Complete off-line ash removal type dust removal equipment

Abstract

The invention relates to the technical field of dust removal, and provides complete off-line dust removal type dust removal equipment which comprises a box body, a dust hopper, a cage framework and a cloth bag, the dust hopper is communicated with the bottom of the box body, the cage framework is installed in the box body, the cloth bag is arranged outside the cage framework, the dust hopper is communicated with an air inlet pipe, and the complete off-line dust removal type dust removal equipment further comprises a blowing mechanism, an exhaust assembly, an opening and closing piece and a mechanical cleaning mechanism. The blowing mechanism is used for blowing and cleaning dust on the cloth bag, the exhaust assembly is used for exhausting clean air, the opening and closing part is used for opening and closing the exhaust assembly and the box body, the mechanical cleaning mechanism is used for cleaning the outside of the cloth bag and comprises a cleaning shaft and a cleaning rod, the cleaning shaft is rotatably arranged in the box body, and the cleaning rod is rotatably arranged in the box body. The cleaning shaft rotates around the cage framework, the cleaning rod is fixedly connected to the outside of the cleaning shaft, and the cleaning rod is in contact with the outside of the cloth bag. By means of the technical scheme, the problem that in the prior art, dust is cleaned only in a pulse injection mode, and the dust cleaning effect is limited is solved.

Description

[0001] The present invention relates to the technical field of dust removal, and in particular to a completely off-line dust removal device. Background Art

[0002] Pulse bag dust collectors are divided into two categories according to the cleaning form: online cleaning and offline cleaning. In the online cleaning structure, since cleaning and filtration are carried out simultaneously, some dust will be re-adsorbed on the surface of the bag just after being cleaned out of the bag surface but has not yet fallen into the ash hopper. The suction force of the fan will offset part of the blowing force of the pulse valve, which will significantly affect the cleaning effect. This form is not suitable for dust that is difficult to clean by spraying due to large dust volume, high dust viscosity, high temperature, light dust weight, high corrosiveness, etc., and it is not conducive to non-stop maintenance.

[0003] The structural feature of offline cleaning is that it is divided into N boxes. The air outlet of each box is controlled by a valve to determine whether it is working. The dust-laden air enters the ash hopper of each chamber evenly under the action of the air inlet guide plate of the dust collector. Large particles of dust fall directly into the ash hopper, while finer dust is adsorbed on the outer surface of the filter bag. The clean gas passes through the filter bag into the upper box body and is discharged into the atmosphere through various control valves, fans and chimneys. As the dust on the filter bag accumulates more and more, when the dust on the surface of the bag is needed, the cleaning control device automatically closes a chamber control valve according to the differential pressure or cleaning time, and then opens the pulse valve to stop the air blowing.

[0004] However, the current offline dust removal equipment only uses pulse spraying to clean the bags. One box corresponds to one pulse valve, and pulse gas is sprayed to multiple bags in a box through a pulse valve. The cleaning effect on dust with strong adhesion is relatively limited. As the height decreases, the distance between the bag and the pulse valve increases, and the force of the spraying also decreases. The gas to be cleaned enters the box from bottom to top and passes through the bag. There is more dust in the area below the bag. The current cleaning method needs to be improved for cleaning dust in the lower part of the bag. Summary of the Invention

[0005] The present invention proposes a completely off-line dust removal device for solving the problem that the prior art only uses pulse spraying to clean dust, resulting in a relatively limited cleaning effect.

