Metal powder mixer

Abstract

The present application relates to a metal powder mixer, and relates to the technical field of powder mixing equipment, which comprises a frame, on which a stirring assembly and a mixing tank are fixedly provided, and the mixing tank is provided with a feed port and a sealing cover thereof, a discharge port and a sealing cover thereof; the stirring assembly comprises a stirring shaft rotatably arranged in the mixing tank, blades fixedly arranged on the outer periphery of the stirring shaft, and a driving member fixedly arranged on the frame and driving the stirring shaft to rotate; a stirring impeller close to the stirring shaft is rotatably provided on the inner wall of the mixing tank, and a power member driving the stirring impeller to rotate is provided on the outside of the mixing tank; in the present application, due to the double stirring of the blades and the stirring impeller, the material powder in the mixing tank is fully stirred, so that the mixture is more evenly mixed, thereby improving the performance of subsequent products.

Description

Technical Field

[0001] The present application relates to the technical field of powder mixing equipment, and in particular to a metal powder mixer. Background Art

[0002] Silver alloy contact materials, especially silver tungsten and silver tungsten carbide graphite, are irreplaceable in the field of circuit breakers. They not only ensure efficient switching of circuits, but also maintain stable operation under extreme current, high temperature and arc impact environments. In the precise process of contact manufacturing, the powder mixing step is the first step, which is directly related to the uniformity of the alloy composition, and thus affects the final performance of the contact.

[0003] At present, there is a powder mixing device on the market, which integrates a base, a stirring component and a powder mixing tank fixed on the base. The stirring component is driven by a stirring motor, and the motor drives the stirring shaft to rotate in the powder mixing tank, and the stirring blades fixed on the shaft are responsible for mixing the powder evenly. In addition, the powder mixing tank is also designed with a feed port and its sealing cover, a discharge port and its sealing cover to ensure the flexibility and sealing of the operation process.

[0004] However, during the actual operation, we found a problem that needs to be solved urgently: although the stirring blades can effectively scrape and mix the powder adhering to the inner wall of the powder mixing tank, the powder near the center of the powder mixing tank is often not fully stirred. This phenomenon causes the alloy composition to be unevenly distributed in the center area, which may affect the density and composition consistency of the contact blank. After the contact product is formed, if there is a problem of uneven distribution of alloy composition, it is likely to cause quality problems such as unstable performance and shortened service life, which will bring hidden dangers to the reliability and safety of the circuit breaker, and there is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide a metal powder mixer to solve the problem of uneven mixing of the material powder by the above-mentioned mixer.

[0006] The metal powder mixer provided in this application adopts the following technical solution:

[0007] A metal powder mixer comprises a frame, on which a stirring assembly and a mixing tank are fixedly provided, the mixing tank is provided with a feed port and a sealing cover thereof, a discharge port and a sealing cover thereof; the stirring assembly comprises a stirring shaft rotatably arranged in the mixing tank, blades fixedly arranged on the outer periphery of the stirring shaft, and a driving member fixedly arranged on the frame and driving the stirring shaft to rotate; a stirring impeller close to the stirring shaft is rotatably provided on the inner wall of the mixing tank, and a power member driving the stirring impeller to rotate is provided on the outside of the mixing tank.

[0008] By adopting the above technical scheme, when the powder mixer is used, the metal powder to be mixed is placed in advance into the powder mixer from the feed port, and then the feed port is blocked; then the driving member and the power member are started to drive the stirring shaft, the blades and the stirring impeller to rotate, and the metal powder in the mixing tank is fully mixed and stirred. After the mixing is completed, the sealing cover is opened to take out the mixed powder; due to the double stirring of the blades and the stirring impeller, the powder in the mixing tank is fully stirred, so that the mixture is more evenly mixed, thereby improving the performance of subsequent products.

[0009] Optionally, the rotating shaft of the stirring impeller extends to the outside of the mixing tank, the power member is a power motor fixedly mounted outside the mixing tank, and the output shaft of the power motor is fixedly connected to the outer end of the rotating shaft of the stirring impeller.

[0010] By adopting the above technical solution, when the stirring impeller is running, the power motor is started to drive the stirring rotation, so that the stirring impeller operates normally, and then the powder near the middle of the mixing tank is fully stirred.

