A samarium iron nitrogen powder feeding device and feeding method

Abstract

The present invention discloses a samarium iron nitrogen powder feeding device and a feeding method, belonging to the technical field of feeding devices. The samarium iron nitrogen powder feeding device and the feeding method include a device body, the device body includes an outer cylinder and an inner cylinder, an air intake dust suction structure is provided near the top of the device body, a negative pressure dust suction mechanism matching the air intake dust suction structure is installed at the rear end of the device body; an interception and sedimentation mechanism for intercepting fine particles is also installed between the outer cylinder and the inner cylinder; an automatic unloading mechanism is fixedly installed at the bottom of the center of the device body. The present invention designs an air intake dust suction structure and a negative pressure dust suction mechanism, so that the dust raised upwards will be sucked into the dust suction chamber through multiple dust suction holes, and then enter the negative pressure dust suction mechanism, thereby effectively avoiding a large amount of samarium iron nitrogen dust from polluting the on-site working environment, and at the same time, it can also reduce the impact of dust on the health of on-site processing personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of feeding devices, and in particular relates to a samarium iron nitrogen powder feeding device and a feeding method. Background Art

[0002] SmFeN powder is a rare earth magnetic material with specific magnetic properties. It is mainly composed of samarium (Sm), iron (Fe) and nitrogen (N). This material has high magnetic properties and is widely used in magnetic materials, permanent magnets and magnetic sensors. Compared with traditional neodymium iron boron (NdFeB) magnets, SmFeN powder has the following characteristics: High magnetic energy product: SmFeN magnets have a high magnetic energy product (BHmax), making them very useful in many high-performance applications; Excellent temperature stability: Compared with other types of rare earth magnets, SmFeN magnets can maintain their magnetism at higher temperatures; Corrosion resistance: It has good corrosion resistance to moisture and chemicals.

[0003] SmFeN magnets are usually used in motors, sensors, generators and other applications in high temperature environments because they can maintain stable magnetic properties under high temperature conditions. When processing SmFeN powder into magnetic products, it is necessary to mix its raw materials in a certain proportion, and then put the mixed powder into a mold, and form a green body of the desired shape by cold pressing or hot pressing, and finally perform sintering to promote the mutual bonding between the powders to form a dense solid material. In the above process, SmFeN powder needs to be evenly fed using a special feeding device for subsequent die pressing. When the powder loaded in tons of bags is poured into the feeding device, a large amount of dust will be generated. The scattered dust will not only affect the on-site processing environment, but also affect the health of the on-site processing personnel. In addition, the existing feeding device usually only installs a control valve at the bottom discharge port to control the discharge amount. However, in actual use, the discharge port is often easily blocked, which will affect the normal production and processing progress. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a samarium iron nitrogen powder feeding device and a feeding method.

[0005] The technical solution adopted to solve the above technical problems is: a samarium iron nitrogen powder feeding device, comprising a device body, the device body comprising an outer cylinder and an inner cylinder, the top between the outer cylinder and the inner cylinder is fixedly connected with an inner bending part;

[0006] An air intake and dust suction structure is provided near the top of the device body, and a negative pressure dust suction mechanism matching the air intake and dust suction structure is installed at the rear end of the device body;

[0007] An interception and sedimentation mechanism for intercepting fine particles is also installed between the outer cylinder and the inner cylinder, and an exhaust filter mechanism is also installed on one side of the rear end of the device body;

[0008] An automatic material unloading mechanism is fixedly installed at the bottom of the center of the device body.

[0009] Furthermore, a plurality of supporting parts are fixedly connected to the circumferential side of the bottom of the inner cylinder, the bottom ends of the plurality of supporting parts are fixed to the outer cylinder, the bottom between the outer cylinder and the inner cylinder is supported and isolated by the plurality of supporting parts to form a plurality of drop-out ports, the bottom of the outer cylinder is provided with a discharge port, and the bottom of the discharge port is provided with a flange for connection with bolts or screws.

[0010] Furthermore, the inner bending portion bulges inwardly.

