Efficient pit type carburizing furnace

Abstract

The utility model relates to the related technical field of carburizing furnaces, in particular to an efficient pit type carburizing furnace. Comprising a carburizing furnace body and a sealing cover arranged at the top of the carburizing furnace, a lifting device is arranged on one side of the carburizing furnace and comprises a first mounting plate, a first air cylinder and a first transmission rod, and an air exchange device is arranged on the side, away from the lifting device, of the carburizing furnace and comprises a second mounting plate, a second air cylinder, a second transmission rod, a fan and a ventilation pipe. Firstly, the first air cylinder is started to control the first transmission rod to lift the sealing cover, the sealing groove in the bottom of the sealing cover is taken out of the sealing ring on the top of the carburizing furnace, and at the moment, a workpiece can be taken out of the containing frame at the bottom of the sealing cover. A conveying opening is formed in the top of the sealing cover, the ventilation pipe is driven by the second air cylinder to enter the carburizing furnace through the conveying opening to be rapidly cooled, the situation that the natural cooling efficiency is too low is avoided, the heat exchange efficiency is improved, the using effect is good, the working efficiency is improved, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to carburizing furnaces, in particular to a high-efficiency pit-type carburizing furnace. Background Art

[0002] Chemical heat treatment is to heat the workpiece in a medium containing carbon, nitrogen or other alloy elements and keep it warm for a long time, so that elements such as carbon, nitrogen, boron and chromium can penetrate into the surface of the workpiece. A carburizing furnace is used during chemical heat treatment, so an insulating pit carburizing furnace is needed to complete the chemical heat treatment of the workpiece.

[0003] After carburizing is completed, the temperature in the existing carburizing furnace is still relatively high, and the natural cooling efficiency is too low. It often takes a long time to wait for the next round of carburizing, which affects work efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-efficiency pit-type carburizing furnace in view of the above-mentioned defects.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows: a high-efficiency pit-type carburizing furnace, comprising a carburizing furnace main body and a sealing cover arranged on the top of the carburizing furnace, a lifting device is arranged on one side of the carburizing furnace, the lifting device comprises a first mounting plate, a first cylinder and a first transmission rod, the first mounting plate is fixedly arranged on one side of the carburizing furnace, the first cylinder is fixedly arranged on the first mounting plate, one end of the first transmission rod is fixedly connected to the output end of the first cylinder, and the other end of the first transmission rod is fixedly connected to the sealing cover; a ventilation device is arranged on the side of the carburizing furnace away from the lifting device, the ventilation device comprises a second mounting plate, a second cylinder, a second transmission rod, a fan and a ventilation pipe, the second mounting plate is fixedly arranged on the side of the carburizing furnace away from the first mounting plate, the second cylinder is fixedly arranged on the second mounting plate, the second transmission rod is fixedly connected to the output end of the second cylinder, the fan is fixedly arranged above the second transmission rod, and the ventilation pipe is vertically arranged above the sealing cover and one end of the ventilation pipe is connected to the fan.

[0006] Furthermore, a transmission port is provided at the top of the sealing cover, the size of the transmission port matches the caliber of the ventilation pipe, and a threaded cover is provided on the transmission port, which seals the transmission port through a threaded connection.

[0007] Furthermore, a sealing ring is arranged on the top of the carburizing furnace, a sealing groove is opened on the bottom of the sealing cover, and the sealing cover covers the sealing ring through the sealing groove so that the sealing cover is arranged on the top of the carburizing furnace.

[0008] Furthermore, a heat insulating layer is provided on the inner wall of the carburizing furnace, and the carburizing furnace has a cylindrical structure.

[0009] Furthermore, a placement rack is provided at the bottom of the sealing cover.

[0010] The beneficial effects of the utility model are:

[0011] The utility model is provided with a lifting device and an air exchange device, wherein the lifting device comprises a first mounting plate, a first cylinder and a first transmission rod, and the air exchange device comprises a second mounting plate, a second cylinder, a second transmission rod, a fan and a ventilation pipe. Through the cooperation between the lifting device and the ventilation pipe, the sealing cover is first lifted by operating the first transmission rod by starting the first cylinder, and the sealing groove at the bottom of the sealing cover is taken out from the sealing ring at the top of the carburizing furnace, and the workpiece can be taken out from the placement rack at the bottom of the sealing cover. A transmission port is provided at the top of the sealing cover, and the size of the transmission port is consistent with the caliber of the ventilation pipe. The ventilation pipe is driven by the second cylinder and can enter the carburizing furnace through the transmission port for rapid cooling, thereby avoiding too low natural cooling efficiency, improving heat exchange efficiency, having good use effect, improving work efficiency, and having great practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings.

[0013] Figure 1 It is a front sectional view of the utility model.

[0014] Figure 2 It is a side schematic diagram of the utility model.

[0015] Figure 3 It is an enlarged schematic diagram of point A of the present utility model.

