Screening device for powder metallurgy

Abstract

The utility model relates to a screening device for powder metallurgy, and aims to solve the problems that a traditional screening device is easy to block, and a screen is inconvenient to replace. The device comprises a base, a screening cylinder, a mandrel, a vibrator and a rotary driving mechanism. The two parallel and symmetrical screening net plates are arranged in the screening cylinder and installed through the inserting grooves, and rapid replacement is facilitated. The mandrel is obliquely arranged, a feeding channel and a waste discharging channel are arranged in the mandrel, the feeding channel is connected with the feeding hopper and the feeding port, and the waste discharging channel is connected with the waste collecting hopper and the waste outlet. And the vibrator and the rotary driving mechanism cooperate to enable the screening cylinder to vibrate and rotate for switching, so that powder blockage is effectively avoided, and the screening efficiency is improved. The powder metallurgy screening device is reasonable in structure, good in screening effect, convenient to maintain, suitable for the field of powder metallurgy and high in practicability and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, and in particular to a screening device for powder metallurgy. Background Technology

[0002] Powder metallurgy is a process technology that produces metal powders or uses metal powders as raw materials, and then shapes and sintersulates them to manufacture metal materials, composite materials, and various types of products. Powder metallurgy requires the use of sieving devices to separate the metal powders. Traditional sieving devices are mostly screening machines, whose basic structure consists of multiple screen plates vibrating under the drive of a vibrating motor to achieve the purpose of screening metal powders. However, there are certain problems with their use. For example, traditional vibrating screens are prone to clogging during the screening process. Also, the screens are generally installed inside the machine casing, making replacement or maintenance extremely troublesome, requiring the disassembly of the entire casing and reducing the efficiency of installation and replacement. Utility Model Content

[0003] This invention aims to solve the problems existing in the prior art by providing a sieving device for powder metallurgy, which has good sieving effect, is not prone to clogging, and is easy to replace the screen.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a sieving device for powder metallurgy, including a base, a screening cylinder is provided on the top of the base, a core shaft is rotatably installed at the center of the screening cylinder, the core shaft is inclined, a vibrator is provided between the core shaft and the base, and a rotation drive mechanism is provided between the screening cylinder and the base.

[0005] The screening cylinder is provided with two mounting slots, and a screening screen plate is inserted into each of the two mounting slots. The two screening screen plates are arranged in parallel and symmetrically on both sides of the mandrel. The upper and lower sections of the mandrel are respectively provided with a feeding channel and a waste discharge channel. The bottom side wall of the screening cylinder is provided with a discharge port.

[0006] The upper and lower ends of the feeding channel are respectively connected to the feeding hopper and the feeding port. The feeding hopper is located on the upper side of the mandrel and outside the screening cylinder, and the feeding port is located on the lower side of the mandrel and inside the screening cylinder. The upper and lower ends of the waste discharge channel are respectively connected to the waste collection hopper and the waste outlet. The waste collection hopper is located on the upper side of the mandrel and inside the screening cylinder, and the waste outlet is located on the lower side of the mandrel and outside the screening cylinder.

[0007] Further improvements include a rotating seat fixedly installed at the left end of the base, which is rotatably connected to the spindle; an elastic support rod rotatably installed at the right end of the base, which is rotatably connected to the spindle; and a vibrator including a vibration motor, which is fixedly connected to the elastic support rod.

[0008] In a further improvement, the rotary drive mechanism includes a rotary motor and a synchronous belt drive mechanism. The rotary motor is fixedly mounted on the base, and the output shaft of the rotary motor is connected to the input end of the synchronous belt drive mechanism. The output end of the synchronous belt drive mechanism is connected to the screening cylinder.

[0009] To further improve the design, a pendulum is provided on the outer side of the screening screen plate, and the handle of the pendulum is hinged to the inner wall of the screening cylinder.

[0010] To further improve the design, a stirring rod is fixedly installed on the mandrel, and the outer end of the stirring rod is provided with a cleaning brush for cleaning the inner surface of the screening screen.

