Heat treatment conveying device integrating temperature compensation and waste heat recovery

Abstract

The application discloses a heat treatment conveying device integrating temperature compensation and waste heat recovery, and relates to the technical field of heat treatment conveying. The heat treatment conveying device comprises a moving driving mechanism, a plurality of heat conducting members and a heat conducting medium. The heat conducting members are hollow structures. The conveying device is closed loop and is divided into at least a heat treatment zone, a discharge zone, an injection zone and a preheating zone. When the heat conducting member carrying the heat conducting medium is moved from the heat treatment zone to the discharge zone, the heat conducting medium in the heat conducting member is transferred to the inside of the heat conducting member in the injection zone. The injection zone is a preheating zone. After the heat conducting member is injected with the heat conducting medium with a certain amount of heat, the workpiece is preheated in the preheating zone. Through the process, the heat energy in the heat treatment process of the workpiece can be used for preheating the workpiece without multiple medium transmission, and the direct recovery of waste heat and the heat energy closed loop are realized.

Description

Technical Field

[0001] This invention relates to the field of heat treatment conveying technology, specifically to a heat treatment conveying device that integrates temperature compensation and waste heat recovery. Background Technology

[0002] Heat treatment conveying devices are equipment used to automatically or semi-automatically transport workpieces during the heat treatment process. Common conveying devices include asynchronous moving conveying devices such as roller conveyors and synchronous moving conveying devices such as mesh belt conveyors. Considering the high-temperature environment during the heat treatment process, synchronous moving conveying devices are generally used to avoid metal fatigue caused by the conveying device being located in the furnace for a long time.

[0003] In the heat treatment process of workpieces, to avoid thermal shock, preheating (temperature compensation) is a crucial preliminary step to ensure the final heat treatment quality, improve processing efficiency, and extend workpiece life. Workpiece preheating may involve either using waste heat from the heat treatment furnace or employing a separate heating mechanism. (1) In the heat treatment process of the workpiece, the conveying device will generally cause a certain amount of heat loss. Specifically, the conveyor absorbs heat after entering the furnace and is cooled after exiting the furnace. The heat is either converted or directly lost. (2) If it is necessary to recycle the waste heat on the conveyor belt, a heat exchanger or similar device is required. During this process, the heat energy conversion may need to be transferred through multiple media, such as the furnace and radiant panels, resulting in a high heat loss rate. (3) Whether the workpiece is preheated by using waste heat or by using a separate heating mechanism, there is a lot of energy input.

[0004] In view of the above, we propose a heat treatment conveying device that integrates temperature compensation and waste heat recovery. Summary of the Invention

[0005] [Technical problems solved] To address the shortcomings of existing technologies, this invention provides a heat treatment conveying device that integrates temperature compensation and waste heat recovery. It has advantages such as short-path heat transfer, belt preheating, and closed-loop thermal energy, and can effectively solve the problems in the background technology.

[0006] [Technical Solution] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a heat treatment conveying device integrating temperature compensation and waste heat recovery, including a moving drive mechanism, and also including a plurality of heat-conducting components connected to the moving drive mechanism, and a heat-conducting medium. The heat-conducting components have a hollow structure. The conveying device is a closed loop and is at least divided into a heat treatment zone, a discharge zone, an injection zone, and a preheating zone. The heat-conducting components are configured to: move from the heat treatment zone to the discharge zone, from the discharge zone to the injection zone, from the injection zone to the preheating zone, and from the preheating zone to the heat treatment zone, carrying the heat-conducting medium in the preheating zone and the heat treatment zone, discharging the carried heat-conducting medium in the discharge zone, and injecting the discharged heat-conducting medium in the injection zone. The heat-conducting component includes a cylinder with a connected chamber and a flow channel II. The axial distance between the flow channel II and the cylinder is greater than the maximum outer diameter of the chamber. When the cylinder is not under rotational force, the flow channel II is in the highest position. The conveying device also includes a rotation drive mechanism for rotating the cylinder in the discharge zone.

[0007] Preferably, the moving drive mechanism is a chain + sprocket type moving drive mechanism, which mainly drives the chain to move through the sprocket, and the chain drives the heat-conducting component to move. The heat-conducting component is connected to the chain and can be fixedly connected.

[0008] Preferably, the heat-conducting component is made of a material that has both high heat resistance and high thermal conductivity. This is an optional arrangement for those skilled in the art depending on the actual implementation situation. For example, it can be a nickel-based high-temperature alloy or austenitic stainless steel.