[0011] Optionally, the power part includes a power rod and a transmission rod rotatably arranged above the frame, a connecting piece for connecting the power rod and the transmission rod is provided on the outer periphery of the mixing tank, and a transmission piece for driving the power rod to rotate is provided on the end of the stirring shaft extending to the outside of the mixing tank; a first bevel gear is fixedly provided at the end of the transmission rod away from the power rod, and a second bevel gear meshing with the first bevel gear is fixedly provided on the outer periphery of the end of the rotating shaft of the stirring impeller extending to the outside of the mixing tank.

[0012] By adopting the above technical solution, when the stirring shaft rotates, the power rod is caused to operate synchronously through the transmission member, and then the power rod drives the transmission rod to rotate through the connecting member, and drives the stirring impeller to rotate through the cooperation of the first bevel gear and the second bevel gear. In this way, the blades and the stirring impeller can be driven to rotate at the same time through one driving member, thereby reducing energy consumption and production costs.

[0013] Optionally, the transmission member includes a first transmission wheel, a second transmission wheel and a transmission belt, the first transmission wheel is fixed on the outer circumference of the stirring shaft, the second transmission wheel is fixed on the outer circumference of the power rod, and the transmission belt is sleeved on the outer circumferences of the first transmission wheel and the second transmission wheel.

[0014] By adopting the above technical solution, when the transmission member drives the power rod to rotate, the transmission belt is pre-mounted on the outer circumference of the first transmission wheel and the second transmission wheel, so that when the stirring shaft rotates, the power rod is driven by the belt.

[0015] Optionally, the connecting member includes a connecting sleeve rotatably mounted on the outer circumference of the mixing tank, and a first convex ring and a second convex ring are respectively fixed on the outer circumferences of both ends of the connecting sleeve; teeth are provided on the outer circumferences of the first convex ring and the second convex ring, a first gear meshing with the first convex ring is fixed on the outer circumference of the power rod, and a second gear meshing with the second convex ring is fixed on the outer circumference of the transmission rod.

[0016] By adopting the above technical solution, due to the setting of the connecting sleeve, the first gear and the second gear, when the power rod rotates, the engagement of the first convex ring and the first gear drives the connecting sleeve to rotate, and the engagement of the second convex ring and the second gear drives the transmission rod to rotate, thereby realizing the rotation of the power rod and the transmission rod.

[0017] Optionally, a support plate rotatably connected to the connecting sleeve is provided under the mixing tank, and an arc-shaped support groove for the connecting sleeve to be inserted is provided on the support plate; positioning clamps are fixed on both ends of the connecting sleeve, and an annular groove for the positioning clamp to be inserted and slide is provided on the side wall of the arc-shaped support groove.

[0018] By adopting the above technical solution, the connection sleeve is supported due to the setting of the support plate; the mixing tank is also supported synchronously through the matching setting of the positioning clamp ring and the annular clamping groove, thereby improving its assembly stability.

[0019] Optionally, a clearance ring groove for inserting the edges of the sealing cover and the blocking cover is opened on the edge of one end of the connecting sleeve, and the support plate is slidably arranged on the frame, and a driving source is fixed on the frame to drive the support plate to slide back and forth along the axial direction of the connecting sleeve.

[0020] By adopting the above technical solution, due to the setting of the yield ring groove on the connecting sleeve, when the teeth on the first convex ring and the second convex ring are respectively engaged with the first gear and the second gear, the connecting sleeve is synchronously sleeved on the outer periphery of the sealing cover and the blocking cover, that is, the edges of the sealing cover and the blocking cover are inserted into the inside of the yield ring groove, so as to lock the sealing cover and the blocking cover to prevent the sealing cover and the blocking cover from being opened when the mixing tank is running; after the mixing is completed, the driving source can be started to drive the connecting sleeve to move, thereby releasing the lock on the sealing cover and the blocking cover.

[0021] Optionally, the driving source includes a driving motor fixed on the frame and a driving screw coaxially fixed to the driving motor, and the support plate is provided with a first screw hole for the driving screw to be screwed into and pass through.

[0022] By adopting the above technical solution, the staff can control the driving motor to drive the driving screw to rotate, and then control the reciprocating sliding of the support plate and the connecting sleeve.

[0023] Optionally, a locking sleeve symmetrical to the connecting sleeve is sleeved on the outer circumference of the mixing tank, and a locking notch for inserting the edge of the sealing cover and the blocking cover is provided on the end of the locking sleeve; a locking plate fixedly connected to the lower part of the locking sleeve is slidably provided on the frame, and a second screw hole for a driving screw to be screwed in and pass through is provided on the locking plate, and two sections of threads with opposite rotation directions are provided on the outer circumference of the driving screw.

