Pushing boat type tempering heating furnace for hardening and tempering production line

Abstract

The utility model relates to the technical field of tempering heating furnaces, and discloses a push boat type tempering heating furnace for a tempering production line, which comprises a heating furnace body and a smoke exhaust pipeline connected to the top of the heating furnace body, the smoke exhaust pipeline consists of a vertical pipe, a connecting arc pipe and a transverse pipe, and the bottom surface of the vertical pipe is communicated with the heating furnace body. Two scraping strips are arranged on the inner wall of the vertical pipe in an attached mode. The inner wall of the vertical pipe can be cleaned through matched arrangement of the motor, the rotating rod, the mounting ring and the scraping strip, and compared with a traditional disassembly cleaning mode, the dust cleaning operation is effectively simplified through the design, and the maintenance difficulty is reduced. And meanwhile, accumulated dust in the vertical pipe is removed in time, and the accumulated dust can be prevented from falling off and entering the combustion flue. Through the arrangement of the dust accumulation box, the dust accumulation box can be just located below the vertical pipe, dust is collected, and then the dust can be poured out by pulling out the dust accumulation box like a drawer.

Description

Technical Field

[0001] This utility model relates to the field of tempering heating furnace technology, specifically a pushboat-type tempering heating furnace for a tempering production line. Background Technology

[0002] Forgings require quenching and tempering during processing; a tempering furnace is used in this process.

[0003] For example, patent publication number CN211005489U discloses a pusher-type tempering furnace for a gas-fired heating front shaft tempering production line, which includes a tempering heating mechanism for tempering workpieces; and a tempering pushing mechanism connected to the tempering heating mechanism and set at the feed inlet of the tempering heating mechanism for conveying workpieces into the tempering heating mechanism; wherein, the tempering pushing mechanism includes a frame, a pushing trolley and a first hydraulic cylinder, the frame is set at the feed inlet of the tempering heating mechanism, and the pushing trolley and the hydraulic cylinder are both set on the frame, and the pushing trolley can slide on the frame by being driven by the first hydraulic cylinder.

[0004] While the aforementioned device solves the problem of automating the tempering furnace production, it still has the following drawbacks: As the high-temperature flue gas from the furnace flows through the exhaust duct, its temperature gradually decreases, causing some substances to condense below their dew point and adhere to the pipe walls. Simultaneously, incomplete combustion of natural gas produces unburned substances such as carbon particles and tar, which enter the exhaust duct with the flue gas and accumulate as ash over time. Because the exhaust duct, especially the vertical section, lacks a cleaning device, the accumulated ash is difficult to remove and may fall backwards onto the guide rails, affecting the operation of the material pusher trolley. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a push-boat type tempering furnace for a tempering production line, which enables the vertical exhaust pipes on the furnace to have a cleaning structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a push-boat type tempering furnace for a tempering production line, comprising a furnace body and a flue gas duct connected to the top of the furnace body. The flue gas duct is composed of a vertical pipe, a connecting arc pipe, and a horizontal pipe. The bottom surface of the vertical pipe is connected to the furnace body. Two scraper strips are fitted into the inner wall of the vertical pipe and are symmetrically arranged. An installation ring is fixedly installed on the top of the two scraper strips. A rotating rod is fixedly connected to the axial position of the installation ring through multiple connecting ribs. A motor is fixedly installed at the outer end of one end of the rotating rod passing through the connecting arc pipe. A receiving component for receiving accumulated ash is connected to the top surface of the inner wall of the furnace body.

[0007] Furthermore, the receiving component includes an ash collection box, with side plates fixedly connected to both sides of the outer wall of the ash collection box, and a sliding groove is provided on the top surface of the inner wall of the heating furnace body. The ash collection box is slidably connected to the sliding groove through the side plates on both sides.

[0008] Furthermore, the length of the chute is twice the length of the ash collection box.

[0009] Furthermore, a limiting strip is fixedly connected to the top surface of the chute, and the dust collection box abuts against both ends of the limiting strip.

[0010] Furthermore, an arc-shaped scraper is fixedly connected to the top of the mounting ring, and the arc-shaped scraper is in contact with the inner wall of the connecting arc tube.

[0011] Furthermore, the outer walls of the scraper are chamfered on both sides.

[0012] Furthermore, brackets connected to the heating furnace body are fixedly installed on both sides of the outer wall of the motor.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model, through the coordinated arrangement of a motor, rotating rod, mounting ring, and scraper, can clean the inner wall of the vertical pipe. Compared with traditional disassembly and cleaning methods, this design effectively simplifies the ash removal operation and reduces maintenance difficulty. Simultaneously, timely removal of accumulated ash inside the vertical pipe prevents dust from accumulating and falling into the furnace tunnel.

