Preheating structure for container corner fitting preparation

Abstract

The preheating structure comprises a normalizing furnace, a furnace lining is arranged on the inner side of the normalizing furnace, a plurality of heating elements are arranged in the furnace lining, and the front end and the rear end of the normalizing furnace are opened and closed through furnace doors; an interlayer is arranged on the outer side of the normalizing furnace and connected with the outside through an air blower, the front half portion of the heating element is located in the normalizing furnace, the rear half portion of the heating element is located in the interlayer, and the side circulation guide structure comprises two side guide frames arranged in the normalizing furnace. The inner side of the side guide frame is movably connected with a first connecting piece and a second connecting piece respectively, the first connecting piece is driven by a recursion assembly arranged on the interlayer, the inner area of the corner piece can be accurately heated and annealed, so that the inner area and the outer area of the corner piece are evenly annealed, and the cracking phenomenon caused by uneven temperature is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a container corner fitting preparation equipment, especially a preheating structure for container corner fitting preparation. BACKGROUND

[0002] The corner fitting of the container is also called box corner and hanging corner, and is mainly used in each corner of the container, and is mainly cast through sand casting, and after casting is completed, the temperature of the container corner fitting is above one thousand degrees, if the cooling mode of sudden temperature drop is adopted, the corner fitting is prone to crack, and the whole is brittle, and the too fast temperature drop is not conducive to the stability of the corner fitting, therefore, the existing casting process usually carries out annealing after sand casting.

[0003] In the traditional technology, the corner fitting is usually placed on the tray, the tray is slid into the annealing furnace, and the annealing furnace adopts the steam circulation annealing mode, but although this annealing mode can achieve the effect of temperature drop, the energy consumption is large, therefore, the existing technology uses the electric heating pipe or the electric heating glass, and the heat radiation mode is adopted to carry out annealing, so that the energy utilization rate is improved, and the heat radiation is more energy-saving than the traditional air heating, but since the corner fitting has an opening, the inner wall of the opening has a certain concave profile and amplitude, and although the heat radiation has a certain penetration, it is difficult to penetrate the corner fitting with a large thickness, so that the temperature inside and outside the corner fitting is not uniform during annealing, and the inside is prone to crack, and the use quality of the container is affected when being actually used. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of preheating structure for container corner fitting preparation, not only can be heated to corner fitting by heat radiation, simultaneously, the inside area of corner fitting can be precisely heated and annealed, so that the annealing of the inside and outside area of corner fitting is uniform, avoids the cracking phenomenon caused by temperature uneven, can effectively solve the above problems.

[0005] The utility model is implemented as follows:

[0006] A kind of preheating structure for container corner fitting preparation, a normalizing furnace for annealing, the inside of the normalizing furnace is provided with furnace lining, a plurality of heating elements are provided in the furnace lining, the front and rear ends of the normalizing furnace are opened and closed by fire furnace door;

[0007] The side circulation guiding structure comprises two side guiding frames arranged in the normalizing furnace, first and second connecting members movably connected to the inner sides of the side guiding frames respectively, and a step-by-step assembly driven by the first connecting member and arranged on the interlayer.

[0008] As a further improvement, the top uniform structure comprises a top guiding frame fixed to the top inner part of the normalizing furnace, and a third connecting member movably arranged in the top guiding frame and driven by a top pushing member.

[0009] As a further improvement, the top guiding frame and the two side guiding frames have the same structure, and the side guiding frame comprises an inner guiding cylinder communicated with the interlayer and connected to an inner guiding plate, and the inner guiding plate is provided with a through hole for the first and second connecting members.

[0010] As a further improvement, the inner guiding cylinder is provided with a guiding ring connected to the inner part of the inner guiding cylinder through a plurality of ribs.

[0011] As a further improvement, the first connecting member comprises a first long cylinder connected to the left step-by-step assembly, the two ends of the first long cylinder are closed, a plurality of left through holes are arranged on the outer circumferential surface of the first long cylinder, and the first long cylinder is slidably arranged in the left inner guiding cylinder.

