Mixing engineering device for preparing heavy metal contaminated soil composite passivator and use method

Abstract

The invention discloses a material mixing engineering device for preparing a heavy metal contaminated soil composite passivator and a using method, and relates to the technical field of material mixing equipment.The technical scheme includes that the material mixing engineering device comprises a material mixing barrel, a screening shell is fixedly connected to the upper portion of the material mixing barrel, a second motor is arranged on the upper portion of the screening shell, and a first gear is arranged at the output end of the second motor; the first gear is in meshed connection with a second gear, the lower portion of the second gear is fixedly connected with a spiral screen plate, and the spiral screen plate is rotationally connected with the screening shell. By starting a second motor and a fourth motor, the spiral sieve plate can be driven to rotate and vibrate at the same time, so that materials on the surface of the spiral sieve plate are effectively screened, qualified materials after screening can be driven into a discharging opening through a material guide plate and discharged from the discharging opening to enter a material mixing barrel to be mixed, and the material mixing efficiency is improved. And unqualified materials can be scraped off by the scraping plate arranged on the waste material opening.

Description

Technical Field

[0001] The present invention relates to the technical field of mixing equipment, and particularly to a mixing engineering device and a using method for preparing a composite passivator for heavy metal contaminated soil. Background Art

[0002] Since the soil contaminated by heavy metals can no longer be used as the substrate for crop growth, after crops absorb heavy metal ions in the soil, it will affect human health. Therefore, a composite passivator needs to be used. This passivator can react with heavy metal ions to form substances that are difficult for plants to absorb, achieving the purpose of purifying the soil. During the preparation process of the composite passivator, various raw materials such as zeolite, activated carbon, and fly ash need to be mixed evenly. However, the existing mixing equipment has problems such as uneven stirring and insufficient crushing of raw materials, which affect the use effect of the passivator. Therefore, a mixing engineering device that can solve these problems is needed to improve the mixing efficiency and uniformity and meet the use requirements.

[0003] After retrieval, the patent with the Chinese patent number CN113731280B discloses a mixing device and a using method for preparing a composite passivator for heavy metal contaminated soil, including a mixing box with an open top. A cover plate is fixedly connected to the top of the mixing box. A feeding circular tube is embedded on the left side of the top of the cover plate. Both sides of the bottom of the mixing box are fixedly connected with supports, and the bottoms of the two supports are fixedly connected with the same U-shaped base. The present invention is convenient for feeding, and is convenient for single drive to continuously and evenly crush raw materials and rotate and stir them bidirectionally. It can continuously and evenly screen and crush the incoming raw materials, can synchronously stir and flip the raw materials bidirectionally, improve the mixing efficiency and uniformity, and is convenient for uniformly spreading the mixed passivator for movement, meeting the use requirements. Compared with the prior art, the patent with the Chinese patent number CN113731280B can solve the problems that the existing mixing device is not convenient for rotating and stirring raw materials bidirectionally, continuously and evenly crushing them, and uniformly spreading them for movement.

[0004] However, in the actual use process of the above device, the raw materials after crushing can be filtered through a filter screen. However, after using for a period of time, the filtered raw materials will accumulate on the upper part of the filter screen, resulting in blockage of the filter screen, affecting the filtering effect of the material and the mixing effect of the subsequent raw materials. Therefore, a mixing engineering device and a using method for preparing a composite passivator for heavy metal contaminated soil are proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages in the prior art that after the raw materials are crushed, they can be filtered through a filter screen, but after using for a period of time, the filtered raw materials will accumulate on the upper part of the filter screen, resulting in blockage of the filter screen, affecting the filtering effect of the material and the mixing effect of the subsequent raw materials, and to propose a mixing engineering device and a using method for preparing a composite passivator for heavy metal contaminated soil.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A mixing engineering device and a using method for preparing a composite passivator for heavy metal contaminated soil, comprising a mixing barrel, a screening housing fixedly connected to the upper part of the mixing barrel, a second motor arranged on the upper part of the screening housing, a first gear arranged at the output end of the second motor, the first gear meshing with a second gear, a spiral sieve plate fixedly connected to the lower part of the second gear, the spiral sieve plate being rotatably connected between the screening housing, a guide plate fixedly connected to the lower part of the spiral sieve plate, a waste outlet fixedly connected to the left side of the screening housing, a discharge outlet fixedly connected to the right side of the screening housing, and two vibration mechanisms arranged at the bottom of the screening housing, the vibration mechanism comprising a vibration housing fixedly connected to the upper part of the mixing barrel;

