Metal powder metallurgy mixing device

Abstract

The invention relates to the technical field of mixing devices, in particular to a metal powder metallurgy mixing device.The metal powder metallurgy mixing device comprises a mixing box, a stirring shaft and a regulating and controlling assembly.When metal powder metallurgy is used, multiple kinds of metal powder are fed into a mixing cavity through a feeding port according to a specific proportion, and a driving part drives the stirring shaft; the stirring shaft rotates in the mixing cavity, the stirring blades on the stirring shaft mix and stir metal powder in the mixing cavity, in the rotating process of the stirring shaft, the regulation and control assembly conveys gas in the mixing cavity into the stirring shaft, and the gas entering the stirring shaft enters the multiple stirring blades at the same time; the gas entering the stirring blades returns to the mixing cavity again through the gas outlet holes, and the gas forms a gas film on the surfaces of the stirring blades, so that the impact of the metal powder on the stirring blades is reduced, the damage of the metal powder on the stirring blades is reduced, the service life of the stirring blades is prolonged, and the mixing efficiency of the metal powder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mixing devices, and in particular to a metal powder metallurgy mixing device. Background Art

[0002] In the metal powder metallurgy process, the raw materials made by mixing multiple metal powders in specific proportions are the basis for producing high-quality products. In order to ensure the uniform texture of the final product, fully mixing various metal powders to a uniform state is a crucial production link.

[0003] In the process of mixing metal powders, commonly used mixing devices are generally equipped with stirring blades to achieve mixing operations. However, during the mixing process, metal powders will frequently and violently collide with the stirring blades due to their certain hardness and particle characteristics. As the number of uses increases, these collisions will gradually cause serious damage to the stirring blades, which will directly affect the mixing effect and reduce the uniformity of mixing the metal powders, thereby affecting product quality and causing the metal products produced to have problems such as uneven texture and unstable performance. Secondly, damage to the stirring blades will reduce the service life of the entire mixing device. Frequent replacement of stirring blades will not only increase production costs, but also cause frequent interruptions in the production process and reduce production efficiency. Summary of the invention

[0004] The invention provides a metal powder metallurgy mixing device to solve the problem of low production efficiency of the existing metal powder metallurgy.

[0005] A metal powder metallurgy mixing device of the present invention adopts the following technical solution: A metal powder metallurgy mixing device comprises a mixing box, a stirring shaft and a regulating component.

[0006] The mixing box has a mixing chamber inside, and is provided with a feed port and a discharge port connecting the mixing chamber and the external environment; wherein the feed port is arranged above the discharge port; the stirring shaft is coaxially arranged in the mixing chamber; a driving member is arranged on the mixing box, and the driving member is used to drive the stirring shaft to rotate; a plurality of stirring blades are arranged on the stirring shaft, the stirring shaft is hollow inside, the stirring blades are hollow inside, the interior of the stirring blades is connected with the interior of the stirring shaft, and a plurality of air outlets connecting the mixing chamber and the interior of the stirring blades are arranged on the side walls of the stirring blades; the regulating component is used to regulate the gas inside the mixing chamber to enter the interior of the stirring shaft when the stirring shaft rotates, and control the gas entering the interior of the stirring shaft to return to the mixing chamber again through the air outlet; a regulating tube is coaxially arranged on the inner side wall of the mixing box, a regulating groove is arranged on the upper end of the regulating tube, a regulating platform is arranged on the stirring shaft, the end of the stirring shaft is plugged into the inside of the regulating tube, and the regulating platform can be connected with the The regulating groove is matched, and when the stirring shaft rotates, the stirring shaft can reciprocate in the direction of its own axis; the regulating component includes an air pipe, a regulating plate and a transmission member, the regulating plate is slidingly and sealingly connected to the inner wall of the mixing box, and the regulating plate can separate the mixing chamber into a relatively isolated inner chamber and an outer chamber; the air pipe can be telescopically arranged, and the air pipe connects the outer chamber with the inside of the stirring shaft; the transmission member is used to drive the regulating plate to reciprocate in the mixing box when the stirring shaft reciprocates along its own axis, and when the volume of the inner chamber increases and the volume of the outer chamber decreases, the gas in the outer chamber can enter the inside of the stirring shaft through the air pipe; the regulating component also includes an electric control valve and an air inlet; a plurality of air inlets are arranged, and a plurality of air inlet holes are arranged on the regulating plate, and the air inlet holes connect the inner chamber and the outer chamber; the electric control valve is arranged on the air pipe, and when the volume of the inner chamber increases and the volume of the outer chamber decreases, the electric control valve is in a state of conducting the air pipe.