[0024] By adopting the above technical solution, when the driving motor is running, it drives the support plate and the locking plate to slide back and forth in opposite directions; when the teeth on the first convex ring and the second convex ring are respectively engaged with the first gear and the second gear, the two opposite edges of the sealing cover and the blocking cover can be locked at the same time, and the mixing tank is further supported by the locking plate and the locking sleeve.

[0025] Optionally, wear-resistant pads are fixedly provided on the sides of the connecting sleeve and the locking sleeve facing the mixing tank.

[0026] By adopting the above technical solution, when the locking sleeve and the connecting sleeve slide back and forth, the wear-resistant pad fits against the outer peripheral surface of the mixing tank, thereby cleaning the impurities adhered to the outer periphery of the mixing tank.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When the powder mixer is used, the metal powder to be mixed is placed into the powder mixer from the feed port in advance, and then the feed port is blocked; then the driving part and the power part are started to drive the stirring shaft, the blades and the stirring impeller to rotate, and the metal powder in the mixing tank is fully mixed and stirred. After the mixing is completed, the sealing cover is opened and the mixed powder is taken out; due to the double stirring of the blades and the stirring impeller, the powder in the mixing tank is fully stirred, so that the mixture is more evenly mixed, thereby improving the performance of subsequent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0031] Figure 2 It is a cross-sectional structural diagram of the installation and matching of the driving member embodied in the first embodiment of the present application;

[0032] Figure 3It is a cross-sectional structural schematic diagram of the installation and matching of the power member and the stirring impeller in Example 1 of the present application;

[0033] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application;

[0034] Figure 5 It is a cross-sectional structural schematic diagram of the installation and matching of the power rod and the transmission rod in Example 2 of the present application;

[0035] Figure 6 This is a partial structural diagram of the installation and matching of the transmission member in Example 2 of the present application;

[0036] Figure 7 yes Figure 6 A magnified schematic diagram of part A;

[0037] Figure 8 It is a cross-sectional structural schematic diagram of the installation and cooperation of the connecting sleeve and the locking sleeve in Example 2 of the present application;

[0038] Fig. 9 yes Figure 8 A magnified schematic diagram of part B;

[0039] Fig.10 yes Figure 8 A magnified schematic diagram of part C;

[0040] Fig.11 yes Figure 8 Enlarged schematic diagram of part D in the figure.

[0041] In the figure, 1, frame; 2, stirring assembly; 21, stirring shaft; 22, blade; 23, driving member; 231, servo motor; 232, reducer; 3, mixing tank; 31, feed inlet; 32, blocking cover; 321, sealing convex block; 33, discharge port; 34, sealing cover; 35, limit plate; 4, stirring impeller; 41, second bevel gear; 5, power member; 51, power motor; 52, power rod; 521, first gear; 53, transmission rod; 531, first bevel gear; 532, second gear; 54, Connecting piece; 541, connecting sleeve; 5411, first convex ring; 5412, second convex ring; 5413, positioning snap ring; 5414, yielding ring groove; 55, transmission piece; 551, first transmission wheel; 552, second transmission wheel; 553, transmission belt; 6, support plate; 61, arc-shaped support groove; 611, annular snap groove; 62, first screw hole; 7, driving source; 71, driving motor; 72, driving screw; 8, locking sleeve; 81, locking notch; 82, wear-resistant pad; 9, locking plate; 91, second screw hole. DETAILED DESCRIPTION

[0042] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0043] Embodiment 1:

[0044] Reference Figure 1 , Figure 2 and Figure 3 A metal powder mixer comprises a frame 1, on which a stirring assembly 2 and a mixing tank 3 are fixedly mounted. The mixing tank 3 is cylindrical in shape and fixedly mounted on the upper side of the frame 1 in a horizontal direction. The mixing tank 3 is provided with a feed port 31 and a blocking cover 32 thereof, a discharge port 33 and a sealing cover 34 thereof;

[0045] The stirring assembly 2 includes a stirring shaft 21 rotatably arranged in the mixing tank 3, blades 22 fixedly arranged on the outer periphery of the stirring shaft 21, and a driving member 23 fixedly arranged on the frame 1 and driving the stirring shaft 21 to rotate; the staff can start the driving member 23 to drive the stirring shaft 21 and the stirring blades 22 to rotate, thereby mixing the powder in the mixing tank 3.

