Drying machine for powder metallurgy

Abstract

The utility model discloses a kind of powder metallurgy drying machines, it is related to the technical field of powder metallurgy, including shell;Rotary pipe, rotary and penetrate the side wall of the shell;Shaft, one end is rotatably connected with the inner side wall surface of the shell, the other end penetrates the rotary pipe;Rotary plate, number is a pair, all be located in the shell, and respectively fixedly installed on the outer surface of the rotary pipe and the shaft;Turnover stirring rod, several, and respectively fixedly installed on the end face of a pair of the rotary plate mutually close in staggered state;Turnover stirring plate, number is a pair, respectively fixedly installed on the end face of a pair of the rotary plate mutually close, and all with the inner wall surface of the shell contact, by a pair of reverse rotary rotary plate and staggered turnover stirring rod, form strong shear force, thoroughly scatter powder body aggregation, cooperate with the turnover stirring plate that inner wall is closely contacted, real-time scrape wall surface adhering material, effectively solve the problem of powder cake agglomeration in background art, significantly improve the rate of raw powder into material.

Description

Technical Field

[0001] This utility model relates to the technical field of powder metallurgy, specifically a dryer for powder metallurgy. Background Technology

[0002] Powder metallurgy is a process technology that produces metal powders or uses metal powders (or mixtures of metal powders and non-metal powders) as raw materials, and manufactures metal materials, composite materials and various types of products through forming and sintering.

[0003] Most existing powder drying machines have relatively simple internal structures, which leads to powder cake clumping during the drying process of metal powder, resulting in a low yield of raw powder. Utility Model Content

[0004] To solve the above problems, namely the problems mentioned in the background art, this utility model proposes a dryer for powder metallurgy, comprising:

[0005] case;

[0006] A heating cavity is formed within the side wall of the housing;

[0007] An electric heater is disposed inside the heating chamber;

[0008] The rotating tube rotates through one side wall of the housing;

[0009] The rotating shaft has one end rotatably connected to the inner wall of the housing, and the other end passes through the rotating tube;

[0010] There is a pair of rotating plates, each located inside the housing, and fixedly mounted on the outer surfaces of the rotating tube and the rotating shaft, respectively.

[0011] Several stirring rods are fixedly installed in an alternating manner on the end faces of a pair of rotating plates that are close to each other;

[0012] The mixing plates are in pairs and are fixedly installed on the end faces of the pair of rotating plates that are close to each other, and both are in contact with the inner wall surface of the shell.

[0013] A drive mechanism is provided on the outer wall of the housing and is used to drive the rotating tube and the rotating shaft to rotate.

[0014] Preferably, the drive mechanism includes;

[0015] A drive motor is fixedly mounted on one side wall of the housing;

[0016] A pair of driven bevel gears are fixedly installed on the outer surface of the rotating tube and one end of the rotating shaft, respectively.

[0017] The driving bevel gear is fixedly mounted on the output end of the drive motor and simultaneously meshes with a pair of driven bevel gears;

[0018] An exhaust mechanism, located on the housing, is used to exhaust gas from inside the housing.

[0019] Preferably, the exhaust mechanism includes;

[0020] An exhaust fan is fixedly installed on one side wall of the housing;

[0021] A connecting pipe is located above the housing, with one end connected to the air inlet of the range hood and the other end sealed.

[0022] The intake pipe has one end fixedly connected to the connecting pipe and the other end connected to the housing;

[0023] An annular pipe is installed at the air outlet of the exhaust fan;

[0024] The filter screen is fixedly installed inside the annular tube;

[0025] The filter cotton is disposed inside the annular tube and located on the filter screen.

[0026] Preferably, an L-shaped frame is provided at the bottom of the housing, and a rotating rod is fixedly installed on one side wall of the housing. The rotating rod rotatably passes through the side wall of the L-shaped frame and is fixedly installed with a rotating disk.

[0027] A support block is fixedly installed on the L-shaped frame, and an arc-shaped shell is fixedly installed on the upper end face of the support block. Several bearing rollers are provided inside the arc-shaped shell, and the outer surface of the bearing rollers is in contact with the outer wall surface of the shell.

[0028] Preferably, a limiting rod is slidably installed on one side wall of the L-shaped frame, and a limiting groove is formed on the rotating disk to cooperate with the limiting rod.