[0007] Furthermore, the transmission part includes a transmission sleeve, a transmission gear and a transmission rack, and the transmission sleeve is coaxially fixed on the stirring shaft; the transmission gear is rotatably connected to the inner wall of the mixing box, and the transmission gear is always engaged with the transmission sleeve; the transmission rack is fixedly connected to the regulating plate, and the transmission rack is engaged with the transmission gear. When the stirring shaft reciprocates along its own axial direction, the regulating plate reciprocates in the mixing box.

[0008] Furthermore, a speed gear is provided on the bracket, the speed gear is coaxially fixedly connected with the transmission gear, the number of teeth of the speed gear is greater than the number of teeth of the transmission gear, and the diameter of the speed gear is greater than the diameter of the transmission gear; the transmission gear is meshed with the transmission gear sleeve, and the speed gear is meshed with the transmission rack.

[0009] Furthermore, the regulating component also includes a spoiler hole, and a plurality of spoiler holes are provided. The plurality of spoiler holes are arranged on the regulating plate, and the plurality of spoiler holes are arranged below the plurality of air inlet holes. A spoiler fan and a one-way valve are also arranged in each spoiler hole. The conduction direction of the one-way valve is from the inner cavity to the outer cavity. The spoiler fan is used to start when the volume of the inner cavity increases and the volume of the outer cavity decreases, and the spoiler fan can blow air into the outer cavity.

[0010] Furthermore, a control panel is provided on the mixing box, and the control panel is used to control the spoiler fan and the electric control valve simultaneously.

[0011] Furthermore, a filter screen is provided at one end of the gas delivery pipe in the outer cavity, and the filter screen can prevent metal powder from entering the gas delivery pipe.

[0012] Furthermore, the driving member includes a driving motor, which is fixedly connected to the mixing box. The driving motor has a power output shaft, which runs through the mixing box and is coaxially slidably connected to the stirring shaft.

[0013] The beneficial effects of the present invention are as follows: a metal powder metallurgy mixing device of the present invention comprises a mixing box, a stirring shaft and a regulating component. When using metal powder metallurgy, a plurality of metal powders are fed into a mixing chamber through a feed port in a specific proportion. The driving member drives the stirring shaft so that the stirring shaft rotates in the mixing chamber. The stirring blades on the stirring shaft mix and stir the metal powders in the mixing chamber. During the rotation of the stirring shaft, the regulating component transports the gas in the mixing chamber to the interior of the stirring shaft. The gas entering the interior of the stirring shaft enters multiple stirring blades at the same time. The gas entering the interior of the stirring blade returns to the mixing chamber again through the air outlet. The gas forms an air film on the surface of the stirring blade, thereby reducing the impact of the metal powder on the stirring blade, reducing the damage of the metal powder to the stirring blade, and increasing the service life of the stirring blade, thereby improving the mixing efficiency of the metal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A schematic structural diagram of a metal powder metallurgy mixing device provided in an embodiment of the present invention; Figure 2 A top view of a metal powder metallurgy mixing device provided by an embodiment of the present invention; Figure 3 for Figure 2 Sectional view in the AA direction; Figure 4 A side view of a metal powder metallurgy mixing device provided by an embodiment of the present invention; Figure 5 for Figure 4 Cross-sectional view in the BB direction; Figure 6 for Figure 4Cross-sectional view in CC direction; Figure 7 A schematic structural diagram of a stirring shaft and stirring blades in a metal powder metallurgy mixing device provided in an embodiment of the present invention.

