Hub heat treatment device with controllable air-fuel ratio

Abstract

The utility model discloses a hub heat treatment device with a controllable air-fuel ratio. The hub heat treatment device comprises a heat treatment furnace, a combustion device, a material preparation frame and a feeding device, the heat treatment furnace comprises a furnace body, a first furnace door and a second furnace door; the material preparation frame is arranged in front of the furnace body, and a second conveying device capable of conveying backwards is arranged at the position, corresponding to each layer of conveying frame, on the material preparation frame; the feeding device is arranged in front of the material preparation frame, the combustion device comprises a combustion head, a gas pipe and an air pipe, the combustion head is arranged on the furnace body, one end of the combustion head extends into the furnace cavity, the gas pipe and the air pipe are both communicated with the combustion head, a first adjusting valve used for controlling gas flow is arranged on the gas pipe, and a second adjusting valve used for controlling air flow is arranged on the air pipe. According to the multi-layer conveying frame in the furnace chamber, a plurality of hubs can be continuously subjected to heat treatment. The ratio of air to fuel gas is controlled by adjusting the combustion devices at the corresponding positions in different positions in the furnace cavity to achieve efficient utilization of the fuel gas, the fuel gas utilization rate is high, and the whole heat treatment process is more energy-saving.

Description

TECHNICAL FIELD

[0001] The utility model relates to the wheel hub production field especially is a kind of air-fuel ratio controllable wheel hub heat treatment device. BACKGROUND

[0002] When aluminum cast wheel hub is produced, wheel hub blank is first cast and spinning processing and shaping are carried out to blank to form formed wheel hub, in order to improve the strength of wheel hub, remove stress generated in processing process, wheel hub needs to be heat treated. Generally, wheel hub is placed into heat treatment furnace, heated, kept warm, cooled and taken out, and the energy consumption of this kind of mode is high, and the time consumption is more. UTILITY MODEL CONTENTS

[0003] The utility model aims at overcoming above-mentioned insufficient, provide the efficiency high, energy consumption low air-fuel ratio controllable wheel hub heat treatment device.

[0004] To achieve the above object, the technical solution of the utility model is: a kind of air-fuel ratio controllable wheel hub heat treatment device, including heat treatment furnace, combustion device, standby rack, feeding device;

[0005] Heat treatment furnace includes furnace body, first furnace door, second furnace door;Furnace body is equipped with furnace cavity through furnace body front and back ends, furnace cavity is equipped with at least two layers of conveying frame, first conveying device that can be conveyed backwards is all equipped on each layer of conveying frame;First furnace door is located at the front end of furnace body, for opening and closing the front end of furnace cavity;Second furnace door is located at the rear end of furnace body, for opening and closing the rear end of furnace cavity;

[0006] Standby rack is located at the front of furnace body, second conveying device that can be conveyed backwards is all equipped on each layer of conveying frame corresponding position of standby rack;

[0007] Feeding device is located at the front of standby rack, and feeding device includes storage rack, base, lifting seat, lifting seat is movably arranged on base, lifting seat is equipped with the prong tooth that stretches out backwards on it, and third conveying device that can be conveyed backwards is equipped on prong tooth;Storage rack is located between base and standby rack, and prong tooth can be moved to align second conveying device position or drop to storage rack position with lifting seat;

[0008] Combustion device has several, and several combustion devices are arranged in front and back direction on heat treatment furnace, and combustion device includes combustion head, gas pipe and air pipe, combustion head is arranged on furnace body, one end of combustion head is inserted into furnace cavity, gas pipe and air pipe are all communicated with combustion head, first regulating valve for controlling gas flow is equipped on gas pipe, and second regulating valve for controlling air flow is equipped on air pipe.

