Real stone paint waste gas treatment equipment and method

Abstract

The invention discloses stone-like paint waste gas treatment equipment and method.The stone-like paint waste gas treatment equipment comprises a shell, a first gas inlet pipe, a second gas inlet pipe and a first motor, an exhaust port is formed in the top of the shell, the lower half portion of the shell is a horizontally-arranged silo section of a semicircular cylinder structure, and the first gas inlet pipe and the second gas inlet pipe communicate with the arc face of the silo section correspondingly; the first motor and the second motor are located on the opposite sides of the axis of the silo section respectively, an outer barrel and a plurality of sieve plates are arranged in the silo section, the outer barrel is located on the axis of the silo section, the outer barrel penetrates through the two ends of the silo section, the outer barrel and the silo section are rotationally and hermetically connected, the sieve plates are evenly arranged around the outer barrel at intervals, and the first motor is used for driving the outer barrel to rotate relative to the silo section. According to the invention, paint mist is subjected to four procedures of granulation, rolling and enlarging, drying, screening and separating, and waste gas is treated into a real stone paint solid additive which can be quickly recycled, so that organic waste gas is efficiently treated, the environment is protected, products with high added value are produced, and the enterprise benefit is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, in particular to a real stone paint waste gas treatment device and method. Background Art

[0002] Real stone paint is a decorative paint commonly used for building exterior walls, and its effect imitates the texture of natural stone, so it is also called "imitation stone paint". The main components of real stone paint are emulsion, natural colored sand, additives and water. The emulsion includes acrylic emulsion, silicon-acrylic emulsion, and pure acrylic emulsion. The particle size of natural colored sand is usually between 40 and 120 mesh, and it is made through processes such as premixing, homogeneous mixing, conditioning, and filtration. A large amount of waste gas is generated in each process stage, which not only contains a large amount of organic substances to be cross-linked and polymerized, but also contains a large amount of stone sand fine powder. Existing dust removal and gas filtration systems are difficult to synchronously treat this kind of mixed waste gas, and it is easy to cause internal adhesion and blockage problems.

[0003] Patent CN106621669A discloses a waste gas treatment method for paint mist recovery. By sending a mist-making device to manufacture a liquid mist with a paint-friendly atomizing liquid into a treatment chamber or forming a liquid mist in the treatment chamber, the paint-friendly atomizing liquid is a paint thinner or a paint-friendly material. When the paint mist waste gas enters the treatment chamber, the paint mist particles in the waste gas contact the paint-friendly liquid mist and form large-particle-size viscous colloidal particles. The colloidal particles are separated from the waste gas under the action of gravity or inertial force including centrifugal force, forming a paint liquid that can be pumped out or flowed out. The paint liquid is collected and recovered by the collection device of the atomizing absorption device. This method uses a liquid oil-friendly material to recover the paint mist through the principle of similar compatibility, but it cannot treat the solid powder in the real stone paint waste gas and requires an additional filtration system for further treatment, and the treatment process is relatively cumbersome.

[0004] Patent CN103170422B discloses a paint recovery and recycling device for a spray booth. Under the action of a circulation fan, the excess liquid paint mist during the spraying process is sprayed on a polyester-polyester needle-punched felt filter paper containing a layer of lime powder. After the liquid paint mist is mixed with the lime powder, it is adsorbed on the lime powder. Subsequently, a dust cleaning air pump is used to blow off and recover the solid paint accumulated on the filter paper film, realizing the treatment of the paint mist waste gas. However, the paint mist sprayed on the filter paper will cross-link and finally form a film structure, which not only blocks the filter paper holes and affects subsequent filtration, but also the formed sheet-like solid paint has little recyclable value.

[0005] How to effectively treat the real stone paint waste gas, ensure the long-term stable operation of the treatment equipment, and be able to produce high-value products and recycle them is the key issue that enterprises focus on in research and development. Summary of the Invention

[0006] The object of the present invention is to overcome the shortcomings of the prior art and provide a real stone paint waste gas treatment device and method, so as to solve the problem that the prior art cannot synchronously treat waste gas containing organic crosslinking materials and solid powder materials, and the problem that the subsequent generated waste is not recycled much and has a low added value.