[0029] The beneficial technical effects of this utility model are as follows:

[0030] 1. Highly efficient anti-caking and uniform drying:

[0031] A pair of counter-rotating plates and staggered stirring rods generate strong shearing force to completely break up powder agglomerates. Combined with the stirring plates that are in close contact with the inner wall, the material adhering to the wall surface is scraped off in real time, effectively solving the problem of powder cake clumping in the background technology and significantly improving the yield of raw powder.

[0032] 2. Dual-axis synchronous drive for energy saving and consumption reduction:

[0033] The drive mechanism uses a single motor in conjunction with a driving bevel gear that synchronously meshes with two driven bevel gears to achieve the linkage and reverse rotation of the rotating tube and the rotating shaft. It has a compact structure, high transmission efficiency, and reduces energy consumption while ensuring stirring stability.

[0034] 3. Waste gas filtration and raw material recovery:

[0035] The exhaust system uses a fan to force dehumidification, combined with a two-stage filtration system of an internal filter screen and filter cotton to efficiently capture fine powder in the exhaust gas, reducing raw material loss and meeting environmental protection requirements. Attached Figure Description

[0036] Figure 1 A schematic diagram of the front view structure of this utility model is shown.

[0037] Figure 2 A schematic diagram of the front cross-sectional structure of this utility model is shown.

[0038] Figure 3 A side view of the L-shaped frame of this utility model is shown.

[0039] Figure 4 A side sectional view of the arc-shaped shell of this utility model is shown.

[0040] Figure 5 The diagram shows a front sectional view of the annular tube of this invention.

[0041] The attached diagram shows the following components: 1. Shell, 2. Heating chamber, 3. Electric heater, 4. Rotating tube, 5. Rotating shaft, 6. Rotating plate, 7. Tilting rod, 8. Tilting plate, 9. Drive motor, 10. Driven bevel gear, 11. Driving bevel gear, 12. Exhaust fan, 13. Connecting pipe, 14. Air inlet pipe, 15. Annular pipe, 16. Filter screen, 17. Filter cotton, 18. L-shaped frame, 19. Rotating rod, 20. Rotating disk, 21. Support block, 22. Arc-shaped shell, 23. Bearing roller, 24. Limiting rod, 25. Limiting groove. Detailed Implementation

[0042] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0043] This utility model proposes a dryer for powder metallurgy, comprising:

[0044] Casing 1;

[0045] Heating chamber 2 is formed inside the side wall of housing 1;

[0046] Electric heater 3 is installed inside heating chamber 2;

[0047] Rotate tube 4, which penetrates one side wall of housing 1;

[0048] The rotating shaft 5 is rotatably connected at one end to the inner wall of the housing 1, and the other end passes through the rotating tube 4;

[0049] There is a pair of rotating plates 6, both located inside the housing 1, and fixedly mounted on the outer surfaces of the rotating tube 4 and the rotating shaft 5 respectively;

[0050] Several stirring rods 7 are fixedly installed on the close-to-each end faces of a pair of rotating plates 6 in an alternating manner.

[0051] The mixing plates 8 are in pairs and are fixedly installed on the end faces of a pair of rotating plates 6 that are close to each other, and both are in contact with the inner wall surface of the shell 1.

[0052] The drive mechanism is located on the outer wall of the housing 1 and is used to drive the rotating tube 4 and the rotating shaft 5 to rotate.

[0053] An opening is formed in the outer wall of the housing 1, which allows metal powder to be added into the housing 1 or poured out of the housing 1. At the same time, a sealing plate is hinged to the outer wall of the housing 1 to seal the opening, making the inside of the housing 1 a sealed space to prevent the metal powder from flowing out of the opening. A fixing locking rod is fixedly installed on one end of the sealing plate, and an L-shaped locking rod is rotatably installed on the outer wall of the housing 1. The L-shaped locking rod can rotate to contact the fixing locking rod and lock the position of the fixing locking rod, so that the sealing plate always seals the opening.

[0054] The heating cavity 2 is formed inside the side wall of the shell 1, forming a surrounding heat conduction channel;

[0055] The electric heater 3 is fixedly installed inside the heating chamber 2 and radiates heat into the housing through the side wall. The electric heater 3 is electrically connected to an external power supply device, which can supply power to the electric heater 3 to make it heat up.

[0056] The rotating tube 4 horizontally penetrates one side wall of the housing 1, and achieves rotational sealing through a bearing;

[0057] One end of the rotating shaft 5 is rotatably connected to the inner wall of the housing 1 via a bearing, and the other end coaxially passes through the inside of the rotating tube 4, forming a nested double-shaft structure.

