Auxiliary structure for blowing gas to furnace tube and heat treatment furnace

Abstract

An auxiliary structure for blowing gas to a furnace tube and a heat treatment furnace, the auxiliary structure comprising: a furnace tube cover, which is detachably mounted at a pipe opening of a furnace tube, a cap of the furnace tube cover outwardly protruding to form a blow nozzle, the blow nozzle being a hollow structure and having through ends; and an annular clamping groove being formed at the cap of the furnace tube cover and close to the pipe opening of the furnace tube, the clamping groove being in interference fit with the pipe opening of the furnace tube. By sleeving a furnace tube cover with a blow nozzle on the furnace tube and sleeving a blow pipe on the blow nozzle, the gas in the furnace cannot flow back, and the hot gas can be effectively prevented from being sprayed from the blow opening when the furnace tube is cleaned, so as to avoid the safety hazard to the personnel.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, specifically to an auxiliary structure for furnace tube blowing and a heat treatment furnace. Background Technology

[0002] In the wire manufacturing industry, heat treatment is an essential process. During the heat treatment process, the wire will be inserted into the furnace tube from the inlet at one end of the furnace tube, heated by the heat treatment furnace, and then exit from the outlet at the other end of the furnace tube to complete the heating. During this process, impurities will accumulate in the furnace tube, causing abnormalities such as scratches on the product during the heat treatment process.

[0003] To remove impurities from the furnace tubes and prevent product scratches, it is necessary to clean the inside of the furnace tubes. Due to the long and thin nature of the heat treatment furnace tubes, cleaning can only be done by blowing air. However, currently, air is blown directly into the furnace tubes through air-blowing pipes. Because the ends of the furnace tubes are not sealed, hot air (100-300℃) is ejected in the opposite direction from the tube wall along the gaps in the air-blowing pipe during blowing (e.g., Figure 3 As shown in the image, this could easily cause burns to operators or respiratory irritation from the high-temperature gas, posing a safety hazard. Utility Model Content

[0004] The purpose of this invention is to solve the problem that when air is blown directly into the furnace tube using an air blowing pipe, hot air will be ejected from the tube wall along the air blowing pipe, causing a safety hazard. Therefore, an auxiliary structure for blowing air into the furnace tube is proposed.

[0005] The objective of this utility model can be achieved through the following technical solutions: An auxiliary structure for furnace tube blowing, the auxiliary structure comprising: A furnace tube cover is detachably installed at the opening of the furnace tube. The cap of the furnace tube cover protrudes outward to form a nozzle, which is hollow and has two through ends. The furnace tube cover is provided with a ring-shaped groove near the opening of the furnace tube, and the groove is interference-fitted with the opening of the furnace tube.

[0006] As a further embodiment of this utility model, the groove structure of the card slot is adapted to the port structure of the furnace tube.

[0007] A heat treatment furnace includes an auxiliary structure and a snap-fit ​​portion formed on the wall of the furnace tube that protrudes outward or is recessed inward. At least two rods are hinged to the furnace tube cover, and the rods are evenly distributed around the circumference of the furnace tube cover. The end of the rod near the snap-fit ​​part is bent downward to form a buckle, and the buckle and the snap-fit ​​part are engaged.

[0008] As a further embodiment of this utility model: the number of the snap-fit ​​parts is the same as the number of the rods, and their positions correspond one-to-one.

[0009] As a further embodiment of this utility model, the bending angle of one end of the snap-fit ​​part is ≥90°.

[0010] As a further embodiment of this utility model: the snap-fit ​​part is also provided with a snap-fit ​​groove adapted to the snap fastener, and the snap fastener engages with the snap-fit ​​groove.

[0011] The beneficial effects of this utility model are as follows: By covering the furnace tube with a furnace tube cover with a nozzle and attaching the air pipe to the nozzle, the gas inside the furnace will not flow back. This can effectively prevent hot air from being ejected from the air outlet when cleaning impurities inside the furnace tube, thus avoiding potential safety hazards to personnel. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 and 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of the gas guidance using the air blowing pipe on site.

[0014] In the diagram: 1. Furnace tube; 11. Snap-fit ​​part; 2. Furnace tube cover; 21. Snap-fit ​​groove; 22. Nozzle; 3. Rod; 31. Support part. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1, as Figure 1 and 2 As shown, an auxiliary structure for furnace tube blowing includes a furnace tube 1 and a furnace tube cover 2. The furnace tube 1 is a hollow tubular structure used for threading wires and for heat treatment; The furnace tube cover 2 is detachably fitted with the opening of the furnace tube 1. The furnace tube cover 2 includes a cap and a cap opening. A nozzle 22 is formed by protruding outward from the cap. The nozzle 22 has a hollow structure and is open at both ends. The hollow channel of the nozzle 22 is connected to the hollow inner cavity of the furnace tube 1 and is used for the air blowing pipe to blow air into the furnace tube 1. An annular groove 21 is provided at the opening of the cover. The groove structure of the groove 21 is adapted to the opening structure of the furnace tube 1, and the groove 21 is interference-fitted with the opening of the furnace tube 1 to achieve a sealed connection between the furnace tube cover 2 and the furnace tube 1.

[0017] Furthermore, the nozzle 22 is integrally formed with the cap of the furnace tube cover 2, the axis of the nozzle 22 is collinear with the axis of the furnace tube 1, and the inner diameter of the nozzle 22 is not less than 1 / 2 of the inner diameter of the furnace tube 1 and not greater than the inner diameter of the furnace tube 1, so as to ensure that the blowing airflow enters the furnace tube 1 stably.

[0018] It should be noted that in actual use, the outlet of an external air pump or other type of compressed gas device should be connected to the air blowing pipe, and the other end of the air blowing pipe should be fitted onto the nozzle 22. Then, simply turn on the air pump or compressed gas device to spray gas into the furnace tube 1 through the air blowing pipe and nozzle 22, and the impurities in the furnace tube can be removed by the sprayed gas.

[0019] Example 2, based on Example 1, further includes a snap-fit ​​portion 11 formed on the wall of the furnace tube 1 that protrudes outward or is recessed inward; Among them, the outward protruding snap-fit ​​part 11 is either a protruding block or a protruding ring-shaped object. If it is a block, its number must correspond one-to-one with the rod 3. If it is a ring-shaped object, its ring-shaped object must be fitted onto the furnace tube 1. The number of its ring-shaped objects is not related to the number of rods 3.

[0020] For stability considerations, at least two rods 3 are hinged on the furnace tube cover 2. A support part 31 is fixed on the furnace tube cover 2, and a shaft is inserted horizontally on the rod 3. The rod 3 is hinged to the support part 31 through the shaft, so the rod 3 can rotate on the furnace tube cover 2 with the shaft as the center.

[0021] Furthermore, the rods 3 are evenly distributed around the furnace tube cover 2. The end of the rod 3 near the snap-fit ​​part 11 is bent downward to form a buckle. The angle of the downward bend is ≥90°, and the buckle and the snap-fit ​​part 11 are engaged.

[0022] Furthermore, the snap-fit ​​part 11 is also provided with a snap-fit ​​groove that is adapted to the buckle, and the buckle engages with the snap-fit ​​groove.

[0023] Furthermore, the number of snap-fit ​​parts 11 is the same as the number of rods 3, and their positions correspond one-to-one.

[0024] In embodiment three, a return spring (not visible in the figure) is sleeved on the shaft. The function of the return spring is to allow the rod 3 to rotate under the force, and when the force disappears, the rod 3 can automatically return to its original position by rotation under the action of the return spring.

Claims

1. An auxiliary structure for furnace tube air blowing, characterized in that, The auxiliary structure includes: Furnace tube cover (2), the furnace tube cover (2) is detachably installed at the opening of the furnace tube (1), the cap of the furnace tube cover (2) protrudes outward to form a nozzle (22), the nozzle (22) is a hollow structure and is through at both ends; The furnace tube cover (2) is provided with a ring-shaped groove (21) near the opening of the furnace tube (1), and the groove (21) is interference-fitted with the opening of the furnace tube (1).

2. The auxiliary structure according to claim 1, characterized in that, The groove of the card slot (21) is adapted to the opening of the furnace tube (1).

3. A heat treatment furnace, characterized in that, The auxiliary structure as described in claim 1 or 2 is further comprising a snap-fit ​​portion (11) formed on the wall of the furnace tube (1) that protrudes outward or is recessed inward. At least two rods (3) are hinged on the furnace tube cover (2), and the rods (3) are evenly distributed around the furnace tube cover (2). The end of the rod (3) near the snap-fit ​​part (11) is bent downward to form a buckle, and the buckle and the snap-fit ​​part (11) are engaged.

4. A heat treatment furnace according to claim 3, characterized in that, The number of the snap-fit ​​parts (11) is the same as the number of the rods (3), and their positions correspond one-to-one.

5. A heat treatment furnace according to claim 3, characterized in that, The bending angle of one end of the snap-fit ​​part (11) is ≥90°.

6. A heat treatment furnace according to claim 3, characterized in that, The snap-fit ​​part (11) is also provided with a slot that is adapted to the buckle, and the buckle engages with the slot.

Images