[0006] The technical solutions of the present invention are as follows: A completely offline dust removal device comprises a box, an ash hopper, a cage frame and a bag. The box is provided with multiple ash hoppers, the ash hoppers are connected to the bottom of the box, the cage frame is installed inside the box, the bag is arranged outside the cage frame, the ash hopper is connected to the air intake pipe, and further comprises: The blowing mechanism is used to spray and clean the bag, and the blowing mechanism includes: A gas storage tank, the gas storage tank is installed on the box body, and the gas storage tank is connected to a delivery pipe; A nozzle, wherein a plurality of nozzles are provided, and the nozzles correspond to the cloth bags one by one, and the plurality of nozzles located in the same box are connected to the delivery pipe through a pulse valve; An exhaust assembly, the exhaust assembly is used to discharge clean air, and the exhaust assembly includes: An exhaust chamber, the exhaust chamber is connected to the top of the upper box through an exhaust port, and the exhaust chamber is connected to an exhaust pipe; An opening and closing member, which is used to open and close the exhaust assembly and the box body, and includes: a baffle, the baffle being movably disposed on the exhaust bin and being used to open and close the exhaust port; A mechanical cleaning mechanism, which is used to clean the outside of the bag, and includes: A cleaning shaft, the cleaning shaft being rotatably disposed inside the box body and rotating around the cage frame; A cleaning rod is fixedly connected to the outside of the cleaning shaft, and the cleaning rod is in contact with the outside of the cloth bag.

[0007] In order to realize the rotation of the cleaning shaft, the cleaning shaft is connected to the baffle through a transmission assembly, and the transmission assembly includes: a driving rack fixedly connected to the bottom end of the baffle; A transmission rod, the transmission rod being rotatably connected to the interior of the exhaust chamber, the transmission rod being coaxially fixedly connected to a transmission gear, the transmission gear being meshed with the drive rack; A driving rod, wherein a plurality of driving rods are provided, wherein the driving rods are rotatably connected to the interior of the exhaust chamber, and two adjacent driving rods are connected to each other via a sprocket chain transmission, wherein one of the driving rods is connected to the transmission rod via a sprocket chain transmission; A driving bevel gear, wherein the driving bevel gear is fixedly sleeved on the driving rod; A driving gear, the driving gear being rotatably connected to the interior of the housing, the driving gear being coaxially fixedly connected to a driven bevel gear, the driven bevel gear being meshed with the driving bevel gear; The driven gear ring is rotatably connected to the inside of the box body, the driven gear ring and the cage frame are coaxially arranged, the driven gear ring is meshed with the driving gear, and the cleaning shaft is rotatably connected to the bottom of the driven gear ring.

[0008] In order to block the air intake during dust cleaning, the bottom end of the baffle is fixedly connected to an opening and closing plate via a connecting frame, and the opening and closing plate rises and falls with the baffle to open and close the air intake pipe.

[0009] In order to purge the lower position of the bag, a telescopic air supply tube is installed on the top of the cage frame, and a lifting frame is provided inside the cage frame in a liftable manner, and the lifting frame is connected to the bottom of the telescopic air supply tube.

[0010] The working principle and beneficial effects of the present invention are: 1. In the present invention, by setting up multiple boxes, when it is necessary to clean the cloth bags in the corresponding boxes, the baffle on the corresponding box is lowered to block the exhaust port, blocking the suction of the air outlet pipe on the gas in the box. At the same time, the baffle drives the opening and closing plate to descend to close the air inlet pipe, blocking the air intake of the air inlet pipe, opening the corresponding pulse valve, and spraying the pulse gas into the interior of the cloth bag through the nozzle to clean the cloth bag offline.

[0011] 2. In the present invention, when the baffle is raised or lowered, it can drive the driving rack to rise or fall, drive the transmission gear and the transmission rod to rotate, drive multiple driving rods to rotate under the action of the sprocket chain, drive the driving gear to rotate under the transmission action of the driving bevel gear and the driven bevel gear, thereby driving the driven gear to rotate around the cage frame, drive the cleaning shaft to rotate around the cloth bag, and make the cleaning rod clean the outside of the cloth bag.

