Airflow classifier for classifying alloy powder

Abstract

The utility model discloses an airflow classifier for alloy powder classification, which relates to the technical field of alloy powder classification and comprises a casing, a feed pipe is fixedly connected to the top of one side of the casing, and a first filter screen and a second filter screen are fixedly mounted in the casing. An air blowing assembly is arranged at the top end of the machine shell, a first breast board and a second breast board are fixedly connected to the inner walls of the two ends of the machine shell, three discharging ports are formed in the bottom end of the machine shell, and a blocking plate is slidably connected to the right side wall of the machine shell. According to the airflow classifier for alloy powder classification, the air blowing assembly is arranged, so that metal powder can rapidly pass through the two layers of filter screens to be screened and discharged, and the screening and discharging efficiency is improved; the two discharging channels are formed by arranging the two breast boards in the machine shell, and the two discharging channels are blocked through the blocking plates, so that metal powder which is not screened by the filter screen can be prevented from being directly mixed and discharged through the two discharging channels, and the screening accuracy of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy powder classification, and specifically relates to an air classifier for alloy powder classification. Background Technique

[0002] Alloy powder refers to metal powder formed by alloying two or more metals. Alloy powder is widely used in the fields of military, aerospace, chemical industry, metallurgy, building materials, etc., and has a very broad market prospect. In the process of preparing alloy powder, the commonly used powder-making method is vacuum atomization method. Specifically, the alloy is melted at high temperature under vacuum conditions, and then atomized into powder under the protection of inert gas. However, the particle sizes of the alloy powder produced by atomization vary greatly. In order to meet the needs of the military, aerospace and fine chemical industries, etc., the alloy powder must be sent to a classification device for screening and classification to produce alloy powder with a relatively narrow particle size distribution range. However, the existing alloy powder classifiers still have certain defects when in use;

[0003] For example, the TC4 titanium alloy powder collection device with the publication number of CN218424078U can precisely screen the powder produced by the processing of TC4 titanium alloy powder by opening multiple screening and collection chambers inside the powder collection box, classify and collect it, and improve the production effect of subsequent hot pressing of TC4 titanium alloy powder into rods. The pore diameters inside the filter plate, the first screening filter screen and the second screening filter screen are from large to small from top to bottom. Therefore, it is convenient to realize the classification and collection of TC4 titanium alloy powder. Through the setting of the sensing mechanism, the TC4 titanium alloy powder can be driven to vibrate and feed, improving the feeding speed;

[0004] In the actual use process of this device, vibration feeding is carried out through the sensing mechanism. However, this method not only has a low screening and feeding efficiency, but also, during the screening process, since the screening and collection chamber is connected to the discharge pipes on both sides, some metal powder will directly discharge from the discharge pipes on both sides without being screened, resulting in a reduction in screening accuracy;

[0005] In view of the above problems, it is urgent to innovate and design on the basis of the original equipment. Therefore, we have proposed an air classifier for alloy powder classification that can well solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide an air classifier for alloy powder classification to solve the problem proposed in the above background technique that in the actual use process of this device, vibration feeding is carried out through the sensing mechanism. However, this method not only has a low screening and feeding efficiency, but also, during the screening process, since the screening and collection chamber is connected to the discharge pipes on both sides, some metal powder will directly discharge from the discharge pipes on both sides without being screened, resulting in a reduction in screening accuracy.

[0007] To achieve the above object, the utility model provides the following technical solution: an air classifier for alloy powder classification, including a machine shell, one side top of the machine shell is fixedly connected with a feed pipe, and a first filter screen with a larger through-hole size and a second filter screen with a smaller through-hole size which are arranged up and down are fixedly installed inside the machine shell;

[0008] A blowing component is arranged at the top end of the machine shell. The blowing component includes a fan fixedly installed at the top end of the machine shell. One side input end of the fan is fixedly connected with an air inlet pipe, and the other side output end is fixedly connected with a blowing pipe. The bottom end of the blowing pipe penetrates into the interior of the machine shell. By blowing air into the interior of the machine shell through the blowing component, the metal powder input from the feed pipe can quickly move downward through the layers of screening of the first filter screen and the second filter screen, so as to improve the screening and discharging efficiency;

