Powder selecting fineness control device for powder selecting machine

Abstract

The utility model discloses a powder selecting fineness control device for a powder selecting machine, which comprises a main shaft and a rotating seat mounted at the bottom end of the main shaft, a rotating chamber is positioned in the rotating seat and communicated with the bottom end of the rotating seat, a plurality of powder selecting blades are circumferentially distributed at the side end of the rotating seat and extend into the rotating chamber, and a turntable is positioned in the rotating chamber and communicated with the rotating chamber. Rotating rods with the same number as the powder selecting blades are circumferentially installed on the rotating disc, the ends, away from the rotating disc, of the rotating rods are hinged to the powder selecting blades, and the self-locking type driving assembly is installed in the rotating chamber and connected with the rotating disc.

Description

Technical Field

[0001] The utility model relates to the technical field of powder classifiers, in particular to a powder classifier fineness control device. Background Art

[0002] Chinese patent CN212821122 U discloses a powder selection fineness control system for an ultrafine powder selection machine, including a powder selection impeller device, the powder selection impeller device having a main shaft, a driving motor for driving the main shaft to rotate, a hub connected to the lower end of the main shaft, and a plurality of powder selection blades connected to the outer edge of the hub, a plurality of mounting holes corresponding to the plurality of powder selection blades are opened on the outer edge of the hub, and any mounting hole is distributed along the radial direction of the hub, all powder selection blades are respectively plugged and installed in the corresponding mounting holes and can slide synchronously along the length direction of their respective corresponding mounting holes under the action of the control mechanism, so that all powder selection blades can slide synchronously outward to increase the wheel width of the impeller system or slide synchronously inward to reduce the wheel width of the impeller system. And in the

[0024] paragraph of the specification, it is disclosed that "the matching blocks 9 on all powder selection blades 11 are pressed tightly against the small end of the control handle 8 under the elastic force of the spring 10, and the powder selection blades 11 are in a contracted state to achieve a smaller wheel width; in Figure 2 In the state shown, the control element 1 controls the core shaft 5 to descend, and the matching blocks 9 on all the powder selecting blades 11 overcome the elastic force of the spring 10 and slide along the conical surface of the control handle 8 to the large end of the control handle 8, and the powder selecting blades 11 are in an extended state, reaching a larger wheel width. When the main shaft drives the hub to rotate, the faster the speed, the greater the centrifugal force of the powder selecting blades 11. The centrifugal force will overcome the elastic force of the spring 10, so that the powder selecting blades 11 are set in an extended state, although the extension amplitude of the powder selecting blades 11 may be small, so that the larger wheel width state of the powder selecting blades 11 cannot be accurately controlled. Utility Model Content

[0003] In order to improve the above-mentioned problems, the utility model discloses a powder selection fineness control device for a powder selection machine, comprising a main shaft and a rotating seat installed at the bottom end of the main shaft, a rotating chamber is located in the rotating seat and is connected to the bottom end of the rotating seat, a plurality of powder selection blades are circumferentially distributed at the side ends of the rotating seat and extend into the rotating chamber, a turntable is located in the rotating chamber, and a number of rotating rods equal to the number of powder selection blades are circumferentially installed on the turntable, the rotating rods are hinged to the powder selection blades away from the turntable end, and a self-locking drive assembly is installed in the rotating chamber and connected to the turntable.

[0004] Preferably, the number of powder selection blades is at least six.

[0005] Preferably, the self-locking drive assembly comprises:

[0006] A driving chamber, which is located in the rotating seat and is connected to the rotating chamber;

[0007] A central shaft, the top end of which is rotatably mounted in the driving chamber, the bottom end of which extends into the rotating chamber, and a turntable is mounted on the central shaft;

[0008] The groove wheel is installed on the central shaft, and four arc-shaped transmission grooves and four toggle grooves are opened circumferentially on the groove wheel, and the arc-shaped transmission grooves and toggle grooves are alternately distributed on the groove wheel;

[0009] A fixed plate, a rotating block with an avoidance notch is installed on the fixed plate, a lever is installed on the fixed plate and is arranged close to the avoidance notch, the rotating block is slidably connected in the arc-shaped transmission groove, and the lever is slidably connected in the toggle groove, and the avoidance notch is used to avoid the groove wheel being arranged close to the toggle groove end;

[0010] The driving motor is installed in the driving chamber, and the fixing plate is installed at the output end of the driving motor.

[0011] Preferably, the four toggle grooves are distributed in a cross shape.

[0012] Preferably, the groove wheel is attached to the fixed plate close to the end of the rotating block.

[0013] Preferably, the number of powder selection blades is an even number.

