CN105642035B - Sack cleaner and sack cleaner abat-vent - Google Patents

Abstract

A kind of sack cleaner includes ash bucket,Filter device,Lower clapboard,Discharge chamber,Upper spacer,Deashing device,Exhaust apparatus,The upper port of ash bucket and the lower port of filter device are tightly connected,It is separated between ash bucket and filter device with lower clapboard,Multiple through-holes are set on lower clapboard,Through-hole is equably covered with lower clapboard,The upper port of filter device is tightly connected with discharge chamber,It is separated between filter device and discharge chamber with upper spacer,Upper spacer sets through-hole corresponding with lower clapboard,Sack cleaner further includes sack cleaner abat-vent,Sack cleaner abat-vent is arranged on the inner wall above the air inlet of ash bucket,Projection covering air inlet of the sack cleaner abat-vent on air inlet direction,Enter the wind direction of ash bucket for changing exhaust gas,Reduce wind speed,And speed reduces after the hard particles object in exhaust gas bumps against sack cleaner abat-vent,And then it is fallen in ash bucket by gravity.

Description

Bag filter and bag filter windshield device

technical field

The invention relates to the field of environmental protection machinery, in particular to a bag-type dust collector and a windshield device for the bag-type dust collector.

Background technique

The bag filter is a dry dust filter device. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-woven felt, and uses the filter function of the fiber fabric to filter the dusty gas. When the dusty gas enters the bag filter, the dust with large particles and large specific gravity will When the air containing fine dust passes through the filter material, the dust will be blocked and the air will be purified.

In the prior art, the bag filter includes an ash hopper, a filter device, an exhaust device, and a dust removal device. The upper port of the ash hopper is connected to one end of the filter device, and the other end of the filter device is connected to the exhaust device. The dust removal device is arranged on the top, the filter device includes a plurality of filter bags, the dust removal device is used for regular dust removal of the filter bags, the upper end of the filter device is also connected to the exhaust device, and the exhaust device is equipped with a fan to absorb the exhaust gas entering the ash hopper , The ash hopper is provided with an air inlet, the exhaust gas enters the filter device through the air inlet, the exhaust gas is filtered by the filter device, and is discharged through the exhaust device.

The bag filter with the above structure has the following problems during use: 1. Due to the high wind speed of the exhaust gas entering the ash hopper and the small air inlet, the distribution of the exhaust gas entering the filter device is uneven, resulting in different filter bags absorbing dust. 2. The exhaust gas contains hard particles and these particles have edges and corners. These hard particles impact the filter bag at a certain speed for a long time , will cause damage to the filter bag and reduce the service life of the filter bag.

Contents of the invention

In view of this, it is necessary to provide a bag filter and a bag filter windshield device which can distribute the exhaust gas entering the filter device more evenly and have less impact on the filter bag.

A bag-type dust collector includes an ash hopper, a filter device, a lower partition, an exhaust chamber, an upper partition, a dust removal device, and an exhaust device. The upper port of the ash hopper is sealed and connected with the lower port of the filter device. The filter devices are separated by a lower partition, and a plurality of through holes are arranged on the lower partition, and the through holes are evenly covered with the lower partition. The room is separated by an upper partition, the upper partition is provided with a through hole corresponding to the lower partition, the bottom of the ash hopper is provided with an ash discharge port, the outer wall above the ash hopper is provided with an air inlet, and the air inlet is connected with the external air inlet pipe to filter There are multiple filter bags in the device, the filter bags are straight cylindrical, the two ends of the filter bags are respectively matched and connected with the through holes of the upper partition and the lower partition, the other end of the filter bag is connected with the exhaust chamber, and the upper part of the exhaust chamber is set The dust cleaning device is used to regularly remove dust from the filter bag. The side wall of the exhaust chamber is provided with an exhaust port. The exhaust port is sealed and connected to one end of the exhaust device. The exhaust device includes an exhaust pipe, a fan, and one end of the exhaust pipe It is sealed and connected with the exhaust port, and the other end of the exhaust pipe is sealed and connected with the fan, which is used to absorb the exhaust gas in the ash hopper. The bag filter also includes a bag filter windshield device, which is set on On the inner wall above the air inlet of the ash hopper, the projection of the windshield device of the bag filter in the direction of the air inlet covers the air inlet, which is used to change the wind direction of the exhaust gas entering the ash hopper, reduce the wind speed, and prevent the hard particles in the exhaust gas from hitting the air inlet. The speed of the bag filter decreases after the windshield device, and then falls into the ash hopper under the action of gravity.