[0009] The inner walls at both ends of the machine shell are respectively fixedly connected with a first baffle and a second baffle at the right bottom of the first filter screen and the second filter screen. A first discharge channel is formed between the first baffle and the right side wall of the machine shell, and a second discharge channel is formed between the second baffle and the first baffle. Three discharge ports are arranged at the bottom end of the machine shell corresponding to the lower parts of the first discharge channel and the second discharge channel and the left side of the second baffle. The three discharge ports are used for discharging large particle powder that does not pass through the first filter screen, medium particle powder that passes through the first filter screen and does not pass through the second filter screen, and small particle powder that passes through the second filter screen from right to left in sequence. A blocking plate is slidably connected to the right side wall of the machine shell. The blocking plate is in a U-shaped structure, and its top horizontal plate is attached to the right side wall of the first filter screen, and the bottom horizontal plate passes through the first baffle and is attached to the right side wall of the second filter screen. The first discharge channel and the second discharge channel can be blocked during classification through the blocking plate to prevent the metal powder from being directly blown into the first discharge channel and the second discharge channel for discharging without being screened by the first filter screen and the second filter screen, thereby increasing the screening accuracy of the device. After screening, only the blocking plate needs to be moved to the right to make the first discharge channel and the second discharge channel unblocked, and then the discharging can be completed.

[0010] Preferably, the bottom end of the blowing pipe is fixedly connected with an air diffuser hood, and the feed pipe is located at the lower side of the air diffuser hood. Through the setting of the air diffuser hood and its relative distribution position with the feed pipe, the blowing range and speed of the airflow blown into the interior of the machine shell by the fan on the metal powder input through the feed pipe can be effectively expanded, so as to improve the screening efficiency.

[0011] Preferably, a limiting component for fixing the plugging plate is provided on the right side of the casing. The limiting component includes a fixing screw fixedly connected to the outer wall of the right side of the casing. A convex block is formed at the top of the plugging plate, and the convex block is sleeved on the outer side of the fixing screw. A nut is threadedly connected to the outer side of the fixing screw, and the nut fixes and limits the plugging plate to the right side wall of the casing, thereby increasing the stability of the plugging plate in plugging the two discharge channels. Moreover, only by loosening the nut and moving the plugging plate along the fixing screw to the rightmost end can the two discharge channels be completely opened, thus increasing the convenience of use of the device.

[0012] Preferably, a collecting component is provided below the casing. The collecting component includes a fixing box provided below the casing. Three sliding grooves are opened at the top of the fixing box, and the three discharge ports slide correspondingly inside the sliding grooves. Two partition plates are fixedly connected inside the fixing box. The two partition plates are an L-shaped plate and a vertical plate respectively, and the top ends of the plates are distributed between two adjacent sliding grooves to divide the internal area of the fixing box into three compartments corresponding to and communicating with the three discharge ports. Aggregate drawers are slidably connected inside the three compartments respectively, so as to separately collect metal powders of different sizes discharged from the three discharge ports.

[0013] Preferably, the first filter screen, the second filter screen and the bottom end of the casing all incline towards the lower right to guide the metal powder attached to the surface to the first discharge channel and the second discharge channel, and finally discharge through the three discharge ports, thereby reducing the discharge residue of the powder. The bottom ends of the three aggregate drawers incline downward from the side close to the corresponding discharge port to guide the sliding of the metal powder, so that the aggregates are evenly distributed at the bottom end of the aggregate drawer to prevent accumulation below the discharge port.

[0014] Preferably, two rotating shafts are rotatably connected between the inner walls at both ends of the casing. The two rotating shafts are respectively located at the sliding part between the top horizontal plate of the plugging plate and the right side wall of the casing and the through-sliding part between the bottom horizontal plate of the plugging plate and the first baffle. A baffle is fixedly connected to the top end of the rotating shaft. When the plugging plate moves to the right to make the discharge channel unobstructed, the rotating shaft and the baffle will automatically turn downward due to self-action, and the baffle can block the sliding parts between the right side wall of the casing and the first baffle and the plugging plate to prevent the metal powder from overflowing from the slot holes at the sliding parts during discharge, resulting in the mixing of the sieved powder.