[0014] Preferably, a channel connected to the rotating chamber is opened at the side end of the rotating seat, and the powder selection blade is arranged through the channel near the end of the rotating rod.

[0015] Preferably, the length of the powder selection blade is greater than the length of the rotating rod, and the powder selection blade is bent and arranged in a downwardly inclined manner away from the end of the rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the rotating seat of the utility model;

[0019] Figure 3 It is a schematic diagram of the transmission of the sheave and fixed plate of the utility model;

[0020] Figure 4 This is a schematic diagram of the large wheel width state of the powder selection blade of the utility model;

[0021] Figure 5It is a schematic diagram of the small wheel width state of the powder selection blade of the utility model.

[0022] In the figure: 1. main shaft; 2. rotating seat; 3. rotating chamber; 4. powder selection blade; 5. rotating disk; 6. rotating rod; 7. self-locking driving assembly; 8. driving chamber; 9. central axis; 10. groove wheel; 11. arc-shaped transmission groove; 12. toggle groove; 13. fixed plate; 14. avoidance gap; 15. rotating block; 16. toggle rod; 17. driving motor; 18. through-channel. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the present embodiment provides a powder selection fineness control device for a powder selection machine, comprising a main shaft 1 and a rotating seat 2 installed at the bottom end of the main shaft 1, a rotating chamber 3 located in the rotating seat 2 and connected to the bottom end of the rotating seat 2, a plurality of powder selection blades 4 circumferentially distributed at the side ends of the rotating seat 2 and extending into the rotating chamber 3, a turntable 5 located in the rotating chamber 3, a number of rotating rods 6 equal to the number of powder selection blades 4 circumferentially installed on the turntable 5, the rotating rods 6 are hinged to the powder selection blades 4 away from the turntable 5 end, a self-locking drive assembly 7 is installed in the rotating chamber 3 and connected to the turntable 5.

[0027] The working principle and beneficial effects of the above technical solution are:

[0028] The utility model provides a powder selection fineness control device for a powder selection machine. The self-locking drive component 7 drives the turntable 5 located in the rotating chamber 3 to rotate. The turntable 5 drives the powder selection blade 4 to perform telescopic movement through the rotating rod 6 installed thereon. When the rotating rod 6 gradually points to the center end of the turntable 5, the powder selection blade 4 is in an extended state, reaching a larger wheel width. Then the powder selection fineness is changed. When the main shaft 1 rotates and drives the rotating seat 2 installed thereon to rotate, due to the self-locking effect of the self-locking drive component 7, the centrifugal force of the powder selection blade 4 cannot drive it to move, thereby realizing the precise control of the extension length of the powder selection blade 4.

[0029] In one embodiment, the number of the powder selecting blades 4 is at least six.

[0030] In one embodiment, the self-locking drive assembly 7 comprises:

[0031] A driving chamber 8, the driving chamber 8 is located in the rotating seat 2 and is connected to the rotating chamber 3;

[0032] A central shaft 9, the top end of which is rotatably mounted in the driving chamber 8, the bottom end of which extends into the rotating chamber 3, and the turntable 5 is mounted on the central shaft 9;

[0033] The groove wheel 10 is installed on the central shaft 9. Four arc-shaped transmission grooves 11 and four toggle grooves 12 are opened circumferentially on the groove wheel 10, and the arc-shaped transmission grooves 11 and the toggle grooves 12 are alternately distributed on the groove wheel 10;

[0034] A fixed plate 13 is provided with a rotating block 15 with an avoidance notch 14, a lever 16 is provided on the fixed plate 13 and is arranged close to the avoidance notch 14, the rotating block 15 is slidably connected in the arc-shaped transmission groove 11, and the lever 16 is slidably connected in the toggle groove 12, and the avoidance notch 14 is used to avoid the groove wheel 10 being arranged close to the toggle groove 12 end;

[0035] The driving motor 17 is installed in the driving chamber 8 , and the fixing plate 13 is installed at the output end of the driving motor 17 .

[0036] The working principle and beneficial effects of the above technical solution are:

[0037] The driving motor 17 located in the driving chamber 8 works, thereby driving the fixed disk 13 installed at the output end of the driving motor 17 to rotate. When the fixed disk 13 rotates one circle, the lever 16 on the fixed disk 13 slides into one of the toggle grooves 12, thereby driving the groove wheel 10 to rotate 90°, and after the lever 16 is separated from the toggle groove 12, the rotating block 15 slides in the arc transmission groove 11, so that the groove wheel 10 cannot move, and the groove wheel 10 drives the turntable 5 coaxially installed on the central shaft 9 to rotate 90°, and the turntable 5 drives the powder selection blade 4 to perform telescopic movement through the rotating rod 6 installed thereon. And every time the groove wheel 10 rotates one circle, the powder selection blade 4 is extended and retracted by a certain length. In this way, the precise control of the telescopic length of the powder selection blade 4 is achieved.

