CN112191052B - Dust treatment method and dust treatment system for stone processing - Google Patents
Dust treatment method and dust treatment system for stone processing Download PDFInfo
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- CN112191052B CN112191052B CN202011261366.6A CN202011261366A CN112191052B CN 112191052 B CN112191052 B CN 112191052B CN 202011261366 A CN202011261366 A CN 202011261366A CN 112191052 B CN112191052 B CN 112191052B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/022—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by using a liquid curtain
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/12—Washers with plural different washing sections
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Abstract
The invention discloses a dust treatment method and a dust treatment system for stone processing, and belongs to the technical field of stone dust treatment. The method comprises the following steps: sending dust generated by automatic stone processing equipment to a washing tank for washing; dust is sucked through a dust removing chamber near the manual processing area, the sucked dust sequentially passes through a water curtain wall, a spray chamber and a water retaining curtain and is discharged by an exhaust fan, water of the water curtain wall is collected through a water receiving groove, and the water is uniformly distributed on the water curtain wall through a water distributing groove; collecting spray in a spray chamber, water dripped on a water retaining curtain and clear water overflowed from a water receiving tank through a sedimentation tank, and delivering the clear water to a water distribution tank for recycling after sedimentation; collecting wastewater output by a water washing tank, a water distribution tank, a water receiving tank and a sedimentation tank through a collecting tank, conveying the wastewater to a sedimentation tower, adding PAC (PAC) into the sedimentation tower, and carrying out sedimentation treatment through the sedimentation tower; delivering the sediment of the sedimentation tower to a wastewater treatment system, and delivering clear liquid to a clear water tank for storage; the clean water tank sends clean water to the water distribution tank and the washing tank.
Description
Technical Field
The invention belongs to the technical field of stone dust treatment, and particularly relates to a dust treatment method and a dust treatment system for stone processing.
Background
The stone has long been widely used in the fields of construction, indoor and outdoor decoration and the like, and along with the improvement of the living standard of people, the stone has higher requirements on the quality, the material, the size, the shape and the like of the stone. The stone surface can be processed into a burning surface, a smooth surface, a litchi surface, a longan surface and the like, and the stone can be processed into various shapes according to the needs. The stone can be processed into various shapes and the surface of the stone can be processed according to the requirement, so that the stone can be understood as a customized product; therefore, in the stone processing process, automatic stone processing equipment is generally adopted for automatic processing, and manual processing can be performed through corresponding equipment by manpower. Both manual and partially automated processing equipment can generate a large amount of dust, which can cause irreversible damage to the body, such as silicosis, if the body is inhaled in large amounts and for a long period of time.
In the prior art, the dust treatment of an automatic processing device generally adopts the following modes: the dust exhaust port of the stone automatic processing equipment and the dust hood at the dust generation position of the stone automatic processing equipment are connected with the air inlet of the washing tank through a pipeline with a fan, dust is discharged after washing, and wastewater in the washing tank is sent to a wastewater treatment system for treatment. However, dust in the manual processing area is not easy to handle, and in addition, a large amount of water is used for dust treatment, and the wastewater after being treated by the wastewater treatment system is usually subjected to retreatment, but at least the following two problems exist: 1. the stone waste water generally contains a lubricant (the large cutting waste water occupies the vast majority of the stone waste water, and basically contains the lubricant therein), so that the lubricant is not only lost, but also certain influence (the lubricant is generally mineral ester or plant ester) is caused on equipment, and the dust treatment effect is also influenced; 2. the stone wastewater has complex components, contains not only lubricant and engine oil, but also particles with different particle sizes; the treatment difficulty is high, and the treatment cost is generally about 1 yuan/ton.
