NdFeB vacuum sintering furnace

Abstract

The utility model relates to the technical field of sintering furnaces, in particular to a neodymium iron boron vacuum sintering furnace which comprises a fixing frame, a furnace body, a first connecting pipe, a heat exchanger, a second connecting pipe, a filter and the like. A furnace body and a heat exchanger are connected to the fixing frame, a first connecting pipe is connected to the furnace body, a second connecting pipe is connected to the heat exchanger, the first connecting pipe communicates with the second connecting pipe, a filter is slidably connected into the first connecting pipe, and a cover is connected to the end, away from the first connecting pipe, of the filter. The heat exchanger is provided with the filter, the cover body, the fixing block, the handle and the clamping assembly, hot air with dust particles is filtered through the filtering holes in the filter, the dust particles are blocked in the filter, and the situation that the heat exchange efficiency of the heat exchanger is reduced due to the fact that the dust particles are deposited in a cooling channel of the heat exchanger is avoided; the filter can effectively reduce deposition of dust particles, reduce energy waste and improve the heat exchange efficiency of the heat exchanger.

Description

TECHNICAL FIELD

[0001] The utility model relates to sintering furnace technical field, specifically, relate to a kind of neodymium iron boron vacuum sintering furnace. BACKGROUND

[0002] Nd-Fe-B permanent magnet material is a kind of high-performance permanent magnet based on intermetallic compound Nd2Fe14B.According to the different manufacturing processes, it can be divided into sintered Nd-Fe-B and bonded Nd-Fe-B two types.Among them, sintered Nd-Fe-B is made by powder metallurgy technology, first alloy is melted to form powder, then pressed into a blank in a strong magnetic field, and finally sintered into shape in a vacuum sintering furnace.Due to its outstanding magnetic performance far beyond bonded Nd-Fe-B, sintered Nd-Fe-B is widely used in many high-tech fields, including but not limited to electronics, power machinery, medical devices, toy manufacturing, packaging industry, hardware machinery and aerospace, etc.This material has played an important role in promoting technological innovation and development in various industries with its excellent magnetic properties.

[0003] During the sintering process of Nd-Fe-B, rare earth elements in the blank will be released and condensed into dust on the furnace wall, and defects generated during the sintering process will also form dust particles.As the cooling process proceeds, the dust enters the heat exchanger with the airflow and gradually deposits in its cooling channel, resulting in a significant reduction in heat exchange efficiency, not only affecting the operating efficiency of the equipment, but also possibly leading to additional maintenance costs as the heat exchanger needs to be cleaned regularly to restore its performance. SUMMARY

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a neodymium iron boron vacuum sintering furnace.

[0005] A neodymium iron boron vacuum sintering furnace, comprising a fixing frame, a furnace body, a first connecting pipe, a heat exchanger, a second connecting pipe, a filter, a cover, a fixing block, a clamping assembly and a handle, the furnace body and the heat exchanger are connected to the fixing frame, the first connecting pipe is connected to the furnace body, the second connecting pipe is connected to the heat exchanger, the first connecting pipe communicates with the second connecting pipe, the filter is slidably connected in the first connecting pipe, the cover is connected to the end of the filter away from the first connecting pipe, the handle is connected to the cover, the fixing block is connected to the end of the first connecting pipe away from the furnace body, the clamping assembly is connected in the fixing block, and the cover is rotatably connected to the fixing block.

[0006] In one embodiment, the clamping assembly includes a connecting block, a clamping block and a connecting spring, at least two clamping blocks are slidably connected in the fixing block, and the connecting spring is connected between the clamping block and the fixing block.The outer wall of the cover is connected to at least two connecting blocks.

[0007] In one embodiment, it further includes a limiting ring, and the limiting ring is connected in the first connecting pipe.

[0008] In one of the embodiments, a sealing ring is further included, and the cover is connected with the sealing ring on the side close to the first connecting pipe.

[0009] In one of the embodiments, a wind guide ring is further included, and the filter is connected with the wind guide ring on the end far from the cover.

[0010] In one of the embodiments, the inner diameter of the wind guide ring on the side close to the cover is smaller than that on the other side.