[0016] In the figure: 110, mixing box; 111, mixing chamber; 112, inner chamber; 113, outer chamber; 120, feed port; 210, stirring shaft; 220, stirring blade; 221, air outlet; 230, regulating pipe; 240, air supply pipe; 250, regulating plate; 270, air inlet; 310, transmission gear sleeve; 320, transmission gear; 330, transmission rack; 350, spoiler hole; 370, drive motor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0019] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] like Figures 1 to 7As shown, an embodiment of the present invention provides a metal powder metallurgy mixing device, which includes a mixing box 110, a stirring shaft 210 and a regulating component.

[0021] The mixing box 110 is arranged vertically, and the interior of the mixing box 110 is hollow. The hollow chamber inside the mixing box 110 is a mixing chamber 111. A feed port 120 connecting the mixing chamber 111 and the external environment is arranged on the upper end surface of the mixing box 110, and a discharge port connecting the mixing chamber 111 and the external environment is arranged on the lower end surface of the mixing box 110. A first sealing plate is arranged on the upper end surface of the mixing box 110, and the first sealing plate can seal the feed port 120 after the metal powder is transported to the mixing chamber 111 through the feed port 120. A second sealing plate is arranged on the lower end surface of the mixing box 110, and the second sealing plate can unblock the discharge port after the metal powder is evenly mixed in the mixing chamber 111.

[0022] The stirring shaft 210 is disposed in the mixing chamber 111, and the stirring shaft 210 is coaxially disposed with the mixing chamber 111. A driving member is disposed on the mixing box 110, and the driving member is used to drive the stirring shaft 210 to rotate. After the metal powder is transported into the mixing chamber 111 through the feed port 120, the driving member drives the stirring shaft 210. A plurality of stirring blades 220 are disposed on the stirring shaft 210, and the plurality of stirring blades 220 are divided into a plurality of groups, and each group of stirring blades 220 is evenly distributed around the circumference of the stirring shaft 210. The plurality of groups of stirring blades 220 are evenly distributed along the axis direction of the stirring shaft 210. When the stirring shaft 210 rotates, the plurality of stirring blades 220 stir the metal powder entering the mixing chamber 111. The interior of the stirring shaft 210 is hollow, and the interior of the stirring blades 220 is hollow, and the interior of the stirring blades 220 is connected to the interior of the stirring shaft 210. Further, a plurality of connecting tubes are provided on the stirring shaft 210, each connecting tube is connected to the interior of the stirring shaft 210, each connecting tube is connected to a stirring blade 220, and the interior of each connecting tube is connected to the interior of the stirring blade 220. Under the action of the connecting tubes, the interiors of the plurality of stirring blades 220 are simultaneously connected to the stirring shaft 210. The side wall of the stirring blade 220 is provided with a plurality of air outlet holes 221 connecting the mixing chamber 111 and the interior of the stirring blade 220, and the plurality of air outlet holes 221 are evenly arranged on the side wall of the stirring blade 220.

[0023] The regulating component is used to regulate the gas inside the mixing chamber 111 to enter the stirring shaft 210 when the stirring shaft 210 rotates, and control the gas entering the stirring shaft 210 to return to the mixing chamber 111 again through the air outlet 221. Specifically, when the gas is discharged into the mixing chamber 111 from the air outlet 221 on the stirring blade 220, the gas forms an air film on the surface of the stirring blade 220. During the process of stirring the metal powder by the stirring blade 220, the air film formed on the surface of the stirring blade 220 can reduce the impact of the metal powder on the stirring blade 220, thereby reducing the probability of damage to the stirring blade 220.