[0007] One object of the present invention is to provide a real stone paint waste gas treatment device, including a housing with an exhaust port at the top, a first inlet pipe, a second inlet pipe, and a first motor. The lower half of the housing is a silo section with a horizontally arranged semi-cylindrical structure. The first inlet pipe and the second inlet pipe are respectively connected to the arc surface of the silo section, and the two are respectively located on the opposite sides of the axis of the silo section. An outer cylinder and a plurality of sieve plates are provided in the silo section. The outer cylinder is located on the axis of the silo section, and the outer cylinder passes through both ends of the silo section. The outer cylinder is rotationally and sealingly connected to the silo section. The sieve plates are evenly spaced around the outer cylinder. The first motor is used to drive the outer cylinder to rotate relative to the silo section.

[0008] Preferably, an inner cylinder, an auger, and a rotating shaft are sequentially arranged from outside to inside in the outer cylinder. The outer cylinder is a cylindrical structure with one end open. A plurality of material passing holes are provided on the outer cylinder, and each material passing hole is located between adjacent sieve plates. A part of the inner cylinder is located inside the outer cylinder, and the other part of the inner cylinder is provided with a discharge port. A feed hole matching the material passing hole is provided on the inner cylinder. The feed hole is one and is located at the uppermost part of the inner cylinder. The outer cylinder is rotationally and sealingly connected to the inner cylinder. A support is fixedly provided on the inner cylinder passing through the outside of the outer cylinder. The rotating shaft passes through the inner cylinder and is rotationally and sealingly connected to it respectively. The auger is fixedly wound around the rotating shaft. The first motor is used to drive the outer cylinder to rotate relative to the housing and the inner cylinder. A second motor is provided on the rotating shaft, and the second motor is used to drive the rotating shaft and the auger to rotate relative to the inner cylinder.

[0009] Preferably, the rotating shaft is a tubular structure. A plurality of air outlet holes are provided on the shaft section of the rotating shaft located inside the inner cylinder. A rotary joint is provided at the end of the shaft section of the rotating shaft (14) located outside the inner cylinder.

[0010] Preferably, the first inlet pipe and the second inlet pipe respectively introduce wet waste gas, and a heater is provided on the second inlet pipe.

[0011] Preferably, the upper half of the housing is a block silo section. A partition plate is provided in the block silo section. The partition plate divides the block silo section into upper and lower parts. A plurality of dust removal bags are provided on the partition plate.

[0012] Preferably, a weight plate is provided at the bottom end of the dust removal bag, and the weight plate is fixedly connected to the dust removal bag.

[0013] Preferably, a rotating rod is provided on the counterweight plate. Both ends of the rotating rod are rotatably connected to the counterweight plate. A magnet is fixedly provided on the rotating rod, and a ferromagnetic head attracted to the magnet is provided at one end of the sieve plate away from the outer cylinder.

[0014] Preferably, the dust removal bags are arranged at intervals. The bottoms of the plurality of dust removal bags extend downward together to form an arc surface adapted to the movement track of the ferromagnetic head. There are a plurality of magnets, and the magnets are evenly distributed around the surface of the rotating rod at intervals. The same-pole sides of the magnets are all arranged towards the axis of the rotating rod, and the magnetic polarities of the peripheries of the plurality of magnets provided on each rotating rod are the same.

[0015] The second object of the present invention is to provide a method for treating the waste gas of real stone paint, including the following steps:

[0016] S1. Put dry powder into the silo section as a fluidized bed;

[0017] S2. Pass wet waste gas into the silo section through the first inlet pipe. The wet waste gas acts as a binder and contacts the dry powder in the silo section to form irregular solid materials;

[0018] S3. The sieve plate stirs the fluidized bed to make the irregular solid materials roll continuously and combine with the binder multiple times to form round solid granular materials;

[0019] S4. Pass dry and hot gas into the silo section through the second inlet pipe;

[0020] S5. The round solid granular materials grow continuously. The round solid granular materials are screened by the sieve plate and transferred to the other side of the silo section and dried after contacting the hot gas entering through the second inlet pipe;

[0021] S6. The dried solid granular materials pass through the material passing holes and the feed holes in sequence under the action of the sieve plate and are discharged from the silo section under the action of screw feeding to form granular products imitating natural colored sand.

