Heater and sintering furnace

Abstract

The utility model discloses a heater and a sintering furnace, the heater comprises at least two groups of heating units, each group of heating units is arranged around the circumferential outer side of a material box and forms a ring shape, and the at least two groups of heating units are spaced along the length direction of the material box; each heating unit comprises a plurality of heating single bodies and a plurality of first connecting pieces; the plurality of heating single bodies are wound on the circumferential outer side of the material box and are arranged at intervals, each heating single body comprises a plurality of heating rods and a plurality of second connecting pieces, the length direction of the heating rods is parallel to the length direction of the material box, and in the heating single bodies, one ends of every two adjacent heating rods are connected through at least one second connecting piece; the other ends of two adjacent heating rods are connected through at least another second connecting piece; the heating rods, close to each other, of every two adjacent heating single bodies are connected through at least one first connecting piece. Through the arrangement, the structural stability of the heater can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sintering equipment technical field especially, it is a kind of heater and sintering furnace. BACKGROUND

[0002] Sintering furnace is a kind of protective sintering furnace to heated material, its inside is under the condition of vacuum or protective atmosphere, using the principle of intermediate frequency induction heating makes powder compact obtain required physical, mechanical properties and microstructure by sintering.

[0003] In the related art, the sintering furnace includes a material box and a heater. The heater includes a plurality of heating rods. The length direction of the heating rods is parallel to the length direction of the material box. The plurality of heating rods are arranged along the circumferential outer side of the material box. The heating rods are used to heat the material box after being electrified. The length of the heating rods needs to be adapted to the length of the material box, that is, the length of the heating rods needs to be comparable to the length of the material box, so that the heating rods can heat the material box along the length of the material box when the heating rods generate heat. However, when the length of the material box is large, the heating rods are also correspondingly long, which can cause the structure of the heating rods to have large deflection and be prone to deformation, resulting in poor structural stability of the heater. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a heater and a sintering furnace, which can improve the structural stability of the heater.

[0005] According to the heater of the first aspect of the utility model, the heater includes at least two groups of heating units. Each group of heating units is arranged around the circumferential outer side of the material box and forms a ring. The at least two groups of heating units are arranged along the length direction of the material box.

[0006] Each heating unit includes a plurality of heating monomers and a plurality of first connecting pieces.

[0007] The plurality of heating monomers are arranged around the circumferential outer side of the material box and are arranged at intervals. Each heating monomer includes a plurality of heating rods and a plurality of second connecting pieces. The length direction of the heating rods is parallel to the length direction of the material box. In the heating monomer, one end of the adjacent two heating rods is connected by at least one second connecting piece, and the other end of the adjacent two heating rods is connected by at least another second connecting piece.

[0008] The heating rods of each of the adjacent two heating monomers that are close to each other are connected by at least one first connecting piece.

[0009] According to the heat dissipation structure of the utility model embodiment, at least the following beneficial effects are achieved:

[0010] By arranging the heater into at least two groups of heating units arranged at intervals along the length direction of the material box, the length of the single heating unit arranged along the length direction of the material box is reduced, that is, the length of the heating rod is reduced, avoiding the heating rod from extending to a length comparable to the material box along the length direction of the material box, so that the deflection of the heating rod is large, and in the heating monomer, one end of the two adjacent heating rods is connected together through at least one second connecting piece, and the other end of the two adjacent heating rods is connected together through at least another second connecting piece, so that the relative deviation of the two adjacent heating rods is limited, the structural stability of the heating monomer is improved, the deformation of the heating rod is avoided, and the structural stability of the heater is improved.

[0011] According to some embodiments of the present application, in the heating monomer, each second connecting piece defines two first threaded holes, and the two first threaded holes of at least one second connecting piece are respectively threadedly connected with one end of the two adjacent heating rods, and the two first threaded holes of at least another second connecting piece are respectively threadedly connected with the other end of the two heating rods.

[0012] The heating unit further comprises a plurality of first nuts, and at least two first nuts are threadedly connected to the two ends of the heating rod, and the at least two first nuts are respectively located on the opposite sides of the first threaded hole along the axial direction of the first threaded hole and abut against the second connecting piece.

[0013] According to some embodiments of the present application, each first connecting piece defines two second threaded holes, and the two second threaded holes of the first connecting piece are respectively threadedly connected with the heating rods of the respective one of the two adjacent heating monomers close to each other.

