CN212651551U - Metal exhaust gas purification equipment that polishes - Google Patents
Metal exhaust gas purification equipment that polishes Download PDFInfo
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- CN212651551U CN212651551U CN202020987074.XU CN202020987074U CN212651551U CN 212651551 U CN212651551 U CN 212651551U CN 202020987074 U CN202020987074 U CN 202020987074U CN 212651551 U CN212651551 U CN 212651551U
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Abstract
The utility model discloses a metal polishing waste gas purification device, which comprises a tower body and a control system; the bottom of the tower body is provided with a circulating water tank, the top of the tower body is provided with an air outlet, the air outlet is connected with the air inlet end of a centrifugal fan through an exhaust pipe, and the air outlet end of the centrifugal fan is connected with a chimney; the bottom of the side wall of the tower body is provided with an air inlet pipe, and the air outlet end of the air inlet pipe is provided with a plurality of air guide plates; a sieve plate and a spraying system are sequentially arranged above the air entraining plate, and an automatic slag discharging device is arranged in the circulating water tank; centrifugal fan and circulating pump all are connected with control system, this equipment structural design science, and the gas distribution is even, purification efficiency is high, possess automatic play sediment clearance function.
Description
Technical Field
The utility model relates to a metal exhaust-gas treatment field of polishing especially relates to a metal exhaust-gas purification equipment of polishing.
Background
In a metal polishing workshop, more dust and waste gas are generated and often contain small metal particles, most of the conventional treatment methods are to arrange a gas collecting hood and an exhaust fan on a polishing station, polishing waste gas is intensively pumped to subsequent equipment for treatment, and the waste gas generated by metal polishing is treated by two methods, one is dry and is treated by a bag-type dust collector and the like; the other is wet type, and is treated by equipment such as a spray tower, a purification tower and the like; dust generated by metal polishing is dangerous to some extent, and fire or explosion may occur due to improper handling, so that a wet treatment method is generally used.
Chinese patent CN204996291U discloses a metal polishing dust treatment device; the patent mainly removes larger particle dust through a dust filter screen, and then wets fine particles by utilizing a spray tower
The formula is got rid of, and is further filtration processing to moisture gas process filter at last, so to realize carrying out better purification dust removal to the metal workshop of polishing and handle, thereby, to a great extent has improved workshop operational environment, reduces the dust and harms to production line workman's health.
However, this patent also has certain drawbacks, such as: uneven gas distribution in the spray tower affects the efficiency of spray treatment; utilize and filter supporting network and safe filter screen to filter and spray the liquid, realize spraying the cyclic utilization of liquid, filter supporting network and safe filter screen self clearance comparatively difficult, in case block up, need the whole equipment to shut down and maintain.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's shortcoming, providing a structural design science, the gas distribution is even, purification efficiency is high, possess the automatic exhaust gas purification equipment that polishes of going out the sediment clearance function.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that:
a metal polishing waste gas purification device comprises a tower body and a control system; the bottom of the tower body is provided with a circulating water tank, the top of the tower body is provided with an air outlet, the air outlet is connected with the air inlet end of a centrifugal fan through an exhaust pipe, and the air outlet end of the centrifugal fan is connected with a chimney; the bottom of the side wall of the tower body is provided with an air inlet pipe, and the air outlet end of the air inlet pipe is provided with a plurality of air guide plates; a sieve plate and a spraying system are sequentially arranged above the air entraining plate, the spraying system comprises an annular water distribution pipe arranged above the sieve plate and a spraying head arranged on the water distribution pipe, the center of the water distribution pipe is connected with a water inlet pipe, the other end of the water inlet pipe is connected with a circulating pump in a circulating water tank, an automatic slag discharging device is arranged in the circulating water tank, the automatic slag discharging device comprises a slag discharging channel which is communicated with the side wall of the circulating water tank and is obliquely and upwards arranged, a driving wheel arranged at the top in the slag discharging channel, a driving motor driving the driving wheel to rotate and two driven wheels arranged at the bottom of the circulating water tank, and a rake tooth chain is wound between the driving; and the driving motor, the centrifugal fan and the circulating pump are all connected with the control system.
Preferably, a slag outlet is further arranged below the driving wheel.
Preferably, the number of the air guide plates is 3-8; the air guide plate is a straight plate, an arc-shaped plate or the upper part is a straight plate and the lower part is an arc-shaped plate; the horizontal spacing between the air guide plates is gradually increased along the airflow flowing direction; the bottom ends of the air guide plates are distributed in a step shape which gradually descends in the vertical direction along the flowing direction of the air flow.
