Powder mixer

Abstract

The utility model provides a powder mixer which comprises a vertical cylinder, an inner cylinder with the top extending out of the vertical cylinder is arranged on the inner side of the vertical cylinder, a sealing ring is fixed between the outer wall of the inner cylinder and the inner wall of the vertical cylinder, the inner cylinder is communicated with a feeding pipe, a stirring paddle is arranged in the inner cylinder, and a motor used for driving the stirring paddle to rotate is arranged on the inner cylinder. The bottom of the inner cylinder is communicated with a discharge pipe penetrating through the vertical cylinder; a through hole is formed in the bottom of the inner cylinder, a moving ring with the top making contact with the bottom of the inner cylinder is arranged in the vertical cylinder, a cover cylinder is fixed to the bottom of the moving ring, and an electric telescopic rod used for driving the moving ring to ascend and descend is arranged in the vertical cylinder; a lifting ring of which the inner ring surface is in contact with the outer wall of the cover cylinder is arranged in the vertical cylinder. According to the utility model, the positions of diamond powder and metal powder accumulated below can be effectively changed, so that the diamond powder and the metal powder can be fully mixed, the mixing efficiency of the diamond powder and the metal powder is improved, and the quality of the produced diamond grinding wheel is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mixers, in particular to a powder mixer. Background Art

[0002] When producing diamond grinding wheels, a mixer is needed to mix diamond powder and metal powder together. After that, the mixture obtained by mixing diamond powder and metal powder is cold-pressed, sintered, and hot-pressed, and then undergoes finish machining and grooving to complete the production of diamond grinding wheels. However, when the current mixers are in use, some diamond powder or metal powder will accumulate at the bottom of the mixer and cannot be fully stirred and mixed, easily resulting in incomplete mixing of diamond powder and metal powder, which affects the quality of the subsequent produced diamond grinding wheels. Content of the Utility Model

[0003] The utility model discloses a powder mixer, which solves the problem that the diamond powder and metal powder accumulated at the bottom of the mixer cannot be fully stirred and mixed, resulting in incomplete mixing of diamond powder and metal powder.

[0004] To solve the above technical problems, the utility model specifically adopts the following technical solutions:

[0005] A powder mixer includes a vertical cylinder. An inner cylinder with its top extending outside the vertical cylinder is arranged inside the vertical cylinder. A sealing ring is fixed between the outer wall of the inner cylinder and the inner wall of the vertical cylinder. A feed pipe is communicated with the inner cylinder. A stirring paddle is arranged inside the inner cylinder. A motor for driving the stirring paddle to rotate is arranged on the inner cylinder. A discharge pipe passing through the vertical cylinder is communicated with the bottom of the inner cylinder. A through hole is opened at the bottom of the inner cylinder. A moving ring with its top contacting the bottom of the inner cylinder is arranged inside the vertical cylinder. A cover cylinder is fixed to the bottom of the moving ring. An electric telescopic rod for driving the moving ring to lift and lower is arranged inside the vertical cylinder. A lifting ring with its inner ring surface contacting the outer wall of the cover cylinder is arranged inside the vertical cylinder. The outer ring surface of the lifting ring contacts the inner wall of the vertical cylinder. A first automatic telescopic rod for driving the lifting ring to lift and lower is arranged on the vertical cylinder. A feed hole is opened on the inner cylinder near the top of the vertical cylinder.

[0006] Compared with the prior art, the utility model has the following beneficial effects:

[0007] After the diamond powder and metal powder are put into the interior of the inner cylinder through the feed pipe, the motor can be started to drive the stirring paddle to rotate, stirring the diamond powder and metal powder inside the inner cylinder to mix the diamond powder and metal powder; at the same time, the electric telescopic rod can be started to move the moving ring downward, no longer blocking the perforation at the bottom of the inner cylinder. The diamond powder and metal powder located below the interior of the inner cylinder can then be discharged through the perforation to the top of the moving ring, and then slide downward from the top of the moving ring to the top of the lifting ring. The cover cylinder can block the diamond powder and metal powder; then the moving ring is restored to continue sealing the perforation at the bottom of the inner cylinder, and then the first automatic telescopic rod is started to move the lifting ring upward. The lifting ring can then push the diamond powder and metal powder upward. When the diamond powder and metal powder correspond to the feed hole, the diamond powder and metal powder can enter the interior of the inner cylinder through the feed hole and be located above the diamond powder and metal powder inside the inner cylinder. Subsequently, the lifting ring is restored; according to the above operations, the moving ring and the lifting ring cooperate with each other to transfer the diamond powder and metal powder located below the interior of the inner cylinder multiple times, so that all the diamond powder and metal powder can be stirred and mixed in different positions; the utility model can effectively change the positions of the diamond powder and metal powder piled up below, so that the diamond powder and metal powder can be fully mixed and the mixing efficiency of the diamond powder and metal powder is improved, ensuring the quality of the diamond grinding wheel produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic structural view of the front view of the present utility model;

[0009] Figure 2 is Figure 1 an enlarged structural view of part A of

[0010] Figure 3 is a schematic structural view of the sectional view of the moving ring of the present utility model.

