consumption of equipment such as power consumption and water consumption is reduced.

2. The lower part of the dust separation component is provided with the blowing component, the blowing component is internally provided with a plurality of hurricane nozzles, and the hurricane nozzles blow the dust separation component through the delivery of compressed air, so that the filtering membrane is prevented from being blocked and the collection and separation effects are prevented from being influenced.

3. The dust separation component is also provided with a grating plate to prevent the filtering membrane from being blocked seriously, ensure the ventilation property in the shell and prevent the fan from being blocked and damaging the normal operation of the equipment.

4. Because the upper filtering membrane and the lower filtering membrane are arranged on the dust separation component, the contact area of the dust separation component and the dust is increased, the dust in the flue gas can be fully collected, and the separation effect is improved.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic structural view of the mounting shaft assembly;

FIG. 3 is a front view of the dust separation assembly;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a top view of the purge assembly;

FIG. 6 is a schematic view of the internal structure of the purge module;

fig. 7 is a schematic view of the structure of a hurricane whistle.

In the figure:

the device comprises a shell 1, a dust separation component 2, a grating plate 21, an upper filtering membrane 22, a flange 23, a first mounting hole 24, a lower filtering membrane 25, an arc-shaped fixing plate 26, a blowing component 3, a blowing disc 31, an air outlet 32, a second mounting hole 33, a compressed air pump 34, a main gas conveying pipeline 35, a sub gas conveying pipeline 36, a hurricane whistle 37, a hurricane nozzle 371, an accelerating straight cylinder 372, a diameter-variable section 373, a shaft component 4, a rotating shaft 41, a fixing sleeve 42, a bearing seat 43, a positioning key 44, an upper gland 5, a supporting component 6, a lower gland 61, a supporting frame 62, a bearing 7, an driving shaft 8, a driving component 9, a motor 10, a smoke outlet 11 and a dust discharge valve 12.

Detailed Description

The dust collecting device with a filter screen at the tail of a sintering machine capable of purging according to the invention is described in detail below with reference to the attached drawings of the specification.

As shown in fig. 1 to 6, the dust collecting device with a filter screen capable of purging a sintering machine tail belt comprises a shell 1, a dust separating component 2, a purging component 3, a mounting shaft component 4, a driving component 9, a motor 10 and an ash discharging valve 12, wherein the shell 1 is internally provided with a cavity, the upper end of the shell 1 is a smoke inlet, two sides of the lower part of the shell are respectively provided with a smoke outlet 11, the shell 1 is internally provided with the dust separating component, the purging component and the mounting shaft component, and the dust separating component 2 is used for throwing dust in the smoke entering the shell from a smoke inlet into a collecting cavity at the lower part of the shell by the acceleration generated by the rotation of the dust separating component after the dust falls. The dust separation component 2 is a disc formed by a grating plate 21 and a filtering membrane, the filtering membrane is a gas film formed by intersecting n nanofiber integrated bundles, the means is a mature technology at present, and a technical scheme for manufacturing the filtering membrane is also disclosed in a published patent and is not described too much. The dust separation assembly 2 and the upper end of the mounting shaft assembly 4 are sleeved, a purging assembly for purging the dust separation assembly is arranged below the dust separation assembly, the lower end of the mounting shaft assembly 4 is arranged at the bottom of the shell 1, a supporting part 6, a driving part 9, a driving shaft 8 and a motor 10 are arranged at the lower end of the mounting shaft assembly 4, the lower end of the mounting shaft assembly is connected with the driving shaft through a bearing, a main shaft of the motor is connected with the driving part, the driving part controls the driving shaft and the mounting shaft assembly to rotate simultaneously, and the rotation of the mounting shaft assembly drives the dust separation assembly 2 to rotate; the bottom of the shell 1 is a conical dust collecting hopper, a dust discharging valve is arranged at the bottom end of the dust collecting hopper, and dust collected at the bottom of the shell is regularly and intensively cleaned through the dust discharging valve.

As shown in fig. 1 and 2, the installation shaft assembly 4 includes a rotation shaft 41, a fixing sleeve 42, a bearing seat 43, a positioning key 44 and a supporting component 45, the two ends of the fixing sleeve 42 are both opened, the lower part of the outer wall is fixedly connected with the bottom of the housing 1, the lower end of the fixing sleeve is provided with the supporting component 45 for fixing and supporting, the rotation shaft 41 is arranged in the inner cavity of the fixing sleeve 42, the two ends of the rotation shaft 41 are both extended to the outside of the two ends of the fixing sleeve, the bearing seat 43 is arranged on the upper part of the rotation shaft 41, a bearing is arranged in the bearing seat 43, the bearing seat is arranged, the rotation of the rotation shaft is not influenced, the blowing component is also ensured to be fixedly arranged outside the rotation shaft, the dust separation component. The outer circumferential wall of the upper end of the rotating shaft and the outer circumferential wall of the bearing seat are respectively provided with a plurality of positioning keys for positioning; the lower end of the rotating shaft 41 is connected with a driving shaft 8 through a bearing, and the driving shaft 8 is connected with a driving part 9; the upper end of the rotating shaft is also provided with an upper gland 5 for protection. The driving part 9 is in gear transmission, the motor rotating shaft drives the driving gear to rotate, the driving gear is meshed with the driven gear, the driven gear is driven to rotate, the driven gear is fixedly connected with the lower end of the driving shaft, the driving shaft rotates simultaneously when the driven gear rotates, finally, the rotating shaft 41 is controlled to rotate through the rotation of the driving shaft, the dust separation assembly sleeved on the upper end of the rotating shaft rotates together, dust adsorbed by the filtering membrane is thrown into the inner cavity of the shell, and the dust is collected through a dust collecting hopper at the bottom of the shell.

