Screening device for tungsten powder production

Abstract

The screening device for tungsten powder production comprises an arc-shaped plate, multiple sets of evenly-distributed screening seams are formed in the arc-shaped plate, mounting plates are fixedly connected to the left end and the right end of the arc-shaped plate, rotating shafts are fixedly connected to the middles of the side walls, away from each other, of the two sets of mounting plates, and the rotating shafts penetrate through and are rotationally connected to the middles of the left wall and the right wall of a machine shell. An opening is formed in the lower side of the middle of the rear wall of the machine shell, a connecting plate is arranged on the inner side of the opening, a plurality of evenly-distributed dredging plates are fixedly connected to the front wall of the connecting plate, a grip is fixedly connected to the middle of the rear wall of the connecting plate, and the gears are all in meshed connection with the bottom tooth grooves. According to the screening device for tungsten powder production, when the screening seam is blocked, the grip is pushed forwards to enable the connecting plate and the dredging plate to move forwards, the dredging plate is inserted into the inner side of the screening seam to dredge the screening seam, the influence of blocking of the screening seam on tungsten powder screening is reduced, and the tungsten powder screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tungsten powder screening technology, specifically a screening device for tungsten powder production. Background Technology

[0002] Tungsten powder is powdered metallic tungsten, which is used as a raw material for preparing tungsten processed materials, tungsten alloys and tungsten products. The properties of tungsten powder have a direct impact on the production of tungsten materials and the quality of tungsten powder metallurgy products, especially the effects of purity and particle size. Therefore, sieving devices are needed to sieve tungsten powder during the production process.

[0003] In the existing technology, tungsten powder screening devices usually use vibrating sieving. Although this screening method is highly efficient, the screen is prone to clogging by large-sized tungsten powder during the screening process, which reduces the practicality of the screening device. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] This utility model discloses a screening device for tungsten powder production, including a housing, and an anti-clogging mechanism is provided on the inner side of the housing.

[0006] The anti-clogging mechanism includes an arc-shaped plate with multiple sets of evenly distributed sieve slots inside. Mounting plates are fixedly connected to both ends of the arc-shaped plate. A rotating shaft is fixedly connected to the middle of the side wall of each of the two sets of mounting plates, which are located away from each other. The rotating shafts pass through and are rotatably connected to the middle of the left and right walls of the machine casing. Gears are fixedly connected to the ends of the two sets of rotating shafts, which are located away from each other. An opening is provided on the lower side of the middle of the rear wall of the machine casing. A connecting plate is provided inside the opening. Multiple sets of evenly distributed unblocking plates are fixedly connected to the front wall of the connecting plate. A handle is fixedly connected to the middle of the rear wall of the connecting plate.

[0007] As a preferred technical solution of this utility model, all the gears are meshed with the bottom tooth grooves, and the tooth grooves are respectively arranged on the left and right sides of the top of the U-shaped plate and are evenly distributed.

[0008] As a preferred embodiment of this utility model, a cylinder is fixedly connected to the middle of the front wall of the U-shaped plate, and the output end of the cylinder is fixedly connected to the middle of the outer front wall of the machine housing.

[0009] As a preferred embodiment of this utility model, the sieve slots are all fitted with the clearance plate, and support rods are fixedly connected to the four corners of the bottom wall of the machine casing.

[0010] As a preferred technical solution of this utility model, a discharge port is provided in the middle of the bottom wall of the housing, and the discharge port is located in the upper middle part of the inner side of the four sets of support rods.

[0011] As a preferred embodiment of this utility model, a feed hopper is connected through and fixedly connected to the middle of the top wall of the casing, and the output end of the feed hopper is located at the top of the arc-shaped plate.

[0012] As a preferred embodiment of this utility model, the U-shaped plate is disposed on the outer side of the middle part of the front wall of the housing, and the U-shaped plate is fitted with the housing with a clearance.

