Quenching oil tank opening fire and smoke exhausting device

Abstract

The application discloses a quenching oil tank notch fire extinguishing and smoke exhaust device, which comprises a fixing ring, a smoke collecting cover, a fire extinguishing mechanism and a negative pressure suction device, the fire extinguishing mechanism is arranged above the fixing ring in a split mode, a lifting drive for driving the fire extinguishing mechanism to move up and down is fixed on the top of the fixing ring, the smoke collecting cover is arranged on one side of the fire extinguishing mechanism, and at least one negative pressure suction device is fixed on the top of the fire extinguishing mechanism in a circumferential direction. Advantages: simple structure, good fire extinguishing and oil fume collecting effects; the lifting drive can drive the fire extinguishing mechanism, the negative pressure suction device and the smoke collecting cover to move up and down synchronously with quenching hooks, the fire extinguishing mechanism is utilized to extinguish fire and reduce oil fume during the process that a part is immersed in the quenching oil tank, the quenching hook cable is prevented from being roasted by fire, and the service life of equipment is prolonged; and the diffused oil fume can be collected by the negative pressure suction device during the process that the part is immersed in and moved out of the quenching oil tank, the oil fume is prevented from overflowing and polluting the environment, and the safety of operating personnel is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to quenching oil tank technical field, specifically to a kind of quenching oil tank orifice fire extinguishing smoke exhaust device. BACKGROUND

[0002] Quenching is the part of a certain carbon content is heated to higher than austenite temperature 30-50 ℃ state (about 800-900 ℃), put into water, mineral oil, brine and PAG quenching liquid cooling medium and so on fast cooling process;Purpose is to improve the hardness and wear resistance of metal workpiece, so it is widely used in various work, die, gauge and wear-resistant parts (such as gears, rolls, etc.). At present, commonly used quenching medium is mainly mineral oil, and the surface of the part will cause rapid combustion of mineral oil and oxygen after high temperature into oil, this process will continue until the part is completely into oil;And since the part is from the top of the oil tank into the oil tank, the part needs to be lifted into the oil tank by crane, so the quenching oil tank must be in open state during quenching, and there can be no smoke collection device and other devices above the oil tank. Therefore, the fire must be extinguished after the part is completely into the oil, and the flame is difficult to control effectively, and a large amount of oil smoke is generated, which causes environmental pressure to the company, and has a certain damage to the respiratory tract of the personnel being operated. And the crane cable for hanging the part needs to be roasted by the flame for about 20-30 seconds, which will cause slow damage to the cable of the quenching crane, reduce the service life of the crane cable, and cause potential safety risk. SUMMARY

[0003] The purpose of the present application is to provide a kind of quenching oil tank orifice fire extinguishing smoke exhaust device.

[0004] The present application is implemented by the following technical solutions: a quenching oil tank orifice fire extinguishing smoke exhaust device, comprising a fixed ring, a smoke collecting hood, a fire extinguishing mechanism and a negative pressure suction device, the fire extinguishing mechanism is divided and arranged above the fixed ring, a lifting drive for driving the fire extinguishing mechanism to rise and fall is fixed on the top of the fixed ring;One side of the fire extinguishing mechanism is provided with the smoke collecting hood, and at least one negative pressure suction device is fixed in the circumferential direction on the top of the fire extinguishing mechanism, the negative pressure suction device is in the shape of C as a whole, and each negative pressure suction device is distributed above the fire extinguishing mechanism in the form of annular array;The air outlet pipe of the negative pressure suction device is arranged inside the smoke collecting hood.

[0005] Further, the fire extinguishing mechanism comprises at least two first ring pipes arranged above and below, the first ring pipe comprises a solid pipe segment, a hollow pipe segment, a nozzle and an air inlet, the solid pipe segment and the hollow pipe segment are spliced into a ring shape, the smoke collecting hood is arranged on the outside of the solid pipe segment, a plurality of nozzles are installed on the inside of the hollow pipe segment opposite to the smoke collecting hood and arranged upwardly inclined, and the air inlet is communicated on the outside of the hollow pipe segment.