[0011] Through the above technical scheme, the top opening of the device body is an inward-inclined structure. On the one hand, when pouring samarium iron nitrogen powder into the device body, it can play a certain supporting role for the ton bag or other device loaded with powder, and at the same time, the powder remaining at the opening can also naturally slide along its inward-inclined surface into the inner cylinder; on the other hand, by setting the top opening of the device as an inward-inclined structure protruding inward, a large amount of dust generated during the pouring of powder will also pass through the inward-inclined surface at the bottom of the inner bending part. At this time, in combination with the air intake dust suction structure and the negative pressure dust suction mechanism, a better dust suction effect can be achieved, and a large amount of dust can be effectively prevented from escaping to the outside.

[0012] Furthermore, the air intake dust suction structure includes a plurality of dust suction holes opened on the top peripheral side of the inner wall of the inner cylinder and on the inner inclined surface of the bottom of the inner bending part. The dust suction holes are inward-inclined inclined hole structures. A sealing oblique baffle is fixedly connected between the outer cylinder and the inner cylinder. The upper space enclosed by the outer cylinder, the inner cylinder and the sealing oblique baffle is a dust suction chamber. The outer side of the outer cylinder is provided with an annular air guide frame which is connected with the dust suction chamber.

[0013] Through the above technical scheme, the air intake dust suction structure can cooperate with the negative pressure dust suction mechanism to achieve the effect of dust adsorption. In actual operation, when a large amount of samarium iron nitrogen powder is poured into the main body of the device, a large amount of samarium iron nitrogen dust that freely escapes upward will be generated. Due to the multiple dust suction holes on the top peripheral side of the inner wall of the inner cylinder and on the inner inclined surface of the bottom of the inner bending part, when the negative pressure dust suction mechanism is working, negative pressure suction will be generated in the dust suction chamber. At this time, the dust raised upward will be sucked into the dust suction chamber through the multiple dust suction holes, and then enter the negative pressure dust suction mechanism. In this process, by negative pressure adsorption of dust, a large amount of samarium iron nitrogen dust can be effectively avoided from polluting the on-site working environment, and the impact of dust on the health of on-site processing personnel can also be reduced. In addition, by designing the dust suction hole as an inward-inclined inclined hole structure, it can effectively prevent the samarium iron nitrogen powder from directly entering the dust suction chamber through the dust suction hole during the pouring of the samarium iron nitrogen powder, thereby effectively avoiding the clogging of the dust suction hole.

[0014] Furthermore, the negative pressure dust suction mechanism includes an air inlet passage fixedly connected to the rear end of the annular air guide frame and communicating therewith, a negative pressure fan is installed at the rear end of the air inlet passage, an air outlet position of the negative pressure fan is fixedly connected to an exhaust passage, an air inlet hole is opened at the center of the rear end of the outer cylinder body, and a plurality of air guide plates are fixedly connected at a position near the air inlet hole between the outer cylinder body and the inner cylinder body.

[0015] Through the above technical solution, after the negative pressure dust suction mechanism is started, the negative pressure fan will generate negative pressure suction when working. At this time, the dust floating upward in the inner cylinder will be sucked into the dust suction chamber through multiple dust suction holes distributed in a ring shape, and then the dust will enter the negative pressure fan through the annular air guide frame and the air inlet channel, and then the dust will be sent to the area between the outer cylinder and the inner cylinder through the exhaust channel. Since the position of the air inlet hole is fixedly connected to multiple air guide plates, the airflow entering through the air inlet hole will be under the guidance of the multiple air guide plates. It will flow in a directed manner along the gap between the outer cylinder and the inner cylinder, so that the dust in the airflow can be quickly intercepted and filtered under the interception action of the interception and sedimentation mechanism.

[0016] Furthermore, the interception and sedimentation mechanism includes a plurality of interception filters installed between the outer cylinder and the inner cylinder, and the bottom between the outer cylinder and the inner cylinder is provided with an outward inclined baffle and an inward inclined baffle in sequence from top to bottom, and there are fine gaps for blanking between the outward inclined baffle and the outer cylinder, and between the inward inclined baffle and the inner cylinder.