[0014] The heating unit further comprises a plurality of second nuts, and each heating rod is threadedly connected with at least two second nuts, and the at least two second nuts are respectively located on the opposite sides of the second threaded hole along the axial direction of the second threaded hole and abut against the first connecting piece.

[0015] According to some embodiments of the present application, the number of heating rods in the heating monomer is two, and each heating rod comprises two rod bodies, and one end of the two rod bodies is detachably connected.

[0016] According to some embodiments of the present application, the number of heating rods in the heating monomer is two.

[0017] The second threaded holes of the first connecting piece are threadedly connected with the two rod bodies of the corresponding heating rod close to each other at one end, and at least one second nut is threadedly connected with the two rod bodies close to each other at one end, and the second nut abuts against the first connecting piece.

[0018] The heating unit further comprises two third connecting members and third nuts, each of the third connecting members defines a third threaded hole, two rod bodies of one of the two heating rods away from each other in the heating unit are threadedly connected to the third threaded hole of one of the third connecting members, two rod bodies of the other of the two heating rods away from each other in the heating unit are threadedly connected to the third threaded hole of the other of the third connecting members, at least one third nut is threadedly connected to the two rod bodies away from each other respectively, and the at least two third nuts are located on opposite sides of the third threaded hole along an axial direction of the third threaded hole and abut against the third connecting member.

[0019] According to some embodiments of the present application, each of the at least two heating units is a group and is arranged on the circumferential outer side of the material box and forms a ring.

[0020] According to some embodiments of the present application, the heater further comprises a mounting assembly, the mounting assembly is connected to each of the heating units, and the mounting assembly is used for mounting each of the heating units to the heat preservation layer of the sintering furnace.

[0021] According to some embodiments of the present application, each of the two heating units is a group and is arranged on the circumferential outer side of the material box in an up-down interval;

[0022] The mounting assembly comprises a hanging member and a supporting member, the hanging member is connected to the heat preservation layer and the heating unit on the upper side of the material box and hangs the heating unit, and the supporting member is connected to the heat preservation layer and the heating unit on the lower side of the material box and supports the heating unit.

[0023] According to some embodiments of the present application, the heating unit on the upper side of the material box is correspondingly provided with at least one hanging member, the hanging member comprises a connecting column and an insulating sleeve, one end of the connecting column is connected to the first connecting member of the heating unit, the other end of the connecting column passes through the connecting hole of the heat preservation layer, the other end of the connecting column is provided with an end cap, the insulating sleeve is sleeved on the outer side of the connecting column and located in the connecting hole, the upper end of the insulating sleeve is provided with a first insulating protruding ring, the end cap and the heat preservation layer are respectively located on opposite sides of the first insulating protruding ring, the first insulating protruding ring is located between the end cap and the heat preservation layer, the lower end of the insulating sleeve is provided with a second insulating protruding ring, and the second insulating protruding ring is located between the circumferential inner side wall of the heat preservation layer and the first connecting member; and / or,

[0024] The heating unit on the lower side of the material box is correspondingly provided with a plurality of supporting members, the supporting members are insulating bodies, each of the first connecting members of the heating unit is provided with at least one supporting member, and the inner side wall of the heat preservation layer and the first connecting member are respectively located on opposite sides of the supporting member.

[0025] According to the second aspect of the present application, the sintering furnace comprises a furnace body, a heat preservation layer, a material box and a heater as described above, the furnace body defines a containing cavity, the heat preservation layer, the material box and the heater are accommodated in the containing cavity, and the heater is arranged between the heat preservation layer and the material box.

[0026] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described with reference to the drawings and examples, in which:

[0028] Figure 1 A structure diagram of a sintering furnace provided for one of the embodiments of the present application is shown in the figure;

[0029] Figure 2 A structure diagram of a heater of the sintering furnace is shown in the figure; Figure 1

[0030] Figure 3 A structure diagram of a heating unit of the heater is shown in the figure; Figure 2

[0031] Figure 4 A partial structure exploded view of the heating unit is shown in the figure; Figure 3

[0032] Figure 5 A local enlarged view of A part of the figure is shown in the figure. Figure 1 Reference signs:

[0033] A sintering furnace 1000;

[0034] A heater 100;

[0035] A heating unit 10; a heating monomer 11; a heating rod 111; a rod body 1111; a second connecting piece 112; a first threaded hole 1121; a first connecting piece 12; a second threaded hole 121; a first nut 13; a second nut 14; a third connecting piece 15; a third threaded hole 151; a connecting part 152; an electrode column 153; a third nut 16;

[0036] A mounting assembly 20; a hanging piece 21; a connecting column 211; an insulating sleeve 212; a first insulating convex ring 213; a second insulating convex ring 214; a support 22;

[0037] A material box 200;

[0038] A heat preservation layer 300; a connecting hole 310;

[0039] A furnace body 400; a containing cavity 410.