[0012] 3. In the present invention, when the cloth bag is sprayed to clean the dust, the bottom end of the telescopic air supply cylinder is driven downward by the lifting frame, so that the pulse airflow sprayed by the nozzle can be blown to the lower position of the cloth bag through the telescopic air supply cylinder, thereby cleaning the lower position of the cloth bag where more dust accumulates, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 A schematic structural diagram of the first perspective of the present invention as a whole; Figure 2 A schematic structural diagram of the second perspective of the present invention as a whole; Figure 3 It is a schematic structural diagram of a partial cross-section of the present invention; Figure 4 It is a structural diagram of the box body, ash hopper, cloth bag and blowing mechanism of the present invention; Figure 5 This is a schematic structural diagram of the cage frame, cloth bag and flower plate of the present invention; Figure 6 This is a schematic structural diagram of the cage frame, telescopic air supply tube and lifting frame of the present invention; Figure 7 This is a schematic structural diagram of the drive rack and the opening and closing member of the present invention; Figure 8 It is a structural diagram of the flower plate and the mechanical cleaning mechanism of the present invention; Figure 9 It is a structural schematic diagram of the mechanical cleaning mechanism and transmission assembly of the present invention; Figure 10 It is a structural schematic diagram of the blowing mechanism of the present invention; Figure 11 For the present invention Figure 3 Schematic diagram of the local enlarged structure at A in the middle; Figure 12 For the present invention Figure 4 Schematic diagram of the local enlarged structure at B in the middle; Figure 13 For the present invention Figure 5 Schematic diagram of the local enlarged structure at C in the middle; Figure 14 For the present invention Figure 9 Schematic diagram of the local enlarged structure at point D in the middle.

[0015] In the picture: 1. Box body; 2. Ash hopper; 3. Cage frame; 4. Cloth bag; 5. Flower board; 6. Air inlet pipe; 7. Telescopic air supply tube; 8. Lifting frame; 9. Electric cylinder; 10. Lifting plate; 11. Opening and closing plate; 101. Gas storage tank; 102. Nozzle; 103. Delivery pipe; 104. Blowing pipe; 105. Connecting pipe; 201, exhaust chamber; 202, exhaust pipe; 301, baffle; 302, cylinder; 401, cleaning shaft; 402, cleaning rod; 501, driving rack; 502, transmission rod; 503, driving rod; 504, driving bevel gear; 505, driving gear; 506, driven ring gear; 507, transmission gear; 508, driven bevel gear. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0017] like Figures 1 to 14As shown, this embodiment proposes a completely offline dust cleaning type dust removal equipment, including a box body 1, an ash hopper 2, a cage frame 3 and a cloth bag 4, the box body 1 is provided with multiple, the ash hopper 2 is connected to the bottom of the box body 1, the cage frame 3 is installed inside the box body 1 through a flower plate 5, the cloth bag 4 is arranged on the outside of the cage frame 3, the flower plate 5 divides the box body 1 into a lower filter cavity and an upper clean air cavity, the cloth bag 4 is located inside the filter cavity, the ash hopper 2 is connected to an air inlet pipe 6, the air inlet pipe 6 passes the exhaust gas into the interior of the box body 1, the cloth bag 4 blocks the dust and impurities in the exhaust gas, and the clean air enters the clean air cavity from bottom to top and is discharged, and also includes a blowing mechanism, an exhaust component, an opening and closing part and a mechanical cleaning mechanism.

[0018] like Figures 1 to 12 As shown, the blowing mechanism is used to blow and clean the bag 4, and the blowing mechanism includes a gas tank 101 and a nozzle 102. The gas tank 101 is installed on the box body 1, and the gas tank 101 is connected to the delivery pipe 103. The nozzle 102 is provided in plurality, and the nozzle 102 corresponds to the bag 4 one by one. The plurality of nozzles 102 located in the same box body 1 are connected to the delivery pipe 103 through a pulse valve, and the plurality of nozzles 102 in the same box body 1 are connected through a blowing pipe 104, and the blowing pipe 104 is connected to the delivery pipe 103 through a connecting pipe 105. A pulse valve is installed on the connecting pipe 105. When it is necessary to clean the bag 4 in the corresponding box body 1, the corresponding pulse valve is opened to send the gas in the gas tank 101 into the interior of the blowing pipe 104 in the corresponding box body 1 and blown into the interior of the bag 4 through the nozzle 102 to blow and clean the bag 4.

[0019] like Figures 1 to 2 As shown, the exhaust component is used to discharge the clean air, and the exhaust component includes an exhaust bin 201, which is connected to the top of the upper box body 1 through an exhaust port, and the exhaust bin 201 is connected to an air outlet pipe 202, which can be connected to an exhaust fan. The exhaust fan generates suction on the air in the box body 1, and the gas filtered and purified by the bag 4 enters the exhaust bin 201 through the exhaust port, and is then discharged through the air outlet pipe 202 and the exhaust fan.

