CN213492765U - Integrated anti-explosion wet dust collector - Google Patents
Integrated anti-explosion wet dust collector Download PDFInfo
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- CN213492765U CN213492765U CN202021859863.1U CN202021859863U CN213492765U CN 213492765 U CN213492765 U CN 213492765U CN 202021859863 U CN202021859863 U CN 202021859863U CN 213492765 U CN213492765 U CN 213492765U
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Abstract
The utility model provides an explosion-proof wet dedusting device of integral type for contain the dust removal of explosive aluminum alloy dust, includes the tower body, and the cavity in the tower body is the dust removal chamber, and the dust removal chamber intercommunication has intake pipe and blast pipe, installs the hydrogen relief valve on the blast pipe, and the intake pipe passes through pipeline and explosion-proof fan and the suction hood intercommunication of job site. A demister, a spray header, a rotational flow plate, a liquid collecting hopper, a sedimentation tank and a clean water tank are sequentially arranged in the tower body from top to bottom. The spray head is used for spraying liquid drops; the cyclone plate is used for changing the flow direction of water flow and flue gas and enhancing the capture of liquid drops on dust in the flue gas; the demister is used for removing water mist in the exhaust gas. The liquid collecting hopper, the sedimentation tank and the clean water tank form a self-purification cycle of the spray liquid. The utility model discloses can effectively detach the aluminum alloy dust in the flue gas, can also prevent that hydrogen from gathering and the explosion that arouses. Furthermore, the utility model discloses realize the self-purification circulation of shower water, solved the jam problem of shower head, improved work efficiency, reduceed the maintenance cost.
Description
Technical Field
The utility model belongs to the technical field of environmental protection purification treatment facility and specifically relates to an explosion-proof wet dust collector of integral type is related to.
Background
The aluminum alloy dust generated by the aluminum-magnesium product in the machining process has stronger explosion characteristic, the dry dust collector has high cost and high probability of dust explosion, and the wet dust collector which takes water as an absorption circulating medium is adopted, so that the intrinsic safety can be realized, and not only the dust collection efficiency meets the environmental protection requirement, but also the explosion risk is greatly reduced. The detailed requirements on the wet dust collector, in particular the explosion-proof function are carried out according to the technical specifications for mechanical processing dust explosion prevention of aluminum magnesium products (AQ 4272-2016) and the technical specifications for dust collection system safety for dust explosion dangerous places (AQ 4273-2016) issued by the State safety production supervision and administration.
Patent No. CN210814470U discloses a wet dust collector for explosive dust, which can treat explosive dust such as aluminum powder and alloy dust. However, the spray water in this patent does not have a self-cleaning function, and the spray head is blocked, which affects the dust removal efficiency. Based on the above problems, further improvement of the technical solution is needed to meet the requirement of handling explosive dust.
SUMMERY OF THE UTILITY MODEL
In order to overcome not enough in the background art, the utility model discloses an explosion-proof wet dust collector of integral type adopts following technical scheme:
the utility model provides an explosion-proof wet dedusting device of integral type for contain the dust removal of explosive dust flue gas, characterized by: the method comprises the following steps:
the tower body, the cavity pocket in the tower body is a dust removal cavity; the dust removal cavity is communicated with an air inlet pipe and an air outlet pipe, wherein the air outlet pipe is arranged at the top of the tower, and a hydrogen release valve is arranged on the air outlet pipe; the air inlet pipe is arranged at the tower body part; the air inlet pipe is communicated with a dust hood on an operation site through a pipeline and an explosion-proof fan; the top of the tower is provided with a venting membrane;
a spray header for spraying droplets;
the rotational flow plate is arranged between the spray header and the air inlet pipe and used for changing the flow direction of water flow and flue gas and enhancing the capture of liquid drops on dust in the flue gas;
the demister is arranged between the spray header and the exhaust pipe and is used for removing water mist in the exhaust gas;
the liquid collecting hopper is arranged below the air inlet pipe and used for collecting liquid dropping from the rotational flow plate;
the sedimentation tank is arranged below the liquid collecting box, adopts an open structure, and is used for receiving the liquid of the liquid collecting hopper and sedimentating sediments in the liquid; the bottom of the sedimentation tank is connected with a sewage pump for discharging sediments; a drain pipe is arranged at the upper part of the sedimentation tank;
the clear water tank is arranged below the sedimentation tank, adopts an open structure and is used for storing spraying liquid; the bottom of the clean water tank is connected with a circulating pump, and the circulating pump is connected with a spray head through a pipeline; the clean water tank is communicated with a drain pipe of the sedimentation tank and is used for receiving liquid precipitated in the sedimentation tank.
The technical scheme is further improved, the tower body is a cylindrical tower body, and an access hole is formed in the tower body; the air inlet pipe is arranged along the tangential direction of the cylindrical tower body.