[0058] There is a pair of rotating plates 6, which are rigidly fixed to the outer surface of the rotating tube 4 and the outer surface of the rotating shaft 5, respectively. The two plates are arranged in parallel in the internal space of the housing 1. At the same time, when the staff adds metal powder into the housing 1 through the opening, the metal powder in the housing 1 is located between the pair of rotating plates 6.

[0059] Multiple sets of stirring rods 7 are arranged in an alternating pattern and are welded vertically to the adjacent end faces of a pair of rotating plates 6. When the pair of rotating plates 6 rotate in opposite directions, the stirring rods 7 can generate shearing force to break up the powder clumps.

[0060] There is a pair of stirring plates 8, which are fixed to the adjacent end faces of the two rotating plates 6 respectively. The outer edge of the plate is in sliding contact with the inner wall of the shell 1 to achieve real-time wall scraping.

[0061] The drive mechanism can synchronously drive the rotating tube 4 and the rotating shaft 5 to rotate in opposite directions.

[0062] Specifically, the drive mechanism includes;

[0063] The drive motor 9 is fixedly installed on one side wall of the housing 1;

[0064] Driven bevel gears 10, in pairs, are fixedly mounted on the outer surface of the rotating tube 4 and one end of the rotating shaft 5, respectively;

[0065] The driving bevel gear 11 is fixedly mounted on the output end of the drive motor 9 and simultaneously meshes with a pair of driven bevel gears 10.

[0066] An exhaust mechanism, located on housing 1, is used to exhaust gas from inside housing 1;

[0067] The drive motor 9 is fixedly installed on the outer wall of the housing 1 and can be fixed relative to the housing 1;

[0068] The active bevel gear 11 is rigidly fixed to the end of the output shaft of the drive motor 9;

[0069] The number of driven bevel gears 10 is a pair. One driven bevel gear 10 is fixedly fitted on the outer surface of the rotating tube 4, and the other driven bevel gear 10 is fixedly installed on the shaft end of the rotating shaft 5 that extends out of the housing 1. The driving bevel gear 11 meshes perpendicularly with the two driven bevel gears 10 at the same time, forming a synchronous transmission structure of "one driving two".

[0070] The drive motor 9 can drive the active bevel gear 11 to rotate. The active bevel gear 11 simultaneously meshes with the driven bevel gear 10 of the rotating tube 4 and the driven bevel gear 10 of the rotating shaft 5. At this time, the rotation of a pair of driven bevel gears 10 can drive the rotating tube 4 and the rotating shaft 5 to rotate in opposite directions. The rotation of the rotating tube 4 and the rotating shaft 5 can drive a pair of rotating plates 6 to move in opposite directions. The rotation of a pair of rotating plates 6 can drive several stirring rods 7 and a pair of stirring plates 8 to work.

[0071] Specifically, the exhaust system includes;

[0072] The exhaust fan 12 is fixedly installed on one side wall of the housing 1;

[0073] The connecting pipe 13 is located above the housing 1, with one end connected to the air inlet of the smoke extractor 12 and the other end sealed.

[0074] The intake pipe 14 is fixedly connected to the connecting pipe 13 at one end and connected to the housing 1 at the other end;

[0075] An annular pipe 15 is installed at the air outlet of the exhaust fan 12;

[0076] Filter screen 16 is fixedly installed inside the annular tube 15;

[0077] Filter cotton 17 is placed inside the annular tube 15 and located on the filter screen 16;

[0078] The exhaust fan 12 is fixed to the outer wall of the housing 1 and can be fixed relative to the housing 1.

[0079] The connecting pipe 13 is horizontally arranged above the housing 1, with one end sealed to form a closed end, and the other end connected to the air inlet of the exhaust fan 12;

[0080] The number of intake pipes 14 is at least one, with the upper end fixedly connected to the connecting pipe 13 and the lower end penetrating the top wall of the housing 1 to connect to the internal cavity.

[0081] The annular pipe 15 is threadedly connected to the air outlet end of the exhaust fan 12 to form an exhaust gas outlet channel;

[0082] The filter screen 16 is rigidly fixed inside the lower section of the annular tube 15 and adopts a metal screen structure.