[0022] Preferably, in step S4, a part of the wet waste gas is heated by a heater and passed into the silo section as dry waste gas. The paint mist in the waste gas crosslinks to form solid paint powder to continuously supplement the dry powder reduced in the silo section.

[0023] The present invention has the following advantages:

[0024] 1. A method for treating the waste gas of real stone paint is disclosed, enabling the paint mist in the wet waste gas to successively undergo four process steps of bonding with dry powder to form solid materials, rounding and increasing in size, drying, and screening and separation, treating the waste gas into a real stone paint solid additive that can be quickly recycled and utilized. It not only efficiently treats organic waste gas and protects the environment, but also produces high-value-added products, greatly improving the enterprise benefits;

[0025] 2. A true stone paint waste gas treatment device is disclosed. By arranging a plurality of sieve plates on the outer cylinder and driving them to rotate continuously, it can not only stir and mix the dry powder, disperse the large agglomerated solid materials that are about to adhere into small particles, but also realize the function of transporting circular granular materials during the rotation process. In cooperation with the inner cylinder and the auger, it achieves a rapid separation effect of the dry powder and the solid materials.

[0026] 3. The end of the sieve plate is installed with a ferromagnetic head that attracts the magnet installed at the bottom of the dust removal bag. During the rotation of the sieve plate, it can drive a plurality of dust removal bags to swing left and right, realizing the automatic ash cleaning function of the dust removal bags and ensuring the long-term operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention;

[0028] Figure 2 is Figure 1 the sectional structure schematic diagram at A in

[0029] Figure 3 is Figure 2 the sectional structure schematic diagram at B in

[0030] Figure 4 is Figure 1 the schematic diagram of the oblique sectional structure in

[0031] Figure 5 is Figure 2 the partial enlarged schematic diagram at C in

[0032] Figure 6 is the sectional structure schematic diagram of the heater.

[0033] In the figure, 1. housing; 2. silo section; 3. block silo section; 4. exhaust port; 5. partition plate; 6. dust removal bag; 7. first intake pipe; 8. second intake pipe; 9. outer cylinder; 10. sieve plate; 11. material passing hole; 12. inner cylinder; 13. feed hole; 14. rotating shaft; 15. auger; 16. discharge port; 17. first motor; 18. second motor; 19. air outlet hole; 20. rotary joint; 21. bevel gear; 22. support; 23. counterweight plate; 24. rotating rod; 25. magnet; 26. ferromagnetic head; 27. heater; 28. outer layer; 29. heating wire; 30. inner layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] A real stone paint waste gas treatment device, as Figure 1 shown, includes a housing 1 with an exhaust port 4 provided at the top, a first intake pipe 7, a second intake pipe 8, a first motor 17, a second motor 18, and a heater 27. The lower half of the housing 1 is a silo section 2 with a horizontally arranged semi-cylindrical structure, and the upper half of the housing 1 is a block silo section 3. The first intake pipe 7 and the second intake pipe 8 are multiple and together form branch pipelines of the main pipeline. The first intake pipe 7 and the second intake pipe 8 are respectively connected to the arc surface at the bottom of the silo section 2, and the two are respectively located on opposite sides of the axis of the silo section 2. As Figure 2 shown, the left side of the silo section 2 is the polymerization part, and the right side of the silo section 2 is the drying part. Wet waste gas containing uncoagulated and dried paint mist is introduced into the first intake pipe 7, and hot air or hot waste gas heated by the heater 27 is introduced into the second intake pipe 8. The silo section 2 is filled with some dry powder to form a fluidized bed.

