Nitrogen making device for silicon-manganese alloy smelting

Abstract

The utility model discloses a nitrogen making device for silicon-manganese alloy smelting. The nitrogen making device comprises a flow dividing pipe, a first flow dividing box, a second flow dividing box, a third flow dividing box and a gas inlet pipe. According to the nitrogen making device for silicon-manganese alloy smelting, a concentric-square-shaped supporting plate is provided with an inert ceramic ball layer and a carbon molecular sieve layer, the inert ceramic ball layer is arranged in a gradient magnetic field, the bottom of an adsorption tank is evenly and fixedly connected with flow dividing pipes in a penetrating mode, and the bottom ends of the four adjacent flow dividing pipes are jointly and fixedly connected with a first flow dividing box communicating with the four flow dividing pipes; the bottoms of the four adjacent first flow dividing boxes are jointly and fixedly connected with second flow dividing boxes communicating with the four first flow dividing boxes, the bottoms of the second flow dividing boxes are jointly and fixedly connected with third flow dividing boxes communicating with the second flow dividing boxes, and the bottoms of the third flow dividing boxes are fixedly connected with air inlet pipes communicating with the third flow dividing boxes. The shunt pipes are uniformly distributed at the bottom of the adsorption tank to form a uniform air outlet effect, so that an array type uniform air outlet effect can be formed at the bottom of the adsorption tank through the single air inlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen production, in particular to a nitrogen production device for smelting silicon-manganese alloy. Background Art

[0002] During the smelting of silicon-manganese alloy, the temperature needs to be raised to a very high level; however, under high temperature conditions, silicon-manganese alloy is prone to oxidation, which will affect the quality of silicon-manganese alloy smelting and reduce the performance of the workpiece surface. The solution is to use inert gas nitrogen to form a protective atmosphere to isolate the metal from the air, or more accurately, to isolate the silicon-manganese alloy from oxygen, to prevent oxidation.

[0003] There are many ways to obtain nitrogen. For example, directly purchasing bottled nitrogen for use is indeed a very good method when using nitrogen in a short-term and small amount. However, if nitrogen is needed for a long-term and continuous period, it will involve a series of problems such as the purchase, transportation, management, and handling of bottled nitrogen. After comprehensive calculation, the cost of using nitrogen will increase. Therefore, nitrogen production equipment is needed for metal smelting.

[0004] In the prior art with the publication (announcement) number: CN219670150U, a PSA nitrogen production device is disclosed, including an adsorption tank, in which an inert ceramic ball layer and a carbon molecular sieve layer are installed from bottom to top in the inner cavity of the adsorption tank, respectively, wherein the inert ceramic ball layer is arranged in a gradient magnetic field, and four L-shaped air intake pipes are fixedly connected to the bottom of the adsorption tank, wherein the four air intake pipes are distributed in a circular array along the vertical axis of the adsorption tank, and four diversion inner seats are fixedly welded to the bottom wall of the inner cavity of the adsorption tank, and the four diversion inner seats are each formed with an air filling groove, and the four air intake pipes are connected to the four air filling grooves, and a plurality of epitaxial tubes distributed in a circular array are welded above each of the diversion inner seats, and legs are welded to the four corners of the bottom wall of the adsorption tank. The PSA nitrogen production device allows the inert ceramic ball layers in various places in the adsorption tank to work simultaneously and quickly separate oxygen and nitrogen, thereby facilitating the improvement of nitrogen production efficiency.

[0005] However, in the above-mentioned prior art, the diverter seat is arranged circumferentially, and the epitaxial tube is set circumferentially on the diverter seat, resulting in poor uniformity in the setting of the outlet point during air intake. At the same time, each diverter seat needs to be connected to an air intake pipe separately and needs to be connected to multiple external pipes. Therefore, a nitrogen production device for silicon-manganese alloy smelting is proposed to optimize the above-mentioned prior art. Utility Model Content