[0012] As a further improvement, the second connecting member comprises a second long cylinder connected to the right step-by-step assembly, the two ends of the second long cylinder are closed, a plurality of right through holes are arranged on the outer circumferential surface of the second long cylinder, and the second long cylinder is slidably arranged in the right inner guiding cylinder.

[0013] As a further improvement, one side of the first long cylinder facing the corner piece is provided with a matching buckle, and one side of the second long cylinder facing the corner piece is provided with a matching ring, and when the first long cylinder and the second long cylinder are inserted into the inner part of the corner piece, the matching buckle of the first long cylinder is matched with the matching ring of the second long cylinder.

[0014] The beneficial effects of the present application are as follows:

[0015] In the conventional annealing furnace, the air is heated by the heat radiation pipe, the corner piece is annealed, the outer surface of the corner piece is uniformly annealed, but in fact, although the surface of the corner piece is provided with holes, the inner side has a part of the concave arc, and since the thickness of the corner piece is thick, the heat radiation is difficult to enter the inside of the corner piece, therefore, the side circulation guide structure is arranged, when the corner piece is moved to the position corresponding to the side circulation guide structure under the action of the tray, the first connecting piece and the second connecting piece are pushed out by the recursive assembly, the first connecting piece and the second connecting piece are moved along the side guide frame and extended to the inside of the corner piece, the first connecting piece and the second connecting piece extending out of the side guide frame can guide the heated air in the interlayer to the inside of the corner piece, so as to realize the heating of the inside of the corner piece, so that during the process of the corner piece passing through the area of the side circulation guide structure, the inside and the local uniform annealing effect of the separate area can be realized, and the output channel of the hot steam can be closed immediately after the corner piece passes, the energy consumption is reduced, so that the surface and part of the inner layer heat radiation heating and the inner layer contour hot steam heating effect can be realized, and since the air guiding stroke of the first connecting piece and the second connecting piece is long, in order to ensure the stability of the hot steam guiding, the first connecting piece and the second connecting piece are also connected together after extending into the corner piece, so as to form a stable inner heating structure, and ensure the annealing effect of the inside.

[0016] The top of the corner piece actually has holes, and the side circulation guide structure in the middle has a certain distance from the top surface of the corner piece, therefore, the top uniform structure is additionally arranged on the basis of the side circulation guide structure, the structure of the top uniform structure is similar to that of the side circulation guide structure, only the angle is different, so as to form three-way heating of up, left and right, and the inside of the corner piece can form a uniform effect, and the practical effect of the utility model is improved.

[0017] During the extension of the first connecting piece, the second connecting piece and the third connecting piece, since they need to accurately reach the holes of the corner piece, and the time in the inside of the corner piece is limited, the initial positions of the above-mentioned three are located on the side of the corner piece transmission position, and since the length of the connecting piece is long, if there is no support, the influence on the recursive assembly is large, therefore, the inner guide cylinder and the inner guide plate are arranged in the side guide frame of the utility model, first, the connecting piece can be supported, and then the extension and retraction of the connecting piece are guided, so as to provide a basis for the stable movement of the connecting piece.

[0018] While limiting and guiding the connecting parts, the inner guide cylinder also has the effect of storing gas. The hot steam output from the interlayer will be output into the inner guide cylinder. However, the diameter of the inner guide cylinder is relatively large. If the connecting parts are guided by the inner diameter alone, it is difficult to fit tightly against the connecting parts. Therefore, this utility model sets a guide ring on the inner side of the inner guide cylinder and connects it with spaced ribs. This allows the gas to pass through while guiding the connecting parts, avoiding the use of a closed ring body for guidance, which would lead to gas blockage.

[0019] Neither the first nor the second connector will obstruct the normal movement of the corner piece in its initial position. However, after extension, it is necessary to immediately exhaust the gas in the interlayer. Therefore, the two ends of the connector of this utility model are closed, with only the left and right through holes opened on the outer circumferential surface. This ensures that there is no air leakage when it seals the inner guide cylinder and inner guide plate, and that it can quickly exhaust gas after extension. The reaction speed is extremely fast, maximizing the utilization of heat in a limited passage time.