[0008] A fourth motor is arranged inside the vibration housing, an eccentric shaft is arranged at the output end of the fourth motor, a connecting plate is rotatably connected to the upper part of the eccentric shaft, a same vibration rod is rotatably connected to the upper part of the connecting plate, the screening housing is fixedly connected to the upper part of the vibration rod. After the crushed raw materials enter the screening housing, the second motor and the fourth motor are started. The spiral sieve plate is driven by the second motor to rotate, so that the crushed raw materials roll downward on the surface of the spiral sieve plate. And the vibration rod is driven by the fourth motor to vibrate up and down, driving the spiral sieve plate to vibrate to further screen the materials. The qualified materials fall to the bottom of the screening housing and are discharged from the discharge outlet through the guide plate, and the unqualified materials are discharged from the waste outlet. A crushing mechanism is fixedly connected to the upper part of the screening housing, a mixing mechanism is fixedly connected inside the mixing barrel, a device base is fixedly connected to the bottom of the mixing barrel, and a scraper is arranged on one side of the waste outlet close to the inside of the screening housing. The unqualified materials on the surface of the spiral sieve plate can be scraped off by the scraper.

[0009] The above technical solutions further include:

[0010] A waste slot is arranged below the waste outlet, and the waste slot is fixedly connected to the mixing barrel.

[0011] A feeding slot is arranged below the discharge outlet, and the feeding slot is fixedly connected to the top of the mixing barrel.

[0012] The crushing mechanism includes a crushing box arranged on the top of the screening housing, a feeding port is fixedly connected to the upper part of the crushing box, the mixed materials are put into the crushing box through the feeding port, a feeding pipe is fixedly connected to the bottom of the crushing box, and the feeding pipe is fixedly connected to the top of the screening housing.

[0013] A third motor is arranged on one side of the crushing box, and a crushing component is arranged at the output end of the third motor.

[0014] The crushing assembly includes a third gear provided at the output end of a third motor. The third gear is meshed with a fourth gear. A crushing roller is fixedly connected to one side of the third gear and the fourth gear close to the crushing box. The crushing roller is rotatably connected to the crushing box.

[0015] The mixing mechanism includes a first motor fixedly connected to the top of the mixing barrel. A rotating shaft is provided at the output end of the first motor. A mixing blade is fixedly connected to the lower part of the rotating shaft. There are two rows of mixing blades.

[0016] A feeding plate is fixedly connected to the upper part of the rotating shaft. The feeding groove is exactly located above the feeding plate.

[0017] A discharge pipe is fixedly connected to the bottom of the mixing barrel. A spreading disc is rotatably connected inside the discharge pipe. An electric valve is arranged inside the discharge pipe. The opening and closing of the discharge pipe can be controlled through the electric valve.

[0018] The using method of the mixing engineering device for preparing the heavy metal contaminated soil composite passivator includes the following steps:

[0019] Step 1: Before use, prepare a sufficient amount of mixed raw materials required for preparation, and then put the raw materials into the crushing box for crushing;

[0020] Step 2: The crushed raw materials enter the screening shell and fall on the surface of the spiral sieve plate. Then, start the second motor and the fourth motor. Drive the spiral sieve plate to rotate through the second motor. The rotation of the spiral sieve plate drives the raw materials to roll downward on the surface of the spiral sieve plate, while the fourth motor drives the spiral sieve plate to vibrate, further screening the materials on the surface of the spiral sieve plate;

[0021] Step 3: The materials are screened on the surface of the spiral sieve plate. The materials with better crushing effect fall into the bottom of the screening shell through the spiral sieve plate, and then are discharged from the discharge port under the drive of the guide plate, while the materials with poor crushing effect will be discharged through the waste material port;

[0022] Step 4: The screened materials enter the inside of the mixing barrel through the feeding groove, and the materials are mixed inside the mixing barrel through the mixing mechanism, and finally are discharged through the discharge pipe arranged at the bottom of the mixing barrel.

[0023] The present invention has the following beneficial effects:

[0024] 1. In the present invention, when the device is in use, the crushed materials can fall into the interior of the screening housing through the feed pipe. By starting the second motor and the fourth motor, the spiral sieve plate can be driven to rotate and vibrate simultaneously, thereby effectively screening the materials on the surface of the spiral sieve plate. The qualified screened materials can be driven by the guide plate into the discharge port and discharged from the discharge port into the mixing barrel for mixing. The unqualified materials will be scraped off by the scraper provided on the waste outlet and automatically fall into the waste chute through the waste outlet for collection. While improving the material screening effect, it can also effectively ensure the collection of the filtered materials, thereby avoiding material blockage of the spiral sieve plate.

