Classified screening device for metal powder

Abstract

The utility model discloses a metal powder grading screening device, which relates to the technical field of metal powder screening, and comprises a vibration base, the top of the vibration base is connected with an outer cylinder by adopting a plurality of groups of springs, three groups of screen assemblies are assembled in the outer cylinder, and a collecting cylinder is assembled at the center position of the bottom of each group of screen assembly; a notch is reserved in the curved surface outer wall of the outer barrel, an arc door is rotationally connected into the notch, and a supporting rod fixed to the curved surface outer wall of the arc door is arranged at the bottom of the collecting barrel. The condition that height difference exists between the edge and the middle of the screen is utilized, metal powder surges from outside to inside in cooperation with the vibration base, the situation that the screen is blocked by the metal powder can be avoided, the walking path of the metal powder is prolonged, the purpose of sufficient screening is achieved, meanwhile, screened particles can be collected one by one, and the screening efficiency is improved. And the screened metal powder can be conveniently and rapidly taken out manually, so that the screening efficiency of the metal powder is higher.

Description

Technical Field

[0001] This utility model relates to the field of metal powder screening technology, specifically a metal powder grading and screening device. Background Technology

[0002] Metal powders can be used in the synthesis and preparation of metallurgical materials. Metal powders are generally obtained by grinding in a ball mill. However, the metal powders obtained by grinding cannot be used directly. They need to be sieved before they can be processed and used.

[0003] Metal powder needs to be screened using screening equipment, usually a vibrating screen. The metal powder is poured from the top opening of the vibrating screen and falls onto the screen mesh inside the screen. The vibrating screen is then started to vibrate and screen the metal powder according to particle size. After screening, the particles are discharged from the discharge pipe next to the screen mesh.

[0004] However, using the vibration of the screen to transport and discharge the sieved metal powder makes it difficult to guarantee the complete discharge of the metal powder. In some cases, the screens need to be manually removed and cleaned one by one, which can cause dust to be inhaled by personnel and also slows down the sieving process of metal powder. Therefore, a metal powder grading and sieving device is proposed. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a metal powder grading and screening device to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a metal powder grading and sieving device, comprising a vibrating base, an outer cylinder connected to the top of the vibrating base by multiple sets of springs, and three sets of screen assemblies assembled inside the outer cylinder, with a collecting cylinder assembled at the bottom center of each set of screen assemblies.

[0007] The outer wall of the outer cylinder has a notch, and an arc-shaped door is rotatably connected inside the notch. The bottom of the collecting cylinder is provided with a support rod that is fixed to the outer wall of the arc-shaped door. The end of the support rod is provided with a positioning plate that is snapped into the bottom of the collecting cylinder.

[0008] As a preferred technical solution, the screen assembly includes an outer ring fixed to the inner wall of the outer cylinder, a screen is fixed to the curved inner wall of the outer ring, and multiple sets of herringbone strips are fixed to the screen in a ring array. An arc-shaped strip group is fixed to the inner side of the multiple sets of herringbone strips at the top of the screen, and a discharge hole is opened at the center of the top of the screen.

[0009] As a preferred technical solution, the top of the screen is concave from the edge to the center.

[0010] As a preferred technical solution, the top of the positioning disk is provided with a boss, and a rubber ring is fixed on the curved outer wall of the boss. The bottom of the collecting cylinder is reserved with a positioning groove that matches the boss, and the curved outer wall of the positioning groove is provided with an annular groove that matches the rubber ring.

[0011] As a preferred technical solution, the arc-shaped door and the outer wall of the outer cylinder are fixed by a locking mechanism.

[0012] As a preferred technical solution, a guide cone is fixed to the top of the outer cylinder, and an inner cone is fixed inside the guide cone. The top of the inner cone and the inner wall of the guide cone form a material discharge channel.

[0013] As a preferred technical solution, each set of screens is equipped with two sets of fan-shaped guide cones at the bottom. One set of fan-shaped guide cones is fixed at the bottom of the screen near the center, and the other set of fan-shaped guide cones is fixed on the curved inner wall of the arc-shaped door.

[0014] In summary, the present invention has the following main advantages:

[0015] This invention utilizes the height difference between the edge and center of the screen, combined with a vibrating base, to cause the metal powder to surge from the outside to the inside. This avoids clogging the screen and extends the path of the metal powder, achieving thorough sieving. Simultaneously, the sieved particles can be collected one by one, facilitating quick and easy manual removal of the sieved metal powder, thus resulting in high metal powder sieving efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a bottom view of the outer cylinder of this utility model when unfolded;

[0018] Figure 3 This is a three-dimensional sectional view of the outer cylinder of this utility model;

[0019] Figure 4 This is a schematic diagram of the screen assembly structure of this utility model;

[0020] Figure 5 This is a bottom view of the screen assembly of this utility model.

