Heating furnace suitable for production of plating-free plate

Abstract

The utility model relates to the technical field of heating furnaces, and discloses a heating furnace suitable for production of a plating-free plate, which comprises an adsorption type dryer, a nitrogen storage tank and a heating furnace body, the nitrogen storage tank is communicated with the adsorption type dryer, the heating furnace body is communicated with the adsorption type dryer, the outside of the nitrogen storage tank is communicated with a switch valve, and the switch valve is communicated with the nitrogen storage tank. The top of the nitrogen storage tank communicates with a flowmeter, the right side of the nitrogen storage tank communicates with a pressure gauge, the bottom of the right side of the nitrogen storage tank communicates with a pressure reducing valve, the top of the heating furnace body is provided with an oxygen content measuring instrument, and the right side of the top of the heating furnace body is provided with a dew point measuring instrument. According to the heating furnace suitable for production of the plating-free plate, the additionally-arranged exhaust mechanism can drive the spray head and the fan blades to rotate when nitrogen is exhausted, then the interior of the heating furnace body can be rapidly filled with the nitrogen under the condition that the flowing speed of the nitrogen is greatly increased, and the production and machining speed of the plating-free plate is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heating furnace, specifically to a heating furnace suitable for non-coated plate production. BACKGROUND

[0002] Non-coated steel plate has low cost and good welding performance, but oxide is generated during heating in the heating furnace and needs protective gas, and the part needs to be shot blasted after forming, and the part is prone to rust during storage and has poor corrosion resistance.

[0003] 1. The non-coated steel plate is cheaper, and the annual maintenance cost is low. It meets the customer's demand for cost reduction, and the production cost is reduced by 26%.

[0004] 2. It also expands the range of material selection and is not limited by the coating;

[0005] 3. The pure nitrogen atmosphere has no effect on the dew point, and there are no restrictions for seamless production;

[0006] 4. The new nitrogen gas storage tank has low transformation cost, short cycle and small occupied area;

[0007] 5. The mold mixed arrangement design, electric heating furnace bare plate and plated plate co-linear production are realized, carbon emission is reduced, and green production is realized.

[0008] Hot stamping plated steel plate can be divided into aluminum-silicon (Al-10Si) plating, electroplated zinc-nickel (Zn-10Si) plating, hot-dipped pure zinc (GI) layer and alloy zinc-iron (GA) plating. Compared with non-coated plate, the disadvantages are: the cost of hot stamping plated steel plate for automobile cover parts is high; when the plate is heated to a certain temperature, the plating layer is easy to bond with the ceramic roller of the heating furnace, and the ceramic roller needs to be replaced regularly, and the annual maintenance cost is high. The advantages are:

[0009] 1. The heating furnace does not need protective gas during production;

[0010] 2. The hot stamping part does not produce oxide skin during heating and stamping, and does not need shot blasting, which has no effect on the mold and reduces the process and production equipment;

[0011] The part does not rust during storage, and has good corrosion resistance.

[0012] The existing heating furnace cannot perform mixed processing when processing two different layers, so multiple heating furnaces are needed when different layers are needed, causing economic waste, and some factory parks have no natural gas connection, resulting in high investment in natural gas pipeline. UTILITY MODEL CONTENTS

[0013] (I) Technical problems solved

[0014] In view of the defects of the prior art, the utility model provides a heating furnace suitable for non-plated layer board production to solve the above problems that the two different layer boards cannot be mixed processed, and then the different layer boards need to use multiple heating furnaces, which causes economic waste, and the natural gas cannot be connected in some factory parks, which causes the technical problem of high cost of natural gas pipeline investment.

[0015] (II) Technical scheme

[0016] To achieve the above object, the utility model provides the following technical scheme: a heating furnace suitable for non-plated layer board production, including: adsorption dryer, nitrogen storage tank and heating furnace body, the nitrogen storage tank is linked with adsorption dryer, the heating furnace body is linked with adsorption dryer, the outside of nitrogen storage tank is connected with switch valve, the top of nitrogen storage tank is connected with flow meter, the right side of nitrogen storage tank is connected with pressure gauge, the right side bottom of nitrogen storage tank is connected with pressure reducing valve, the top of heating furnace body is equipped with oxygen content measuring instrument, the right side of heating furnace body top is equipped with dew point measuring instrument, the inside of heating furnace body is equipped with exhaust mechanism.

