Bag-type dust collector

Abstract

The utility model relates to the technical field of bag-type dust removers, in particular to a bag-type dust remover which comprises a shell, the top end of the shell is communicated with an exhaust port, a compartment rotation switching mechanism comprises six filtering chambers distributed in a honeycomb shape, and an air inlet pipe is fixedly connected to the lower portion of the outer wall of the shell. The control system controls and starts the corresponding pulse blowing pipes to blow downwards to form reverse airflow and strip a dust layer on the surface of the filter bag, the vibration motor drives the whole filter chamber to shake and shake off deep accumulated dust, the dust cleaning effect is good, the shaken-off dust is collected through the dust hopper, finally, the dust is discharged from the dust discharging pipe by opening the dust discharging valve, the pneumatic fluidization rod is started, the airflow enables the dust to be fluidized, and the dust cleaning effect is good. According to the invention, hardening and bridging are prevented, blockage of the ash hopper is avoided, manual knocking intervention is not needed, the safety is high, different filter chambers can be switched to enter a filter mode, and the other filter chambers sequentially enter an ash removal state, so that the device can work continuously without shutdown, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cloth bag dust catcher technical field, specifically is a cloth bag dust catcher. BACKGROUND

[0002] Cloth bag dust catcher is a kind of dust collector commonly used in steel industry, and it is also called filter dust collector, which is a kind of dry high-efficiency dust collector, which uses bag filter element made of fiber woven fabric to capture solid particles in dust-containing gas.The working principle is that dust particles are intercepted by fiber collision due to inertial force when passing through filter cloth fibers;

[0003] In the steelmaking process, high temperature, high humidity and strong corrosive smoke are generated, and the filter bag of the traditional dust collector is easy to be cemented, and the airflow distribution is uneven when the traditional pulse blowing ash is blown, there is an ash cleaning blind area, and the ash cleaning efficiency is low, and the machine needs to be stopped for ash cleaning, repeated shutdown for ash cleaning greatly reduces the working efficiency;In addition, the humidity of steelmaking dust is high (dew point temperature 60-80 DEG C), the inner wall of ordinary conical ash bucket is easy to dew, the adhesion of dust after moisture absorption increases dramatically, manual knocking intervention is required, which is inconvenient to use and has safety hazards. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of cloth bag dust catcher, with the characteristics of no need to stop ash cleaning, high ash cleaning efficiency, can prevent dust blockage, high safety, long service life.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of cloth bag dust catcher, including shell, the top of the shell is communicated with exhaust port;

[0006] Chamber rotating switching mechanism, the chamber rotating switching mechanism includes six filter chambers distributed in honeycomb shape, the lower outer wall of the shell is fixedly connected with inlet pipe, the inlet pipe is L-shaped structure and vertical section is rotationally connected with rotating guide pipe by rotary valve, the vertical section center of the inlet pipe coincides with the center point of multiple filter chambers, the rotating path of the rotating guide pipe away from the one end of inlet pipe coincides with the ring where multiple filter chambers are located, the outer wall of the rotating guide pipe is fixedly connected with first gear, the vertical section outer wall of the inlet pipe is installed with motor, the output end of the motor is fixedly connected with second gear meshing with first gear;

[0007] Ash cleaning mechanism, the ash cleaning mechanism includes vibration motor installed on the outer wall of multiple filter chambers, the inner wall of the shell is fixedly installed with multiple pulse jet pipes by support, multiple pulse jet pipes are located directly above multiple filter chambers respectively, air compressor is installed on the outer wall of the shell, multiple pulse jet pipes are all communicated with air compressor by pipeline;

[0008] The ash collecting mechanism comprises a dust hopper fixedly connected to the bottom end of the inner part of the shell, the inner wall of the dust hopper is provided with a plurality of pneumatic fluidization rods, the bottom end of the dust hopper is communicated with an ash discharging pipe extending to the lower part of the shell, and the inner part of the ash discharging pipe is provided with an ash discharging valve.

[0009] As one of the utility model's bag type dust collector, the inside of the filter chamber is provided with a plurality of filter bags, the filter bag is composed of glass fiber film layer and stainless steel spiral framework, the adjacent two of the plurality of filter chambers are connected through connecting rods, and the connecting rod and the filter chamber are fixedly connected with a plurality of springs.