[0024] A metal powder metallurgy mixing device of the present invention, when using metal powder metallurgy, multiple metal powders are put into a mixing chamber 111 through a feed port 120 according to a specific ratio, a driving member drives a stirring shaft 210 so that the stirring shaft 210 rotates in the mixing chamber 111, and a stirring blade 220 on the stirring shaft 210 mixes and stirs the metal powders in the mixing chamber 111. During the rotation of the stirring shaft 210, the regulating component transports the gas in the mixing chamber 111 to the inside of the stirring shaft 210, and the gas entering the inside of the stirring shaft 210 enters the inside of multiple stirring blades 220 at the same time. The gas entering the stirring blade 220 returns to the mixing chamber 111 again through the air outlet 221, and the gas forms an air film on the surface of the stirring blade 220, thereby reducing the impact of the metal powder on the stirring blade 220, reducing the damage of the metal powder to the stirring blade 220, and improving the service life of the stirring blade 220, thereby improving the mixing efficiency of the metal powder.

[0025] In one embodiment, a control tube 230 is coaxially arranged on the inner wall of the mixing box 110. Specifically, the control tube 230 is fixedly arranged on the lower end surface of the inner wall of the mixing box 110. The control tube 230 is coaxially arranged with the stirring shaft 210. The inside of the control tube 230 is hollow. The lower end of the stirring shaft 210 is provided with a plug connector, which can be inserted into the inside of the control tube 230 and can rotate in the control tube 230. A control groove is arranged on the upper end of the control tube 230, and a control platform is arranged on the stirring shaft 210. The end of the stirring shaft 210 is plugged into the inside of the control tube 230, and the control platform can fit with the control groove. When the stirring shaft 210 rotates, the control platform on the stirring shaft 210 squeezes the control groove, so that the stirring shaft 210 can reciprocate in the direction of its own axis. When the stirring shaft 210 reciprocates along the direction of its own axis, the stirring shaft 210 drives the stirring blade 220 to fully stir the metal powder in the mixing chamber 111.

[0026] In one embodiment, the control assembly includes an air delivery pipe 240, a control plate 250 and a transmission member, such as Figure 5As shown, in the cross section of the mixing box 110, the mixing box 110 has a first side wall and a second side wall that are parallel to each other, and the first side wall and the second side wall are spaced apart. The height of the regulating plate 250 in the vertical direction is equal to the height of the mixing box 110, and the width of the regulating plate 250 is equal to the distance between the first side wall and the second side wall. The regulating plate 250 is slidably sealedly connected with the first side wall and the second side wall of the mixing box 110, and the regulating plate 250 is always in the mixing chamber 111. The regulating plate 250 can separate the mixing chamber 111 into a relatively isolated inner chamber 112 and an outer chamber 113, wherein the stirring shaft 210 is in the inner chamber 112 of the mixing chamber 111. The air pipe 240 can be telescopically arranged, and the air pipe 240 connects the outer cavity 113 with the interior of the stirring shaft 210. Specifically, the interior of the regulating pipe 230 is connected with the interior of the stirring shaft 210, one end of the air pipe 240 is connected with the interior of the regulating pipe 230, and the other end of the air pipe 240 is connected with the outer cavity 113. When the stirring shaft 210 reciprocates along its own axis, the air pipe 240 will not interfere with the movement of the stirring shaft 210. The transmission member is used to drive the regulating plate 250 to reciprocate in the mixing box 110 when the stirring shaft 210 reciprocates along its own axis. When the regulating plate 250 reciprocates in the mixing chamber 111, the volumes of the inner cavity 112 and the outer cavity 113 will change at the same time, but the total volume of the inner cavity 112 and the outer cavity 113 remains unchanged. When the volume of the inner cavity 112 increases and the volume of the outer cavity 113 decreases, the gas in the outer cavity 113 can enter the interior of the stirring shaft 210 through the gas pipe 240 , thereby forming an air film on the outer surface of the stirring blade 220 .