[0025] 2. In the present invention, after the materials are screened, they can enter the interior of the mixing barrel through the feeding trough. By driving the rotating shaft to rotate through the first motor, the rotating shaft drives the mixing blades to rotate as well, thereby mixing the materials. The deflector plate provided on the upper part of the rotating shaft can evenly sprinkle the materials when they fall, thereby avoiding the accumulation of the materials falling into the mixing barrel in one place and affecting the mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the mixing engineering device for preparing heavy metal contaminated soil composite passivator proposed by the present invention;

[0027] Figure 2 is a schematic internal structure diagram of the discharge pipe in the present invention;

[0028] Figure 3 is a schematic internal structure diagram of the mixing barrel in the present invention;

[0029] Figure 4 is a schematic internal structure diagram of the screening housing in the present invention;

[0030] Figure 5 is a schematic internal structure diagram of the vibration housing in the present invention;

[0031] Figure 6 is a top view of the crushing mechanism in the present invention;

[0032] Figure 7 is a schematic internal structure diagram of the crushing box in the present invention.

[0033] In the figure: 1, mixing barrel; 2, device base; 3, discharge pipe; 4, waste slot; 5, screening housing; 6, crushing box; 7, first motor; 8, feeding port; 9, material spreading plate; 10, rotating shaft; 11, mixing blade; 12, material deflecting plate; 13, feeding trough; 14, waste outlet; 15, discharge outlet; 16, vibrating housing; 17, spiral sieve plate; 18, guiding plate; 19, feeding pipe; 20, second motor; 21, first gear; 22, second gear; 23, third motor; 24, fourth motor; 25, eccentric shaft; 26, connecting plate; 27, vibrating rod; 28, third gear; 29, fourth gear; 30, crushing roll. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] As Figures 1-7 shown, a mixing engineering device and a using method for preparing a heavy metal contaminated soil composite passivator include a mixing barrel 1. A screening housing 5 is fixedly connected to the upper part of the mixing barrel 1. A second motor 20 is arranged on the upper part of the screening housing 5. A first gear 21 is arranged at the output end of the second motor 20. The first gear 21 is meshed and connected with a second gear 22. A spiral sieve plate 17 is fixedly connected to the lower part of the second gear 22. The spiral sieve plate 17 is rotatably connected with the screening housing 5. A guiding plate 18 is fixedly connected to the lower part of the spiral sieve plate 17. A waste outlet 14 is fixedly connected to the left side of the screening housing 5. A discharge outlet 15 is fixedly connected to the right side of the screening housing 5. Two vibrating mechanisms are arranged at the bottom of the screening housing 5. The vibrating mechanism includes a vibrating housing 16 fixedly connected to the upper part of the mixing barrel 1.

[0037] Inside the vibrating housing 16, a fourth motor 24 is provided. An eccentric shaft 25 is provided at the output end of the fourth motor 24. A connecting plate 26 is rotatably connected to the upper part of the eccentric shaft 25. A same vibrating rod 27 is rotatably connected to the upper part of the connecting plate 26. A screening housing 5 is fixedly connected to the upper part of the vibrating rod 27. After the crushed raw materials enter the screening housing 5, start the second motor 20 and the fourth motor 24. Drive the spiral sieve plate 17 to rotate through the second motor 20 so that the crushed raw materials roll downward on the surface of the spiral sieve plate 17. And drive the vibrating rod 27 to vibrate up and down through the fourth motor 24, driving the spiral sieve plate 17 to vibrate to further screen the materials. The qualified materials fall to the bottom of the screening housing 5 and are discharged from the discharge port 15 through the guide plate 18. The unqualified materials are discharged from the waste material port 14. And a crushing mechanism is fixedly connected to the upper part of the screening housing 5. A mixing mechanism is fixedly connected inside the mixing barrel 1. A device base 2 is fixedly connected to the bottom of the mixing barrel 1. A scraper is provided on one side of the waste material port 14 close to the inside of the screening housing 5. The unqualified materials on the surface of the spiral sieve plate 17 can be scraped off by the scraper.

