Annealing furnace for seamless stainless steel pipe machining
By introducing guide frames and heat circulation systems into seamless stainless steel pipe processing annealing furnace, the problems of equipment flexibility and insufficient heat utilization are solved, adaptability and efficient heat utilization for pipes of different diameters are achieved, and the efficiency of the annealing process is improved. and cost-effective.
Patent Information
- Application Number
- CN202420444231.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-08
AI Technical Summary
The existing annealing furnaces for seamless stainless steel pipe processing lack flexibility and versatility, fail to effectively utilize preheating treatment, and are seriously wasted during heating and cooling, resulting in low energy efficiency and high production costs.
An annealing furnace including support legs, workbench, cooling box, motor, transmission shaft, guide frame, preheating mechanism, heating box and cooling mechanism is designed to adapt the pipes of different diameters through the rotating shaft and gear set of the guide frame. In order to use the heat cycle between the cooling box and the heating box for preheating and cooling, improving energy utilization efficiency.
It enhances the adaptability and versatility of the equipment, realizes efficient use of heat, reduces energy waste, and improves the efficiency and cost-effectiveness of the annealing process.
Smart Images
Figure CN222226480U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of seamless stainless steel pipe processing, in particular to an annealing furnace for seamless stainless steel pipe processing. Background Art
[0002] Seamless stainless steel pipe is a hollow long strip of steel, which is widely used as a pipe for conveying fluids. It needs to go through multiple processing steps to complete the manufacturing. Among them, stainless steel pipes are usually annealed during manufacturing. The annealing equipment is a stainless steel continuous annealing furnace, which is mainly used for heat treatment of stainless steel pipe products to achieve the purpose of reducing hardness, improving plasticity, refining grain size, and uniform steel structure composition.
[0003] However, the existing annealing furnaces for processing seamless stainless steel pipes, firstly, are usually designed with only one annular groove on their conveyor racks, which means that they can only process seamless stainless steel pipes of a specific diameter and lack the necessary flexibility and versatility; secondly, the existing annealing furnaces often lack the preheating treatment link for seamless stainless steel pipes. Preheating is an important step in the annealing process, which can prepare for the subsequent in-depth heating and ensure that the steel pipes can be heated evenly and efficiently; finally, the existing annealing furnaces also have obvious deficiencies in energy utilization. During the heating and cooling process, the seamless stainless steel pipes will release a lot of heat. However, this heat is often wasted and not effectively recovered and utilized, which not only reduces the energy efficiency of the equipment, but also increases production costs. Utility Model Content
[0004] The utility model aims to provide an annealing furnace for processing seamless stainless steel pipes to solve the problems mentioned in the background technology.
[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0006] The utility model is an annealing furnace for processing seamless stainless steel pipes, comprising support legs, a workbench, a cooling box, a motor, a transmission shaft, a guide frame, a preheating mechanism, a heating box and a cooling mechanism, wherein four support legs are provided, wherein the support legs are uniformly fixed to the lower side of the workbench by bolts; the lower side of the workbench is fixed with a cooling box by bolts, and the upper side of the workbench is respectively fixed with a motor, a guide frame, a preheating mechanism, a heating box and a cooling mechanism by bolts, wherein a plurality of guide frames are provided; a transmission shaft is fixed to the output end of the motor, wherein the outer side surfaces of both ends of the transmission shaft are rotatably connected to the workbench by support bearings, and the outer side surface of the transmission shaft is fixed to a plurality of the guide frames; the heating box is provided between the preheating mechanism and the cooling mechanism.
[0007] Furthermore, the guide frame includes a rotating shaft, a gear set, a sleeve and a nut, the outer side surfaces at both ends of the rotating shaft are rotatably connected to the workbench through support bearings, and one end of the rotating shaft is connected to the transmission shaft through a gear set, wherein the gear set is composed of two bevel gears, which are meshed with each other; the sleeve is movably sleeved on the outer side surface of the rotating shaft, wherein nuts are respectively arranged on both sides of the sleeve, and the nuts are fixed to the rotating shaft through threaded engagement; the outer side surface of the sleeve is provided with annular grooves of different diameters, and such an arrangement facilitates the conduction of seamless stainless steel pipes of different diameters.
[0008] Furthermore, the cooling box includes a first box body, a first coil and a water pump, the first box body is fixed to the lower side of the workbench by bolts, and the interior of the first box body is filled with coolant; the interior of the first box body is fixed with a first coil by a pipe clamp, the shape of the first coil is a continuous "S" shape, and one end of the first coil is connected to the preheating mechanism through a joint; the other end of the first coil is connected to the input end of the water pump through a joint, wherein the output end of the water pump is connected to the cooling mechanism through a joint, such an arrangement can cool the liquid discharged from the preheating mechanism and then transport it to the cooling mechanism.
[0009] Furthermore, the preheating mechanism includes a first shell, a first mounting plate, a first liquid outlet pipe, a first liquid inlet pipe, a first through-cavity and a first inner cavity, and the outer side surfaces at both ends of the first shell are fixed with the first mounting plates by bolts, wherein the first mounting plates are fixed to the side surfaces of the workbench by bolts; the outer side surface of the end of the first shell away from the heating box is fixed with the first liquid outlet pipe by a joint, wherein the first liquid outlet pipe is fixed to the first coil by the joint; the outer side surface of the end of the first shell close to the heating box is fixed with the first liquid inlet pipe by a joint, and the other end of the first liquid inlet pipe is fixed to the heating box by the joint; the first shell is provided with a first through-cavity and a first inner cavity respectively, wherein a seamless stainless steel pipe is movably passed through the interior of the first through-cavity, and the first inner cavity is communicated with the first liquid outlet pipe and the first liquid inlet pipe respectively. Such an arrangement can preheat the seamless stainless steel pipe.
[0010] Furthermore, the heating box includes a second box body, a heating electric furnace and a second coil, the second box body is fixed to the side of the workbench by bolts, and the second coil is fixed inside the second box body by a pipe clamp, and the shape of the second coil is a continuous "S" shape; one end of the second coil is connected to the cooling mechanism through a joint, and the other end of the second coil is connected to the first liquid inlet pipe through a joint; a plurality of the heating electric furnaces are arranged inside the second box body, and the heating electric furnaces are fixed to the side of the workbench by bolts. Such an arrangement can heat the seamless stainless steel pipe passing through, and can heat the liquid discharged from the cooling mechanism and send it into the preheating mechanism.
[0011] Furthermore, the cooling mechanism includes a second shell, a second mounting plate, a second liquid inlet pipe, a second liquid outlet pipe, a second through-cavity and a second inner cavity, and the outer side surfaces at both ends of the second shell are fixed with second mounting plates by bolts, wherein the second mounting plates are fixed to the side surfaces of the workbench by bolts; the outer side surface of the end of the second shell away from the heating box is fixed with a second liquid outlet pipe by a joint, wherein the second liquid outlet pipe is fixed to the second coil by a joint; the outer side surface of the end of the second shell close to the heating box is fixed with a second liquid inlet pipe by a joint, and the other end of the second liquid inlet pipe is fixed to the output end of the water pump by a joint; the interior of the second shell is respectively provided with a second through-cavity and a second inner cavity, wherein a seamless stainless steel pipe is movably passed through the interior of the second through-cavity, and the second inner cavity is respectively communicated with the second liquid outlet pipe and the second liquid inlet pipe, such an arrangement can cool the seamless stainless steel pipe.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The setting of the guide frame of the utility model can adjust the positions of the two nuts according to the diameter of the seamless stainless steel pipe so that the corresponding annular groove on the sleeve is aligned with the seamless stainless steel pipe, thereby enhancing the adaptability and versatility of the equipment. When the rotating shaft rotates, the gear set can drive the rotating shaft and the sleeve to rotate, thereby driving the seamless stainless steel pipe to move.
[0014] 2. The arrangement of the cooling box, preheating mechanism, heating box and cooling mechanism of the utility model can utilize the heat generated when the seamless stainless steel pipe is cooled by the cooling mechanism and the heat generated when the seamless stainless steel pipe is heated by the heating box. The seamless stainless steel pipe is preheated by the heat, thereby achieving efficient energy utilization and reducing energy waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.
[0018] Figure 3 It is a structural schematic diagram of a guide frame of the utility model.
[0019] Figure 4 It is a structural schematic diagram of the preheating mechanism of the utility model.
[0020] Figure 5 It is a schematic diagram of the cooling mechanism structure of the utility model.
[0021] In the figure:
[0022] 1-support leg, 2-workbench, 3-cooling box, 31-first box body, 32-first coil, 33-water pump, 4-motor, 5-transmission shaft, 6-guide frame, 61-rotating shaft, 62-gear set, 63-sleeve, 64-nut, 7-preheating mechanism, 71-first outer shell, 72-first mounting plate, 73-first liquid outlet pipe, 74-first liquid inlet pipe, 75-first through-hole, 76-first inner cavity, 8-heating box, 81-second box body, 82-heating furnace, 83-second coil, 9-cooling mechanism, 91-second outer shell, 92-second mounting plate, 93-second liquid inlet pipe, 94-second liquid outlet pipe, 95-second through-hole, 96-second inner cavity. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "all around" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.
[0025] See also Figure 1As shown, the utility model is an annealing furnace for processing seamless stainless steel pipes, comprising a support leg 1, a workbench 2, a cooling box 3, a motor 4, a transmission shaft 5, a guide frame 6, a preheating mechanism 7, a heating box 8 and a cooling mechanism 9, wherein four support legs 1 are provided, wherein the support legs 1 are evenly fixed to the lower side of the workbench 2 by bolts; the lower side of the workbench 2 is fixed with a cooling box 3 by bolts, and the upper side of the workbench 2 is respectively fixed with a motor 4, a guide frame 6, a preheating mechanism 7, a heating box 8 and a cooling mechanism 9 by bolts, wherein a plurality of guide frames 6 are provided; a transmission shaft 5 is fixed to the output end of the motor 4, wherein the outer side surfaces at both ends of the transmission shaft 5 are rotatably connected to the workbench 2 by support bearings, and the outer side surface of the transmission shaft 5 is fixed to a plurality of guide frames 6; the heating box 8 is provided between the preheating mechanism 7 and the cooling mechanism 9.
[0026] like Figure 3 As shown, the guide frame 6 includes a rotating shaft 61, a gear set 62, a sleeve 63 and a nut 64. The outer side surfaces at both ends of the rotating shaft 61 are rotatably connected to the workbench 2 through support bearings, and one end of the rotating shaft 61 is connected to the transmission shaft 5 through a gear set 62, wherein the gear set 62 is composed of two bevel gears and are meshed with each other; the sleeve 63 is movably sleeved on the outer side surface of the rotating shaft 61, wherein nuts 64 are respectively arranged on both sides of the sleeve 63, and the nuts 64 are fixed to the rotating shaft 61 through threaded engagement; annular grooves of different diameters are provided on the outer side surface of the sleeve 63. When in use, the positions of the two nuts 64 can be adjusted according to the diameter of the seamless stainless steel pipe so that the corresponding annular grooves on the sleeve 63 are aligned with the seamless stainless steel pipe. When the rotating shaft 61 rotates, the gear set 62 can drive the rotating shaft 61 and the sleeve 63 to rotate, thereby driving the seamless stainless steel pipe to move.
[0027] like Figure 2 As shown, the cooling box 3 includes a first box body 31, a first coil 32 and a water pump 33. The first box body 31 is fixed to the lower side of the workbench 2 by bolts, and the interior of the first box body 31 is filled with coolant; the interior of the first box body 31 is fixed with a first coil 32 by a pipe clamp, and the shape of the first coil 32 is a continuous "S" shape, and one end of the first coil 32 is connected to the preheating mechanism 7 through a joint; the other end of the first coil 32 is connected to the input end of the water pump 33 through a joint, wherein the output end of the water pump 33 is connected to the cooling mechanism 9 through a joint. When in use, the liquid inside the preheating mechanism 7 can flow into the first coil 32, and then perform heat exchange with the coolant inside the first coil 32, thereby cooling it, and then under the action of the water pump 33, the cooled liquid is sent to the interior of the cooling mechanism 9.
[0028] like Figure 4As shown, the preheating mechanism 7 includes a first shell 71, a first mounting plate 72, a first liquid outlet pipe 73, a first liquid inlet pipe 74, a first through cavity 75 and a first inner cavity 76, the first shell 71 has first mounting plates 72 fixed to the outer side surfaces at both ends by bolts, wherein the first mounting plates 72 are fixed to the upper side surface of the workbench 2 by bolts; the first liquid outlet pipe 73 is fixed to the outer side surface of the end of the first shell 71 away from the heating box 8 by a joint, wherein the first liquid outlet pipe 73 is fixed to the first coil 32 by a joint; the first shell 71 has first liquid inlet pipe 74 fixed to the outer side surface of the end close to the heating box 8 by a joint, and the other end of the first liquid inlet pipe 74 is fixed to the heating box 8 by a joint The first outer shell 71 has a first through cavity 75 and a first inner cavity 76 respectively formed inside, wherein a seamless stainless steel pipe is movably passed through the interior of the first through cavity 75, and the first inner cavity 76 is respectively communicated with the first liquid outlet pipe 73 and the first liquid inlet pipe 74. When in use, the high-temperature liquid discharged from the heating box 8 first enters the first inner cavity 76 through the first liquid inlet pipe 74, and then the liquid exchanges heat with the seamless stainless steel pipe passing through the interior of the first through cavity 75. The seamless stainless steel pipe absorbs the heat of the liquid in the process, thereby achieving a preheating effect. The liquid after the heat exchange is then transported to the interior of the first coil 32 through the first liquid outlet pipe 73 for further cooling treatment.
[0029] like Figure 2 As shown, the heating box 8 includes a second box body 81, a heating furnace 82 and a second coil 83. The second box body 81 is fixed to the upper side of the workbench 2 by bolts, and the second coil 83 is fixed inside the second box body 81 by a pipe clamp, and the shape of the second coil 83 is a continuous "S" shape; one end of the second coil 83 is connected to the cooling mechanism 9 through a joint, and the other end of the second coil 83 is connected to the first liquid inlet pipe 74 through a joint; a plurality of heating furnaces 82 are arranged inside the second box body 81, and the heating furnaces 82 are fixed to the upper side of the workbench 2 by bolts. When in use, the seamless stainless steel pipe is sent into the heating box 8 and heated by the heating furnace 82. At the same time, the liquid discharged from the cooling mechanism 9 flows into the second coil 83 and exchanges heat with the hot air generated by the heating furnace 82. In this process, the liquid is heated to a high temperature state and then sent into the preheating mechanism 7 through the first liquid inlet 74.
[0030] like Figure 5As shown, the cooling mechanism 9 includes a second shell 91, a second mounting plate 92, a second liquid inlet pipe 93, a second liquid outlet pipe 94, a second through cavity 95 and a second inner cavity 96, the outer side surfaces of both ends of the second shell 91 are fixed with the second mounting plates 92 by bolts, wherein the second mounting plates 92 are fixed to the upper side surface of the workbench 2 by bolts; the outer side surface of the end of the second shell 91 away from the heating box 8 is fixed with the second liquid outlet pipe 94 by a joint, wherein the second liquid outlet pipe 94 is fixed to the second coil 83 by a joint; the outer side surface of the end of the second shell 91 close to the heating box 8 is fixed with the second liquid inlet pipe 93 by a joint, and the other end of the second liquid inlet pipe 93 is fixed to the output end of the water pump 33 by a joint; the interior of the second shell 91 is respectively provided with a second through cavity 95 and a second inner cavity 96, wherein a seamless stainless steel pipe is movably passed through the interior of the second through cavity 95, and the second inner cavity 96 is respectively communicated with the second liquid outlet pipe 94 and the second liquid inlet pipe 93, and when in use, the liquid discharged from the cooling box 3 first enters the interior of the second inner cavity 96 through the second liquid inlet pipe 93. Then, the liquid exchanges heat with the seamless stainless steel pipe passing through the second through cavity 95, and the seamless stainless steel pipe releases heat to the liquid during the process, thereby achieving a cooling effect. The liquid after the heat exchange is then transported to the inside of the second coil 83 through the second liquid outlet pipe 94.
[0031] See also Figure 1-5 As shown, the utility model is an annealing furnace for processing seamless stainless steel pipes, and its working principle is: when in use, the transmission shaft 5 is first driven to rotate by the motor 4, and the transmission shaft 5 can drive the guide frame 6 to work during the rotation, thereby driving the seamless stainless steel pipe to pass through the preheating mechanism 7, the heating box 8 and the cooling mechanism 9 in sequence, wherein the preheating mechanism 7 preheats the seamless stainless steel pipe, the heating box 8 heats the seamless stainless steel pipe, and the cooling mechanism 9 cools the seamless stainless steel pipe, thereby completing the annealing process.
[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An annealing furnace for processing seamless stainless steel pipes, comprising a support leg (1), a workbench (2), a cooling box (3), a motor (4), a transmission shaft (5), a guide frame (6), a preheating mechanism (7), a heating box (8) and a cooling mechanism (9), characterized in that: Four support legs (1) are provided, wherein the support legs (1) are all fixed to the lower side of the workbench (2); a cooling box (3) is fixed to the lower side of the workbench (2), and a motor (4), a guide frame (6), a preheating mechanism (7), a heating box (8) and a cooling mechanism (9) are respectively fixed to the upper side of the workbench (2), wherein a plurality of guide frames (6) are provided; a transmission shaft (5) is fixed to the output end of the motor (4), wherein both ends of the outer side surface of the transmission shaft (5) are rotationally connected to the workbench (2), and the outer side surface of the transmission shaft (5) is fixed to a plurality of the guide frames (6); the heating box (8) is provided between the preheating mechanism (7) and the cooling mechanism (9).
2. An annealing furnace for processing seamless stainless steel pipes as claimed in claim 1, characterized in that: The guide frame (6) comprises a rotating shaft (61), a gear set (62), a sleeve (63) and a nut (64); both ends of the outer side surfaces of the rotating shaft (61) are rotatably connected to the workbench (2), and one end of the rotating shaft (61) is connected to the transmission shaft (5) through the gear set (62), wherein the gear set (62) is composed of two bevel gears that are meshed with each other; the sleeve (63) is movably sleeved on the outer side surface of the rotating shaft (61), wherein nuts (64) are respectively arranged on both sides of the sleeve (63), and the nuts (64) are fixed to the rotating shaft (61) through threaded meshing; the outer side surface of the sleeve (63) is provided with annular grooves of different diameters.
3. The annealing furnace for processing seamless stainless steel pipe according to claim 1, characterized in that: The cooling box (3) comprises a first box body (31), a first coil (32) and a water pump (33); the first box body (31) is fixed to the lower side of the workbench (2), and the interior of the first box body (31) is filled with cooling liquid; a first coil (32) is fixed inside the first box body (31), the shape of the first coil (32) is a continuous "S" shape, and one end of the first coil (32) is connected to the preheating mechanism (7); the other end of the first coil (32) is connected to the input end of the water pump (33), wherein the output end of the water pump (33) is connected to the cooling mechanism (9).
4. An annealing furnace for processing seamless stainless steel pipes as claimed in claim 3, characterized in that: The preheating mechanism (7) comprises a first outer shell (71), a first mounting plate (72), a first liquid outlet pipe (73), a first liquid inlet pipe (74), a first through cavity (75) and a first inner cavity (76); first mounting plates (72) are fixed to the outer side surfaces of both ends of the first outer shell (71), wherein the first mounting plates (72) are fixed to the upper side surface of the workbench (2); a first liquid outlet pipe (73) is fixed to the outer side surface of one end of the first outer shell (71) away from the heating box (8), wherein the first liquid outlet pipe (73) ) is fixed to the first coil (32); a first liquid inlet pipe (74) is fixed to the outer side surface of one end of the first shell (71) close to the heating box (8), and the other end of the first liquid inlet pipe (74) is fixed to the heating box (8); a first through cavity (75) and a first inner cavity (76) are respectively opened inside the first shell (71), wherein a seamless stainless steel pipe is movably passed through the interior of the first through cavity (75), and the first inner cavity (76) is respectively communicated with the first liquid outlet pipe (73) and the first liquid inlet pipe (74).
5. An annealing furnace for processing seamless stainless steel pipes as claimed in claim 4, characterized in that: The heating box (8) comprises a second box body (81), a heating electric furnace (82) and a second coil (83); the second box body (81) is fixed to the upper side of the workbench (2), and the second coil (83) is fixed inside the second box body (81), and the shape of the second coil (83) is a continuous "S" shape; one end of the second coil (83) is connected to the cooling mechanism (9), and the other end of the second coil (83) is connected to the first liquid inlet pipe (74); a plurality of heating electric furnaces (82) are arranged inside the second box body (81), and the heating electric furnaces (82) are all fixed to the upper side of the workbench (2).
6. An annealing furnace for processing seamless stainless steel pipes as claimed in claim 5, characterized in that: The cooling mechanism (9) comprises a second outer shell (91), a second mounting plate (92), a second liquid inlet pipe (93), a second liquid outlet pipe (94), a second through cavity (95) and a second inner cavity (96); second mounting plates (92) are fixed to the outer side surfaces of both ends of the second outer shell (91), wherein the second mounting plates (92) are fixed to the upper side surface of the workbench (2); a second liquid outlet pipe (94) is fixed to the outer side surface of one end of the second outer shell (91) away from the heating box (8), wherein the second liquid outlet pipe (94) is connected to the second inner cavity (96). The two coils (83) are fixed to each other; a second liquid inlet pipe (93) is fixed to the outer side surface of one end of the second outer shell (91) close to the heating box (8), and the other end of the second liquid inlet pipe (93) is fixed to the output end of the water pump (33); a second through cavity (95) and a second inner cavity (96) are respectively opened inside the second outer shell (91), wherein a seamless stainless steel pipe is movably passed through the interior of the second through cavity (95), and the second inner cavity (96) is respectively communicated with the second liquid outlet pipe (94) and the second liquid inlet pipe (93).