[0006] The purpose of the utility model is to provide a nitrogen production device for smelting silicon-manganese alloy to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A nitrogen production device for smelting silicon-manganese alloy comprises an adsorption tank, wherein the four corners of the bottom of the adsorption tank are fixedly connected with supporting legs, the bottom of the adsorption tank is raised by setting the supporting legs to avoid the intake pipe from being squeezed and damaged, a nitrogen exhaust pipe is arranged on the top of the adsorption tank, two round-shaped supporting plates are fixedly connected in parallel inside the adsorption tank, an inert ceramic ball layer and a carbon molecular sieve layer are respectively arranged on the round-shaped supporting plates, the inert ceramic ball layers are arranged in a gradient magnetic field, a shunt pipe is evenly penetrated and fixedly connected to the bottom of the adsorption tank, a first shunt box connected to the four shunt pipes is fixedly connected to the bottom ends of four adjacent shunt pipes, a second shunt box connected to the four first shunt boxes is fixedly connected to the bottom ends of four adjacent first shunt boxes, a third shunt box connected to the second shunt box is fixedly connected to the bottom ends of the second shunt boxes, an intake pipe connected thereto is fixedly connected to the bottom of the third shunt box, and a first cross partition is fixedly connected between the corresponding four shunt pipes in the first shunt box. Plate, the air inlet of the first diversion box is divided into four petals by the first cross partition, and the first diversion box is divided into four chambers corresponding to the diversion pipe by the first cross partition, thereby forming an air intake diversion effect; the second diversion box is fixedly connected with the second cross partition between the four corresponding first diversion boxes, the air inlet of the second diversion box is divided into four petals by the second cross partition, and the second diversion box is divided into four chambers corresponding to the first diversion box by the second cross partition, thereby forming an air intake diversion effect; the third diversion box is fixedly connected with the third cross partition between the four corresponding second diversion boxes, and the third diversion box is divided into four chambers corresponding to the second diversion box by the third cross partition, thereby forming an air intake diversion effect; the intake pipe is fixedly connected with a forty cross partition, and the intake pipe is divided into four areas by the fourth cross partition, thereby forming an intake diversion, the forty cross partition corresponds to the third cross partition, and the intake pipe is connected to the external air supply assembly through a pipeline.

[0009] As a further solution of the utility model: the adsorption tank is provided with an inspection port above the corresponding circular support plate, and a matching inspection door is provided on the outside of the inspection port, and a sealing ring corresponding to the inspection door is fixedly connected to the edge of the inspection port.

[0010] As a further solution of the utility model: one side of the inspection door is hinged to the adsorption tank by a hinge, and the other side of the inspection door is fixed to the adsorption tank by bolts, the inspection door is provided with a through hole for the bolt to pass through, and the adsorption tank is provided with a threaded hole for the bolt threaded connection.

[0011] As a further solution of the utility model: the outer sides of the inert porcelain ball layer and the carbon molecular sieve layer are fixedly connected with vertical sleeves, and the two sides of the vertical sleeves corresponding to the circular support plate are symmetrically fixedly connected with limiting strips so that the vertical sleeves and the fiber strips can fit together.

[0012] As a further solution of the utility model: both sides of the vertical sleeve are fixedly connected with inclined guide bars, a roller frame is provided below the guide bars, the guide bars can slide on the rollers of the roller frame, the roller frame is fixedly connected to the inner wall of the adsorption tank, and a pressure strip is provided above the guide bars to slide in contact with the pressure strip, and the pressure strip is fixedly connected to the inner wall of the adsorption tank.

[0013] As a further solution of the utility model: the end of the pressure strip is provided with a folded edge, and an insertion opening is formed between the folded edge and the roller frame, so as to facilitate the insertion of the guide bar. The pressure strip is threadedly connected with a hand-tightened threaded handle, and the hand-tightened threaded handle is against the guide bar. The pressure strip is provided with a threaded hole for threaded connection of the hand-tightened threaded handle, and a handle is fixedly connected to the front side of the vertical sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model sets a single air inlet pipe, separates and diverts the gas through the fourth cross partition, cooperates with the third diversion box and the third cross partition to guide the diverted gas into the second diversion box, and the gas entering the second diversion box is further diverted to the first diversion box with the cooperation of the second cross partition. At this time, the gas is evenly diverted into the diversion pipe with the cooperation of the first cross partition, and the diversion pipe is evenly arranged at the bottom of the adsorption tank to form a uniform gas outlet effect, so that an array-type uniform gas outlet effect can be formed at the bottom of the adsorption tank through a single air inlet pipe.