[0040] DETAILED DESCRIPTION

[0041] ​​​​The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and cannot be understood as a limitation of the present application.

[0042] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0044] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0045] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0046] In the related art, a connecting piece is arranged between each two adjacent heating rods to connect each two adjacent heating rods together, but the connecting structure between the heating rods is difficult to meet the structural stability requirement of the heater.

[0047] Therefore, referring to Figures 1 to 3 The embodiment of the present application provides a heater 100 capable of improving structural stability, and the heater 100 is used for heating in a material box 200 of a sintering furnace 1000.

[0048] The heater 100 comprises at least two groups of heating units 10, each group of heating units 10 is arranged on the circumferential outer side of the material box 200 and forms a ring, and the at least two groups of heating units 10 are arranged at intervals along the length direction of the material box 200; each heating unit 10 comprises a plurality of heating monomers 11 and a plurality of first connecting pieces 12; the plurality of heating monomers 11 are arranged at intervals on the circumferential outer side of the material box 200, each heating monomer 11 comprises a plurality of heating rods 111 and a plurality of second connecting pieces 112, the length direction of the heating rod 111 is parallel to the length direction of the material box 200, in the heating monomer 11, one end of the adjacent two heating rods 111 is connected through at least one second connecting piece 112, and the other end of the adjacent two heating rods 111 is connected through at least another second connecting piece 112; the heating rods 111 of each of the adjacent two heating monomers 11 close to each other are connected through at least one first connecting piece 12.

[0049] Wherein, after the heating unit 10 is powered on, the electric energy is converted into heat energy, and the heat is transferred to the material box 200 through heat radiation, so that the material in the material box 200 is sintered.

[0050] In the embodiment of the utility model, first, by dividing the heater 100 into at least two groups of heating units 10 arranged at intervals along the length direction of the material box 200, the length of a single heating unit 10 arranged along the length direction of the material box 200 is reduced, that is, the length of the heating rod 111 is reduced, avoiding the heating rod 111 needing to extend along the length direction of the material box 200 to a length comparable to the material box 200, which causes the deflection of the heating rod 111 to be large, and in the heating monomer 11, one end of the adjacent two heating rods 111 is connected together through at least one second connecting piece 112, and the other end of the adjacent two heating rods 111 is connected together through at least another second connecting piece 112, thus limiting the relative shift of the adjacent two heating rods 111, improving the structural stability of the heating monomer 11, so that the heating rod 111 is not prone to deformation, thereby improving the structural stability of the heater 100; second, the at least two groups of heating units 10 are arranged at intervals along the length direction of the material box 200, so that the heater 100 is divided into a plurality of heating areas distributed along the length direction of the material box 200, one group of heating units 10 corresponds to one group of heating areas, and after each group of heating units 10 is powered on, each group of heating areas can perform relatively uniform heat radiation, avoiding the phenomenon that the temperature difference of the material box 200 is too large in the length direction, and the adjustability of the divided heater 100 is high, and the user can adjust each group of heating units 10 as needed without adjusting the whole heater 100.

[0051] As Figure 1 And Figure 2As shown, in some embodiments, each group of at least two heating units 10 is arranged on the outer side of the circumference of the material box 200 and forms a ring, so that each group of heating units 10 is divided into a plurality of heating areas distributed along the circumference of the material box 200, one heating unit 10 corresponds to one heating area, and each heating area can perform more uniform heat radiation after each heating unit 10 is powered on, avoiding the phenomenon that the temperature difference of the material box 200 is too large in the circumferential direction, and further improving the adjustability of the heater 100. Users can adjust each heating unit 10 as needed.