[0046] Reference Figure 3 The outer side surfaces of the blocking cover 32 and the sealing cover 34 are arc surfaces, and the blocking cover 32 is fixed with a sealing protrusion 321 made of rubber material, and the sealing protrusion 321 is used to fill the feed port 31 and the discharge port 33, thereby improving the sealing performance of the mixing tank 3 when used;

[0047] One side edge of the sealing cover 32 is hinged to the outer periphery of the mixing tank 3, and the other side of the sealing cover 32 is fastened by screws; this is a conventional sealing structure, and the sealing cover 34 has the same structure and installation method as the sealing cover 32, only the installation position is different, which will not be repeated here.

[0048] Reference Figure 2 and Figure 3 The driving member 23 includes a servo motor 231 and a reducer 232 fixed on the frame 1. One end of the stirring shaft 21 passes through the mixing tank 3 and extends to the outside. The servo motor 231 and the reducer 232 are combined together to drive the outer end of the stirring shaft 21 to rotate, thereby driving the stirring shaft 21 and the blade 22 to operate. A clearance notch is provided on the blade 22. By setting the clearance notch, the surface area of ​​the blade 22 is increased, so that the powder can be stirred better.

[0049] Reference Figure 2 and Figure 3 A stirring impeller 4 close to the stirring shaft 21 is rotatably provided on the inner wall of the mixing tank 3, and a power member 5 for driving the stirring impeller 4 to rotate is provided outside the mixing tank 3. The power member 5 is a power motor 51 fixedly arranged outside the mixing tank 3, wherein the rotating shaft of the stirring impeller 4 extends to the outside of the mixing tank 3, and the output shaft of the power motor 51 is fixedly connected to the outer end of the rotating shaft of the stirring impeller 4; when the power motor 51 is started, the stirring impeller 4 is driven to rotate.

[0050] The implementation principle of the embodiment of the present application is:

[0051] When the powder mixer is used, the metal powder to be mixed is placed into the powder mixer from the feed port 31 in advance, and then the feed port 31 is blocked; then the driving member 23 and the power member 5 are started to drive the stirring shaft 21, the blades 22 and the stirring impeller 4 to rotate, so as to fully mix and stir the metal powder in the mixing tank 3.

[0052] Embodiment 2:

[0053] Reference Figure 4 and Figure 5 , the embodiment of the present application is different from the embodiment 1 in that the power member 5 includes a power rod 52 and a transmission rod 53 rotatably arranged above the frame 1, two limit plates 35 are fixedly arranged on the outer periphery of the mixing tank 3 for respectively supporting the power rod 52 and the transmission rod 53 for rotation, and a connecting member 54 for connecting the power rod 52 and the transmission rod 53 is arranged on the outer periphery of the mixing tank 3, wherein the end of the stirring shaft 21 extending to the outside of the mixing tank 3 is provided with a transmission member 55 for driving the power rod 52 to rotate;

[0054] A first bevel gear 531 is fixedly arranged at the end of the transmission rod 53 away from the power rod 52, and a second bevel gear 41 meshing with the first bevel gear 531 is fixedly arranged on the outer periphery of the end portion of the rotating shaft of the stirring impeller 4 extending to the outside of the mixing tank 3; when the stirring shaft 21 rotates, the power rod 52 is synchronously operated through the transmission member 55, and then the power rod 52 drives the transmission rod 53 to rotate through the connecting member 54, and drives the stirring impeller 4 to rotate through the cooperation of the first bevel gear 531 and the second bevel gear 41.

[0055] Reference Figure 6 The transmission member 55 includes a first transmission wheel 551, a second transmission wheel 552 and a transmission belt 553. The first transmission wheel 551 is fixed on the outer periphery of the stirring shaft 21, the second transmission wheel 552 is fixed on the outer periphery of the power rod 52, and the transmission belt 553 is sleeved on the outer periphery of the first transmission wheel 551 and the second transmission wheel 552; when the stirring shaft 21 rotates, the power rod 52 is driven synchronously by the belt.

[0056] Reference Figure 6 and Figure 7 The connecting member 54 includes a connecting sleeve 541 rotatably sleeved on the outer periphery of the mixing tank 3, and a first convex ring 5411 and a second convex ring 5412 are respectively fixed on the outer peripheries of both ends of the connecting sleeve 541; teeth are arranged on the outer peripheries of the first convex ring 5411 and the second convex ring 5412, a first gear 521 meshing with the teeth on the first convex ring 5411 is fixed on the outer periphery of the power rod 52, and a second gear 532 meshing with the teeth on the second convex ring 5412 is fixed on the outer periphery of the transmission rod 53; when the power rod 52 rotates, it drives the connecting sleeve 541 and the transmission rod 53 to rotate in turn.