Disclosure of Invention
In order to solve the problems, the embodiment of the invention provides a dust treatment method and a dust treatment system for stone processing, wherein different dust removal modes are adopted in an artificial processing area and an automatic processing area, and a special dust removal chamber is adopted in the artificial processing area for dust collection, so that the dust removal effect is good and the water consumption is low; the waste water generated by dust treatment in the manual processing area and the automatic processing area is collected and then sent to the settling tower, so that the treatment speed is high, the treatment cost is low (which can be as low as 0.5 yuan/ton), and the water lost in the treatment process can be supplemented by spraying in the dust removal chamber. The technical scheme is as follows:
in one aspect, an embodiment of the present invention provides a dust treatment method for stone processing, including:
automatic dust treatment in a processing area: the dust generated by the stone automatic processing equipment is sent to a washing tank for washing, and the dust generated by the stone automatic processing equipment comprises dust output by a dust discharge port of the stone automatic processing equipment and dust collected by a dust hood from a dust generation place of the stone automatic processing equipment;
and (3) dust treatment in a manual processing area: dust is sucked through a dust removing chamber 1 near the manual processing area, the sucked dust sequentially passes through a water curtain wall 2, a spray chamber and a water retaining curtain 8 and is discharged to the outside of a workshop through an exhaust fan 4, water of the water curtain wall 2 is collected through a water receiving groove 6 at the bottom of the water curtain wall 2, and the water is uniformly distributed on the water curtain wall 2 through a water distribution groove 5 at the top of the water curtain wall 2; collecting spray in a spray chamber, water dripped on a water retaining curtain 8 and clear water overflowed from a water receiving tank 6 through a sedimentation tank 7 at the bottom of the dust removal chamber 1, and delivering the clear water settled by the sedimentation tank 7 to a water distribution tank 5 for reuse after sedimentation; the clean water is sprayed in the spraying chamber;
wastewater treatment: collecting wastewater output by a water washing tank, a water distribution tank 5, a water receiving tank 6 and a sedimentation tank 7 through a collecting tank, conveying the wastewater to a sedimentation tower, adding PAC (PAC) into the sedimentation tower, and carrying out sedimentation treatment through the sedimentation tower; the sediment of the sedimentation tower is sent to a wastewater treatment system, and the clear liquid is sent to a clear water tank for storage; the clean water tank sends clean water to the water distribution tank 5 and the water washing tank.
Preferably, water is sprayed to the upper portion of the water deflector 8.
Specifically, the automatic processing area and the manual processing area in the embodiment of the invention are positioned in different workshops or different areas of the same workshop; the stone automatic processing equipment comprises a stone fire surface processing device, a stone litchi surface processing device, a stone longan surface processing device and a stone engraving device.
Specifically, in the embodiment of the invention, wastewater is tangentially fed into the bottom of a feed tank 13 at the top of a settling tower, and PAC is added at the same time; the wastewater enters the feed chute 13 to form rotational flow and enters a central guide pipe 15 at the bottom of the feed chute 13, and then flows from the central guide pipe 15 to the lower part of the sedimentation tower; clear liquid generated by sedimentation in the sedimentation tower is sent to a clean water tank through a pipeline by an overflow weir 14 at the top of the sedimentation tower, sediment generated by sedimentation is sent to a wastewater treatment system through a pipeline by a sediment outlet at the bottom of the sedimentation tower, and PAM is added in the wastewater treatment system.
