Defective product crushing and recycling device special for powder metallurgy

Abstract

The utility model provides a special defective product crushing and recycling device for powder metallurgy. Comprising a rack, a feeding mechanism, a dust removal mechanism, a first crushing mechanism and a second crushing mechanism, wherein the feeding mechanism is fixedly arranged on the rack and used for feeding powder metallurgy defective products; the dust removal mechanism is arranged on the upper portion of the feeding mechanism and used for sucking impurities and dust on the surfaces of metallurgical parts; and the collecting mechanism is arranged below the second crushing mechanism and used for collecting crushed powder, and the collecting mechanism comprises a first collecting device used for collecting completely-crushed metallurgical powder in a sealed mode and a second collecting device used for collecting metallurgical particles which are not completely crushed. The special defective product crushing and recycling device for powder metallurgy is simple in structure and good in crushing quality, powder metallurgy raw materials can be completely crushed, and crushed products with different particle sizes can be collected respectively.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder metallurgy devices, in particular to a defective product crushing and recovery device special for powder metallurgy. Background Art

[0002] Powder metallurgy is a process technology that produces metal powder or uses metal powder (or a mixture of metal powder and non-metal powder) as raw material, and then forms and sinters it to manufacture metal materials, composite materials and various types of products. The production process of powder metallurgy technology has low cost, high production efficiency and is suitable for mass production. However, due to improper operation or poor precision during the production process, a large number of metallurgical residues will be produced.

[0003] The powder metallurgy recycling equipment in the prior art will collect the raw materials after crushing them. This form of unified recycling will have the following problems: 1. The raw materials are contaminated with dust and other impurities during the production process, resulting in poor cleanliness of the materials entering the crushing chamber, thus affecting the quality of the raw materials after crushing; 2. The poor uniformity of raw material crushing will cause crushed particles of different sizes to mix together, and they need to be screened and classified before they can be reused; 3. The crushed metal dust is prone to dust pollution in the collection process and poses a safety hazard. Therefore, in order to maximize the utilization of powder metallurgy, it is urgent to design a crushing equipment that can recycle, crush, screen and safely collect powder metallurgy residues according to specifications. Utility Model Content

[0004] The utility model proposes a powder metallurgy special defective product crushing and recovery device. By arranging a dust removal mechanism at the front end of the crushing mechanism, the dust and impurities on the surface of the raw materials can be removed to the greatest extent to improve the cleanliness of the raw materials. By arranging a double crushing mechanism, the crushing effect can be greatly improved. By arranging two collecting devices, the raw materials with different particle sizes after crushing can be collected separately. The finished powder after crushing can be collected by sealing to avoid the scattering of metal dust, which effectively solves the problems in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A powder metallurgy defective product crushing and recovery device comprises a frame, a feeding mechanism fixedly arranged on the frame for feeding powder metallurgy defective products, a dust removal mechanism arranged on the upper part of the feeding mechanism for absorbing impurities and dust on the surface of metallurgical parts, a first crushing mechanism arranged at the discharge port of the feeding mechanism, a second crushing mechanism arranged below the first crushing mechanism, and a collecting mechanism arranged below the second crushing mechanism for collecting crushed powder, wherein the collecting mechanism comprises a first collecting device for sealingly collecting metallurgical powder after complete crushing and a second collecting device for collecting metallurgical particles after incomplete crushing.

[0007] Furthermore, the feeding mechanism is fixed on the upper part of the frame in a drawer-like shape and tilted from high to low, and the end is fixedly and sealedly connected to the feeding port of the first crushing mechanism. The feeding mechanism includes a feeding bin and a stacking bin with an open top structure. The height of the stacking bin is greater than the height of the feeding bin. The connecting pipe in the dust removal mechanism is connected directly above the stacking bin.

[0008] Furthermore, the first crushing mechanism includes a cylindrical outer cover, a first cylindrical screen fixedly arranged in the outer cover, a crushing roller rotatably arranged at the center position of the first crushing mechanism, and a first driving device for driving the crushing roller to rotate, and the outer surface of the crushing roller is evenly surrounded by first crushing teeth in the shape of shark fins.

