Powder raw material mixing device for processing arsenic-iron alloy

Abstract

The invention discloses a powder raw material mixing device for arsenic-iron alloy processing, and relates to the technical field of mixing devices.The powder raw material mixing device comprises a shell, an inner barrel, a main shaft, spring blades and a driving mechanism, and a feeding opening is formed in the shell; the inner cylinder is rotationally arranged in the shell, the main shaft is coaxially arranged in the inner cylinder, an inner spiral groove is formed in the side wall of the main shaft, an outer spiral groove is formed in the side wall of the inner cylinder, the inner spiral groove is formed along a first spiral line, and the outer spiral groove is formed along a second spiral line; the number of the spring blades is two, and the two spring blades are arranged in the inner spiral groove and the outer spiral groove along the first spiral line and the second spiral line correspondingly. The driving mechanism is arranged in the inner barrel and used for controlling and driving the spring blades to rotate in the corresponding spiral grooves in the spiral direction of the spring blades; when the spring blades rotate, the spring blades can contract or expand. The powder raw material mixing device for arsenic-iron alloy processing, provided by the invention, has the advantage that materials can be mixed more uniformly.

Description

Technical Field

[0001] The invention relates to the technical field of mixing devices, and in particular to a powder raw material mixing device for arsenic-iron alloy processing. Background Art

[0002] Mixing devices are widely used in industrial production, and are mainly used to mix two or more substances evenly. The existing Chinese patent named "A Mixer" and the patent publication number "CN211706650U" introduces a mixer that can mix substances. The mixer mainly uses an auger to transport materials in the auger pipe. When the auger blades deliver the materials to the auger outlet, the materials can be thrown out of the outlet. After repeated several times, the thrown materials will be mixed evenly.

[0003] The above-mentioned prior art has the following problems: when the auger pushes the material to move in the auger tube, material is easily accumulated at the angle between the auger blades and the inner wall of the auger tube, which may cause uneven mixing of the raw materials. Moreover, if the mixed powder is metal powder, the metal powder may be adsorbed together due to static electricity to form metal blocks, which is not conducive to the mixing of the materials. Summary of the invention

[0004] The invention provides a powder raw material mixing device for processing arsenic-iron alloy, so as to solve the problem of uneven material mixing in the prior art.

[0005] The powder raw material mixing device for arsenic-iron alloy processing of the present invention adopts the following technical scheme: A powder raw material mixing device for processing arsenic-iron alloy comprises a shell, a main shaft, spring blades and a driving mechanism, wherein a feed port is provided on the shell; an inner cylinder is rotatably arranged in the shell, and the inner cylinder is used to receive materials entering the shell from the feed port; the main shaft is coaxially arranged in the inner cylinder, an inner spiral groove is provided on the side wall of the main shaft, and the inner spiral groove is formed along a first spiral line, and an outer spiral groove is provided on the side wall of the inner cylinder, and the outer spiral groove is formed along a second spiral line; two spring blades are provided, and the two spring blades are respectively arranged in the inner spiral groove and the outer spiral groove, the spring blade located in the inner spiral groove is arranged along the first spiral line, and the spring blade located in the outer spiral groove is arranged along the second spiral line; the driving mechanism is arranged in the inner cylinder, and the driving mechanism is used to control and drive the spring blade to rotate in the corresponding spiral groove along the spiral direction of the spring blade; wherein, when the spring blade rotates, the spring blade will contract or expand.

[0006] Furthermore, the driving mechanism includes a driving motor arranged at the end of the spring blade, both ends of the spring blade are provided with end plates, the driving motor is arranged in the inner cylinder, and the output shaft of the driving motor is connected to the end plate of the spring blade.

[0007] Furthermore, the driving motor includes an outer motor and an inner motor, the outer motor includes a first outer motor and a second outer motor arranged at both ends of the spring blades in the outer spiral groove, and the inner motor includes a first inner motor and a second inner motor arranged at both ends of the spring blades in the inner spiral groove, the first outer motor and the first inner motor are both close to the barrel mouth of the inner cylinder, the spring blades in the outer spiral groove contract or expand under the drive of the outer motor, and the spring blades in the inner spiral groove contract or expand under the drive of the inner motor.