On the other hand, the embodiment of the invention also provides a dust treatment system for stone processing, which comprises a sedimentation tower, a clean water tank, at least one washing tank, a plurality of dust suction hoods and a plurality of dust removal chambers 1; the dust exhaust port of the stone automatic processing equipment and the dust suction hood at the dust generation position of the stone automatic processing equipment are connected with the air inlet of the washing tank through a pipeline with a fan; the dust removal chambers 1 are arranged on the adjacent outer sides of the manual processing area, and a plurality of dust removal chambers 1 are arranged in parallel front and back; the inner side of the dust removal chamber 1 is open, a water curtain wall 2 is arranged in the vertical direction, and a shutter 3 is arranged on the outer side wall surface; an exhaust fan 4 is arranged on the inner side of the shutter 3; the upper end of the water curtain wall 2 is provided with a water distribution groove 5 along the front-back direction, and the lower end of the water curtain wall is provided with a water receiving groove 6 along the front-back direction; the outer side of the water distribution tank 5 is fixed on the upper end of the water curtain wall 2, the top of the outer side of the water curtain wall is provided with an overflow port, the lower end of the water curtain wall 2 is positioned in the water receiving tank 6, the top of the outer side of the water receiving tank 6 is provided with a toothed water outlet, the bottom of the dust removing chamber 1 is provided with a sedimentation tank 7, the sedimentation tank 7 can receive water discharged from the outer side of the water receiving tank 6, and the upper part of the sedimentation tank is connected with the water distribution tank 5 through a pipeline with a pump; a water blocking curtain 8 through which wind energy passes is arranged in the dust chamber 1 along the front-back direction; the water retaining curtain 8 is positioned above the sedimentation tank 7 adjacently and divides the dust removal chamber 1 into a spray chamber and an exhaust chamber from inside to outside, the top of the spray chamber is provided with a plurality of spray nozzles 9, and the spray nozzles 9 are connected with the clean water supply structure through pipelines; the sewage outlets on the water washing tank, the water distribution tank 5, the water receiving tank 6 and the sedimentation tank 7 are all connected with the collecting tank through pipelines, the collecting tank is conveyed to the sedimentation tower through a ditch, the tail end of the ditch is connected with the feeding tank 13 of the sedimentation tower through a pipeline with a conveying pump, the overflow weir 14 of the sedimentation tower is connected with a clean water tank through a pipeline, the clean water tank is connected with the water distribution tank 5 and the water washing tank through pipelines, and the sediment outlet of the sedimentation tower is connected with a wastewater treatment system through a pipeline.
The sedimentation tower comprises a tower body 11 which is vertically arranged and is cylindrical, a plurality of supporting legs 12 for supporting the tower body 11, a descending outlet at the bottom of the tower body 11, an overflow weir 14 at the outer edge of the top of the tower body 11, a central flow guide pipe 15 which is arranged in the tower body 11 coaxially with the tower body 11, a feeding groove 13 which is arranged at the top end of the central flow guide pipe 15 coaxially with the top of the tower body 11, and a PAC automatic adding structure at the top of the tower body 11, wherein the bottom of the tower body 11 is conical; the upper end of the central guide pipe 15 is higher than the overflow weir 14, and the lower end of the central guide pipe is positioned above the conical bottom from the lower end of the tower 11; the feeding groove 13 is a round groove and is positioned above the liquid level in the tower body 11, a feeding pipe is arranged on the feeding groove, and the diameter of the feeding pipe is 1.5-3.0 times of that of the central guide pipe 15; the feeding pipe 16 is tangent with the side wall at the bottom of the feeding groove 13 and is connected with the tail end of the ditch through a pipeline with a conveying pump, the upper end of the central guide pipe 15 extends upwards into the feeding groove 13 and is higher than the feeding pipe 16, and the PAC automatic adding structure is connected with the feeding groove 13 through a pipeline.
Specifically, the diameter of the sedimentation tower in the embodiment of the invention is 1.5-3.0m, and the height thereof is 6-10m; the distance between the upper end of the central guide pipe 15 and the bottom of the feed chute 13 is 15-25cm.
Specifically, a drain outlet is formed in the bottom of the front side or the bottom of the rear side of the water distribution tank 5 in the embodiment of the invention, a drain outlet is formed in the bottom of the water receiving tank 6, a drain outlet is formed in the bottom of the sedimentation tank 7, and the water distribution tank 5 and the water receiving tank 6 are rectangular grooves arranged along the front-back direction.
Specifically, workshops in which the manual processing areas are located in the embodiment of the invention are arranged along the front-back direction, and a row of dust removal chambers 1 are respectively arranged on the left wall surface and the right wall surface of the workshops; the water curtain wall 2 is composed of a plurality of wavy strips which are arranged side by side from front to back and are wavy, and the louver blades of the louver 3 are obliquely arranged downwards from inside to outside.