[0011] In the figure: 1, vertical cylinder; 2, inner cylinder; 21, sealing ring; 22, feed pipe; 23, circular shell; 24, bearing cylinder; 3, stirring paddle; 31, motor; 32, fixing plate; 33, hydraulic rod; 34, blade; 35, counterweight block; 36, connecting bar; 4, moving ring; 41, cover cylinder; 42, electric telescopic rod; 5, lifting ring; 51, first automatic telescopic rod; 6, feed hole; 7, rubber pad; 8, second automatic telescopic rod; 81, annular piece; 82, short rod; 9, discharge pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] The following will describe in detail the specific content of the present utility model in conjunction with the drawings and embodiments.

[0013] As Figure 1 、Figure 2 and Figure 3 As shown in Figure 3 , the utility model provides a powder mixer, which includes a vertical cylinder 1. An inner cylinder 2 with its top extending outside the vertical cylinder 1 is arranged inside the vertical cylinder 1. A sealing ring 21 is fixed between the outer wall of the inner cylinder 2 and the inner wall of the vertical cylinder 1. A feed pipe 22 is communicated with the inner cylinder 2. A stirring paddle 3 is arranged inside the inner cylinder 2. A motor 31 for driving the stirring paddle 3 to rotate is arranged on the inner cylinder 2. A discharge pipe 9 passing through the vertical cylinder 1 is communicated with the bottom of the inner cylinder 2. A perforation is formed at the bottom of the inner cylinder 2. A moving ring 4 with its top contacting the bottom of the inner cylinder 2 is arranged inside the vertical cylinder 1. A cover cylinder 41 is fixed to the bottom of the moving ring 4. An electric telescopic rod 42 for driving the moving ring 4 to lift and lower is arranged inside the vertical cylinder 1. An ascending and descending ring 5 with its inner ring surface contacting the outer wall of the cover cylinder 41 is arranged inside the vertical cylinder 1. The outer ring surface of the ascending and descending ring 5 contacts the inner wall of the vertical cylinder 1. A first automatic telescopic rod 51 for driving the ascending and descending ring 5 to lift and lower is arranged on the vertical cylinder 1. A feed hole 6 is formed on the inner cylinder 2 near the top of the vertical cylinder 1.

[0014] As Figure 1 shown in Figure 1 , a fixing plate 32 is fixed on the main body of the motor 31. A hydraulic rod 33 is fixed to the top of the inner cylinder 2. The telescopic end of the hydraulic rod 33 is connected with the fixing plate 32. Legs are fixed to the bottom of the vertical cylinder 1. The fixed end of the first automatic telescopic rod 51 is fixed to the legs through a connecting plate. The telescopic end of the first automatic telescopic rod 51 passes through the bottom of the vertical cylinder 1 and is connected with the bottom of the ascending and descending ring 5. The number of the hydraulic rods 33 is at least two. After starting the hydraulic rods 33, the telescopic ends of the hydraulic rods 33 can drive the motor 31 to move upward through the fixing plate 32, and the motor 31 can drive the stirring paddle 3 to move upward, changing the position of the stirring paddle 3 to facilitate the all-round stirring of the diamond powder and metal powder inside the inner cylinder 2. Openings are formed on the blades of the stirring paddle 3 to facilitate the better stirring and mixing of the diamond powder and metal powder. The number of the first automatic telescopic rods 51 is at least two. After starting the first automatic telescopic rods 51, the telescopic ends of the first automatic telescopic rods 51 can drive the ascending and descending ring 5 to move upward or downward.

[0015] As Figure 1 and Figure 2 shown in Figure 2 , there are two groups of the feed holes 6, and the two groups of feed holes 6 are distributed up and down and are both located below the sealing ring 21. The feed holes 6 are arranged in a funnel shape, and the end with a larger diameter of the feed holes 6 is located on the inner wall of the inner cylinder 2. The sealing ring 21 can seal the gap between the vertical cylinder 1 and the inner cylinder 2 to prevent impurities from entering. The feed holes 6 are arranged in a funnel shape so that the diamond powder and metal powder entering the feed holes 6 can smoothly slide into the inner cylinder 2.