[0009] Preferably, the closed-loop conveying device refers to the conveying device being connected end to end, which is an optional setup that can be implemented by those skilled in the art with reference to existing technology.

[0010] Preferably, the distance between the axis of the flow channel and the cylinder is greater than the maximum outer diameter of the chamber, which means that, under the cross-sectional condition of the cylinder, the perpendicular distance between the flow channel and the axis of the cylinder is greater than the maximum outer diameter of the chamber.

[0011] As a preferred option, in order to allow the heat transfer medium in the chamber to be discharged more smoothly, the inner wall of the chamber can be provided with a ceramic coating, or it can be provided with an inclined surface to satisfy the physical law of liquid flowing to the lowest point.

[0012] Preferably, the rotation drive mechanism can be any type of rotation drive component that is well known and understood by those skilled in the art, such as a motor or a motor plus a reducer, capable of driving the cylinder to rotate.

[0013] Preferably, a movable seat is rotatably connected to the cylinder near the second flow channel, and a slide is fitted to the movable seat to guide the movement of the movable seat. A first flow channel is provided on the movable seat. At least in the injection area, the first flow channel on the movable seat faces upward, and at least in the discharge area, the first flow channel on the movable seat faces downward. In the injection area and the discharge area, the first flow channel and the second flow channel are connected.

[0014] Preferably, the slide is fixed to the outside and cannot be moved.

[0015] Preferably, when the heat-conducting medium is a liquid, the position of the discharge zone is higher than the position of the injection zone, and a connecting member is provided between the discharge zone and the injection zone for communication, through which the heat-conducting medium in the heat-conducting element in the discharge zone flows to the heat-conducting element in the injection zone.

[0016] Preferably, the connecting member is a high-temperature resistant metal pipe.

[0017] Preferably, the connecting member is connected to the slide rail, and a flow channel three is provided on the slide rail to communicate with the connecting member. The flow channel three can communicate with the flow channel one on the movable seat.

[0018] Preferably, a plug is movably provided on the second flow channel, the plug fitting the structure of the second flow channel, for controlling the flow state between the second flow channel and the chamber.

[0019] Preferably, a guide portion is provided on the slide block. The guide portion is a spiral shape with an equal diameter, and the plug is slidably connected to the guide portion. The plug and the guide portion are configured such that the change in the circumferential position of the plug in the guide portion corresponds to the change in the position of the plug inside the flow channel.

[0020] Preferably, the guide portion is a full circle, for example, formed by connecting two sets of mutually symmetrical half-circles of spirals. In this way, one half-circle spiral is used to change the connection state of the second flow channel. When the cylinder is continuously rotated until the plug moves to the other half-circle spiral, the change in the connection state of the second flow channel is reset.

[0021] Preferably, the cylinder includes a lightweight cylinder body and a heavyweight cylinder body that cooperates with the lightweight cylinder body, and the second flow channel is formed on the lightweight cylinder body.

[0022] As a preferred option, taking the same volume of lightweight cylinder and heavy cylinder as an example, the lightweight cylinder has a lower density and the heavy cylinder has a higher density. In this way, under non-rotational stress, the heavy cylinder is always located at the bottom due to its own weight, so that the flow channel on the lightweight cylinder always faces upward. For example, austenitic chromium-nickel stainless steel is used as the lightweight cylinder and nickel-based alloy is used as the heavy cylinder.

[0023] Preferably, a ball head is provided at the part of the plug that connects with the guide portion. The plug and the guide portion are slidably connected through the ball head. The connection between the ball head and the guide portion reduces the contact friction between them and ensures the smooth movement of the plug.

[0024] Preferably, the conveying device further includes a cooling zone, which is configured to be located in the sequential travel between the discharge zone and the injection zone, and is used to cool the heat-conducting element when the heat-conducting element moves to the cooling zone.

[0025] [Beneficial Effects] Compared with the prior art, the present invention provides a heat treatment conveying device that integrates temperature compensation and waste heat recovery, which has the following beneficial effects: This integrated temperature compensation and waste heat recovery heat treatment conveying device uses a heat-conducting component as a support belt for conveying the workpiece. The heat-conducting component is filled with a heat-conducting medium. When the heat-conducting component carrying the heat-conducting medium moves from the heat treatment zone to the discharge zone, the heat-conducting medium inside the heat-conducting component is transferred to the interior of the heat-conducting component located in the injection zone. The injection zone serves as the pre-process area before the preheating zone. After the heat-conducting component is injected with a heat-conducting medium with a certain amount of heat, the workpiece is preheated in the preheating zone. This process allows the heat energy from the heat treatment process to be used for preheating the workpiece without having to be transferred through multiple media, realizing direct recovery of waste heat and closed-loop heat energy. By significantly reducing external energy input, it helps to reduce carbon emissions and is in line with the industrial development concept of green manufacturing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a heat treatment conveying device integrating temperature compensation and waste heat recovery according to the present invention.