[0015] Preferably, a support plate is formed on the right side wall of the casing. Symmetrically distributed telescopic tubes and shock springs are fixedly connected between the bottom end of the casing, the bottom end of the support plate and the top end of the fixing box. The shock springs are located inside the telescopic tubes. The casing and the fixing box are elastically connected through the telescopic tubes and the shock springs, so that the casing can generate tremors when the blowing component operates, thereby further improving the screening and discharging efficiency.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this air classifier for alloy powder classification, by setting a blowing component, the metal powder can quickly pass through two layers of filter screens for screening and discharging, so as to improve the screening and discharging efficiency; by arranging two baffle plates inside the casing to form two discharge channels, and using a blocking plate to block the two discharge channels, it can prevent the metal powder that has not been screened by the filter screens from directly passing through the two discharge channels for mixed discharging, thereby increasing the screening accuracy of the device. The specific content is as follows:

[0017] (1) By setting a blowing component to blow air into the casing, the metal powder input from the feed pipe can quickly move downward through the layers of screening of the first filter screen and the second filter screen, so as to improve the screening and discharging efficiency;

[0018] (2) By arranging a first baffle plate and a second baffle plate inside the casing to form a first discharge channel and a second discharge channel, and using a blocking plate to block the first discharge channel and the second discharge channel during classification, it can prevent the metal powder from being directly blown into the two discharge channels for discharging without being screened by the two filter screens, thereby increasing the screening accuracy of the device. After screening is completed, only need to move the blocking plate to the right to make the two discharge channels unblocked, and then the discharging can be completed;

[0019] (3) By setting a limiting component, the blocking plate can be fixed by the threaded connection between the nut and the fixed screw rod, thereby increasing the stability of the blocking plate blocking the two discharge channels. And only need to loosen the nut to make the blocking plate move to the rightmost end along the fixed screw rod, then the two discharge channels can be completely opened, thereby increasing the convenience of use of the device;

[0020] (4) By arranging a collection component below the casing, the three aggregate drawers inside the fixed box can be used to separately collect the metal powders of different sizes discharged from the three discharge ports, thereby increasing the practicability of the device;

[0021] (5) By arranging a number of telescopic pipes and shock springs between the casing and the fixed box to elastically connect the casing and the fixed box, the casing can generate tremors when the blowing component operates, thereby further improving the screening and discharging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 It is a schematic diagram of the internal sectional structure of the casing of the present utility model;

[0024] Figure 3 It is a schematic diagram of the bottom view structure of the casing of the present utility model;

[0025] Figure 4 The internal sectional structure diagram of the fixed box of the present utility model;

[0026] Figure 5 For the present utility model Figure 2 The enlarged structure diagram at position A in it;

[0027] Figure 6 The connection structure diagram of the rotating shaft and the baffle of the present utility model;

[0028] Figure 7 The example diagram when the present utility model discharges materials.

[0029] In the figure: 1, machine shell; 2, feed pipe; 3, first filter screen; 4, second filter screen; 5, fan; 6, intake pipe; 7, blowing pipe; 8, air diffuser hood; 9, first baffle; 10, first discharge channel; 11, second baffle; 12, second discharge channel; 13, discharge port; 14, fixed box; 15, chute; 16, partition board; 17, aggregate drawer; 18, telescopic pipe; 19, shock spring; 20, blocking plate; 21, fixing screw; 22, nut; 23, rotating shaft; 24, baffle. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] Embodiment 1: Please refer to Figures 1 - 7 , the present invention provides the following technical solutions: An air classifier for alloy powder classification, including a machine shell 1, a feed pipe 2 is fixedly connected to the top of one side of the machine shell 1, and a first filter screen 3 with a larger through-hole size and a second filter screen 4 with a smaller through-hole size are fixedly installed inside the machine shell 1 and are distributed up and down;

[0032] A blowing component is provided at the top end of the casing 1. The blowing component includes a blower 5 fixedly installed at the top end of the casing 1. One side input end of the blower 5 is fixedly connected with an air inlet pipe 6, and the other side output end is fixedly connected with a blowing pipe 7. The bottom end of the blowing pipe 7 penetrates into the interior of the casing 1 and is fixedly connected with a wind diffusing cover 8. The feed pipe 2 is located on the lower side of the wind diffusing cover 8. Through the setting of the wind diffusing cover 8 and its relative distribution position with the feed pipe 2, the blowing range and speed of the air flow blown into the interior of the casing 1 by the blower 5 on the metal powder input through the feed pipe 2 can be effectively enlarged, so as to improve the screening efficiency. By blowing air into the interior of the casing 1 through the blowing component, the metal powder input from the feed pipe 2 can quickly move downward through the layers of screening of the first filter screen 3 and the second filter screen 4, so as to improve the screening and discharging efficiency;