[0015] 2. This utility model, through the setting of the dust collection box, can be positioned just below the vertical pipe to collect dust. Then, like pulling out a drawer, the dust collection box can be pulled out to empty the dust. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0017] Figure 2 This is a three-dimensional cross-sectional structural diagram of a partial state of the present invention;

[0018] Figure 3 This is a three-dimensional cross-sectional structural diagram of the vertical tube of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the motor, mounting ring, and scraper of this utility model;

[0020] Figure 5 This is a three-dimensional cross-sectional structural diagram of a partial state of the heating furnace body of this utility model;

[0021] Figure 6 For this Figure 5 A magnified three-dimensional structural diagram of A in the middle.

[0022] In the diagram: 1. Heating furnace body; 2. Vertical pipe; 3. Horizontal pipe; 4. Motor; 5. Support; 6. Connecting arc pipe; 7. Scraper; 8. Ash collection box; 9. Side plate; 10. Arc-shaped scraper; 11. Mounting ring; 12. Rotating rod; 13. Connecting rib; 14. Limiting strip; 15. Slide groove. Detailed Implementation

[0023] 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.

[0024] like Figures 1 to 6 As shown, a pushboat-type tempering furnace for a tempering production line includes a furnace body 1 and a flue gas duct connected to the top of the furnace body 1. The flue gas duct consists of a vertical pipe 2, a connecting arc pipe 6, and a horizontal pipe 3. The bottom surface of the vertical pipe 2 is connected to the furnace body 1. Two scraper strips 7 are fitted into the inner wall of the vertical pipe 2. The two scraper strips 7 are symmetrically arranged. An installation ring 11 is fixedly installed on the top of the two scraper strips 7. A rotating rod 12 is fixedly connected to the axial position of the installation ring 11 through multiple connecting ribs 13. A motor 4 is fixedly installed at one end of the rotating rod 12 through the outer end of the connecting arc pipe 6. A receiving component for receiving accumulated ash is connected to the top surface of the inner wall of the furnace body 1.

[0025] like Figure 1 As shown, the push-boat type tempering furnace for the quenching and tempering production line in this utility model is similar in structure to existing oil-water separators. For example, patent publication number CN211005489U discloses a push-boat type tempering furnace for a gas-fired heating front shaft quenching and tempering production line. The main improvement of this utility model is that the vertical exhaust pipe on the furnace has a cleaning structure, such as... Figures 1 to 6 As shown, when the quenching production line push-boat type tempering furnace of this utility model is in use, the motor 4 can be started when the flue pipe needs to be cleaned. The output end of the motor 4 drives the rotating rod 12 to move, which drives the connecting rib 13 and the mounting ring 11 to rotate, and drives the two scrapers 7 at the bottom of the mounting ring 11 to rotate. When the two scrapers 7 are rotating, they can scrape off the accumulated dust on the inner wall of the vertical pipe 2 and let it fall into the receiving part to complete the dust cleaning.

[0026] It should be noted that the installation ring 11, rotating rod 12, scraper 7 and other structures are all made of high-temperature resistant materials to ensure their service life in the smoke exhaust duct.

[0027] The coordinated arrangement of motor 4, rotating rod 12, mounting ring 11, and scraper 7 allows for the cleaning of the inner wall of vertical pipe 2. Compared to traditional disassembly and cleaning methods, this design effectively simplifies the dust removal operation and reduces maintenance difficulty. Simultaneously, timely removal of accumulated dust from vertical pipe 2 prevents dust buildup from falling into the furnace tunnel; while dust in horizontal pipe 3 is less likely to seep back into the furnace tunnel, eliminating the need for frequent disassembly and cleaning.

[0028] It should be noted that the bottom end of the scraper 7 extends into the furnace wall of the heating furnace body 1, meaning that the flue gas passage is also cleaned by the scraper 7, which increases the cleaning area and improves the cleaning effect.

[0029] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the receiving component includes an ash collection box 8, with side plates 9 fixedly connected to both sides of the outer wall of the ash collection box 8. A sliding groove 15 is provided on the top surface of the inner wall of the heating furnace body 1, and the ash collection box 8 is slidably connected to the sliding groove 15 through the side plates 9 on both sides.

[0030] Specifically, in order to ensure that the ash does not fall into the furnace channel during the cleaning process, the ash collection box 8 can be pushed so that the end of the ash collection box 8 abuts against the inner wall of the end of the slide 15, so that the ash collection box 8 is just below the vertical tube 2 to collect the ash. Then, the ash collection box 8 can be pulled out like a drawer.

[0031] The bottom surface of the ash collection box 8 is further provided with a groove to facilitate the sliding operation of the ash collection box 8.

[0032] like Figure 5 As shown, the length of the chute 15 is twice the length of the ash collection box 8.

[0033] Specifically, by setting the length of the chute 15 to twice the length of the ash collection box 8, the ash collection box 8 can remain within the chute 15 without obstructing the exhaust gas from the exhaust pipe when not in use. When the exhaust pipe is in normal use, the exhaust channel can be exposed by sliding the ash collection box 8 backward, thus not affecting the normal exhaust of the exhaust pipe.

[0034] like Figure 6 As shown, the top surface of the slide 15 is fixedly connected to the limiting strip 14, and the dust collection box 8 abuts against both ends of the limiting strip 14.

[0035] Specifically, in order to ensure that the position of the ash collection box 8 does not easily move in either state, two limiting strips 14 are set in the middle of the slide chute 15. When the ash collection box 8 is receiving ash, the limiting strips 14 block the ash collection box 8 at one end close to the inside of the furnace body, thus restricting the ash collection box 8. Conversely, when the ash collection box 8 is not in use, the limiting strips 14 block the ash collection box 8, preventing it from easily moving to the bottom of the flue pipe.

[0036] The limit bar 14 has an arc-shaped cross section, so when the ash collection box 8 is pushed by the employee, the ash collection box 8 can smoothly pass the limit bar 14 and move in the slide 15.

[0037] like Figure 3 and Figure 4 As shown, an arc-shaped scraper 10 is fixedly connected to the top of the mounting ring 11, and the arc-shaped scraper 10 is in contact with the inner wall of the connecting arc tube 6.

[0038] Specifically, when the mounting ring 11 rotates, it drives the arc-shaped scraper 10 to clean and scrape the position of the connecting arc tube 6. Since the arc-shaped scraper 10 is arc-shaped, it can rotate around the axis of the rotating rod 12, which will not cause it to be unable to rotate.

[0039] like Figure 4 As shown, the outer walls of the scraper 7 are chamfered on both sides. The chamfered scraper 7 makes the outer walls thinner, resulting in a better scraping effect.

[0040] like Figure 4 As shown, brackets 5, which are connected to the heating furnace body 1, are fixedly installed on both sides of the outer wall of the motor 4. The brackets 5 ensure the stability of the motor 4, and since the motor 4 is a conventional drive source, it will not be described in detail here.

[0041] In addition, when it is necessary to disassemble and clean the structure such as the mounting ring 11 and scraper 10 inside the vertical tube 2, the motor 4 and bracket 5 can be disassembled. Since the output shaft of the motor 4 is conventionally detachably connected to the rotating rod 10 through the keyway, after separating the motor 4 from the rotating rod 10, the structure such as the mounting ring 11 and scraper 10 can be pulled out from the bottom surface of the vertical tube 2, that is, taken out from the furnace channel.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pushboat-type tempering furnace for a quenching and tempering production line, comprising a furnace body (1) and a flue gas duct connected to the top of the furnace body (1), characterized in that, The exhaust pipe consists of a vertical pipe (2), a connecting arc pipe (6), and a horizontal pipe (3). The bottom surface of the vertical pipe (2) is connected to the heating furnace body (1). Two scraper strips (7) are attached to the inner wall of the vertical pipe (2). The two scraper strips (7) are symmetrically arranged. An installation ring (11) is fixedly installed on the top of the two scraper strips (7). A rotating rod (12) is fixedly connected to the axial position of the installation ring (11) through multiple connecting ribs (13). A motor (4) is fixedly installed at the outer end of the rotating rod (12) through the connecting arc pipe (6). A receiving component for receiving ash is connected to the top surface of the inner wall of the heating furnace body (1).

2. The pushboat-type tempering furnace for a quenching and tempering production line according to claim 1, characterized in that, The receiving component includes an ash collection box (8), with side plates (9) fixedly connected to both sides of the outer wall of the ash collection box (8). A sliding groove (15) is provided on the top surface of the inner wall of the heating furnace body (1). The ash collection box (8) is slidably connected to the sliding groove (15) through the side plates (9) on both sides.

3. The boat-type tempering furnace for a quenching and tempering production line according to claim 2, characterized in that, The length of the chute (15) is twice the length of the ash collection box (8).

4. A pushboat-type tempering furnace for a quenching and tempering production line according to claim 2 or 3, characterized in that, The top surface of the chute (15) is fixedly connected to a limiting strip (14), and the dust collection box (8) abuts against both ends of the limiting strip (14).

5. A pushboat-type tempering furnace for a quenching and tempering production line according to claim 1, 2, or 3, characterized in that, An arc-shaped scraper (10) is fixedly connected to the top of the mounting ring (11), and the arc-shaped scraper (10) is in contact with the inner wall of the connecting arc tube (6).

6. The pushboat-type tempering furnace for a quenching and tempering production line according to claim 4, characterized in that, An arc-shaped scraper (10) is fixedly connected to the top of the mounting ring (11), and the arc-shaped scraper (10) is in contact with the inner wall of the connecting arc tube (6).

7. A pushboat-type tempering furnace for a quenching and tempering production line according to claim 1, 2, 3 or 6, characterized in that, The outer walls of the scraper (7) are chamfered on both sides.

8. The pushboat-type tempering furnace for a quenching and tempering production line according to claim 4, characterized in that, The outer walls of the scraper (7) are chamfered on both sides.

9. A pushboat-type tempering furnace for a quenching and tempering production line according to claim 5, characterized in that, The outer walls of the scraper (7) are chamfered on both sides.

10. A pushboat-type tempering furnace for a quenching and tempering production line according to claim 1, 2, 3, 6, 8, or 9, characterized in that, The motor (4) has brackets (5) fixedly installed on both sides of its outer wall, which are connected to the heating furnace body (1).

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