[0020] As mentioned above, the first and second connecting parts are quite long, so they need to be joined together to form a stable structure. Therefore, this utility model sets a matching buckle and a matching ring at the positions of the first and second connecting parts, so that they can cooperate with each other after extending into place to achieve a long structure and build a stable straight rod structure. Even if the pressure of the injected gas is too high, it will not tilt or bend. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a top view of the structure of this utility model.

[0024] Figure 3 This is a utility model Figure 2 Cross-sectional view at point AA.

[0025] Figure 4 This is a utility model Figure 2 Cross-sectional view at point BB.

[0026] Figure 5 This is a utility model Figure 4 A magnified view of region C in the middle.

[0027] Figure 6 is the structural schematic view of the side circulation guide structure of the utility model.

[0028] Figure 7 is the structural schematic view of the first long cylinder of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] In the description of the utility model, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] Referring to Figures 1-7As shown, a preheating structure for preparing a container corner fitting, comprising: a normalizing furnace 10 for annealing, an inner side of the normalizing furnace 10 is provided with a furnace lining 11, a plurality of heating elements 12 are arranged in the furnace lining 11, and front and rear ends of the normalizing furnace 10 are opened and closed through furnace doors; a waste heat recovery furnace 20 arranged at a front end of the normalizing furnace 10, the waste heat recovery furnace 20 is connected to the normalizing furnace 10 through a heat conduction pipe 21 laterally; a transmission structure 30 comprising guide rails 31 arranged inside the normalizing furnace 10 and the waste heat recovery furnace 20, a tray 32 for loading corner fittings is slidingly installed on the guide rails 31; a side circulation guide structure 40, an interlayer 13 is arranged outside the normalizing furnace 10, the interlayer 13 is connected to the outside through a blower 14, a front half of the heating element 12 is located in the normalizing furnace 10, and a rear half of the heating element 12 is located in the interlayer 13, the side circulation guide structure 40 comprises two side guide frames 41 arranged in the normalizing furnace 10, a first connecting piece 42 and a second connecting piece 43 are movably connected to inner sides of the side guide frames 41 respectively, the first connecting piece 42 is driven through a recursive assembly 44 arranged on the interlayer 13, when the corner fitting moves to a hole position outside the transmission structure 30 and coincides with the first connecting piece 42, the recursive assembly 44 pushes the first connecting piece 42 and the second connecting piece 43 out and makes the first connecting piece 42 and the second connecting piece 43 butt joint, so that hot air in the interlayer 13 flows into an inner side of the corner fitting through the first connecting piece 42 and the second connecting piece 43 to heat.

[0032] In the embodiment, the two side guide frames 41 are symmetrically arranged, and the structure and effect are the same.

[0033] In the conventional annealing furnace, the air is heated by the heat radiation pipe, so that the corner piece can be annealed uniformly. However, the inner side of the corner piece is recessed, and the heat radiation is difficult to enter the inside of the corner piece due to the thick thickness of the corner piece. The side circulation guide structure 40 is arranged, and when the corner piece moves to the position corresponding to the side circulation guide structure 40 under the action of the material disc 32, the first connecting piece 42 and the second connecting piece 43 are pushed out by the recursive assembly 44, so that the first connecting piece 42 and the second connecting piece 43 move along the side guide frame 41 and extend to the inside of the corner piece. The first connecting piece 42 and the second connecting piece 43 extending out of the side guide frame 41 can guide the heated air in the interlayer 13 to the inside of the corner piece, so that the inside of the corner piece is heated, so that the inside and the local uniform annealing effect of the corner piece can be realized in the process of passing through the side circulation guide structure 40, and the output channel of the hot steam can be closed immediately after the corner piece passes through, so as to reduce the energy consumption, so as to realize the surface and part of the inner layer heat radiation heating and the inner layer contour hot steam heating effect, and because the air guiding stroke of the first connecting piece 42 and the second connecting piece 43 is long, in order to ensure the stability of the hot steam guiding, the first connecting piece 42 and the second connecting piece 43 are also connected together after extending into the corner piece, so as to form a stable inner heating structure, and the inside annealing effect is ensured.