[0017] Through the above technical scheme, the interception and sedimentation mechanism is mainly used to intercept dust and fine particles mixed in the airflow. When the airflow flows directionally along the channel between the outer cylinder and the inner cylinder, since multiple interception filters are installed between the outer cylinder and the inner cylinder, when the airflow passes through multiple interception filters, most of the dust and fine particles in the airflow will be intercepted and filtered by multiple interception filters. When the negative pressure dust suction mechanism stops working, under the action of gravity, the intercepted dust and fine particles will fall naturally, and fall to the bottom through the corresponding blanking slits, and finally be mixed into the samarium iron nitrogen powder accumulated at the bottom of the inner cylinder through multiple blanking ports, thereby realizing the recycling of dust and reducing the waste of raw materials.

[0018] Furthermore, the exhaust filter mechanism includes a vertical baffle fixed between the outer cylinder and the inner cylinder, an air outlet is opened on the outer cylinder near the vertical baffle, a mounting frame is fixedly connected to the outer side of the air outlet, and a removable sponge filter block is filled in the middle of the mounting frame.

[0019] Through the above technical solution, the exhaust filter mechanism is mainly used for the terminal interception of dust. The air after interception and filtration will eventually enter the mounting frame through the air outlet. After being filtered and intercepted by the sponge filter block, the filtered air is discharged normally. The small amount of dust intercepted is attached to the sponge filter block. The sponge filter block only needs to be cleaned or replaced regularly afterwards.

[0020] Furthermore, the automatic unloading mechanism includes a triangular bracket fixed to the bottom of the inner wall of the outer cylinder, a servo motor is installed on the top of the triangular bracket, and a protective cover for protecting the servo motor is also installed on the top of the triangular bracket. The bottom end of the servo motor output shaft is fixedly connected to the transmission shaft through a coupling, and the bottom of the outer wall of the transmission shaft is fixedly connected to a spiral auger, and the outer wall of the transmission shaft is also fixedly installed with an L-shaped scraper, and the L-shaped scraper is in contact with the inner wall of the outer cylinder.

[0021] Through the above technical scheme, the automatic unloading mechanism is mainly used for automatic feeding of samarium iron nitrogen powder in the cylinder. When working, the servo motor can be started, and the servo motor drives the transmission shaft, the spiral auger and the L-shaped scraper to rotate synchronously. In this process, the powder accumulated in the inner cylinder will be evenly sent out from the bottom discharge port under the drive of the spiral auger, thereby completing the uniform feeding work; at the same time, with the synchronous rotation of the L-shaped scraper, the samarium iron nitrogen powder can be prevented from adhering and accumulating on the inner wall of the inner cylinder, thereby avoiding the blockage of the discharge port.

[0022] Furthermore, a plurality of fixing ears are fixedly connected to the peripheral side of the outer wall of the outer cylinder.

[0023] Through the above technical solution, by providing a plurality of fixing ears, the main body of the device can complete the lifting work more conveniently, and it is also convenient for installation, disassembly and daily inspection and maintenance.

[0024] The beneficial effects of the present invention are as follows: (1) The present invention designs an air intake dust suction structure and a negative pressure dust suction mechanism, so that the dust lifted upwards will be sucked into the dust suction chamber through multiple dust suction holes, and then enter the negative pressure dust suction mechanism, thereby effectively avoiding a large amount of samarium iron nitrogen dust from polluting the on-site working environment, and at the same time, it can also reduce the impact of dust on the health of on-site processing personnel; (2) The present invention designs an interception and sedimentation mechanism and an exhaust filtration mechanism, so that the intercepted dust and fine particles will naturally fall to the bottom, and finally be mixed into the samarium iron nitrogen powder accumulated at the bottom of the inner cylinder through multiple dropout ports, thereby realizing the recycling of dust and reducing the waste of raw materials; (3) The present invention designs the inner and outer cylinder structures and the inner bending part, so that a large amount of dust generated during the powder pouring process will also pass through the inner inclined surface of the bottom of the inner bending part. At this time, the air intake dust suction structure and the negative pressure dust suction mechanism are combined to achieve a better dust suction effect, which can effectively prevent a large amount of dust from escaping to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first perspective structural diagram of the present invention;