[0010] As one of the utility model's bag type dust collector, the vertical section of the air inlet pipe is fixedly connected with three guide plates staggered from bottom to top, the inclination angles of the three guide plates from bottom to top are 15 DEG, 30 DEG and 45 DEG respectively, and the outer wall of the guide plate is coated with a tungsten carbide wear-resistant coating.

[0011] As one of the utility model's bag type dust collector, the outer wall of the shell is provided with a cold air machine, the cold air machine and the air inlet pipe are communicated with a wind guide pipe, the outer wall of the wind guide pipe is provided with a valve, and the inner part of the air inlet pipe is provided with a temperature sensor.

[0012] As one of the utility model's bag type dust collector, the ends of the plurality of pneumatic fluidization rods are connected with external compressed air pipes.

[0013] As one of the utility model's bag type dust collector, the outer wall of the rotating guide pipe is fixedly connected with a guide cover, and the first gear, the motor and the second gear are all located below the guide cover.

[0014] As one of the utility model's bag type dust collector, the motor, the vibration motor, the cold air machine, the air compressor and the temperature sensor are all electrically connected with an external control system.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The motor drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear is fixed on the outer wall of the rotating guide pipe, so that the guide position of the rotating guide pipe can be rotated, different filter chambers can be switched into the filtering mode, and the remaining filter chambers can be sequentially switched into the ash cleaning state, so that uninterrupted work can be realized without shutdown, and the working efficiency is improved.

[0017] When cleaning dust, the control system controls the corresponding pulse jet pipe to spray downward to form a reverse airflow, which peels off the dust layer on the surface of the filter bag, and the vibration motor drives the whole filter chamber to shake to shake off the deep dust, the dust is collected through the ash bucket, and finally the ash discharge valve is opened to discharge the dust from the ash discharge pipe, the pneumatic fluidization rod is started, the airflow makes the dust flow, prevents the dust from being caked and bridged, avoids the ash bucket from being blocked, and manual knocking intervention is not needed, so that the safety is high;

[0018] The high-temperature flue gas is conveyed from the steelmaking furnace to the air inlet pipe through the flue, and sequentially passes through three guide plates after passing through the air inlet pipe, the lowermost guide plate preliminarily reduces the flow velocity of the flue gas and guides the airflow to diffuse downward, avoiding direct impact on the filter bag, the middle guide plate further uniformly distributes the airflow, and the uppermost guide plate guides the flue gas to the rotating guide pipe, the airflow velocity is increased, inertia separation of part of large particle dust is utilized, and the large particle dust is prevented from depositing on the surface of the guide plate, the three-stage guide plate reduces turbulence, and in cooperation with the rotating guide pipe, local airflow caused by too fast airflow can be avoided to cause filter bag abrasion. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiment of the present application or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0020] Figure 1 It is a whole front view structure diagram of the present application.

[0021] Figure 2 It is a partial view structure diagram of the present application.

[0022] Figure 3 It is a guide mechanism sectional view structure diagram of the present application.

[0023] Figure 4 It is a hopper three-dimensional structure diagram of the present application.

[0024] Figure 5 It is a guide cover three-dimensional structure diagram of the present application.

[0025] Marked in the drawing: 1, shell; 2, filter chamber; 3, air inlet pipe; 4, rotating guide pipe; 5, first gear; 6, motor; 7, second gear; 8, vibration motor; 9, support; 10, pulse jet pipe; 11, ash bucket; 12, filter bag; 13, connecting rod; 14, spring; 15, guide plate; 16, pneumatic fluidization rod; 17, ash discharge valve; 18, air cooler; 19, air duct; 20, air outlet; 21, air compressor; 22, guide cover. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be described below in detail with reference to the drawings. The following examples are only used to make the technical scheme of the utility model clearer, and therefore only serve as examples, but cannot limit the protection scope of the utility model.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meanings understood by the technical personnel in the field to which the utility model belongs.

