A multi-stage air separation device for magnesium hydroxide

Abstract

The utility model discloses a magnesium hydroxide multi-stage air separation device, comprising an air separation box, the left side of the top surface of the air separation box is connected with a feed hopper, and the right side of the top surface of the air separation box is fixedly installed with a powder collecting box; in the utility model, two receiving hoppers are arranged at the gaps between the first conveyor belt, the second conveyor belt and the third conveyor belt which are arranged in a stepped manner, as a plurality of air blowing hoods blow air to the powder in the falling stage, small particles of powder in the magnesium hydroxide powder are blown into the two receiving hoppers under the action of the horizontal wind direction, and large particles of powder in the magnesium hydroxide powder are discharged from the air separation box through the third conveyor belt, at this time, by starting the vibration motor at the bottom of the receiving hopper, since the receiving hopper is elastically connected to the placement port through the rectangular telescopic sleeve, and one end of the receiving hopper is elastically connected to the spring on the support, the vibration motor can drive the receiving hopper to perform high-frequency shaking until the small particles of powder are discharged from the discharge nozzle, so as to achieve the purpose of powder packaging after the magnesium hydroxide air separation.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a multi-stage wind separation device for magnesium hydroxide. Background Art

[0002] Magnesium hydroxide, chemical formula Mg(OH)2, formula weight 58.32. White amorphous powder. Also known as caustic soda, light-burned magnesia, etc., the suspension of magnesium hydroxide in water is called magnesium hydroxide emulsion, or magnesium milk for short. Magnesium hydroxide is a colorless hexagonal crystal or white powder, insoluble in water and alcohol, soluble in dilute acid and ammonium salt solution, and the aqueous solution is weakly alkaline. It can be used to make sugar and magnesium oxide, etc. Because magnesium hydroxide is relatively abundant in nature and its chemical properties are similar to aluminum, users began to use magnesium hydroxide to replace aluminum chloride for fragrance products. It is used as an analytical reagent and also in the pharmaceutical industry. In the preparation process of existing magnesium stearate, the wet magnesium stearate is first dried using a dryer, and then the magnesium stearate is screened using a winnowing machine.

[0003] After searching, the publication number CN217043469U discloses a magnesium stearate air separation device, including an air separation box, wherein a plurality of guide plates are arranged in an upper and lower staggered manner in the air separation box, wherein the guide plates are arranged obliquely and the inclination directions of adjacent guide plates are opposite, and there is a material feeding gap between adjacent guide plates, and a fan facing the material feeding gap is arranged on the side wall of the air separation box, and a dust collector is arranged on the side of the air separation box facing the fan, and a feed pipe is arranged on the top of the air separation box, and the feed pipe is located directly above the higher end of the uppermost guide plate, and a collection box is arranged at the bottom of the air separation box. In the utility model, the wind blown out by the fan drives the magnesium stearate dust to move toward the dust collector and enter the dust collector for collection, so as to prevent the dusty magnesium stearate from being discharged into the air to cause waste and environmental pollution.

[0004] However, it is inconvenient to discharge the material powder after air separation by the above-mentioned air separation device, which is not conducive to multi-stage packaging after magnesium hydroxide is air-separated.

[0005] To this end, a magnesium hydroxide multi-stage air separation device is proposed, which has the advantage of facilitating the export of air-separated materials, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a magnesium hydroxide multi-stage air separation device.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-stage air separation device for magnesium hydroxide, comprising an air separation box, the left side of the top surface of the air separation box is connected to a feed hopper, and the right side of the top surface of the air separation box is fixedly installed with a powder collection box, the inside of the air separation box is stepped from left to right with a first conveyor belt, a second conveyor belt and a third conveyor belt, and two collecting hoppers are arranged between the first conveyor belt, the second conveyor belt and the third conveyor belt, a first blowing hood is arranged on the left side above the first conveyor belt, a second blowing hood is arranged on the left side above the second conveyor belt, and a third blowing hood is arranged on the left side above the third conveyor belt. An air hood, a placement opening is provided on the side wall of the air separation box facing the receiving hopper, and a rectangular telescopic sleeve elastically connected to the receiving hopper is provided on the inner side of the placement opening, one end of the receiving hopper passing through the placement opening is connected to a discharge nozzle, and an inclined plate is welded to the bottom of the inner side of the hopper, a support is welded on the outer wall of the air separation box facing the receiving hopper, and a plurality of springs connected to the bottom of the receiving hopper are provided on the top surface of the support, a vibration motor is fixedly installed on one end of the receiving hopper extending to the inside of the air separation box, a dust suction pipe is connected to the left end of the powder collection box, and a dust suction fan is connected to the right end of the powder collection box, and a filter hood is provided between the powder collection box and the dust suction fan.