Preferably, a cyclone and a baffling demisting plate are arranged above the water distribution pipe.
Preferably, the sieve plate is provided with at least four layers.
The utility model has the advantages that:
firstly, the method comprises the following steps: the driving motor drives the driving wheel to rotate, so that the rake tooth chain is driven to convey impurities and the like in the circulating water tank to the slag outlet to be discharged, the whole process is full-automatic, and manual slag removal is not needed;
secondly, the method comprises the following steps: a plurality of air guide plates are vertically arranged at the air outlet end of the air guide pipe, and the air guide plates are used for carrying out primary uniform distribution on the air flow, so that the air flow is prevented from being excessively concentrated; uniformly distributing airflow by using the sieve plates, starting a spraying system when purifying, spraying liquid sprayed by the spraying system downwards, and sequentially passing through the plurality of sieve plates from top to bottom, wherein the spraying liquid forms 60-120mm foam on the sieve plates; when the spray liquid in the tower body is stable on the sieve plate, the air inlet pipe starts to admit air, the rising waste gas and the spray liquid can be in full contact through multiple gas-liquid contact (the quantity of the waste gas and the spray liquid is consistent with that of the sieve plate), the waste gas and the spray liquid carry out mass transfer in the tower, and the gas-liquid contact time is prolonged; the concentration of the particles in the waste gas is sharply reduced, and the purification is completed, so that the whole purification tower is uniform in gas distribution and high in purification efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Figure 2 is a schematic view of a bleed panel arrangement.
Figure 3 is a second schematic view of the bleed plate configuration.
In the figure: 1 is a tower body, 2 is a control system, 3 is a circulating water tank, 4 is an air outlet, 5 is an exhaust pipe, 6 is a centrifugal fan, 7 is a chimney, 8 is an air inlet pipe, 9 is an air guide plate, 10 is a sieve plate, 11 is a water distribution pipe, 12 is a spray header, 13 is a water inlet pipe, 14 is a circulating pump, 15 is an automatic slag discharging device, 15.1 is a slag discharging channel, 15.2 is a driving wheel, 15.3 is a driven wheel, 15.4 is a rake tooth chain, 15.5 is a slag outlet, 16 is a cyclone and 17 is a baffling demisting plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
A metal polishing waste gas purification device comprises a tower body 1 and a control system 2; the bottom of the tower body 1 is provided with a circulating water tank 3, the top of the tower body 1 is provided with an air outlet 4, the air outlet 4 is connected with the air inlet end of a centrifugal fan 6 through an exhaust pipe 5, and the air outlet end of the centrifugal fan 6 is connected with a chimney 7; an air inlet pipe 8 is arranged at the bottom of the side wall of the tower body 1, and a plurality of air guide plates 9 are arranged at the air outlet end of the air inlet pipe 8; a sieve plate 10 and a spraying system are sequentially arranged above the gas guide plate 9, the spraying system comprises an annular water distribution pipe 11 arranged above the sieve plate 10 and a spraying head 12 arranged on the water distribution pipe 11, the center of the water distribution pipe 11 is connected with a water inlet pipe 13, and the other end of the water inlet pipe 13 is connected with a circulating pump 14 in the circulating water tank 3; an automatic slag discharging device 15 is arranged in the circulating water tank 3, the automatic slag discharging device 15 comprises a slag discharging channel 15.1 which is communicated with the side wall of the circulating water tank 3 and is obliquely and upwards arranged, a driving wheel 15.2 arranged at the inner top of the slag discharging channel 15.1, a driving motor (not shown in the figure) for driving the driving wheel 15.2 to rotate and two driven wheels 15.3 arranged at the bottom of the circulating water tank 3, and a rake tooth chain 15.4 is wound between the driving wheel 15.2 and the driven wheels 15.3; the driving motor, the centrifugal fan 6 and the circulating pump 14 are all connected with the control system 2 (not shown in the figure), the control system 2 is the prior art and can be a PLC controller, and details are not repeated here.
Preferably, a slag outlet 15.5 is also arranged below the driving wheel 15.2.
Preferably, the number of the air guide plates 9 is 3-8; the air guide plate 9 is a straight plate (refer to the attached figure 1), an arc-shaped plate (refer to the attached figure 2) or an arc-shaped plate (refer to the attached figure 3) with the upper part being the straight plate and the lower part being the arc-shaped plate; the horizontal spacing between the air guide plates 9 is gradually increased along the airflow flowing direction; the bottom ends of the air guide plates 9 are distributed in a step shape which gradually descends in the vertical direction along the flowing direction of the air flow.