[0009] The loading device loads the hub to be treated to a standby rack, the hub on the standby rack is sent into the furnace cavity from the first furnace door by the second conveying device, the hub is conveyed and moved in the furnace cavity by the first conveying device, and moves from the front end of the furnace cavity to the rear end of the furnace cavity, and the heat treatment is completed. The multi-layer conveying rack in the furnace cavity can enable multiple hubs to continuously complete heat treatment. The temperature required by different positions in the furnace cavity is different, the proportion of air and fuel gas can be controlled by adjusting the first adjusting valve and the second adjusting valve of the combustion device corresponding to the position, the air-fuel gas ratio is adjusted, the heat surplus caused by excessive fuel gas or the temperature caused by insufficient fuel gas is reduced, the combustion efficiency of the fuel gas is high, and the whole heat treatment is more energy-saving.

[0010] Preferably, the first conveying device comprises first roller shafts arranged in a row in the front-rear direction, the second conveying device comprises second roller shafts arranged in a row in the front-rear direction, and the third conveying device comprises a front roller, a rear roller and a conveying belt wound around the front roller and the rear roller.

[0011] Preferably, the combustion head comprises a cylinder, a bell mouth, a flame disc and inner pipes, one end of the cylinder is communicated with the air pipe, the bell mouth is arranged at the other end of the cylinder and expands outward, the flame disc is conical, and the thin end of the flame disc extends into the bell mouth; the inner pipes are annularly arranged in the cylinder, one end of the inner pipes is communicated with the fuel gas pipe, and the other end of the inner pipes extends into the gap between the bell mouth and the flame disc. The fuel gas enters the furnace cavity through the inner pipes, the air enters the furnace cavity through the cylinder, the flame disc can diffuse the flame of the fuel gas outward to form a short flame mode in a large range, and the furnace cavity can be rapidly heated without burning the hub in the furnace cavity.

[0012] Preferably, the combustion device further comprises a controller connected with the first adjusting valve and the second adjusting valve and used for controlling the flow of the first adjusting valve and the second adjusting valve. The first adjusting valve and the second adjusting valve are automatically adjusted by the controller.

[0013] Preferably, the combustion head further comprises an adjusting rod and an adjusting motor, the adjusting rod is movably arranged in the cylinder along the axial direction of the cylinder, the adjusting motor is arranged at one end of the adjusting rod and used for driving the adjusting rod to move, and the other end of the adjusting rod is connected with the flame disc. The adjusting motor drives the adjusting rod to move to adjust the gap between the flame disc and the bell mouth, thereby adjusting the size of the flame and adjusting the flame mode of the combustion head according to different air-fuel gas ratios.

[0014] By adopting the above technical scheme, the multi-layer conveying rack in the furnace cavity can enable multiple hubs to continuously complete heat treatment. The air-fuel gas ratio of the combustion device corresponding to different positions in the furnace cavity is adjusted to realize efficient utilization of fuel gas, the utilization rate of fuel gas is high, and the whole heat treatment is more energy-saving. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the utility model;

[0016] Figure 2 It is a structure schematic view of the utility model feeding device when feeding;

[0017] Figure 3 It is a structure schematic view of the utility model combustion head.

[0018] Main figure mark explanation:

[0019] Heat treatment furnace 1;Furnace body 11;Furnace cavity 12;First furnace door 13;Second furnace door 14;Conveying frame 15;First conveying device 151;Combustion device 2;Combustion head 21;Barrel 211;Flared mouth 212;Inner tube 213;Flame disc 214;Adjusting rod 215;Air pipe 22;Second regulating valve 221;Fuel gas pipe 23;First regulating valve 231;Controller 24;Air main pipe 3;Fuel gas main pipe 4;Material preparation frame 5;Second conveying device 51;Base 61;Lifting seat 62;Third conveying device 63;Storage rack 64. Specific implementation

[0020] The utility model is further illustrated below in combination with the drawings and specific embodiments.

[0021] As Figures 1-3 Indicated, the utility model discloses a wheel hub heat treatment device of controllable air-fuel ratio, including heat treatment furnace 1, combustion device 2, material preparation frame 5, feeding device.

[0022] Heat treatment furnace 1 includes furnace body 11, first furnace door 13, second furnace door 14;Furnace body 11 is equipped with furnace cavity 12 through furnace body 11 front and back two ends, and is equipped with three layers conveying frame 15 in furnace cavity 12.Each layer conveying frame 15 is equipped with the first conveying device 151 that can be conveyed to back on;First conveying frame 15 is the first roller shaft arranged in front and back rows. First furnace door 13 is located at the front end of furnace body 11, is used to open and close the front end of furnace cavity 12, and the front end of furnace body is equipped with vertical first guide rail, and first furnace door 13 can be moved up and down and is arranged on first guide rail. Second furnace door 14 is located at the rear end of furnace body, is used to open and close the rear end of furnace cavity 12. The rear end of furnace body is equipped with vertical second guide rail, and second furnace door can be moved up and down and is arranged on second guide rail.

[0023] As Figure 2 Indicated, material preparation frame 5 can be moved forward and backward and is located at the front of furnace body, and is equipped with the second conveying device 51 that can be conveyed to back on every layer conveying frame corresponding position on material preparation frame 5. Second conveying device is the second roller shaft arranged in front and back direction.

[0024] As Figure 2As shown, the feeding device is arranged in front of the standby rack 5, and the feeding device comprises a storage rack 64, a base 61, and a lifting seat 62. The lifting seat 62 is arranged on the base 61 and can move up and down, and the lifting seat 62 is provided with a fork tooth extending rearward, and the fork tooth is provided with a third conveying device 63 for rearward conveying. The third conveying device comprises front rollers, rear rollers, and a conveying belt wound around the front rollers and the rear rollers. The storage rack 64 is arranged between the base and the standby rack 5, and the fork tooth can be lifted by the lifting seat to align the third conveying device with the second conveying device, or the fork tooth can be lowered to the position of the storage rack. The lifting seat 62 is lowered to lower the fork tooth to the storage rack 64, and the hub is conveyed to the fabric rack. The lifting seat 62 is raised to align the third conveying device 63 with the second conveying device 51, and the third conveying device 63 conveys the hub rearward to convey the hub to the second conveying device. The second conveying device conveys the hub rearward to the first conveying device in the furnace cavity.

[0025] As shown in Figure 1 The combustion device 2 comprises a combustion head 21, a gas pipe 23, an air pipe 22, a controller 24, an adjusting rod 215, and an adjusting motor. The combustion head 21 is arranged on the furnace body 11, one end of the combustion head 21 extends into the furnace cavity 12, the gas pipe 23 and the air pipe 22 are both connected to the combustion head 21, the gas pipe 23 is provided with a first adjusting valve 231 for controlling the flow of gas, and the air pipe 22 is provided with a second adjusting valve 221 for controlling the flow of air. The air pipes 22 of all the combustion devices are connected to the air main pipe 3, and the gas pipes of all the combustion devices are connected to the gas main pipe 4. The controller 24 is connected to the first adjusting valve 231 and the second adjusting valve 221 to control the flow of the first adjusting valve and the second adjusting valve. The flow of the first adjusting valve and the second adjusting valve can be manually adjusted or adjusted by the controller, so that the flow of gas and air of the combustion devices at different positions of the furnace body is different, which is suitable for different needs at different positions of the furnace body.

[0026] As shown in Figure 3As shown, the combustion head 21 comprises a cylinder 211, a bell mouth 212, a flame disc 214, and inner tubes 213. One end of the cylinder 211 is communicated with the air pipe 22, the bell mouth 212 is arranged at the other end of the cylinder 211 and expands outward, the flame disc 214 is conical, and the thin end of the flame disc 214 extends into the bell mouth; the inner tubes 213 are multiple, and the multiple inner tubes are arranged in a ring shape in the cylinder, one end of the inner tube 214 is communicated with the gas pipe, and the other end of the inner tube extends into the gap between the bell mouth 212 and the flame disc 214. The adjusting rod 215 is arranged in the cylinder and can move along the axial direction of the cylinder, the adjusting motor is arranged and connected with one end of the adjusting rod for driving the adjusting rod to move, and the other end of the adjusting rod is connected with the combustion disc. The adjusting motor drives the adjusting rod to move, so that the gap between the combustion disc and the bell mouth is adjusted, the size of the flame is adjusted, different gas and air ratios are matched, and the flame shape of the combustion head is adjusted.