[0016] As Figure 1As shown in the figure, the number of the feed pipes 22 is two, and the two feed pipes 22 are symmetrically distributed left and right. One end of the feed pipe 22 located inside the inner cylinder 2 is communicated with a circular shell 23, and leakage holes are formed at the bottom of the circular shell 23. The diamond powder and the metal powder can be respectively conveyed through the two feed pipes 22. After the diamond powder and the metal powder respectively enter the two circular shells 23, they can uniformly fall downward through the leakage holes at the bottom of the circular shell 23, avoiding the accumulation of the diamond powder and the metal powder at one place.

[0017] As Figure 1 shown in the figure, a bearing cylinder 24 is fixed inside the inner cylinder 2 above the feed hole 6. A circular hole is formed at the bottom of the bearing cylinder 24. A blade 34 which is in sliding connection with the stirring paddle 3 and contacts with the bottom inside the bearing cylinder 24 is fixed on the stirring paddle 3, and a counterweight 35 is fixed on the blade 34. After the diamond powder and the metal powder enter the inner cylinder 2, they first fall into the bearing cylinder 24, and then the blade 34 rotates along with the stirring paddle 3, so that the diamond powder and the metal powder can be pre-mixed inside the bearing cylinder 24, and then the diamond powder and the metal powder uniformly fall downward through the circular hole at the bottom of the bearing cylinder 24; a slider is fixed on the blade 34, a vertical slideway is formed on the stirring paddle 3, and through the arrangement of the counterweight 35, when the stirring paddle 3 moves upward or downward, the blade 34 will not be driven to move upward or downward; a hole for the bottom end of the stirring paddle 3 to pass through is formed at the axis center of the bearing cylinder 24, which will not affect the normal rotation of the stirring paddle 3.

[0018] As Figure 1 shown in the figure, the bottom end of the stirring paddle 3 is fixed with a connecting strip 36 which is U-shaped and contacts with the inner wall of the inner cylinder 2. After the connecting strip 36 rotates along with the stirring paddle 3, the diamond powder and the metal powder adhered to the inner wall of the inner cylinder 2 can be scraped off.

[0019] As Figure 1 and Figure 3As shown, the moving ring 4 is hollow, and a rubber pad 7 is fixed to the top of the moving ring 4; a second automatic telescopic rod 8 is fixed to the bottom of the moving ring 4. The telescopic end of the second automatic telescopic rod 8 penetrates through the bottom of the moving ring 4 and is fixed with an annular piece 81 located inside the moving ring 4. A group of short rods 82 penetrating through the top of the moving ring 4 are fixed to the top of the annular piece 81, and the top ends of the short rods 82 are in contact with the bottom of the rubber pad 7. The rubber pad 7 is annularly arranged. The part of the rubber pad 7 close to the outer ring surface of the moving ring 4 is fixed to the top surface of the moving ring 4. The part of the rubber pad 7 close to the discharge pipe 9 is fixed to the top of the moving ring 4, and the middle part of the rubber pad 7 is fixed to the top surface of the moving ring 4; the fixed end of the electric telescopic rod 42 is fixed to the bottom inside the vertical cylinder 1, and the telescopic end of the electric telescopic rod 42 is fixed to the bottom of the moving ring 4. The number of the electric telescopic rods 42 is at least two, and both of the two electric telescopic rods 42 are located inside the cover cylinder 41; when the electric telescopic rod 42 is started to move the moving ring 4 downward, after the top of the rubber pad 7 no longer contacts the bottom of the inner cylinder 2, when the diamond powder and metal powder inside the inner cylinder 2 fall downward through the perforation at the bottom of the inner cylinder 2, then the second automatic telescopic rod 8 is started. The telescopic end of the second automatic telescopic rod 8 drives a group of short rods 82 to move upward through the annular piece 81, and a group of short rods 82 push the bottom of the rubber pad 7 upward (a group of short rods 82 are close to the discharge pipe 9), so that the top of the rubber pad 7 bulges upward, so that the diamond powder and metal powder falling on the top of the rubber pad 7 can slide more smoothly toward the outer ring surface of the moving ring 4.

