Vacuum debinding sintering furnace convenient to clean

Abstract

The utility model relates to vacuum debinding sintering furnace technical field, especially a kind of vacuum debinding sintering furnace of easy cleaning, heating wire is connected on the outer wall of debinding pipeline, scraping spring group is connected in debinding pipeline, open box is communicated on debinding pipeline, the upper end of open box is fixedly connected with servo motor, the output of servo motor extends to open box, and fixedly connected with winding disc, open box is fixedly connected with the hole plate in, one end of scraping spring group is fixedly connected with steel rope, one end of steel rope passes through the hole plate, and fixedly connected to winding disc on.The utility model continuously pulls scraping spring group in the reciprocating rotation process of winding disc, scraping spring group is stretched after being pulled, scraping spring group is stretched, and the inner wall of debinding pipeline is scraped during the elongation process of scraping spring group, reduces the bonding strength of binder and debinding pipeline, and it is convenient for rotary vane vacuum pump to extract binder, to improve the cleaning effect of binder in the inner wall of debinding pipeline.

Description

Technical Field

[0001] This utility model relates to the field of vacuum degreasing sintering furnace technology, and in particular to a vacuum degreasing sintering furnace that is easy to clean. Background Technology

[0002] Sintering furnaces are mainly used in the steel, metallurgical, and new materials industries. Vacuum degreasing sintering furnaces have both degreasing and sintering functions. The purpose of degreasing is to remove the binder contained in the formed blank; the purpose of sintering is to shrink the porous degreased blank into a dense product with certain structure and properties.

[0003] In the application document CN201320844355.X, when cleaning is required, the heating device 4 is activated to heat the degreasing pipe 3, thereby melting the adhesive inside the degreasing pipe 3 and making it easier to remove the degreasing pipe 3.

[0004] However, due to the strong chemical adsorption or physical embedding between some adhesives and the inner wall of the degreasing pipe, even after heating and melting, the residues remain tightly bonded to the metal surface. In this case, relying solely on the suction effect generated by the rotary vane vacuum pump is insufficient to effectively and thoroughly remove such highly adhesive residues. The vacuum pump mainly targets fluid substances during the suction process and has limited ability to peel off the high-viscosity molten adhesives adhering to the inner wall, resulting in a decrease in actual extraction efficiency and consequently, an unsatisfactory cleaning effect on the inner wall of the degreasing pipe. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the cleaning effect on the inner wall of degreasing pipes is not ideal, and to propose a vacuum degreasing sintering furnace that is easy to clean.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design an easy-to-clean vacuum degreasing sintering furnace, including a sintering furnace body. A degreasing pipe is connected to one side of the sintering furnace body. A heating wire is connected to the outer wall of the degreasing pipe. An insulation sleeve is fitted onto the outer wall of the degreasing pipe. A scraper spring assembly is connected inside the degreasing pipe and contacts the inner wall of the degreasing pipe. An open box is connected to the degreasing pipe. A servo motor is fixedly connected to the upper end of the open box. The output end of the servo motor extends into the open box and is fixedly connected to a winding reel. A perforated plate is fixedly connected inside the open box. A steel rope is fixedly connected to one end of the scraper spring assembly. One end of the steel rope passes through the perforated plate and is fixedly connected to the winding reel.

[0007] Preferably, the scraper spring assembly is composed of several springs connected in series.

[0008] Preferably, the open box is connected to a maintenance plate.

[0009] Preferably, a heat insulation mechanism is fixedly connected to the perforated plate. The heat insulation mechanism includes a perforated box, which is fixedly connected to the perforated plate. An installation groove is provided inside the perforated box, and two parallel fixing rings are connected inside the installation groove. A heat insulation ring is fixedly connected to the inner ring wall of each fixing ring. One end of the steel rope passes through the heat insulation ring and the perforated box in sequence.

[0010] Preferably, the mounting groove is connected to two parallel sealing rings, which are staggered with the fixing ring.

[0011] Preferably, the sealing ring is a high-temperature resistant rubber ring.

[0012] The vacuum degreasing sintering furnace proposed in this utility model is easy to clean, and its advantages are as follows: After the servo motor is powered on, it drives the take-up reel to rotate back and forth. During the reciprocating rotation of the take-up reel, it continuously pulls the scraper spring assembly. When the scraper spring assembly is pulled and extended, it scrapes the inner wall of the degreasing pipe, reducing the adhesion strength between the adhesive and the degreasing pipe. This makes it easier for the rotary vane vacuum pump to extract the adhesive, thereby improving the cleaning effect of the adhesive on the inner wall of the degreasing pipe. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a vacuum degreasing sintering furnace that is easy to clean, as proposed in this utility model. Figure 2 This is a cross-sectional view of a vacuum degreasing sintering furnace that is easy to clean, as proposed in this utility model. Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A above.