[0016] 2. The utility model can take out and maintain the inert ceramic ball layer and the carbon molecular sieve layer by opening and closing the inspection door. The inert ceramic ball layer and the carbon molecular sieve layer can be limited left and right by the vertical sleeve and the limit bar. At the same time, the inclined guide bar cooperates with the corresponding roller frame and the left and right bottom of the pressure bar to automatically slide down into the corresponding placement position, and is locked with the hand-tightened threaded handle, which is convenient for the placement, positioning and fixation of the inert ceramic ball layer and the carbon molecular sieve layer. At the same time, the hand-tightened threaded handle can be directly loosened, and the inert ceramic ball layer and the carbon molecular sieve layer can be directly and easily pulled out by pulling the handle, so that the inert ceramic ball layer and the carbon molecular sieve layer can be conveniently placed in the adsorption tank for positioning, and can be easily taken out for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the structure of a nitrogen production device for smelting silicon-manganese alloy.

[0018] Figure 2 It is a transverse cross-sectional view of a nitrogen production device for smelting silicon-manganese alloy.

[0019] Figure 3 It is a longitudinal cross-sectional view of a nitrogen production device for smelting silicon-manganese alloy.

[0020] Figure 4This is a three-dimensional display of the partial structure of a nitrogen production device for smelting silicon-manganese alloy.

[0021] Figure 5 A partial structural explosion of a nitrogen production device for silicon-manganese alloy smelting

[0022] In the figure: 1. adsorption tank; 2. support leg; 3. nitrogen exhaust pipe; 4. circular support plate; 5. inert porcelain ball layer; 6. diverter pipe; 7. first diverter box; 8. second diverter box; 9. third diverter box; 10. first cross partition; 11. second cross partition; 12. third cross partition; 13. fourth cross partition; 14. inspection door; 15. sealing ring; 16. carbon molecular sieve layer; 17. vertical sleeve; 18. limit strip; 19. guide strip; 20. roller frame; 21. pressure strip; 22. hand-tightened threaded handle; 23. handle; 24. air inlet pipe. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1 to 5In an embodiment of the utility model, a nitrogen production device for smelting silicon-manganese alloy comprises an adsorption tank 1, the four corners of the bottom of the adsorption tank 1 are fixedly connected with supporting legs 2, the top of the adsorption tank 1 is provided with a nitrogen exhaust pipe 3, the interior of the adsorption tank 1 is fixedly connected with two circular support plates 4 in parallel, the circular support plates 4 are respectively provided with an inert ceramic ball layer 5 and a carbon molecular sieve layer 16, the inert ceramic ball layer 5 is arranged in a gradient magnetic field, the bottom of the adsorption tank 1 is uniformly penetrated and fixedly connected with a shunt pipe 6, the bottom ends of the four adjacent shunt pipes 6 are commonly fixedly connected with a first shunt box 7 connected with the four shunt pipes 6, the bottoms of the four adjacent first shunt boxes 7 are commonly fixedly connected with a second shunt box 8 connected with the four first shunt boxes 7, the bottoms of the second shunt boxes 8 are commonly fixedly connected with a third shunt box 9 connected with the second shunt box 8, the bottom of the third shunt box 9 is fixedly connected with an air inlet pipe 24 connected thereto, a first cross partition plate 10 is fixedly connected between the corresponding four shunt pipes 6 in the first shunt box 7, and the air inlet hole of the first shunt box 7 is The first cross partition 10 is divided into four petals, and the first diverter box 7 is divided into four chambers corresponding to the diverter tube 6 by the first cross partition 10, thereby forming an air intake diversion effect. The second diverter box 8 is fixedly connected with the second cross partition 11 between the four first diverter boxes 7 corresponding to the second diverter box 7, and the air intake hole of the second diverter box 8 is divided into four petals by the second cross partition 11. At the same time, the second diverter box 8 is divided into four chambers corresponding to the first diverter box 7 by the second cross partition 11, thereby forming an air intake diversion effect. A third cross partition 12 is fixedly connected between the four second diversion boxes 8 corresponding to the flow box 9, and the third diversion box 9 is divided into four chambers corresponding to the second diversion boxes 8 by the third cross partition 12, forming an air intake diversion effect. A fortieth cross partition 13 is fixedly connected to the air intake pipe 24, and the air intake pipe 24 is divided into four areas by the fourth cross partition 13, thereby forming an air intake diversion. The fourth cross partition 13 corresponds to the third cross partition 12, and the air intake pipe 24 is connected to the external air supply component through a pipeline.