[0026] Figure 2 It is a second viewing angle structural diagram of the present invention;

[0027] Figure 3 It is a third perspective structural diagram of the present invention;

[0028] Figure 4 It is a front view of the present invention;

[0029] Figure 5 yes Figure 4 Middle AA section view;

[0030] Figure 6 yes Figure 4 Middle BB section view;

[0031] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle;

[0032] Figure 8 It is a right side view of the present invention;

[0033] Fig. 9 yes Figure 8 Middle CC section view;

[0034] Fig.10 yes Fig. 9 A partial enlarged view of the middle A;

[0035] Fig.11 yes Fig. 9 A partial enlarged view of point C in the middle;

[0036] Fig.12 It is a top view of the present invention.

[0037] Figure numerals: 1. Device body; 101. Outer cylinder; 102. Inner cylinder; 103. Inner bending part; 104. Support part; 105. Dropping port; 106. Discharging port; 2. Air intake and dust suction structure; 201. Dust suction hole; 202. Sealing inclined baffle; 203. Dust suction chamber; 204. Annular air guide frame; 3. Negative pressure dust suction mechanism; 301. Air intake channel; 302. Negative pressure fan; 303. Exhaust channel; 304. Air intake hole; 305. Air guide plate ; 4. Intercepting and settling mechanism; 401. Intercepting filter; 402. Outwardly inclined baffle; 403. Inwardly inclined baffle; 404. Blanking slit; 5. Exhaust filtering mechanism; 501. Vertical baffle; 502. Air outlet; 503. Mounting frame; 504. Sponge filter block; 6. Automatic unloading mechanism; 601. Triangular bracket; 602. Servo motor; 603. Protective cover; 604. Transmission shaft; 605. Screw auger; 606. L-shaped scraper; 7. Fixing ear. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] like Figure 1-Figure 12 As shown, a samarium iron nitrogen powder feeding device of the present embodiment includes a device body 1, and the device body 1 includes an outer cylinder 101 and an inner cylinder 102, an inner bending portion 103 is fixedly connected to the top between the outer cylinder 101 and the inner cylinder 102, a plurality of supporting portions 104 are fixedly connected to the bottom circumference of the inner cylinder 102, the bottom ends of the plurality of supporting portions 104 are fixed to the outer cylinder 101, and the bottom between the outer cylinder 101 and the inner cylinder 102 is supported and isolated by the plurality of supporting portions 104 to form a plurality of discharge ports 105, a discharge port 106 is provided at the bottom of the outer cylinder 101, and a flange for connection with bolts or screws is provided at the bottom of the discharge port 106.

[0040] Furthermore, in this embodiment, the inner bending portion 103 protrudes inward, so that the top opening of the device body 1 is an inwardly inclined structure. On the one hand, when pouring the samarium iron nitrogen powder into the device body 1, it can provide a certain support for the ton bag or other device loaded with the powder, and at the same time, the powder remaining at the opening can naturally slide along its inwardly inclined surface into the inner cylinder 102; on the other hand, by setting the top opening of the device as an inwardly inclined structure protruding inward, a large amount of dust generated during the pouring of the powder will also pass through the inwardly inclined surface at the bottom of the inner bending portion 103. At this time, in combination with the air intake dust suction structure 2 and the negative pressure dust suction mechanism 3, a better dust suction effect can be achieved, and a large amount of dust can be effectively prevented from escaping to the outside.