A wind-shielding device for a bag-type dust collector. The wind-shielding device for the bag-type dust collector includes a flexible wind-shielding pad and a wind-shielding net. Inclined, the upper end of the windshield net is fixed on the inner wall above the air inlet of the ash hopper and pressed against the flexible windshield pad, and the projection of the windshield net and the flexible windshield pad in the direction of the air inlet covers the air inlet so that the ash hopper The wind in the bucket can all be blocked by the flexible windshield pad.

A wind-shielding device for a bag-type dust collector, the wind-shielding device for a bag-type dust collector includes an axial-flow fan blade and an axial-flow fan blade bracket, the axial-flow fan blade bracket is inclined downward, and the upper end of the axial-flow fan blade bracket is fixed On the inner wall above the air inlet of the bucket, the lower end of the axial flow blade bracket is connected to the axial flow blade in rotation. The two ends of the flow fan shaft are connected by rotation. The length of the axial flow fan shaft and the axial flow fan blade is greater than the diameter of the air inlet. The axial flow fan shaft is horizontal and perpendicular to the direction in which the exhaust gas is blown into the ash hopper. The long side of the blade is vertically fixedly connected with the axis of the axial flow fan blade, and the projection of the axial flow fan blade in the direction of the air inlet covers the air inlet, so that the wind entering the ash hopper can be completely blocked by the axial flow fan blade, and the axial flow wind blade The projection of the blade shaft in the direction of the air inlet is biased toward the upper end of the air inlet, so that the exhaust gas moves downward.

A wind-shielding device for a bag-type dust collector. The wind-shielding device for the bag-type dust collector includes a centrifugal blade and a centrifugal blade bracket. The centrifugal blade bracket is inclined downward, and one end of the centrifugal blade bracket is fixed above the air inlet of the ash hopper On the inner wall of the centrifugal blade bracket, the other end of the centrifugal blade bracket is connected to the centrifugal blade, the centrifugal blade includes a centrifugal blade shaft, a centrifugal blade disk, a centrifugal blade blade, a centrifugal blade ring, and one end of the centrifugal blade bracket is connected to the centrifugal blade. One end of the fan shaft is connected, and the other end of the centrifugal fan shaft is connected to the center of the centrifugal fan disc. At least three centrifugal fan blades are fixed on the circumference of the centrifugal fan disc. The upper end of the centrifugal fan blade is connected to the centrifugal fan blade. The discs are vertically connected, the lower end of the centrifugal fan blade is vertically connected with the centrifugal fan ring, the outer side of the lower end of the centrifugal fan blade is connected with the outer edge of the centrifugal fan ring, and the inner side of the lower end of the centrifugal fan blade is connected with the inner edge of the centrifugal fan ring There is a certain angle between the short side of the centrifugal fan blade and the radius of the centrifugal fan ring, and the projection of the centrifugal fan blade in the direction of the air inlet covers the air inlet, so that the wind entering the ash hopper can be completely absorbed by the centrifugal fan. Leaf blocks.

Compared with the prior art, the above-mentioned bag filter and bag filter windshield device are blocked by the bag filter windshield after the waste gas enters the ash hopper, and the hard particles in the waste gas and the waste gas will move obliquely downward and When the speed decreases, the heavier hard particles will fall to the bottom of the ash hopper under the action of gravity, and when the lighter hard particles pass through the filter device, the impact on the filter bag will also be greatly reduced, so that the damage to the filter bag will also be greatly reduced , thereby prolonging the service life of the filter bag, and at the same time, the distribution of the exhaust gas in the ash hopper will be more uniform, the cleaning period of the filter device will be extended, and energy consumption will be saved.