[0017] The exhaust mechanism includes a hollow disc, the left side of the hollow disc is connected with an air inlet, and the air inlet is connected with the adsorption dryer through a pipeline, the inside of the hollow disc is equipped with an impeller, and the front of the impeller is connected with a first conical gear through a short shaft, the right side of the hollow disc is connected with a bend pipe through a bearing, the outside of the bend pipe is connected with a spray head, the outside of the bend pipe is sleeved with a second conical gear, and the second conical gear is engaged with the first conical gear.

[0018] Preferably, the hollow disc is connected with the inside of the heating furnace body through a rack, and a sealed bearing is connected between the hollow disc and the short shaft, which can improve the air tightness of the hollow disc.

[0019] Preferably, the outside of the bend pipe is uniformly provided with a fan blade, and the outside of the fan blade is equipped with a reinforcing rib, and the fan blade can improve the running speed of the airflow by rotating.

[0020] Preferably, the inside of the heating furnace body is equipped with a sealing mechanism, which can seal and isolate the inner wall of the heating furnace body and protect the exhaust mechanism.

[0021] Preferably, the sealing mechanism includes a sealing plate and an outer plate, the outer plate is connected with the inner wall of the heating furnace body, the sealing plate is connected with the inner wall of the heating furnace body through a connecting frame, a rotating plate is connected between the sealing plate and the outer plate, the inside of the rotating plate is connected with the sealing plate and the outer plate through spherical bearings respectively, the rotating plate is connected with the bend pipe, and the rotating plate can rotate between the sealing plate and the outer plate through the spherical bearings, thereby protecting the bend pipe.

[0022] Preferably, the two sides of the sealing plate are equipped with pneumatic doors, which are controlled by an external controller, so that the sealing plate can be closed to prevent the exhaust mechanism from discharging nitrogen into the heating furnace body while facilitating the movement of the fan blades.

[0023] (Three) beneficial effects

[0024] Compared with the prior art, the utility model provides a heating furnace suitable for non-plated layer plate production, which has the following beneficial effects:

[0025] 1. The heating furnace suitable for non-plated layer plate production can quickly switch between different layer plate production modes through the added adsorption dryer and nitrogen storage tank, avoiding the problem that traditional devices can only produce one type of layer plate, and through the nitrogen storage tank, the oxygen in the heating furnace body can be discharged without mixing nitrogen and natural gas, thereby avoiding the problem of high cost of natural gas pipeline caused by the lack of natural gas connection point near the industrial park.

[0026] 2. The heating furnace suitable for non-plated layer plate production, when the adsorption dryer discharges nitrogen in the nitrogen storage tank into the heating furnace body, the added exhaust mechanism can drive the spray head and fan to rotate when the nitrogen is discharged, thereby greatly improving the flow speed of the nitrogen and enabling the nitrogen to quickly fill the inside of the heating furnace body, thereby improving the production and processing speed of the layer plate. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a front view of the utility model;

[0028] Figure 2 It is a cross-sectional view of the heating furnace body of the utility model;

[0029] Figure 3 It is an external view of the exhaust mechanism of the utility model;

[0030] Figure 4 It is a back view of the exhaust mechanism of the utility model;

[0031] Figure 5 It is an external view of the sealing mechanism of the utility model.

[0032] In the diagram: 1. Adsorption dryer; 2. Nitrogen storage tank; 21. Switch valve; 22. Flow meter; 23. Pressure gauge; 24. Pressure reducing valve; 3. Heating furnace body; 31. Dew point meter; 32. Oxygen content meter; 4. Sealing mechanism; 41. Sealing plate; 42. Rotating plate; 43. Spherical bearing; 44. Outer plate; 45. Connecting frame; 46. Pneumatic door; 5. Exhaust mechanism; 51. Hollow disc; 52. Air inlet; 53. Impeller; 54. First conical tooth; 55. Second conical tooth; 56. Bend; 57. Fan blade; 58. Nozzle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] This utility model provides a technical solution, please refer to Figure 1 and Figure 2 A heating furnace suitable for the production of uncoated plates includes: an adsorption dryer 1, a nitrogen storage tank 2, and a heating furnace body 3. The nitrogen storage tank 2 is connected to the adsorption dryer 1, and the heating furnace body 3 is also connected to the adsorption dryer 1. An on / off valve 21 is connected to the outside of the nitrogen storage tank 2. A flow meter 22 is connected to the top of the nitrogen storage tank 2. A pressure gauge 23 is connected to the right side of the nitrogen storage tank 2. A pressure reducing valve 24 is connected to the bottom right side of the nitrogen storage tank 2. An oxygen content measuring instrument 32 is installed on the top of the heating furnace body 3. A dew point measuring instrument 31 is installed on the right side of the top of the heating furnace body 3. An exhaust mechanism 5 is installed inside the heating furnace body 3.