[0008] Furthermore, an inner sliding groove is provided in the inner spiral groove, and the inner sliding groove is located at an end of the inner spiral groove away from the inner cylinder; An outer sliding groove is provided in the outer spiral groove, and the outer sliding groove is located at an end of the outer spiral groove away from the bottom of the inner cylinder; Sliding blocks are slidably arranged in both the inner sliding groove and the outer sliding groove, the first inner motor slides along the inner sliding groove through the sliding block, and the first outer motor slides along the outer sliding groove through the sliding block.

[0009] Furthermore, the inner sliding groove and the outer sliding groove are both spiral grooves, and the inner sliding groove and the outer sliding groove have the same spiral direction as the corresponding inner spiral groove and the outer spiral groove, respectively, and the length within the corresponding inner spiral groove and the outer spiral groove does not exceed the length of one circle of the corresponding spiral groove.

[0010] Furthermore, a limiting member for limiting the position of the spring blade is provided on the inner side wall of the inner cylinder and the side wall of the main shaft.

[0011] Furthermore, a discharge port is provided on the side wall of the inner cylinder, and a discharge pipe is provided on the shell, and the discharge pipe is correspondingly communicated with the discharge port.

[0012] Furthermore, a rotating platform is provided in the shell, and the inner cylinder is mounted on the rotating platform, thereby realizing a rotating connection between the inner cylinder and the shell.

[0013] Furthermore, a power motor capable of driving the inner cylinder to rotate is disposed on the shell, the power motor is installed at the bottom of the shell, and the output shaft of the power motor is connected to the bottom of the inner cylinder.

[0014] Furthermore, the shell is arranged on the ground through supporting legs.

[0015] The beneficial effects of the present invention are as follows: the powder raw material mixing device for processing arsenic-iron alloy of the present invention comprises a driving mechanism capable of controlling the rotation of spring blades arranged in the inner spiral groove and the outer spiral groove, thereby making the spring blades in the inner spiral groove and the outer spiral groove become looser or tighter; when the spring blades become looser, the radius of a single ring in the spring blades will become larger, and under the condition of controlling the spring blades to become loose cyclically, the spring blades can mix the radially distributed materials in the inner cylinder, and can cut and disperse the block materials; When the spring blades become more compressed, the number of turns of the spring blades increases, the pitch decreases, and the radius of a single ring decreases. In extreme cases, when the spring blades are fully compressed, a structure similar to an auger is formed. At this time, as the inner cylinder rotates, the spring blades similar to the auger can mix the materials parallel to the axis of the inner cylinder, thereby achieving dual mixing of the materials falling into the inner cylinder in the axial and radial directions of the inner cylinder, which can make the materials mixed more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 A schematic structural diagram of a powder raw material mixing device for arsenic-iron alloy processing provided by an embodiment of the present invention; Figure 2 A schematic side view of the structure of a powder raw material mixing device for arsenic-iron alloy processing provided by an embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-section structure in the AA direction; Figure 4 A schematic diagram of the side structure of an inner cylinder in a powder raw material mixing device for processing ferroarsenic alloy provided by an embodiment of the present invention; Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure in the middle BB direction; Figure 6 A top view of an inner cylinder in a powder raw material mixing device for processing ferroarsenic alloy provided by an embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure in the CC direction; Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the D part; Fig. 9 A schematic structural diagram of a single inner cylinder in a powder raw material mixing device for arsenic-iron alloy processing provided in an embodiment of the present invention.

[0018] In the figure: 100, shell; 110, feed port; 120, sliding block; 130, discharge pipe; 140, support leg; 150, power motor; 200, inner cylinder; 210, outer spiral groove; 211, outer sliding groove; 220, discharge port; 300, main shaft; 310, inner spiral groove; 311, inner sliding groove; 400, spring blade; 511, outer motor; 5111, first outer motor; 5112, second outer motor; 512, inner motor; 5121, first inner motor; 5122, second inner motor; 600, limiter. DETAILED DESCRIPTION

[0019] 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.