[0083] The filter cotton 17 is filled into the annular tube 15 and tightly covers the upstream exhaust gas inlet side of the filter screen 16;

[0084] The exhaust fan 12 can draw air from the connecting pipe 13. At this time, the water vapor generated by the drying of metal powder in the housing 1 can enter the connecting pipe 13 through the air inlet pipe 14. Then, the exhaust fan 12 will transport the drawn gas to the annular pipe 15. At this time, the filter cotton 17 and filter screen 16 in the annular pipe 15 can filter the metal powder in the gas. This not only prevents the environment from being polluted by metal powder, but also prevents the waste of metal powder. At the same time, the exhaust fan 12 is existing technology and its power is adjustable. When the exhaust fan 12 is started, the operator can adjust the power of the exhaust fan 12 to the predetermined power to prevent a large amount of metal powder in the housing 1 from entering the air inlet pipe 14.

[0085] Specifically, an L-shaped frame 18 is provided at the bottom of the housing 1, and a rotating rod 19 is fixedly installed on one side wall of the housing 1. The rotating rod 19 rotates through the side wall of the L-shaped frame 18 and a rotating disk 20 is fixedly installed thereon.

[0086] A support block 21 is fixedly installed on the L-shaped frame 18. An arc-shaped shell 22 is fixedly installed on the upper end face of the support block 21. Several bearing rollers 23 are provided inside the arc-shaped shell 22. The outer surface of the bearing rollers 23 is in contact with the outer wall surface of the shell 1.

[0087] The L-shaped frame 18 serves as the support base for the shell 1, with the vertical arm and horizontal arm forming a right-angle support structure;

[0088] One end of the rotating rod 19 is fixedly connected to the center of the outer wall of one side of the housing 1, and the other end passes horizontally through the vertical arm of the L-shaped frame 18 and rotates through a bearing;

[0089] The rotating disk 20 is fixedly installed on the end of the rotating rod 19 away from the housing 1. Rotating the rotating disk 20 can drive the rotating rod 19 to rotate, and the rotation of the rotating rod 19 can drive the housing 1 to flip, so as to adjust the orientation of the opening.

[0090] Support block 21 is vertically fixed to the upper surface of the horizontal arm of L-shaped frame 18;

[0091] The lower end face of the arc-shaped shell 22 is welded to the upper surface of the support block 21, and can be relatively fixed. The curvature of its concave arc surface matches the outer diameter of the shell 1.

[0092] The number of bearing rollers 23 is ≥3 sets, which are equidistantly distributed along the circumferential concave surface of the arc-shaped shell 22. Both ends of each bearing roller 23 are rotatably connected to the inner wall of the arc-shaped shell 22 to achieve the degree of freedom of rotation. The outer surface of the roller is in rolling contact with the bottom outer wall of the shell 1, which can provide a supporting force to the shell 1.

[0093] Specifically, a limiting rod 24 is slidably installed on one side wall of the L-shaped frame 18, and a limiting groove 25 is formed on the rotating disk 20 to cooperate with the limiting rod 24;

[0094] There are two limiting grooves 25. When the limiting rod 24 is engaged with one of the limiting grooves 25, the positions of the rotating disk 20, the rotating rod 19 and the housing 1 can be locked, so that the opening is in a horizontal state, which makes it convenient for the staff to add metal powder into the housing 1. At the same time, rotating the rotating disk 20 can drive the rotating rod 19 and the housing 1 to rotate, so that the opening faces downward, which can facilitate the discharge of metal powder in the housing 1. Meanwhile, the limiting rod 24 is engaged with the other limiting groove 25, which can lock the positions of the rotating disk 20, the rotating rod 19 and the housing 1 and prevent them from rotating.