[0057] Reference Figure 8 and Fig. 9 A support plate 6 rotatably connected to the connecting sleeve 541 is provided at the bottom of the mixing tank 3, and an arc-shaped supporting groove 61 for the connecting sleeve 541 to be placed is provided on the support plate 6. Positioning clamping rings 5413 are fixed on both ends of the connecting sleeve 541, and an annular clamping groove 611 for the positioning clamping ring 5413 to be inserted and slide is provided on the side wall of the arc-shaped supporting groove 61; in this way, the connecting sleeve 541 is supported by the support plate 6, and the mixing tank 3 is also supported simultaneously, thereby improving its assembly stability.

[0058] Reference Figure 8 and Fig.10 A clearance ring groove 5414 is provided on one end edge of the connecting sleeve 541 for inserting the edges of the sealing cover 34 and the blocking cover 32. The support plate 6 is slidably arranged on the frame 1. A driving source 7 is fixed on the frame 1 for driving the support plate 6 to slide back and forth along the axis direction of the connecting sleeve 541.

[0059] When the teeth on the first convex ring 5411 and the second convex ring 5412 are respectively engaged with the first gear 521 and the second gear 532, the connecting sleeve 541 is synchronously sleeved on the outer periphery of the sealing cover 34 and the blocking cover 32, that is, the edges of the sealing cover 34 and the blocking cover 32 are inserted into the inside of the yield ring groove 5414, so as to lock the sealing cover 34 and the blocking cover 32 to prevent the sealing cover 34 and the blocking cover 32 from being opened when the mixing tank 3 is in operation.

[0060] Reference Figure 8 and Fig.11 The driving source 7 includes a driving motor 71 fixed on the frame 1, a driving screw 72 coaxially fixed with the driving motor 71, and a first screw hole 62 for the driving screw 72 to be screwed into and passed through is provided on the support plate 6; a locking sleeve 8 symmetrical to the connecting sleeve 541 is sleeved on the outer periphery of the mixing tank 3, wherein a locking notch 81 for the edges of the sealing cover 34 and the blocking cover 32 to be inserted is provided on the end of the locking sleeve 8; a locking plate 9 fixedly connected to the lower part of the locking sleeve 8 is slidably provided on the frame 1, and a second screw hole 91 for the driving screw 72 to be screwed into and passed through is provided on the locking plate 9, and two sections of threads with opposite rotation directions are provided on the outer periphery of the driving screw 72;

[0061] When the driving motor 71 is running, it drives the support plate 6 and the locking plate 9 to slide back and forth in opposite directions; when the teeth on the first convex ring 5411 and the second convex ring 5412 are respectively engaged with the first gear 521 and the second gear 532, the two opposite edges of the sealing cover 34 and the blocking cover 32 can be locked at the same time, and the mixing tank 3 is further supported by the locking plate 9 and the locking sleeve 8.

[0062] Reference Figure 8 and Fig.11A wear-resistant pad 82 made of rubber is fixed on the side of the connecting sleeve 541 and the locking sleeve 8 facing the mixing tank 3. When the locking sleeve 8 and the connecting sleeve 541 slide back and forth, the wear-resistant pad 82 fits against the outer peripheral surface of the mixing tank 3 to clean the impurities adhered to the outer periphery of the mixing tank 3.

[0063] The implementation principle of the embodiment of the present application is:

[0064] When the powder mixer is running, the driving motor 71 is started, and the supporting plate 6 and the locking plate 9 slide, so that the two opposite edges of the sealing cover 34 and the blocking cover 32 are respectively inserted into the locking notch 81 on the locking sleeve 8 and the yielding ring groove 5414 on the connecting sleeve 541, thereby locking the sealing cover 34 and the blocking cover 32;

[0065] Then, the driving member 23 is started to drive the power rod 52, and the connecting sleeve 541 and the driving rod 53 are driven to rotate in turn, and finally the stirring shaft 21, the blades 22 and the stirring impeller 4 are driven to rotate, so as to fully mix and stir the metal powder inside the mixing tank 3, thereby achieving stirring and mixing of the metal powder;

[0066] When the locking sleeve 8 and the connecting sleeve 541 slide back and forth, the wear-resistant pad 82 fits against the outer circumference of the mixing tank 3 , thereby cleaning the impurities adhering to the outer circumference of the mixing tank 3 , thereby achieving rapid cleaning of the outer circumference of the mixing tank 3 .