[0008] As a further description of the above technical solution: the part of the dust suction pipe extending to the inside of the air separation box is connected to an upper dust suction hood and a lower dust suction hood, the upper dust suction hood is on the surface of the dust suction pipe, the lower dust suction hood is at the bottom end of the dust suction pipe, and the dust suction port of the lower dust suction hood faces the tail end of the third conveyor belt.

[0009] As a further description of the above technical solution: a cleaning port is opened on the surface of the powder collection box, and two L-shaped sleeves are welded around the periphery of the cleaning port, a sealing plate is inserted and fixed between the two L-shaped sleeves, and the sealing plate is in contact with the periphery of the cleaning port.

[0010] As a further description of the above technical solution: the length of the receiving hopper extending into the interior of the air separation box matches the width of the first conveyor belt, the second conveyor belt or the third conveyor belt, and the top surface of one end of the receiving hopper extending into the interior of the air separation box is opened.

[0011] As a further description of the above technical solution: the rectangular telescopic sleeve has a tower-shaped structure in a relaxed state, and the cross-section of the rectangular telescopic sleeve has a wave-shaped structure, and the rectangular telescopic sleeve is made of rubber.

[0012] As a further description of the above technical solution: the bottom surface of the discharge nozzle is a sloped surface, and the top surface of the discharge nozzle is a flat surface.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, two receiving hoppers are arranged at the gaps between the first conveyor belt, the second conveyor belt and the third conveyor belt arranged in a stepped manner. As the blowing hoods blow and winnow the powder in the falling stage, the small particles of the magnesium hydroxide powder are blown into the two receiving hoppers under the action of the horizontal wind direction, and the large particles of the magnesium hydroxide powder are discharged from the winnowing box through the third conveyor belt. At this time, by starting the vibration motor at the bottom of the receiving hopper, since the receiving hopper is elastically connected to the placement port through a rectangular telescopic sleeve, and one end of the receiving hopper is elastically connected to the spring on the support, the vibration motor can drive the receiving hopper to vibrate at a high frequency until the small particles of powder are discharged from the discharge nozzle, so as to achieve the purpose of powder packaging after the magnesium hydroxide winnowing. Compared with the prior art, while meeting the multi-stage winnowing, the graded powder is discharged separately and fully, which provides convenience for the packaging of the magnesium hydroxide after screening.

[0015] In the utility model, by starting the dust suction fan, the dust suction fan is prompted to draw out the air inside the powder collection box under the action of the filter cover, and the filter net built into the filter cover is used to prevent powder from entering the dust suction fan, so that the powder collection box in a negative pressure state forms a dust suction pipeline built into the air separation box with a dust suction pipe, an upper dust suction cover and a lower dust suction cover. The two upper dust suction covers on the surface of the dust suction pipe absorb the magnesium hydroxide powder diffused in the air separation box, and the lower dust suction cover at the bottom of the dust suction pipe is used to absorb the magnesium hydroxide powder diffused outward from the discharge port of the air separation box until the absorbed magnesium hydroxide powder is stored in the powder collection box, so as to achieve the purpose of reducing the air separation loss of magnesium hydroxide while avoiding powder diffusion pollution. In addition, an L-shaped sleeve and a sealing plate are provided at the cleaning port, so that the sealing plate can be quickly disassembled and assembled, which provides convenience for the opening and closing of the cleaning port and is easy to recover the magnesium hydroxide powder in the powder collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a magnesium hydroxide multi-stage air separation device of the utility model;

[0017] Figure 2 This is a sectional view of a collecting hopper of a magnesium hydroxide multi-stage air separation device of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the powder collection box structure of a magnesium hydroxide multi-stage air separation device.