Preferably, a spray pipe 10 is arranged at the top of the spray chamber and positioned on the adjacent inner side of the water baffle curtain 8; the spray pipe 10 is arranged along the front and back direction, and a plurality of spray holes are arranged on the outer side of the spray pipe in parallel front and back, and are connected with the clean water supply structure through pipelines; the spraying holes face the water retaining curtain 8.
The technical scheme provided by the embodiment of the invention has the beneficial effects that: the embodiment of the invention provides a dust treatment method and a dust treatment system for stone processing, which adopt different dust removal modes in a manual processing area and an automatic processing area, wherein the manual processing area adopts a special dust removal chamber to remove dust, so that the dust removal effect is good and the water consumption is low; the waste water generated by dust treatment in the manual processing area and the automatic processing area is summarized and then sent to the settling tower, so that the treatment speed is high, the treatment cost is low (which can be as low as 0.5 yuan/ton), the water lost in the treatment process can be supplemented by spraying in the dust removal chamber, and clear water is basically not needed to be supplemented.
Drawings
FIG. 1 is a schematic block diagram of a dust handling system for stone processing provided in an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the dust chamber;
fig. 3 is a schematic structural view of the settling tower.
In the figure: 1 a dust removal chamber, 2 water curtain walls, 3 shutter, 4 exhaust fans, 5 water distribution tanks, 6 water receiving tanks, 7 sedimentation tanks, 8 water retaining curtains, 9 spray nozzles, 10 spray pipes, 11 tower bodies, 12 supporting legs, 13 feeding tanks, 14 overflow weirs, 15 central guide pipes and 16 feeding pipes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
Example 1
Referring to fig. 1 to 3, an embodiment of the present invention provides a dust treatment system for stone processing, which includes a settling tower, a clean water tank, at least one water washing tank (typically common to a plurality of adjacent stone automatic processing apparatuses), a plurality of suction hoods (provided directly above a dust generation place), and a plurality of dust removal chambers 1 (not affecting the operation of workers), etc. Wherein, the dust exhaust port of the stone automatic processing equipment and the dust hood at the dust generation position of the stone automatic processing equipment are connected with the air inlet (under the liquid level of the water washing tank) of the water washing tank through a pipeline with a fan. The bottom of the washing tank is provided with a sewage outlet (used for discharging waste water), and the top of the washing tank is provided with an exhaust port. The adjacent outside in manual processing district is located to dust removal room 1, and a plurality of dust removal rooms 1 set up side by side around, for the convenience of description, this patent sets up the workshop that manual processing district dust removal was located along fore-and-aft setting. The manual processing area and the stone automatic processing equipment can be located in the same workshop or in different workshops. The inner side of the dust chamber 1 is opened towards the manual processing area and is provided with a water curtain wall 2 along the vertical direction to seal the inner side of the dust chamber 1, and the outer side wall surface of the dust chamber is provided with a shutter 3 to exhaust outwards. The inside of the louver 3 is provided with an exhaust fan 4 for forced exhaust outwards, thereby sucking dust into the dust chamber 1, preferably a waterproof fan. The upper end of the water curtain wall 2 is provided with a water distribution groove 5 along the front and back direction for uniformly distributing water to the water curtain wall 2, and the lower end (suspended and positioned in water) is provided with a water receiving groove 6 along the front and back direction for receiving water flowing down the water curtain wall 2. The outside of water distribution tank 5 is fixed on the upper end of water curtain 2 and its outside top is equipped with overflow mouth (horizontal mouth to guarantee evenly distributed), and the lower extreme of water curtain 2 is located water receiving tank 6, and water receiving tank 6 can regularly clear up large granule's material (like the manual work drags out), and water receiving tank 6's outside top is equipped with dentate delivery port (higher than sedimentation tank 7) and makes clear solution backward. The bottom of the dust chamber 1 is provided with a sedimentation tank 7 for sedimentation