[0021] In the picture: 100, vibration base;

[0022] 110. Outer cylinder; 111. Notch; 120. Arc-shaped gate; 130. Guide cone; 131. Inner cone; 140. Screen assembly; 141. Outer ring; 142. Screen; 143. Herringbone strip; 144. Arc-shaped strip group; 145. Discharge hole; 150. Collection cylinder; 151. Positioning plate; 152. Support rod; 153. Positioning groove; 160. Fan-shaped guide cone. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The embodiments of this utility model will be described below based on its overall structure.

[0025] A metal powder grading and sieving device, such as Figures 1 to 5 As shown, the device includes a vibrating base 100, with an outer cylinder 110 connected to the top of the vibrating base 100 by multiple sets of springs. Three sets of screen assemblies 140 are installed inside the outer cylinder 110, and a collecting cylinder 150 is installed at the bottom center of each set of screen assemblies 140.

[0026] The outer wall of the outer cylinder 110 has a notch 111, and an arc-shaped door 120 is rotatably connected inside the notch 111. The bottom of the collection cylinder 150 is provided with a support rod 152 that is fixed to the outer wall of the arc-shaped door 120. The end of the support rod 152 is provided with a positioning plate 151 that is snapped into the bottom of the collection cylinder 150.

[0027] The screen assembly 140 includes an outer ring 141 fixed to the inner wall of the outer cylinder 110. A screen 142 is fixed to the curved inner wall of the outer ring 141. Multiple sets of herringbone strips 143 are fixed in a ring array at the top of the screen 142. Arc-shaped strip groups 144 are fixed on the inner side of the multiple sets of herringbone strips 143 at the top of the screen 142. A discharge hole 145 is opened at the center of the top of the screen 142.

[0028] The top of the screen 142 is concave from the edge to the center.

[0029] Metal powder is poured in from the center of the top of the guide cone 130, and the metal powder will be placed on the screen assembly 140 in a funnel shape. Because the middle of the screen 142 is concave, the vibrating base 100 will drive the outer cylinder 110 and the screen assembly 140 to vibrate synchronously. Therefore, the metal dust will gradually flow into the feed hole 145. The herringbone strips 143 and the arc-shaped strip group 144 block the movement path of the metal dust, making the path of the metal dust into the feed hole 145 longer, indirectly extending the flow of the metal dust. The sieving time of the dust can improve the sieving quality of the dust. Finally, particles larger than the aperture of the screen 142 will enter the collection cylinder 150 through the feed hole 145, while the dust that passes through the screen 142 continues to fall to the top edge of the lower screen 142 and will continue to the feed hole 145 to complete the sieving purpose (it is worth noting that the aperture of the three sets of screens 142 gradually decreases from top to bottom). The powder will enter the three sets of collection cylinders 150 one by one, while the powder at the bottom of the outer cylinder 110 will wait for a certain amount to be stored and cleaned.

[0030] After screening, the arc-shaped door 120 is opened manually. The collection cylinder 150 is moved out of the outer cylinder 110 through the notch 111 via the positioning plate 151 and the support rod 152. The collection cylinders 150 can then be removed one by one by the manual.

[0031] Please refer to this carefully. Figure 4 and Figure 5 The top of the positioning plate 151 is provided with a boss, and a rubber ring is fixed on the curved outer wall of the boss. The bottom of the collecting cylinder 150 is reserved with a positioning groove 153 that matches the boss. The curved outer wall of the positioning groove 153 is provided with an annular groove that matches the rubber ring.

[0032] The boss and positioning groove 153 are used to increase the connection force between the two. At the same time, with the support of the rubber ring, the positioning plate 151 enters the outer cylinder 110 as the arc door 120 is opened and closed.

[0033] Please refer to this carefully. Figure 1 and Figure 2 The outer walls of the curved door 120 and the outer cylinder 110 are fixed by a locking mechanism.

[0034] Increase the connection force between the arc-shaped door 120 and the outer cylinder 110 to seal the gap 111 and ensure that there is no leakage when screening metal powder.

[0035] Please refer to this carefully. Figure 1 The top of the outer cylinder 110 is fixed with a guide cone 130, and the inner cone 131 is fixed inside the guide cone 130. The top of the inner cone 131 and the inner wall of the guide cone 130 form a material discharge channel.

[0036] This causes the metal powder entering through the channel to be fed in a funnel shape, so that it can fall first at the edge of the screen 142. With the help of the vibrating base 100, the metal powder can be moved from the outside to the inside of the top of the screen 142.