[0041] For the air intake and dust suction structure 2, refer to Figure 1-5 The air intake dust suction structure 2 can cooperate with the negative pressure dust suction mechanism 3 to achieve the effect of dust adsorption. The air intake dust suction structure 2 includes a plurality of dust suction holes 201 opened on the top peripheral side of the inner wall of the inner cylinder 102 and on the inner inclined surface of the bottom of the inner bending part 103. The dust suction hole 201 is an inward inclined hole structure. A sealing inclined baffle 202 is fixedly connected between the outer cylinder 101 and the inner cylinder 102. The upper space surrounded by the outer cylinder 101, the inner cylinder 102 and the sealing inclined baffle 202 is a dust suction chamber 203. The outer side of the outer cylinder 101 is provided with a ring-shaped air guide frame 204 that is connected to the dust suction chamber 203. In actual work, when a large amount of samarium iron When nitrogen powder is poured into the device body 1, a large amount of samarium iron nitrogen dust will be generated and freely dispersed upward. Due to the multiple dust suction holes 201 on the top peripheral side of the inner wall of the inner cylinder 102 and on the inner inclined surface of the bottom of the inner bending part 103, when the negative pressure dust suction mechanism 3 is working, negative pressure suction will be generated in the dust suction chamber 203. At this time, the dust raised upward will be sucked into the dust suction chamber 203 through the multiple dust suction holes 201, and then enter the negative pressure dust suction mechanism 3. In this process, the negative pressure adsorption of dust can effectively prevent a large amount of samarium iron nitrogen dust from polluting the on-site working environment, and at the same time, it can also reduce the impact of dust on the health of on-site processing personnel.

[0042] This embodiment further designs the dust suction hole 201 as an inwardly inclined hole structure, thereby effectively preventing the samarium iron nitrogen powder from directly entering the dust suction chamber 203 through the dust suction hole 201 during the pouring process, thereby effectively avoiding the dust suction hole 201 from being blocked.

[0043] Regarding the negative pressure suction mechanism 3, refer to Figure 1-8The rear end of the device body 1 is equipped with a negative pressure dust suction mechanism 3 that matches the air intake dust suction structure 2. The negative pressure dust suction mechanism 3 includes an air intake channel 301 that is fixedly connected to the rear end of the annular air guide frame 204 and communicates therewith. A negative pressure fan 302 is installed at the rear end of the air intake channel 301. The air outlet position of the negative pressure fan 302 is fixedly connected to an exhaust channel 303. An air intake hole 304 is opened at the rear end center of the outer cylinder 101. A plurality of air guide plates 305 are fixedly connected between the outer cylinder 101 and the inner cylinder 102 near the air intake hole 304. After the negative pressure dust suction mechanism 3 is started, the negative pressure fan 302 will generate negative pressure suction when working. At this time, the inner cylinder 102 The dust floating upward from the inside will be sucked into the dust suction chamber 203 through multiple dust suction holes 201 distributed in an annular shape, and then the dust will enter the negative pressure fan 302 through the annular air guide frame 204 and the air inlet channel 301, and then the dust will be sent to the area between the outer cylinder 101 and the inner cylinder 102 through the exhaust channel 303. Since the position of the air inlet hole 304 is fixedly connected to multiple air guide plates 305, the airflow entering through the air inlet hole 304 will flow in a direction along the gap between the outer cylinder 101 and the inner cylinder 102 under the guidance of the multiple air guide plates 305, so that the dust in the airflow can be quickly intercepted and filtered under the interception action of the interception and sedimentation mechanism 4.

[0044] Regarding the interception and settling mechanism 4, refer to Figure 9-10 An interception and sedimentation mechanism 4 for intercepting fine particles is also installed between the outer cylinder 101 and the inner cylinder 102. The interception and sedimentation mechanism 4 includes a plurality of interception filters 401 installed between the outer cylinder 101 and the inner cylinder 102. The bottom between the outer cylinder 101 and the inner cylinder 102 is also provided with an outward oblique baffle 402 and an inward oblique baffle 403 from top to bottom. By setting, a blanking slit 404 is provided between the outward oblique baffle 402 and the outer cylinder 101, and between the inward oblique baffle 403 and the inner cylinder 102. The interception and sedimentation mechanism 4 is mainly used to intercept dust and fine particles mixed in the airflow. When the airflow moves along the outer cylinder 101 and When the channel between the inner cylinder 102 flows in a directional manner, since a plurality of intercepting filters 401 are installed between the outer cylinder 101 and the inner cylinder 102, when the airflow passes through the plurality of intercepting filters 401, most of the dust and fine particles in the airflow will be intercepted and filtered by the plurality of intercepting filters 401. When the negative pressure dust suction mechanism 3 stops working, the intercepted dust and fine particles will naturally fall down under the action of gravity, and fall to the bottom through the corresponding blanking slits 404, and finally be mixed into the samarium iron nitrogen powder accumulated at the bottom of the inner cylinder 102 through a plurality of blanking ports 105, thereby realizing the recycling of dust and reducing the waste of raw materials.

