Efficient and energy-saving preheating device for continuous machining of copper bars

Abstract

The invention discloses a high-efficiency energy-saving preheating device for continuous processing of copper bars, which is characterized in that an annular frame with a plurality of heated cylinders is additionally arranged in a furnace body, a preheating box and a heat insulation box are additionally arranged in the front-back direction of the furnace body, and before second-stage preheating, the copper bars to be treated are subjected to first-stage preheating by the preheating box, and the copper bars to be treated are subjected to second-stage preheating by means of circulation of high-temperature waste gas of the furnace body; during second-stage preheating, an annular frame is driven to rotate circumferentially, copper bars in the preheating box are pushed into a heated barrel one by one through a first electric push cylinder, the multiple copper bars are prevented from being in a stacking environment, the heated barrel changes the heating state of the copper bars in the continuous circumferential rotation process, and the heating uniformity of all the end faces of the copper bars is improved; and after the second-stage preheating is completed, the high-temperature copper bars are pushed into the heat preservation box one by one through the discharging holes by utilizing the second electric push cylinder for heat preservation, and the three links of first-stage preheating, second-stage preheating and heat preservation are circularly and continuously carried out.

Description

Technical Field

[0001] The invention relates to the technical field of heating furnaces, and more specifically to a high-efficiency and energy-saving copper rod continuous processing preheating device. Background Art

[0002] Copper rod is a kind of non-ferrous metal processing rod with good processing performance and high conductivity. Before the secondary processing of the copper rod as a blank, the copper rod needs to be preheated to improve the plasticity of the copper rod, so as to facilitate the secondary processing and forming steps such as stretching and extrusion in the subsequent operation process.

[0003] In the metallurgical industry, a preheating furnace is a device that heats copper rods to the rolling and forging temperature. After searching, the patent number CN112899595B discloses "A preheating device for brass alloy copper rod processing". Although it can realize the functions of automatically opening the box cover, conveniently inspecting the heating plate, and performing dust removal and ventilation; however, the heating plate used for heating is only arranged under the copper rods. When the copper rods placed in the box are fixedly stacked together, the heat transfer gap between the copper rods is small, and it is difficult to achieve the same preheating temperature of each copper rod within the same preheating time. Only after a batch of copper rods is heated, the box cover is opened and the heated copper rods are all taken out from the opening, and then the preheating of the next batch of copper rods can be carried out. On the one hand, it is inconvenient to take out the heated copper rods, and on the other hand, continuous preheating treatment cannot be achieved.

[0004] Therefore, we propose a high-efficiency and energy-saving copper rod continuous processing preheating device to address the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the existing practical problems. Compared with the existing technology, a high-efficiency and energy-saving copper rod continuous processing preheating device is provided. The device is configured by adding an annular frame with multiple heating cylinders in the furnace body, and adding a preheating box and an insulation box in the front and rear directions of the furnace body. Before the second-stage preheating, the copper rods to be processed are preheated in the preheating box in the first stage, and the heat is supplemented to the preheating box by relying on the circulation of the high-temperature exhaust gas in the furnace body. When the second-stage preheating is performed, the annular frame is driven to rotate in a circle, and the copper rods in the preheating box are pushed into the heating cylinder one by one by using an electric push cylinder one, so as to prevent multiple copper rods from being in a stacking environment. The heating cylinder changes the heating state of the copper rod during continuous circular rotation, and improves the heating uniformity of each end face of the copper rod. After the second-stage preheating is completed, the high-temperature copper rods are pushed into the insulation box one by one through the discharge hole by using an electric push cylinder two for insulation, so as to realize the continuous cycle of the three links of the first-stage preheating, the second-stage preheating and the insulation.

[0006] The object of the present invention can be achieved by the following technical scheme: A high-efficiency and energy-saving copper rod continuous processing preheating device, comprising a furnace body with an opening at one end and an end cover at the opening, wherein a preheating box and a heat preservation box are respectively arranged in the front and rear directions of the furnace body;

[0007] A stacking structure is rotatably installed inside the furnace body through a first driving mechanism, and the stacking structure includes an annular frame rotatably installed inside the furnace body, and a plurality of heating cylinders for stacking copper rods are distributed in an annular manner on the annular frame, and an electric heating tube is arranged outside the heating cylinder. The end of the furnace body close to one side of the preheating box is provided with a feed hole and a lower push hole distributed up and down and corresponding to the position of the heating cylinder, and the end cover is provided with a discharge hole corresponding to the position of the lower push hole;

[0008] A supporting bracket for supporting one end of the preheating box is fixedly installed on the rear side of the furnace body, and a second driving mechanism for rotating the preheating box along the axial direction of the feed hole is fixedly installed on the supporting bracket. A preheating chamber is provided inside the preheating box, which is inclined downward toward the supporting bracket and has an inlet at the upper end. Upper pushing holes are provided at the front and rear ends of the preheating box corresponding to the position of the feed hole, and an electric push cylinder 1 corresponding to the position of the upper pushing hole at the rear is installed at the rear end of the supporting bracket, and an electric push cylinder 2 corresponding to the position of the lower pushing hole is installed at the lower end of the supporting bracket.

[0009] Furthermore, an inspection plate is rotatably installed on the upper end of one side of the furnace body, and a graphite sheath is embedded and installed on the inner wall of the furnace body and the inspection plate. The graphite sheath is arranged inside the furnace body, and the inner side of the graphite sheath is also covered with a refractory fiber felt layer, which is beneficial to improving the uniformity of the temperature inside the furnace body and reducing heat loss.

[0010] Furthermore, an annular cavity is provided on the end cover to avoid the discharge hole, a filter sleeve with a filter layer is embedded in the annular cavity, an exhaust pipe is externally connected to the filter sleeve, a pump is provided on the exhaust pipe, the other end of the exhaust pipe is connected to the interior of the preheating box through a hose, a filter sleeve with a filter layer is added to the end of the furnace body, the copper rod generates exhaust gas under high-temperature preheating environment, the high-temperature exhaust gas is filtered by the filter layer and then flows back into the preheating box through the exhaust pipe, so as to perform relatively low-temperature preheating on the copper rod preheated in the preheating box in one stage.

[0011] Furthermore, the first driving mechanism includes a driving sleeve fixedly connected to the lower end walls on the left and right sides of the furnace body, and a gear 2 arranged front and rear and corresponding to the front and rear end positions of the annular frame is rotatably installed inside the driving sleeve through a rotating shaft. The front and rear ends of the annular frame are fixedly sleeved with a gear 1 that is meshed and connected with the gear 2. A driving motor 1 that synchronously drives the two rotating shafts is fixedly installed on the rear side of the furnace body, and a slot for the gear 1 to pass through is provided on the outer end wall of the furnace body. The meshing transmission gear 1 and gear 2 are used to drive the multiple heating cylinders on the annular frame to perform circular rotation, thereby changing the heating position of the copper rod at all times.

[0012] Furthermore, a heating wire is embedded and installed on the bottom end surface of the preheating chamber, and the heating temperature of the heating wire is lower than the heating temperature of the electric heating tube.

[0013] Furthermore, a rotating sleeve is fixedly mounted on the support bracket in the same direction as the axis of the feed hole, and the end of the support bracket is rotatably mounted in the rotating sleeve. One end of the support bracket connected to the rotating sleeve is provided with a rounded portion rotatably connected to the inner wall of the rotating sleeve. The bottom end wall of the preheating chamber forms a heating surface, which cooperates with the high-temperature gas introduced to effectively ensure that the interior of the preheating box is in a first-stage preheating environment.

[0014] Furthermore, the second driving mechanism includes a gear three rotatably mounted on the rear end of the support bracket, the end of the rounded portion of the support bracket is fixedly sleeved with a gear sleeve meshing with the gear three, and a driving motor two is embedded and installed inside the support bracket for rotationally driving the gear three, and the gear sleeve is a non-closed annular gear structure. By utilizing the cooperation of the driving motor two, the gear three and the gear sleeve, the preheating box is driven to repeatedly flip in the up and down directions, which is beneficial for multiple copper rods pre-stored in the preheating box to roll up and down along the bottom wall of the preheating chamber, constantly changing the contact surface between the copper rods and the heating surface, which is beneficial to improving the one-stage preheating effect of the copper rods in the preheating box.

[0015] Furthermore, the insulation box is also provided with an insulation chamber which is inclined downward at one end and has a discharge port at the bottom. A discharge hole corresponding to the position of the discharge hole is provided at the upper end of the insulation chamber, and the discharge hole is connected to the discharge hole through a connecting pipe.

[0016] Furthermore, a receiving platform is provided under the insulated box, and a receiving trough is provided on the receiving platform which is inclined downward and away from the discharge port. After the copper rod in the furnace body reaches the preheating temperature, when the heating cylinder and the electric push cylinder are pushed forward, the copper rod in the heating cylinder corresponding to the position of the lower push hole and the discharge hole is pushed toward the discharge hole until the copper rod is pushed into the insulated box. The copper rod is pre-stored in the insulated box for heat preservation. When the copper rod needs to be taken out for processing, it is only necessary to open the revolving door at the discharge port, and the copper rod falls from the discharge port onto the receiving platform, and the copper rod rolls along the receiving trough arranged outward, which is convenient for the staff to clamp the copper rod for subsequent processing operations.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This scheme improves the structure of the traditional simple preheating furnace. An annular frame with multiple heating tubes is added inside the furnace body. Feed holes and discharge holes for copper rods to enter and exit are respectively opened at the front and rear ends of the furnace body. The copper rods are pushed into the furnace body through the feed holes. During the loading and unloading process, the annular frame is driven to rotate, so that multiple copper rods can be pushed in and out one by one. This is convenient for loading and unloading one by one and prevents multiple copper rods from being piled up. During the preheating process, the electric heating tube forms a uniform high temperature on the surface of the copper rod. The annular frame drives the heating tube to rotate continuously, changing the heating state of the copper rod and improving the heating uniformity of each end face of the copper rod. In addition, preheating boxes and insulation boxes are added at the front and rear of the furnace body to realize the continuous cycle of the three links of first-stage preheating, second-stage preheating and insulation, which is highly efficient and energy-saving.

[0019] (2) In this scheme, the preheating box is arranged to rotate along the axial direction of the feed hole, and a heating wire is also arranged in the preheating chamber. In operation, heat flow between the furnace body and the preheating box is realized through the exhaust pipe. When the upper push hole on the preheating box is connected with the feed hole, the heat in the preheating box is partially transferred to the furnace body, realizing high-temperature exhaust gas circulation treatment and replenishing heat to the preheating box. The second driving mechanism is used to drive the preheating box to repeatedly flip in the up and down directions, which is beneficial for the multiple copper rods pre-stored in the preheating box to roll up and down along the bottom wall of the preheating chamber, constantly changing the contact area between the copper rods and the heating surface, which is beneficial for improving the one-stage preheating effect of the copper rods in the preheating box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the furnace body of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the present invention when the end cover is detached from the furnace body;

[0024] Figure 5 It is a structural schematic diagram of the furnace body of the present invention when it is opened;

[0025] Figure 6 It is a schematic diagram of the internal structure of the furnace body of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the joint between the furnace body and the first driving mechanism of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the stacking structure of the present invention;

[0028] Fig. 9It is a structural schematic diagram of the junction of the electric heating tube and the heating cylinder of the present invention;

[0029] Fig.10 It is a structural schematic diagram of the junction between the preheating box and the second driving mechanism of the present invention;

[0030] Fig.11 is an end cross-sectional view of the preheating box of the present invention;

[0031] Fig.12 It is a cross-sectional view of the end of the heat preservation box of the present invention.

[0032] Description of the numbers in the figure:

[0033] 1. Furnace body; 101. Feed hole; 102. Discharge hole; 103. Push-down hole; 104. Graphite jacket; 2. Preheating box; 201. Feed port; 202. Push-up hole; 3. Insulation box; 301. Discharge port; 302. Discharge hole; 4. Ring frame; 5. Heating cylinder; 6. Electric heating tube; 7. Filter sleeve; 8. Exhaust pipe; 9. Gear 1; 10. Gear 2; 11. Drive motor 1; 12. Support frame; 13. Rotating sleeve; 14. Gear 3; 15. Gear sleeve; 16. Electric push cylinder 1; 17. Electric push cylinder 2. DETAILED DESCRIPTION

[0034] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0035] Example 1: The present invention discloses a highly efficient and energy-saving copper rod continuous processing preheating device, please refer to Figure 1-Figure 5 , comprising a furnace body 1 with an opening at one end and an end cover at the opening, a preheating box 2 and a heat preservation box 3 are respectively arranged in the front and rear directions of the furnace body 1, an inspection opening is opened at the upper end of one side of the furnace body 1, and an inspection plate is rotatably installed at the inspection opening;

[0036] A graphite jacket 104 is embedded and installed on the inner wall of the furnace body 1 and the inspection plate. The graphite jacket 104 is arranged inside the furnace body 1 and the inner side of the graphite jacket 104 is also covered with a refractory fiber felt layer, which is beneficial to improving the uniformity of the temperature inside the furnace body 1 and reducing heat loss.

[0037] See also Figure 6-Figure 9 A stacking structure is rotatably installed inside the furnace body 1 through a first driving mechanism, and the stacking structure includes an annular frame 4 rotatably installed inside the furnace body 1, and a plurality of heating cylinders 5 for stacking copper rods are distributed in an annular manner on the annular frame 4;

[0038] The heating tube 5 is made of high-strength heat-resistant material. The diameter of the heating tube 5 is set to be larger than the diameter of the copper rod. A plurality of conducting holes are provided on the heating tube 5. A plurality of groups of electric heating tubes 6 are arranged in a circular manner on the annular frame 4 and are wound around the circumference of the heating tube 5. The electric heating tubes 6 are wound around the circumference of the heating tube 5. A power supply structure is embedded and installed on the rear end of the furnace body 1. Both ends of the plurality of groups of electric heating tubes 6 are connected to the positive and negative electrodes on the power supply structure. This is the prior art.

[0039] The end of the furnace body 1 close to the preheating box 2 is provided with a feed hole 101 and a lower push hole 103 which are distributed up and down and correspond to the position of the heating cylinder 5. The end cover is provided with a discharge hole 102 which corresponds to the position of the lower push hole 103. The discharge hole 102 and the lower push hole 103 are in the same horizontal plane. The copper rod is introduced into the furnace body 1 through the feed hole 101 and discharged from the discharge hole 102. During the loading and unloading process, it is pushed by the pushing structure arranged corresponding to the position of the feed hole 101 and the lower push hole 103.

[0040] The first driving mechanism is used to drive the annular frame 4 to rotate in a circle, and the position of the heating cylinder 5 corresponding to the position of the feeding hole 101 is continuously changed, so that the multiple copper rods are pushed into the multiple heating cylinders 5 through the feeding hole 101 one by one;

[0041] Specifically, the first driving mechanism includes a driving sleeve fixedly connected to the lower end walls on the left and right sides of the furnace body 1, and a gear 2 10 arranged front and rear and corresponding to the front and rear end positions of the annular frame 4 is rotatably installed inside the driving sleeve through a rotating shaft, and the front and rear ends of the annular frame 4 are fixedly sleeved with a gear 1 9 meshing with the gear 2 10, and a driving motor 11 that synchronously drives the two rotating shafts is fixedly installed on the rear side of the furnace body 1;

[0042] A slot for a gear 1 9 to penetrate is provided on the outer end wall of the furnace body 1. The meshing transmission gear 1 9 and the gear 2 10 are used to drive the plurality of heating cylinders 5 on the annular frame 4 to perform circular rotational motion, so as to constantly change the heating position of the copper rod. The diameter of the heating cylinder 5 is set to be larger than the diameter of the copper rod. During the continuous circular rotation of the heating cylinder 5, the copper rod located inside it is flipped over, so as to further change the heating state of the copper rod, which is beneficial to improving the heating uniformity of each end face of the copper rod.

[0043] See also Figure 2 , Figure 4 as well as Figure 6 The end cover of the furnace body 1 is provided with an annular cavity which is arranged away from the discharge hole 102, and a filter sleeve 7 with a filter layer is embedded in the annular cavity. An exhaust pipe 8 is externally connected to the filter sleeve 7, and a pump is provided on the exhaust pipe 8. The other end of the exhaust pipe 8 is connected to the inside of the preheating box 2 through a hose;

[0044] A filter sleeve 7 with a filter layer is added at the end of the furnace body 1. The copper rod generates exhaust gas under the high-temperature preheating environment. The high-temperature exhaust gas is filtered by the filter layer and guided into the preheating box 2 by the exhaust pipe 8, providing a relatively low temperature first-stage preheating environment for the preheating box 2. Before entering the furnace body 1 for the second-stage preheating, the copper rod is first preheated in the preheating box 2 in advance.

[0045] Embodiment 2: This embodiment optimizes structures 2 and 3 based on embodiment 1, as follows:

[0046] See also Figure 1 , Figure 2 A support bracket 12 for supporting one end of the preheating box 2 is fixedly installed on the rear side of the furnace body 1, and a rotating sleeve 13 which is consistent with the axial direction of the feed hole 101 is fixedly embedded on the support bracket 12;

[0047] See also Figure 10-11 A preheating chamber is provided inside the preheating box 2, which is inclined downward toward the rotating sleeve 13 and has a feed port 201 at the upper end. A heating wire is embedded and installed on the bottom end surface of the preheating chamber. The front and rear ends of the preheating box 2 corresponding to the positions of the feed holes 101 are provided with upper push holes 202. Before the copper rods enter the furnace body 1 for the second-stage preheating, the multiple copper rods to be processed are placed in the preheating box 2 through the feed port 201. The multiple copper rods are laid flat in the preheating chamber, and the height of the preheating chamber is 1.2-1.5 times the diameter of the copper rods.

[0048] An electric push cylinder 16 corresponding to the position of the rear upper push hole 202 is installed at the rear end of the support frame 12, and an electric push cylinder 17 corresponding to the position of the lower push hole 103 is installed at the lower end of the support frame 12. The telescopic ends of the electric push cylinder 16 and the electric push cylinder 17 are located at the ends of the rear upper push hole 202 and the lower push hole 103 in the initial state.

[0049] The end of the support bracket 12 is rotatably installed in the rotating sleeve 13, and one end of the support bracket 12 connected with the rotating sleeve 13 is provided with a rounded portion rotatably connected with the inner wall of the rotating sleeve 13, and the support bracket 12 is installed with a second driving mechanism for rotating the end of the preheating box 2 along the inner wall of the rotating sleeve 13;

[0050] The second driving mechanism includes a gear 3 14 rotatably mounted on the rear end of the support bracket 12, a gear sleeve 15 meshing with the gear 3 14 is fixedly sleeved on the end of the rounded portion of the support bracket 12, and a driving motor 2 for rotating the gear 3 14 is embedded in the support bracket 12;

[0051] The gear sleeve 15 is a non-closed annular gear structure. By utilizing the cooperation of the driving motor 2, the gear 3 14 and the gear sleeve 15, the preheating box 2 is driven to repeatedly and slowly tilt and flip in the up and down directions, which is beneficial for the multiple copper rods pre-stored in the preheating box 2 to roll up and down along the bottom wall of the preheating chamber, constantly changing the contact surface between the copper rods and the heating surface, which is beneficial to improving the one-stage preheating effect of the copper rods in the preheating box 2.

[0052] It should be added here that in order to realize that the rear upper push hole 202 is in a closed state during the rotation of the preheating box 2, a circular magnetic block that matches the rear upper push hole 202 and is always limited to the inner side thereof can be added at the rear upper push hole 202, and a magnetic material that is magnetically attracted to the circular magnetic block is embedded at the end of the electric push cylinder 16. When multiple copper rods are placed in the preheating box 2 and are in a non-loading state, the telescopic end of the electric push cylinder 16 is separated from the rear upper push hole 202;

[0053] At this time, the circular magnetic block is limited to the rear upper pushing hole 202, which plays a sealing role on the rear upper pushing hole 202 and does not affect the rotation operation of the preheating box 2. When in the loading state, the upper pushing hole 202 on the preheating box 2 corresponds to the position of the feeding hole 101, pushing the electric push cylinder 16 forward, and the telescopic end of the electric push cylinder 16 contacts and magnetically positions the circular magnetic block, so as to facilitate pushing the copper rod at the bottom of the preheating chamber into the heating cylinder 5, without affecting the loading operation. The setting state of the circular magnetic block is not clearly marked in the figure, which can be easily achieved through existing means and will not be elaborated on here.

[0054] In the first round of preheating, the copper rod is heated by the heating wire in the preheating chamber, and the heating temperature of the heating wire is lower than the heating temperature of the electric heating tube 6. In the subsequent preheating, the heat flow between the furnace body 1 and the preheating box 2 is realized through the exhaust pipe 8. When the upper push hole 202 on the preheating box 2 is connected with the feed hole 101, the heat in the preheating box 2 is partially transferred to the furnace body 1, so as to realize the circulation treatment of high-temperature exhaust gas and supplement the heat to the preheating box 2.

[0055] The insulation box 3 is also provided with an insulation chamber which is tilted downward at one end and has a discharge port 301 at the bottom. A discharge hole 302 corresponding to the position of the discharge hole 102 is provided at the upper end of the insulation chamber. The discharge hole 302 is connected to the discharge hole 102 through a connecting pipe.

[0056] See also Figure 1-Figure 4 as well as Fig.12A receiving platform is provided below the heat preservation box 3, and a receiving trough is provided on the receiving platform which is inclined downward and away from the discharge port 301. After the copper rod in the furnace body 1 reaches the preheating temperature, the heating cylinder 5 is driven to rotate intermittently by the annular frame 4, and the electric push cylinder 17 is used to push forward, so that the copper rod in the heating cylinder 5 corresponding to the position of the lower push hole 103 and the discharge hole 102 is pushed toward the discharge hole 302 until the copper rod is pushed into the heat preservation box 3, and the copper rod is pre-stored in the heat preservation box 3 for heat preservation;

[0057] When the copper rod needs to be taken out for processing, the revolving door at the discharge port 301 is opened, and the copper rod falls from the discharge port 301 onto the receiving platform, and rolls along the receiving trough arranged outward, which is convenient for the staff to clamp the copper rod for subsequent processing operations.

[0058] In summary, the present invention improves the traditional simple preheating furnace structure. By adding a ring frame 4 with a plurality of heating tubes 5 inside the furnace body 1, the front and rear ends of the furnace body 1 are respectively provided with a feed hole 101 and a discharge hole 102 for copper rods to enter and exit, and a preheating box 2 and a heat preservation box 3 are added in the front and rear directions of the furnace body 1 to match the feed hole 101 and the discharge hole 102. Before the second-stage preheating, the copper rod to be treated is pre-placed in the preheating box 2 for a first-stage preheating, and the heat flow between the furnace body 1 and the preheating box 2 is realized through the exhaust pipe 8. When the upper push hole 202 on the preheating box 2 is connected with the feed hole 101, the heat in the preheating box 2 is partially conducted to the furnace body 1, so that the high-temperature exhaust gas circulation treatment is realized and the preheating box 2 is supplemented with heat.

[0059] The preheating box 2 is arranged to rotate along the axial direction of the feed hole 101, and a heating wire is also arranged in the preheating chamber. The end of the preheating box 2 is rotatably installed in the rotating sleeve 13 of the support bracket 12, and the preheating box 2 is driven to repeatedly flip in the up and down directions through the second driving mechanism, which is conducive to the multiple copper rods pre-stored in the preheating box 2 rolling up and down along the bottom wall of the preheating chamber, constantly changing the contact surface between the copper rods and the heating surface, which is conducive to improving the one-stage preheating effect of the copper rods in the preheating box 2;

[0060] After the first stage of preheating is completed, the first driving mechanism is used to drive the annular frame 4 to rotate, and then the electric push cylinder 16 is used to push the copper rods in the preheating box 2 into the heating cylinder 5 connected to the upper push hole 202 one by one, so as to complete the automatic loading of high-temperature copper rods one by one, and prevent multiple copper rods from being in an accumulation environment.

[0061] During the second stage preheating process, the electric heating tube 6 outside the heating tube 5 forms a uniform high temperature on the surface of the copper rod, and the annular frame 4 drives the heating tube 5 to rotate continuously, changing the heating state of the copper rod and improving the heating uniformity of each end surface of the copper rod;

[0062] After the second stage preheating is completed, the heating cylinder 5 is rotated to correspond to the position of the discharge hole 102 by rotating the annular frame 4, and the high-temperature copper rods after the second stage preheating are pushed into the insulation box 3 through the discharge hole 102 one by one in cooperation with the electric push cylinder 17 for insulation. When the first batch of copper rods are loaded into the furnace body for the second stage preheating, the second batch of copper rods are simultaneously loaded into the preheating box 2. When the first batch of copper rods fall to the insulation one by one, the second batch of copper rods are loaded from the preheating box 2 to the furnace body 1. This cycle is repeated to realize the continuous cycle of the three links of the first stage preheating, the second stage preheating and the insulation, thereby improving the processing preheating efficiency.