[0038] A waste material trough 4 is provided below the waste material port 14. The waste material trough 4 is fixedly connected to the mixing barrel 1. A feeding trough 13 is provided below the discharge port 15. The feeding trough 13 is fixedly connected to the top of the mixing barrel 1. The crushing mechanism includes a crushing box 6 provided at the top of the screening housing 5. A feeding port 8 is fixedly connected to the upper part of the crushing box 6. The mixed materials are put into the inside of the crushing box 6 through the feeding port 8. An inlet pipe 19 is fixedly connected to the bottom of the crushing box 6. The inlet pipe 19 is fixedly connected to the top of the screening housing 5. A third motor 23 is provided on one side of the crushing box 6. A crushing component is provided at the output end of the third motor 23. The crushing component includes a third gear 28 provided at the output end of the third motor 23. The third gear 28 is meshed with a fourth gear 29. A crushing roller 30 is fixedly connected to the side of the third gear 28 and the fourth gear 29 close to the crushing box 6. The crushing roller 30 is rotatably connected to the crushing box 6.

[0039] In this embodiment, when the device is in use, first, the materials for mixing are put into the crushing box 6 through the feeding port 8. Then, the third motor 23 is started, and the third gear 28 is driven to rotate by the third motor 23. The rotation of the third gear 28 drives the meshing-connected fourth gear 29 to rotate. The rotation of the third gear 28 and the fourth gear 29 can drive the crushing roller 30 to rotate, so as to crush the input materials. The crushed materials can fall into the inside of the screening housing 5 through the feeding pipe 19. By starting the second motor 20, the first gear 21 can be driven to rotate. The rotation of the first gear 21 drives the meshing-connected second gear 22 to rotate. The rotation of the second gear 22 can drive the spiral sieve plate 17 to rotate. While the spiral sieve plate 17 is rotating, the fourth motor 24 is started to drive the eccentric shaft 25 to rotate. The rotation of the eccentric shaft 25 drives the rotation-connected connecting plate 26 to rotate. The rotation of the connecting plate 26 drives the rotation-connected vibrating rod 27 to vibrate up and down, and then drives the spiral sieve plate 17 to vibrate as well, so as to effectively screen the materials on the surface of the spiral sieve plate 17. The qualified materials pass through the spiral sieve plate 17 after screening and fall to the bottom of the screening housing 5, and are driven by the guide plate 18 into the discharge port 15 and discharged from the discharge port 15 into the mixing barrel 1 for mixing. The unqualified materials will be scraped off by the scraper provided on the waste outlet 14 and automatically fall into the waste trough 4 through the waste outlet 14 for collection. While improving the material screening effect, it can also effectively ensure the collection of the filtered materials, thus avoiding the blockage of the spiral sieve plate 17 by materials.

[0040] Embodiment 2

[0041] As Figures 1-7 shown, the mixing mechanism includes a first motor 7 fixedly connected to the top of the mixing barrel 1. The output end of the first motor 7 is provided with a rotating shaft 10. The lower part of the rotating shaft 10 is fixedly connected with mixing blades 11, and there are two rows of mixing blades 11.

[0042] The upper part of the rotating shaft 10 is fixedly connected with a material distributing plate 12. The feeding trough 13 is located right above the material distributing plate 12. The bottom of the mixing barrel 1 is fixedly connected with a discharge pipe 3. A material spreading plate 9 is rotatably connected inside the discharge pipe 3. An electric valve is arranged inside the discharge pipe 3, and the opening and closing of the discharge pipe 3 can be controlled through the electric valve.

[0043] In this embodiment, after the materials are screened, they can enter the inside of the mixing barrel 1 through the feeding trough 13. Then, the first motor 7 is started to drive the rotating shaft 10 to rotate. The rotation of the rotating shaft 10 drives the mixing blades 11 to rotate, and the materials falling to the bottom of the mixing barrel 1 are mixed. The material distributing plate 12 arranged on the upper part of the rotating shaft 10 can evenly spread the materials when the materials fall, so as to effectively avoid the accumulation of the materials falling into the mixing barrel 1 at one place and affecting the mixing effect. After the mixing is completed, the electric valve inside the discharge pipe 3 is opened, and the materials can be discharged through the discharge pipe 3. When the materials are discharged, the material spreading plate 9 is driven to rotate, ensuring that the materials are discharged evenly and continuously.