[0020] 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 the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship 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.

[0021] 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.

[0022] like Figures 1 to 9 As shown, an embodiment of the present invention provides a powder raw material mixing device for arsenic-iron alloy processing, which includes a shell 100, an inner cylinder 200, a main shaft 300, a spring blade 400 and a driving mechanism.

[0023] The housing 100 is provided with a feed port 110, and the inner cylinder 200 is rotatably disposed in the housing 100, and the inner cylinder 200 is used to receive the material entering the housing 100 from the feed port 110. An inner spiral groove 310 is disposed on the side wall of the main shaft 300, and an outer spiral groove 210 is disposed on the side wall of the inner cylinder 200, and the spiral direction of the inner spiral groove 310 is opposite to that of the outer spiral groove 210; the spring blade 400 is disposed in the inner spiral groove 310 and the outer spiral groove 210; the driving mechanism is disposed in the inner cylinder 200, and the driving mechanism is used to drive the spring blade 400 to rotate; wherein, when the spring blade 400 rotates, the spring blade 400 will contract or expand.

[0024] Specifically, the shell 100 may be a metal shell 100 set on the ground by legs, and a feed port 110 is provided on the top of the shell 100, and the material to be mixed can enter the shell 100 through the feed port 110. The inner cylinder 200 may be a metal cylinder without a cover. The inner cylinder 200 is rotatably set in the shell 100, and the inner cylinder 200 can be used to receive the material poured into the shell 100 from the feed port 110, and the material transported from the feed port 110 of the shell 100 will fall into the inner cylinder 200. The main shaft 300 is set at the bottom of the inner cylinder 200, and the main shaft 300 is coaxially arranged with the inner cylinder 200, and the main shaft 300 and the inner cylinder 200 can be integrally formed.

[0025] The inner spiral groove 310 is provided on the side wall of the main shaft 300, and the outer spiral groove 210 is provided on the inner side wall of the inner cylinder 200. The inner spiral groove 310 is formed along the first spiral line, and the outer spiral groove 210 is formed along the second spiral line. The first spiral line and the second spiral line are both spiral lines similar to cylindrical springs, and the spiral directions of the first spiral line and the second spiral line can be left-handed or right-handed. The first spiral line is arranged on the inner side wall of the inner cylinder 200, and the second spiral line is arranged on the side of the main shaft 300. There are two spring blades 400, and the two spring blades 400 are respectively arranged in the inner spiral groove 310 and the outer spiral groove 210, and the two spring blades 400 are respectively arranged along the corresponding first spiral line and the second spiral line. The spring blade 400 can be a single-ring sheet-shaped spring, which can be a left-handed spring or a right-handed spring, and the spring blade 400 can be attached to the groove wall of the inner spiral groove 310 and the outer spiral groove 210. End plates are fixed at both ends of the spring blade 400. The driving mechanism can drive the spring blade 400 to rotate along the spiral direction of the spring blade 400 through the end plate.

[0026] Similar to a spring, by rotating the two ends of the spring along the spiral direction of the spring, the spring either contracts and becomes tighter, or expands and becomes looser. By rotating the two ends of the spring blade 400, the spring blade 400 either contracts and becomes tighter, or expands and becomes looser. The driving mechanism is used to drive the rotation of the spring blade 400, so that the spring blade 400 contracts more tightly or expands more loosely.