[0033] On the right bottom sides of the first filter screen 3 and the second filter screen 4, the inner walls at both ends of the casing 1 are respectively fixedly connected with a first baffle 9 and a second baffle 11. A first discharge channel 10 is formed between the first baffle 9 and the right side wall of the casing 1, and a second discharge channel 12 is formed between the second baffle 11 and the first baffle 9. At the bottom end of the casing 1, corresponding to the lower sides of the first discharge channel 10 and the second discharge channel 12 and the left side of the second baffle 11, three discharge ports 13 are provided. The three discharge ports 13 are used to discharge large particle powders that do not pass through the first filter screen 3, medium particle powders that pass through the first filter screen 3 and do not pass through the second filter screen 4, and small particle powders that pass through the second filter screen 4 from right to left in sequence. Among them, the first filter screen 3, the second filter screen 4 and the bottom end of the casing 1 are all inclined downward to the right, so as to guide the metal powder attached to the surface to the first discharge channel 10 and the second discharge channel 12, and finally discharge through the three discharge ports 13, thereby reducing the discharge residue of the powder;

[0034] A plugging plate 20 is slidably connected to the right side wall of the casing 1. The plugging plate 20 has a U-shaped structure, and the top horizontal plate thereof is in contact with the right side wall of the first filter screen 3, and the bottom horizontal plate passes through the first baffle 9 and is in contact with the right side wall of the second filter screen 4. The first discharge channel 10 and the second discharge channel 12 can be plugged during classification through the plugging plate 20 to prevent metal powder from being directly blown into the first discharge channel 10 and the second discharge channel 12 for discharging without being screened by the first filter screen 3 and the second filter screen 4, thereby increasing the screening accuracy of the device. After screening is completed, only by moving the plugging plate 20 to the right to make the first discharge channel 10 and the second discharge channel 12 unblocked, discharging can be completed. It should be particularly noted that two rotating shafts 23 are rotatably connected between the inner walls at both ends of the casing 1. The two rotating shafts 23 are respectively located at the sliding part between the top horizontal plate of the plugging plate 20 and the right side wall of the casing 1 and the penetrating sliding part between the bottom horizontal plate of the plugging plate 20 and the first baffle 9. A baffle 24 is fixedly connected to the top of the rotating shaft 23. When the plugging plate 20 moves to the right to make the discharge channel unblocked, the rotating shaft 23 and the baffle 24 will automatically turn downward due to self-action, and the baffle 24 can block the sliding parts between the right side wall of the casing 1 and the first baffle 9 and the plugging plate 20 to prevent metal powder from overflowing from the slot holes at the sliding parts during discharging, resulting in the mixture of the screened powder;

[0035] In addition, a limiting component for fixing the plugging plate 20 is arranged on the right side of the casing 1. The limiting component includes a fixing screw 21 fixedly connected to the outer wall of the right side of the casing 1. A convex block is formed at the top of the plugging plate 20, and the convex block is sleeved on the outer side of the fixing screw 21. A nut 22 is threadedly connected to the outer side of the fixing screw 21. The nut 22 fixes and limits the plugging plate 20 to the right side wall of the casing 1, thereby increasing the stability of the plugging plate 20 for plugging the two discharge channels. And only by loosening the nut 22 and moving the plugging plate 20 to the rightmost end along the fixing screw 21, the two discharge channels can be completely opened, thereby increasing the use convenience of the device.

[0036] Embodiment Two:

[0037] On the basis of Embodiment One, a collecting component is arranged below the casing 1. The collecting component includes a fixing box 14 arranged below the casing 1. A support plate is formed on the right side wall of the casing 1. Symmetrically distributed telescopic tubes 18 and shock springs 19 are fixedly connected between the bottom end of the casing 1, the bottom end of the support plate and the top end of the fixing box 14. The shock springs 19 are located inside the telescopic tubes 18. The casing 1 and the fixing box 14 are elastically connected through the telescopic tubes 18 and the shock springs 19, so that the casing 1 can generate tremors when the blowing component operates, thereby further improving the screening and discharging efficiency;