Further improve technical scheme, the whirl board is the two-stage, and two-stage whirl board sets up from top to bottom, and the direction of rotation of two-stage whirl board blade is the same.
According to the technical scheme, the demister is a wire mesh demister.
According to the technical scheme, the dust removal device further comprises a wind speed measuring instrument and a pressure difference alarm; wherein, the wind speed measuring instrument is arranged at the air inlet pipe; the pressure difference alarm is respectively connected with the air inlet pipe and the exhaust pipe.
Further improves the technical proposal, and a water temperature thermometer, a liquid level meter and a floating ball water replenishing pipe are arranged in the clean water tank.
The technical scheme is further improved, a spare drain pipe is connected to the clean water tank and arranged below the drain pipe; the water inlet end of the standby drain pipe is connected with a plug, and the water outlet end of the standby drain pipe is communicated with the clean water tank.
Further improve technical scheme, the circulating pump passes through washing pipeline and valve and blast pipe intercommunication.
Further improve technical scheme, the blast pipe passes through the valve and communicates with the clean water basin.
The technical scheme is further improved, and a liquid outlet pipeline of the circulating pump is connected with a flowmeter and a water pressure meter.
Owing to adopt above-mentioned technical scheme, compare the background art, the utility model discloses following beneficial effect has:
the utility model discloses can effectively detach the aluminum alloy dust in the flue gas, purify the flue gas, can also prevent that hydrogen from gathering and the explosion that arouses, guarantee the safe operation of equipment. Furthermore, the utility model discloses can realize that the shower water from spray, to catch the dust, to collect, to deposit the filtration, to the self-purification circulation that sprays again, solve the jam problem of shower head, improve work efficiency, reduceed the maintenance cost.
The utility model discloses an integrated design has that area is little, the system is reliable and stable, no advantages such as secondary pollution, not only satisfies national security and environmental protection standard, and simple structure, high-efficient safety, is applicable to the collection processing of handling easy-explosion hydrophilicity dust such as almag.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an air inlet pipe; 2. a tower body; 3. a first stage swirl plate; 4. a return pipe; 5. a first-level access hole; 6. a secondary swirl plate; 7. a secondary access hole; 8. a wire mesh demister; 9. venting the rupture disk; 10. an exhaust pipe; 11. a hydrogen release valve; 12. a differential pressure alarm; 13. a liquid collecting hopper; 14. a sedimentation tank; 15. a clean water tank; 16. a water temperature thermometer; 17. emptying the air; 18. a liquid level meter; 19. a sewage pump; 20. a flow meter; 21. a water pressure gauge; 22. a circulation pump; 23. a drain pipe; 24. a standby drain pipe; 25. a floating ball water replenishing pipe; 26. a shower head; 27. a wind speed measuring instrument; 28. and (5) flushing the pipeline.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The utility model provides an explosion-proof wet dedusting device of integral type, as shown in figure 1, includes tower body 2, from the top down in tower body 2, has set gradually defroster, shower head 26, whirl board, collecting hopper 13, sedimentation tank 14 and clean water basin 15. This will be explained in detail below.
The tower body 2 is a cylindrical tower body 2, and a cylindrical cavity and a cone frustum-shaped cavity at the upper part in the tower body 2 are dust removing cavities. The dust removal chamber communicates with intake pipe 1 and blast pipe 10, and wherein, blast pipe 10 is established on the tower top, and intake pipe 1 is established in tower body portion, and intake pipe 1 sets up along cylindrical tower body 2's tangential direction. The air inlet pipe 1 is communicated with a dust hood on an operation site through a pipeline and an explosion-proof fan, and flue gas flows upwards along the inner wall of the dust removing cavity in a convolute mode after entering the dust removing cavity from the air inlet pipe 1. In order to prevent the hydrogen in the flue gas from being accumulated in the tower top to cause explosion, a hydrogen release valve 11 is installed on the exhaust pipe 10, and the hydrogen release valve 11 can be automatically opened to discharge the hydrogen after the explosion-proof fan is stopped, so that the accumulation of the hydrogen in the tower top is prevented. Still install at the top of the tower and let out rupture membrane 9, let out rupture membrane 9 and can dismantle with tower body 2 through the bolted connection is vice to be connected, in case take place the hydrogen explosion, let out rupture membrane 9 and break and reduce tower internal pressure, can ensure the safety of tower body 2.
The utility model discloses a wet dedusting, aluminum alloy dust through spraying liquid in to the flue gas catches the dust removal. The spray liquid used in this embodiment is water, and the water forms liquid droplets and water mist after spraying. In order to prevent the water mist from being brought out of the dust removal cavity by the exhaust gas, the water mist is required to be liquefied and recovered by the demister so as to reduce the consumption of water. The demister used in this embodiment is a wire mist demister 8, and the wire mist demister 8 can effectively remove water mist in exhaust gas.