[0013] The beneficial effects of this utility model are:

[0014] 1. This sieving device for tungsten powder production works by pouring tungsten powder into the machine casing from the feed hopper when sieving is required. The cylinder is then activated, and the cylinder output extends and retracts, causing the U-shaped plate to move back and forth. During the movement of the U-shaped plate, the tooth groove moves back and forth, thereby causing the gear to rotate reciprocally. During the rotation of the gear, the arc plate swings under the action of the rotating shaft, causing the tungsten powder to roll on the top of the arc plate, thus sieving the tungsten powder. Compared with a vibrating screen, this reduces the possibility of screen gap blockage.

[0015] 2. This sieving device for tungsten powder production, when the screen gap is blocked, pushes the handle forward to move the connecting plate and the unblocking plate forward, inserts the unblocking plate into the inside of the screen gap to unblock the screen gap, reduces the impact of screen gap blockage on tungsten powder sieving, and improves tungsten powder sieving efficiency. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a side view of the overall structure of a sieving device for tungsten powder production according to this utility model;

[0018] Figure 2 This is a front view schematic diagram of the overall structure of a sieving device for tungsten powder production according to this utility model;

[0019] Figure 3 This is a bottom view schematic diagram of the overall structure of a sieving device for tungsten powder production according to this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of a sieving device for tungsten powder production according to this utility model.

[0021] In the diagram: 1. Machine casing; 2. Anti-clogging mechanism; 3. Feed hopper; 4. Rotary shaft; 5. Mounting plate; 6. Arc plate; 7. Screen slot; 8. Gear; 9. U-shaped plate; 10. Gear groove; 11. Cylinder; 12. Support rod; 13. Discharge port; 14. Opening; 15. Unblocking plate; 16. Connecting plate; 17. Handle. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] Example: Figures 1-4 As shown, the present invention provides a sieving device for tungsten powder production, including a housing 1, and an anti-clogging mechanism 2 is provided on the inner side of the housing 1.

[0024] The anti-clogging mechanism 2 includes an arc-shaped plate 6. The arc-shaped plate 6 has multiple sets of evenly distributed sieve slots 7 inside. The sieve slots 7 allow tungsten powder of the correct size to fall through and block tungsten powder of the wrong size. Mounting plates 5 are fixedly connected to both ends of the arc-shaped plate 6. A rotating shaft 4 is fixedly connected to the middle of the side wall of each of the two sets of mounting plates 5. The rotating shaft 4 passes through and is rotatably connected to the middle of the left and right walls of the casing 1. The rotating shaft 4 serves to connect and fix the mounting plates 5 to the gears 8. The gears 8 are fixedly connected to the ends of the two sets of rotating shafts 4. An opening 14 is provided on the lower side of the middle of the rear wall of the casing 1. A connecting plate 16 is provided inside the opening 14. The opening 14 provides space for the connecting plate 16 and the unblocking plate 15 to move back and forth inside. Multiple sets of evenly distributed unblocking plates 15 are fixedly connected to the front wall of the connecting plate 16. A handle 17 is fixedly connected to the middle of the rear wall of the connecting plate 16. The handle 17 reduces the difficulty of gripping the connecting plate 16.

[0025] Among them, the gears 8 are all meshed with the bottom tooth grooves 10. The tooth grooves 10 are respectively set on the left and right sides of the top of the U-shaped plate 9 and are evenly distributed. During the back and forth movement of the U-shaped plate 9, the top gears 8 can be rotated through the tooth grooves 10.

[0026] A cylinder 11 is fixedly connected to the middle of the front wall of the U-shaped plate 9. The output end of the cylinder 11 is fixedly connected to the middle of the outer front wall of the housing 1. During operation, the cylinder 11 can drive the U-shaped plate 9 to move back and forth, thereby causing the tooth groove 10 to move back and forth, and thus driving the gear 8 and the rotating shaft 4 to rotate.

[0027] Among them, the sieve slots 7 are all fitted with the unblocking plate 15 with a clearance. Support rods 12 are fixedly connected at the four corners of the bottom wall of the machine casing 1. The support rods 12 can support and fix the machine casing 1 and its internal components. The sieve slots 7 and the unblocking plate 15 correspond one-to-one. The unblocking plate 15 can be inserted into the corresponding sieve slot 7 to push out and clean the tungsten powder stuck in the sieve slot 7.