Description of drawings

Fig. 1 is a schematic structural diagram of a bag filter in a preferred embodiment.

Fig. 2 is a structural schematic diagram of a windshield device of a bag filter including a flexible windshield pad.

Fig. 3 is a structural schematic diagram of the windshield device of the bag filter including axial flow blades.

Fig. 4 is a diagram showing the connection relationship between the axial flow fan blade and the axial flow fan blade support of the windshield device of the bag filter.

Fig. 5 is a schematic structural diagram of the windshield device of the bag filter including centrifugal fan blades.

Fig. 6 is a diagram showing the connection relationship between the centrifugal fan blade and the centrifugal fan blade bracket of the windshield device of the bag filter.

In the figure: ash hopper 10, ash outlet 101, air inlet 102, filter device 20, filter bag 201, lower partition 30, exhaust cavity 40, exhaust port 401, upper partition 50, dust removal device 60, exhaust Gas device 70, exhaust pipe 701, fan 702, windshield device 80, flexible windshield pad 803, windshield net 804, axial flow fan blade 805, axial flow fan blade shaft 8051, axial flow fan blade blade 8052, axial flow Fan blade bracket 806, centrifugal fan blade 807, centrifugal fan blade shaft 8071, centrifugal fan blade blade 8072, centrifugal fan blade disc 8073, centrifugal fan blade ring 8074.

Detailed ways

Referring to Fig. 1, the bag filter includes an ash hopper 10, a filter device 20, a lower partition 30, an exhaust cavity 40, an upper partition 50, a dust removal device 60, an exhaust device 70, and the upper port of the ash hopper 10 is connected to the The lower port of the filter device 20 is sealed and connected, the ash hopper 10 and the filter device 20 are separated by a lower partition 30, and a plurality of through holes are arranged on the lower partition 30, and the through holes are evenly covered with the lower partition 30, and the filter device The upper port of 20 is sealed and connected with the exhaust chamber 40, the filter device 20 and the exhaust chamber 40 are separated by an upper partition 50, the upper partition 50 is provided with a through hole corresponding to the lower partition 30, and the bottom of the ash hopper 10 is provided with The ash outlet, the outer wall above the ash hopper 10 is provided with an air inlet 102, the air inlet 102 is connected with the air inlet pipe of the outside world, and a plurality of filter bags 201 are arranged in the filter device 20, and the filter bags 201 are straight cylinders. The two ends are respectively matched and connected with the through holes of the upper partition 50 and the lower partition 30, and the other end of the filter bag 201 is connected with the exhaust chamber 40, and a dust cleaning device 60 is arranged above the exhaust chamber 40 for regularly removing dust from the filter bag 201. , the side wall of the exhaust cavity 40 is provided with an exhaust port, and the exhaust port is sealed and connected with one end of the exhaust device 70. Sealed connection, the other end of the exhaust pipe 701 is sealed with the fan 702, used to absorb the waste gas in the ash hopper 10, the bag filter also includes the above-mentioned bag filter windshield device 80, bag filter windshield device 80 Set 80 on the inner wall above the air inlet 102 of the ash hopper 10, the projection of the bag filter windshield device 80 in the direction of the air inlet 102 covers the air inlet 102, and is used to change the wind direction of the exhaust gas entering the ash hopper 10 and reduce the wind speed. Moreover, the hard particles in the exhaust gas hit the windshield device 80 of the bag filter and the speed decreases, and then fall into the ash hopper 10 under the action of gravity. The structure of the ash hopper 10 is a conical shape with a large top and a small bottom to facilitate ash discharge.