[0014] In the diagram: 1. Sintering furnace body; 2. Degreasing pipe; 3. Rotary vane vacuum pump; 4. Insulation sleeve; 5. Heating wire; 6. Scraper spring assembly; 7. Open box; 8. Servo motor; 9. Winding reel; 10. Perforated plate; 11. Steel rope; 12. Inspection plate; 13. Heat insulation mechanism; 131. Perforated box; 132. Mounting groove; 133. Sealing ring; 134. Fixing ring; 135. Heat insulation ring. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Example 1: Refer to Figure 1-3A vacuum degreasing sintering furnace that is easy to clean includes a sintering furnace body 1. A degreasing pipe 2 is connected to one side of the sintering furnace body 1. A rotary vane vacuum pump 3 is connected to one end of the degreasing pipe 2. A heating wire 5 is connected to the outer wall of the degreasing pipe 2. An insulation sleeve 4 is fitted onto the outer wall of the degreasing pipe 2. The insulation sleeve 4 is located outside the heating wire 5. A scraper spring assembly 6 is connected inside the degreasing pipe 2. The scraper spring assembly 6 is composed of several springs connected in series. The scraper spring assembly 6 is in contact with the inner wall of the degreasing pipe 2. An open box 7 is connected to the degreasing pipe 2. A servo motor 8 is fixedly connected to the upper end of the open box 7. The output end of the servo motor 8 extends into the open box 7 and is fixedly connected to a winding reel 9. A perforated plate 10 is fixedly connected inside the open box 7. A steel rope 11 is fixedly connected to one end of the scraper spring assembly 6. One end of the steel rope 11 passes through the perforated plate 10 and is fixedly connected to the winding reel 9. A maintenance plate 12 is connected to the open box 7.

[0017] Work process: When cleaning is required, the heating wire 5 is powered on and starts to heat the degreasing pipe 3. The insulation sleeve 4 wraps the heating wire 5 to prevent the heat generated by the heating wire 5 from being released into the air and to reduce heat waste. After the degreasing pipe 3 is heated, the adhesive on its inner wall melts. The rotary vane vacuum pump 3 is started to extract the melted adhesive. After the heating time has elapsed, the servo motor 8 is powered on and starts to drive the take-up reel 9 to rotate back and forth. During the reciprocating rotation of the take-up reel 9, the scraper spring assembly 6 is continuously pulled. When the scraper spring assembly 6 is pulled, it extends and scrapes the inner wall of the degreasing pipe 3, reducing the adhesion strength between the adhesive and the degreasing pipe 3, making it easier for the rotary vane vacuum pump 3 to extract the adhesive, thereby improving the cleaning effect of the adhesive on the inner wall of the degreasing pipe 3.

[0018] Example 2: Refer to Figure 3 As another preferred embodiment of this utility model, the difference from embodiment 1 is that a heat insulation mechanism 13 is fixedly connected to the perforated plate 10. The heat insulation mechanism 13 includes a perforated box 131, which is fixedly connected to the perforated plate 10. An installation groove 132 is provided in the perforated box 131. Two parallel fixed rings 134 are connected in the installation groove 132. A heat insulation ring 135 is fixedly connected to the inner ring wall of each fixed ring 134. One end of the steel rope 11 passes through the heat insulation ring 135 and the perforated box 131 in sequence. Two parallel sealing rings 133 are connected in the installation groove 132. The sealing rings 133 and the fixed rings 134 are staggered. The sealing rings 133 are high-temperature resistant rubber rings. The perforated box 131 fixes the sealing ring 133 and the fixing ring 134. The fixing ring 134 fixes the heat insulation ring 135. After the heat insulation ring 135 and the sealing ring 133 are in place, they seal the gap between the perforated plate 10 and the steel rope 11, reducing the contact between heat and the winding reel 9.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vacuum degreasing sintering furnace that is easy to clean, comprising a sintering furnace body (1), wherein a degreasing pipe (2) is connected to one side of the sintering furnace body (1), characterized in that, in: A heating wire (5) is connected to the outer wall of the degreasing pipe (2). An insulation sleeve (4) is fitted onto the outer wall of the degreasing pipe (2). A scraper spring assembly (6) is connected inside the degreasing pipe (2). The scraper spring assembly (6) is in contact with the inner wall of the degreasing pipe (2). An open box (7) is connected to the degreasing pipe (2). A servo motor (8) is fixedly connected to the upper end of the open box (7). The output end of the servo motor (8) extends into the open box (7) and is fixedly connected to a winding reel (9). A perforated plate (10) is fixedly connected inside the open box (7). A steel rope (11) is fixedly connected to one end of the scraper spring assembly (6). One end of the steel rope (11) passes through the perforated plate (10) and is fixedly connected to the winding reel (9).

2. The easy-to-clean vacuum degreasing sintering furnace according to claim 1, characterized in that, The scraper spring assembly (6) is composed of several springs connected in series.

3. The easy-to-clean vacuum degreasing sintering furnace according to claim 1, characterized in that, The open box (7) is connected to a maintenance plate (12).

4. The easy-to-clean vacuum degreasing sintering furnace according to claim 1, characterized in that, A heat insulation mechanism (13) is fixedly connected to the perforated plate (10). The heat insulation mechanism (13) includes a perforated box (131). The perforated box (131) is fixedly connected to the perforated plate (10). An installation groove (132) is provided inside the perforated box (131). Two parallel fixing rings (134) are connected inside the installation groove (132). A heat insulation ring (135) is fixedly connected to the inner ring wall of each fixing ring (134). One end of the steel rope (11) passes through the heat insulation ring (135) and the perforated box (131) in sequence.

5. The easy-to-clean vacuum degreasing sintering furnace according to claim 4, characterized in that, The mounting groove (132) is connected to two parallel sealing rings (133), which are staggered with the fixing ring (134).

6. The easy-to-clean vacuum degreasing sintering furnace according to claim 5, characterized in that, The sealing ring (133) is a high-temperature resistant rubber ring.

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