[0011] To further improve the design, an annular collection trough surrounding the material discharge port is fixedly installed on the base.

[0012] To further improve the system, a vacuum cleaner is connected to the waste outlet, and a dustproof cloth cover is fixedly installed on the discharge port.

[0013] The beneficial effects of this utility model are as follows: The powder metallurgy screening device of this utility model, through its unique structural design, effectively solves the problems of clogging and inconvenient screen replacement inherent in traditional screening devices. The inclined mandrel at the center of the screening cylinder, in conjunction with the vibrator, allows the metal powder to move along the inclined angle while vibrating during the screening process, preventing powder accumulation and clogging. Simultaneously, the screening screen plates are installed in the mounting slots of the screening cylinder using a plug-in method, arranged symmetrically on both sides of the mandrel, facilitating quick disassembly and replacement without disassembling the entire casing, greatly improving the efficiency of screen replacement and maintenance. Furthermore, the feed channel and waste discharge channel inside the mandrel ensure smoother feeding of metal powder and discharge of waste, further optimizing the screening process and improving screening effect and overall working efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Example 1;

[0015] Figure 2 This is a schematic diagram of the structure of Example 2;

[0016] Figure 3 This is a schematic diagram of the structure of Example 3;

[0017] Figure 4 This is a schematic diagram of the structure of Example 4;

[0018] Explanation of reference numerals in the attached drawings: 1. Base; 11. Rotating seat; 12. Elastic support rod; 13. Annular collection trough; 14. Vacuum cleaner; 15. Dustproof cloth cover; 2. Screening cylinder; 21. Mounting slot; 22. Screening mesh plate; 23. Material discharge port; 24. Pendulum; 3. Mandrel; 31. Feeding channel; 32. Waste discharge channel; 33. Feeding hopper; 34. Feeding port; 35. Waste collection hopper; 36. Waste outlet; 37. Stirring rod; 38. Cleaning brush; 4. Vibrator; 41. Vibrating motor; 5. Rotary drive mechanism; 51. Rotary motor; 52. Synchronous belt drive mechanism. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] See attached document Figure 1 In this embodiment 1, a sieving device for powder metallurgy includes a base 1, a screening cylinder 2 is provided on the top of the base 1, a spindle 3 is rotatably mounted at the center of the screening cylinder 2, the spindle 3 is inclined, a vibrator 4 is provided between the spindle 3 and the base 1, and a rotary drive mechanism 5 is provided between the screening cylinder 2 and the base 1.

[0021] The screening cylinder 2 is provided with two mounting slots 21, and a screening screen plate 22 is inserted into each of the two mounting slots 21. The two screening screen plates 22 are arranged in parallel and symmetrically on both sides of the mandrel 3. The upper and lower sections of the mandrel 3 are respectively provided with a feeding channel 31 and a waste discharge channel 32. The bottom side wall of the screening cylinder 2 is provided with a discharge port 23.

[0022] The upper and lower ends of the feeding channel 31 are respectively connected to the feeding hopper 33 and the feeding port 34. The feeding hopper 33 is located on the upper side of the mandrel 3 and outside the screening cylinder 2, and the feeding port 34 is located on the lower side of the mandrel 3 and inside the screening cylinder 2. The upper and lower ends of the waste discharge channel 32 are respectively connected to the waste collection hopper 35 and the waste outlet 36. The waste collection hopper 35 is located on the upper side of the mandrel 3 and inside the screening cylinder 2, and the waste outlet 36 is located on the lower side of the mandrel 3 and outside the screening cylinder 2.