[0016] Among them: 1 is a carburizing furnace, 2 is a sealing cover, 3 is a first mounting plate, 4 is a first cylinder, 5 is a first transmission rod, 6 is a second mounting plate, 7 is a second cylinder, 8 is a second transmission rod, 9 is a fan, 10 is a ventilation pipe, 11 is a transmission port, 12 is a threaded cover, 13 is a sealing ring, 14 is a sealing groove, 15 is a heat insulation layer, and 16 is a placement rack. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] See also Figure 1-Figure 3A high-efficiency pit-type carburizing furnace comprises a carburizing furnace 1 main body and a sealing cover 2 arranged on the top of the carburizing furnace 1. A lifting device is arranged on one side of the carburizing furnace 1, and the lifting device comprises a first mounting plate 3, a first cylinder 4 and a first transmission rod 5. The first mounting plate 3 is fixedly arranged on one side of the carburizing furnace 1, and the first cylinder 4 is fixedly arranged on the first mounting plate 3. One end of the first transmission rod 5 is fixedly connected to the output end of the first cylinder 4, and the other end of the first transmission rod 5 is fixedly connected to the sealing cover 2; a ventilation device is arranged on the side of the carburizing furnace 1 away from the lifting device, and the ventilation device comprises a second mounting plate 6, a second cylinder 7, a second transmission rod 8, a fan 9 and a ventilation pipe 10. The second mounting plate 6 is fixedly arranged on the side of the carburizing furnace 1 away from the first mounting plate 3, and the second cylinder 7 is fixedly arranged on the second mounting plate 6. The second transmission rod 8 is fixedly connected to the output end of the second cylinder 7, and the fan 9 is fixedly arranged above the second transmission rod 8. The ventilation pipe 10 is vertically arranged above the sealing cover 2 and one end of the ventilation pipe 10 is connected to the fan 9.

[0019] Furthermore, a transmission port 11 is provided at the top of the sealing cover 2 , the size of the transmission port 11 matches the caliber of the ventilation pipe 10 , and a threaded cover 12 is provided on the transmission port 11 , and the threaded cover 12 seals the transmission port 11 through a threaded connection.

[0020] Furthermore, a sealing ring 13 is arranged on the top of the carburizing furnace 1 , a sealing groove 14 is opened on the bottom of the sealing cover 2 , and the sealing cover 2 covers the sealing ring 13 through the sealing groove 14 so that the sealing cover 2 is arranged on the top of the carburizing furnace 1 .

[0021] Furthermore, a heat insulating layer 15 is provided on the inner wall of the carburizing furnace 1, and the carburizing furnace 1 is a cylindrical structure.

[0022] Furthermore, a placement rack 16 is provided at the bottom of the sealing cover 2 .

[0023] In the embodiment of the present utility model, please refer to Figure 1-Figure 3 Working principle: When using the carburizing furnace 1, through the cooperation of the lifting device and the air exchange device, firstly, the sealing cover 2 is lifted by operating the first transmission rod 5 by starting the first cylinder 4, and the sealing groove 14 at the bottom of the sealing cover 2 is taken out from the sealing ring 13 at the top of the carburizing furnace 1. At this time, the workpiece can be taken out from the placement rack 16 at the bottom of the sealing cover 2. A transmission port 11 is opened at the top of the sealing cover 2. The size of the transmission port 11 is consistent with the caliber of the ventilation pipe 10. The ventilation pipe 10 is driven by the second cylinder 7 and can enter the carburizing furnace 1 through the transmission port 11 for rapid cooling, avoiding the natural cooling efficiency being too low, improving the heat exchange efficiency, and having a good use effect.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high-efficiency pit-type carburizing furnace, comprising a carburizing furnace (1) body and a sealing cover (2) arranged on the top of the carburizing furnace (1), characterized in that: A lifting device is provided on one side of the carburizing furnace (1), and the lifting device comprises a first mounting plate (3), a first cylinder (4) and a first transmission rod (5); the first mounting plate (3) is fixedly arranged on one side of the carburizing furnace (1); the first cylinder (4) is fixedly arranged on the first mounting plate (3); one end of the first transmission rod (5) is fixedly connected to the output end of the first cylinder (4); and the other end of the first transmission rod (5) is fixedly connected to the sealing cover (2); A ventilation device is provided on a side of the carburizing furnace (1) away from the lifting device, and the ventilation device comprises a second mounting plate (6), a second cylinder (7), a second transmission rod (8), a fan (9) and a ventilation pipe (10); the second mounting plate (6) is fixedly arranged on a side of the carburizing furnace (1) away from the first mounting plate (3); the second cylinder (7) is fixedly arranged on the second mounting plate (6); the second transmission rod (8) is fixedly connected to the output end of the second cylinder (7); the fan (9) is fixedly arranged above the second transmission rod (8); the ventilation pipe (10) is vertically arranged above the sealing cover (2) and one end of the ventilation pipe (10) is connected to the fan (9).

2. A high-efficiency pit-type carburizing furnace according to claim 1, characterized in that: The top of the sealing cover (2) is provided with a transmission port (11), the size of the transmission port (11) matches the caliber of the ventilation pipe (10), and the transmission port (11) is provided with a threaded cover (12), and the threaded cover (12) is connected to seal the transmission port (11) through a threaded connection.

3. The high-efficiency pit-type carburizing furnace according to claim 1, characterized in that: A sealing ring (13) is arranged on the top of the carburizing furnace (1), a sealing groove (14) is opened on the bottom of the sealing cover (2), and the sealing cover (2) covers the sealing ring (13) through the sealing groove (14) so ​​that the sealing cover (2) is arranged on the top of the carburizing furnace (1).

4. The high-efficiency pit-type carburizing furnace according to claim 1, characterized in that: The inner wall of the carburizing furnace (1) is provided with a heat insulation layer (15), and the carburizing furnace (1) is in a cylindrical structure.

5. The high-efficiency pit-type carburizing furnace according to claim 1, characterized in that: A placement rack (16) is provided at the bottom of the sealing cover (2).

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