[0009] Furthermore, the second crushing mechanism includes a base in the shape of a quadrangular pyramid arranged at the lower part of the first crushing mechanism and fixedly connected to the outer cover, a roller rotatably arranged in the base, and a second driving device that drives the roller to rotate to achieve secondary crushing of the metallurgical particles. The roller includes a first roller and a second roller, and the first roller and the second roller are evenly provided with second crushing teeth on the roller bodies. The second crushing teeth on the first crushing roller and the second crushing roller are arranged in an interlaced manner. Third crushing teeth that cooperate with the crushing teeth to achieve crushing action are also fixedly provided on both sides of the inner wall of the base. The first roller, the second roller and the base cooperate to form a second crushing mechanism.

[0010] Furthermore, the dust removal mechanism is fixedly arranged on the side of the feeding mechanism, the dust outlet of the dust removal mechanism is arranged directly below the dust removal mechanism, and the dust removal mechanism is a pulse dust collector.

[0011] Furthermore, the first collecting device includes a discharge funnel arranged directly below the second crushing mechanism, a second screen at the upper part of the discharge funnel arranged obliquely and fixedly, and a discharge mechanism connected to the lower part of the discharge funnel, and the mesh of the second screen is smaller than the mesh of the first screen.

[0012] Furthermore, the discharging mechanism is a spiral discharging device fixedly connected to the frame and connected to the discharging end of the discharging funnel. The spiral feeding device includes a shaft cylinder, a feeding shaft rotatably arranged in the shaft cylinder, spiral blades arranged on the outer surface of the feeding shaft and a third driving device for driving the feeding shaft to rotate. A first discharging port is opened on the top side of the shaft cylinder.

[0013] Furthermore, the second collecting device includes a discharge channel connected to the top surface of the second screen and arranged at an angle, and a second discharge port arranged at the end of the discharge channel and opening downward.

[0014] The utility model has the following characteristics and beneficial effects:

[0015] The utility model relates to a powder metallurgy special defective product crushing and recovery device. By arranging a dust removal mechanism at the front end of the crushing mechanism, the dust impurities on the surface of the raw material can be removed to the greatest extent to improve the cleanliness of the raw material. By arranging a double crushing mechanism, the raw material can be crushed more completely, which greatly improves the crushing effect. By arranging two collecting devices, the raw materials with different particle sizes after crushing can be collected separately. The finished powder after crushing is collected by a sealed spiral feeding device to avoid the safety hazard caused by the scattering of metal dust. The powder metallurgy special defective product crushing and recovery device of the utility model has a simple structure and good crushing quality. It can not only realize the complete crushing of powder metallurgy raw materials, but also realize the separate collection of crushed products with different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the structure of a powder metallurgy special defective product crushing and recovery device of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the first crushing mechanism in a powder metallurgy special defective product crushing and recovery device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the second crushing mechanism in a powder metallurgy special defective product crushing and recovery device of the utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure of the first crushing mechanism, the second crushing mechanism and the collecting mechanism in a powder metallurgy special defective product crushing and recovery device of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the internal structure of the first crushing mechanism, the second crushing mechanism and the collecting mechanism in a powder metallurgy special defective product crushing and recovery device.

[0022] In the figure, 1-frame; 2-feeding mechanism; 21-feeding bin; 22-stocking bin; 3-dust removal mechanism; 31-connecting pipe; 32-dust outlet; 4-first crushing mechanism; 41-outer cover; 42-first screen; 43-crushing roller; 431-first crushing tooth; 44-first driving device; 5-second crushing mechanism; 51-base; 511-third crushing tooth; 52-roller; 521-first roller; 522-second roller; 523-second crushing tooth; 53-second driving device; 6-collecting mechanism; 7-first collecting device; 71-discharging funnel; 72-second screen; 8-second collecting device; 81-second discharging port; 9-screw feeding device; 91-shaft cylinder; 92-feeding shaft; 93-spiral blade; 94-third driving device; 95-first discharging port. DETAILED DESCRIPTION