[0034] The top of the corner piece actually has a hole, and the side circulation guide structure 40 in the middle has a certain distance from the top surface of the corner piece, so that the top uniform structure 50 of the embodiment also includes a top guide frame 51 fixed on the top of the normalizing furnace 10, and a third connecting piece 52 movably arranged in the top guide frame 51, and the third connecting piece 52 is driven by a top pushing piece 53. The top uniform structure 50 is added on the basis of the side circulation guide structure 40, and the structure of the top uniform structure 50 is similar to that of the side circulation guide structure 40, except that the angle is different, so that three-way heating of up, left and right can be formed, and the inside of the corner piece can be uniformly heated, and the practical effect of the utility model is improved.

[0035] In the process of the first adapter 42 and the second adapter 43 and the third adapter 52 extending, since it needs to accurately reach the hole of the corner piece and it exists in the corner piece for a limited time, the initial positions of the above three are on the side of the corner piece transmission position, and since the length of the adapter is long, if it is not supported all the time, it will have a greater impact on the recursive assembly 44, therefore, the top guide frame 51 of the embodiment is the same as the two side guide frames 41, the side guide frame 41 comprises an inner guide cylinder 411 penetrating the furnace lining 11 and communicating with the interlayer 13, the inner guide cylinder 411 is connected to an inner guide plate 412, the inner guide plate 412 is provided with a through hole for the first adapter 42 and the second adapter 43 to pass through, and the side guide frame 41 is provided with the inner guide cylinder 411 and the inner guide plate 412, which can first support the adapter and then guide the extension and retraction of the adapter, thereby providing a basis for the stable movement of the adapter.

[0036] The inner guide cylinder 411 not only limits and guides the adapter, but also has the effect of storing gas, the hot steam output from the interlayer 13 will be output into the inner guide cylinder 411, but the diameter of the inner guide cylinder 411 is large, if it only relies on the inner diameter to guide the adapter, it is difficult to tightly fit the adapter, therefore, the inner guide cylinder 411 of the embodiment is provided with a guide ring 413 in the inside, the guide ring 413 is connected to the inside of the inner guide cylinder 411 through a plurality of ribs 414, by setting the guide ring 413 on the inside of the inner guide cylinder 411 and connecting through the spaced ribs 414, the gas can pass through while the adapter is guided, avoiding using a closed ring to guide and causing gas resistance.

[0037] The first adapter 42 and the second adapter 43 will not hinder the normal movement of the corner piece at the initial position, and the gas of the interlayer 13 needs to be immediately guided out after extension, therefore, the adapters on both sides of the embodiment specifically comprise: the first adapter 42 comprises a first long cylinder 421 connected with the left recursive assembly 44, both ends of the first long cylinder 421 are closed, a plurality of left through holes 422 are formed on the outer circumferential surface of the first long cylinder 421, the first long cylinder 421 is slidingly arranged in the left inner guide cylinder 411, the second adapter 43 comprises a second long cylinder 431 connected with the right recursive assembly 44, both ends of the second long cylinder 431 are closed, a plurality of right through holes 432 are formed on the outer circumferential surface of the second long cylinder 431, the second long cylinder 431 is slidingly arranged in the right inner guide cylinder 411, both ends of the adapter are closed, only the outer circumferential surface is provided with the left through hole 422 and the right through hole 432, so that the gas can not leak when the inner guide cylinder 411 and the inner guide plate 412 are closed, and the gas can be quickly guided after extension, the reaction speed is extremely fast, and the maximum utilization of heat is realized in a limited passing time.

[0038] The third adapter 52 is identical in structure to the first adapter 42 and the second adapter 43, but is installed at a different angle and there is only one of it.

[0039] The first adapter 42 and the second adapter 43 are long, so they need to be connected to form a stable structure. The first long cylinder 421 of the first adapter 42 is provided with a matching buckle 451 on the side facing the corner piece, and the second long cylinder 431 of the second adapter 43 is provided with a matching ring 452 on the side facing the corner piece. When the first long cylinder 421 and the second long cylinder 431 are inserted into the corner piece, the matching buckle 451 of the first long cylinder 421 cooperates with the matching ring 452 of the second long cylinder 431. The matching buckle 451 and the matching ring 452 are arranged on the first adapter 42 and the second adapter 43, so that they can cooperate with each other after being inserted into position, realizing a long structure and constructing a stable straight rod structure. Even if the pressure of the gas injected is too large, the structure will not tilt or bend.