[0023] Working Principle: This utility model of a powder metallurgy screening device achieves a highly efficient screening process through optimized structure. During operation, metal powder enters the feeding channel 31 on the upper side of the mandrel 3 from the feeding hopper 33, and then enters the screening cylinder 2 through the feeding port 34 under the action of the vibrator 4. Under the action of the vibrator 4, and with the mandrel 3 tilted, the metal powder moves along the surface of the screening screen 22 and is screened under the combined action of vibration and tilting motion. Qualified powder falls through the screen holes of the screening screen 22 and is discharged from the discharge port 23, while larger waste particles remain on the screen. After screening, the screening cylinder 2 rotates 180 degrees under the drive of the rotary drive mechanism 5, switching between the upper and lower screening screens 22. Unqualified waste falls into the waste collection hopper 35 under the action of gravity or vibration, enters the waste discharge channel 32 on the lower side of the mandrel 3, and is discharged through the waste outlet 36, minimizing the risk of clogging the screening screen 22. The screening screen 22 is installed in the mounting slot 21 using a plug-in method, facilitating quick replacement and maintenance. Furthermore, the screening screen 22 can be fitted with a lock like a drawer cabinet, making the fixation more secure. This technical solution effectively avoids the clogging problem of metal powder in traditional screening devices, while greatly improving the convenience of screen replacement, significantly enhancing screening efficiency and the practicality of the device.

[0024] Example 2, refer to Appendix Figure 2 Based on Embodiment 1, a rotating seat 11 is fixedly installed on the left end of the base 1. The rotating seat 11 is rotatably connected to the spindle 3, providing stable support for the rotation of the spindle 3. An elastic support rod 12 is rotatably installed on the right end of the base 1. The elastic support rod 12 is rotatably connected to the spindle 3. This design not only enhances the stability of the device but also provides a certain elastic buffer during the screening process, reducing the impact of vibration on the equipment. The vibrator 4 includes a vibration motor 41, which is fixedly connected to the elastic support rod 12. Through the vibration action of the vibration motor 41, combined with the elastic buffer of the elastic support rod 12, the metal powder in the screening cylinder 2 can be efficiently screened under vibration.

[0025] The powder metallurgy screening device achieves stable rotation of the screening cylinder through a sophisticated rotary drive mechanism. The rotary drive mechanism 5 includes a rotary motor 51 and a synchronous belt drive mechanism 52. The rotary motor 51 is fixedly mounted on the base 1, and its output shaft is connected to the input end of the synchronous belt drive mechanism 52, while the output end of the synchronous belt drive mechanism 52 is connected to the screening cylinder 2. This design utilizes the efficient transmission characteristics of the synchronous belt drive mechanism to smoothly transmit the power of the rotary motor to the screening cylinder, ensuring that the screening cylinder can rotate continuously and uniformly during the screening process.

[0026] Example 3, refer to Appendix Figure 3Based on Example 1, the device is further optimized by setting a pendulum 24 on the outer side of the screening screen 22, which effectively solves the problem of powder clogging the screen holes during the screening process. The handle of the pendulum 24 is hinged to the inner wall of the screening cylinder 2. Under the action of the vibrator 4, the pendulum 24 swings with the vibration of the screening cylinder 2. This swing can apply additional impact force to the screening screen 22, loosening the powder in the screen holes, thereby preventing powder from clogging the screen holes and ensuring the continuity and efficiency of the screening process.

[0027] The device has been further optimized by fixing a stirring rod 37 to the mandrel 3 and installing a cleaning brush 38 at the outer end of the stirring rod 37, enabling real-time cleaning of the inner surface of the screening screen 22. During the screening process, the rotational motion of the mandrel 3 relative to the screening cylinder causes the cleaning brush 38 on the stirring rod 37 to continuously wipe the inner surface of the screening screen 22. This design effectively removes residual powder from the screen holes, prevents screen blockage, and thus ensures screening efficiency and quality.

[0028] Example 4, refer to Appendix Figure 4 Based on Example 1, the material collection function during the screening process is further optimized. An annular collection trough 13 is fixedly installed on the base 1 around the discharge port 23. The annular collection trough 13 can effectively receive qualified powder discharged from the discharge port 23, preventing the powder from scattering or accumulating during the discharge process, and ensuring that the screened material can be collected and processed in a centralized manner.