of water for reuse, the bottom of the dust chamber 1 is provided with a water tank by water-proof treatment, and the outer side of the water receiving tank 6 can be provided with an inner side wall of the sedimentation tank 7. The sedimentation tank 7 can receive the water discharged from the outside of the water receiving tank 6 and the upper part thereof (the water discharged from the water receiving tank 6 is cleaner after sedimentation) is connected with the water distribution tank 5 (the top or the upper part of the front and rear sides) through a pipeline with a pump. A water baffle 8 (vertical arrangement) through which wind energy passes is arranged in the dust chamber 1 along the front and back directions. The water retaining curtain 8 (the upper end of which can be fixed at the top of the dust removal chamber 1) is positioned above the sedimentation tank 7 adjacently and divides the dust removal chamber 1 into a spray chamber and an exhaust chamber from inside to outside, the top of the spray chamber is provided with a plurality of spray nozzles 9 (the spray nozzles can be arranged side by side from front to back), and the spray nozzles 9 are connected with a clean water supply structure (in particular a tap water pipe) through pipelines. The water retaining curtain 8 and the spray nozzle 9 are used for improving the dust removal effect, and the water retaining curtain 8 is specifically gauze. The drain outlets (all the sediments output from the bottom) on the water washing tank, the water distribution tank 5, the water receiving tank 6 and the sedimentation tank 7 are all connected with a collecting tank through pipelines, and the collecting tank is conveyed to the sedimentation tower through a ditch. The sedimentation tower is specifically a vertical flow sedimentation tower, and PAC is added into the sedimentation tower. The end of the ditch is connected to (a feed pipe 16 of) a feed chute 13 of the settling tower by a pipe with a transfer pump, and an overflow weir 14 of the settling tower is connected to a clean water tank by a pipe (preferably an inclined down pipe to reduce the use of the pump, correspondingly, the clean water tank is lower than the overflow weir 14). The clean water tank is connected with the water distribution tank 5 (upper part) and the water washing tank (output according to the demand) through a pipeline (with a pump), and a sediment outlet of the sedimentation tower is connected with a wastewater treatment system (usually a multi-stage sedimentation tank or a multi-stage sedimentation tower, and sediment is sent into a filter press for filter pressing treatment) through a pipeline.
Referring to fig. 3, the settling tower in the embodiment of the present invention includes a vertically disposed cylindrical tower body 11, a plurality of supporting legs 12 (disposed at the lower portion of the tower body 11, the plurality of supporting legs 12 are uniformly distributed and all vertically disposed), a descending outlet (bottom end of conical bottom) at the bottom of the tower body 11, an overflow weir 14 (similar to a conventional structure, supernatant overflows into the overflow weir 14 from the top of the tower body 11, an annular structure coaxially disposed with the tower body 11), a central guide tube 15 (circular tube) disposed in the tower body 11 and coaxially disposed with the tower body 11, a feeding groove 13 (for feeding) coaxially disposed at the top end of the central guide tube 15, and a PAC automatic adding structure (for adding PAC into the feeding groove 13, which specifically includes a storage tank (higher than the bottom of the feeding groove and containing PAC solution therein)), the bottom of the tower body 11 is conical bottom. The upper end of the central draft tube 15 is higher than the overflow weir 14, and its lower end is located above the conical bottom to the lower part of the tower 11 (which requires that the sediment accumulated at the conical bottom cannot be disturbed to ensure the separation effect). Wherein the feed chute 13 is a circular chute which is positioned above the liquid level in the tower body 11, and is provided with a feed pipe 16, and the diameter of the feed pipe is 1.5-3.0 times of that of the central guide pipe 15. The feeding pipe 16 is tangent to the side wall of the bottom of the feeding groove 13, so that the entering liquid circularly moves around the annular groove between the feeding groove 13 and the central guide pipe 15 to form vortex and is connected with the tail end of the ditch through a pipeline with a conveying pump, the upper end of the central guide pipe 15 extends upwards into the feeding groove 13 and is higher than the feeding pipe 16, and the PAC automatic adding structure is connected with the feeding groove 13 through the pipeline.