[0045] For exhaust filter mechanism 5, refer to Figure 6-7The exhaust filter mechanism 5 includes a vertical baffle 501 fixed between the outer cylinder 101 and the inner cylinder 102. An air outlet 502 is provided on the outer cylinder 101 near the vertical baffle 501. A mounting frame 503 is fixedly connected to the outer side of the air outlet 502. A detachable sponge filter block 504 is filled in the middle of the mounting frame 503. The exhaust filter mechanism 5 is mainly used for the terminal interception of dust. The air after interception and filtration will eventually enter the mounting frame 503 through the air outlet 502. After being filtered and intercepted by the sponge filter block 504, the filtered air is discharged normally. A small amount of dust intercepted is attached to the sponge filter block 504. The sponge filter block 504 only needs to be cleaned or replaced regularly later.

[0046] Regarding the automatic unloading mechanism 6, the automatic unloading mechanism 6 is mainly used for automatic feeding of samarium iron nitrogen powder in the cylinder, refer to Figure 9-12 The automatic unloading mechanism 6 includes a triangular bracket 601 fixed to the bottom of the inner wall of the outer cylinder 101, a servo motor 602 is installed on the top of the triangular bracket 601, and a protective cover 603 for protecting the servo motor 602 is also installed on the top of the triangular bracket 601. The bottom end of the output shaft of the servo motor 602 is fixedly connected to a transmission shaft 604 through a coupling, and a spiral auger 605 is fixedly connected to the bottom of the outer wall of the transmission shaft 604. An L-shaped scraper 606 is also fixedly installed on the outer wall of the transmission shaft 604. The L-shaped scraper 606 is connected to the outer cylinder 101. The inner walls are in contact with each other. When working, the servo motor 602 can be started, and the servo motor 602 drives the transmission shaft 604, the spiral auger 605 and the L-shaped scraper 606 to rotate synchronously. In this process, the powder accumulated in the inner cylinder 102 will be evenly sent out from the bottom discharge port 106 driven by the spiral auger 605, thereby completing the uniform feeding work; at the same time, with the synchronous rotation of the L-shaped scraper 606, the samarium iron nitrogen powder can be prevented from adhering and accumulating on the inner wall of the inner cylinder 102, thereby avoiding the situation of clogging the discharge port 106.

[0047] In this embodiment, a plurality of fixing ears 7 are fixedly connected to the outer wall of the outer cylinder 101. By providing a plurality of fixing ears 7, the device body 1 can be hoisted more conveniently, and is also convenient for installation, disassembly, and daily inspection and maintenance.

[0048] A feeding method for a samarium iron nitrogen powder feeding device comprises the following steps:

[0049] Step 1: pour the samarium iron nitrogen powder to be processed into the device body 1. At this time, the samarium iron nitrogen powder naturally falls to the bottom of the device body 1 under the action of gravity. At the same time, some dust will be raised during the pouring process;

[0050] Step 2: In the above process, the negative pressure dust collection mechanism 3 is started, and the negative pressure fan 302 generates negative pressure suction when working. At this time, the dust floating upward in the inner cylinder 102 is sucked into the dust collection chamber 203 through the plurality of dust collection holes 201 distributed in an annular shape. At this time, the dust enters the negative pressure fan 302 through the annular air guide frame 204 and the air inlet channel 301, and then is sent to the area between the outer cylinder 101 and the inner cylinder 102 through the exhaust channel 303;

[0051] Step 3: Under the guidance of the multiple air guide plates 305, the blown dust will move in a directional manner along the channel between the outer cylinder 101 and the inner cylinder 102. Since multiple interception filters 401 are installed between the outer cylinder 101 and the inner cylinder 102, a large amount of dust and fine particles will be intercepted and filtered in this process. After the negative pressure fan 302 is stopped, the intercepted fine particles and dust will fall naturally under the action of gravity, and fall to the bottom through the corresponding blanking slits 404, and finally be mixed into the samarium iron nitrogen powder accumulated at the bottom of the inner cylinder 102 through multiple blanking ports 105;