[0025] A single air inlet pipe 24 is provided, which is separated and diverted by the fourth cross partition 14, and the diverted gas is guided into the second diverter box 8 in cooperation with the third diverter box 9 and the third cross partition 13. The gas entering the second diverter box 8 is further diverted to the first diverter box 7 with the cooperation of the second cross partition 11. At this time, the gas is evenly diverted into the diverter pipe 6 with the cooperation of the first cross partition 10. The diverter pipe 6 is evenly arranged at the bottom of the adsorption tank 1, forming a uniform gas outlet effect.

[0026] An inspection port is provided above the adsorption tank 1 corresponding to the circular support plate 4 , and an inspection door 14 matching with the inspection port is provided on the outside of the inspection port, and a sealing ring 15 corresponding to the inspection door 14 is fixedly connected to the edge of the inspection port.

[0027] One side of the inspection door 14 is hinged to the adsorption tank 1 by a hinge, and the other side of the inspection door 14 is fixed to the adsorption tank 1 by bolts. The inspection door 14 is provided with a through hole for the bolt to pass through, and the adsorption tank 1 is provided with a threaded hole for the bolt threaded connection.

[0028] The outer sides of the inert ceramic ball layer 5 and the carbon molecular sieve layer 16 are fixedly connected with vertical sleeves 17 , and the two sides of the vertical sleeves 17 corresponding to the circular support plate 4 are symmetrically fixedly connected with limiting strips 18 , and the vertical sleeves 17 and the fiber strips 18 fit and move.

[0029] Both sides of the vertical sleeve 17 are fixedly connected with inclined guide bars 19, and a roller frame 20 is provided below the guide bar 19. The guide bar 19 can slide on the rollers of the roller frame 20, so that the inert ceramic ball layer 5 and the carbon molecular sieve layer 16 can be lifted up when the inert ceramic ball layer 5 and the carbon molecular sieve layer 16 are pulled out to avoid friction with the circular support plate 4, thereby making the pulling operation easier. The roller frame 20 is fixedly connected to the inner wall of the adsorption tank 1, and a pressure strip 21 that fits and slides with the guide bar 19 is provided above the guide bar 19, and the pressure strip 21 is fixedly connected to the inner wall of the adsorption tank 1.

[0030] The end of the pressure strip 21 is provided with a folded edge, and an insertion opening is formed between the folded edge and the roller frame 20, so as to facilitate the insertion of the guide bar 19. The pressure strip 21 is threadedly connected with a hand-tightened threaded handle 22, and the hand-tightened threaded handle 22 is against the guide bar 19. The pressure strip 21 is provided with a threaded hole for the threaded connection of the hand-tightened threaded handle 22, and a handle 23 is fixedly connected to the front side of the vertical sleeve 17.

[0031] By opening and closing the inspection door 14, the inert ceramic ball layer 5 and the carbon molecular sieve layer 16 can be taken out for maintenance. The inert ceramic ball layer 5 and the carbon molecular sieve layer 16 can be limited on the left and right by the vertical sleeve 17 and the limit bar 18. At the same time, the inclined guide bar 1 cooperates with the corresponding roller frame 20 and the pressure bar 21 to automatically slide down into the corresponding placement position, and is locked with the hand-tightened threaded handle 22, so as to facilitate the placement, positioning and fixation of the inert ceramic ball layer 5 and the carbon molecular sieve layer 16. At the same time, the hand-tightened threaded handle 22 can be directly loosened, and the inert ceramic ball layer 5 and the carbon molecular sieve layer 16 can be directly and easily pulled out by pulling the handle 23.

[0032] The working principle of the utility model is:

[0033] When in use, open the inspection door 14, put the inert porcelain ball layer 5 and the carbon molecular sieve layer 16 into the adsorption tank 1, and the vertical sleeve 17 corresponds to the limit bar 18 when putting them in, and the guide bar 19 is inserted into the corresponding roller frame 20 and the pressure bar 21. Under the left and right of gravity, the vertical sleeve 17 falls on the circular support 4. At this time, the threaded handle 22 is tightened by hand, and the inspection door 14 is closed and fixed with bolts.

[0034] Air is taken in through the air inlet pipe 24, and is diverted through the third diverter box 9, the second diverter box 8, and the first diverter box 7, so that the gas enters the adsorption tank 1 evenly through the diverter pipe 6. Under the action of the inert porcelain ball layer 5 and the gradient magnetic field, oxygen and nitrogen produce a speed difference and are separated under the action of the gradient magnetic field. Oxygen and nitrogen are separated and float up. Oxygen will be adsorbed by the carbon molecular sieve layer 16, occupying the adsorption sites in the carbon molecular sieve, so that the carbon molecular sieve reaches adsorption equilibrium, and the nitrogen that is not adsorbed continues to float up and is discharged from the nitrogen exhaust pipe 3, thereby achieving the separation of nitrogen and oxygen.