[0027] In one embodiment, the control component further includes an electric control valve and an air inlet 270; a plurality of air inlet holes 270 are provided, and the plurality of air inlet holes 270 are provided on the control plate 250. Specifically, the air inlet holes 270 penetrate the two side walls of the control plate 250, and the air inlet holes 270 connect the inner cavity 112 and the outer cavity 113. When the control plate 250 reciprocates in the mixing box 110, the gas in the inner cavity 112 and the outer cavity 113 can be exchanged through the air inlet holes 270. Further, when the volume of the inner cavity 112 increases and the volume of the outer cavity 113 decreases, part of the gas in the outer cavity 113 directly enters the inner cavity 112 through the air inlet holes 270, and at the same time, part of the gas in the outer cavity 113 enters the interior of the stirring shaft 210 through the gas pipe 240; when the volume of the inner cavity 112 decreases and the volume of the outer cavity 113 increases, the gas in the inner cavity 112 directly enters the outer cavity 113 through the air inlet holes 270. The electric control valve is arranged on the gas pipe 240. When the volume of the inner cavity 112 increases and the volume of the outer cavity 113 decreases, the electric control valve is in a state of conducting the gas pipe 240. Furthermore, when the volume of the inner cavity 112 decreases and the volume of the outer cavity 113 increases, the electric control valve is in a state of blocking the gas pipe 240. At this time, when the regulating plate 250 reciprocates in the mixing box 110, the gas in the inner cavity 112 will not enter the interior of the stirring shaft 210 through the air outlet 221 on the stirring blade 220.

[0028] In one embodiment, the transmission member includes a transmission sleeve 310, a transmission gear 320 and a transmission rack 330, and the transmission sleeve 310 is coaxially fixed on the stirring shaft 210; the transmission gear 320 is rotatably connected to the inner wall of the mixing box 110, and the transmission gear 320 is always engaged with the transmission sleeve 310; the transmission rack 330 is fixedly connected to the regulating plate 250, the transmission rack 330 is arranged parallel to the first side wall, and the transmission rack 330 is always engaged with the transmission gear 320. When the stirring shaft 210 reciprocates along its own axial direction, the transmission sleeve 310 moves in the vertical direction, the transmission gear 320 reciprocates, and the transmission rack 330 drives the regulating plate 250 to reciprocate in the mixing box 110, thereby transmitting the vertical movement of the stirring shaft 210 to the reciprocating movement of the regulating plate 250 in the mixing chamber 111. In other embodiments, the transmission member includes a distance sensor and a traction cylinder. The distance sensor is arranged on the inner wall of the mixing box 110; the traction cylinder is arranged on the inner wall of the mixing chamber 111, the traction cylinder is parallel to the first side wall, and the output shaft of the traction cylinder is fixedly connected to the regulating plate 250. When the stirring shaft 210 reciprocates in the vertical direction, the distance sensor can receive relevant signals. A control panel is arranged in the mixing box 110, and the control panel can adjust the length of the traction cylinder according to the signal of the distance sensor, thereby realizing the reciprocating motion of the regulating plate 250 in the mixing chamber 111 when the stirring shaft 210 moves in the vertical direction.

[0029] In one embodiment, a speed gear is provided on the bracket, and the speed gear is coaxially fixedly connected with the transmission gear 320, the number of teeth of the speed gear is greater than the number of teeth of the transmission gear 320, and the diameter of the speed gear is greater than the diameter of the transmission gear 320; the transmission gear 320 is meshed with the transmission gear sleeve 310, and the speed gear is meshed with the transmission rack 330. Specifically, when the stirring shaft 210 reciprocates in a small amplitude in the vertical direction, the control plate 250 reciprocates in a large amplitude in the mixing chamber 111 through the transmission of the transmission gear sleeve 310, the transmission gear 320, the speed gear and the transmission rack 330. For example, the reciprocating distance of the stirring shaft 210 in the vertical direction is 10 cm, and the reciprocating distance of the control plate 250 in the mixing chamber 111 through the transmission of the transmission gear sleeve 310, the transmission gear 320, the speed gear and the transmission rack 330 is 15 cm. By providing the speed change gear, it is ensured that when the regulating plate 250 reciprocates in the mixing chamber 111, a large amount of gas exchange can be performed between the outer chamber 113 and the inner chamber 112.