[0037] As Figure 2 、 Figure 3As shown in the figure, an outer cylinder 9 and a plurality of sieve plates 10 are provided in the silo section 2. The outer cylinder 9 is a cylindrical structure with one end open. The outer cylinder 9 is located on the axis of the silo section 2 and passes through both ends of the silo section 2. The outer cylinder 9 is rotationally and sealingly connected to the silo section 2. The sieve plates 10 are arranged around the outer cylinder 9 at uniform intervals. The output end of the first motor 17 is directly connected to the bottom of the outer cylinder 9 to drive the outer cylinder 9 to rotate relative to the silo section 2. Inside the outer cylinder 9, an inner cylinder 12, an auger 15, and a rotating shaft 14 are installed in sequence from outside to inside. A plurality of material passing holes 11 are formed in the outer cylinder 9. The material passing holes 11 are rectangular openings, and the length of the material passing holes 11 is less than the length of the silo section 2. Each material passing hole 11 is located between adjacent sieve plates 10. A part of the inner cylinder 12 is located inside the outer cylinder 9. The inner cylinder 12 is a tubular structure with both ends blocked. Another part of the inner cylinder 12 is provided with a discharge port 16 for discharging the formed granular material product. A feed hole 13 matching the material passing hole 11 is formed in the inner cylinder 12. The feed hole 13 is also a rectangular hole, and there is one feed hole 13 which is located at the uppermost part of the inner cylinder 12. The outer cylinder 9 and the inner cylinder 12 are rotationally and sealingly connected. A support 22 is fixedly connected to the inner cylinder 12 outside the outer cylinder 9 to make the inner cylinder 12 stationary relative to the ground. The rotating shaft 14 passes through the inner cylinder 12 and is rotationally and sealingly connected to it respectively. The auger 15 is fixedly wound around the rotating shaft 14. The first motor 17 is used to drive the outer cylinder 9 to rotate relative to the housing 1 and the inner cylinder 12. A bevel gear 21 is installed on the rotating shaft 14, and the second motor 18 drives the bevel gear 21 to rotate through gear meshing. The second motor 18 is used to drive the rotating shaft 14 and the auger 15 to rotate relative to the inner cylinder 12.

[0038] As Figure 3 shown, the rotating shaft 14 is a tubular structure. A plurality of air outlet holes 19 are formed in the rotating shaft 14 located inside the inner cylinder 12. A rotary joint 20 is provided at the end of the rotating shaft 14 outside the inner cylinder 12. The rotary joint 20 is externally connected to high-pressure air. The high-pressure air flow enters the inner cylinder 12 through the rotary joint 20, the rotating shaft 14, and the air outlet holes 19, and is opposite to the moving direction of the granular material, reversely blowing the excess dry powder adhered to the surface of the granular material into the housing 1 through the feed hole 13 and the material passing hole 11, avoiding the granular material from carrying out excess dry powder and improving the quality.

[0039] The first intake pipe 7 and the second intake pipe 8 respectively introduce wet waste gas. A heater 27 is installed on the second intake pipe 8. As Figure 6 shown, the heater 27 includes an outer layer 28, an inner layer 30 in a cylindrical structure, and a heating wire 29 wound and fixed between the outer layer 28 and the inner layer 30. The waste gas passes through the inner layer 30 and is heated by the heating wire 29 to form hot gas.

[0040] As Figure 2 、 Figure 4As shown, a partition plate 5 is installed in the block silo section 3. The partition plate 5 divides the block silo section 3 into upper and lower parts. A plurality of mounting holes are formed in the partition plate 5, and a plurality of dust removal bags 6 are fixedly installed in each mounting hole. The dust removal bags 6 can filter and separate the dry powder in the gas floating and discharged, so that it returns to the silo section 2 again for utilization.

[0041] In order to prevent the dust removal bag 6 from being lifted upward by the air flow, a weight plate 23 is installed at the bottom end of the dust removal bag 6. The weight plate 23 is fixedly connected to the dust removal bag 6. The weight plate 23 can straighten the dust removal bag 6, which is beneficial to the air flow filtration.