[0019] Legend:

[0020] 1. Air separation box; 2. Feed hopper; 3. First conveyor belt; 4. First blow hood; 5. Second conveyor belt; 6. Second blow hood; 7. Third conveyor belt; 8. Third blow hood; 9. Receiver; 10. Powder collection box; 11. Dust suction fan; 12. Dust suction pipe; 13. Upper dust suction hood; 14. Lower dust suction hood; 15. Placement port; 16. Rectangular telescopic sleeve; 17. Inclined plate; 18. Vibration motor; 19. Support; 20. Spring; 21. Discharge nozzle; 22. Cleaning port; 23. L-shaped sleeve; 24. Sealing plate; 25. Filter cover. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] According to an embodiment of the utility model, a multi-stage air separation device for magnesium hydroxide is provided.

[0023] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3As shown, a magnesium hydroxide multi-stage air separation device according to an embodiment of the utility model comprises an air separation box 1, the left side of the top surface of the air separation box 1 is connected to a feed hopper 2, and a powder collecting box 10 is fixedly installed on the right side of the top surface of the air separation box 1, and the inside of the air separation box 1 is stepped from left to right with a first conveyor belt 3, a second conveyor belt 5 and a third conveyor belt 7, and two receiving hoppers 9 are arranged between the first conveyor belt 3, the second conveyor belt 5 and the third conveyor belt 7, a first blowing hood 4 is arranged on the left side above the first conveyor belt 3, and a second blowing hood 4 is arranged on the left side above the second conveyor belt 5. A second blowing hood 6 is arranged on the side, a third blowing hood 8 is arranged on the left side above the third conveyor belt 7, a placement opening 15 is opened on the side wall of the air separation box 1 facing the receiving hopper 9, and a rectangular telescopic sleeve 16 elastically connected to the receiving hopper 9 is arranged on the inner side of the placement opening 15, and the receiving hopper 9 passes through one end of the placement opening 15 and is connected to a discharge nozzle 21, and an inclined plate 17 is welded to the bottom of the inner side of the receiving hopper 9, a support 19 is welded on the outer wall of the air separation box 1 facing the receiving hopper 9, and a plurality of springs 20 connected to the bottom surface of the receiving hopper 9 are arranged on the top surface of the support 19, and the receiving hopper 9 is connected to the receiving hopper 9. The end of the bucket 9 extending to the interior of the air separation box 1 is fixedly installed with a vibration motor 18, the left end of the powder collection box 10 is connected to a dust suction pipe 12, and the right end of the powder collection box 10 is connected to a dust suction fan 11, and a filter cover 25 is arranged between the powder collection box 10 and the dust suction fan 11. The device is also provided with a blasting device to sequentially pass the airflow into the first blowing cover 4, the second blowing cover 6 and the third blowing cover 8 to achieve the purpose of air separation. For the first conveyor belt 3, the second conveyor belt 5, the third conveyor belt 7 and the dust suction fan 11, the present invention The new control method is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply belong to the common knowledge in this field, and the utility model is mainly used to protect the mechanical device, so the utility model does not explain the control method and wiring arrangement in detail. The installation position of the receiving hopper 9 matches the falling position of the small-particle magnesium hydroxide powder after air selection. In this device, magnesium hydroxide mixed with large particles and small particles is collectively referred to as magnesium hydroxide powder, and magnesium hydroxide containing only small particles or large particles is also referred to as magnesium hydroxide powder;

[0024] In one embodiment, the portion of the dust suction pipe 12 extending to the interior of the air separation box 1 is connected to an upper dust suction cover 13 and a lower dust suction cover 14, the upper dust suction cover 13 is on the surface of the dust suction pipe 12, the lower dust suction cover 14 is at the bottom of the dust suction pipe 12, and the dust suction port of the lower dust suction cover 14 faces the tail end of the third conveyor belt 7. By starting the dust suction fan 11, the dust suction fan 11 is prompted to extract the air inside the powder collection box 10 under the action of the filter cover 25, and the built-in filter screen of the filter cover 25 is used to prevent the powder from entering the dust suction fan 11, so that The powder collection box 10 in a negative pressure state is formed with a dust collection pipe 12, an upper dust collection hood 13 and a lower dust collection hood 14, which are built into the air separation box 1. The two upper dust collection hoods 13 on the surface of the dust collection pipe 12 absorb the magnesium hydroxide powder diffused in the air separation box 1, and the lower dust collection hood 14 at the bottom of the dust collection pipe 12 is used to absorb the magnesium hydroxide powder diffused outward from the discharge port of the air separation box 1 until the absorbed magnesium hydroxide powder is stored in the powder collection box 10, so as to achieve the purpose of reducing the air separation loss of magnesium hydroxide while avoiding powder diffusion pollution.