The supporting part 6 comprises a lower pressing cover 61 and a supporting frame 62, the lower pressing cover is disc-shaped, a rotating shaft installation through hole is formed in the center of the lower pressing cover, the supporting frame which plays a supporting role is arranged at the bottom of the lower pressing cover, and the lower pressing cover is connected with the fixing sleeve through a plurality of screws. When the lower pressure cover is installed, the central through hole of the lower pressure cover passes through the lower end of the rotating shaft 41 and abuts against the lower end of the fixing sleeve 42, and then the lower pressure cover is installed on the fixing sleeve through screws.

As shown in fig. 3 and 4, the dust separation assembly 2 includes a grid plate 21, an arc-shaped fixing plate 26, an upper filtering membrane 22, a lower filtering membrane 25 and a first mounting hole 24, the grid plate is "cross", the grid plate and four arc-shaped fixing plates form a circular disc, a first mounting hole is formed in the center of the grid plate, the first mounting hole is inserted into the upper end of the mounting shaft assembly through a positioning key 44, the grid plate 21 and four arc-shaped fixing plates form four fan-shaped spaces, the upper surface of each fan-shaped space is provided with the upper filtering membrane 22, the lower surface of each fan-shaped space is provided with the lower filtering membrane 25, and the grid plate is communicated with the inner cavity of. The upper filtering membrane 22 is mounted between the arc-shaped fixing plate 26 and the grating plate 21 by a plurality of flanges 23. The grid plate is communicated with the inner cavity of the shell, so that the air permeability is ensured, and the fan is prevented from being damaged due to blockage. A circulation space is formed between the upper filtering membrane 22 and the lower filtering membrane 25, the contact area of the upper filtering membrane and dust is increased, the arc-shaped edge of the upper filtering membrane or the lower filtering membrane is fixed with the arc-shaped fixing plate through a flange, and the two straight edges are respectively connected with the adjacent side edges of the grating plates through flanges. The rotation axis 41 of installation axle subassembly 4 rotates and drives the dust separation subassembly and rotate simultaneously, produces centrifugal force and gets rid of the dust that falls on filtration membrane to the casing in, the dust falls to the dust hopper of bottom in through the action of gravity. The dust separation assembly increases the contact area with dust by arranging the upper filtering membrane and the lower filtering membrane, and improves the separation effect.

As shown in fig. 5 and 6, the purging assembly 3 includes a purging plate 31, an air outlet 32, a second mounting hole 33, a compressed air pump 34, a main gas conveying pipeline 35, a secondary gas conveying pipeline 36 and a hurricane whistle 37, the second mounting hole 33 fixedly connected with the outer wall of the bearing seat is arranged in the center of the inner cavity of the purging plate 31, the outer circumferential wall of the bearing seat is provided with a plurality of positioning keys, and the second mounting hole is inserted into the positioning keys; bearing frame is motionless when rotation axis 41 rotates, sweeps subassembly fixed mounting outside the rotation axis, sweeps the rotatory dust separation subassembly in upper portion, blocks up when preventing that dust separation subassembly from adsorbing the dust. One side of the blowing disc 31 is provided with a compressed air pump 34, the inner cavity of the blowing disc is provided with a gas conveying main pipeline 35 and a plurality of gas conveying auxiliary pipelines 36, each gas conveying auxiliary pipeline is respectively connected with the gas conveying main pipeline, the gas conveying main pipeline is connected with the compressed air pump, the gas conveying auxiliary pipelines are provided with a plurality of hurricane whistle, and each hurricane whistle corresponds to the air outlet 32 of the top wall of the blowing disc.

As shown in FIG. 7, the hurricane whistle 37 comprises a hurricane nozzle 371, an accelerating straight cylinder 372 and a variable diameter section 373, wherein the hurricane nozzle is arranged at the upper end of the accelerating straight cylinder, the variable diameter section with a narrow upper part and a wide lower part is arranged at the lower end of the accelerating straight cylinder, and the lower end of the variable diameter section is connected with the gas delivery auxiliary pipeline. The high-flow compressed air is conveyed into each auxiliary pipeline through the main pipeline, the variable-diameter section of the hurricane whistle enables the gas pressure to be fast, and the high-flow compressed air is blown out through the sharp nozzle holes in the pipelines by the aid of the accelerating diameter cylinder and the compressed air pump in a matched mode, so that the blocked part of the dust separator is removed instantly. The blockage part of the dust separator is removed instantly, so that the dust accumulation is reduced, and the gas separator is prevented from being blocked.

In the flue gas got into the casing by the flue gas import of casing 1 upper end, the dust was attached to and is collected on last filtration membrane 22 under the effect of gravity, the part does not have the flue gas through collecting and can follow the gap play in the 2 outsides of dust separating assembly, can contact with lower filtration membrane 25 simultaneously, through the characteristic that fibre membrane adsorption efficiency is strong, the dust in the flue gas of scurrying can adsorb on lower filtration membrane, dust separating assembly is rotatory under the control of motor, throw away the dust of attaching to on upper and lower filtration membrane in the pivoted, finally by the collection ash bucket of casing lower part and collect. The upper filtering membrane and the lower filtering membrane can be used for fully collecting dust in the flue gas, so that the separation effect is improved.

The dust collecting device can better collect dust, reduce the performance of cathode wire bonding dust, improve the contact rate of the dust and fibers, greatly improve the dust catching capacity, and simultaneously ensure the working efficiency of the wet electric dust collector so as to ensure that the wet electric dust collector reaches the emission standard required by the local environmental protection department.

While the foregoing is directed to the principles of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Other technical features than those described in the specification are known to those skilled in the art.