Please refer to Fig. 2. In Embodiment 1, the windshield device 80 of the bag filter includes a flexible windshield pad 803 and a windshield net 804. On the inner wall, the windshield net 804 is inclined downward, and the upper end of the windshield net 804 is fixed on the inner wall above the air inlet 102 of the ash hopper 10 and pressed on the top of the flexible windshield pad 803, the windshield net 804 and the flexible windshield pad 803 The projection in the direction of the air inlet 102 covers the air inlet 102 so that all the wind entering the ash hopper 10 can be blocked by the flexible windshield pad 803 . Due to the flexible nature of the flexible windshield pad 803, the exhaust gas from the air inlet 102 is more likely to change from the original laminar flow state to a turbulent flow state after passing through the flexible windshield pad 803, so that the wind direction is more dispersed, and the exhaust gas distribution in the ash hopper 10 It is more uniform, and at the same time, the flexible windshield pad 803 can play a certain buffering role, so that the impact received by itself will be reduced.

Please refer to Fig. 3 and Fig. 4, in Embodiment 2, the windshield device 80 of the bag filter includes an axial flow vane 805, an axial flow vane support 806, the axial flow vane support 806 is inclined downward, and the axial flow The upper end of the fan blade bracket 806 is fixed on the inner wall above the air inlet 102 of the ash hopper 10, and the lower end of the axial flow fan bracket 806 is rotatably connected with the axial flow fan 805. The axial flow fan 805 includes an axial flow fan shaft 8051, The axial fan blade 8052, the lower end of the axial fan bracket 806 is rotationally connected with the two ends of the axial fan shaft 8051, the length of the axial fan shaft 8051 and the axial fan blade 8052 is greater than the diameter of the air inlet 102, The shaft 8051 of the axial flow fan is horizontal and perpendicular to the direction in which the waste gas is blown into the ash hopper 10. The long side of the axial flow fan blade 8052 is vertically fixedly connected to the shaft 8051 of the axial flow fan. The axial flow fan 805 is in the direction of the air inlet 102 The projection of the projection covers the air inlet 102, so that the wind entering the ash hopper 10 can be completely blocked by the axial flow fan shaft 805, and the projection of the axial flow fan shaft 8051 in the direction of the air inlet 102 is biased towards the upper end of the air inlet 102, so that the exhaust gas Downward movement.

The axial flow fan 805 changes the direction of the exhaust gas entering the ash hopper 10, and at the same time, the hard particles will hit the axial flow fan blade 8052, which will not cause damage to the filter bag 201, and the airflow impacts the axial flow fan blade 8052 At this time, the axial flow fan blade 8052 will also rotate itself, so that the direction of the airflow is more diverse, so that the distribution of the exhaust gas in the ash hopper 10 is more uniform.

Please refer to Fig. 5 and Fig. 6, in embodiment 3, described bag filter windshield device 80 comprises centrifugal fan blade 807, centrifugal fan blade bracket 808, and centrifugal fan blade bracket 808 is inclined downward, and centrifugal fan blade bracket 808 One end is fixed on the inner wall above the air inlet 102 of the ash hopper 10, and the other end of the centrifugal fan bracket 808 is connected with the centrifugal fan 807. The centrifugal fan 807 includes a centrifugal fan shaft 8071, a centrifugal fan disc 8073, a centrifugal Fan blade blade 8072, centrifugal fan blade ring 8074, one end of centrifugal fan blade support 807 is connected with one end of centrifugal fan blade shaft 8071, the other end of centrifugal fan blade shaft 8071 is connected with the center of centrifugal fan blade disc 8073, and the centrifugal fan blade At least three centrifugal fan blades 8072 are fixed on the circumference of the disk 8073, the upper end of the centrifugal fan blade 8072 is vertically connected with the centrifugal fan disc 8073, the lower end of the centrifugal fan blade 8072 is vertically connected with the centrifugal fan ring 8074, and the centrifugal fan blade The outside of the lower end of the blade 8072 is connected to the outer edge of the centrifugal fan ring 8074, the inner side of the lower end of the centrifugal fan blade 8072 is connected to the inner edge of the centrifugal fan ring 8074, and the short side of the centrifugal fan blade 8072 is connected to the outer edge of the centrifugal fan ring 8074. The radius has a certain included angle, and the projection of the centrifugal blade 807 in the direction of the air inlet 102 covers the air inlet 102, so that the wind entering the ash hopper 10 can be completely blocked by the centrifugal blade 807.

