CN111074047A

CN111074047A - Quenching waste gas collecting device

Info

Publication number: CN111074047A
Application number: CN201911316355.0A
Authority: CN
Inventors: 张波; 王洪乐; 胡明; 马文; 文百旭
Original assignee: Jiangsu Xinnuo Yike Environmental Technology Co Ltd
Current assignee: Jiangsu Xinnuo Yike Environmental Technology Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-04-28

Abstract

The invention discloses a quenching waste gas collecting device which comprises a collecting cylinder, an air suction cover, an air suction pipe and a rotating arm. The collecting barrel comprises an outer barrel, an inner barrel and a table top, and the table top is positioned at the upper part of the outer barrel and is fixedly connected with the outer barrel. The inner cylinder penetrates through the table top and the outer cylinder, an upper opening of the inner cylinder is fixedly connected with the table top in a sealing mode, and a lower opening of the inner cylinder is fixedly connected with the outer cylinder in a sealing mode. The outer cylinder and the inner cylinder are of a hollow structure, the table top is of a hollow structure, and a plurality of air suction holes are uniformly distributed in the inner cylinder. The air suction pipes are fixedly arranged on two sides of the table board and are communicated with the table board through first communicating pipes. The air suction cover is positioned above the table board and comprises two cover bodies with the same structure, the cover bodies are rotatably connected with the air suction pipe through rotating arms, and the cover bodies are opened or closed through a driving device. The upper part of the air suction cover is provided with a sling opening. The device can efficiently collect waste gas generated by quenching of the workpiece.

Description

Quenching waste gas collecting device

Technical Field

The invention relates to the technical field of environment-friendly equipment, in particular to a quenching waste gas collecting device.

Background

According to different use requirements of various mechanical parts and tools, a machining factory generally improves rigidity, hardness, wear resistance, fatigue strength and toughness of workpieces by quenching, and the process of the machining factory is to put the workpieces with high temperature into quenching oil for rapid cooling. In the process that the workpiece stretches into quenching oil, a fire can appear and a large amount of waste gas is generated, and the waste gas is often directly discharged into a workshop to pollute air and damage the health of workers, so that the quenching oil is not in accordance with the environmental protection requirement.

Disclosure of Invention

The invention aims to provide a quenching waste gas collecting device which can realize the quick and efficient collection of waste gas generated by quenching.

In order to achieve the purpose, the quenching waste gas collecting device comprises a collecting cylinder, a gas suction cover, a gas suction pipe and a rotating arm, wherein the collecting cylinder comprises an outer cylinder, an inner cylinder and a table top, and the table top is positioned at the upper part of the outer cylinder and is fixedly connected with the outer cylinder. The inner cylinder penetrates through the table board and the outer cylinder, an upper opening of the inner cylinder is fixedly connected with the table board, and a lower opening of the inner cylinder is fixedly connected with the outer cylinder. The outer cylinder and the inner cylinder are of a hollow structure, the table top is of a hollow structure, and a plurality of air suction holes are uniformly distributed in the inner cylinder. The air suction pipes are positioned on two sides of the table board and are communicated with the table board through first communicating pipes. The air suction cover is positioned above the table board and comprises two cover bodies with the same structure, the cover bodies are rotatably connected with the air suction pipe through the rotating arms, and the cover bodies are opened or closed through a driving device. The upper part of the air suction cover is provided with a sling opening.

Furthermore, the rotating arm is hollow, one end of the rotating arm is communicated with the sling opening, and the other end of the rotating arm is communicated with the air suction pipe.

Further, the rotating arm is communicated with the cover body through a second communicating pipe.

Further, the air suction pipe comprises a rotatable pipe section and a fixed pipe section, and two ends of the rotatable pipe section are rotatably connected with the fixed pipe section through plane bearings.

Furthermore, a vent is arranged on the rotatable pipe section and fixedly connected with one end of the rotating arm; the first communicating pipe is arranged on the fixed pipe section.

Further, the driving device is a gear transmission mechanism, the gear transmission mechanism comprises a first gear and a second gear, the first gear is fixedly arranged on the rotatable pipe section, and the second gear is meshed with the first gear and connected with the speed reducer.

Further, the first gear is a semicircular gear.

Further, the outer cylinder is hollow cylindrical, the inner cylinder is hollow cylindrical, the table top is hollow cube in shape, and the air suction cover is cone in shape.

And furthermore, two closed faces of the cover body are provided with high-temperature-resistant sealing strips, and the closed positions of the cover body and the table top are provided with the high-temperature-resistant sealing strips.

The invention has the beneficial effects that: the invention seals the waste gas generated in the quenching process in the collecting cylinder and the air suction cover through the mutual matching of the collecting cylinder, the air suction cover, the air suction pipe and other parts, and fully sucks the waste gas into the air suction pipe through the air suction hole on the inner cylinder, the second communicating pipe and the hollow rotating arm, so that the waste gas is completely collected and safely discharged, thereby avoiding air pollution caused by disordered discharge of the waste gas, meeting the requirement of environmental protection and greatly improving the collection efficiency.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of the structure of FIG. 1;

FIG. 3 is a schematic view of the structure of the suction duct;

FIG. 4 is a top view of FIG. 3;

in the figure, 1-collecting cylinder, 101-outer cylinder, 102-inner cylinder, 102-1-suction hole, 103-table surface, 2-suction cover, 201-cover body, 3-suction pipe, 301-rotatable pipe section, 302-fixed pipe section, 4-rotating arm, 401-vent, 5-sling port, 6-first communicating pipe, 7-second communicating pipe, 8-gear transmission mechanism, 801-first gear, 802-second gear, 9-plane bearing.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

As shown in fig. 1-2, a quenching exhaust gas collecting device comprises a collecting cylinder 1, a suction hood 2, a suction pipe 3 and a rotating arm 4. The collecting cylinder 1 comprises an outer cylinder 101, an inner cylinder 102 and a table top 103, wherein the table top 103 is positioned at the upper part of the outer cylinder 101 and is connected with the outer cylinder 101 through bolts. The inner cylinder 102 penetrates the table top 103 and the outer cylinder 101, and an upper opening of the inner cylinder is hermetically welded with the table top 103, and a lower opening of the inner cylinder is hermetically welded with the outer cylinder 101. A hollow structure is arranged between the outer cylinder 101 and the inner cylinder 102, the table top 103 is a hollow structure, and a plurality of air suction holes 102-1 are uniformly distributed on the inner cylinder 102; the air suction pipes 3 are positioned at two sides of the table top 103, the air suction pipes 3 are communicated with the table top 103 through first communication pipes 6, and the air suction pipes 3 are connected with a centrifugal fan. The air suction cover 2 is positioned above the table top 103 and comprises two cover bodies 201 with the same structure, the cover bodies 201 are rotatably connected with the air suction pipe 3 through a rotating arm 4, and the cover bodies 201 are opened or closed through a driving device; the upper part of the air suction cover 2 is provided with a sling opening 5, the sling opening 5 is formed by folding two same groove-shaped steel plates, the sling opening can be of a hollow cylindrical shape according to the number of the steel wire ropes on site, and the size of the sling opening 5 is matched with the section of the steel wire ropes. The inner cylinder 102 is formed by rolling a punched plate, and the outer cylinder 101 is formed by carbon steel roll paper, and can be formed by rolling and folding one piece of carbon steel roll paper or formed by folding and stacking several pieces of carbon steel roll paper according to the height. The table top 103 is arranged to be a cubic structure, so that other parts can be conveniently installed and fixed, and the table top can be used as an overhauling and observing platform. Because the waste gas is heated and flees upwards and possibly leaks through the sling opening 5, the rotating arm 4 is internally hollow, one end of the rotating arm is communicated with the sling opening 5, and the other end of the rotating arm is communicated with the air suction pipe 3, so the waste gas at the sling opening 5 can be sucked into the air suction pipe 3 through the rotating arm 4. Since a large amount of exhaust gas is also stored in the cover body 201, the collection efficiency is improved by providing the second communication pipe 7 between the rotary arm 4 and the cover body 201. In the present embodiment, the outer cylinder 101 is formed in a hollow cylindrical shape, the inner cylinder 102 is formed in a hollow cylindrical shape, the outer shape of the top 103 is formed in a hollow cubic shape, and the outer shape of the suction cover 2 is formed in a conical shape. In order to improve the sealing performance of the device, high-temperature-resistant sealing strips are arranged on the closed surfaces of the two covers 201, and the closed part of the cover 201 and the table top 103 is provided with the high-temperature-resistant sealing strips.

As shown in fig. 3-4, the suction pipe 3 includes a rotatable pipe section 301 and a fixed pipe section 302, both ends of the rotatable pipe section 301 are rotatably connected to the fixed pipe section 302 through a flat bearing 9, the flat bearing 9 is respectively bolted to the rotatable pipe section 301 and the fixed pipe section 302 through flanges, and the rotatable pipe section 301 can rotate relative to the fixed pipe section 302. A vent 401 is provided on the rotatable pipe section 301, and the vent 401 is connected to one end of the rotating arm 4 by a flange bolt. The first communication pipe 6 is disposed on the fixed pipe section 302, wherein the number of the first communication pipe 6 is two, so as to improve the air suction capability. The driving device in this embodiment is a gear transmission mechanism 8, the gear transmission mechanism 8 includes a first gear 801 and a second gear 802, the first gear 801 is welded on the rotatable pipe section (301), and the second gear 802 is meshed with the first gear 801 and connected with a speed reducer. The second gear 802 and the speed reducer are fixed to the outer cylinder 101 by a bracket (not shown). Since the angle at which the cover 201 is opened is not large, the exhaust gas is prevented from escaping when the cover 201 is closed, and the rotation range of the rotation arm 4 is not large, the first gear 801 is formed as a semicircular gear. Of course, the driving device may be a pneumatic device, which may further increase the reaction speed of opening and closing the suction hood 2.