[0052] It can be understood that when the temperature difference of the heater 100 in the circumferential direction and the length direction of the material box 200 is too large, the heat needs to be kept on the outer side of the material box 200 by the heat preservation layer 300 arranged on the outer side of the heater 100 to allow the heat to slowly spread on the outer side of the material box 200. To achieve this purpose, a heat preservation layer 300 with good heat preservation performance needs to be used, and accordingly, the cost of the heat preservation layer 300 is also high. The heater 100 of the utility model can avoid the phenomenon that the temperature difference of the material box 200 is too large in the circumferential direction and the length direction by dividing the heater 100 into a plurality of heating areas distributed along the circumference and the length direction of the material box 200. After each heating unit 10 is powered on, uniform heating of the material box 200 can be achieved, thereby reducing the heat preservation performance requirement of the heat preservation layer 300, allowing a heat preservation layer 300 with lower cost to be used for heat preservation, and further reducing the production cost of the sintering furnace 1000.

[0053] In some embodiments, each group of at least two heating units 10 is arranged on the outer side of the circumference of the material box 200 and forms a circular ring, that is, each group of heating units 10 is arranged on the outer side of the circumference of the material box 200 to form a circular ring, so that the heater 100 as a whole is in the shape of a cylinder, and the vertical distance from each group of heating units 10 in the circular ring to the central axis of the material box 200 is equal, which is beneficial to the heater 100 to uniformly radiate heat to the material box 200 and can to some extent avoid the phenomenon that the temperature difference of the material box 200 is too large in the circumferential direction.

[0054] In other embodiments, the above-mentioned ring can also be a rectangle, that is, each group of at least two heating units 10 is arranged on the outer side of the circumference of the material box 200 and forms a rectangle, so that the heater 100 as a whole is in the shape of a rectangular solid. Of course, the above-mentioned ring can also be a polygon, for example, a regular hexagon, etc.

[0055] As shown in FIG. 1, the heater 100 is arranged on the outer side of the circumference of the material box 200, and the heater 100 is divided into a plurality of heating areas distributed along the circumference of the material box 200. Each heating area is provided with at least one heating unit 10, and each heating unit 10 is arranged on the outer side of the circumference of the material box 200 and is connected to the power supply 20. Figure 2As shown, in some embodiments, the number of heating units 10 is six, the six heating units 10 are divided into three groups, two heating units 10 form a group and are jointly arranged on the outer side of the circumference of the hopper 200 and form a circular ring, and the three groups of heating units 10 are arranged at intervals along the length direction of the hopper 200, so that the six heating units 10 cover the outer side of the hopper 200 in the length direction and the circumferential direction of the hopper 200.

[0056] Of course, in other embodiments, the number of heating units 10 can also be more than six. For example, the number of heating units 10 is eight, the eight heating units 10 are divided into four groups, two heating units 10 form a group and are jointly arranged on the outer side of the circumference of the hopper 200 and form a circular ring, and the four groups of heating units 10 are arranged at intervals along the length direction of the hopper 200; for another example, the number of heating units 10 is nine, the nine heating units 10 are divided into three groups, three heating units 10 form a group and are jointly arranged on the outer side of the circumference of the hopper 200 and form a circular ring, and the four groups of heating units 10 are arranged at intervals along the length direction of the hopper 200.

[0057] Please refer to Figure 4 and Figure 5 In some embodiments, each second connecting piece 112 defines two first threaded holes 1121, the two first threaded holes 1121 of at least one second connecting piece 112 are respectively threadedly connected with one end of the two adjacent heating rods 111, and the two first threaded holes 1121 of at least another second connecting piece 112 are respectively threadedly connected with the other end of the two heating rods 111, so that the mutual connection of the two adjacent heating rods 111 is realized; the heating unit 10 further comprises a plurality of first nuts 13, at least two first nuts 13 are threadedly connected with the two ends of the heating rod 111, and the at least two first nuts 13 are respectively located on the opposite sides of the first threaded hole 1121 in the axial direction of the first threaded hole 1121 and abut against the second connecting piece 112, that is, the at least two first nuts 13 respectively clamp the corresponding second connecting piece 112 from the opposite sides of the second connecting piece 112, so that the second connecting piece 112 can be fastened on the heating rod 111, preventing the relative rotation of the heating rod 111 and the second connecting piece 112, improving the connection strength between the heating rod 111 and the second connecting piece 112, and ensuring the structural stability of the heating unit 11.

[0058] In the present embodiment, the fixation of the heating rod 111 and the second connecting piece 112 is realized by thread connection, which is relatively reliable, and the thread connection has the characteristic of being detachable, which can facilitate the subsequent disassembly and maintenance of the heating unit 11, and reduce the maintenance cost of the heater 100.