[0030] In one embodiment, the control component further includes a spoiler hole 350, and a plurality of spoiler holes 350 are provided. The plurality of spoiler holes 350 are provided on the control plate 250, and the spoiler holes 350 are provided through the control plate 250, and the plurality of spoiler holes 350 are provided below the plurality of air inlet holes 270. A spoiler fan and a one-way valve are also provided in each spoiler hole 350, and the conducting direction of the one-way valve is from the inner cavity 112 to the outer cavity 113. The spoiler fan is used to start when the volume of the inner cavity 112 increases and the volume of the outer cavity 113 decreases, and the spoiler fan can blow air into the outer cavity 113 when it is started. Specifically, when the regulating plate 250 reciprocates in the mixing chamber 111, when the volume of the inner chamber 112 decreases and the volume of the outer chamber 113 increases, the gas in the inner chamber 112 enters the outer chamber 113 through the air inlet 270, and at the same time, part of the metal powder in the inner chamber 112 enters the outer chamber 113 along with the gas. Since the metal powder has a certain weight, the metal powder is easily deposited at the bottom of the outer chamber 113. When the volume of the inner chamber 112 increases and the volume of the outer chamber 113 decreases, the spoiler fan is started, and the metal powder entering the outer chamber 113 is blown by the spoiler fan. In the process of reducing the volume of the outer chamber 113, the metal powder in the outer chamber 113 returns to the inner chamber 112 again, and the position where the metal powder enters the outer chamber 113 and the position where the metal powder is discharged from the outer chamber 113 change, thereby accelerating the mixing between the metal powders.

[0031] In one of the embodiments, a control panel is provided on the mixing box 110, and the control panel is used to control the spoiler fan and the electric control valve at the same time. Specifically, the spoiler fan needs to be started when the volume of the inner cavity 112 increases and the volume of the outer cavity 113 decreases. At the same time, the electric control valve needs to connect the gas pipe 240 when the volume of the inner cavity 112 increases and the volume of the outer cavity 113 decreases. The control panel is used to control the spoiler fan and the electric control valve at the same time to improve the accuracy of controlling the spoiler fan and the electric control valve.

[0032] In one embodiment, a filter is provided at one end of the gas pipe 240 in the outer cavity 113, and the filter can prevent metal powder from entering the gas pipe 240. Specifically, when the control plate 250 reciprocates in the mixing cavity 111, part of the metal powder in the inner cavity 112 can enter the outer cavity 113, and the gas in the outer cavity 113 can enter the inside of the stirring shaft 210 through the gas pipe 240. In order to prevent the metal powder from entering the inside of the stirring shaft 210, the filter is used to block the metal powder to ensure that the metal powder does not remain in the stirring shaft 210.

[0033] In one embodiment, the driving member includes a driving motor 370, which is fixedly connected to the mixing box 110. The driving motor 370 has a power output shaft, which passes through the mixing box 110. The power output shaft is coaxially slidably connected to the stirring shaft 210. When the stirring shaft 210 reciprocates along its own axial direction, the power output shaft of the driving motor 370 will not hinder the movement of the stirring shaft 210.