[0042] A rotating rod 24 is installed on the weight plate 23. The rotating rod 24 is rotatably passed through the weight plate 23 by a threading method. A magnet 25 is fixedly installed on the rotating rod 24. A ferromagnetic head 26 attracted to the magnet 25 is provided at one end of the sieve plate 10 away from the outer cylinder 9. During the process that the sieve plate 10 rotates to drive the ferromagnetic head 26 to gradually approach and move away from the magnet 25, the dust removal bag 6 will swing left and right under the action of the attraction of the magnet 25, and the dust accumulated on the dust removal bag 6 will quickly fall off during the swinging process, realizing the cleaning of the filter holes, which is beneficial to filtration and dust removal.

[0043] The attraction distance of the magnet is limited. When there are multiple dust removal bags 6, the dust removal bags 6 are arranged at intervals. The bottom ends of the multiple dust removal bags 6 extend downward together to form an arc surface adapted to the movement track of the ferromagnetic head 26, so that each dust removal bag 6 can swing left and right. A plurality of magnets 25 are installed. During the left and right swinging process of the magnets 25, the magnets on different dust removal bags 6 will attract each other, reducing the swinging amplitude or even not generating swinging. As Figure 5 shown, a plurality of magnets 25 are installed on each rotating rod 24. The magnets 25 are evenly distributed around the surface of the rotating rod 24 at intervals. The same-pole sides of the magnets 25 are all arranged towards the axis of the rotating rod 24. The magnetic pole polarities of the peripheries of the plurality of magnets 25 provided on each rotating rod 24 are the same, that is, the peripheries of the magnets 25 are all S or N poles, so that different dust removal bags 6 repel each other due to the same magnetic pole of different magnets 25 and will not be connected during the swinging process.

[0044] Working principle: dry powder is put into the silo section 2 to form a fluidized bed, and the wet waste gas of the real stone paint is respectively introduced into the first air inlet pipe 7 and the second air inlet pipe 8. The heater 27 installed on the first air inlet pipe 7 heats the waste gas to form hot air, and the paint mist inside it also solidifies and aggregates into dry powder. The first air inlet pipe 7 introduces dry hot air into the silo section 2, and the second air inlet pipe 8 passes the waste gas to be aggregated into the silo section 2. The wet waste gas to be aggregated contacts the dry powder on the fluidized bed above the second air inlet pipe 8 to form a bonding formation. During this period, the first motor 17 is started, and the first motor 17 drives the screen plate 10 to rotate. The screen plate 10 continuously stirs the dry powder and the irregular solid materials. The irregular solid materials continuously turn over and continue to bond with the wet exhaust gas, rolling into round particles and growing continuously. When the particle size of the particles is larger than the aperture of the screen plate 10, the screen plate 10 moves counterclockwise to move the particles to the other side of the silo section 2, that is, above the first air inlet pipe 7. The first air inlet pipe 7 introduces hot air to dry the particles, and then the screen The plate 10 continues to move to the top, and the granular material is separated from the fluidized bed by the screen plate 10. Two adjacent screen plates 10 form a funnel structure, and the granular material passes through the material hole 11 and the feed hole 13 in turn into the inner cylinder 12. The second motor 18 rotates to drive the rotating shaft 14 and the auger 15 to rotate, and the auger discharges the granular material through the discharge port 16. The whole process realizes the bonding, rounding, drying, separation and discharge functions of the waste gas, so that the waste gas of the real stone paint is converted into high-value-added natural colored sand particles, reducing the natural color Sand usage; part of the dry powder will also follow the granular material into the inner tube 12, and the dry powder will be blown back by introducing high-pressure airflow into the rotary joint 20, which can reduce the discharge of dry powder; the gas in the silo section 2 and the block silo section 3 will be filtered by the dust bag 6 and then discharged, and the dry powder will accumulate on the dust bag 6. The ferromagnetic head at the end of the sieve plate 10 will continuously attract the magnet 25 under the dust bag 6 during the rotation of the sieve plate 10, driving the dust bag 6 to swing left and right, so that the dust will fall off, avoiding clogging of the dust bag 6.