[0027] The operating principle of this embodiment is: The driving mechanism can control the rotation of the spring blades 400 set in the inner spiral groove 310 and the outer spiral groove 210, thereby making the spring blades 400 in the inner spiral groove 310 and the outer spiral groove 210 looser or more compact. When the spring blades 400 in the inner spiral groove 310 and the outer spiral groove 210 become looser, the number of turns of the spring blades 400 will decrease, the pitch will increase, and the radius of a single ring will increase. When the spring blades 400 are controlled by the driving mechanism to cyclically loosen or restore to their original state, the radius of the spring blades 400 will increase or decrease. The spring blades 400 with increasing or decreasing radius can mix the radially distributed materials in the inner cylinder 200, and can also radially cut some mixed blocks, such as mixed blocks formed by static electricity adsorption, to disperse the mixed blocks, thereby enabling the materials to be mixed more fully. When the spring blades 400 in the inner spiral groove 310 and the outer spiral groove 210 become more compressed, the number of turns of the spring blades 400 will increase, the pitch will decrease, and the radius of a single ring will decrease. In extreme cases, when the spring blades 400 are fully compressed, the spring blades 400 will form a structure similar to an auger. At this time, as the inner cylinder 200 rotates, the spring blades 400 similar to an auger can mix the materials parallel to the axial direction of the inner cylinder 200, thereby achieving dual mixing of the materials falling into the inner cylinder 200 in the axial and radial directions of the inner cylinder 200, which can make the materials mixed more evenly.

[0028] In some embodiments, the driving mechanism includes a driving motor arranged on an end plate at the end of the spring blade 400, the driving motor is installed in the inner cylinder 200, and the output shaft of the driving motor is connected to the end plate of the spring blade 400, so that the driving motor can drive the corresponding spring blade 400 to rotate during operation.

[0029] Further, the driving motor includes an outer motor 511 and an inner motor 512 , wherein the outer motor 511 corresponds to the spring blade 400 disposed on the inner cylinder 200 , and the inner motor 512 corresponds to the spring blade 400 disposed on the main shaft 300 .

[0030] The outer motor 511 includes a first outer motor 5111 and a second outer motor 5112, both of which are arranged in the inner cylinder 200, the first outer motor 5111 can be installed on the inner cylinder 200 wall of the inner cylinder 200 through a plate and close to the top of the inner cylinder 200, the second outer motor 5112 can be installed on the cylinder wall of the inner cylinder 200 through a plate and close to the cylinder bottom of the inner cylinder 200, and the first outer motor 5111 is close to the cylinder mouth of the inner cylinder 200. The two end plates of the spring blade 400 arranged in the outer spiral groove 210 are respectively connected to the output shaft of the first outer motor 5111 and the output shaft of the second outer motor 5112. The contraction or loosening state of the spring blade 400 can be changed by controlling the rotation direction of the first outer motor 5111 and the second outer motor 5112.

[0031] Similarly, the inner motor 512 includes a first inner motor 5121 and a second inner motor 5122, both of which are arranged in the inner cylinder 200, wherein the first inner motor 5121 can be installed on the main shaft 300 through a plate and close to the end of the main shaft 300, and the second inner motor 5122 can be installed on the main shaft 300 through a plate and close to the bottom of the inner cylinder 200. The two end plates of the spring blade 400 arranged in the inner spiral groove 310 are respectively connected to the output shafts of the first inner motor 5121 and the second inner motor 5122. By controlling the rotation direction of the first inner motor 5121 and the second inner motor 5122, the corresponding spring blade 400 is changed to shrink or loosen, and by controlling the rotation speed of the first inner motor 5121 and the second inner motor 5122, the speed of shrinkage or loosening of the corresponding spring blade 400 is controlled.

[0032] When the first outer motor 5111 and the second outer motor 5112 control the corresponding spring blades 400 to loosen and the first inner motor 5121 and the second inner motor 5122 control the corresponding spring blades 400 to loosen, there will be an overlapping area between the spring blades 400 arranged on the side wall of the inner cylinder 200 and the spring blades 400 on the main shaft 300. With the cyclic rotation of the motors (the first outer motor 5111, the second outer motor 5112, the first inner motor 5121, and the second inner motor 5122), the material moved to the overlapping area can be broken up in the radial direction of the inner cylinder 200, and even if there are metal blocks formed by electrostatic adsorption, they will be broken up under the radial movement of the two spring blades 400, so that the material mixing is more uniform.