[0063] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A highly efficient and energy-saving copper rod continuous processing preheating device, comprising a furnace body (1) with an opening at one end and an end cover at the opening, wherein a preheating box (2) and a heat preservation box (3) are respectively provided in the front and rear directions of the furnace body (1), characterized in that: A stacking structure is rotatably installed inside the furnace body (1) through a first driving mechanism, and the stacking structure includes an annular frame (4) rotatably installed inside the furnace body (1), and a plurality of heating tubes (5) for stacking copper rods are distributed in an annular manner on the annular frame (4), and an electric heating tube (6) is provided outside the heating tube (5); an end portion of the furnace body (1) close to the preheating box (2) is provided with a feed hole (101) and a lower push hole (103) distributed up and down and corresponding to the position of the heating tube (5), and an end cover is provided with a discharge hole (102) corresponding to the position of the lower push hole (103); A support frame (12) for supporting one end of the preheating box (2) is fixedly installed on the rear side of the furnace body (1), and a second driving mechanism for rotating the preheating box (2) axially along the feed hole (101) is fixedly installed on the support frame (12). A preheating chamber is provided inside the preheating box (2), which is inclined downward toward the support frame (12) and has an inlet (201) at the upper end. The preheating box (2) is provided with upper push holes (202) at the front and rear ends corresponding to the position of the feed hole (101). An electric push cylinder (16) corresponding to the position of the rear upper push hole (202) is installed at the rear end of the support frame (12), and an electric push cylinder (17) corresponding to the position of the lower push hole (103) is installed at the lower end of the support frame (12).

2. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 1 is characterized in that: An inspection plate is rotatably mounted on the upper end of one side of the furnace body (1), and a graphite sheath (104) is embedded and mounted on the inner wall of the furnace body (1) and the inspection plate.

3. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 1 is characterized in that: The end cover is provided with an annular cavity which is arranged away from the discharge hole (102), a filter sleeve (7) with a filter layer is embedded and installed in the annular cavity, and an exhaust pipe (8) is externally connected to the filter sleeve (7).

4. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 1 is characterized in that: The first driving mechanism comprises a driving sleeve fixedly connected to the lower end walls on the left and right sides of the furnace body (1), wherein a second gear (10) arranged front and rear and corresponding to the front and rear end positions of the annular frame (4) is rotatably mounted inside the driving sleeve via a rotating shaft, and the front and rear ends of the annular frame (4) are both fixedly sleeved with a gear (9) meshingly connected to the second gear (10), and a driving motor (11) for synchronously driving the two rotating shafts is fixedly mounted on the rear side of the furnace body (1).

5. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 1 is characterized in that: A heating wire is embedded and installed on the bottom end surface of the preheating chamber, and the heating temperature of the heating wire is lower than the heating temperature of the electric heating tube.

6. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 1 is characterized in that: A rotating sleeve (13) is fixedly mounted on the support frame (12) and is in the same axial direction as the feed hole (101). The end of the support frame (12) is rotatably mounted in the rotating sleeve (13). One end of the support frame (12) connected to the rotating sleeve (13) is provided with a rounded portion that is rotatably connected to the inner wall of the rotating sleeve (13).

7. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 6 is characterized in that: The second driving mechanism comprises a gear three (14) rotatably mounted on the rear end of the support frame (12); a gear sleeve (15) is fixedly sleeved on the end of the rounded portion of the support frame (12) and meshed with the gear three (14); and a driving motor two is embedded in the support frame (12) for rotationally driving the gear three (14).

8. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 1 is characterized in that: The insulation box (3) is also provided with an insulation chamber which is inclined downward at one end and has a discharge port (301) at the bottom. The upper end of the insulation chamber is provided with a discharge hole (302) corresponding to the position of the discharge hole (102). The discharge hole (302) is connected to the discharge hole (102) via a connecting pipe.

9. The high-efficiency and energy-saving copper rod continuous processing preheating device according to claim 8 is characterized in that: A material receiving platform is provided below the heat preservation box (3), and a material receiving trough is provided on the material receiving platform and is arranged at a side away from the discharge port (301) and is inclined downward.

Images