[0027] The loading device loads the hub to be treated to the standby rack 5, the hub on the standby rack 5 is sent into the furnace cavity 12 from the first furnace door 13 through the second conveying device 51, the hub is conveyed and moved in the furnace cavity 12 by the first conveying device 151 in the furnace cavity 12, and the hub is moved from the front end of the furnace cavity to the rear end of the furnace cavity, so that the heat treatment is completed. The proportion of air and gas in different positions in the furnace cavity 12 is controlled by adjusting the first adjusting valve 231 and the second adjusting valve 221 of the combustion device corresponding to the position, the combustion head with a large range and short flame is matched, the combustion of the gas is efficiently used, and the whole heat treatment is more energy-saving.

[0028] The above is only a preferred embodiment of the present application, and cannot limit the scope of the present application. Any change and decoration within the scope of the present application should still belong to the scope of the present application.

Claims

1. A wheel hub heat treatment device with controllable air-fuel ratio, characterized in that, The application relates to a heat treatment furnace, a combustion device, a standby material rack and a feeding device. The heat treatment furnace comprises a furnace body, a first furnace door and a second furnace door; a furnace cavity is arranged in the furnace body and penetrates through the front and back ends of the furnace body; at least two layers of conveying racks are arranged in the furnace cavity; a first conveying device capable of conveying backward is arranged on each conveying rack; the first furnace door is arranged at the front end of the furnace body and is used for opening and closing the front end of the furnace cavity; and the second furnace door is arranged at the back end of the furnace body and is used for opening and closing the back end of the furnace cavity. The standby material rack is arranged in front of the furnace body; a second conveying device capable of conveying backward is arranged on the standby material rack at the position corresponding to each conveying rack. The feeding device is arranged in front of the standby material rack; the feeding device comprises a storage rack, a base and a lifting seat; the lifting seat is movably arranged on the base; a fork tooth extending backward is arranged on the lifting seat; a third conveying device capable of conveying backward is arranged on the fork tooth; the storage rack is arranged between the base and the standby material rack; the fork tooth can be moved to align with the position of the second conveying device or to be lowered to the position of the storage rack. The combustion device comprises a combustion head, a gas pipe and an air pipe; the combustion head is arranged on the furnace body and extends into the furnace cavity; the gas pipe and the air pipe are connected with the combustion head; a first adjusting valve for controlling the flow of gas is arranged on the gas pipe; and a second adjusting valve for controlling the flow of air is arranged on the air pipe.

2. The air-fuel ratio controllable wheel heat treatment device according to claim 1, characterized by The first conveying device comprises first roller shafts arranged in a row in the front-back direction; the second conveying device comprises second roller shafts arranged in a row in the front-back direction; and the third conveying device comprises front rollers, rear rollers and a conveying belt wound around the front rollers and the rear rollers.

3. The air-fuel ratio controllable wheel heat treatment device according to claim 1, characterized by The combustion head comprises a cylinder, a horn, a flame disc and inner pipes; one end of the cylinder is connected with the air pipe; the horn is arranged at the other end of the cylinder and expands outward; the flame disc is conical; and the thin end of the flame disc extends into the horn; a plurality of inner pipes are arranged in a ring shape in the cylinder; one end of the inner pipes is connected with the gas pipe; and the other end of the inner pipes extends into the gap between the horn and the flame disc.

4. The air-fuel ratio controllable wheel heat treatment device according to claim 1, characterized by The combustion device further comprises a controller connected with the first adjusting valve and the second adjusting valve and used for controlling the flow of the first adjusting valve and the second adjusting valve.

5. The air-fuel ratio controllable wheel heat treatment device according to claim 3, characterized by The combustion head further comprises an adjusting rod and an adjusting motor; the adjusting rod is movably arranged in the cylinder along the axial direction of the cylinder; the adjusting motor is arranged at one end of the adjusting rod and is connected with the adjusting rod for driving the adjusting rod to move; and the other end of the adjusting rod is connected with the combustion disc.

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