[0025] In one embodiment, a cleaning port 22 is provided on the surface of the powder collection box 10, and two L-shaped sleeves 23 are welded around the periphery of the cleaning port 22, a sealing plate 24 is inserted and fixed between the two L-shaped sleeves 23, and the sealing plate 24 is fitted with the periphery of the cleaning port 22. When the powder collection box 10 is full, the sealing plate 24 inserted between the two L-shaped sleeves 23 is pulled out to expose the cleaning port 22, thereby facilitating the recovery of the magnesium hydroxide powder in the powder collection box 10.

[0026] In one embodiment, the length of the receiving hopper 9 extending into the interior of the air separation box 1 matches the width of the first conveyor belt 3, the second conveyor belt 5 or the third conveyor belt 7, and an opening is provided on the top surface of one end of the receiving hopper 9 extending into the interior of the air separation box 1, so that the air-selected fine magnesium hydroxide powder can be conveniently collected through the opening of the receiving hopper 9.

[0027] In one embodiment, the rectangular telescopic sleeve 16 has a tower-shaped structure in its relaxed state, and a wavy structure in its cross-section, and the rectangular telescopic sleeve 16 is made of rubber. The arrangement of the rectangular telescopic sleeve 16 is beneficial for adaptive telescopic expansion and contraction according to the shaking of the receiving hopper 9, and also prevents the pollution caused by the outward diffusion of magnesium hydroxide powder. The rectangular telescopic sleeve 16 is made of rubber injection molding, and its relaxed state under the influence of gravity is similar to a pyramid-shaped structure.

[0028] In one embodiment, the bottom surface of the discharge nozzle 21 is a sloped surface, and the top surface of the discharge nozzle 21 is a plane. The setting of the discharge nozzle 21 facilitates the discharge of the magnesium hydroxide powder after air selection, which provides convenience for subsequent packaging.

[0029] Working principle:

[0030] When in use, two receiving hoppers 9 are arranged at the gaps between the first conveyor belt 3, the second conveyor belt 5 and the third conveyor belt 7 which are arranged in a stepped manner. During air selection, the air flow is sequentially introduced into the first blowing hood 4, the second blowing hood 6 and the third blowing hood 8, and then the first conveyor belt 3, the second conveyor belt 5 and the third conveyor belt 7 are started. Then the magnesium hydroxide powder is introduced into the air selection box 1 from the feeding hopper 2. As the blowing hoods blow air to the powder in the falling stage, the small particles of the magnesium hydroxide powder are blown into the two receiving hoppers 9 under the action of the horizontal wind direction, and the large particles of the magnesium hydroxide powder are discharged from the air selection box 1 through the third conveyor belt 7. At this time, by starting the vibration motor 18 at the bottom of the receiving hopper 9, since the receiving hopper 9 is elastically connected to the placement port 15 through the rectangular telescopic sleeve 16, and one end of the receiving hopper 9 is elastically connected to the spring 20 on the support 19, the vibration motor 18 can drive the receiving hopper 9 to perform high-frequency jitter, combined with the built-in inclined The plate 17 is pressed until the small particles of powder are discharged from the discharge nozzle 21. At the same time, the dust suction fan 11 is started to cause the dust suction fan 11 to extract the air inside the powder collection box 10 under the action of the filter cover 25, and the filter net built in the filter cover 25 is used to prevent the powder from entering the dust suction fan 11, so that the powder collection box 10 in a negative pressure state forms a dust suction pipe 12 built in the air separation box 1 with the dust suction pipe 12, the upper dust suction cover 13 and the lower dust suction cover 14. The dust suction pipe 12 is formed in the air separation box 1. The two upper dust hoods 13 on the surface absorb the magnesium hydroxide powder diffused in the air separation box 1, and the lower dust hood 14 at the bottom end of the dust suction pipe 12 is used to absorb the magnesium hydroxide powder diffused outward from the discharge port of the air separation box 1 until the absorbed magnesium hydroxide powder is stored in the powder collection box 10. When the powder collection box 10 is full, the sealing plate 24 inserted between the two L-shaped sleeves 23 is pulled out to expose the cleaning port 22, so as to facilitate the recovery of the magnesium hydroxide powder in the powder collection box 10.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnesium hydroxide multi-stage air separation device, comprising an air separation box (1), characterized in that: The left side of the top surface of the air separation box (1) is connected to a feed hopper (2), and the right side of the top surface of the air separation box (1) is fixedly installed with a powder collection box (10). The inside of the air separation box (1) is provided with a first conveyor belt (3), a second conveyor belt (5) and a third conveyor belt (7) in a stepped manner from left to right, and two receiving hoppers (9) are provided between the first conveyor belt (3), the second conveyor belt (5) and the third conveyor belt (7). A first blowing hood (4) is provided on the left side above the first conveyor belt (3), a second blowing hood (6) is provided on the left side above the second conveyor belt (5), and a third blowing hood (8) is provided on the left side above the third conveyor belt (7). A placement opening (15) is provided on the side wall of the air separation box (1) facing the receiving hopper (9), and a spacer (15) is provided in the placement opening (15). A rectangular telescopic sleeve (16) elastically connected to the material receiving hopper (9) is arranged on the side, one end of the material receiving hopper (9) passing through the placement port (15) is connected to a discharge nozzle (21), and an inclined plate (17) is welded to the inner bottom of the material receiving hopper (9), a support (19) is welded to the outer wall of the air separation box (1) facing the material receiving hopper (9), and a plurality of springs (20) connected to the bottom surface of the material receiving hopper (9) are arranged on the top surface of the support (19), a vibration motor (18) is fixedly installed on one end of the material receiving hopper (9) extending to the interior of the air separation box (1), a dust suction pipe (12) is connected to the left end of the powder collection box (10), and a dust suction fan (11) is connected to the right end of the powder collection box (10), and a filter cover (25) is arranged between the powder collection box (10) and the dust suction fan (11).

2. A magnesium hydroxide multi-stage air separation device according to claim 1, characterized in that: The portion of the dust suction pipe (12) extending to the interior of the air separation box (1) is connected to an upper dust suction hood (13) and a lower dust suction hood (14); the upper dust suction hood (13) is located on the surface of the dust suction pipe (12), the lower dust suction hood (14) is located at the bottom end of the dust suction pipe (12), and the dust suction port of the lower dust suction hood (14) faces the rear end of the third conveyor belt (7).

3. A magnesium hydroxide multi-stage air separation device according to claim 1, characterized in that: The surface of the powder collection box (10) is provided with a cleaning port (22), and two L-shaped sleeves (23) are welded around the cleaning port (22), a sealing plate (24) is inserted and fixed between the two L-shaped sleeves (23), and the sealing plate (24) fits the periphery of the cleaning port (22).

4. A magnesium hydroxide multi-stage air separation device according to claim 1, characterized in that: The length of the receiving hopper (9) extending into the interior of the air separation box (1) matches the width of the first conveyor belt (3), the second conveyor belt (5) or the third conveyor belt (7), and an opening is provided on the top surface of one end of the receiving hopper (9) extending into the interior of the air separation box (1).

5. A magnesium hydroxide multi-stage air separation device according to claim 1, characterized in that: The rectangular telescopic sleeve (16) has a tower-shaped structure in a relaxed state, and the cross-section of the rectangular telescopic sleeve (16) has a wave-shaped structure, and the rectangular telescopic sleeve (16) is made of rubber.

6. A magnesium hydroxide multi-stage air separation device according to claim 1, characterized in that: The bottom surface of the discharge nozzle (21) is a sloped surface, and the top surface of the discharge nozzle (21) is a flat surface.

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