A spray header 26 is arranged below the demister, the spray header 26 is arranged at the axis position of the tower body 2, and sprays liquid drops and water mist downwards in a conical surface shape. A swirl plate is arranged below the shower head 26, and liquid drops sprayed from the shower head 26 fall on blades of the swirl plate to form a thin liquid layer on the blades of the swirl plate.
The rotational flow plate is arranged between the spray header 26 and the air inlet pipe 1 and used for changing the flow direction of water flow and flue gas and enhancing the capture of liquid drops to dust in the flue gas. In this embodiment, the whirl board is the two-stage, and two-stage whirl board sets up from top to bottom, and one-level whirl board 3 sets up in the top of second grade whirl board 6, and the one-level whirl board 3 is the same with the turning of the blade of second grade whirl board 6. The flue gas that has certain wind pressure and wind speed produces rotatory and centrifugal motion when passing through the whirl board blade, and the thin liquid layer on the whirl board blade takes place gas-liquid double-phase collision with rotatory ascending flue gas stream, and the aluminum alloy dust in the flue gas is caught by the thin liquid layer, forms tiny liquid drop and gets rid of to the tower wall. The liquid drops are collected into the liquid collecting tank of the rotational flow plate under the action of gravity and flow onto the next-stage rotational flow plate 3 through the return pipe 4. And a small part of escaping flue gas dust collides with water mist to generate gas-liquid two-phase collision, and is captured by the water mist to be settled. For the convenience of maintenance, a first-stage maintenance opening 5 is formed in the lower portion of the return pipe 4, and a second-stage maintenance opening 7 is formed in the lower portion of the second-stage rotational flow plate 6.
The liquid collecting hopper 13 is arranged below the air inlet pipe 1 and used for collecting liquid dropping from the two-stage cyclone plates. The liquid collecting hopper 13 is an open funnel structure with an inclined surface at the bottom, and once hydrogen explosion occurs, the liquid collecting hopper 13 can release pressure downwards.
A settling tank 14 is provided below the header tank for receiving the liquid from the hopper 13 and settling sediment in the liquid. A sewage pump 19 for discharging sediment is connected to the bottom of the sedimentation tank 14, and the sewage pump 19 is periodically opened to discharge the sediment in the sedimentation tank 14 out of the sedimentation tank 14. The deposits are mainly aluminum alloy dust and other particles, and the aluminum alloy dust is dried, sorted and then recycled, so that new environmental pollution can not be generated. The upper part of the sedimentation tank 14 is provided with a drain pipe 23, and the drain pipe 23 is communicated with the clean water tank 15 below through a valve and is used for replenishing water to the clean water tank 15. The drain pipe 23 also serves to prevent the excessive water in the sedimentation tank 14 from overflowing. A spare drain pipe 24 is connected to the clean water tank 15, and the spare drain pipe 24 is provided below the drain pipe 23. The water inlet end of the standby drain pipe 24 is connected with a plug, and the water outlet end is communicated with the clean water tank 15. The standby drain pipe 24 is not used at ordinary times, and the water inlet end of the standby drain pipe 24 is blocked by a plug. When the drain pipe 23 is blocked or works abnormally, the plug at the water inlet end of the standby drain pipe 24 is pulled off, so that the sedimentation tank 14 is communicated with the clean water tank 15. In order to clean the sedimentation tank 14, the circulation pump 22 is connected to the exhaust pipe 10 through a flushing pipe 28 and a valve, and after the valve is opened, the sedimentation tank 14 is cleaned by high-pressure water in the circulation pump 22.
A clean water tank 15 is provided below the settling tank 14 for storing water settled from the settling tank 14. The bottom of the clean water tank 15 is connected with a circulating pump 22 and a drain port 17, and the drain port 17 is arranged to facilitate cleaning of the clean water tank 15. The circulation pump 22 is connected to the shower head 26 through a pipe, and supplies high-pressure shower water to the shower head 26. Thus, a self-cleaning cycle of spray water from spraying, to dust capture, to collection, to precipitation filtration, to re-spraying is formed. In order to monitor the operation of the circulation pump 22, a flow meter 20 and a water pressure meter 21 are connected to the outlet pipe of the circulation pump 22. In order to stabilize the liquid level of the clean water tank 15 and ensure the normal operation of the circulating pump 22, a liquid level meter 18 and a floating ball water replenishing pipe 25 are arranged in the clean water tank 15. The liquid level meter 18 is used for measuring the liquid level of the clean water tank 15, and when the liquid level is low, the floating ball water replenishing pipe 25 is opened to replenish water into the clean water tank 15. Because the spray water in the device is in quantitative circulation and the loss of water is added, the problem of overflow caused by overhigh liquid level can be avoided.
