Heating assembly of holding furnace

Abstract

The utility model relates to the technical field of molten aluminum holding furnaces, in particular to a heating assembly of a holding furnace, which comprises at least one sheath arranged in an accommodating cavity in a furnace body, at least one heating element arranged in the accommodating cavity in the furnace body and at least one heating element arranged in the accommodating cavity in the furnace body, the end head is arranged at one end of the heating rod, the end head is matched with a limiting groove formed in the surface of the furnace body, and the limiting groove is communicated with the opening of the sheath. According to the utility model, the first limiting part is arranged at the end of the heating rod, and the second limiting part matched with the first limiting part is arranged on the surface of the limiting groove of the furnace body, so that when the heating rod is inserted into the sheath from the limiting groove, the first limiting part can interact with the second limiting part; therefore, the end head can move from the first position to the second position relative to the limiting groove according to the preset track so as to form axial locking of the heating rod, and the installation efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of liquid aluminum holding furnace, especially to a heating assembly of holding furnace. BACKGROUND

[0002] In the prior art, the heating assembly of the holding furnace usually adopts the form of setting a ceramic protective sleeve outside the silicon-carbon heating rod, and is placed in the holding cavity of the immersion type liquid aluminum holding furnace in a vertical manner or at a certain angle with the horizontal plane to realize heating and holding of the liquid aluminum. Flanges are arranged at both ends of the heating rod. During installation, the heating rod is fixed on the mounting plate by using bolts. This fixing method has the advantages of firmness and simple structure. However, the flanges increase the length of the heating rod, making the structure of the heating rod bulky and occupying too much space inside the furnace body. In addition, during disassembly, the bolts need to be disassembled one by one, so the disassembly efficiency is low. SUMMARY

[0003] Therefore, the utility model provides a heating assembly of holding furnace to solve the technical problem that the flange bolt connection of the heating rod of the existing liquid aluminum holding furnace leads to a long heating assembly and inconvenient assembly and disassembly.

[0004] To achieve the above purpose, the utility model provides a heating assembly of holding furnace, which comprises:

[0005] At least one protective sleeve is arranged in the internal cavity of the furnace body. The protective sleeve is hollow inside and has an opening at one end, so that the heating rod can be placed in the protective sleeve through the opening.

[0006] An end head is arranged at one end of the heating rod. The end head is matched with a limiting groove arranged on the surface of the furnace body. The limiting groove is in communication with the opening of the protective sleeve.

[0007] A first limiting part is arranged on the outer side surface of the end head.

[0008] A second limiting part is arranged on the inner side surface of the limiting groove. The first limiting part and the second limiting part are matched with each other, so that the end head can move from the first position to the second position along a preset track relative to the limiting groove, thereby locking the heating rod.

[0009] As a preferred technical scheme of the utility model, the first limiting part is a protrusion arranged on the outer side surface of the end head, and the second limiting part is a clamping groove arranged on the inner side surface of the limiting groove.

[0010] As a preferred technical scheme of the utility model, the clamping groove is composed of a vertical segment and an arc segment connected end to end.

[0011] As a preferred technical scheme of the utility model, one end of the end head is provided with a frame for assisting the rotation of the end head.

[0012] As the preferred technical scheme of the utility model, one end of the end head is provided with a wiring terminal, and the outer diameter of the end head is larger than the inner diameter of the sheath.

[0013] As the preferred technical scheme of the utility model, the heating assembly further comprises: a limiting cover provided with a through slot, an outer side surface of the limiting cover is provided with an external thread, the external thread is matched with an internal thread groove provided on an inner side surface of the limiting slot, and a screwing direction of the limiting cover is consistent with a screwing direction of the end head.

[0014] As the preferred technical scheme of the utility model, an outer side of the limiting cover is provided with a knob for assisting rotation of the limiting cover.

[0015] As the preferred technical scheme of the utility model, an outer side of the furnace body is provided with a mounting port communicated with the limiting slot.