[0033] When the first outer motor 5111 and the second outer motor 5112 control the corresponding spring blade 400 to tighten and the first inner motor 5121 and the second inner motor 5122 control the corresponding spring blade 400 to tighten, the pitch of the spring blade 400 will become very small. At this time, the spring blade 400 set on the side wall of the inner cylinder 200 can be regarded as an auger. When the inner cylinder 200 rotates, the material will move along the axial direction of the inner cylinder 200 on the spring blade 400, so that the material can be mixed in the axial direction. Since the spring blade 400 is not an auger after all, when it drives the material to move in the axial direction of the inner cylinder 200, there is always a large gap between the spring blade 400 and the inner wall of the inner cylinder 200, and the material can fall from the gap. Moreover, since the rotation of the two spring blades 400 is cyclically changing, the gap between the elastic blade and the inner wall of the inner cylinder 200 is also constantly changing. The constantly changing gap is difficult to effectively gather materials, so that more materials participate in mixing.

[0034] In addition, the first outer motor 5111, the second outer motor 5112, the first inner motor 5121 and the second inner motor 5122 can all be servo motors or stepper motors. The servo motors and stepper motors are more controllable, and the staff can more easily adjust and control the operation of each motor.

[0035] In summary, in this embodiment, the powder raw material mixing device for arsenic-iron alloy processing provided by the present invention can mix materials in both the axial and radial directions of the inner cylinder 200, and can also break up metal materials adsorbed together due to static electricity, so as to achieve a better mixing effect of the materials.

[0036] In some embodiments, an inner sliding groove 311 is defined in the inner spiral groove 310, and the inner sliding groove 311 is located at one end of the inner spiral groove 310 away from the inner cylinder 200; an outer sliding groove 211 is defined in the outer spiral groove 210, and the outer sliding groove 211 is located at one end of the outer spiral groove 210 away from the bottom of the inner cylinder 200.

[0037] The inner sliding groove 311 and the outer sliding groove 211 are both spiral grooves, and the length of the inner sliding groove 311 and the outer sliding groove 211 in the corresponding inner spiral groove 310 and the outer spiral groove 210 does not exceed the length of one circle of the corresponding spiral groove. The length of the inner sliding groove 311 and the outer sliding groove 211 is limited to prevent the first outer motor 5111 and the first inner motor 5121 from sliding too far in the corresponding sliding groove, so as to avoid adverse effects on the spring blade 400.

[0038] The driving motors near the mouth of the inner cylinder 200, i.e., the first outer motor 5111 and the first inner motor 5121, are slidably arranged on the corresponding inner sliding groove 311 and the outer sliding groove 211 through the sliding block 120. Specifically, the first outer motor 5111 and the first inner motor 5121 are respectively mounted on two sliding blocks 120, the sliding block 120 on the first outer motor 5111 is slidably arranged in the inner sliding groove 311, and the sliding block 120 on the first inner motor 5121 is slidably arranged in the outer sliding groove 211.

[0039] When the first outer motor 5111 and the second outer motor 5112 drive the corresponding spring blade 400 to rotate, if the spring blade 400 is contracted, the two adjacent single rings on the spring blade 400 become closer, the length of the spring blade 400 will become shorter, and the first outer motor 5111 moves in the inner sliding groove 311 to the side close to the bottom of the inner cylinder 200. Then, the materials falling on the spring blade 400 can be mixed in the axial direction of the inner cylinder 200. If the spring blade 400 is relaxed, the distance between the two adjacent single rings on the spring blade 400 will become larger, the spring blade 400 will become more sparse, and the radius of the single ring will become larger. At this time, the first outer motor 5111 moves on the inner sliding groove 311 in the direction away from the bottom of the inner cylinder 200, and the spring blade 400 with a larger radius can mix the materials in the radial direction of the inner cylinder 200.