[0028] Please refer to Figures 1 to 5 A cloth bag dust collector, comprising a shell 1, the top end of the shell 1 is communicated with an exhaust port 20;

[0029] The chamber rotating switching mechanism comprises six filter chambers 2 distributed in a honeycomb shape, an air inlet pipe 3 is fixedly connected to the lower outer wall of the shell 1, the vertical section of the air inlet pipe 3 is rotatably connected with a rotating guide pipe 4 through a rotating valve, the center of the vertical section of the air inlet pipe 3 coincides with the center points of the plurality of filter chambers 2, the rotating path of the end of the rotating guide pipe 4 away from the air inlet pipe 3 coincides with the annular ring where the plurality of filter chambers 2 are located, the outer wall of the rotating guide pipe 4 is fixedly connected with a first gear 5, a motor 6 is installed on the outer wall of the vertical section of the air inlet pipe 3, and the output end of the motor 6 is fixedly connected with a second gear 7 engaged with the first gear 5;

[0030] The dust cleaning mechanism comprises a vibration motor 8 installed on the outer wall of the plurality of filter chambers 2, a plurality of pulse blowing pipes 10 are fixedly installed on the inner wall of the shell 1 through a support 9, the plurality of pulse blowing pipes 10 are located directly above the plurality of filter chambers 2 respectively, an air compressor 21 is installed above the outer wall of the shell 1, and the plurality of pulse blowing pipes 10 are all communicated with the air compressor 21 through pipelines;

[0031] The dust collecting mechanism comprises a dust hopper 11 fixedly connected to the bottom end inside the shell 1, a plurality of pneumatic fluidization rods 16 are arranged on the inner wall of the dust hopper 11, the bottom end of the dust hopper 11 is communicated with a dust discharging pipe extending to the lower side of the shell 1, and a dust discharging valve 17 is arranged in the dust discharging pipe.

[0032] In the embodiment, high-temperature flue gas is transported from a steelmaking furnace to the air inlet pipe 3 through a flue, sequentially passes through the three guide plates 15 after passing through the air inlet pipe 3, the lowermost guide plate 15 preliminarily reduces the flow speed of the flue gas and guides the airflow to diffuse downward, avoiding direct impact on the filter bag 12, the middle guide plate further uniformly distributes the airflow, and the uppermost guide plate 15 guides the flue gas to the rotating guide pipe 4, the airflow speed is increased, and inertia separation is used to separate part of large-particle dust (>50 μm), preventing the large-particle dust from depositing on the surface of the guide plate 15, the three-stage guide plate 15 reduces turbulence, and cooperation with the rotating guide pipe 4 can avoid local airflow being too fast to cause abrasion of the filter bag 12;

[0033] Further by rotating the guide tube 4, the flue gas enters one of the filter chamber 2, the flue gas penetrates from the outside to the inside of the filter bag 12, the PTFE film covered by glass fiber intercepts most of the dust, the stainless steel spiral skeleton supports the filter bag 12, prevents deformation and collapse under high temperature, and the purified gas is discharged through the top exhaust port 20;

[0034] The motor 6 drives the second gear 7 to rotate, the second gear 7 drives the first gear 5 to rotate, the first gear 5 is fixed on the outer wall of the rotating guide tube 4, so that the guide position of the rotating guide tube 4 can be rotated, the rotating angle is controlled to be 60 degrees every 15 minutes, different filter chambers 2 are switched into the filtering mode, and the remaining filter chambers 2 are sequentially switched into the ash removal state, so that uninterrupted work can be realized without shutdown, work efficiency is improved, when the ash is removed, the corresponding pulse blowing pipe 10 is started to blow downward under the control of the control system, the reverse airflow is formed, the dust layer on the surface of the filter bag 12 is stripped, the vibration motor 8 (amplitude 3mm, frequency 30Hz) drives the whole filter chamber 2 to vibrate, the deep layer of dust is shaken off, the ash removal effect is good, the shaken-off dust is collected through the ash bucket 11, and finally the ash removal valve 17 is opened to discharge the dust through the dust discharge pipe, the pneumatic fluidization rod 16 is started, the airflow makes the dust flow to be fluidized, prevents the dust from being hardened and bridged, avoids the ash bucket 11 from being blocked, manual knocking intervention is not needed, and safety is high.

[0035] As a technical optimization scheme of the utility model, the inside of the filter chamber 2 is provided with a plurality of filter bags 12, the filter bag 12 is composed of a glass fiber film layer and a stainless steel spiral skeleton, adjacent two of the plurality of filter chambers 2 are connected through a connecting rod 13, and a plurality of springs 14 are fixedly connected between the connecting rod 13 and the filter chamber 2.

[0036] In the embodiment, the flue gas penetrates from the outside to the inside of the filter bag 12, the PTFE film covered by glass fiber intercepts most of the dust, and the stainless steel spiral skeleton supports the filter bag 12 to prevent deformation and collapse under high temperature.

[0037] As a technical optimization scheme of the utility model, the vertical section of the air inlet pipe 3 is fixedly connected with three guide plates 15 staggered from bottom to top, the inclination angles of the three guide plates 15 from bottom to top are 15°, 30° and 45° respectively, and the outer wall of the guide plate 15 is coated with a tungsten carbide wear-resistant coating.

[0038] In the embodiment, the lowermost guide plate 15 preliminarily reduces the flue gas flow rate and guides the airflow to diffuse downward, avoids direct impact on the filter bag 12, the middle guide plate further uniformly distributes the airflow, and the uppermost guide plate 15 guides the flue gas to the rotating guide tube 4, the airflow velocity is improved, part of large particle dust (> 50 μm) is separated by inertia, and the large particle dust is prevented from depositing on the surface of the guide plate 15, the three-stage guide plate 15 reduces turbulence, and the cooperation of the rotating guide tube 4 can avoid that the local airflow is too fast to cause the filter bag 12 to be abraded.

[0039] As a technical optimization scheme of the utility model, the outer wall of the shell 1 is provided with a cold air machine 18 below, a guide pipe 19 is communicated between the cold air machine 18 and the air inlet pipe 3, the outer wall of the guide pipe 19 is provided with a valve, and the inside of the air inlet pipe 3 is provided with a temperature sensor.

[0040] In the embodiment, the temperature sensor can monitor the flue gas temperature (normal range 200-400 DEG C) in real time, if the temperature is over 450 DEG C, the temperature sensor will transmit the signal to the external control system, the external control system controls the cold air machine 18 to open, and the cold air enters the inside of the air inlet pipe 3 to mix and cool down, so that the whole equipment is protected, and the service life is prolonged.

[0041] As a technical optimization scheme of the utility model, the ends of the plurality of pneumatic fluidization rods 16 are connected with external compressed air pipes.

[0042] In the embodiment, the ends of the plurality of pneumatic fluidization rods 16 are connected with external compressed air pipes, when the pneumatic fluidization rod 16 is started, the compressed air flow makes the dust flow state, and prevents hardening and bridging.

[0043] As a technical optimization scheme of the utility model, the outer wall of the rotary guide pipe 4 is fixedly connected with a guide cover 22, the first gear 5, the motor 6 and the second gear 7 are all located below the guide cover 22.

[0044] In the embodiment, the first gear 5, the motor 6 and the second gear 7 are all located below the guide cover 22, which plays a shielding protection role, and avoids that the dust falling off affects normal work.

[0045] As a technical optimization scheme of the utility model, the motor 6, the vibration motor 8, the cold air machine 18, the air compressor 21 and the temperature sensor are all electrically connected with the external control system.

[0046] In the embodiment, the external control system is convenient for operating and controlling the working of each component of the equipment, and the automation degree is high.

[0047] Working principle: high-temperature flue gas is first conveyed from a steelmaking furnace to the air inlet pipe 3 through a flue, sequentially passes through the three guide plates 15 after passing through the air inlet pipe 3, the three-stage guide plate 15 reduces turbulence, cooperates with the rotary guide pipe 4 to avoid that local airflow is too fast to cause the filter bag 12 to wear, further passes through the guide of the rotary guide pipe 4, so that the flue gas enters the inside of one of the filter chambers 2, the flue gas penetrates from the outside to the inside of the filter bag 12, the PTFE membrane covered by glass fiber intercepts most of the dust, the stainless steel spiral skeleton supports the filter bag 12 to prevent deformation and collapse under high temperature, and the purified gas is discharged through the top exhaust port 20;