[0027] Figure 2 This is a schematic diagram of the heat-conducting component in a heat treatment conveying device that integrates temperature compensation and waste heat recovery according to the present invention.

[0028] Figure 3 This is a schematic diagram of the structure of the movable seat for the heat-conducting component in a heat treatment conveying device integrating temperature compensation and waste heat recovery according to the present invention.

[0029] Figure 4 This is a cross-sectional view of the moving seat used for the heat-conducting component in a heat treatment conveying device that integrates temperature compensation and waste heat recovery according to the present invention.

[0030] Figure 5 This is a schematic diagram of the structure of the heat-conducting cylinder used in a heat treatment conveying device integrating temperature compensation and waste heat recovery according to the present invention.

[0031] Figure 6This is a cross-sectional view of the structure of the heat-conducting cylinder used in a heat treatment conveying device integrating temperature compensation and waste heat recovery according to the present invention.

[0032] Figure 7 This is a schematic diagram illustrating the operational state changes of the heat-conducting component in a heat treatment conveying device integrating temperature compensation and waste heat recovery according to the present invention.

[0033] Figure 8 This is a schematic diagram of the slide structure in a heat treatment conveying device integrating temperature compensation and waste heat recovery according to the present invention.

[0034] Figure 9 This is an overall regional distribution diagram of a heat treatment conveying device integrating temperature compensation and waste heat recovery according to a preferred embodiment of the present invention.

[0035] Figure 10 This is a schematic diagram illustrating the operation of a heat treatment conveying device integrating temperature compensation and waste heat recovery according to a preferred embodiment of the present invention.

[0036] In the picture: 001. Workpiece; 1. Moving drive mechanism; 2. Heat-conducting component; 3. Rotating drive mechanism; 4. Slide rail; 5. Baffle; 21. Cylinder; 22. Movable base; 23. Gear; 211. Lightweight cylindrical body; 212. Chamber; 213. Flow channel two; 214. Plug; 2111. Heavy cylinder; 2112. Sealing ring; 2141. Ball head; 221. Slide; 222. Flow channel one; 223. Guide section; 224. Sealing groove; 41. Flow channel three; 42. Connecting component. Detailed Implementation

[0037] To make the technical means, creative features, achieved objectives, and functional effects of this invention readily understandable, the invention will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0038] Example 1 To address the shortcomings of existing technologies, such as Figure 1As shown, the present invention provides a heat treatment conveying device integrating temperature compensation and waste heat recovery, including a moving drive mechanism 1, and multiple heat-conducting components 2 connected to the moving drive mechanism 1, as well as a heat-conducting medium. The heat-conducting components 2 have a hollow structure. The conveying device is a closed loop and is at least divided into a heat treatment zone, a discharge zone, an injection zone, and a preheating zone. The heat-conducting components 2 are configured to: move from the heat treatment zone to the discharge zone, from the discharge zone to the injection zone, from the injection zone to the preheating zone, and from the preheating zone to the heat treatment zone, carry the heat-conducting medium in the preheating zone and the heat treatment zone, discharge the carried heat-conducting medium in the discharge zone, and inject the discharged heat-conducting medium in the injection zone.

[0039] Among them, the mobile drive mechanism 1 is a chain and sprocket type mobile drive mechanism, which mainly drives the chain to move through the sprocket, and the chain drives the heat conduction component 2 to move. In this embodiment, the heat conduction component 2 is connected to the chain and can be a fixed connection. In this embodiment, the heat-conducting component 2 is made of a material that has both high heat resistance and high thermal conductivity. This is an optional arrangement made by those skilled in the art for the actual implementation situation. For example, it can be a nickel-based high-temperature alloy or austenitic stainless steel. A closed-loop conveyor system refers to a conveyor system with its ends connected, which is an optional setup that can be implemented by those skilled in the art with reference to existing technology.

[0040] It should be noted that the conveying device is mounted on the heat treatment furnace. During the heat treatment of workpiece 001, workpiece 001 is placed on the heat-conducting component 2. Several heat-conducting components 2 form a closed loop under the driving action of the moving drive mechanism 1, thereby realizing the conveying of workpiece 001 placed on the heat-conducting component 2. During this period, the heat-conducting components 2 on the conveying device are not entirely located inside the furnace body; the conveying device is at least divided into a heat treatment zone, a discharge zone, an injection zone, and a preheating zone, such as... Figure 9 The structure shown is in its current state. In the heat treatment zone, the interior of the heat-conducting component 2 is filled with a heat-conducting medium, which exchanges heat in the heat treatment zone and has a large amount of heat. When the heat-conducting component 2 moves from the heat treatment area to the discharge area, the location in the discharge area means that the heat-conducting component 2 has moved from the inside of the heat treatment furnace to the outside. At this time, in order to maximize the utilization of the heat on the heat-conducting component 2, the heat-conducting medium in the heat-conducting component 2 in the discharge area is discharged. At the same time, the heat-conducting component 2 located in the injection area receives the discharged heat-conducting medium, thereby realizing the heat conversion on the heat-conducting component 2. In this closed-loop conveying device, the heat-conducting component 2 in the injection zone has a certain amount of basic heat after the heat-conducting medium is injected. Theoretically, the stroke segment between the subsequent movement of the heat-conducting component 2 and the stroke segment after it enters the furnace body is the preheating segment. Workpiece 001 can be fed in the preheating zone, or it can be fed between the preheating zone and the discharge zone. This is an optional setup for actual implementation by those skilled in the art. In this embodiment, workpiece 001 is fed in the preheating zone as an example. After the workpiece 001 is transported to the preheating area from the outside, the heat-conducting component 2 located in the preheating area has a certain amount of basic heat. Based on this basic heat, the heat-conducting component 2 and the workpiece 001 in contact with it form a heat exchange, thereby achieving the preheating treatment of the workpiece 001. After being preheated in the preheating zone, workpiece 001 is moved to the heat treatment zone for heat treatment. In this embodiment, the above-described example process constitutes a complete heat treatment process for workpiece 001, and the conveying device operates cyclically based on this heat treatment process.

[0041] It is worth mentioning that the heat-conducting component 2 serves as a support belt for conveying workpiece 001, and is filled with a heat-conducting medium. When the heat-conducting component 2 carrying the heat-conducting medium moves from the heat treatment zone to the discharge zone, the heat-conducting medium inside the heat-conducting component 2 is transferred to the interior of the heat-conducting component 2 located in the injection zone. The injection zone serves as the pre-process area before the preheating zone. After the heat-conducting component 2 is injected with a heat-conducting medium with a certain amount of heat, the workpiece 001 is preheated in the preheating zone. Through this process, the heat energy from the heat treatment process of workpiece 001 can be used to preheat workpiece 001 without being transferred through multiple media, realizing direct recovery of waste heat and closed-loop heat energy. Since the external energy input is greatly reduced, it helps to reduce carbon emissions and is in line with the industrial development concept of green manufacturing.

[0042] In this embodiment, the heat transfer medium can be a fluid, such as heat transfer oil in an implementation environment of 350°C, or molten salt in an implementation environment above 350°C. Or it could be small solid particles, such as solid particles for fluidized beds; Provided that conditions permit, it can be a gas, for example, the exhaust gas in the heat treatment furnace can be directly connected to the heat-conducting component 2 located in the injection area; This is an optional setup for actual implementation by those skilled in the art, and will not be described in detail in this embodiment, nor is it intended to further limit the technical features of the present invention.

[0043] As a preferred embodiment, and as Figure 9 In the structural configuration shown, a cooling zone is provided between the discharge zone and the injection zone. The heat-conducting medium on the heat-conducting component 2 located in the discharge zone moves to the cooling zone after being emptied. The heat-conducting component 2 is cooled by a cooling device provided in the cooling zone. This cooling device can be any cooling device known and understood by those skilled in the art. Preferably, the residual heat on the heat-conducting component 2 after the heat-conducting medium is emptied can be recovered as waste heat. For example, a cooling device with a heat exchanger recovery system can be used. In this embodiment, no further details are provided, nor is it intended to further limit the technical features of the present invention.

[0044]

Example 2

[0045] In this embodiment, the axial distance between the flow channel 213 and the cylinder 21 is greater than the maximum outer diameter of the chamber 212, which means that, under the cross-sectional condition of the cylinder 21, the perpendicular distance between the flow channel 213 and the axis of the cylinder 21 is greater than the maximum outer diameter of the chamber 212. In this embodiment, the rotation drive mechanism 3 can be any rotation drive component that is well known and understood by those skilled in the art, such as a motor or a motor reducer, capable of driving the cylinder 21 to rotate.

[0046] As a preferred embodiment, in order to allow the heat-conducting medium in the chamber 212 to be discharged more smoothly, the inner wall of the chamber 212 may be provided with a ceramic coating, or an inclined surface may be provided to satisfy the physical law of liquid flowing to the lowest point.

[0047] Furthermore, such as Figure 5 , Figure 6 As shown, a heat-conducting component 2 in a heat treatment conveying device integrating temperature compensation and waste heat recovery uses a cylinder 21. The cylinder 21 has a connected chamber 212 and a flow channel 213. The axial distance between the flow channel 213 and the cylinder 21 is greater than the maximum outer diameter of the chamber 212. When the cylinder 21 is not under rotational force, the flow channel 213 is in the highest position.

[0048] It should be noted that the present invention is a heat treatment conveying device that integrates temperature compensation and waste heat recovery. In this embodiment, the heat-conducting element 2 is set up, and the cylindrical tube 21 is used as the main body of the heat-conducting element 2. By filling the heat-conducting medium into the inner cavity 212 of the heat-conducting component 2, under the normal conveying operation state of the cylinder 21, that is, under the state where the cylinder 21 is not rotating and subjected to force, the flow channel 213 on the cylinder 21 is always facing upward and is in a higher position than the cavity 212. Based on this, the flow of the heat-conducting medium in the cavity 212 is restricted. In this embodiment, the upward orientation of the flow channel 213 on the cylinder 21 can be achieved by limiting the rotation of the cylinder 21 through an external limiting member. For example, a guide rod can be provided on the cylinder 21, and a guide rail that cooperates with the guide rod can be provided on its exterior. The guide rail is parallel to the movement trajectory of the cylinder 21 at most in the non-emission area. Thus, when the cylinder 21 moves in the non-emission area, the rotation of the cylinder 21 is limited by the guide rail. Alternatively, in this embodiment, a counterweight can be provided on the part of the cylinder 21 away from the flow channel 213. For example, this part and the flow channel 213 are distributed on both sides of the cylinder 21 radially based on the axis of the cylinder 21. In this way, when the cylinder 21 is not rotating under force, the counterweight on the cylinder 21 is always vertically downward, so that the flow channel 213 on the cylinder 21 is always in a higher position than the chamber 212. When the heat-conducting component 2 moves to the discharge area, if it is necessary to drain the heat-conducting medium inside the heat-conducting component 2, the cylinder 21 is rotated by the external rotation drive mechanism 3 until the flow channel 213 on the cylinder 21 is at a lower position than the chamber 212. Based on this, the heat-conducting medium flows out by itself through the flow channel 213 under its own weight and atmospheric pressure.

[0049] As a preferred embodiment, such as Figure 5 As shown, the cylinder 21 includes a lightweight cylinder 211 and a heavy cylinder 2111 that is fitted with the lightweight cylinder 211. The flow channel 213 is opened on the lightweight cylinder 211. In this embodiment, taking the lightweight cylinder 211 and the heavy cylinder 2111 as having the same volume as an example, the lightweight cylinder 211 has a lower density and the heavy cylinder 2111 has a higher density. Thus, when the cylinder 21 is not under rotational force, the heavy cylinder 2111 is always located at the bottom due to its own weight, so that the flow channel 213 on the lightweight cylinder 211 always faces upward. For example, austenitic chromium-nickel stainless steel is used as the lightweight cylinder 211 and a nickel-based alloy is used as the heavy cylinder 2111.

[0050] As a preferred embodiment, such as Figure 1 , Figure 2 As shown, in this embodiment, the rotation drive mechanism 3 is a rack, and a gear 23 that meshes with the rack is fixedly connected to the cylinder 21. The rack is set on the moving path of the cylinder 21. By integrating the rotation control of the cylinder 21 into the movement control of the cylinder 21, the overall control mechanism of the conveying device is made simpler.

[0051] Specifically, such as Figure 8 As shown, a heat treatment conveying device integrating temperature compensation and waste heat recovery is provided with a slide 4 in cooperation with the movable seat 22. The slide 4 is used to guide the movement of the movable seat 22.

[0052] Furthermore, the connecting member 42 is connected to the slide rail 4, and a flow channel 3 41 is provided on the slide rail 4 to communicate with the connecting member 42. The flow channel 3 41 can communicate with the flow channel 1 222 on the movable seat 22.

[0053] Among them, slide 4 is fixed to the outside and cannot be moved; In this embodiment, the connecting member 42 is a high-temperature resistant metal tube.

[0054] It should be noted that the present invention is a heat treatment conveying device that integrates temperature compensation and waste heat recovery. In the embodiment, the slide 4 is used to guide the movement of the moving seat 22. Furthermore, a flow channel 3 41 is provided in the discharge area of ​​the slide 4, and the flow channel 3 41 in the injection area is connected through the flow channel 3 41 and the connecting member 42 connected to the flow channel 3 41. In this embodiment, the overall area distribution of the conveying device is as follows: Figure 9 The structure shown is an example with a liquid as the heat transfer medium: Because the flow channel 213 on cylinder 21 is set to always face upwards, in such a way... Figure 9In the structural state shown, when the cylinder 21 in the discharge area discharges the heat transfer medium, the flow channel 213 on the cylinder 21 in the lower half of the conveying device always faces upward to form a docking state. This makes the conveying mechanism of the cylinder 21 synchronized with the mechanism of conveying the heat transfer medium inside the cylinder 21. That is, the conveying of the heat transfer medium is from a higher position to a lower position naturally. In an ideal state, the transfer of the heat transfer medium can be achieved without external driving intervention. During the process of the heat-conducting component 2 moving to the discharge area to rotate and discharge the heat-conducting medium, the liquid, which is the heat-conducting medium, flows out through the second flow channel 213 on the cylinder 21 located in the discharge area to the corresponding third flow channel 41 on the slide 4. Then, the liquid flows through the third flow channel 41 to the third flow channel 41 located in the injection area on the slide 4 via the connecting member 42. After that, the liquid flows from the third flow channel 41 located in the injection area into the interior of the cylinder 21, which is connected to it at this time, thereby transferring the heat carried by the cylinder 21.

[0055] As a preferred embodiment, in this example, since there is a need for the heat-conducting component 2 to rotate, a cylindrical tube 21 is used as the main body of the heat-conducting component 2. Based on this: The gap between cylinders 21 can be adjusted to ensure that the gap just supports the workpiece 001. For example, when workpiece 001 is a bolt, such as Figure 10 The structure shown is such that the bolts are supported in an orderly manner by the cylinder 21. Compared with the conveying method of directly placing the bolts on the mesh belt, the bolts can be conveyed in an orderly manner. The position of the heating source in the heat treatment furnace can be reasonably set up based on the position of the bolts, so that the heat distribution of the bolts is more uniform and efficient. Since the cylinder 21 is in the shape of a drum, when the workpiece 001 to be heat-treated is a small workpiece 001 such as a bolt, a movable baffle 5 can be installed outside the conveying device, for example, on the heat treatment furnace body. When the baffle 5 is engaged with the cylinder 21, it forms a basic seal for the heat treatment environment of the furnace. On this basis, atmosphere heat treatment can be used, which is suitable for small workpieces 001 such as high-strength bolts and bolts with special implementation environment requirements. Furthermore, during the movement and conveying of bolts by the cylinder 21, by reasonably controlling the distance between the baffle 5 and the cylinder 21, the baffle 5 can provide a limiting effect on the bolts. For example, Figure 10 As shown in the structural state, by setting this limiting distance, during the process of conveying the bolts driven by the cylinder 21, the bolts placed horizontally between the two cylinders 21 cannot pass through the limiting distance and are restricted outside the baffle 5 during the conveying process.

[0056] As a preferred embodiment, such as Figure 9In the structural configuration shown, for workpieces such as bolts 001, the bolt loading area can be located in the inter-regional area between the cooling and injection zones. During the inter-regional movement of the heat-conducting component 2 from the cooling zone to the injection zone, i.e., during this stroke, the interior of the cylinder 21 is not filled with a heat-conducting medium. Therefore, in this structural configuration, the cylinder 21 can be rotated. During the rotation of the two cylinders 21, the bolt during the loading process is continuously disturbed until the bolt slides between the two cylinders 21, forming a structure as shown. Figure 10 The structure shown is in the indicated state.

[0057] It is worth mentioning that in this embodiment, the orderly feeding of bolts is achieved by using a cylindrical tube 21 and rotating the tube 21. Under the premise of achieving orderly feeding of bolts, an additional feeding control mechanism can be eliminated, resulting in higher integration and lower cost.

[0058]

Example 3

[0059] It should be noted that this invention is a heat treatment conveying device integrating temperature compensation and waste heat recovery. In this embodiment, through the configured cylinder 21 and movable seat 22, as shown... Figure 9 In the structural state shown, taking the movable seat 22 located in the heat treatment area as an example, the position of the flow channel 222 on the upper part of the conveying device of the movable seat 22 is downward, while the position of the flow channel 213 on the corresponding cylinder 21 is upward. Thus, the flow channel 222 and the flow channel 213 are misaligned, forming a sealing effect. When the cylinder 21 and its corresponding movable seat 22 move to the discharge area, the cylinder 21 rotates under the rotation of the external rotation drive mechanism 3 until the flow channel 213 on the cylinder 21 faces downward. At this time, the flow channel 213 on the cylinder 21 and the flow channel 222 on the movable seat 22 are connected to achieve the outflow of the heat-conducting liquid in the cylinder 21 located in the discharge area. The movable seat 22, located in the lower half of the conveying device, rotates 180° after being guided by the slide 4. That is, the flow channel 222 of the movable seat 22, which was facing downwards, changes to facing upwards in the lower half of the conveying device. At the same time, since the flow channel 213 on the cylinder 21 is always facing upwards when it is not under rotational force, the flow channel 213 on the cylinder 21 and the flow channel 222 on the movable seat 22 are always connected in the lower half of the conveying device to receive the heat-conducting medium discharged from the cylinder 21 located in the discharge area.

[0060] It is worth mentioning that the sealing mechanism, which is not dependent on deformation and consists of plug 214, flow channel 213, and guide section 223, is more suitable for high-temperature operating environments, and has a higher degree of automation, simpler structure, and is more conducive to later operation and maintenance.

[0061] As a preferred embodiment, and as Figure 5 , 6 As shown, a cylinder 21 for a heat treatment conveying device integrating temperature compensation and waste heat recovery has a plug 214 movably provided on the flow channel 213. The plug 214 fits the structure of the flow channel 213 and is used to control the flow state between the flow channel 213 and the chamber 212.

[0062] For example Figure 3 , 4 As shown, a movable seat 22 for a heat treatment conveying device integrating temperature compensation and waste heat recovery has a guide portion 223 on a slide 221. The guide portion 223 is a spiral with equal diameter, and a plug 214 is inserted into the guide portion 223 for sliding connection. The plug 214 and the guide portion 223 are configured such that the change in the circumferential position of the plug 214 in the guide portion 223 corresponds to the change in the position of the plug 214 inside the flow channel 213.

[0063] Among them, the guide part 223 is a full circle, for example, it is formed by two sets of mutually symmetrical half-circle spirals connected together. In this way, one half-circle spiral is used to change the connection state of the flow channel 213. When the cylinder 21 is continuously rotated until the plug 214 moves to the other half-circle spiral, the change in the connection state of the flow channel 213 is reset.

[0064] It should be noted that, in order to further ensure the airtightness of the cylinder 21 under non-rotational stress, in this embodiment, a plug 214 is provided inside the flow channel 213, and the communication between the cylinder 21 and the outside is controlled by controlling the position of the plug 214 in the flow channel 213. like Figure 7 In the structural state shown, when the flow channel 222 on the movable seat 22 and the flow channel 213 on the cylinder 21 are not connected, the plug 214 is located in a relatively inner position on the flow channel 213. In this position, the cylinder 21 is not connected to the outside based on the plug 214. Then, when the cylinder 21 is rotated, the movable seat 22 is restricted to its external environment. For example, in this embodiment, it is restricted to the slide 4. The movable seat 22 cannot rotate. During the rotation of the cylinder 21, it rotates relative to the movable seat 22. At the same time, as the cylinder 21 rotates, the plug 214 is subjected to the guide portion 223 on the slide 221. The guide portion 223 is specifically a spiral with equal diameter. As the circumferential position of the plug 214 in the guide portion 223 continues to change, the axial position of the plug 214 in the guide portion 223 continues to change. That is, as the cylinder 21 rotates, the plug 214 moves synchronously inside the flow channel 213. When the cylinder 21 rotates to the point where the second flow channel 213 is connected to the first flow channel 222 on the movable seat 22, the plug 214 no longer blocks the second flow channel 213, thus allowing the cylinder 21 to be connected to its outside.

[0065] As a preferred embodiment, such as Figure 6 As shown, a ball head 2141 is provided on the part of the plug 214 that connects with the guide part 223. The plug 214 and the guide part 223 are slidably connected through the ball head 2141. The connection between the ball head 2141 and the guide part 223 reduces the contact friction between them and ensures the smooth movement of the plug 214.

[0066] As a preferred embodiment, such as Figure 4 , Figure 6 As shown, a sealing groove 224 is provided on the movable seat 22, and a sealing ring 2112 that cooperates with the sealing groove 224 is provided on the cylinder 21, so as to further suppress the possibility of leakage of heat-conducting medium inside the cylinder 21.

[0067] As mentioned above, in this invention, components such as cylinder 21, plug 214, and gear 23, which need to operate inside a heat treatment furnace, should be made of high-temperature resistant alloys, as those skilled in the art will understand. This is an optional arrangement made by those skilled in the art for actual implementation, and is not intended to further limit the technical features of this invention.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A heat treatment conveying device integrating temperature compensation and waste heat recovery, comprising a moving drive mechanism (1), characterized in that: It also includes multiple heat-conducting components (2) connected to the mobile drive mechanism (1), and a heat-conducting medium. The heat-conducting components (2) are hollow structures. The conveying device is closed-loop and is divided into at least a heat treatment zone, a discharge zone, an injection zone and a preheating zone. The heat-conducting components (2) are configured to: move from the heat treatment zone to the discharge zone, move from the discharge zone to the injection zone, move from the injection zone to the preheating zone, move from the preheating zone to the heat treatment zone, carry the heat-conducting medium in the preheating zone and the heat treatment zone, discharge the carried heat-conducting medium in the discharge zone, and inject the discharged heat-conducting medium in the injection zone. The heat-conducting component (2) includes a cylinder (21), on which a connected chamber (212) and a flow channel (213) are provided. The axial distance between the flow channel (213) and the cylinder (21) is greater than the maximum outer diameter of the chamber (212). When the cylinder (21) is not under rotational force, the flow channel (213) is at its highest position. The conveying device also includes a rotation drive mechanism (3) for rotating the cylinder (21) in the discharge zone.

2. The heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 1, characterized in that: A movable seat (22) is rotatably connected to the part of the cylinder (21) adjacent to the second flow channel (213), and a slide (4) is fitted with the movable seat (22). The slide (4) is used to guide the movement of the movable seat (22). A first flow channel (222) is opened on the movable seat (22). At least in the injection area, the first flow channel (222) on the movable seat (22) faces upward, and at least in the discharge area, the first flow channel (222) on the movable seat (22) faces downward. In the injection area and the discharge area, the first flow channel (222) and the second flow channel (213) are connected.

3. The heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 2, characterized in that: When the heat-conducting medium is liquid, the position of the discharge zone is higher than the position of the injection zone, and a connecting member (42) is provided between the discharge zone and the injection zone for communication. Through the connecting member (42), the heat-conducting medium in the heat-conducting member (2) in the discharge zone flows to the heat-conducting member (2) in the injection zone.

4. The heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 3, characterized in that: The connecting member (42) is connected to the slide (4), and a flow channel three (41) is provided on the slide (4) to communicate with the connecting member (42). The flow channel three (41) can communicate with the flow channel one (222) on the movable seat (22).

5. The heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 1, characterized in that: A plug (214) is movably provided on the second flow channel (213). The plug (214) fits the structure of the second flow channel (213) and is used to control the flow state between the second flow channel (213) and the chamber (212).

6. The heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 5, characterized in that: A guide portion (223) is provided on the slide (221). The guide portion (223) is a spiral with equal diameter, and the plug (214) is inserted into the guide portion (223) for sliding connection. The plug (214) and the guide portion (223) are configured such that the change of the circumferential position of the plug (214) in the guide portion (223) corresponds to the change of the position of the plug (214) inside the flow channel (213).

7. The heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 1, characterized in that: The cylinder (21) includes a lightweight cylinder (211) and a heavy cylinder (2111) is fitted with the lightweight cylinder (2111). The flow channel two (213) is opened on the lightweight cylinder (211).

8. A heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 6, characterized in that: A ball head (2141) is provided at the part of the plug (214) that connects with the guide (223), and the plug (214) and the guide (223) are slidably connected through the ball head (2141).

9. A heat treatment conveying device integrating temperature compensation and waste heat recovery according to claim 1, characterized in that: The conveying device also includes a cooling zone, which is configured to be located in the sequential travel between the discharge zone and the injection zone, and to cool the heat-conducting element (2) when the heat-conducting element (2) moves to the cooling zone.

Images