Specifically, the diameter of the sedimentation tower in the embodiment of the invention is 1.5-3.0m (the wastewater treatment capacity is less, the diameter is smaller), and the height is 6-10m; the distance between the upper end of the central guide pipe 15 and the bottom of the feed chute 13 is 15-25cm.
Specifically, the front side bottom or the rear side bottom of the water distribution tank 5 in the embodiment of the present invention is provided with a drain (output sediment (waste water)), the bottom of the water receiving tank 6 is provided with a drain (output sediment (waste water)), and the bottom of the sedimentation tank 7 is provided with a drain (output sediment (waste water)). The water distribution tank 5 and the water receiving tank 6 are rectangular grooves arranged along the front-back direction.
Specifically, workshops (generally rectangular workshops) where the manual processing areas are located in the embodiment of the invention are arranged along the front-back direction, and a row of dust removal chambers 1 are respectively arranged on the left and right wall surfaces of the workshops. The dust chamber 1 may be a rectangular chamber, which may be constructed of bricks. The water curtain wall 2 is composed of a plurality of wavy strips (vertically arranged, made of metal and capable of increasing the contact opportunity of water and dust) which are arranged side by side from front to back, and the distance between the adjacent wavy strips is 0.3 cm to 0.8cm. The shutter of the shutter 3 is arranged obliquely downwards from inside to outside. The fans 4 are located above the sedimentation tank 7, the two fans 4 are arranged side by side, a door which can be opened and closed (can be closed during use and opened during maintenance or cleaning) is arranged on the outer side wall surface of the dust removal chamber 1 and between the two fans 4, and the door is located above the sedimentation tank 7.
Preferably, the spray pipe 10 is arranged at the top of the spray chamber and adjacent to the inner side of the water screen 8 in the embodiment of the invention. Wherein, the spray pipe 10 is arranged along the front and back direction, and a plurality of spray holes are arranged in parallel on the front and back of the outer side of the spray pipe, and are connected with the clean water supply structure through pipelines. The spray holes face the water retaining curtain 8. The spray pipe 10 can be opened and closed, can be opened when the water retaining curtain 8 is cleaned, and can be opened to improve the dust removal effect when the dust removal effect of the dust removal chamber 1 is not ideal. Further, the top of the dust chamber 1 is provided with a reel (on which a locking structure is provided to prevent the reel from rotating) in the front-rear direction. The water screen 8 is wound around a reel, and the front and rear sides of the lower end thereof are detachably fixed (by a jig or the like) to the corresponding wall surfaces (front and rear wall surfaces) of the dust chamber 1. The water screen 8 may be wound up on a spool for retraction when not in use. Wherein, the corresponding wall surfaces of the water retaining curtain 8 and the dust chamber 1 are slightly provided with gaps, and the dust removing effect is not affected.
Example 2
Referring to fig. 1-3, an embodiment of the present invention provides a dust treatment method for stone processing, which may employ the treatment system disclosed in embodiment 1, the method comprising:
automatic dust treatment in a processing area: the dust generated by the stone automatic processing equipment is sent to the washing tank for washing, and the dust generated by the stone automatic processing equipment comprises dust output by a dust discharge port of the stone automatic processing equipment, dust collected by a dust hood from a dust generation part of the stone automatic processing equipment and the like, and is similar to the prior art.
And (3) dust treatment in a manual processing area: dust is sucked through the dust removing chambers 1 (a plurality of dust removing chambers 1 arranged side by side can be selectively opened according to the requirement) near the manual processing area, and sucked dust sequentially passes through the water curtain wall 2, the spray chamber and the water retaining curtain 8 and is discharged to the outside of a workshop (the outside of the left wall surface and the right wall surface of the workshop) by the exhaust fan 4. The water of the water curtain wall 2 is collected through the water receiving groove 6 at the bottom of the water curtain wall 2, and is uniformly distributed on the water curtain wall 2 through the water distribution groove 5 at the top of the water curtain wall 2. And after the spray in the spray chamber, the water dripped on the water retaining curtain 8 and the clean water overflowed from the water receiving tank 6 are collected and settled by the settling pond 7 at the bottom of the dust chamber 1, the clean water settled by the settling pond 7 is sent to the water distributing tank 5 for recycling. Clean water is sprayed in the spray chamber.