[0048] The motor 6 drives the second gear 7 to rotate, the second gear 7 drives the first gear 5 to rotate, the first gear 5 is fixed on the outer wall of the rotating guide pipe 4, thereby the guide position of the rotating guide pipe 4 can be rotated, the different filter chambers 2 are switched into the filtering mode every 15 minutes, the remaining filter chambers 2 are sequentially switched into the ash removal state, thereby the uninterrupted work can be realized without shutdown, the work efficiency is improved, when the ash is removed, the corresponding pulse blowing pipe 10 is controlled to blow downward by the control system, the reverse airflow is formed, the dust layer on the surface of the filter bag 12 is stripped, the vibration motor 8 drives the whole filter chamber 2 to shake, the deep ash is shaken off, the ash removal effect is good, the shaken-off dust is collected through the ash hopper 11, and finally the ash discharge valve 17 is opened to discharge the ash from the ash discharge pipe.

[0049] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A baghouse, characterized by: Including the shell (1), the top of the shell (1) is communicated with exhaust port (20); The chamber rotating switching mechanism includes six filter chambers (2) distributed in honeycomb shape, the outer wall of the shell (1) is fixedly connected with an air inlet pipe (3), the air inlet pipe (3) is L-shaped structure and the vertical section is rotatably connected with a rotating guide pipe (4) through a rotating valve, the center of the vertical section of the air inlet pipe (3) coincides with the center point of the plurality of filter chambers (2), the rotating path of the end of the rotating guide pipe (4) away from the air inlet pipe (3) coincides with the ring where the plurality of filter chambers (2) are located, the outer wall of the rotating guide pipe (4) is fixedly connected with a first gear (5), the outer wall of the vertical section of the air inlet pipe (3) is provided with a motor (6), the output end of the motor (6) is fixedly connected with a second gear (7) engaged with the first gear (5); The dust cleaning mechanism includes a vibration motor (8) mounted on the outer wall of the plurality of filter chambers (2), a plurality of pulse blowing pipes (10) are fixedly installed on the inner wall of the shell (1) through a support (9), the plurality of pulse blowing pipes (10) are respectively located directly above the plurality of filter chambers (2), an air compressor (21) is installed above the outer wall of the shell (1), and the plurality of pulse blowing pipes (10) are all communicated with the air compressor (21) through pipelines; The dust collecting mechanism includes a dust hopper (11) fixedly connected to the bottom end of the inside of the shell (1), the inner wall of the dust hopper (11) is provided with a plurality of pneumatic fluidization rods (16), and the bottom end of the dust hopper (11) is communicated with a dust discharge pipe extending to the lower side of the shell (1), and the inside of the dust discharge pipe is provided with a dust discharge valve (17).

2. A baghouse according to claim 1, characterized in that: The inside of the filter chamber (2) is provided with a plurality of filter bags (12), the filter bag (12) is composed of a glass fiber film layer and a stainless steel spiral framework, and the adjacent two of the plurality of filter chambers (2) are connected through a connecting rod (13), and a plurality of springs (14) are fixedly connected between the connecting rod (13) and the filter chamber (2).

3. A baghouse according to claim 1, wherein: The vertical section of the air inlet pipe (3) is fixedly connected with three guide plates (15) staggered from bottom to top, the inclination angles of the three guide plates (15) from bottom to top are 15°, 30° and 45° respectively, and the outer wall of the guide plate (15) is coated with a tungsten carbide wear-resistant coating.

4. A baghouse according to claim 1, wherein: The outer wall of the shell (1) is provided with a cold air machine (18), the cold air machine (18) and the air inlet pipe (3) are communicated through an air guide pipe (19), the outer wall of the air guide pipe (19) is provided with a valve, and the inside of the air inlet pipe (3) is provided with a temperature sensor.

5. A baghouse according to claim 1, wherein: The ends of the plurality of pneumatic fluidization rods (16) are connected with external compressed air pipelines.

6. A baghouse according to claim 1, wherein: The outer wall of the rotating guide pipe (4) is fixedly connected with a guide cover (22), and the first gear (5), the motor (6) and the second gear (7) are all located below the guide cover (22).

7. A baghouse according to claim 4 wherein: The motor (6), the vibration motor (8), the cold air machine (18), the air compressor (21) and the temperature sensor are all electrically connected with an external control system.

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