Sealing flange assembly and heating furnace structure

Abstract

The utility model discloses a sealing flange assembly and a heating furnace structure. The sealing flange assembly comprises a flange body, a sealing ring, a water cooling channel and an air cooling channel. The sealing rings are embedded in the two sides of the flange body and used for being attached to the two end faces connected with the flange body in a sealed mode. The water cooling channel is arranged in the flange body and provided with a water inlet and a water outlet which extend out of the flange body. The air cooling channel is annularly arranged on one side of the interior of the flange body. The flange body is provided with an air inlet communicated with the air cooling channel and a plurality of air nozzles; wherein the multiple air nozzles surround the outer portion of one sealing ring and are arranged in an inclined mode, and the inclined direction faces the axis of the flange body. Through the arrangement, the service life of the sealing ring can be effectively prolonged, and the time required for cooling waiting can be shortened, so that the production rate is improved, and the risk problem caused by frequent movement of a water cooling system does not need to be worried about.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heating furnace, in particular to a sealing flange assembly and heating furnace structure. BACKGROUND

[0002] In today's industrial production field, especially in the boron expansion equipment application in the photovoltaic industry, the process preparation under vacuum high temperature environment is a very key link. The furnace door sealing performance of the boron expansion equipment as the core device to realize the process plays a decisive role in the stability and efficiency of the whole production process.

[0003] At present, the furnace door sealing of the boron expansion equipment generally adopts rubber sealing ring to achieve. In order to guarantee the working life of the sealing ring in the high temperature environment, the prior art mainly relies on water cooling mode. Specifically, there are two common installation and cooling forms: one is to install the furnace door sealing ring on the flange side and water cooling; the other is to install the furnace door sealing ring on the furnace door side, and water cooling the furnace door at the same time.

[0004] However, the above scheme has certain defects: such as when using water cooling mode for cooling, the sealing ring temperature can indeed be effectively controlled when the furnace door is closed, but once the furnace door is opened, the high temperature gas flow of about 800 DEG C in the furnace cavity will be sprayed out at a very fast speed, directly impacting on the surface of the O type sealing ring. At present, the sealing ring used in the industry can only withstand a maximum temperature of about 250 DEG C. Therefore, in order to avoid the rapid failure of the sealing ring due to high temperature, the furnace door can only be opened after the high temperature gas in the furnace is cooled to below 500 DEG C in actual operation. But in the vacuum state, due to the very slow temperature drop in the furnace, it is necessary to wait for a long time during production, which greatly reduces the production capacity. In addition, even if this kind of waiting cooling measure is taken, the sealing ring will still be seriously damaged, often failing in a few days, and then the sealing ring needs to be replaced frequently, increasing the equipment maintenance cost and downtime, seriously restricting the improvement of production efficiency.

[0005] When the furnace door sealing ring is installed on the furnace door side, although the sealing ring can be away from the hot gas at the furnace door to some extent after the furnace door is completely opened, the sealing ring will still be baked by high temperature in the period when the furnace door is just opened. Moreover, since the furnace door is in motion state during opening and closing, the water cooling system connected to the furnace door is easy to be damaged and leaked due to frequent motion, which not only affects the water cooling effect, but also may cause equipment failure, further increasing the production risk and maintenance difficulty.

[0006] Therefore, a sealing flange assembly and heating furnace structure are needed to solve the above problems. UTILITY MODEL CONTENTS

[0007] The utility model discloses a purpose at, provide a kind of sealing flange assembly and heating furnace structure, for prolonging the service life of sealing ring, and still can shorten the time required for cooling and waiting, to improve production rate, and need not worry about the risk problem caused by frequent movement of water cooling system.

[0008] To solve the above technical problems, the utility model provides a kind of sealing flange assembly, including flange body, sealing ring, water cooling channel and air cooling channel;

[0009] The sealing ring is embedded in the two sides of the flange body, and is used for sealing and fitting with the two end faces of the flange body connected;

[0010] The water cooling channel is arranged inside the flange body, and has a water inlet and a water outlet extending to the outside of the flange body;

[0011] The air cooling channel is annularly arranged on one side of the inside of the flange body;

[0012] The flange body is provided with an air inlet and a plurality of air injection ports communicated with the air cooling channel;

[0013] Among them, a plurality of the air injection ports are arranged outside one of the sealing rings, and are arranged obliquely, and the oblique direction is towards the axis of the flange body.

[0014] Further, a plurality of the air injection ports are annularly and equidistantly arranged.

[0015] Further, the included angle formed by the air injection port and the axis line direction of the flange body is 15°-75°.

[0016] Further, the water cooling channel is spirally arranged.

[0017] Further, the size of the cross section of the water cooling channel matches the thickness of the cross section of the sealing ring, and is located in the same horizontal plane.

[0018] Further, the sealing ring is made of high-temperature-resistant fluorine rubber material.

[0019] In another aspect, the utility model further provides a heating furnace structure, which comprises a furnace body, a furnace door for opening or closing the furnace body, and a sealing flange assembly as described in the above embodiments.

[0020] The sealing flange assembly is clamped between the furnace body and the furnace door, and the two sealing rings are tightly attached to the furnace body and the furnace door respectively.

[0021] Among them, a plurality of the air injection ports are arranged outside the sealing ring tightly attached to the furnace door.

[0022] Further, a plurality of said air injection ports are used to form an annular air flow cover outside said sealing ring close to said furnace door.

[0023] Further, one end of said furnace body has a stepped surface, and said flange body is arranged on said stepped surface.

[0024] Further, said furnace door is moved along the axial direction of said sealing flange assembly to open or close said furnace body.

[0025] Compared with the prior art, the utility model has at least the following beneficial effects:

[0026] By arranging the water cooling channel on the flange body, water cooling is performed, and by arranging the air cooling channel and the plurality of air injection ports around the outside of the sealing ring on the flange body, air cooling is performed, so that when the furnace door is opened, the temperature of the furnace body can be quickly reduced by water cooling, thereby shortening the time required for cooling, and when the furnace door is opened, the high-temperature gas in the furnace body can be blocked from directly contacting the sealing ring by the air injection ports, thereby prolonging the service life of the sealing ring, and the time required for cooling and waiting can be shortened to improve the production rate.

[0027] In addition, since the water cooling channel is arranged on the flange body, and the flange body is always in a fixed state relative to the furnace door and the furnace body, there is no need to worry about the water cooling channel being damaged and leaking due to frequent movement, thereby improving the safety factor. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 1 is a structural schematic view of the sealing flange assembly in the first embodiment of the utility model;

[0029] Fig. 2 is a structural schematic view of the heating furnace structure in the second embodiment of the utility model;

[0030] Fig. 3 is a structural schematic view of the furnace door and the furnace body of the heating furnace structure in the second embodiment of the utility model when separated.

[0031] Corresponding parts are denoted by the same reference numerals in the various figures of the drawings. DETAILED DESCRIPTION

[0032] The sealing flange assembly and heating furnace structure of this utility model will be described in more detail below with reference to the schematic diagrams, which illustrate preferred embodiments of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving the advantageous effects of this utility model. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit this utility model.

[0033] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0034] Example 1

[0035] like Figs. 1 to 3 As shown in the figure, this utility model embodiment proposes a sealing flange assembly, including a flange body 1, a sealing ring 2, a water cooling channel 3, and an air cooling channel 4.

[0036] The sealing ring 2 is embedded on both sides of the flange body 1 and is used to seal and fit the two end faces connected to the flange body 1 to achieve the sealing function.

[0037] The water-cooling channel 3 is located inside the flange body 1 and has an inlet 31 and an outlet 32 ​​extending to the outside of the flange body 1. By providing the water-cooling channel 3 inside the flange body 1, and with the inlet 31 and outlet 32, the flange body 1 can be effectively cooled when a water source is connected to the inlet 31. This protects the sealing ring 2 and also reduces the temperature inside the furnace body 5, shortening the time required for the furnace body 5 to cool down, thereby increasing production speed.

[0038] It should be noted that in this embodiment, since the water cooling channel 3 is set on the flange body 1, compared with the prior art where the water cooling channel 3 is set on the furnace door 6, it can effectively avoid the water cooling channel 3 from being damaged and leaking due to frequent movement, thus improving the safety factor.

[0039] Preferably, the air-cooling channel 4 is arranged in a ring shape on one side inside the flange body 1 to protect the sealing ring 2 that fits against the furnace door 6.

[0040] Specifically, the flange body 1 is provided with an air inlet 11 that communicates with the air-cooling channel 4 and a plurality of air jets 12.

[0041] And, multiple said air outlet 12 around one of the sealing ring 2 outside, and tilt set, and tilt the direction towards the flange body 1 of the shaft, so that when the oven door 6 and oven body 5 separate, multiple air outlet 12 can be outside the sealing ring 2 jet, to form a ring-shaped airflow cover, in turn, can effectively prevent the hot gas and sealing ring 2 direct contact, so as to achieve the purpose of prolonging the service life of sealing ring 2.

[0042] In order to improve the protection effect of sealing ring 2, so here will be multiple said air outlet 12 ring equidistantly arranged, to better disturb the hot gas output by the oven body 5, prevent the hot gas and sealing ring 2 direct contact, to improve the protection effect of sealing ring 2 purposes.