[0035] The two ends of the adsorption dryer 1 are connected to the nitrogen storage tank 2 and the heating furnace body 3, respectively. The adsorption dryer 1 can discharge the nitrogen inside the nitrogen storage tank 2 into the heating furnace body 3. The nitrogen storage tank 2 is used to store nitrogen. The switch valve 21 is used to control the opening and closing of the nitrogen storage tank 2. The flow meter 22 is used to display the flow rate inside the nitrogen storage tank 2. The pressure gauge 23 is used to display the pressure inside the nitrogen storage tank 2. The pressure reducing valve 24 is used to prevent the pressure inside the nitrogen storage tank 2 from being too high. The heating furnace body 3 is used to process the shelves. The dew point meter 31 is used to measure the dew point temperature. The oxygen content meter 32 is used to test the oxygen content inside the heating furnace body 3.

[0036] Please see Figure 3 , Figure 4 and Figure 5The exhaust mechanism 5 comprises a hollow disc 51, the left side of the hollow disc 51 is communicated with an air inlet 52, the air inlet 52 is communicated with the adsorption dryer 1 through a pipeline, the inside of the hollow disc 51 is equipped with an impeller 53, the front side of the impeller 53 is connected with a first conical gear 54 through a short shaft, the right side of the hollow disc 51 is communicated with a bend pipe 56 through a bearing, the outside of the bend pipe 56 is communicated with a nozzle 58, the outside of the bend pipe 56 is sleeved with a second conical gear 55, and the second conical gear 55 is engaged with the first conical gear 54.

[0037] The hollow disc 51 facilitates the flow of nitrogen, the air inlet 52 facilitates the entry of nitrogen into the inside of the hollow disc 51, the impeller 53 can be driven to rotate by the flowing nitrogen, the first conical gear 54 can drive the second conical gear 55 and the bend pipe 56, and the bend pipe 56 and the nozzle 58 can exhaust the nitrogen into the inside of the heating furnace body 3.

[0038] The hollow disc 51 is connected with the inside of the heating furnace body 3 through a bracket, a sealing bearing is connected between the hollow disc 51 and the short shaft, the sealing bearing can improve the air tightness of the hollow disc 51, the outside of the bend pipe 56 is uniformly provided with a fan blade 57, the outside of the fan blade 57 is equipped with a reinforcing rib, and the fan blade 57 can improve the running speed of the airflow by rotating.

[0039] The inside of the heating furnace body 3 is equipped with a sealing mechanism 4, the sealing mechanism 4 can seal and isolate the inner wall of the heating furnace body 3, and protect the exhaust mechanism 5, the sealing mechanism 4 comprises a sealing plate 41 and an outer plate 44, the outer plate 44 is connected with the inner wall of the heating furnace body 3, the sealing plate 41 is connected with the inner wall of the heating furnace body 3 through a connecting frame 45, a rotating plate 42 is connected between the sealing plate 41 and the outer plate 44, the inside of the rotating plate 42 is connected with the sealing plate 41 and the outer plate 44 through spherical bearings 43 respectively, the rotating plate 42 is connected with the bend pipe 56, the rotating plate 42 can rotate between the sealing plate 41 and the outer plate 44 through the spherical bearings 43, thereby protecting the bend pipe 56.

[0040] The two sides of the sealing plate 41 are both equipped with pneumatic doors 46, the pneumatic doors 46 are controlled by an external controller, so that the sealing plate 41 can be sealed, thereby avoiding that the exhaust mechanism 5 exhausts nitrogen into the inside of the heating furnace body 3, and facilitating the movement of nitrogen driven by the fan blade 57.

[0041] When producing a non-coated plate, the adsorption dryer 1 is started, nitrogen in the nitrogen storage tank 2 is sucked, and oxygen in the inside of the heating furnace body 3 is removed, so as to prevent the non-coated steel plate from being oxidized in the heating furnace body 3.