[0029] The environmental performance and operating environment have been further optimized. By connecting a vacuum cleaner 14 to the waste outlet 36, unqualified waste materials (such as dust and fine particles) generated during the screening process can be promptly sucked into the vacuum cleaner for collection and treatment, effectively preventing waste materials from flying or scattering in the air, reducing dust pollution, and improving the working environment. A dustproof cloth cover 15 is fixedly installed on the discharge port 23. The dustproof cloth cover 15 can effectively prevent qualified powder after screening from directly contacting the outside air during the discharge process, avoiding powder flying or secondary pollution caused by airflow and other factors, and ensuring that the screened material remains clean and pure. In addition, the dustproof cloth cover 15 also has a certain buffering effect, which can reduce the impact force when the powder is discharged, further protecting the equipment and materials.

[0030] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A screening device for powder metallurgy, comprising a base (1) provided at the top with a screening drum (2), characterized in that: The center of the screening cylinder (2) is rotatably installed with a mandrel (3), which is arranged obliquely, and a vibrator (4) is arranged between the mandrel (3) and the base (1); a rotary drive mechanism (5) is arranged between the screening cylinder (2) and the base (1). Two mounting slots (21) are arranged on the screening cylinder (2), and two screening mesh plates (22) are inserted into the two mounting slots (21); the two screening mesh plates (22) are arranged in parallel and symmetrically on both sides of the mandrel (3); an upper section and a lower section of the mandrel (3) are respectively provided with an inlet channel (31) and a waste discharge channel (32); and a material dropping port (23) is arranged on the bottom side wall of the screening cylinder (2). The upper end and the lower end of the inlet channel (31) are respectively connected with an inlet hopper (33) and an inlet port (34); the inlet hopper (33) is located on the upper side of the mandrel (3) and outside the screening cylinder (2); and the inlet port (34) is located on the lower side of the mandrel (3) and inside the screening cylinder (2); the upper end and the lower end of the waste discharge channel (32) are respectively connected with a waste collecting hopper (35) and a waste outlet (36); the waste collecting hopper (35) is located on the upper side of the mandrel (3) and inside the screening cylinder (2); and the waste outlet (36) is located on the lower side of the mandrel (3) and outside the screening cylinder (2).

2. A screening device for powder metallurgy according to claim 1, characterized in that: A rotating seat (11) is fixedly installed on the left end of the base (1) and rotatably connected with the mandrel (3); an elastic support rod (12) is rotatably installed on the right end of the base (1) and rotatably connected with the mandrel (3); and the vibrator (4) comprises a vibration motor (41) fixedly connected with the elastic support rod (12).

3. A screening device for powder metallurgy according to claim 1, characterized in that: The rotary drive mechanism (5) comprises a rotary motor (51) and a synchronous belt transmission mechanism (52); the rotary motor (51) is fixedly installed on the base (1); the output shaft of the rotary motor (51) is connected with the input end of the synchronous belt transmission mechanism (52); and the output end of the synchronous belt transmission mechanism (52) is connected with the screening cylinder (2).

4. A screening device for powder metallurgy according to claim 1, characterized in that: A pendulum (24) is arranged on the outer side of the screening mesh plate (22); and the handle of the pendulum (24) is hinged to the inner wall of the screening cylinder (2).

5. A screening device for powder metallurgy according to claim 1, characterized in that: A stirring rod (37) is fixedly installed on the mandrel (3); and a cleaning brush (38) for cleaning the inner surface of the screening mesh plate (22) is arranged on the outer end of the stirring rod (37).

6. A screening device for powder metallurgy according to claim 1, characterized in that: An annular collecting groove (13) surrounding the material dropping port (23) is fixedly installed on the base (1).

7. A screening device for powder metallurgy according to claim 1, characterized in that: A dust collector (14) is connected to the waste outlet (36); and a dustproof cloth sleeve (15) is fixedly installed on the material dropping port (23).

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