[0043] In this embodiment, the angle of the air outlet 12 is further limited to better form the ring-shaped airflow cover. Specifically, the included angle between the air outlet 12 and the center line direction of the flange body 1 is 15°-75°.

[0044] It should be noted that the angle of the air outlet 12 and the flange body 1 mainly depends on the cross-sectional size of the sealing ring 2, which needs to ensure that the maximum range of the air outlet 12 can completely wrap the sealing ring 2, so as to improve the protection effect of the sealing ring 2.

[0045] In this embodiment, the water cooling channel 3 is spirally arranged to prolong the water cooling circulation path and improve the cooling protection effect.

[0046] In addition, the cross-sectional size of the water cooling channel 3 matches the thickness of the cross-section of the sealing ring 2 and is located in the same horizontal plane, so that the water cooling can effectively cool the sealing ring 2.

[0047] In other embodiments, the sealing ring 2 is made of high-temperature-resistant fluorine rubber material to further prolong the service life of the sealing ring 2.

[0048] Embodiment two

[0049] As shown in Fig. 2 and Fig. 3 Based on the first embodiment, the heating furnace structure is further proposed, which can improve the protection effect of the sealing ring 2 when the oven door 6 and the oven body 5 are relatively separated, so as to prolong the service life of the sealing ring 2.

[0050] Specifically, the heating furnace structure includes an oven body 5, an oven door 6 for opening or closing the oven body 5, and a sealing flange assembly as described in the above embodiments.

[0051] The sealing flange assembly is clamped between the furnace body 5 and the furnace door 6, and the two sealing rings 2 are in close contact with the furnace body 5 and the furnace door 6 respectively, so as to realize the sealing function.

[0052] It should be noted that the plurality of air injection ports 12 are arranged outside the sealing ring 2 in close contact with the furnace door 6.

[0053] Specifically, the plurality of air injection ports 12 are used to form an annular air flow cover outside the sealing ring 2 in close contact with the furnace door 6, so that the high-temperature gas in the furnace body 5 can be blocked from directly contacting the sealing ring 2 by means of the air injection port 12, thereby prolonging the service life of the sealing ring 2.

[0054] In this embodiment, one end of the furnace body 5 has a stepped surface 51, and the flange body 1 is arranged on the stepped surface 51, that is, the stepped surface 51 is arranged to support the flange body 1, so as to fix the flange body 1 on the furnace body 5.

[0055] In other embodiments, the furnace door 6 is further limited to ensure that the furnace door 6 does not interfere with the air injection port 12 and other components when the furnace door 6 is opened and closed, thereby providing a guarantee for the stability of the device operation. Specifically, the furnace door 6 moves along the axial direction of the sealing flange assembly to open or close the furnace body 5.

[0056] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A sealed flange assembly, characterized by The sealing flange assembly comprises a flange body, a sealing ring, a water cooling channel and an air cooling channel. The sealing ring is embedded on both sides of the flange body and used for sealing and fitting with two end faces of the flange body. The water cooling channel is arranged inside the flange body and has a water inlet and a water outlet extending to the outside of the flange body. The air cooling channel is arranged on one side of the flange body in a ring shape. The flange body is provided with an air inlet and a plurality of air outlets in communication with the air cooling channel. The plurality of air outlets are arranged outside one of the sealing rings in an inclined manner and the inclined direction is towards the axis of the flange body.

2. The sealed flange assembly of claim 1, wherein, The plurality of air outlets are arranged in a ring shape at equal distances.

3. The sealed flange assembly of claim 1, wherein, The included angle between the air outlet and the axis of the flange body is 15°-75°.

4. The sealed flange assembly of claim 1, wherein, The water cooling channel is arranged in a spiral shape.

5. The sealed flange assembly of claim 1, wherein, The size of the cross section of the water cooling channel matches the thickness of the cross section of the sealing ring and is located in the same horizontal plane.

6. The sealed flange assembly of claim 1, wherein, The sealing ring is made of high-temperature-resistant fluorine rubber.

7. A furnace structure, characterized by The sealing flange assembly comprises a furnace body, a furnace door for opening or closing the furnace body and a sealing flange assembly according to any one of claims 1-6. The sealing flange assembly is arranged between the furnace body and the furnace door, and the two sealing rings are in close contact with the furnace body and the furnace door respectively. The plurality of air outlets are arranged outside the sealing ring in close contact with the furnace door.

8. The furnace structure of claim 7, wherein The plurality of air outlets are used to form an annular air flow cover outside the sealing ring in close contact with the furnace door.

9. The furnace structure of claim 7, wherein One end of the furnace body has a stepped surface, and the flange body is arranged on the stepped surface.

10. The furnace structure of claim 7, wherein The furnace door moves along the axis of the sealing flange assembly to open or close the furnace body.

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