[0016] As the preferred technical scheme of the utility model, two isolating sleeves are oppositely arranged in the sheath, and the isolating sleeves are provided with through ports matched with the heating rod.

[0017] As the preferred technical scheme of the utility model, three sheaths are arranged horizontally in the furnace body.

[0018] The utility model discloses the beneficial effect: the utility model discloses the end head of heating rod is provided with first limiting portion, and the limiting slot surface of furnace body is provided with second limiting portion matched with first limiting portion simultaneously, when heating rod is inserted into sheath from limiting slot, first limiting portion can interact with second limiting portion, and the end head can be moved from first position to second position according to preset trajectory relative to limiting slot, so that the axial locking of heating rod is formed, so that heating rod is fixed in sheath, and the length of heating rod is smaller, and when installing, does not need to help extra installation tool, and installation efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the utility model, and other drawings can be obtained according to these drawings without paying creative labor for the ordinary skilled in the art.

[0020] Figure 1 It is the local section solid structure schematic diagram of the furnace body of the utility model;

[0021] Figure 2 It is the local section solid structure schematic diagram of the furnace body, sheath, heating rod and limiting cover of the utility model;

[0022] Figure 3 It is the Figure 2An enlarged structural schematic view at A in the middle;

[0023] Figure 4 A three-dimensional structural schematic view of the heating rod of the utility model.

[0024] In the figure, 1 is a furnace body, 2 is a cavity, 3 is a sheath, 4 is an isolation sleeve, 5 is a heating rod, 6 is an end head, 7 is a limiting groove, 8 is a protrusion, 9 is a clamping groove, 10 is a frame, 11 is a wiring terminal, 12 is a limiting cover, 13 is a through groove, 14 is an external thread, 15 is an internal thread groove, 16 is a knob, and 17 is a mounting port. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model is further described in detail below in combination with specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meanings understood by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] As shown in Figure 2 and Figure 3 A heating assembly of a heat preservation furnace, comprising: at least one sheath 3 arranged in a cavity 2 inside a furnace body 1, the sheath 3 being hollow inside and having an opening at one end, so that a heating rod 5 can be placed in the sheath 3 through the opening; an end head 6 arranged at one end of the heating rod 5, the end head 6 being adapted to a limiting groove 7 arranged on the surface of the furnace body 1, the limiting groove 7 being in communication with the opening of the sheath 3; a first limiting part arranged on the outer side surface of the end head 6; a second limiting part arranged on the inner side surface of the limiting groove 7, the first limiting part and the second limiting part cooperating with each other to enable the end head 6 to move from a first position to a second position according to a preset track relative to the limiting groove 7, so as to form locking of the heating rod 5;

[0028] The technical scheme can effectively improve the installation and dismounting efficiency of the heating rod 5. When in use, one end of the heating rod 5 is inserted into the sheath 3 through the opening at one end of the sheath 3, the first limiting part on the surface of the end head 6 is aligned with the second limiting part on the inner side of the limiting groove 7, then the end head 6 is moved from the first position to the second position relative to the limiting groove 7 along the preset track, the locking of the end head 6 is completed, and the heating rod 5 connected with the end head 6 is fixed in the sheath 3. Since no bolt and flange are used, no tools such as wrenches are needed, the efficiency is higher, and the first limiting part is arranged on one end of the heating rod 5 and is part of the heating rod 5, so that the total length of the heating rod 5 is not increased, the length of the heating rod 5 is smaller, the heating rod 5 does not occupy too much space in the furnace body 1, and the cavity 2 of the furnace body 1 can be larger to store more aluminum liquid.

[0029] As shown in Figure 3 and Figure 4 in the embodiment, the first limiting part is a protrusion 8 arranged on the outer side of the end head 6, and the second limiting part is a clamping groove 9 arranged on the inner side of the limiting groove 7; preferably, the clamping groove 9 is composed of a vertical segment and an arc segment connected at the tail.