[0020] like Figures 1 to 7As shown, the opening and closing member is used to open and close the exhaust assembly and the box body 1, and the opening and closing member includes a baffle 301, which can be lifted and arranged on the exhaust bin 201 to open and close the exhaust port. A cylinder 302 is installed on the exhaust bin 201, and the baffle 301 is fixedly connected to the output end of the cylinder 302. The baffle 301 can be driven to rise and fall by the cylinder 302. The position of the opening and closing plate 11 corresponds to that of the exhaust port. When it is necessary to clean the cloth bag 4 in the corresponding box body 1, the corresponding cylinder 302 is opened to drive the baffle 301 to descend to close the exhaust port, thereby preventing the exhaust fan from closing the box body 1. The suction force generated prevents the cleaned dust from being adsorbed on the outside of the bag 4 again. At the same time, in order to block the air intake during cleaning, the bottom end of the baffle 301 is fixedly connected to the opening and closing plate 11 through a connecting frame. The opening and closing plate 11 rises and falls with the baffle 301 to open and close the air intake pipe 6. When the baffle 301 descends to close the exhaust port, the opening and closing plate 11 descends with the baffle 301 to close the air intake pipe 6, reducing the continued entry of exhaust gas, thereby keeping the gas in the box 1 in a relatively stable state, making it convenient for the pulse gas to carry out directionally sweeping of the bag 4, and then allowing the cleaned dust to fall and be discharged through the ash hopper 2.

[0021] like Figures 1 to 14As shown, the mechanical cleaning mechanism is used to clean the outside of the cloth bag 4, and the mechanical cleaning mechanism includes a cleaning shaft 401 and a cleaning rod 402. The cleaning shaft 401 is rotatably arranged inside the box body 1, and the cleaning shaft 401 rotates around the cage frame 3. The cleaning rod 402 is fixedly connected to the outside of the cleaning shaft 401, and the cleaning rod 402 is in contact with the outside of the cloth bag 4. The cleaning shaft 401 is connected to the baffle 301 through a transmission assembly. The transmission assembly includes a drive rack 501, a transmission rod 502, a drive rod 503, a drive bevel gear 504, a drive gear 505 and a driven gear ring 506. The drive rack 501 is fixedly connected to the At the bottom end of the baffle 301, the transmission rod 502 is rotatably connected to the inside of the exhaust bin 201, and the transmission rod 502 is coaxially fixedly connected to the transmission gear 507, and the transmission gear 507 is engaged with the driving rack 501. The driving rod 503 is provided with multiple, and the driving rod 503 is rotatably connected to the inside of the exhaust bin 201. Two adjacent driving rods 503 are connected by a sprocket chain transmission, and one of the driving rods 503 is connected to the transmission rod 502 by a sprocket chain. The driving bevel gear 504 is fixedly sleeved on the driving rod 503, and the driving gear 505 is rotatably connected to the inside of the box body 1. The driving gear 505 is coaxially fixedly connected It is connected to a driven bevel gear 508, which is meshed with the driving bevel gear 504, and the driven gear ring 506 is rotatably connected to the inside of the box body 1. The driven gear ring 506 and the cage frame 3 are coaxially arranged, and the driven gear ring 506 is meshed with the driving gear 505. The cleaning shaft 401 is rotatably connected to the bottom of the driven gear ring 506. When the baffle 301 is raised and lowered to open and close the exhaust port, the driving rack 501 can be driven to rise and fall accordingly. The driving rack 501 drives the transmission gear 507 and the transmission rod 502 to rotate, and under the action of the sprocket chain, the driving rod 503 connected thereto is driven to rotate, and at the same time, multiple driving rods 503 are driven by the transmission action of the sprocket chain. Synchronously rotating, the driving rod 503 drives the driving bevel gear 504 to rotate, and under the transmission action of the driving bevel gear 504 and the driven bevel gear 508, drives the driving gear 505 to rotate, thereby driving the driven gear ring 506 to rotate around the cage frame 3, driving the cleaning shaft 401 to rotate around the cloth bag 4, so that the cleaning rod 402 cleans the outside of the cloth bag 4. When the cleaning shaft 401 drives the cleaning rod 402 to revolve around the cloth bag 4, the cloth bag 4 generates reverse resistance to the cleaning rod 402 after contacting the cloth bag 4, thereby fluctuating the cleaning rod 402 to rotate on its own. The cleaning shaft 401 and the cleaning rod 402 rotate on their own while revolving around the cloth bag 4, reducing the accumulation of dust between the cleaning rod 402 and the cloth bag 4, and ensuring the cleaning effect of the cloth bag 4.