[0040] When the first inner motor 5121 and the second inner motor 5122 are contracting the corresponding spring blade 400, the spacing between the two single rings of the corresponding spring blade 400 becomes smaller, and at this time, the sliding block 120 on the first inner motor 5121 can slide in the direction close to the bottom of the inner cylinder 200, and then the materials falling on the spring blade 400 can be axially mixed. When the first inner motor 5121 and the second inner motor 5122 are loosening the corresponding spring blade 400, the distance between the two adjacent single rings on the spring blade 400 will increase, and the radius of the single ring will increase. The spring blade 400 with an increased radius can radially mix the materials falling thereon, and if the radius of the spring blade 400 in the inner spiral groove 310 and the outer spiral groove 210 is increased, an overlapping area will be generated between the two spring blades 400, and the spring blade 400 in the overlapping area can break up the mixed block formed by magnetic adsorption or electrostatic adsorption.

[0041] It should be noted that, in the present invention, the driving mechanism can drive the spring blade 400 to rotate, so that the spring blade 400 contracts or loosens, and repeats the contraction and loosening. The material falling on the spring blade 400 can slide off the spring blade 400 under the cycle of contraction and loosening of the spring blade 400, and can be fully mixed with the material in the inner cylinder 200.

[0042] In some embodiments, a limiting member 600 for limiting the position of the spring blade 400 is disposed on the inner side wall of the inner cylinder 200 and the side wall of the main shaft 300 .

[0043] Specifically, the stopper 600 may be a semicircular metal part, and a plurality of stoppers 600 are provided, and the plurality of stoppers 600 are evenly distributed along the groove bottoms of the outer spiral groove 210 and the inner spiral groove 310 on the inner side wall of the inner cylinder 200 and the side wall of the main shaft 300. The stopper 600 can not only limit the spring blade 400 in the inner spiral groove 310 or the outer spiral groove 210, but also limit the movement of the spring blade 400 in the corresponding groove body.

[0044] A discharge port 220 is provided on the outer wall of the inner cylinder 200, and a discharge pipe 130 is installed on the shell 100. The discharge pipe 130 is correspondingly connected to the discharge port 220. The material mixed in the inner cylinder 200 can enter the discharge pipe 130 from the discharge port 220 and finally be discharged from the shell 100.

[0045] In some embodiments, a rotating platform is provided in the shell 100, and the rotating platform can be similar to the structure of a thrust ball bearing, similar to opening a plurality of evenly distributed hemispherical grooves on the annular surface of an annular plate around the center of the annular plate, and setting balls in the ball grooves, and then opening corresponding hemispherical grooves on another annular plate, and then stacking the two annular plates with the sides of the hemispherical grooves facing each other, to form a rotatable platform. Of course, the balls can also be rolling parts such as rollers.

[0046] The housing 100 is set on the ground through the support legs 140. Multiple support legs 140 can be set, and multiple support legs 140 are evenly distributed at the bottom of the housing 100, which can provide stable support for the housing 100. A power motor 150 is installed at the bottom of the housing 100, and the inner cylinder 200 is installed on the rotating platform. A clamping groove is provided on the bottom surface of the inner cylinder 200, and a clamping block is provided on the output shaft of the power motor 150. The clamping block on the output shaft of the power motor 150 can be inserted into the clamping groove, thereby realizing the clamping of the power motor 150 and the inner cylinder 200. When the power motor 150 is running, the inner cylinder 200 can rotate synchronously with the output shaft of the power motor 150.

[0047] 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 powder raw material mixing device for arsenic-iron alloy processing, characterized in that: include: A shell (100), wherein a feed port (110) is provided on the shell (100); an inner cylinder (200), the inner cylinder (200) being rotatably disposed in the shell (100), the inner cylinder (200) being used to receive materials entering the shell (100) from the feed port (110); A main shaft (300), the main shaft (300) being coaxially arranged in the inner cylinder (200), an inner spiral groove (310) being provided on a side wall of the main shaft (300), the inner spiral groove (310) being formed along a first spiral line, and an outer spiral groove (210) being provided on a side wall of the inner cylinder (200), the outer spiral groove (210) being formed along a second spiral line; A spring blade (400), wherein two spring blades (400) are provided, and the two spring blades (400) are respectively arranged in the inner spiral groove (310) and the outer spiral groove (210), the spring blade (400) located in the inner spiral groove (310) is arranged along the first spiral line, and the spring blade (400) located in the outer spiral groove (210) is arranged along the second spiral line; A driving mechanism, the driving mechanism being arranged in the inner cylinder (200), the driving mechanism being used to control and drive the spring blade (400) to rotate in the corresponding spiral groove along the spiral direction of the spring blade (400); When the spring blade (400) rotates, the spring blade (400) will contract or expand.