[0038] When the lever 16 is disengaged from the toggle groove 12, the rotating block 15 is in the arc-shaped transmission groove 11. At this time, when the main shaft 1 drives the rotating seat 2 to rotate, because the rotating block 15 is in the arc-shaped transmission groove 11, the groove wheel 10 cannot move, and the turntable 5 coaxially installed on the central shaft 9 with the groove wheel 10 cannot move. The centrifugal force generated by the rotation of the powder selection blade 4 cannot drive the turntable 5 to rotate through the rotating rod 6. In this way, the influence of the centrifugal force of the powder selection blade 4 on the telescopic length of the powder selection blade 4 can be eliminated.

[0039] In one embodiment, the four toggle slots 12 are distributed in a cross shape.

[0040] In one embodiment, the sheave 10 is attached to the end of the fixed plate 13 close to the rotating block 15 .

[0041] In one embodiment, the number of the powder selecting blades 4 is an even number.

[0042] In one embodiment, a channel 18 communicating with the rotating chamber 3 is opened at the side end of the rotating seat 2, and the powder selection blade 4 is provided with the channel 18 near the end of the rotating rod 6.

[0043] In one embodiment, the length of the powder selecting blade 4 is greater than the length of the rotating rod 6 , and the end of the powder selecting blade 4 away from the rotating rod 6 is bent in a downwardly inclined manner.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A powder selection fineness control device for a powder selection machine, characterized in that: The invention comprises a main shaft (1) and a rotating seat (2) mounted on the bottom end of the main shaft (1); a rotating chamber (3) is located in the rotating seat (2) and is connected to the bottom end of the rotating seat (2); a plurality of powder selection blades (4) are circumferentially distributed on the side ends of the rotating seat (2) and extend into the rotating chamber (3); a rotating disk (5) is located in the rotating chamber (3); a rotating rod (6) having the same number as the powder selection blades (4) is circumferentially mounted on the rotating disk (5); the rotating rod (6) is hinged to the powder selection blades (4) at the end away from the rotating disk (5); and a self-locking drive assembly (7) is installed in the rotating chamber (3) and is connected to the rotating disk (5).

2. A powder selection fineness control device for a powder selection machine according to claim 1, characterized in that: The number of the powder selection blades (4) is at least six.

3. A powder selection fineness control device for a powder selection machine according to claim 1, characterized in that: The self-locking drive assembly (7) comprises: a drive chamber (8) located in a rotating seat (2), the drive chamber (8) being connected to a rotating chamber (3), the top end of a central shaft (9) being rotatably mounted in the drive chamber (8), the bottom end of the central shaft (9) extending into the rotating chamber (3), a turntable (5) being mounted on the central shaft (9), a groove wheel (10) being mounted on the central shaft (9), four arc-shaped transmission grooves (11) and four toggle grooves (12) being circumferentially formed on the groove wheel (10), and the arc-shaped transmission grooves (11) and the toggle grooves (12) being alternately distributed in the groove The invention relates to a wheel (10), a rotating block (15) with an avoidance notch (14) is installed on a fixed plate (13), a lever (16) is installed on the fixed plate (13) and is arranged close to the avoidance notch (14), the rotating block (15) is slidably connected in an arc-shaped transmission groove (11), and the lever (16) is slidably connected in a toggle groove (12), the avoidance notch (14) is used to avoid the groove wheel (10) being arranged close to the toggle groove (12), a driving motor (17) is installed in a driving chamber (8), and the fixed plate (13) is installed at the output end of the driving motor (17).

4. A powder selection fineness control device for a powder selection machine according to claim 3, characterized in that: The four toggle grooves (12) are distributed in a cross shape.

5. The powder fineness control device for a powder classifier according to claim 3, characterized in that: The groove wheel (10) is attached to the end of the fixed plate (13) close to the rotating block (15).

6. A powder selection fineness control device for a powder selection machine according to claim 1, characterized in that: The number of the powder selection blades (4) is an even number.

7. The powder fineness control device for a powder classifier according to claim 1, characterized in that: A channel (18) communicating with the rotating chamber (3) is provided at the side end of the rotating seat (2), and the powder selection blade (4) is provided near the end of the rotating rod (6) through the channel (18).

8. The powder fineness control device for a powder classifier according to claim 1, characterized in that: The length of the powder selection blade (4) is greater than the length of the rotating rod (6), and the end of the powder selection blade (4) away from the rotating rod (6) is bent in a downwardly inclined manner.

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