[0045] During the whole process, the rotation of the sieve plate 10 can not only stir, filter and separate the granular materials, but also can control the magnet 25 and the dust bag 6 to swing left and right in a linked manner, thereby realizing the uninterrupted cleaning function of the dust bag 6.

[0046] A method for treating waste gas from real stone paint, based on the above equipment, such as Figure 2 As shown, the following steps are included:

[0047] S1. The dry powder is placed in the silo section 2 as a fluidized bed, and the height of the dry powder is lower than the outer cylinder 9;

[0048] S2. The wet exhaust gas is introduced into the silo section 2 through the first air inlet pipe 7. The wet exhaust gas acts as an organic binder and contacts the dry powder in the silo section 2 to form an irregular solid material;

[0049] S3. The sieve plate 10 agitates the fluidized bed, causing the irregular solid materials to continuously roll and combine with the binder multiple times to form round solid granular materials. The agitation of the sieve plate 10 can also prevent the irregular solid materials from sticking together to form large sheet-like films;

[0050] S4. Dry hot air is introduced into the silo section 2 through the second air inlet pipe 8;

[0051] S5. The round solid granular materials continue to grow. The round solid granular materials and dry powder with small particle sizes can pass through the sieve holes of the sieve plate 10 and be evenly dispersed in the silo section 2. The round solid granular materials with large particle sizes are screened by the sieve plate 10 and transferred to the other side of the silo section 2, where they come into contact with the hot air below and are dried;

[0052] S6. The dried solid granular materials with large particle sizes pass through the material passing holes 11 and the feed holes 13 in sequence under the action of the sieve plate 10, and are discharged from the silo section 2 under the conveying action of the auger 15, forming granular products imitating natural colored sand.

[0053] The dry powder can be calcium powder. Preferably, a heater 27 is used to heat part of the wet exhaust gas as the drying exhaust gas and introduce it into the silo section 2. The paint mist in the wet exhaust gas cross-links to form solid paint powder, and the solid paint powder replaces the calcium powder to continuously supplement the reduced dry powder in the silo section 2.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A real stone paint waste gas treatment device, characterized in that: It includes a housing (1) with an exhaust port (4) provided at the top, a first intake pipe (7), a second intake pipe (8), and a first motor (17). The lower half of the housing (1) is a silo section (2) with a horizontally arranged semi-cylindrical structure. The first intake pipe (7) and the second intake pipe (8) are respectively connected to the arc surface of the silo section (2), and they are respectively located on opposite sides of the axis of the silo section (2). An outer cylinder (9) and a plurality of sieve plates (10) are provided in the silo section (2). The outer cylinder (9) is located on the axis of the silo section (2), and the outer cylinder (9) passes through both ends of the silo section (2). The outer cylinder (9) is rotationally and sealingly connected to the silo section (2). The sieve plates (10) are evenly spaced around the outer cylinder (9). The first motor (17) is used to drive the outer cylinder (9) to rotate relative to the silo section (2).

2. The stone-like paint waste gas treatment equipment according to claim 2, characterized in that: An inner cylinder (12), an auger (15), and a rotating shaft (14) are sequentially arranged from outside to inside in the outer cylinder (9). The outer cylinder (9) is a cylindrical structure with one end open. A plurality of material passing holes (11) are provided on the outer cylinder (9), and each of the material passing holes (11) is located between adjacent sieve plates (10). A part of the inner cylinder (12) is located inside the outer cylinder (9), and another part of the inner cylinder (12) is provided with a discharge port (16). A feed hole (13) matching the material passing hole (11) is provided on the inner cylinder (12). There is one feed hole (13) and it is located at the uppermost part of the inner cylinder (12). The outer cylinder (9) is rotationally and sealingly connected to the inner cylinder (12). A support (22) is fixedly provided on the inner cylinder (12) passing through the outside of the outer cylinder (9). The rotating shaft (14) passes through the inner cylinder (12) and is respectively rotationally and sealingly connected to it. The auger (15) is fixedly coiled around the rotating shaft (14). The first motor (17) is used to drive the outer cylinder (9) to rotate relative to the housing (1) and the inner cylinder (12). A second motor (18) is provided on the rotating shaft (14), and the second motor (18) is used to drive the rotating shaft (14) and the auger (15) to rotate relative to the inner cylinder (12).