[0022] like Figures 1 to 13As shown, in order to purge the lower position of the cloth bag 4, a telescopic air supply tube 7 is installed on the top of the cage frame 3, and a lifting frame 8 is provided inside the cage frame 3 which can be lifted and lowered. The lifting frame 8 is connected to the bottom of the telescopic air supply tube 7, and an electric cylinder 9 is installed on the exhaust bin. The output end of the electric cylinder 9 is fixedly connected to a lifting plate 10, and the lifting frame 8 is fixedly connected to the lifting plate 10 through a connecting rod. The lifting plate 10, the connecting rod and the lifting frame 8 can be driven to rise and fall by the electric cylinder 9. The top of the telescopic air supply tube 7 is located at the top of the cage frame 3 near the outlet of the nozzle 102. At the air inlet position, during the normal dust removal process, the lifting frame 8 is in the highest position, so that the telescopic air supply tube 7 is in a retracted state, avoiding obstruction to the dust removal of the cloth bag 4. When the cloth bag 4 needs to be sprayed and cleaned, the electric cylinder 9 drives the lifting frame 8 to descend, thereby driving the bottom end of the telescopic air supply tube 7 to descend and extend it. The air outlet position of the telescopic air supply tube 7 is close to the bottom of the cloth bag 4. After the pulse valve is opened, the gas ejected from the nozzle 102 is blown to the lower position of the cloth bag 4, and the area below the cloth bag 4 where dust is accumulated more is sprayed, thereby improving the cleaning effect of the cloth bag 4.

[0023] The working principle or use process of this completely offline dust removal equipment is as follows: The waste gas to be treated enters the box body 1 through the air inlet pipe 6 and passes through the bag 4 under the action of the exhaust fan into the exhaust bin 201 and is discharged through the outlet pipe 202. The bag 4 blocks the impurities and dust in the waste gas so that they remain inside the box body 1. The clean gas is discharged through the exhaust bin 201 and the outlet pipe 202. Some dust is adsorbed on the surface of the bag 4. When the bag 4 needs to be cleaned, the cylinder 302 on the corresponding box 1 drives the baffle 301 to descend to close the exhaust port. At the same time, the baffle 301 drives the opening and closing plate 11 to descend to close the air inlet pipe 6, so that the gas environment in the box 1 to be cleaned is relatively stable. During the descending process of the baffle 301, the driving gear 505 is driven to rotate, thereby driving the driven gear ring 506 and the cleaning shaft 401 to rotate around the cloth bag 4, driving the cleaning rod 402 to clean the outside of the cloth bag 4; The electric cylinder 9 drives the lifting plate 10 and the lifting frame 8 to descend, extending the telescopic air supply cylinder, opening the pulse valve in the corresponding box 1, so that the gas in the gas tank 101 is sprayed into the interior of the bag 4 through the nozzle 102. Under the action of the telescopic air supply cylinder, the gas can be delivered to the lower position of the bag 4 to purge the bag 4; Then the electric cylinder 9 drives the lifting frame 8 to rise to retract the telescopic air supply cylinder, and the cylinder 302 drives the baffle 301 and the opening and closing plate 11 to rise to open the exhaust port and the air inlet pipe 6. The box body 1 and the cloth bag 4 continue to perform dust removal work. During the rising process of the baffle 301, it will still drive the driven gear ring 506 to rotate, thereby driving the cleaning shaft 401 and the cleaning rod 402 to clean the cloth bag 4 again, thereby improving the cleaning effect of the cloth bag 4.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A completely offline dust removal device, comprising a box (1), an ash hopper (2), a cage frame (3) and a bag (4), wherein the box (1) is provided with a plurality of ash hoppers (2) and the bottom of the box (1) is connected, the cage frame (3) is installed inside the box (1), the bag (4) is arranged outside the cage frame (3), and the ash hopper (2) is connected to an air inlet pipe (6), characterized in that: Also includes: A blowing mechanism, the blowing mechanism is used to spray and clean the cloth bag (4); an exhaust assembly, the exhaust assembly being used to discharge clean air; An opening and closing member, the opening and closing member being used to open and close the exhaust assembly and the box body (1); A mechanical cleaning mechanism, the mechanical cleaning mechanism is used to clean the outside of the cloth bag (4), and the mechanical cleaning mechanism comprises: A cleaning shaft (401), the cleaning shaft (401) being rotatably arranged inside the box body (1), and the cleaning shaft (401) rotating around the cage frame (3); A cleaning rod (402) is fixedly connected to the outside of the cleaning shaft (401), and the cleaning rod (402) is in contact with the outside of the cloth bag (4).