[0023] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Reference Figure 1 The structure diagram of a powder metallurgy special defective product crushing and recycling device is shown in the figure, which comprises a frame 1, a feeding mechanism 2 fixedly arranged on the frame 1 for feeding powder metallurgy defective products, a dust removal mechanism 3 arranged on the upper part of the feeding mechanism 2 for absorbing impurities and dust on the surface of the metallurgical parts, a first crushing mechanism 4 arranged at the discharge port of the feeding mechanism 2, a second crushing mechanism 5 arranged at the lower part of the first crushing mechanism 4, and a collecting mechanism 6 arranged below the second crushing mechanism 5 for collecting the crushed powder. The double crushing mechanism can make the raw material crushing more complete, greatly improving the crushing efficiency. In order to improve the crushing effect, the dust removing mechanism 3 is fixedly arranged on the side of the feeding mechanism 2, and the dust outlet 32 ​​of the dust removing mechanism 3 is arranged directly below the dust removing mechanism 3. The dust removing mechanism 3 is a pulse dust collector. By arranging a pulse dust collector at the front end of the crushing mechanism (a pulse dust collector commonly available on the market), the dust impurities on the surface of the raw materials can be removed to the greatest extent to improve the cleanliness of the raw materials. The collecting mechanism 6 includes a first collecting device 7 for sealing and collecting metallurgical powder after complete crushing and a second collecting device 8 for collecting metallurgical particles after incomplete crushing. By arranging two collecting devices, raw materials of different particle sizes after crushing can be collected separately.

[0025] The feeding mechanism 2 is in the shape of a drawer and is fixed on the upper part of the frame 1 at an angle from high to low, and the end is fixedly and sealedly connected to the feeding port of the first crushing mechanism 4. The feeding mechanism 2 includes a feeding bin 21 and a stacking bin 22 with an open top. The height of the stacking bin 22 is greater than the height of the feeding bin 21. The structure inclined from high to low can facilitate the automatic feeding of powder metallurgy defective products. The connecting pipe 31 in the dust removal mechanism 3 is connected to the top of the stacking bin 22. The connecting pipe 31 is arranged above the stacking bin 22 to absorb dust impurities on the surface of the raw material to the greatest extent.

[0026] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, there are a schematic diagram of the structure of the first crushing mechanism in a powder metallurgy defective product crushing and recovery device; a schematic diagram of the structure of the second crushing mechanism; a schematic diagram of the connection structure of the first crushing mechanism, the second crushing mechanism and the collecting mechanism; a schematic diagram of the internal structure of the first crushing mechanism, the second crushing mechanism and the collecting mechanism, wherein the first crushing mechanism 4 includes a cylindrical outer cover 41, a cylindrical first screen 42 fixedly arranged in the outer cover 41, a crushing roller 43 rotatably arranged at the center of the first crushing mechanism 4 and a first driving device 44 for driving the crushing roller 43 to rotate, the first driving device 44 is a driving motor, and the outer surface of the crushing roller 43 is evenly ringed with first crushing teeth 431 in the shape of shark fins. The structure of the crushing roller 43 in combination with the first screen 42 can crush the powder metallurgy defective raw materials to the greatest extent.

[0027] The second crushing mechanism 5 includes a base 51 which is arranged at the lower part of the first crushing mechanism 4 and is in a quadrangular pyramid shape and fixedly connected to the outer cover 41, a roller 52 rotatably arranged in the base 51, and a second driving device 53 for driving the roller 52 to rotate to realize secondary crushing of metallurgical particles. The second driving device 53 can be driven by a single motor. The structure of the gear group connected to the roller 52 can ensure the synchronization of the rotation of the roller 52. The roller 52 includes a first roller 521 and a second roller 522. The first roller 521 and the second roller 522 are evenly provided with second crushing teeth 523 on the roller bodies. The second crushing teeth 523 on the first crushing roller 43 and the second crushing roller 43 are arranged alternately. The inner wall of the base 51 is also fixedly provided with third crushing teeth 511 for cooperating with the crushing teeth to realize the crushing action. The first roller 521, the second roller 522 and the base 51 cooperate to form the second crushing mechanism 5. This crushing structure can perform secondary crushing on the particles that are not completely crushed in the first crushing mechanism 4, thereby ensuring the uniformity of raw material crushing to the greatest extent.

[0028] The first collecting device 7 includes a discharging hopper 71 arranged directly below the second crushing mechanism 5, a second screen 72 on the upper part of the discharging hopper 71 which is fixedly arranged and inclined, and a discharging mechanism connected to the lower part of the discharging hopper 71. The sieve holes of the second screen 72 are smaller than the sieve holes of the first screen 42. The discharging mechanism is a spiral discharging device fixedly connected to the frame 1 and connected to the discharging end of the discharging hopper 71. The finished powder after crushing is collected by a sealed spiral feeding device 9 to avoid the safety hazard caused by the scattering of metal dust. The spiral feeding device 9 includes a shaft cylinder 91, a feeding shaft 92 rotatably arranged in the shaft cylinder 91, a spiral blade 93 arranged on the outer surface of the feeding shaft 92, and a third driving device 94 for driving the feeding shaft 92 to rotate. The third driving device 94 is a linear motor. A first discharging port 95 is opened on the top side of the shaft cylinder 91. The second collecting device 8 includes a discharging channel which is connected to the top surface of the second screen 72 and is arranged in an inclined manner, and a second discharging port 82 which is arranged at the end of the discharging channel and opens downward.