[0040] In order to retain the heat of the normalizing furnace 10 and the waste heat recovery furnace 20, the normalizing furnace 10 and the waste heat recovery furnace 20 are provided with automatically controlled feeding door plates and discharging door plates, which are opened during feeding and discharging and closed at other times, so as to retain as much heat as possible.

[0041] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A preheating structure for manufacturing a corner fitting of a container, characterized by, The utility model relates to an annealing furnace, which comprises: a normalizing furnace (10) for annealing, the inner side of the normalizing furnace (10) is provided with a furnace lining (11), a plurality of heating elements (12) are arranged in the furnace lining (11), and the front end and the rear end of the normalizing furnace (10) are opened and closed through furnace doors; a side circulation guide structure (40), the outer side of the normalizing furnace (10) is provided with a sandwich layer (13), the sandwich layer (13) is connected with the outside through a blower (14), the front half of the heating element (12) is located in the normalizing furnace (10), the rear half of the heating element (12) is located in the sandwich layer (13), the side circulation guide structure (40) comprises two side guide frames (41) arranged in the normalizing furnace (10), the inner side of the side guide frame (41) is movably connected with a first connecting piece (42) and a second connecting piece (43) respectively, the first connecting piece (42) is driven through a recursive assembly (44) arranged on the sandwich layer (13), when the corner piece moves to the hole position on the outer side of the transmission structure (30) and coincides with the first connecting piece (42), the recursive assembly (44) pushes the first connecting piece (42) and the second connecting piece (43) out and makes the first connecting piece (42) and the second connecting piece (43) butt joint, so that the hot air in the sandwich layer (13) flows into the inner side of the corner piece through the first connecting piece (42) and the second connecting piece (43) to heat.

2. The preheating structure for manufacturing a corner fitting of a container according to claim 1, wherein It also comprises a top uniform structure (50), the top uniform structure (50) comprises a top guide frame (51) fixed on the top inside of the normalizing furnace (10), a third connecting piece (52) is movably arranged in the top guide frame (51), and the third connecting piece (52) is driven through a top pushing piece (53).

3. The preheating structure for manufacturing a corner fitting of a container according to claim 2, wherein The top guide frame (51) and the two side guide frames (41) have the same structure, the side guide frame (41) comprises an inner guide cylinder (411) in communication with the sandwich layer (13), the inner guide cylinder (411) is connected to an inner guide plate (412), and the inner guide plate (412) is provided with a through hole for the first connecting piece (42) and the second connecting piece (43) to pass through.

4. The preheating structure for manufacturing a corner fitting of a container according to claim 3, wherein The inner guide cylinder (411) is provided with a guide ring (413) inside, and the guide ring (413) is connected with the inside of the inner guide cylinder (411) through a plurality of ribs (414).

5. The preheating structure for manufacturing a corner fitting of a container according to claim 1, wherein The first connecting piece (42) comprises a first elongated cylinder (421) connected with the recursive assembly (44) on the left side, both ends of the first elongated cylinder (421) are closed, a plurality of left through holes (422) are formed in the outer circumferential surface of the first elongated cylinder (421), and the first elongated cylinder (421) is slidably arranged in the left inner guide cylinder (411).

6. The preheating structure for manufacturing a corner fitting of a container according to claim 5, wherein The second connecting piece (43) comprises a second elongated cylinder (431) connected with the recursive assembly (44) on the right side, both ends of the second elongated cylinder (431) are closed, a plurality of right through holes (432) are formed in the outer circumferential surface of the second elongated cylinder (431), and the second elongated cylinder (431) is slidably arranged in the right inner guide cylinder (411).

7. The preheating structure for manufacturing a corner fitting of a container according to claim 6, wherein The first long cylinder (421) is provided with a matching buckle (451) on the side facing the corner piece, and the second long cylinder (431) is provided with a matching ring (452) on the side facing the corner piece. When the first long cylinder (421) and the second long cylinder (431) extend into the interior of the corner piece, the matching buckle (451) of the first long cylinder (421) matches the matching ring (452) of the second long cylinder (431).

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