[0059] Among them, the first threaded hole 1121 is arranged through the second connecting piece 112.

[0060] In some embodiments, each heating unit 11 includes two heating rods 111, two second connectors 112 and eight first nuts 13. The two heating rods 111 are arranged side by side and spaced apart, and each heating rod 111 has external threads at both ends; each second connector 112 defines two first threaded holes 1121 arranged spaced apart, one second connector 112 is arranged at one end of the two heating rods 111, and the two first threaded holes 1121 on the one second connector 112 are respectively threadedly connected with the external threads at one end of the two heating rods 111, and the other second connector 112 is arranged at the other end of the two heating rods 111, and the two first threaded holes 1121 on the other second connector 112 are respectively threadedly connected with the external threads at the other end of the two heating rods 111; two first nuts 13 are threadedly connected at the external threads at both ends of each heating rod 111, and the two first nuts 13 are respectively located on the opposite sides of the first threaded hole 1121 along the axial direction of the first threaded hole 1121 and respectively abut against the second connector 112 from the opposite sides of the second connector 112.

[0061] It can be understood that in other embodiments, in the heating unit 11, the number of heating rods 111 can be selected according to actual needs, and at least two are required, and correspondingly, the number of second connectors 112 is at least two, and the number of second nuts 14 is at least eight. For example, the number of heating rods 111 is three, and correspondingly, the number of second connectors 112 is six, and the number of first nuts 13 is twelve. Specifically, three heating rods 111 are arranged side by side and spaced apart, and each heating rod 111 has external threads at both ends, two second connectors 112 are arranged between each adjacent two heating rods 111, and the two first threaded holes 1121 on each second connector 112 are respectively threadedly connected with the external threads of the corresponding two heating rods 111, and two first nuts 13 are threadedly connected at the external threads at both ends of each heating rod 111, and the two first nuts 13 are respectively located on the opposite sides of the first threaded hole 1121 along the axial direction of the first threaded hole 1121 and abut against the second connector 112. Of course, the number of second connectors 112 can also be two, each second connector 112 defines three first threaded holes 1121, the external threads at one end of the three heating rods 111 are respectively threadedly connected with the three first threaded holes 1121 on one second connector 112, and the external threads at the other end of the three heating rods 111 are respectively threadedly connected with the three first threaded holes 1121 on the other second connector 112.

[0062] In some embodiments, each first connecting piece 12 defines two second threaded holes 121, and the two second threaded holes 121 of the first connecting piece 12 are respectively threadedly connected with the heating rods 111 of the respective one of the two adjacent heating monomers 11 close to each other, so that the heating rods 111 of the respective one of the two adjacent heating monomers 11 close to each other are connected with each other; the heating unit 10 further comprises a plurality of second nuts 14, each heating rod 111 is threadedly connected with at least two second nuts 14, and the at least two second nuts 14 are respectively located on the opposite sides of the second threaded hole 121 along the axial direction of the second threaded hole 121 and abut against the first connecting piece 12, that is, the at least two second nuts 14 respectively clamp the corresponding first connecting piece 12 from the opposite sides of the first connecting piece 12, so that the first connecting piece 12 can be fastened on the heating rod 111, preventing the relative rotation of the heating rod 111 and the first connecting piece 12, improving the connection strength between the two adjacent heating monomers 11 and ensuring the structural stability of the heating unit 10.

[0063] In the embodiment, the fixation of the two adjacent heating monomers 11 is realized by thread connection, which is reliable in connection and has the feature of being detachable, so that the subsequent disassembly and maintenance of the heating unit 10 can be facilitated, and the maintenance cost of the heater 100 is reduced.

[0064] In the embodiment, the second threaded hole 121 is arranged through the first connecting piece 12.

[0065] It can be understood that the longer the length of the heating rod 111 is, the greater the deflection is, and the more likely the deformation is. In order to further reduce the deflection of the heating rod 111, in some embodiments, each heating rod 111 comprises two rod bodies 1111, and the two rod bodies 1111 are detachably connected at one end.

[0066] In the embodiment, on the one hand, the deflection of the heating rod 111 is reduced by arranging the heating rod 111 as two rod bodies 1111, so that the heating rod 111 is less likely to deform, and the structural stability of the heating rod 111 is improved, and on the other hand, the two rod bodies 1111 are detachably connected, so that the rod bodies 1111 can be disassembled and maintained, and the maintenance cost of the heater 100 is reduced.