[0020] During use, after the diamond powder and metal powder are put into the inside of the inner cylinder 2 through the feed pipe 22, the motor 31 can be started to drive the stirring paddle 3 to rotate, so as to stir the diamond powder and metal powder inside the inner cylinder 2 and mix the diamond powder and metal powder; at the same time, the electric telescopic rod 42 can be started to move the moving ring 4 downward, no longer blocking the perforation at the bottom of the inner cylinder 2. The diamond powder and metal powder located below the inner cylinder 2 can then be discharged through the perforation at the bottom of the inner cylinder 2 to the top of the moving ring 4, and then slide downward from the top of the moving ring 4 to the top of the lifting ring 5. The cover cylinder 41 can block the diamond powder and metal powder, and the inner ring surface of the moving ring 4 is in contact with the outer wall of the discharge pipe 9; then the moving ring 4 is restored to continue to seal the perforation at the bottom of the inner cylinder 2, and then the first automatic telescopic rod 51 is started to move the lifting ring 5 upward. The lifting ring 5 can then push the diamond powder and metal powder upward. When the diamond powder and metal powder correspond to the feed hole, the diamond powder and metal powder can enter the inside of the inner cylinder 2 through the feed hole 6 and be located above the diamond powder and metal powder inside the inner cylinder 2. Subsequently, the lifting ring 5 is restored; according to the above operations, the moving ring 4 and the lifting ring 5 cooperate with each other to transfer the diamond powder and metal powder located below the inner cylinder 2 multiple times, so that all the diamond powder and metal powder can be in different positions for stirring and mixing.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A powder mixer, comprising a vertical cylinder (1), characterized in that: An inner cylinder (2) is provided on the inner side of the vertical cylinder (1) and the top thereof extends outside the vertical cylinder (1); a sealing ring (21) is fixed between the outer wall of the inner cylinder (2) and the inner wall of the vertical cylinder (1); a feed pipe (22) is connected to the inner cylinder (2); a stirring paddle (3) is provided inside the inner cylinder (2); a motor (31) is provided on the inner cylinder (2) for driving the stirring paddle (3) to rotate; a discharge pipe (9) penetrating the vertical cylinder (1) is connected to the bottom of the inner cylinder (2); a through hole is provided at the bottom of the inner cylinder (2); a sealing ring (21) is fixed between the outer wall of the inner cylinder (2) and the inner wall of the vertical cylinder (1); A movable ring (4) is provided at the bottom of the movable ring (4), a cover tube (41) is fixed at the bottom of the movable ring (4), and an electric telescopic rod (42) is provided in the vertical tube (1) for driving the movable ring (4) to rise and fall; a lifting ring (5) is provided in the vertical tube (1), the inner ring surface of which is in contact with the outer wall of the cover tube (41), the outer ring surface of the lifting ring (5) is in contact with the inner wall of the vertical tube (1), and a No. 1 automatic telescopic rod (51) is provided on the vertical tube (1) for driving the lifting ring (5) to rise and fall, and a feeding hole (6) is provided on the inner tube (2) near the top of the vertical tube (1).

2. A powder mixer according to claim 1, characterized in that: A fixing plate (32) is fixed on the main body of the motor (31), a hydraulic rod (33) is fixed on the top of the inner cylinder (2), and the telescopic end of the hydraulic rod (33) is connected to the fixing plate (32); a supporting leg is fixed to the bottom of the vertical cylinder (1), and the fixed end of the No. 1 automatic telescopic rod (51) is fixed to the supporting leg through a connecting plate, and the telescopic end of the No. 1 automatic telescopic rod (51) passes through the bottom of the vertical cylinder (1) and is connected to the bottom of the lifting ring (5).

3. A powder mixer according to claim 1, characterized in that: The feed holes (6) are provided with two groups, the two groups of feed holes (6) are distributed up and down and are both located below the sealing ring (21); the feed holes (6) are arranged in a funnel shape, and the end of the feed holes (6) with a larger diameter is located on the inner wall of the inner cylinder (2).

4. A powder mixer according to claim 1, characterized in that: There are two feed pipes (22), which are symmetrically distributed on the left and right sides. One end of the feed pipe (22) located inside the inner cylinder (2) is connected to a round shell (23), and a leakage hole is provided at the bottom of the round shell (23).

5. A powder mixer according to claim 1, characterized in that: A supporting cylinder (24) located above the feed hole (6) is fixed inside the inner cylinder (2), a circular hole is opened at the bottom of the supporting cylinder (24), a blade (34) in contact with the bottom of the supporting cylinder (24) is slidably connected to the stirring paddle (3), and a counterweight (35) is fixed on the blade (34).

6. A powder mixer according to claim 1, characterized in that: A U-shaped connecting strip (36) in contact with the inner wall of the inner cylinder (2) is fixed to the bottom end of the stirring paddle (3).

7. A powder mixer according to claim 1, characterized in that: The moving ring (4) is hollow, and a rubber pad (7) is fixed on the top of the moving ring (4); a second automatic telescopic rod (8) is fixed on the bottom of the moving ring (4); the telescopic end of the second automatic telescopic rod (8) passes through the bottom of the moving ring (4) and is fixed with an annular sheet (81) located inside the moving ring (4); a group of short rods (82) passing through the top of the moving ring (4) are fixed on the top of the annular sheet (81); the top of the short rods (82) is in contact with the bottom of the rubber pad (7).

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