[0037] Please refer to this carefully. Figure 2 Each set of screens 142 is equipped with two sets of fan-shaped guide cones 160 at the bottom. One set of fan-shaped guide cones 160 is fixed at the bottom of the screen 142 near the center, and the other set of fan-shaped guide cones 160 is fixed on the curved inner wall of the arc-shaped door 120.

[0038] The metal dust falling from the upper screen 142 is guided to fall at the edge of the lower screen 142, achieving the final screening purpose. The setting of two sets of fan-shaped guide cones 160 allows the collection cylinder 150 to enter and exit the outer cylinder 110 without restriction.

[0039] In use, metal powder is poured into the center of the top of the guide cone 130. The metal powder will be placed on the screen assembly 140 in a funnel shape. Because the center of the screen 142 is concave, the vibrating base 100 will drive the outer cylinder 110 and the screen assembly 140 to vibrate synchronously. Therefore, the metal dust will gradually flow into the feed hole 145. The herringbone strips 143 and the arc-shaped strip group 144 block the movement path of the metal dust, making the path of the metal dust into the feed hole 145 longer, indirectly extending the flow time. The sieving time for dust can improve the sieving quality. Particles larger than the aperture of screen 142 will enter the collection cylinder 150 through the feed hole 145. The dust that passes through screen 142 continues to fall to the top edge of the lower screen 142 and will continue to the feed hole 145 to complete the sieving purpose (it is worth noting that the aperture of the three sets of screens 142 gradually decreases from top to bottom). The powder will enter the three sets of collection cylinders 150 one by one, while the powder at the bottom of the outer cylinder 110 will wait for a certain amount to be stored and cleaned.

[0040] After screening, the arc-shaped door 120 is opened manually. The collection cylinder 150 is moved out of the outer cylinder 110 through the notch 111 via the transmission of the positioning plate 151 and the support rod 152. The collection cylinders 150 can be removed manually one by one. The parts not involved in this device are the same as or can be implemented using existing technology.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, but such modifications, substitutions, and variations are protected by patent law as long as they fall within the scope of the claims of the present invention.

Claims

1. A metal powder fractionating screening apparatus comprising a vibrating base (100), characterised in that: The top of the vibration base (100) is connected with an outer cylinder (110) through a plurality of groups of springs, the inner part of the outer cylinder (110) is equipped with three groups of screen assembly (140), the bottom center position of each group of screen assembly (140) is equipped with a collecting cylinder (150) The curved outer wall of the outer cylinder (110) is reserved with a gap (111), the gap (111) is rotatably connected with an arc-shaped door (120), the bottom of the collecting cylinder (150) is provided with a support rod (152) fixed with the curved outer wall of the arc-shaped door (120), and the end of the support rod (152) is clamped with a positioning disc (151) on the bottom of the collecting cylinder (150).

2. A metal powder fractionating screening device according to claim 1, characterized in that: The screen assembly (140) includes an outer ring (141) fixed to the inner wall of the outer cylinder (110), the curved inner wall of the outer ring (141) is fixed with a screen (142), the top of the screen (142) is fixed with a plurality of groups of herringbone strips (143) in an annular array, the inner side of the plurality of groups of herringbone strips (143) is fixed with an arc-shaped strip group (144) on the top of the screen (142), and the top center position of the screen (142) is provided with a discharging hole (145).

3. A metal powder fractionating screening device according to claim 1, characterized in that: The top of the screen (142) is recessed from the edge to the center.

4. A metal powder fractionating screening device according to claim 1, characterized in that: The top of the positioning disc (151) is provided with a boss, and the curved outer wall of the boss is fixed with a rubber ring, the bottom of the collecting cylinder (150) is reserved with a positioning groove (153) matched with the boss, and the curved outer wall of the positioning groove (153) is provided with a ring groove matched with the rubber ring.

5. A metal powder fractionating screening device according to claim 1, characterized in that: The arc-shaped door (120) and the outer wall of the outer cylinder (110) are fixed in a lock buckle manner.

6. A metal powder fractionating screening device according to claim 1, characterized in that: The top of the outer cylinder (110) is fixed with a flow guide cone (130), the inner part of the flow guide cone (130) is fixed with an inner cone cylinder (131), and the top of the inner cone cylinder (131) and the inner wall of the flow guide cone (130) form a discharging channel.

7. A metal powder fractionating screening apparatus according to claim 1, wherein: The bottom of each group of screen (142) is equipped with two groups of fan-shaped guide cones (160), one group of fan-shaped guide cones (160) is fixed to the bottom of the screen (142) near the center position, and the other group of fan-shaped guide cones (160) is fixed to the curved inner wall of the arc-shaped door (120).

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