[0035] When the inert ceramic ball layer 5 and the carbon molecular sieve layer 16 need to be maintained, the inspection door 14 is opened, the hand-tightened threaded handle 22 is loosened, and the vertical sleeve 17 is directly pulled by the handle 23, so that the guide bar 19 eye roller frame 20 slides upward and is easily pulled out.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A nitrogen production device for silicon-manganese alloy smelting, comprising an adsorption tank (1), characterized in that: The four corners of the bottom of the adsorption tank (1) are fixedly connected to supporting legs (2), the top of the adsorption tank (1) is provided with a nitrogen exhaust pipe (3), the interior of the adsorption tank (1) is fixedly connected with two circular support plates (4) in parallel, the circular support plates (4) are respectively provided with an inert ceramic ball layer (5) and a carbon molecular sieve layer (16), the inert ceramic ball layer (5) is arranged in a gradient magnetic field, the bottom of the adsorption tank (1) is evenly penetrated and fixedly connected with a shunt pipe (6), the bottom ends of four adjacent shunt pipes (6) are fixedly connected with a first shunt box (7) in communication with the four shunt pipes (6), the bottom ends of four adjacent first shunt boxes (7) are fixedly connected with a second shunt box (8) in communication with the four first shunt boxes (7), and the second shunt box (8) is fixedly connected with a second shunt box (8) in communication with the four first shunt boxes (7). A third flow diversion box (9) communicating with the second flow diversion box (8) is fixedly connected at the bottom, an air intake pipe (24) communicating with the third flow diversion box (9) is fixedly connected at the bottom, a first cross partition (10) is fixedly connected between the four corresponding flow diversion pipes (6) in the first flow diversion box (7), a second cross partition (11) is fixedly connected between the four corresponding first flow diversion boxes (7) in the second flow diversion box (8), a third cross partition (12) is fixedly connected between the four corresponding second flow diversion boxes (8) in the third flow diversion box (9), a fourth cross partition (13) is fixedly connected in the air intake pipe (24), the fourth cross partition (13) corresponds to the third cross partition (12), and the air intake pipe (24) is connected to an external air supply component through a pipeline.

2. A nitrogen production device for silicon-manganese alloy smelting according to claim 1, characterized in that: The adsorption tank (1) is provided with an inspection opening above the corresponding circular support plate (4), and an inspection door (14) matching the inspection opening is provided on the outside of the inspection opening, and a sealing ring (15) corresponding to the inspection door (14) is fixedly connected to the edge of the inspection opening.

3. A nitrogen production device for silicon-manganese alloy smelting according to claim 2, characterized in that: One side of the inspection door (14) is hinged to the adsorption tank (1) via a hinge, and the other side of the inspection door (14) is fixedly mounted to the adsorption tank (1) via bolts.

4. The nitrogen production device for silicon-manganese alloy smelting according to claim 1 is characterized in that: The outer sides of the inert porcelain ball layer (5) and the carbon molecular sieve layer (16) are both fixedly connected with a vertical sleeve (17), and the circular support plate (4) is symmetrically fixedly connected with a limit strip (18) on both sides corresponding to the vertical sleeve (17).

5. A nitrogen production device for silicon-manganese alloy smelting according to claim 4, characterized in that: Both sides of the vertical sleeve (17) are fixedly connected with inclined guide bars (19), a roller frame (20) is provided below the guide bar (19), the roller frame (20) is fixedly connected to the inner wall of the adsorption tank (1), and a pressure strip (21) is provided above the guide bar (19) to slide in contact with the guide bar (19), and the pressure strip (21) is fixedly connected to the inner wall of the adsorption tank (1).

6. A nitrogen production device for silicon-manganese alloy smelting according to claim 5, characterized in that: The end of the pressure strip (21) is provided with a folded edge, and a hand-tightened threaded handle (22) is threadedly connected to the pressure strip (21), and the hand-tightened threaded handle (22) is against the guide bar (19), and a handle (23) is fixedly connected to the front side of the vertical sleeve (17).

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