[0067] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0068] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A metal powder mixer, comprising a frame (1), a stirring assembly (2) and a mixing tank (3) fixedly mounted on the frame (1), the mixing tank (3) being provided with a feed port (31) and a blocking cover (32) thereof, a discharge port (33) and a sealing cover (34) thereof; the stirring assembly (2) comprising a stirring shaft (21) rotatably mounted in the mixing tank (3), a blade (22) fixedly mounted on the outer periphery of the stirring shaft (21), and a driving member (23) fixedly mounted on the frame (1) and driving the stirring shaft (21) to rotate; It is characterized in that A stirring impeller (4) close to the stirring shaft (21) is rotatably provided on the inner wall of the mixing tank (3), and a power member (5) for driving the stirring impeller (4) to rotate is provided on the outside of the mixing tank (3); the power member (5) comprises a power rod (52) and a transmission rod (53) rotatably provided above the frame (1); a connecting member (54) for connecting the power rod (52) and the transmission rod (53) is provided on the outer periphery of the mixing tank (3); and a transmission member (55) for driving the power rod (52) to rotate is provided on the end of the stirring shaft (21) extending to the outside of the mixing tank (3); A first bevel gear (531) is fixedly provided at the end of the transmission rod (53) away from the power rod (52); a second bevel gear (41) meshing with the first bevel gear (531) is fixedly provided on the outer periphery of the end of the rotating shaft of the stirring impeller (4) extending to the outside of the mixing tank (3); The transmission member (55) comprises a first transmission wheel (551), a second transmission wheel (552) and a transmission belt (553); the first transmission wheel (551) is fixedly arranged on the outer periphery of the stirring shaft (21); the second transmission wheel (552) is fixedly arranged on the outer periphery of the power rod (52); and the transmission belt (553) is sleeved on the outer peripheries of the first transmission wheel (551) and the second transmission wheel (552); The connecting member (54) comprises a connecting sleeve (541) rotatably sleeved on the outer circumference of the mixing tank (3); a first convex ring (5411) and a second convex ring (5412) are respectively fixedly provided on the outer circumferences of both ends of the connecting sleeve (541); teeth are provided on the outer circumferences of the first convex ring (5411) and the second convex ring (5412); a first gear (521) meshing with the first convex ring (5411) is fixedly provided on the outer circumference of the power rod (52); and a second gear (532) meshing with the second convex ring (5412) is fixedly provided on the outer circumference of the transmission rod (53); A support plate (6) rotatably connected to the connecting sleeve (541) is provided below the mixing tank (3); an arc-shaped support groove (61) for the connecting sleeve (541) to be inserted is provided on the support plate (6); positioning snap rings (5413) are fixedly provided on both ends of the connecting sleeve (541); an annular snap groove (611) for the positioning snap ring (5413) to be inserted and slid is provided on the side wall of the arc-shaped support groove (61); A clearance ring groove (5414) is provided on the edge of one end of the connecting sleeve (541) for inserting the edges of the sealing cover (34) and the blocking cover (32); the support plate (6) is slidably arranged on the frame (1); a driving source (7) is fixed on the frame (1) for driving the support plate (6) to slide back and forth along the axial direction of the connecting sleeve (541); the driving source (7) comprises a driving motor (71) fixed on the frame (1) and a driving screw (72) coaxially fixed with the driving motor (71); a first screw hole (62) is provided on the support plate (6) for the driving screw (72) to be screwed into and pass through; A locking sleeve (8) symmetrical to the connecting sleeve (541) is sleeved on the outer circumference of the mixing tank (3), and a locking notch (81) for inserting the edges of the sealing cover (34) and the blocking cover (32) is provided on the end of the locking sleeve (8); a locking plate (9) fixedly connected to the lower part of the locking sleeve (8) is slidably provided on the frame (1), and a second screw hole (91) for the driving screw (72) to be screwed into and pass through is provided on the locking plate (9), and two sections of threads with opposite rotation directions are provided on the outer circumference of the driving screw (72).

2. A metal powder mixer according to claim 1, characterized in that: Wear-resistant pads (82) are fixedly provided on the sides of the connecting sleeve (541) and the locking sleeve (8) facing the mixing tank (3).

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