[0044] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mixing engineering device for preparing a composite passivating agent for heavy metal-contaminated soil, comprising a mixing barrel (1), characterized in that: A screening housing (5) is fixedly connected to the upper part of the mixing barrel (1), a second motor (20) is arranged on the upper part of the screening housing (5), a first gear (21) is arranged at the output end of the second motor (20), the first gear (21) is meshingly connected to the second gear (22), a spiral screen plate (17) is fixedly connected to the lower part of the second gear (22), the spiral screen plate (17) is rotatably connected to the screening housing (5), a guide plate (18) is fixedly connected to the lower part of the spiral screen plate (17), a waste material port (14) is fixedly connected to the left side of the screening housing (5), a discharge port (15) is fixedly connected to the right side of the screening housing (5), and two vibration mechanisms are arranged at the bottom of the screening housing (5), the vibration mechanism comprises a vibration housing (16) fixedly connected to the upper part of the mixing barrel (1); A fourth motor (24) is arranged inside the vibration housing (16); an eccentric shaft (25) is arranged at the output end of the fourth motor (24); a connecting plate (26) is rotatably connected to the upper portion of the eccentric shaft (25); a vibration rod (27) is rotatably connected to the upper portion of the connecting plate (26); a screening housing (5) is fixedly connected to the upper portion of the vibration rod (27); after the crushed raw materials enter the screening housing (5), the second motor (20) and the fourth motor (24) are started, and the spiral screen plate (17) is driven to rotate by the second motor (20) so as to The crushed raw materials roll downward on the surface of the spiral screen plate (17), and the fourth motor (24) drives the vibration rod (27) to vibrate up and down, driving the spiral screen plate (17) to vibrate and further screen the materials. Qualified materials fall into the bottom of the screening shell (5) and are discharged from the discharge port (15) through the guide plate (18), and unqualified materials are discharged from the waste port (14). The upper part of the screening shell (5) is fixedly connected with a crushing mechanism, the interior of the mixing barrel (1) is fixedly connected with a mixing mechanism, and the bottom of the mixing barrel (1) is fixedly connected with a device base (2).

2. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 1, characterized in that: A waste trough (4) is provided at the lower part of the waste opening (14), and the waste trough (4) is fixedly connected to the mixing barrel (1).

3. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 1, characterized in that: A feeding trough (13) is provided at the lower part of the discharge port (15), and the feeding trough (13) is fixedly connected to the top of the mixing barrel (1).

4. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 1, characterized in that: The crushing mechanism comprises a crushing box (6) arranged on the top of the screening shell (5); a feeding port (8) is fixedly connected to the top of the crushing box (6); mixed materials are fed into the crushing box (6) through the feeding port (8); a feed pipe (19) is fixedly connected to the bottom of the crushing box (6); and the feed pipe (19) is fixedly connected to the top of the screening shell (5).

5. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 4, characterized in that: A third motor (23) is provided on one side of the crushing box (6), and a crushing assembly is provided at the output end of the third motor (23).

6. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 5, characterized in that: The crushing assembly comprises a third gear (28) arranged at the output end of a third motor (23), the third gear (28) being meshingly connected with a fourth gear (29), a crushing roller (30) being fixedly connected to the third gear (28) and the fourth gear (29) on a side close to the crushing box (6), and the crushing roller (30) is rotatably connected to the crushing box (6).

7. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 1, characterized in that: The mixing mechanism comprises a first motor (7) fixedly connected to the top of the mixing barrel (1); a rotating shaft (10) is provided at the output end of the first motor (7); and a mixing blade (11) is fixedly connected to the lower part of the rotating shaft (10).

8. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 7, characterized in that: A material shifting plate (12) is fixedly connected to the upper portion of the rotating shaft (10), and the material feeding trough (13) is located just above the material shifting plate (12).

9. The mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 1, characterized in that: A discharge pipe (3) is fixedly connected to the bottom of the mixing barrel (1), and a material spreading plate (9) is rotatably connected inside the discharge pipe (3).

10. The method for using the mixing engineering device for preparing a composite passivating agent for heavy metal contaminated soil according to claim 1, characterized in that: The following steps are involved: Step 1: Before use, prepare a sufficient amount of the mixed raw materials required for preparation, and then put the raw materials into a crushing box (6) for crushing; Step 2: The crushed raw materials enter the screening housing (5) and fall on the surface of the spiral screen plate (17), and then the second motor (20) and the fourth motor (24) are started, and the spiral screen plate (17) is driven to rotate by the second motor (20). The rotation of the spiral screen plate (17) drives the raw materials to roll downward on the surface of the spiral screen plate (17), and the fourth motor (24) drives the spiral screen plate (17) to vibrate, and further screens the materials on the surface of the spiral screen plate (17); Step 3: The material is screened on the surface of the spiral screen plate (17). The material with better crushing effect falls into the bottom of the screening shell (5) through the spiral screen plate (17), and then is discharged from the discharge port (15) driven by the guide plate (18), while the material with poor crushing effect is discharged through the waste port (14); Step 4: The screened materials enter the mixing barrel (1), and the materials are mixed in the mixing barrel (1) through the mixing mechanism, and finally discharged from the bottom of the mixing barrel (1).

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