Preferably, a cyclone 21 and a baffling demisting plate 22 are also arranged above the water distributor 11.
Preferably, the screen plate 10 is provided with at least four layers.
The working principle of the device is as follows:
when in purification, the spraying system is started firstly, spraying liquid sprayed out by the spraying system sprays downwards and sequentially passes through the multilayer sieve plate 9 from top to bottom, and the spraying liquid forms 60-120mm foam on the sieve plate 9; when the spray liquid in the tower body 1 is stable on the sieve plate 9, the air inlet pipe 8 starts to admit air, the metal polishing waste gas is primarily divided by the air entraining plate 9, and then the metal polishing waste gas is uniformly distributed by the sieve plate 10, so that stable and uniformly distributed air flow can be formed in the tower body 1; the ascending waste gas and the spraying liquid can be in full contact through gas and liquid for multiple times (the quantity of the waste gas and the spraying liquid is consistent with that of the sieve plates), and the waste gas and the spraying liquid are subjected to mass transfer in the tower, so that the gas-liquid contact time is prolonged; the concentration of the particulate matters in the waste gas is sharply reduced, and the purification is finished; the spray liquid enters the circulating water tank 3, the control system 2 controls the opening of the driving motor, the rake tooth chain 15.4 conveys impurities and the like in the circulating water tank 3 to the slag outlet 15.5 for discharge, the whole process is full-automatic, manual slag removal is not needed, and the machine does not need to be stopped.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (5)
1. A metal polishing waste gas purification device comprises a tower body (1) and a control system (2); the method is characterized in that: the bottom of the tower body (1) is provided with a circulating water tank (3), the top of the tower body (1) is provided with an air outlet (4), the air outlet (4) is connected with the air inlet end of a centrifugal fan (6) through an exhaust pipe (5), and the air outlet end of the centrifugal fan (6) is connected with a chimney (7); an air inlet pipe (8) is arranged at the bottom of the side wall of the tower body (1), and a plurality of air guide plates (9) are arranged at the air outlet end of the air inlet pipe (8); a sieve plate (10) and a spraying system are sequentially arranged above the gas guide plate (9), the spraying system comprises an annular water distribution pipe (11) arranged above the sieve plate (10) and a spraying head (12) arranged on the water distribution pipe (11), the center of the water distribution pipe (11) is connected with a water inlet pipe (13), the other end of the water inlet pipe (13) is connected with a circulating pump (14) in the circulating water tank (3), an automatic slag discharging device (15) is arranged in the circulating water tank (3), the automatic slag discharging device (15) comprises a slag discharging channel (15.1) which is communicated with the side wall of the circulating water tank (3) and is obliquely and upwards arranged, a driving wheel (15.2) arranged at the inner top of the slag discharging channel (15.1), a driving motor for driving the driving wheel (15.2) and two driven wheels (15.3) arranged at the bottom of the circulating water tank (3), a rake tooth chain (15.4) is wound between the driving wheel (15.2) and the driven wheel (15.3); the driving motor, the centrifugal fan (6) and the circulating pump (14) are all connected with the control system (2).
2. The metal grinding exhaust gas purification apparatus as recited in claim 1, wherein: a slag outlet (15.5) is also arranged below the driving wheel (15.2).
3. The metal grinding exhaust gas purification apparatus as recited in claim 1, wherein: the number of the air guide plates (9) is 3-8; the air guide plate (9) is a straight plate, an arc-shaped plate or the upper part is a straight plate and the lower part is an arc-shaped plate; the horizontal spacing between the air guide plates (9) is gradually increased along the airflow flowing direction; the bottom ends of the air guide plates (9) are distributed in a step shape which gradually descends in the vertical direction along the flowing direction of the air flow.
4. The metal grinding exhaust gas purification apparatus as recited in claim 1, wherein: a cyclone (21) and a baffling demisting plate (22) are also arranged above the water distribution pipe (11).
5. The metal grinding exhaust gas purification apparatus as recited in claim 1, wherein: the sieve plate (10) is at least provided with four layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020987074.XU CN212651551U (en) | 2020-06-03 | 2020-06-03 | Metal exhaust gas purification equipment that polishes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020987074.XU CN212651551U (en) | 2020-06-03 | 2020-06-03 | Metal exhaust gas purification equipment that polishes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212651551U true CN212651551U (en) | 2021-03-05 |
Family
ID=74752413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020987074.XU Expired - Fee Related CN212651551U (en) | 2020-06-03 | 2020-06-03 | Metal exhaust gas purification equipment that polishes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212651551U (en) |
-
2020
- 2020-06-03 CN CN202020987074.XU patent/CN212651551U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |