A pulverizing and screening device for metal matrix composites

Abstract

The utility model relates to the technical field of crushing and screening device, specifically relates to a kind of crushing and screening device of metal matrix composite, it includes: screening box, multiple shock-absorbing support seat and multiple vibration motors fixedly connected on screening box, further include: symmetry through rotating in the spline barrel of screening box side wall;Upper frame, the upper frame and two spline barrels are fixedly connected, and the upper screen plate is installed in the upper frame by quick release mechanism;Gear one, gear one is fixedly connected with one spline barrel side wall;Gear two, gear two and screening box outside wall are rotatably connected;Symmetry through rotating in the pivot of screening box side wall, two the pivot is fixedly connected with lower frame;Gear three.The utility model is through the quick release mechanism of design, it is convenient to complete the replacement of upper and lower screen plate, saves the cumbersome procedure of traditional bolt fixation, significantly shortens the downtime time of loading, so that production line can quickly respond different granularity specification screening task.

Description

Technical Field

[0001] This utility model relates to the technical field of crushing and screening devices, specifically to a crushing and screening device for metal-based composite materials. Background Technology

[0002] In the preparation of metal matrix composites, various reinforcements are typically mixed with a metal matrix. The particle size and distribution of the alloy powders of the reinforcement and matrix are crucial to the final performance of the composite material. Therefore, before processes such as powder metallurgy, the raw materials that have undergone preliminary crushing are often screened and graded to obtain powders with uniform particle size.

[0003] Existing screening devices mostly use vibrating screens with a fixed tilt angle. The screen plates are usually fixed with bolts, making it cumbersome and time-consuming to replace screen plates with different apertures, which seriously affects production efficiency. In addition, once the tilt angle of the screen plate is fixed, it is difficult to adjust, making it impossible to flexibly control the flow rate and residence time of the material on the screen according to the characteristics of the material (such as flowability, particle size, moisture content, and particle size), thus affecting screening efficiency and accuracy.

[0004] To address this, we propose a crushing and screening device for metal matrix composites. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a crushing and screening device for metal matrix composite materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A crushing and screening device for metal matrix composite materials includes: a screening box, multiple shock-absorbing support seats and multiple vibration motors fixedly attached to the screening box, and further includes: A symmetrically rotating splined cylinder runs through the side wall of the screening box; The upper frame is fixedly connected to two splined cylinders, and an upper screen plate is installed inside the upper frame through a quick-release mechanism; Gear 1, wherein gear 1 is fixedly connected to one of the splined cylinder sidewalls; Gear 2, which is rotatably connected to the outer wall of the screening box; A symmetrical rotating shaft runs through the side wall of the screening box, and the two rotating shafts are fixedly connected to a lower frame. A lower screen plate is installed inside the lower frame through a quick-release mechanism. Gear three, which is fixedly connected to one of the rotating shafts.

[0007] Preferably, another splined cylinder has a splined shaft slidably connected to its inner sidewall, one end of the splined shaft is fixedly connected to a handle, and the inner sidewall of the handle is fixedly connected to a locking pin.

[0008] Preferably, the side wall of the screening box has multiple locking holes arranged in a circular array, and the locking post is inserted into one of the locking holes.

[0009] Preferably, a return spring is sleeved on the side wall of the spline shaft, one end of the return spring is slidably connected to the side wall of the screening box, and the other end of the return spring is fixedly connected to the side wall of the spline shaft.

[0010] Preferably, gear one and gear two are meshed together, and gear two and gear three are meshed together.

[0011] Preferably, a feed pipe is fixedly connected to one end of the top wall of the screening box, the upper frame and the lower frame are U-shaped, and the inner sidewalls are provided with sliding grooves.

[0012] Preferably, the quick-release mechanism includes a plurality of T-shaped rods symmetrically and slidably connected to the side walls of the upper and lower frames. The T-shaped rods abut against one end of the upper screen plate to form a limit, and the T-shaped rods abut against one end of the lower screen plate to form a limit. A tension spring is sleeved and fixed on the side wall of the T-shaped rod. The tension spring is fixedly connected to the side wall of the upper frame and the side wall of the lower frame.

[0013] This utility model has the following beneficial effects: 1. The quick-release mechanism facilitates the replacement of the upper and lower screen plates, eliminating the cumbersome process of traditional bolt fixing, significantly shortening downtime for replacement, enabling the production line to quickly respond to screening tasks of different particle sizes, easily achieving multi-stage configuration from coarse screening to fine screening, greatly expanding the application range of the equipment, and meeting the modern production needs of small batches and multiple varieties. 2. By incorporating a splined shaft, multiple gears, and a tapered locking hole, operators can easily and precisely adjust the tilt angle of the upper and lower screen plates synchronously. The combination of the tapered countersunk hole and the ball-head locking post, under the action of the return spring, provides excellent self-locking, effectively preventing angle drift that may occur under strong vibration conditions and ensuring the stability of process parameters. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external appearance of a metal matrix composite material crushing and screening device proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of the screening box in a metal matrix composite crushing and screening device proposed in this utility model; Figure 3 for Figure 2 Enlarged schematic diagram of part A of the structure; Figure 4 This is a schematic diagram of the external appearance of a metal matrix composite crushing and screening device proposed in this utility model from another angle. Figure 5 for Figure 4 Enlarged schematic diagram of section B of the structure; Figure 6 This is a schematic diagram showing the connection relationship between the pin and the T-shaped rod in a metal matrix composite crushing and screening device proposed in this utility model.

[0015] In the diagram: 1. Screening box; 2. Vibration motor; 3. Shock-absorbing support; 4. Feed pipe; 5. T-shaped rod; 6. Locking hole; 7. Splined cylinder; 8. Upper frame; 9. Rotating shaft; 10. Lower frame; 11. Gear 1; 12. Gear 2; 13. Gear 3; 14. Handle; 15. Splined shaft; 16. Return spring; 17. Locking post; 18. Upper screen plate; 19. Lower screen plate; 20. Tension spring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figures 1-6 A crushing and screening device for metal matrix composite materials includes: a screening box 1, multiple shock-absorbing support seats 3 and multiple vibration motors 2 fixed on the screening box 1, the vibration motors 2 being symmetrically arranged on both sides of the screening box 1 to ensure stable vibration. The vibration motors 2 and the shock-absorbing support seats 3 are existing technologies and will not be described in detail here. The device also includes: A splined cylinder 7 symmetrically rotates through the side wall of the screening box 1; The upper frame 8 is fixedly connected to two splined cylinders 7. The upper sieve plate 18 is installed inside the upper frame 8 through a quick-release mechanism. Gear 11 is fixedly connected to the side wall of one of the splined cylinders 7; Gear 2 12 is rotatably connected to the outer wall of screening box 1; A symmetrical rotating shaft 9 is symmetrically connected to the side wall of the screening box 1. The two rotating shafts 9 are fixedly connected to the lower frame 10. The lower frame 10 is equipped with a lower screen plate 19 through a quick-release mechanism. Gear 313 is fixedly connected to one of the rotating shafts 9.

[0018] Another splined cylinder 7 has a splined shaft 15 that is slidably connected to the inner wall. One end of the splined shaft 15 is fixedly connected to a handle 14, and the inner wall of the handle 14 is fixedly connected to a locking pin 17.

[0019] The side wall of the screening box 1 has multiple locking holes 6 arranged in a circular array. The locking pin 17 can be inserted into any one of the locking holes 6 to achieve positioning and locking. The locking hole 6 is a conical countersunk hole, and the front end of the locking pin 17 is a ball head or a cone to enhance self-locking.

[0020] A return spring 16 is sleeved on the side wall of the spline shaft 15. One end of the return spring 16 is slidably connected to the side wall of the screening box 1. That is, one end of the return spring 16 is slidably installed on the side wall of the screening box 1 by means of a retaining ring. It can rotate relative to the side wall but cannot be axially separated. The other end of the return spring 16 is fixedly connected to the spline shaft 15 to provide a rebound force.

[0021] Gear 11 and gear 212 are meshed together, and gear 212 and gear 313 are meshed together.

[0022] The screening box 1 is equipped with a feed pipe 4 and a discharge pipe. The upper frame 8 and the lower frame 10 are U-shaped structures, and their inner side walls are provided with sliding grooves. The upper screen plate 18 and the lower screen plate 19 are respectively inserted and slid in the corresponding sliding grooves to achieve the function of limiting the position.

[0023] The quick-release mechanism includes multiple T-shaped rods 5 symmetrically and slidably connected to the side walls of the upper frame 8 and the lower frame 10. One end of each T-shaped rod 5 abuts against the upper screen plate 18 to form a limiting contact, and the other end of each T-shaped rod 5 abuts against the lower screen plate 19 to form a limiting contact. A tension spring 20 is fixedly fitted onto the side wall of each T-shaped rod 5. The tension spring 20 is fixedly connected to the side wall of the upper frame 8 and the side wall of the lower frame 10. The tension spring 20 has a large stiffness coefficient to prevent the T-shaped rod 5 from shifting outwards due to vibration. Alternatively, an insertion hole (e.g., ...) can be provided on the side wall of the T-shaped rod 5 away from the tension spring 20. Figure 6 As shown), the socket has a sliding pin for added secondary safety.

[0024] In this invention, in practical application, the operator feeds the pulverized metal-based composite material into the screening box 1 through the feed pipe 4. The material first falls onto the upper screen plate 18. After starting multiple vibration motors 2, the screening box 1 vibrates, causing the material to shake on the surface of the upper screen plate 18 and gradually move towards the outlet.

[0025] During this process, larger particles are retained by the upper sieve plate 18 and continuously conveyed outward, while smaller particles pass through the upper sieve plate 18 and fall to the lower sieve plate 19. Since the sieve aperture of the lower sieve plate 19 is smaller than that of the upper sieve plate 18, finer particles can be further classified and screened.

[0026] When the production workshop screens metal matrix composite materials with different degrees of crushing, it is necessary to replace the upper screen plate 18 and lower screen plate 19 inside the screening box 1 and select a suitable screen aperture. The specific operation is as follows: after turning off the vibration motor 2, pull multiple T-shaped rods 5 to compress the tension spring 20. The T-shaped rods 5 disengage from the contact limit of one end of the upper screen plate 18 and lower screen plate 19. Then, take out the old screen plate and install a new screen plate that meets the aperture requirements. Loosen the T-shaped rods 5 so that they are reset under the action of the tension spring 20, and complete the limit fixation of the screen plate again.

[0027] In addition, to adapt to the screening requirements of metal-based composite materials with different particle sizes, the tilt angle of the upper and lower screen plates can be adjusted to control the flow speed of the material on the screen plates. The specific operation is as follows: Hold the handle 14 and pull it outwards, causing the locking pin 17 to disengage from the current locking hole 6, and rotate the handle 14 at a certain angle. The handle 14 drives gear one 11 to rotate, which in turn transmits the power through gear two 12 to gear three 13. By setting the transmission ratio of gear one 11, gear two 12, and gear three 13, the splined cylinder 7 drives the upper screen plate 18 to rotate synchronously at a certain angle through the upper frame 8; simultaneously, the rotating shaft 9 drives the lower screen plate 19 to rotate synchronously through the lower frame 10. After adjustment, release the handle 14, and the return spring 16 pushes the locking pin 17 into the corresponding locking hole 6, completing the positioning.

[0028] This utility model has a reasonable structure and flexible operation. It can not only realize multi-stage screening, but also quickly change the screen plate and adjust the screen angle according to the material characteristics. It effectively improves the screening efficiency and adaptability of metal matrix composites after crushing, and is suitable for various production conditions.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A crushing and screening device for metal matrix composite materials, comprising: The screening box (1), multiple shock-absorbing support seats (3) and multiple vibration motors (2) fixedly connected to the screening box (1) are characterized in that they further include: A splined cylinder (7) that rotates symmetrically through the side wall of the screening box (1); The upper frame (8) is fixedly connected to two splined cylinders (7), and the upper sieve plate (18) is installed inside the upper frame (8) through a quick-release mechanism. Gear 1 (11), wherein gear 1 (11) is fixedly connected to the side wall of one of the splined cylinders (7); Gear 2 (12), which is rotatably connected to the outer wall of the screening box (1); A symmetrical rotating shaft (9) is symmetrically inserted through the side wall of the screening box (1). The two rotating shafts (9) are fixed together with a lower frame (10). The lower frame (10) is equipped with a lower screen plate (19) through a quick-release mechanism. Gear three (13), which is fixedly connected to one of the rotating shafts (9).

2. The pulverizing and screening device for metal matrix composite materials according to claim 1, characterized in that, Another splined cylinder (7) has a splined shaft (15) slidably connected to its inner side wall. One end of the splined shaft (15) is fixedly connected to a handle (14), and the inner side wall of the handle (14) is fixedly connected to a locking pin (17).

3. The pulverizing and screening device for metal matrix composite materials according to claim 2, characterized in that, The side wall of the screening box (1) is provided with multiple locking holes (6) arranged in a circular array, and the locking post (17) is inserted into one of the locking holes (6).

4. The pulverizing and screening device for metal matrix composite materials according to claim 2, characterized in that, A reset spring (16) is sleeved on the side wall of the spline shaft (15). One end of the reset spring (16) is slidably connected to the side wall of the screening box (1), and the other end of the reset spring (16) is fixedly connected to the side wall of the spline shaft (15).

5. The pulverizing and screening device for metal matrix composite materials according to claim 1, characterized in that, Gear 1 (11) and gear 2 (12) are meshed together, and gear 2 (12) and gear 3 (13) are meshed together.

6. The pulverizing and screening device for metal matrix composite materials according to claim 1, characterized in that, The top wall of the screening box (1) is fixedly connected to a feed pipe (4), the upper frame (8) and the lower frame (10) are U-shaped structures, and the inner side wall is provided with a sliding groove.

7. The pulverizing and screening device for metal matrix composite materials according to claim 1, characterized in that, The quick-release mechanism includes multiple T-shaped rods (5) symmetrically slidingly connected to the side walls of the upper frame (8) and the lower frame (10). The T-shaped rods (5) abut against one end of the upper sieve plate (18) to form a limit, and the T-shaped rods (5) abut against one end of the lower sieve plate (19) to form a limit. Tension springs (20) are sleeved and fixed on the side walls of the T-shaped rods (5). Some of the tension springs (20) are fixed to the side walls of the upper frame (8), and the other tension springs (20) are fixed to the side walls of the lower frame (10).

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