[0038] The top end of the fixed box 14 is provided with three sliding grooves 15, and the three discharge ports 13 correspondingly slide inside the sliding grooves 15. Two partition plates 16 are fixedly connected inside the fixed box 14. The two partition plates 16 are respectively an L-shaped plate and a vertical plate, and the tops of the plates are distributed between two adjacent sliding grooves 15, so as to divide the internal area of the fixed box 14 into three compartments corresponding to and communicating with the three discharge ports 13. Aggregate drawers 17 are respectively slidably connected inside the three compartments, so as to separately collect metal powders of different sizes discharged from the three discharge ports 13. Among them, the bottoms of the three aggregate drawers 17 are inclined downward from the side close to the corresponding discharge ports 13 to guide the sliding of the metal powders, so that the aggregates are evenly distributed at the bottoms of the aggregate drawers 17, preventing accumulation under the discharge ports 13.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An air classifier for alloy powder classification, comprising a machine housing (1). One side top of the machine housing (1) is fixedly connected with a feed pipe (2). Inside the machine housing (1), a first filter screen (3) with a larger through - slot size and a second filter screen (4) with a smaller through - hole size are fixedly installed in an up - and - down distribution. Features: A blowing assembly is arranged at the top end of the machine housing (1). The blowing assembly includes a fan (5) fixedly installed at the top end of the machine housing (1). One side input end of the fan (5) is fixedly connected with an air inlet pipe (6), and the other side output end is fixedly connected with a blowing pipe (7). The bottom end of the blowing pipe (7) penetrates into the inside of the machine housing (1). On the inner walls at both ends of the machine housing (1), a first baffle (9) and a second baffle (11) are respectively fixedly connected at the right - hand bottom sides of the first filter screen (3) and the second filter screen (4). A first discharge channel (10) is formed between the first baffle (9) and the right - hand wall of the machine housing (1). A second discharge channel (12) is formed between the second baffle (11) and the first baffle (9). At the bottom end of the machine housing (1), three discharge ports (13) are arranged below the first discharge channel (10), the second discharge channel (12) and on the left side of the second baffle (11). A plugging plate (20) is slidably connected to the right - hand wall of the machine housing (1). The plugging plate (20) has a U - shaped structure, and its top horizontal plate is in contact with the right - hand wall of the first filter screen (3), and its bottom horizontal plate passes through the first baffle (9) and is in contact with the right - hand wall of the second filter screen (4).

2. The air flow classifier for alloy powder classification according to claim 1, characterized in that: The bottom end of the blowing pipe (7) is fixedly connected with an air - expanding hood (8). The feed pipe (2) is located on the lower - side of the air - expanding hood (8).

3. The air flow classifier for alloy powder classification according to claim 1, characterized in that: A limiting assembly for fixing the plugging plate (20) is arranged on the right side of the machine housing (1). The limiting assembly includes a fixing screw (21) fixedly connected to the outer wall of the right side of the machine housing (1). A convex block is formed at the top end of the plugging plate (20), and the convex block is sleeved on the outer side of the fixing screw (21). A nut (22) is threadedly connected to the outer side of the fixing screw (21), and the nut (22) fixes and limits the plugging plate (20) to the right - hand wall of the machine housing (1).

4. The air flow classifier for alloy powder classification according to claim 1, characterized in that: A collecting assembly is arranged below the machine housing (1). The collecting assembly includes a fixing box (14) arranged below the machine housing (1). Three sliding grooves (15) are opened at the top end of the fixing box (14). The three discharge ports (13) correspondingly slide inside the sliding grooves (15). Two partition plates (16) are fixedly connected inside the fixing box (14). The two partition plates (16) are respectively an L - shaped plate and a vertical plate, and the top ends of the plates are distributed between two adjacent sliding grooves (15) to divide the inner area of the fixing box (14) into three compartments corresponding to and communicating with the three discharge ports (13). Aggregate drawers (17) are respectively slidably connected inside the three compartments.

5. The air flow classifier for alloy powder classification according to claim 4, characterized in that: The first filter screen (3), the second filter screen (4) and the bottom end of the machine housing (1) all incline towards the lower - right. The bottom ends of the three aggregate drawers (17) incline downward from the side close to the corresponding discharge ports (13).

6. The air flow classifier for alloy powder classification according to claim 1, characterized in that: Two rotating shafts (23) are rotatably connected between the inner walls at both ends of the casing (1). The two rotating shafts (23) are respectively located at the sliding position between the top horizontal plate of the blocking plate (20) and the right side wall of the casing (1) and the through sliding position between the bottom horizontal plate of the blocking plate (20) and the first guardrail (9). The top end of the rotating shaft (23) is fixedly connected to a baffle (24).

7. The air flow classifier for alloy powder classification according to claim 4, characterized in that: A support plate is formed on the right side wall of the casing (1), and symmetrically distributed telescopic tubes (18) and oscillation springs (19) are fixedly connected between the bottom end of the casing (1), the bottom end of the support plate and the top end of the fixed box (14), and the oscillation spring (19) is located on the inner side of the telescopic tube (18).

Images