3. The stone-like paint waste gas treatment equipment according to claim 2, characterized in that: The rotating shaft (14) is a tubular structure. A plurality of air outlet holes (19) are provided on the shaft section of the rotating shaft (14) located inside the inner cylinder (12). A rotary joint (20) is provided at the end of the shaft section of the rotating shaft (14) located outside the inner cylinder (12).

4. The true stone paint waste gas treatment equipment according to claim 1, characterized in that: The first intake pipe (7) and the second intake pipe (8) respectively introduce wet exhaust gas, and a heater (27) is provided on the second intake pipe (8).

5. The true stone paint waste gas treatment equipment according to claim 3, characterized in that: The upper half of the housing (1) is a block silo section (3). A partition plate (5) is provided in the block silo section (3). The partition plate (5) divides the block silo section (3) into upper and lower parts. A plurality of dust removal bags (6) are provided on the partition plate (5).

6. The stone-like paint waste gas treatment equipment according to claim 5, characterized in that: A weight plate (23) is provided at the bottom end of the dust removal bag (6), and the weight plate (23) is fixedly connected to the dust removal bag (6).

7. The true stone paint waste gas treatment device according to claim 6, characterized in that: A rotating rod (24) is provided on the counterweight plate (23). The two ends of the rotating rod (24) are respectively rotatably connected to the counterweight plate (23). A magnet (25) is fixedly provided on the rotating rod (24). A ferromagnetic head (26) that attracts the magnet (25) is provided at one end of the sieve plate (10) away from the outer cylinder (9).

8. The true stone paint waste gas treatment equipment according to claim 7, characterized in that: The dust removal bags (6) are arranged at intervals. The bottoms of the plurality of dust removal bags (6) extend downward together to form an arc surface adapted to the movement track of the ferromagnetic head (26). There are a plurality of magnets (25). The magnets (25) are evenly distributed around the surface of the rotating rod (24) at intervals. The same-pole sides of the magnets (25) are all arranged towards the axis of the rotating rod (24). The magnetic pole polarities of the peripheries of the plurality of magnets (25) provided on each rotating rod (24) are the same.

9. A method for treating the waste gas of real stone paint, implemented based on any one of claims 1-8, characterized in that, It includes the following steps S1. Put dry powder into the silo section (2) as a fluidized bed; S2. Pass wet waste gas into the silo section (2) through the first intake pipe (7). The wet waste gas acts as a binder and contacts the dry powder in the silo section (2) to form irregular solid materials; S3. The sieve plate (10) stirs the fluidized bed so that the irregular solid materials continuously roll and combine with the binder multiple times to form round solid granular materials; S4. Pass dry hot air into the silo section (2) through the second intake pipe (8); S5. The round solid granular materials continue to grow. The round solid granular materials are screened by the sieve plate (10) and transferred to the other side of the silo section (2) and dried after contacting the hot air entering through the second intake pipe (8); S6. The dried solid granular materials pass through the material passing holes (11) and the feed holes (13) in sequence under the action of the sieve plate (10) and are discharged from the silo section (2) under the action of the screw conveyor (15) to form granular products imitating natural colored sand.

10. A method for treating waste gas of real stone paint according to claim 9, characterized in that: In step S4, a heater (27) is used to heat part of the wet waste gas and pass it into the silo section (2) as dry waste gas. The paint mist in the wet waste gas cross-links to form solid paint powder to continuously supplement the reduced dry powder in the silo section (2).

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