[0067] Optionally, the two rod bodies 1111 of each heating rod 111 are coaxially arranged.

[0068] In some embodiments, the number of heating rods 111 in the heating unit 10 is two; the first threaded hole 121 of the first connecting member 12 is threadedly connected to the end of the two rod bodies 1111 of the corresponding heating rod 111 close to each other, and the end of the two rod bodies 1111 close to each other is threadedly connected to at least one second nut 14, and the second nut 14 is arranged to abut against the first connecting member 12, so that the connection of the two rod bodies 1111 of the heating rod 111 close to each other in each of the two adjacent heating units 11 is achieved.

[0069] The heating unit 10 further comprises two third connecting members 15 and a third nut 16, each third connecting member 15 defines a third threaded hole 151, and the end of the two rod bodies 1111 of one of the two heating rods 111 away from each other in the heating unit 10 is threadedly connected to the third threaded hole 151 of one of the third connecting members 15, and the end of the two rod bodies 1111 of the other of the two heating rods 111 away from each other is threadedly connected to the third threaded hole 151 of the other of the third connecting members 15, and the end of the two rod bodies 1111 close to each other is threadedly connected to at least one third nut 16, and the at least two third nuts 16 are respectively located on the two sides of the third threaded hole 151 along the axial direction of the third threaded hole 151 and abut against the third connecting member 15, so that the third connecting member 15 can be fastened on the heating rod 111 to prevent the relative rotation between the heating rod 111 and the third connecting member 15.

[0070] In some embodiments, the third threaded hole 151 is arranged through the third connecting member 15.

[0071] Specifically, each rod body 1111 is provided with external threads at both ends. In one of the heating rods 111 connected to the first connecting member 12, the external threads at the end of the two rod bodies 1111 close to each other are threadedly connected to the corresponding second threaded hole 121 and the second nut 14, and the other end of the two rod bodies 1111 away from each other is threadedly connected to the corresponding first threaded hole 1121 and the first nut 13; in one of the heating rods 111 connected to the third connecting member 15, the external threads at the end of the two rod bodies 1111 close to each other are threadedly connected to the corresponding third threaded hole 151 and the third nut 16, and the other end of the two rod bodies 1111 away from each other is threadedly connected to the corresponding first threaded hole 1121 and the first nut 13.

[0072] In some embodiments, the third connecting piece 15 comprises a connecting portion 152 and an electrode column 153, the connecting portion 152 defines the third threaded hole 151, the electrode column 153 is connected with the connecting portion 152, the electrode column 153 is used for electricity connection, one of the electrode columns 153 of the two third connecting pieces 15 is positive, and the other is negative, so that the heating mode of the heating unit 10 is single-phase heating, which is low in cost, and by arranging the electrode columns 153 on the two heating rods 111 of the heating unit 10 away from each other, it is beneficial to the heating unit 10 to heat more evenly after the electrode columns 153 are electrified.

[0073] Please refer to Figure 1 In some embodiments, the heater 100 further comprises a mounting assembly 20, the mounting assembly 20 is connected with each heating unit 10, the mounting assembly 20 is used for mounting each heating unit 10 on the heat preservation layer 300 of the sintering furnace 1000, so that each heating unit 10 can be stably arranged on the circumferential outer side of the material box 200.

[0074] In some embodiments, every two heating units 10 are a group and are arranged on the circumferential outer side of the material box 200 in an up-down interval; the mounting assembly 20 comprises a hanging piece 21 and a supporting piece 22, the hanging piece 21 connects the heat preservation layer 300 and the heating unit 10 on the upper side of the material box 200 and hangs the heating unit 10, and the supporting piece 22 connects the heat preservation layer 300 and the heating unit 10 on the lower side of the material box 200 and supports the heating unit 10. By arranging every two heating units 10 as a group and in an up-down interval, the hanging piece 21 can be hung on the top of the corresponding heating unit 10 from above, and the supporting piece 22 can support the bottom of the corresponding heating unit 10 from below, so that the hanging and supporting of the heating unit 10 can be simplified.