[0030] The technical scheme can quickly fix the end head 6 in the limiting groove 7. When in use, the protrusion 8 on the surface of the end head 6 is inserted into the vertical segment of the clamping groove 9, the protrusion 8 is inserted into the deepest part of the vertical segment, and the end head 6 is rotated along the axial direction of the end head 6, so that the protrusion 8 on the surface of the end head 6 is rotated into the arc segment of the clamping groove 9, the protrusion 8 is rotated into the deepest part of the arc segment, and the end head 6 is fixed in the limiting groove 7.

[0031] As shown in Figure 3 and Figure 4 in the embodiment, one end of the end head 6 is provided with a rib frame 10 for assisting the rotation of the end head 6.

[0032] The technical scheme can facilitate the rotation of the end head 6. When in use, after the end head 6 is inserted into the limiting groove 7, the side of the end head 6 is blocked, and the end head 6 can be continuously rotated by grabbing the rib frame 10.

[0033] As shown in Figure 4 in the embodiment, one end of the end head 6 is provided with a wiring end 11, and the outer diameter of the end head 6 is greater than the inner diameter of the sheath 3.

[0034] The technical scheme can prevent the end head 6 from being inserted into the sheath 3.

[0035] As shown in Figure 3 and Figure 4As shown in the embodiment, the heating assembly further comprises a limiting cover 12 with a through slot 13, an outer side of the limiting cover 12 is provided with an outer thread 14, the outer thread 14 is matched with an inner thread groove 15 provided on an inner side of the limiting groove 7, a screwing direction of the limiting cover 12 is consistent with a screwing direction of the end head 6;

[0036] The above technical scheme can further improve the fixing effect of the end head 6, when the end head 6 is completely fixed in the limiting groove 7, the limiting cover 12 is screwed into the inner thread groove 15 on the inner side of the limiting groove 7 until the limiting cover 12 generates pressure on the rib frame 10 at one end of the end head 6, which can prevent the end head 6 from rotating, since the screwing direction of the limiting cover 12 is consistent with the screwing direction of the end head 6, the end head 6 will not rotate when the limiting cover 12 is rotated.

[0037] As shown in the embodiment, an outer side of the limiting cover 12 is provided with a knob 16 for assisting rotation of the limiting cover 12; Figure 3

[0038] The above technical scheme can conveniently rotate the limiting cover 12 by operating the knob 16.

[0039] As shown in the embodiment, an outer side of the limiting cover 12 is provided with a knob 16 for assisting rotation of the limiting cover 12; Figure 1

[0040] The above technical scheme can conveniently install the heating rod 5 from the installation port 17 of the furnace body 1.

[0041] As shown in the embodiment, two isolation sleeves 4 are relatively provided in the inner part of the sheath 3, the isolation sleeve 4 is provided with a through port matched with the heating rod 5; three sheaths 3 are arranged horizontally in the furnace body 1; Figure 2

[0042] The above technical scheme can avoid the heating rod 5 directly contacting the sheath 3, prevent the silicon-carbon heating rod 5 from contacting and melting the inner part of the ceramic fiber sheath 3, and improve the service life of the heating rod 5 and the sheath 3.

[0043] ​​​Working principle: in use, one end of the heating rod 5 is inserted into the sheath 3 through the mounting hole 17, the end head 6 of the heating rod 5 is inserted into the limiting groove 7, the protrusion 8 on the surface of the end head 6 is aligned with the vertical section of the clamping groove 9 and is inserted, until the protrusion 8 is inserted to the deepest part of the vertical section, and then the end head 6 is rotated along the axial direction, so that the protrusion 8 on the surface of the end head 6 is rotated into the arc-shaped section of the clamping groove 9, until the protrusion 8 is rotated to the deepest part of the arc-shaped section, the fixing of the end head 6 in the limiting groove 7 is completed, so that the heating rod 5 connected with the end head 6 is fixed in the sheath 3, since the bolts and flanges are not used, the wrench and other tools are not needed, the efficiency is higher, and the first limiting part is arranged at one end of the heating rod 5 and serves as a part of the heating rod 5, so that the total length of the heating rod 5 is not increased, the length of the heating rod 5 is smaller, the heating rod 5 does not occupy too much space in the furnace body 1, and the cavity 2 of the furnace body 1 can be larger, so that more aluminum liquid can be stored.