[0095] Working principle: The operator rotates the L-shaped locking lever to open the sealing plate on the outer wall of the housing 1, and puts in metal powder through the opening. The sealing plate is then closed, and the L-shaped locking lever is rotated to lock and fix the locking lever, forming a sealed cavity. The electric heater 3 is activated, and heat is evenly radiated into the interior of the housing 1 through the side wall. Simultaneously, the drive motor 9 is activated, and the output of the drive motor 9 rotates, driving the active bevel gear 11 to rotate. At this time, the active bevel gear 11 simultaneously meshes and drives a pair of driven bevel gears 10 to rotate. The rotation of the pair of driven bevel gears 10 can respectively drive the rotating tube 4 to rotate clockwise and the rotating shaft 5 to rotate counterclockwise. The rotation of the rotating tube 4 and the rotating shaft 5 can then drive a pair of rotating plates 6 to move in the opposite direction. The rotation of the pair of rotating plates 6 can drive several staggered stirring rods 7 to rotate, forming a shearing force field to thoroughly crush the powder clumps. Simultaneously, the rotation of the pair of rotating plates 6 can also drive a pair of stirring plates 8. The inner wall of the housing 1 is scraped synchronously to prevent powder from adhering and coking. Simultaneously, several stirring rods 7 and a pair of stirring plates 8 also stir the metal powder, ensuring it contacts the inner wall of the housing 1 evenly for drying. At the same time, the exhaust fan 12 is started and its power is adjusted to a predetermined level. The exhaust fan 12 draws air from the connecting pipe 13. Water vapor generated during the drying of the metal powder inside the housing 1 enters the connecting pipe 13 through the air inlet pipe 14, and the exhaust fan 12 then transports the drawn gas to the annular pipe 15. The filter cotton 17 and filter screen 16 in the annular pipe 15 then filter the gas... The metal powder is filtered, which not only prevents the environment from being polluted by the metal powder, but also prevents the metal powder from being wasted. After drying, the electric heater 3 and the drive motor 9 are stopped. The limit rod 24 is moved so that it slides out of one of the limit grooves 25. The rotating disk 20 is rotated manually. The rotation of the rotating disk 20 can drive the rotating rod 19 and the housing 1 to rotate, turning the opening to face downward. At this time, the limit rod 24 is moved so that it engages with the other limit groove 25 to lock the position of the housing 1. At this time, the operator rotates the L-shaped locking rod to flip the sealing plate and open the opening, allowing the dried metal powder to fall out of the opening for easy collection.

[0096] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0097] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0098] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0099] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0100] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A dryer for powder metallurgy, characterized in that, include; Shell (1); A heating chamber (2) is formed within the side wall of the housing (1); An electric heater (3) is disposed inside the heating chamber (2); Rotate the tube (4) to rotate through one side wall of the housing (1); The rotating shaft (5) is rotatably connected at one end to the inner wall of the housing (1), and the other end passes through the rotating tube (4). There are two rotating plates (6), each located inside the housing (1) and fixedly mounted on the outer surfaces of the rotating tube (4) and the rotating shaft (5), respectively. Several stirring rods (7) are fixedly installed on the end faces of a pair of rotating plates (6) that are close to each other in an alternating manner. The mixing plates (8) are in pairs and are fixedly installed on the end faces of the pair of rotating plates (6) that are close to each other, and both are in contact with the inner wall surface of the shell (1); A drive mechanism is provided on the outer wall of the housing (1) for driving the rotating tube (4) and the rotating shaft (5) to rotate.

2. The powder metallurgy dryer according to claim 1, characterized in that, The drive mechanism includes; The drive motor (9) is fixedly installed on one side wall of the housing (1); Driven bevel gears (10), in pairs, are fixedly installed on the outer surface of the rotating tube (4) and one end of the rotating shaft (5); The driving bevel gear (11) is fixedly installed on the output end of the drive motor (9) and simultaneously meshes with a pair of driven bevel gears (10); An exhaust mechanism is provided on the housing (1) for exhausting the gas inside the housing (1).

3. A powder metallurgy dryer according to claim 2, characterized in that, The exhaust mechanism includes; An exhaust fan (12) is fixedly installed on one side wall of the housing (1); A connecting pipe (13) is located above the housing (1), with one end connected to the air inlet of the exhaust fan (12) and the other end sealed. The intake pipe (14) is fixedly connected at one end to the connecting pipe (13) and at the other end to the housing (1); An annular pipe (15) is installed at the air outlet of the exhaust fan (12); The filter screen (16) is fixedly installed inside the annular tube (15); The filter cotton (17) is disposed inside the annular tube (15) and located on the filter screen (16).

4. A powder metallurgy dryer according to claim 1, characterized in that, An L-shaped frame (18) is provided below the housing (1), and a rotating rod (19) is fixedly installed on one side wall of the housing (1). The rotating rod (19) rotates through the side wall of the L-shaped frame (18) and is fixedly installed with a rotating disk (20). A support block (21) is fixedly installed on the L-shaped frame (18). An arc-shaped shell (22) is fixedly installed on the upper end face of the support block (21). A plurality of bearing rollers (23) are provided inside the arc-shaped shell (22). The outer surface of the bearing rollers (23) is in contact with the outer wall surface of the shell (1).

5. A powder metallurgy dryer according to claim 4, characterized in that, A limiting rod (24) is slidably installed on one side wall of the L-shaped frame (18), and a limiting groove (25) is formed on the rotating disk (20) to cooperate with the limiting rod (24).

Images