[0028] The bottom wall of the casing 1 is provided with a discharge port 13. The discharge port 13 is located in the upper middle part of the inner side of the four sets of support rods 12. The support rods 12 provide space between the discharge port 13 and the ground, so that the sieved tungsten powder can fall from the inside of the discharge port 13. A collection device is provided at the bottom of the discharge port 13 to collect the sieved tungsten powder.

[0029] The top wall of the casing 1 is connected to a feed hopper 3 through and fixedly connected. The output end of the feed hopper 3 is located at the top of the arc plate 6. The feed hopper 3 enables tungsten powder to enter the interior of the casing 1 from the feed hopper 3.

[0030] The U-shaped plate 9 is located on the outer side of the middle part of the front wall of the housing 1. The U-shaped plate 9 is in clearance fit with the housing 1, and the U-shaped plate 9 can move back and forth on the outer side of the housing 1 without being obstructed by the housing 1.

[0031] Working principle: When tungsten powder needs to be screened, the tungsten powder is poured into the machine casing 1 from the feed hopper 3 and then the cylinder 11 is started. The output end of the cylinder 11 extends and retracts, causing the U-shaped plate 9 to move back and forth. During the back and forth movement of the U-shaped plate 9, the tooth groove 10 moves back and forth, thereby causing the gear 8 to rotate reciprocally. During the rotation of the gear 8, under the action of the rotating shaft 4, the arc plate 6 swings, causing the tungsten powder to roll on the top of the arc plate 6, thus screening the tungsten powder. Compared with the vibrating screen, the possibility of screen gap 7 being blocked is reduced. When the screen gap 7 is blocked, the handle 17 is pushed forward to move the connecting plate 16 and the unblocking plate 15 forward, inserting the unblocking plate 15 into the inside of the screen gap 7 to unblock the screen gap 7, reducing the impact of screen gap 7 blockage on tungsten powder screening and improving the tungsten powder screening efficiency.

[0032] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sieving device for tungsten powder production, comprising a housing (1), characterized in that: An anti-blocking mechanism (2) is provided on the inner side of the housing (1); The anti-clogging mechanism (2) includes an arc plate (6), which has multiple sets of evenly distributed sieve slots (7) inside. The arc plate (6) is fixedly connected to the left and right ends of the arc plate (6). The two sets of mounting plates (5) are fixedly connected to the middle of the side wall away from each other. The rotating shafts (4) pass through and are rotatably connected to the middle of the left and right walls of the housing (1). The two sets of rotating shafts (4) are fixedly connected to the ends away from each other. The lower side of the middle of the rear wall of the housing (1) is provided with an opening (14). The inner side of the opening (14) is provided with a connecting plate (16). The front wall of the connecting plate (16) is fixedly connected to multiple sets of evenly distributed unblocking plates (15). The middle of the rear wall of the connecting plate (16) is fixedly connected to a handle (17).

2. The sieving device for tungsten powder production according to claim 1, characterized in that, The gears (8) are all meshed with the bottom tooth grooves (10), which are respectively set on the left and right sides of the top of the U-shaped plate (9) and evenly distributed.

3. The sieving device for tungsten powder production according to claim 2, characterized in that, A cylinder (11) is fixedly connected to the middle of the front wall of the U-shaped plate (9), and the output end of the cylinder (11) is fixedly connected to the middle of the outer front wall of the housing (1).

4. The sieving device for tungsten powder production according to claim 1, characterized in that, The sieve slots (7) are all fitted with the unblocking plate (15) with a clearance, and the four corners of the bottom wall of the machine casing (1) are all fixedly connected with support rods (12).

5. A sieving device for tungsten powder production according to claim 1, characterized in that, The bottom wall of the housing (1) is provided with a discharge port (13), which is located in the upper middle part of the inner side of the four sets of support rods (12).

6. A sieving device for tungsten powder production according to claim 1, characterized in that, The top wall of the casing (1) is connected to a feed hopper (3) that runs through and is fixedly connected to it. The output end of the feed hopper (3) is located at the top of the arc plate (6).

7. A sieving device for tungsten powder production according to claim 2, characterized in that, The U-shaped plate (9) is disposed on the outer side of the middle part of the front wall of the housing (1), and the U-shaped plate (9) is clearance-fitted with the housing (1).

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