The dust removing device also comprises an air speed measuring instrument 27, a differential pressure alarm 12 and a water temperature thermometer 16. Wherein, the wind speed measuring instrument 27 is arranged at the air inlet pipe 1 and is used for measuring the flow speed of the flue gas in the air inlet pipe 1. The pressure difference alarm 12 is connected to the air inlet pipe 1 and the air outlet pipe 10, and is configured to detect a pressure difference between air pressure at the air inlet pipe 1 and air pressure at the air outlet pipe 10. A water temperature thermometer 16 is provided in the clean water tank 15 for measuring the temperature of water in the tank. The working conditions of all the components in the tower can be indirectly known through the wind speed measuring instrument 27, the differential pressure alarm 12 and the water temperature thermometer 16.
Therefore, the device can effectively remove the aluminum alloy dust in the flue gas, purify the flue gas and prevent explosion caused by hydrogen accumulation. The spray water in the device can realize self-purification circulation from spraying, dust capturing, dust collecting, precipitation filtering and spraying again.
The part of the utility model not detailed is prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an explosion-proof wet dedusting device of integral type for contain the dust removal of explosive aluminum alloy dust, characterized by: the method comprises the following steps:
the tower body, the cavity pocket in the tower body is a dust removal cavity; the dust removal cavity is communicated with an air inlet pipe and an air outlet pipe, wherein the air outlet pipe is arranged at the top of the tower, and a hydrogen release valve is arranged on the air outlet pipe; the air inlet pipe is arranged at the tower body part; the air inlet pipe is communicated with a dust hood on an operation site through a pipeline and an explosion-proof fan; the top of the tower is provided with a venting membrane;
a spray header for spraying droplets;
the rotational flow plate is arranged between the spray header and the air inlet pipe and used for changing the flow direction of water flow and flue gas and enhancing the capture of liquid drops on dust in the flue gas;
the demister is arranged between the spray header and the exhaust pipe and is used for removing water mist in the exhaust gas;
the liquid collecting hopper is arranged below the air inlet pipe and used for collecting liquid dropping from the rotational flow plate;
the sedimentation tank is arranged below the liquid collecting tank and used for receiving the liquid of the liquid collecting hopper and sedimentating sediments in the liquid; the bottom of the sedimentation tank is connected with a sewage pump for discharging sediments; a drain pipe is arranged at the upper part of the sedimentation tank;
the clear water tank is arranged below the sedimentation tank and used for storing spraying liquid; the bottom of the clean water tank is connected with a circulating pump, and the circulating pump is connected with a spray head through a pipeline; the clean water tank is communicated with a drain pipe of the sedimentation tank and is used for receiving liquid precipitated in the sedimentation tank.
2. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: the tower body is a cylindrical tower body, and an access hole is formed in the tower body; the air inlet pipe is arranged along the tangential direction of the cylindrical tower body.
3. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: the vortex plate is two-stage, and two-stage vortex plate sets up from top to bottom, and the direction of rotation of two-stage vortex plate blade is the same.
4. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: the demister is a wire mesh demister.
5. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: the dust removal device also comprises a wind speed measuring instrument and a pressure difference alarm; wherein, the wind speed measuring instrument is arranged at the air inlet pipe; the pressure difference alarm is respectively connected with the air inlet pipe and the exhaust pipe.
6. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: a water temperature thermometer, a liquid level meter and a floating ball water replenishing pipe are arranged in the clean water tank.
7. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: a spare drain pipe is connected to the clean water tank and arranged below the drain pipe; the water inlet end of the standby drain pipe is connected with a plug, and the water outlet end of the standby drain pipe is communicated with the clean water tank.
8. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: the circulating pump is communicated with the exhaust pipe through a flushing pipeline and a valve.
9. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: the exhaust pipe is communicated with the clean water tank through a valve.
10. An integrated explosion-proof wet dust collector as claimed in claim 1, wherein: the liquid outlet pipeline of the circulating pump is connected with a flowmeter and a water pressure meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021859863.1U CN213492765U (en) | 2020-08-31 | 2020-08-31 | Integrated anti-explosion wet dust collector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021859863.1U CN213492765U (en) | 2020-08-31 | 2020-08-31 | Integrated anti-explosion wet dust collector |
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| CN213492765U true CN213492765U (en) | 2021-06-22 |
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| CN202021859863.1U Active CN213492765U (en) | 2020-08-31 | 2020-08-31 | Integrated anti-explosion wet dust collector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694653A (en) * | 2021-09-01 | 2021-11-26 | 金方圆安全技术研究院（苏州）有限公司 | Wet dust removal explosion suppression monitoring system for metal product processing |
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2020
- 2020-08-31 CN CN202021859863.1U patent/CN213492765U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694653A (en) * | 2021-09-01 | 2021-11-26 | 金方圆安全技术研究院（苏州）有限公司 | Wet dust removal explosion suppression monitoring system for metal product processing |
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