[0034] In one embodiment, the mixing box 110 has multiple first side walls and second side walls, and an adjustment plate 250 is arranged between each of the first side walls and the second side walls, so that multiple outer chambers 113 and an inner chamber 112 are formed in the mixing chamber 111. There is a transmission member between each adjustment plate 250 and the stirring shaft 210. When the stirring shaft 210 reciprocates along its own axis, the multiple adjustment plates 250 reciprocate in the mixing chamber 111 at the same time, and the gas in the inner chamber 112 and the metal powder flow and mix between the inner chamber 112 and the multiple outer chambers 113.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal powder metallurgy mixing device, characterized in that: include: A mixing box, wherein the mixing box has a mixing chamber inside, and the mixing box is provided with a feed port and a discharge port connecting the mixing chamber and the external environment; wherein the feed port is arranged above the discharge port; A stirring shaft, the stirring shaft is coaxially arranged in the mixing chamber; a driving member is arranged on the mixing box, and the driving member is used to drive the stirring shaft to rotate; a plurality of stirring blades are arranged on the stirring shaft, the stirring shaft is hollow inside, the stirring blades are hollow inside, the inside of the stirring blades is connected with the inside of the stirring shaft, and the side wall of the stirring blade is provided with a plurality of air outlet holes connecting the mixing chamber and the inside of the stirring blade; A regulating component, which is used to regulate the gas in the mixing chamber to enter the mixing shaft when the mixing shaft rotates, and to control the gas entering the mixing shaft to return to the mixing chamber again through the gas outlet hole; A regulating tube is coaxially arranged on the inner wall of the mixing box, a regulating groove is arranged on the upper end of the regulating tube, a regulating platform is arranged on the stirring shaft, the end of the stirring shaft is inserted into the regulating tube, the regulating platform can fit with the regulating groove, and when the stirring shaft rotates, the stirring shaft can reciprocate in the direction of its own axis; The regulating assembly includes an air pipe, a regulating plate and a transmission member. The regulating plate is slidably and sealingly connected to the inner wall of the mixing box. The regulating plate can separate the mixing chamber into a relatively isolated inner chamber and an outer chamber. The air pipe can be telescopically arranged, and the air pipe connects the outer chamber with the inside of the stirring shaft. The transmission member is used to drive the regulating plate to reciprocate in the mixing box when the stirring shaft reciprocates along its own axial direction. When the volume of the inner chamber increases and the volume of the outer chamber decreases, the gas in the outer chamber can enter the inside of the stirring shaft through the air pipe. The regulating component also includes an electric control valve and an air inlet hole; there are multiple air inlet holes, and the multiple air inlet holes are arranged on the regulating plate, and the air inlet holes connect the inner cavity and the outer cavity; the electric control valve is arranged on the air pipe, and when the volume of the inner cavity increases and the volume of the outer cavity decreases, the electric control valve is in a state of conducting the air pipe.

2. A metal powder metallurgy mixing device according to claim 1, characterized in that: The transmission parts include a transmission sleeve, a transmission gear and a transmission rack. The transmission sleeve is coaxially fixed on the stirring shaft. The transmission gear is rotatably connected to the inner wall of the mixing box, and the transmission gear is always engaged with the transmission sleeve. The transmission rack is fixedly connected to the regulating plate, and the transmission rack is engaged with the transmission gear. When the stirring shaft reciprocates along its own axial direction, the regulating plate reciprocates in the mixing box.

3. A metal powder metallurgy mixing device according to claim 2, characterized in that: A speed change gear is arranged on the bracket, the speed change gear is coaxially fixedly connected with the transmission gear, the number of teeth of the speed change gear is greater than the number of teeth of the transmission gear, and the diameter of the speed change gear is greater than the diameter of the transmission gear; the transmission gear is meshed with the transmission gear sleeve, and the speed change gear is meshed with the transmission rack.

4. A metal powder metallurgy mixing device according to claim 1, characterized in that: The regulating component also includes a spoiler hole, and a plurality of spoiler holes are provided. The plurality of spoiler holes are arranged on the regulating plate, and the plurality of spoiler holes are arranged below the plurality of air inlet holes. A spoiler fan and a one-way valve are also provided in each spoiler hole. The conduction direction of the one-way valve is from the inner cavity to the outer cavity. The spoiler fan is used to start when the volume of the inner cavity increases and the volume of the outer cavity decreases, and the spoiler fan can blow air into the outer cavity.

5. A metal powder metallurgy mixing device according to claim 4, characterized in that: A control panel is provided on the mixing box, and the control panel is used to control the spoiler fan and the electric control valve simultaneously.

6. A metal powder metallurgy mixing device according to claim 1, characterized in that: A filter screen is arranged at one end of the gas delivery pipe in the outer cavity, and the filter screen can prevent metal powder from entering the gas delivery pipe.

7. A metal powder metallurgy mixing device according to claim 1, characterized in that: The driving member comprises a driving motor, which is fixedly connected to the mixing box. The driving motor has a power output shaft, which passes through the mixing box and is coaxially slidably connected with the stirring shaft.

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