2. A completely offline dust removal equipment according to claim 1, characterized in that: The blowing mechanism comprises: An air storage tank (101), the air storage tank (101) being mounted on the box body (1), and the air storage tank (101) being connected to a delivery pipe (103); A nozzle (102), wherein a plurality of nozzles (102) are provided, and the nozzles (102) correspond to the cloth bags (4) one by one, and the plurality of nozzles (102) located in the same box (1) are connected to the delivery pipe (103) via a pulse valve.

3. The completely offline dust removal equipment according to claim 2, characterized in that: The exhaust assembly comprises: An exhaust bin (201), the exhaust bin (201) is connected to the top of the upper box body (1) through an exhaust port, and the exhaust bin (201) is connected to an exhaust pipe (202).

4. The completely offline dust removal equipment according to claim 3, characterized in that: The opening and closing member comprises: A baffle (301) is arranged on the exhaust chamber (201) in a liftable manner and is used to open and close the exhaust port.

5. The completely offline dust removal equipment according to claim 4, characterized in that: The cleaning shaft (401) is in transmission connection with the baffle (301) via a transmission assembly.

6. The completely offline dust removal equipment according to claim 5, characterized in that: The transmission assembly comprises: A driving rack (501), the driving rack (501) being fixedly connected to the bottom end of the baffle (301); a transmission rod (502), the transmission rod (502) being rotatably connected to the interior of the exhaust chamber (201), the transmission rod (502) being coaxially fixedly connected to a transmission gear (507), the transmission gear (507) being meshed with the drive rack (501); A driving rod (503), wherein a plurality of driving rods (503) are provided, wherein the driving rods (503) are rotatably connected to the interior of the exhaust chamber (201), and two adjacent driving rods (503) are connected to each other via a sprocket chain transmission, wherein one of the driving rods (503) is connected to the transmission rod (502) via a sprocket chain transmission; A driving bevel gear (504), wherein the driving bevel gear (504) is fixedly sleeved on the driving rod (503); A driving gear (505), the driving gear (505) is rotatably connected to the interior of the housing (1), the driving gear (505) is coaxially fixedly connected to a driven bevel gear (508), and the driven bevel gear (508) is meshed with the driving bevel gear (504); A driven gear ring (506) is rotatably connected to the interior of the housing (1), the driven gear ring (506) and the cage frame (3) are coaxially arranged, the driven gear ring (506) and the driving gear (505) are meshed, and the cleaning shaft (401) is rotatably connected to the bottom of the driven gear ring (506).

7. The completely offline dust removal equipment according to claim 6, characterized in that: The bottom end of the baffle (301) is fixedly connected to an opening and closing plate (11) via a connecting frame, and the opening and closing plate (11) rises and falls along with the baffle (301) to open and close the air intake pipe (6).

8. The completely offline dust removal equipment according to claim 7, characterized in that: A telescopic air supply tube (7) is installed on the top of the cage frame (3), and a lifting frame (8) is provided inside the cage frame (3) in a liftable manner. The lifting frame (8) is connected to the bottom of the telescopic air supply tube (7).

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