[0011] Beneficial effects are: the utility model discloses filter, cover, fixed block, handle and clamping assembly are provided, the filter hole on filter is carried out to the hot gas with dust particle and filters, and dust particle is blocked in the filter inside, avoids dust particle deposition in the cooling channel of heat exchanger and leads to heat exchanger heat exchange efficiency reduction, and filter can effectively reduce dust particle deposition, reduces energy waste, improves heat exchanger heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0013] Figure 2 It is the first connecting pipe section view schematic diagram of the utility model.

[0014] Figure 3 It is the fixed block section view schematic diagram of the utility model.

[0015] Figure 4 It is the filter section view schematic diagram of the utility model.

[0016] In the figure mark: 1-fixed frame, 2-furnace body, 3-first connecting pipe, 4-heat exchanger, 5-second connecting pipe, 6-filter, 61-cover, 7-fixed block, 8-connection block, 9-clamping block, 10-connection spring, 11-handle, 12-limiting ring, 13-sealing ring, 14-wind guide ring. DETAILED DESCRIPTION

[0017] The embodiments of the utility model are described in detail below with reference to the drawings.

[0018] A neodymium iron boron vacuum sintering furnace, like Figures 1-4As shown, including the fixed frame 1, furnace body 2, first connecting pipe 3, heat exchanger 4, second connecting pipe 5, filter 6, cover 61, fixed block 7, clamping assembly, handle 11, limit ring 12, sealing ring 13 and air guide ring 14, the fixed frame 1 is connected with the furnace body 2 and the heat exchanger 4, the furnace body 2 top fixed type connection has the first connecting pipe 3, the heat exchanger 4 top fixed type connection has the second connecting pipe 5, the first connecting pipe 3 and the second connecting pipe 5 are communicated, the first connecting pipe 3 is slidably connected with the filter 6, the filter 6 outer wall is provided with filter hole, the inner diameter of the filter hole is only allowed to flow, the filter 6 is fixedly connected with the cover 61 away from the first connecting pipe 3, the cover 61 is fixedly connected with the handle 11 away from the first connecting pipe 3, the first connecting pipe 3 is fixedly connected with the fixed block 7 away from the furnace body 2, the fixed block 7 is connected with the clamping assembly, the cover 61 is rotatably connected with the fixed block 7, the first connecting pipe 3 is fixedly connected with the limit ring 12, the limit ring 12 can ensure that the filter 6 reaches the predetermined depth when sliding into the first connecting pipe 3, provides accurate position control, reduces the position adjustment and correction time and difficulty of the filter 6, improves the installation efficiency of the filter 6, the cover 61 is fixedly connected with the sealing ring 13 close to the first connecting pipe 3, the sealing ring 13 can improve the sealing between the cover 61 and the first connecting pipe 3, prevent the sintering furnace gas leakage, maintain the vacuum state of the sintering furnace, ensure the normal operation of the sintering furnace, the filter 6 is fixedly connected with the air guide ring 14 away from the cover 61, the inner diameter of the air guide ring 14 close to the cover 61 is smaller than the other end, the air guide ring 14 can prevent the hot gas from flowing backward, prevent the dust particles in the hot gas from moving away from the filter 6, improve the dust particle filtering efficiency of the filter 6.

[0019] As shown in the figure, Figures 2-4 The clamping assembly comprises a connecting block 8, a clamping block 9 and a connecting spring 10, two clamping blocks 9 are slidably connected in the fixed block 7, the side of the two clamping blocks 9 close to the cover is inclined, the side of the two clamping blocks 9 close to the sliding groove is smaller than the other side, at least two sliding grooves are opened in the fixed block 7, the clamping block 9 is located in the sliding groove, the sliding groove is communicated with the outside, the communication between the sliding groove and the outside is smaller than the inside of the sliding groove, the connecting spring 10 is fixedly connected between the clamping block 9 and the fixed block 7, the connecting spring 10 is set as a spiral spring, and the outer wall of the cover 61 is fixedly connected with two connecting blocks 8.