Wastewater treatment: collecting wastewater output by a water washing tank, a water distribution tank 5, a water receiving tank 6 and a sedimentation tank 7 through a collecting tank, conveying the wastewater to a sedimentation tower, adding PAC (PAC) into (a feed tank 13) of the sedimentation tower, wherein the PAC dosage is 50-80g/m 3 And (5) waste water. And carrying out sedimentation treatment through a sedimentation tower. The sediment of the sedimentation tower is sent to a wastewater treatment system (the sedimentation tower in the embodiment can be used for outputting the sediment for 0.5 to 2.0 hours without complete sedimentation) or to a filter press (the structure in the wastewater treatment system), and the clear liquid is sent to a clear water tank for storage. The clean water tank sends clean water to the water distribution tank 5 and the water washing tank.
Preferably, water is sprayed to the upper portion of the water deflector 8.
Specifically, the automatic processing area and the manual processing area in the embodiment of the invention are positioned in different workshops or different areas of the same workshop; the automatic stone processing equipment comprises a stone fire surface processing device, a stone litchi surface processing device, a stone longan surface processing device, a stone engraving device and the like.
Specifically, in the present example, wastewater was fed tangentially into the bottom of the feed tank 13 at the top of the settling tower while PAC was added. The wastewater enters the feed tank 13 to form rotational flow (which is convenient for sedimentation and PAC is evenly mixed in) and enters the central guide pipe 15 at the bottom of the feed tank 13, and then flows from the central guide pipe 15 to the lower part of the sedimentation tower. The clear liquid produced by sedimentation in the sedimentation tower is sent to a clean water tank through a pipeline by an overflow weir 14 at the top of the sedimentation tower, and the sediment produced by sedimentation is sent to a wastewater treatment system through a pipeline by a sediment outlet at the bottom of the sedimentation tower, wherein PAM (usually in a sedimentation tank) is added.
Pumps, valves, flow valves and the like are arranged on the pipelines among the structures according to the requirements.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A dust treatment system for stone processing, which is characterized by comprising a sedimentation tower, a clean water tank, at least one washing tank, a plurality of dust suction hoods and a plurality of dust removal chambers (1);
the dust exhaust port of the stone automatic processing equipment and the dust suction hood at the dust generation position of the stone automatic processing equipment are connected with the air inlet of the washing tank through a pipeline with a fan;
the dust removal chambers (1) are arranged on the adjacent outer sides of the manual processing area, and the dust removal chambers (1) are arranged in parallel front and back; the inner side of the dust removal chamber (1) is open, a water curtain wall (2) is arranged in the vertical direction, and a shutter (3) is arranged on the outer side wall surface of the dust removal chamber; an exhaust fan (4) is arranged on the inner side of the shutter (3); the upper end of the water curtain wall (2) is provided with a water distribution groove (5) along the front-back direction, and the lower end of the water curtain wall is provided with a water receiving groove (6) along the front-back direction; the outer side of the water distribution groove (5) is fixed on the upper end of the water curtain wall (2), the top of the outer side of the water curtain wall is provided with an overflow port, the lower end of the water curtain wall (2) is positioned in the water receiving groove (6), the top of the outer side of the water receiving groove (6) is provided with a toothed water outlet, the bottom of the dust removing chamber (1) is provided with a sedimentation tank (7), the sedimentation tank (7) can receive water discharged from the outer side of the water receiving groove (6), and the upper part of the sedimentation tank is connected with the water distribution groove (5) through a pipeline with a pump; a water blocking curtain (8) through which wind energy passes is arranged in the dust removal chamber (1) along the front-back direction; the water retaining curtain (8) is positioned above the sedimentation tank (7) adjacently and divides the dust removal chamber (1) into a spray chamber and an exhaust chamber from inside to outside, a plurality of spray nozzles (9) are arranged at the top of the spray chamber, and the spray nozzles (9) are connected with the clean water supply structure through pipelines;