[0044] In order to further improve the installation stability, when the end head 6 is completely fixed in the limiting groove 7, the limiting cover 12 can be rotated into the internal thread groove 15 on the inner side surface of the limiting groove 7, until the limiting cover 12 generates pressure on the rib frame 10 at one end of the end head 6, so that the end head 6 is prevented from rotating, and the wiring end 11 of the heating rod 5 is pulled out through the through groove 13 on the surface of the limiting cover 12, since the tightening direction of the limiting cover 12 is consistent with the rotating direction of the end head 6, when the limiting cover 12 is rotated, the end head 6 is not rotated.

[0045] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the present application (including the claims) is limited to these examples; under the concept of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0046] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, alternatives and equivalents should be considered as falling within the scope of the present application.

Claims

1. A heating assembly of a holding furnace, comprising: at least one sheath (3) arranged in an internal cavity (2) of a furnace body (1), the sheath (3) being hollow inside and having an opening at one end for a heating rod (5) to be placed in the sheath (3) through the opening; characterized in that the heating assembly further comprises: an end head (6) arranged at one end of the heating rod (5), the end head (6) being adapted to a limiting groove (7) arranged on the surface of the furnace body (1), the limiting groove (7) being in communication with the opening of the sheath (3); a first limiting part arranged on the outer side of the end head (6); a second limiting part arranged on the inner side of the limiting groove (7), the first limiting part and the second limiting part cooperating with each other to enable the end head (6) to move along a preset track from a first position to a second position relative to the limiting groove (7) to form a lock for the heating rod (5).

2. The heating assembly of a holding furnace according to claim 1, wherein The first limiting part is a protrusion (8) arranged on the outer side of the end head (6), and the second limiting part is a clamping groove (9) arranged on the inner side of the limiting groove (7).

3. The heating assembly of a holding furnace according to claim 2, wherein The clamping groove (9) is composed of a vertical segment and an arc segment connected end to end.

4. The heating assembly of a holding furnace according to claim 3, wherein One end of the end head (6) is provided with a rib frame (10) for assisting rotation.

5. The heating assembly of the holding furnace according to claim 3, wherein One end of the end head (6) is provided with a wiring end (11), and the outer diameter of the end head (6) is greater than the inner diameter of the sheath (3).

6. The heating assembly of a holding furnace according to claim 5, wherein The heating assembly further comprises a limiting cover (12) provided with a through groove (13), an outer thread (14) is arranged on the outer side of the limiting cover (12), the outer thread (14) is adapted to an inner thread groove (15) arranged on the inner side of the limiting groove (7), and the tightening direction of the limiting cover (12) is consistent with the screwing-in direction of the end head (6).

7. The heating assembly of a holding furnace according to claim 6, wherein The outer side of the limiting cover (12) is provided with a knob (16) for assisting rotation.

8. The heating assembly of a holding furnace according to claim 1, wherein The outer side of the furnace body (1) is provided with a mounting port (17) in communication with the limiting groove (7).

9. The heating assembly of a holding furnace according to any one of claims 1 to 8, characterized in that Two isolation sleeves (4) are arranged oppositely in the interior of the sheath (3), and the isolation sleeves (4) are provided with through openings adapted to the heating rod (5).

10. The heating assembly of a holding furnace according to claim 9, wherein Three sheaths (3) are arranged horizontally in the furnace body (1).

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