[0052] Step 4: In the above process, the air after interception and filtration will eventually enter the mounting frame 503 through the air outlet 502, and after being filtered and intercepted by the end of the sponge filter block 504, the filtered air is discharged normally, and a small amount of intercepted dust is attached to the sponge filter block 504. The sponge filter block 504 needs to be cleaned or replaced regularly later;

[0053] Step 5: In the subsequent feeding process, the servo motor 602 is started, and the servo motor 602 drives the transmission shaft 604, the spiral auger 605 and the L-shaped scraper 606 to rotate synchronously. In this process, the powder accumulated in the inner cylinder 102 will be evenly sent out from the bottom discharge port 106 driven by the spiral auger 605, thereby completing the uniform feeding work. At the same time, with the synchronous rotation of the L-shaped scraper 606, the samarium iron nitrogen powder can be prevented from adhering and accumulating on the inner wall of the inner cylinder 102, thereby avoiding the situation where the discharge port 106 is blocked.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A samarium iron nitrogen powder feeding device, comprising a device body (1), characterized in that: The device body (1) comprises an outer cylinder (101) and an inner cylinder (102), wherein an inner bending portion (103) is fixedly connected at the top between the outer cylinder (101) and the inner cylinder (102); An air intake dust suction structure (2) is provided near the top of the device body (1), the air intake dust suction structure (2) comprising a plurality of dust suction holes (201) provided on the circumferential side of the top of the inner wall of the inner cylinder (102) and on the inner inclined surface of the bottom of the inner bending portion (103), the dust suction holes (201) being inwardly inclined hole structures, a sealing inclined baffle (202) being fixedly connected between the outer cylinder (101) and the inner cylinder (102), an upper space enclosed by the outer cylinder (101), the inner cylinder (102) and the sealing inclined baffle (202) being a dust suction chamber (203), and an annular air guide frame (204) intersecting the dust suction chamber (203) being provided on the outer side of the outer cylinder (101); A negative pressure dust suction mechanism (3) matching the air intake dust suction structure (2) is installed at the rear end of the device body (1); An interception and sedimentation mechanism (4) for intercepting fine particles is also installed between the outer cylinder (101) and the inner cylinder (102), and the interception and sedimentation mechanism (4) comprises a plurality of interception filters (401) installed between the outer cylinder (101) and the inner cylinder (102), and an outwardly inclined baffle (402) and an inwardly inclined baffle (403) are also provided in sequence from top to bottom at the bottom between the outer cylinder (101) and the inner cylinder (102), and a blanking slit (404) is provided between the outwardly inclined baffle (402) and the outer cylinder (101), and between the inwardly inclined baffle (403) and the inner cylinder (102); An exhaust filter mechanism (5) is also installed on one side of the rear end of the device body (1); An automatic material discharge mechanism (6) is fixedly mounted at the bottom of the center of the device body (1).

2. The samarium iron nitrogen powder feeding device according to claim 1, characterized in that: A plurality of support portions (104) are fixedly connected to the circumferential side of the bottom of the inner cylinder (102); the bottom ends of the plurality of support portions (104) are fixed to the outer cylinder (101); the bottom between the outer cylinder (101) and the inner cylinder (102) is supported and isolated by the plurality of support portions (104) to form a plurality of discharge openings (105); a discharge opening (106) is provided at the bottom of the outer cylinder (101); and a flange for connection with bolts or screws is provided at the bottom of the discharge opening (106).

3. The samarium iron nitrogen powder feeding device according to claim 2, characterized in that: The inner bending portion (103) protrudes inwardly.

4. The samarium iron nitrogen powder feeding device according to claim 1, characterized in that: The negative pressure dust suction mechanism (3) comprises an air intake passage (301) fixedly connected to the rear end of the annular air guide frame (204) and communicating therewith; a negative pressure fan (302) is installed at the rear end of the air intake passage (301); an air outlet of the negative pressure fan (302) is fixedly connected to an exhaust passage (303); an air intake hole (304) is provided at the center of the rear end of the outer cylinder (101); and a plurality of air guide plates (305) are fixedly connected at positions near the air intake holes (304) between the outer cylinder (101) and the inner cylinder (102).