the sewage outlets on the water washing tank, the water distribution tank (5), the water receiving tank (6) and the sedimentation tank (7) are all connected with the collecting tank through pipelines, the collecting tank is conveyed to the sedimentation tower through a ditch, the tail end of the ditch is connected with the feeding tank (13) of the sedimentation tower through a pipeline with a conveying pump, the overflow weir (14) of the sedimentation tower is connected with a clean water tank through a pipeline, the clean water tank is connected with the water distribution tank (5) and the water washing tank through pipelines, and the sediment outlet of the sedimentation tower is connected with a wastewater treatment system through a pipeline;
the automatic processing area and the manual processing area are positioned in different workshops or different areas of the same workshop; the stone automatic processing equipment comprises a stone fire surface processing device, a stone litchi surface processing device, a stone longan surface processing device and a stone engraving device; the workshop where the manual processing area is located is arranged along the front-back direction, and a row of dust removal chambers (1) are respectively arranged on the left wall surface and the right wall surface of the workshop;
a spray pipe (10) is arranged at the top of the spray chamber and positioned on the adjacent inner side of the water retaining curtain (8); the spray pipe (10) is arranged along the front and back direction, a plurality of spray holes are arranged on the outer side of the spray pipe in parallel front and back, and the spray pipe is connected with the clean water supply structure through a pipeline; the spraying holes face to the water retaining curtain (8);
the sedimentation tower comprises a tower body (11) which is vertically arranged and is cylindrical, a plurality of supporting legs (12) for supporting the tower body (11), a sediment outlet at the bottom of the tower body (11), an overflow weir (14) at the outer edge of the top of the tower body (11), a central guide pipe (15) which is arranged in the tower body (11) and is coaxial with the tower body (11), a feeding groove (13) which is coaxially arranged at the top end of the central guide pipe (15) and a PAC automatic adding structure at the top of the tower body (11), wherein the bottom of the tower body (11) is conical; the upper end of the central guide pipe (15) is higher than the overflow weir (14), and the lower end of the central guide pipe is arranged at the lower part of the tower body (11) and above the conical bottom; the feeding groove (13) is a round groove and is positioned above the liquid level in the tower body (11), and a feeding pipe (16) is arranged on the feeding groove, and the diameter of the feeding groove is 1.5-3.0 times of that of the central guide pipe (15); the feeding pipe (16) is tangent with the side wall of the bottom of the feeding groove (13) and is connected with the tail end of the ditch through a pipeline with a conveying pump, the upper end of the central guide pipe (15) extends upwards into the feeding groove (13) and is higher than the feeding pipe (16), and the PAC automatic adding structure is connected with the feeding groove (13) through the pipeline.
2. The dust treatment system for stone processing according to claim 1, wherein the diameter of the settling tower is 1.5-3.0m and the height thereof is 6-10m; the distance between the upper end of the central guide pipe (15) and the bottom of the feeding groove (13) is 15-25cm.
3. The dust treatment system for stone processing according to claim 1, wherein a drain outlet is provided at the bottom of the front side or the bottom of the rear side of the water distribution tank (5), a drain outlet is provided at the bottom of the water receiving tank (6), a drain outlet is provided at the bottom of the sedimentation tank (7), and the water distribution tank (5) and the water receiving tank (6) are rectangular tanks arranged along the front-rear direction.
4. The dust treatment system for stone processing according to claim 1, wherein the water curtain wall (2) is composed of a plurality of wavy strips which are arranged side by side from front to back and are wavy, and the louvers of the louver (3) are arranged obliquely downwards from inside to outside.
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