After the airflow passes through the centrifugal fan blade 807, the wind direction is closer to the horizontal direction on the plane where the centrifugal fan blade disk 8073 is located, and the upward airflow will be blocked after passing through the centrifugal fan blade disk 8073 and the centrifugal fan blade 8072, so that the airflow is vertically There is less airflow in the direction, and the airflow is dispersed in the horizontal direction, so the distribution of exhaust gas in the ash hopper 10 is more uniform.

The scope of protection of the present invention is not limited to the examples. All technical solutions obtained by technical personnel through logical analysis, inference and equivalent replacement in the prior art according to the idea of the present invention all belong to the scope of protection in the claims.

Claims (1)

1. a kind of sack cleaner includes ash bucket, filter device, lower clapboard, discharge chamber, upper spacer, deashing device, exhaust apparatus, The upper port of ash bucket and the lower port of filter device are tightly connected, and are separated between ash bucket and filter device with lower clapboard, lower clapboard The upper multiple through-holes of setting, through-hole are equably covered with lower clapboard, and upper port and the discharge chamber of filter device are tightly connected, filter device It is separated between discharge chamber with upper spacer, upper spacer sets through-hole corresponding with lower clapboard, hopper bottom setting ash discharging hole, ash bucket Air inlet is set on the outer wall of top, and air inlet is connect with extraneous intake stack, the multiple filter bags of setting, mistake in filter device Filter bag is straight-tube shape, and the both ends of filter bag match connection with the through-hole of upper spacer and lower clapboard respectively, the other end of filter bag with Discharge chamber connects, setting deashing device above discharge chamber, for dedusting regular to filter bag, the side wall setting exhaust of discharge chamber Mouthful, one end of exhaust outlet and exhaust apparatus is tightly connected, and exhaust apparatus includes exhaust pipe, wind turbine, one end of exhaust pipe and exhaust Mouth is tightly connected, and the other end and the wind turbine of exhaust pipe are tightly connected, for drawing the exhaust gas in ash bucket, it is characterised in that：Pocket type Deduster further includes sack cleaner abat-vent, and sack cleaner abat-vent is arranged on the inner wall above the air inlet of ash bucket On, projection of the sack cleaner abat-vent on air inlet direction covers air inlet, and the wind of ash bucket is entered for changing exhaust gas To, reduce wind speed, and the hard particles object in exhaust gas bumps against speed after sack cleaner abat-vent and reduces, and then by gravity Effect is fallen in ash bucket, and the sack cleaner abat-vent includes centrifugation blade, centrifugation blade stent, centrifugation blade stent Tilt down, one end of centrifugation blade stent is fixed on the inner wall above the air inlet of ash bucket, centrifugation blade stent it is another End is connect with centrifugation blade, and centrifugation blade includes centrifugation blade axis, centrifugation blade disk, centrifugation blade blade, centrifugation blade ring, from One end of heart blade support is connect with one end of centrifugation blade axis, and the other end of centrifugation blade axis turns with the center of centrifugation blade disk It is dynamic to connect, at least fixed three pieces centrifugation blade blade on the circumference of centrifugation blade disk, upper end and the centrifugation wind of centrifugation blade blade Leaf dish vertical connection, the lower end of centrifugation blade blade and centrifugation blade ring vertical connection, the outside of centrifugation blade blade lower end with The outer edge connection of centrifugation blade ring, the inside of centrifugation blade blade lower end are connect with the inside edge of centrifugation blade ring, centrifuge wind The short side of leaf blade and the radius of centrifugation blade ring have certain angle, projection of the centrifugation blade on air inlet direction cover into Air port is all blocked so that the wind energy entered in ash bucket is enough by centrifugation blade.