[0075] Please refer to Figure 1 and Figure 5In some embodiments, the heating unit 10 located on the upper side of the material box 200 is correspondingly provided with at least one hanging piece 21, the hanging piece 21 comprising a connecting column 211 and an insulating sleeve 212; one end of the connecting column 211 is connected with the first connecting piece 12 of the heating unit 10, the other end of the connecting column 211 passes through the connecting hole 310 of the heat preservation layer 300, and the other end of the connecting column 211 is provided with an end cap 2111; the insulating sleeve 212 is sleeved on the outer side of the connecting column 211 and located in the connecting hole 310, the insulating sleeve 212 separates the circumferential outer side wall of the connecting column 211 and the inner side wall of the connecting hole 310, so that the circumferential outer side wall of the connecting column 211 and the inner side wall of the connecting hole 310 are kept insulated; the upper end of the insulating sleeve 212 is provided with a first insulating convex ring 213, the first insulating convex ring 213 is located between the end cap 2111 and the heat preservation layer 300, and the first insulating convex ring 213 separates the circumferential outer side wall of the end cap 2111 and the heat preservation layer 300, so that the circumferential outer side wall of the end cap 2111 and the heat preservation layer 300 are kept insulated, wherein the end cap 2111 and the heat preservation layer 300 abut on the opposite sides of the first insulating convex ring 213 respectively, thereby preventing the connecting column 211 from falling off from the connecting hole 310, so as to realize the hanging of the heating unit 10 located on the upper side of the material box 200; the lower end of the insulating sleeve 212 is provided with a second insulating convex ring 214, the second insulating convex ring 214 is located between the circumferential inner side wall of the heat preservation layer 300 and the first connecting piece 12, and the second insulating convex ring 214 separates the circumferential inner side wall of the heat preservation layer 300 and the first connecting piece 12, so that the circumferential inner side wall of the heat preservation layer 300 and the first connecting piece 12 are kept insulated.

[0076] In some embodiments, the heating unit 10 located on the lower side of the material box 200 is correspondingly provided with a plurality of support pieces 22, the support pieces 22 being insulators, and each first connecting piece 12 of the heating unit 10 is provided with at least one support piece 22, the inner side wall of the heat preservation layer 300 and the first connecting piece 12 abutting on the opposite sides of the support piece 22 respectively, the support piece 22 separating the inner side wall of the heat preservation layer 300 and the first connecting piece 12, so that the inner side wall of the heat preservation layer 300 and the first connecting piece 12 are kept insulated, and the support of the heating unit 10 located on the lower side of the material box 200 is realized. Through the provision of the support piece 22 on each first connecting piece 12, multi-point support of the heating unit 10 located on the lower side of the material box 200 is realized, and better support of the heating unit 10 as a whole can be achieved.

[0077] Specifically, one end of the connecting column 211 is provided in the first connecting piece 12, and one end of the connecting column 211 is threadedly connected with a nut, the nut being located on the side of the first connecting piece 12 away from the heat preservation layer 300 and abutting against the first connecting piece 12, thereby preventing the first connecting piece 12 from falling off from one end of the connecting column 211, so as to realize the connection of the connecting column 211 and the first connecting piece 12.

[0078] The utility model embodiment further provides a kind of sintering furnace 1000, sintering furnace 1000 includes furnace body 400, heat preservation layer 300, material box 200 and the heater 100 as described above, furnace body 400 defines and contains cavity 410, heat preservation layer 300, material box 200 and heater 100 are housed in containing cavity, heater 100 is set between heat preservation layer 300 and material box 200, heat preservation layer 300 is used to heat preservation to the space of its inside material box 200 and heater 100, material box 200 is used to place to be heated material, heater 100 is heated to material box 200 by to further realize the sintering of the material in material box 200 to material box 200.

[0079] The utility model embodiment has been described in detail above in connection with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the utility model. Furthermore, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A heater for heating the feed box of a sintering furnace, characterized in that, The heater comprises at least two groups of heating units, each group of the heating units is arranged on the circumferential outer side of the hopper and forms a ring, and the at least two groups of the heating units are spaced along the length direction of the hopper; Each of the heating units comprises a plurality of heating units and a plurality of first connecting members; The plurality of heating units are arranged on the circumferential outer side of the hopper and are spaced, each of the heating units comprises a plurality of heating rods and a plurality of second connecting members, the length direction of the heating rod is parallel to the length direction of the hopper, in the heating unit, one end of two adjacent heating rods is connected by at least one second connecting member, and the other end of the two adjacent heating rods is connected by at least another second connecting member; The heating rods of each of the two adjacent heating units close to each other are connected by at least one first connecting member.