The working principle of the device is as follows: the collecting cylinder 1 is seated on the oil tank, and the opening of the oil tank is communicated with the inner cylinder 102. When the workpiece is hoisted above the oil tank, the air suction cover 2 is completely opened, the workpiece slowly falls into the inner cylinder 102, the air suction cover 2 is rapidly closed (the closing time is about 10 seconds), the workpiece continuously descends to enter the oil tank, and a large amount of waste gas is emitted. At this time, the interlayer between the outer cylinder 101 and the inner cylinder 102 forms a negative pressure space under the action of the negative pressure of the centrifugal fan, so that the suction force of the negative pressure of the fan is uniformly applied to each suction hole 102-1 on the inner cylinder 102, and the waste gas emitted from the suction holes 102-1 is sucked into the interlayer, enters the suction pipe 3 through the first communication pipe 6 and is safely discharged. Part of the exhaust gas rises under the action of heat, is captured by the suction hood 2, is sucked into the rotating arm 4 through the second communication pipe 7 and the port of the rotating arm 4 at the sling port 5, enters the suction pipe 3 again, and is discharged safely. Meanwhile, a closed vacuum space is formed between the inner cylinder 102 and the outer cylinder 101 under the action of negative pressure, flame generated when the workpiece is immersed in quenching liquid quickly consumes the original oxygen in the quenching liquid, the flame is extinguished quickly due to no external oxygen supplement, and the hidden danger of fire is reduced to zero by the collecting device.

In conclusion, the device ensures that the waste gas generated during workpiece quenching is almost completely limited in the collecting cylinder 1 and the air suction cover 2 and then is rapidly pumped away by the air suction pipe 3 through the mutual matching of the collecting cylinder 1, the air suction cover 2 and the air suction pipe 3, the waste gas can be efficiently collected, and the problem of air pollution caused by open air discharge is solved. In addition, the parts of the device are made of steel parts, so that the fireproof and explosion-proof effects can be achieved, and the potential safety hazard is also solved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes which can be made within the knowledge of those skilled in the art without departing from the gist of the present invention are within the scope of the claims of the present invention.

Claims

1. A quenching waste gas collection device is characterized in that: the device comprises a collecting cylinder (1), an air suction cover (2), an air suction pipe (3) and a rotating arm (4), wherein the collecting cylinder (1) comprises an outer cylinder (101), an inner cylinder (102) and a table top (103), and the table top (103) is positioned at the upper part of the outer cylinder (101) and is fixedly connected with the outer cylinder (101); the inner cylinder (102) penetrates through the table top (103) and the outer cylinder (101), an upper opening of the inner cylinder is fixedly connected with the table top (103), and a lower opening of the inner cylinder is fixedly connected with the outer cylinder (101); a hollow structure is arranged between the outer cylinder (101) and the inner cylinder (102), the table top (103) is of a hollow structure, and a plurality of air suction holes (102-1) are uniformly distributed in the inner cylinder (102); the air suction pipes (3) are positioned on two sides of the table top (103), and the air suction pipes (3) are communicated with the table top (103) through first communication pipes (6); the air suction cover (2) is positioned above the table top (103) and comprises two cover bodies (201) with the same structure, the cover bodies (201) are rotatably connected with the air suction pipe (3) through the rotating arms (4), and the cover bodies (201) are opened or closed through a driving device; the upper part of the air suction cover (2) is provided with a sling opening (5).

2. The quenching exhaust gas collecting device according to claim 1, wherein: the rotating arm (4) is hollow, one end of the rotating arm is communicated with the sling opening (5), and the other end of the rotating arm is communicated with the air suction pipe (3).

3. The quenching exhaust gas collecting device according to claim 2, wherein: the rotating arm (4) is communicated with the cover body (201) through a second communicating pipe (7).

4. The quenching exhaust gas collecting device according to claim 2, wherein: the air suction pipe (3) comprises a rotatable pipe section (301) and a fixed pipe section (302), and two ends of the rotatable pipe section (301) are rotatably connected with the fixed pipe section (302) through a plane bearing (9).

5. The quenching exhaust gas collecting device according to claim 4, wherein: a vent (401) is arranged on the rotatable pipe section (301), and the vent (401) is fixedly connected with one end of the rotating arm (4); the first communication pipe (6) is arranged on the fixed pipe section (302).

6. The quenching exhaust gas collecting device according to claim 4, wherein: the driving device is a gear transmission mechanism (8), the gear transmission mechanism (8) comprises a first gear (801) and a second gear (802), the first gear (801) is fixedly arranged on the rotatable pipe section (301), and the second gear (802) is meshed with the first gear (801) and is connected with a speed reducer.

7. The quenching exhaust gas collecting device according to claim 6, wherein: the first gear (801) is a semicircular gear.

8. The quenching exhaust gas collecting device according to any one of claims 1 to 7, wherein: the outer cylinder (101) is hollow cylindrical, the inner cylinder (102) is hollow cylindrical, the table top (103) is hollow cubic, and the air suction cover (2) is conical.

9. The quenching exhaust gas collecting device according to any one of claims 1 to 7, wherein: two be equipped with high temperature resistant sealing strip on the cover body (201) closing surface, the cover body (201) with mesa (103) closed department is equipped with high temperature resistant sealing strip.