[0042] When producing a coated plate, the robot directly puts the raw material into the inside of the heating furnace body 3 for processing and production.

[0043] The adsorption dryer 1 discharges the nitrogen in the nitrogen storage tank 2 into the inside of the air inlet 52 and the hollow disc 51, and the nitrogen is discharged through the elbow pipe 56 and the nozzle 58, and the nitrogen drives the impeller 53 to rotate when flowing, and finally drives the first conical gear 54 to drive the second conical gear 55 to rotate, and finally drives the elbow pipe 56 to rotate, greatly improves the speed of the nitrogen filling the inside of the heating furnace body 3, and at the same time, the rotation of the elbow pipe 56 drives the fan blade 57 to rotate, and then improves the speed of the nitrogen flow;

[0044] When producing different layers, the added adsorption dryer 1 and nitrogen storage tank 2 can quickly switch the production mode of different layers, avoid the traditional device which can only produce one type of layer, and through the nitrogen storage tank 2, the oxygen in the heating furnace body 3 is not excluded by nitrogen + natural gas mixture, thereby avoiding the problem of large cost of natural gas pipeline caused by no natural gas connection point near the industrial park;

[0045] When the adsorption dryer 1 discharges the nitrogen in the nitrogen storage tank 2 into the inside of the heating furnace body 3, the added exhaust mechanism 5 can drive the nozzle 58 and the fan blade 57 to rotate when the nitrogen is discharged, and then under the condition of greatly improving the flow speed of the nitrogen, the nitrogen can also be quickly filled into the inside of the heating furnace body 3, and the production and processing speed of the layer is improved.

[0046] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0047] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A heating furnace suitable for use in uncoated sheet production, comprising: The application discloses a nitrogen storage tank (2) and a heating furnace body (3) which are connected with the adsorption dryer (1), and is characterized in that: the outside of the nitrogen storage tank (2) is connected with a switch valve (21), the top of the nitrogen storage tank (2) is connected with a flow meter (22), the right side of the nitrogen storage tank (2) is connected with a pressure gauge (23), the right side bottom of the nitrogen storage tank (2) is connected with a pressure reducing valve (24), the top of the heating furnace body (3) is provided with an oxygen content measuring instrument (32), the right side of the top of the heating furnace body (3) is provided with a dew point measuring instrument (31), and the inside of the heating furnace body (3) is provided with an exhaust mechanism (5). The exhaust mechanism (5) comprises a hollow disc (51), the left side of the hollow disc (51) is connected with an air inlet (52), the air inlet (52) is connected with the adsorption dryer (1) through a pipeline, the inside of the hollow disc (51) is provided with an impeller (53), the front side of the impeller (53) is connected with a first conical gear (54) through a short shaft, the right side of the hollow disc (51) is connected with an elbow (56) through a bearing, the outside of the elbow (56) is connected with a nozzle (58), the outside of the elbow (56) is sleeved with a second conical gear (55), and the second conical gear (55) is engaged with the first conical gear (54).

2. A heating furnace suitable for use in the production of uncoated sheet according to claim 1, characterized in that: The hollow disc (51) is connected with the inside of the heating furnace body (3) through a rack, and the hollow disc (51) and the short shaft are connected with a sealing bearing.

3. The heating furnace suitable for non-plated sheet production according to claim 1, characterized in that: The outside of the elbow (56) is uniformly provided with a fan blade (57), and the outside of the fan blade (57) is provided with a reinforcing rib.

4. The heating furnace suitable for non-plated sheet production according to claim 1, characterized in that: The inside of the heating furnace body (3) is provided with a sealing mechanism (4).

5. A heating furnace suitable for use in the production of uncoated sheet according to claim 4, characterized in that: The sealing mechanism (4) comprises a sealing plate (41) and an outer plate (44), the outer plate (44) is connected with the inner wall of the heating furnace body (3), the sealing plate (41) is connected with the inner wall of the heating furnace body (3) through a connecting frame (45), a rotating plate (42) is connected between the sealing plate (41) and the outer plate (44), the inside of the rotating plate (42) is connected with the sealing plate (41) and the outer plate (44) through spherical bearings (43) respectively, and the rotating plate (42) is connected with the elbow (56).

6. A heating furnace suitable for use in the production of uncoated sheet according to claim 5, characterized in that: Both sides of the sealing plate (41) are provided with pneumatic doors (46).

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