2. The heater of claim 1, wherein In the heating unit, each of the second connecting members defines two first threaded holes, the two first threaded holes of at least one second connecting member are respectively threadedly connected with one end of the two adjacent heating rods, and the two first threaded holes of at least another second connecting member are respectively threadedly connected with the other end of the two heating rods; The heating unit further comprises a plurality of first nuts, at least two first nuts are threadedly connected with both ends of the heating rod, and at least two first nuts are respectively located on the opposite sides of the first threaded hole along the axial direction of the first threaded hole and are arranged towards the second connecting member.

3. The heater of claim 1, wherein, Each of the first connecting members defines two second threaded holes, and the two second threaded holes of the first connecting member are respectively threadedly connected with the heating rods of each of the two adjacent heating units close to each other; The heating unit further comprises a plurality of second nuts, and at least two second nuts are threadedly connected with each of the heating rods, and at least two second nuts are respectively located on the opposite sides of the second threaded hole along the axial direction of the second threaded hole and are arranged towards the first connecting member.

4. The heater of claim 3, wherein, The number of heating rods in the heating unit is two, and each of the heating rods comprises two rod bodies, and one end of the two rod bodies is detachably connected.

5. The heater of claim 4, wherein, The number of heating rods in the heating unit is two; Each of the second threaded holes of the first connecting member is threadedly connected with two rod bodies of the corresponding heating rod close to each other, at least one second nut is threadedly connected with the two rod bodies close to each other, and the second nut is arranged towards the first connecting member; The heating unit further comprises two third connecting members and third nuts, each of the third connecting members defines a third threaded hole, two of the heating rods in the heating unit away from each other, one of the two heating rods has two rod bodies, one end of the two rod bodies close to each other is threadedly connected with a third threaded hole of one of the third connecting members, the other of the two heating rods has two rod bodies, one end of the two rod bodies close to each other is threadedly connected with a third threaded hole of the other third connecting member, the two rod bodies close to each other are respectively threadedly connected with at least one third nut, and at least two third nuts are respectively located on two opposite sides of the third threaded hole along an axial direction of the third threaded hole and abut against the third connecting member.

6. The heater of claim 1, wherein Each of the at least two heating units is a group and is arranged on a circumferential outer side of the material box and forms a ring.

7. The heater of claim 1, wherein The installation assembly is connected with each of the heating units, and the installation assembly is used for installing each of the heating units on the heat preservation layer of the sintering furnace.

8. The heater of claim 7, wherein, Each of the two heating units is a group and is arranged on a circumferential outer side of the material box in an up-down interval. The installation assembly comprises a hanging member and a supporting member, the hanging member is connected with the heat preservation layer and the heating unit located on the upper side of the material box and hangs the heating unit, and the supporting member is connected with the heat preservation layer and the heating unit located on the lower side of the material box and supports the heating unit.

9. The heater of claim 8, wherein, The heating unit located on the upper side of the material box is correspondingly provided with at least one hanging member, the hanging member comprises a connecting column and an insulating sleeve, one end of the connecting column is connected with the first connecting member of the heating unit, the other end of the connecting column penetrates through a connecting hole of the heat preservation layer, the other end of the connecting column is provided with an end cap, the insulating sleeve is arranged on an outer side of the connecting column and located in the connecting hole, an upper end of the insulating sleeve is provided with a first insulating protruding ring, the end cap and the heat preservation layer are respectively located on two opposite sides of the first insulating protruding ring, the first insulating protruding ring is located between the end cap and the heat preservation layer, a lower end of the insulating sleeve is provided with a second insulating protruding ring, and the second insulating protruding ring is located between the circumferential inner side wall of the heat preservation layer and the first connecting member; and / or The heating unit located on the lower side of the material box is correspondingly provided with a plurality of supporting members, the supporting members are insulating bodies, each of the first connecting members of the heating unit is provided with at least one supporting member, and the inner side wall of the heat preservation layer and the first connecting member are respectively located on two opposite sides of the supporting member.

10. A sintering furnace characterized by comprising: The sintering furnace comprises a furnace body, a heat preservation layer, the material box and the heater, the furnace body defines an accommodating cavity, the heat preservation layer, the material box and the heater are accommodated in the accommodating cavity, and the heater is arranged between the heat preservation layer and the material box.

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