[0020] At the beginning, the connecting block 8 is located in the sliding groove, the connecting spring 10 is in the compressed state, when the hot gas in the furnace body 2 is discharged into the heat exchanger 4 through the first connecting pipe 3 and the second connecting pipe 5, the hot gas first enters the filter 6, and the hot gas with dust particles is filtered through the filter hole on the filter 6, and the dust particles are blocked in the filter 6, so that the dust particles are prevented from being deposited in the cooling channel of the heat exchanger 4 to reduce the heat exchange efficiency of the heat exchanger 4, the filter 6 can effectively reduce the deposition of dust particles, reduce energy waste, and improve the heat exchange efficiency of the heat exchanger 4, when the dust particles in the filter 6 need to be cleaned, the handle 11 is rotated to cover the body 61, so that the connecting block 8 is located at the communication position of the sliding groove and the outside, the connecting block 8 slides away from the clamping block 9 in the sliding groove, the connecting spring 10 returns to the original state to make the clamping block 9 rotate to approach the connecting position of the sliding groove and the outside, then the filter 6 is slid out of the first connecting pipe 3 through the handle 11, so that the connecting block 8 and the cover body 61 are separated from the fixing block 7, thereby the filter 6 is taken out, and then the filter 6 is cleaned, after cleaning, the handle 11 is held, the filter 6 is slid into the first connecting pipe 3, and then the connecting block 8 is aligned with the communication position of the sliding groove and the outside, so that the connecting block 8 is slid into the sliding groove, the connecting block 8 presses the inclined surface of the clamping block 9, so that the clamping block 9 is reversed along the sliding groove, the connecting spring 10 is compressed, the cover body 61 is rotated again, so that the connecting block 8 slides in the sliding groove, and the connecting block 8 is away from the communication position of the sliding groove and the outside, the connecting spring 10 is compressed again, thereby the installation of the filter 6 is completed, under the fixing effect of the clamping assembly, the connecting block 8 can slide in the sliding groove at will, and the filter 6 is prevented from falling off to cause the operation failure of the sintering furnace.

[0021] The above only describes the embodiments of the present application and is not used to limit the present application. Any equivalent replacement made within the principles of the present application should be included in the protection scope of the present application. The contents not described in detail in the present application are the prior art known by the technical personnel in the field.

Claims

1. A neodymium-iron-boron vacuum sintering furnace, comprising a fixing frame (1), a furnace body (2), a first connecting pipe (3), a heat exchanger (4) and a second connecting pipe (5), the furnace body (2) and the heat exchanger (4) are connected to the fixing frame (1), the first connecting pipe (3) is connected to the furnace body (2), the second connecting pipe (5) is connected to the heat exchanger (4), and the first connecting pipe (3) and the second connecting pipe (5) are in communication, characterized in that: The filter (6), the cover (61), the fixing block (7), the clamping assembly and the handle (11) are further included, the filter (6) is slidably connected in the first connecting pipe (3), the cover (61) is connected at the end of the filter (6) away from the first connecting pipe (3), the handle (11) is connected on the cover (61), the fixing block (7) is connected at the end of the first connecting pipe (3) away from the furnace body (2), the clamping assembly is connected in the fixing block (7), and the cover (61) is rotationally connected with the fixing block (7).

2. The Nd-Fe-B vacuum sintering furnace according to claim 1, characterized in that: The clamping assembly includes the connecting block (8), the clamping block (9) and the connecting spring (10), at least two clamping blocks (9) are slidably connected in the fixing block (7), the connecting spring (10) is connected between the clamping block (9) and the fixing block (7), and at least two connecting blocks (8) are connected on the outer wall of the cover (61).

3. The Nd-Fe-B vacuum sintering furnace according to claim 2, characterized in that: The sintering furnace further includes the limiting ring (12), and the limiting ring (12) is connected in the first connecting pipe (3).

4. The Nd-Fe-B vacuum sintering furnace according to claim 3, characterized in that: The sintering furnace further includes the sealing ring (13), and the sealing ring (13) is connected on the side of the cover (61) close to the first connecting pipe (3).

5. The NdFeB vacuum sintering furnace according to claim 4, characterized in that: The sintering furnace further includes the air guide ring (14), and the air guide ring (14) is connected at the end of the filter (6) away from the cover (61).

6. A Nd-Fe-B vacuum sintering furnace according to claim 5, characterized in that: The inner diameter of the end of the air guide ring (14) close to the cover (61) is smaller than that of the other end.

Images