2. The powder raw material mixing device for ferroarsenic alloy processing according to claim 1, characterized in that: The driving mechanism comprises a driving motor arranged at the end of the spring blade (400), both ends of the spring blade (400) are provided with end plates, the driving motor is arranged in the inner cylinder (200), and the output shaft of the driving motor is connected to the end plate of the spring blade (400).

3. The powder raw material mixing device for arsenic-iron alloy processing according to claim 2, characterized in that: The driving motor comprises an outer motor (511) and an inner motor (512); the outer motor (511) comprises a first outer motor (5111) and a second outer motor (5112) arranged at two ends of the spring blade (400) in the outer spiral groove (210); the inner motor (512) comprises a first inner motor (5121) and a second inner motor (5122) arranged at two ends of the spring blade (400) in the inner spiral groove (310); the first outer motor (5111) and the first inner motor (5121) are both close to the barrel mouth of the inner barrel (200); the spring blade (400) in the outer spiral groove (210) contracts or expands under the drive of the outer motor (511); and the spring blade (400) in the inner spiral groove (310) contracts or expands under the drive of the inner motor (512).

4. The powder raw material mixing device for arsenic-iron alloy processing according to claim 3 is characterized in that: An inner sliding groove (311) is provided in the inner spiral groove (310), and the inner sliding groove (311) is located at an end of the inner spiral groove (310) away from the inner cylinder (200); An outer sliding groove (211) is provided in the outer spiral groove (210), and the outer sliding groove (211) is located at an end of the outer spiral groove (210) away from the bottom of the inner cylinder (200); A sliding block (120) is slidably arranged in both the inner sliding groove (311) and the outer sliding groove (211); the first inner motor (5121) slides along the inner sliding groove (311) through the sliding block (120); and the first outer motor (5111) slides along the outer sliding groove (211) through the sliding block (120).

5. The powder raw material mixing device for processing ferroarsenic alloy according to claim 4, characterized in that: The inner sliding groove (311) and the outer sliding groove (211) are both spiral grooves. The inner sliding groove (311) and the outer sliding groove (211) have the same spiral direction as the corresponding inner spiral groove (310) and the corresponding outer spiral groove (210), and the length of the inner sliding groove (310) and the outer spiral groove (210) does not exceed the length of one circle of the corresponding spiral groove.

6. A powder raw material mixing device for ferroarsenic alloy processing according to any one of claims 1 to 5, characterized in that: A limiting member (600) for limiting the position of the spring blade (400) is provided on the inner side wall of the inner cylinder (200) and the side wall of the main shaft (300).

7. The powder raw material mixing device for processing ferroarsenic alloy according to claim 6, characterized in that: A discharge port (220) is provided on the side wall of the inner cylinder (200), and a discharge pipe (130) is provided on the shell (100), and the discharge pipe (130) is correspondingly communicated with the discharge port (220).

8. The powder raw material mixing device for ferroarsenic alloy processing according to claim 7, characterized in that: A rotating platform is provided inside the shell (100), and the inner cylinder (200) is mounted on the rotating platform, thereby achieving a rotating connection between the inner cylinder (200) and the shell (100).

9. The powder raw material mixing device for processing ferroarsenic alloy according to claim 8, characterized in that: The shell (100) is provided with a power motor (150) capable of driving the inner cylinder (200) to rotate. The power motor (150) is installed at the bottom of the shell (100), and the output shaft of the power motor (150) is connected to the bottom of the inner cylinder (200).

10. The powder raw material mixing device for processing ferroarsenic alloy according to claim 9, characterized in that: The housing (100) is arranged on the ground via supporting legs (140).

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