5. The samarium iron nitrogen powder feeding device according to claim 1, characterized in that: The exhaust filter mechanism (5) comprises a vertical baffle (501) fixed between an outer cylinder (101) and an inner cylinder (102); an air outlet hole (502) is provided on the outer cylinder (101) at a position close to the vertical baffle (501); a mounting frame (503) is fixedly connected to the outer side of the air outlet hole (502); and a detachable sponge filter block (504) is filled in the middle of the mounting frame (503).

6. The samarium iron nitrogen powder feeding device according to claim 1, characterized in that: The automatic unloading mechanism (6) comprises a triangular bracket (601) fixed to the bottom of the inner wall of the outer cylinder (101); a servo motor (602) is mounted on the top of the triangular bracket (601); a protective cover (603) for protecting the servo motor (602) is also mounted on the top of the triangular bracket (601); the bottom end of the output shaft of the servo motor (602) is fixedly connected to a transmission shaft (604) via a coupling; a spiral auger (605) is fixedly connected to the bottom of the outer wall of the transmission shaft (604); an L-shaped scraper (606) is also fixedly mounted on the outer wall of the transmission shaft (604); the L-shaped scraper (606) is in contact with the inner wall of the outer cylinder (101).

7. The samarium iron nitrogen powder feeding device according to claim 1, characterized in that: A plurality of fixing ears (7) are fixedly connected to the peripheral side of the outer wall of the outer cylinder (101).

8. The feeding method of the samarium iron nitrogen powder feeding device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: pouring the samarium iron nitrogen powder to be processed into the device body (1), wherein the samarium iron nitrogen powder naturally falls to the bottom of the device body (1) under the action of gravity, and at the same time, some dust is raised during the pouring process; Step 2: During the above process, the negative pressure dust suction mechanism (3) is started, and the negative pressure fan (302) generates negative pressure suction when it is working. At this time, the dust floating upward in the inner cylinder (102) is sucked into the dust suction chamber (203) through a plurality of dust suction holes (201) distributed in an annular shape. At this time, the dust enters the negative pressure fan (302) through the annular air guide frame (204) and the air inlet channel (301), and is then sent into the area between the outer cylinder (101) and the inner cylinder (102) through the exhaust channel (303); Step 3: Under the guiding action of the plurality of air guide plates (305), the dust blown in will move in a directional manner along the channel between the outer cylinder (101) and the inner cylinder (102). Since a plurality of interception filters (401) are installed between the outer cylinder (101) and the inner cylinder (102), a large amount of dust and fine particles will be intercepted and filtered during this process. After the negative pressure fan (302) is stopped, the intercepted fine particles and dust will naturally fall under the action of gravity and fall to the bottom through the corresponding blanking slits (404), and finally be mixed into the samarium iron nitrogen powder accumulated at the bottom of the inner cylinder (102) through the plurality of blanking ports (105); Step 4: In the above process, the air that has been intercepted and filtered will eventually enter the mounting frame (503) through the air outlet (502), and after being filtered and intercepted at the end of the sponge filter block (504), the filtered air is discharged normally, and a small amount of dust that has been intercepted is attached to the sponge filter block (504). The sponge filter block (504) needs to be cleaned or replaced regularly later; Step 5: During the subsequent feeding process, the servo motor (602) is started, and the servo motor (602) drives the transmission shaft (604), the spiral auger (605) and the L-shaped scraper (606) to rotate synchronously. During this process, the powder accumulated in the inner cylinder (102) is evenly delivered from the bottom discharge port (106) driven by the spiral auger (605), thereby completing the uniform feeding work. At the same time, with the synchronous rotation of the L-shaped scraper (606), the samarium iron nitrogen powder can be prevented from adhering and accumulating on the inner wall of the inner cylinder (102), thereby avoiding the situation of clogging the discharge port (106).

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