[0029] The utility model discloses a powder metallurgy special defective product crushing and recovery device with simple structure and good crushing quality, which can not only realize complete crushing of powder metallurgy raw materials, but also realize separate collection of crushed products with different particle sizes.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A powder metallurgy special defective product crushing and recovery device, characterized by: It includes a frame, a feeding mechanism fixed on the frame for feeding powder metallurgy defective products, a dust removal mechanism arranged on the upper part of the feeding mechanism for absorbing impurities and dust on the surface of metallurgical parts, a first crushing mechanism arranged at the discharge port of the feeding mechanism, a second crushing mechanism arranged at the lower part of the first crushing mechanism, and a collecting mechanism arranged below the second crushing mechanism for collecting crushed powder, wherein the collecting mechanism includes a first collecting device for sealingly collecting metallurgical powder after complete crushing and a second collecting device for collecting metallurgical particles after incomplete crushing.

2. The powder metallurgy special defective product crushing and recovery device according to claim 1 is characterized by: The feeding mechanism is drawer-shaped and is fixed on the upper part of the frame at an angle from high to low, and the end is fixedly and sealedly connected to the feeding port of the first crushing mechanism. The feeding mechanism includes a feeding bin and a stacking bin with an open top structure. The height of the stacking bin is greater than the height of the feeding bin. The connecting pipe in the dust removal mechanism is connected directly above the stacking bin.

3. A powder metallurgy special defective product crushing and recovery device according to claim 1 or 2, characterized in that: The first crushing mechanism includes a cylindrical outer cover, a first cylindrical screen fixedly arranged in the outer cover, a crushing roller rotatably arranged at the center of the first crushing mechanism, and a first driving device for driving the crushing roller to rotate. The outer surface of the crushing roller is evenly surrounded by first crushing teeth in the shape of shark fins.

4. The powder metallurgy special defective product crushing and recovery device according to claim 3 is characterized by: The second crushing mechanism includes a base in the shape of a quadrangular pyramid arranged at the lower part of the first crushing mechanism and fixedly connected to the outer cover, a roller rotatably arranged in the base, and a second driving device that drives the roller to rotate to achieve secondary crushing of metallurgical particles. The roller includes a first roller and a second roller, and the first roller and the second roller are evenly provided with second crushing teeth on the roller bodies. The second crushing teeth on the first crushing roller and the second crushing roller are arranged alternately. Third crushing teeth that cooperate with the crushing teeth to achieve crushing action are also fixedly provided on both sides of the inner wall of the base. The first roller, the second roller and the base cooperate to form a second crushing mechanism.

5. A powder metallurgy special defective product crushing and recovery device according to claim 1 or 2, characterized in that: The dust removal mechanism is fixedly arranged on the side of the feeding mechanism, the dust outlet of the dust removal mechanism is arranged directly below the dust removal mechanism, and the dust removal mechanism is a pulse dust collector.

6. The powder metallurgy defective product crushing and recovery device according to claim 3 is characterized in that: The first collecting device includes a discharge funnel arranged directly below the second crushing mechanism, a second screen at the upper part of the discharge funnel which is tilted and fixed, and a discharge mechanism connected to the lower part of the discharge funnel, wherein the mesh of the second screen is smaller than the mesh of the first screen.

7. The powder metallurgy defective product crushing and recovery device according to claim 6 is characterized by: The discharging mechanism is a spiral feeding device fixedly connected to the frame and connected to the discharging end of the discharging funnel. The spiral feeding device includes a shaft cylinder, a feeding shaft rotatably arranged in the shaft cylinder, spiral blades arranged on the outer surface of the feeding shaft and a third driving device for driving the feeding shaft to rotate. A first discharging port is opened on the top side of the shaft cylinder.

8. The powder metallurgy defective product crushing and recovery device according to claim 6 is characterized by: The second collecting device comprises a discharge channel connected with the top surface of the second screen and arranged in an inclined manner, and a second discharge port arranged at the end of the discharge channel and opening downward.

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