[0006] Further, it also includes a second ring pipe which is the same as the first ring pipe structure, and the second ring pipe is arranged below any of the first ring pipes.

[0007] Further, the nozzle is inclined upward by 20-40 degrees.

[0008] Further, the negative pressure suction device comprises a C-shaped sleeve, a partition plate, a fixing member, an air inlet pipe and an air outlet pipe, the C-shaped sleeve is fixed on the top of the fire extinguishing mechanism through a support, a through groove is formed in the inner ring of the C-shaped sleeve, the partition plate arranged along the length direction of the C-shaped sleeve is fixed in the C-shaped sleeve through the fixing member, the longitudinal section of the partition plate is in a C shape, and the opening direction of the partition plate is reversely arranged with the through groove; the outlet of the air inlet pipe is fixed in the opening of the partition plate at one end of the C-shaped sleeve, and the inlet of the air outlet pipe is fixed at the other end of the C-shaped sleeve.

[0009] Further, the air inlet pipe and the air outlet pipe are tangentially arranged at the two ends of the C-shaped sleeve.

[0010] Further, the upper and lower parts of the partition plate are fixedly connected with the inner wall of the C-shaped sleeve through a plurality of fixing members.

[0011] Further, a plurality of fixing members are fixed between the through groove and the side wall of the partition plate.

[0012] Further, the fixing member is a wing plate, and the wing plate is arranged in the radial direction of the C-shaped sleeve and inclined towards the air outlet pipe.

[0013] Further, the smoke collecting cover comprises an arc-shaped plate arranged in the longitudinal direction and a top plate fixed on the inner side of the top end of the arc-shaped plate; the bottom end of the arc-shaped plate is fixed on the outer side of the bottom end of the fire extinguishing mechanism through a fixing frame, and the top plate is arranged above the air outlet pipe; the smoke outlet is communicated with the outer side of the top end of the arc-shaped plate.

[0014] Further, the lifting drive is a hydraulic cylinder.

[0015] The advantages of the present application are as follows: simple structure, good fire extinguishing and oil fume collecting effect; the lifting drive can drive the fire extinguishing mechanism, the negative pressure suction device and the smoke collecting cover to synchronously lift with the quenching hook, the fire extinguishing mechanism is used to extinguish fire and reduce oil fume during the process that the part is immersed in the quenching oil tank, the quenching hook cable is prevented from being roasted by the flame, and the service life of the equipment is prolonged; the negative pressure suction device can collect the diffused oil fume during the process that the part is immersed in and removed from the quenching oil tank, the oil fume is prevented from overflowing and polluting the environment, and the safety of the operating personnel is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of Example 1.

[0017] Figure 2 It is a structural diagram of the negative pressure suction device in Example 1.

[0018] Figure 3 It is an A-A sectional view of Figure 2 .

[0019] Figure 4 It is a schematic diagram of the overall structure of the negative pressure suction device in Example 2.

[0020] Figure 5 It is a B-B sectional view of Figure 4 .

[0021] 1 - smoke hood, 11 - arc plate, 12 - top plate, 13 - smoke exhaust port, 2 - negative pressure suction device, 21 - C-shaped sleeve, 22 - partition plate, 23 - fixing piece, 24 - air inlet pipe, 25 - air outlet pipe, 26 - through groove, 3 - fire extinguishing mechanism, 31 - first ring, 32 - solid pipe section, 33 - hollow pipe section, 34 - nozzle, 35 - air inlet, 36 - second ring, 4 - support, 5 - fixing ring, 6 - lifting drive, 7 - connecting rod, 8 - fixing frame. DETAILED DESCRIPTION

[0022] In the description of the present application, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] Example 1: As shown in Figures 1 to 3 , the quenching oil tank opening fire extinguishing and smoke exhaust device includes a fixing ring 5, a smoke hood 1, a fire extinguishing mechanism 3 and a negative pressure suction device 2. The fire extinguishing mechanism 3 is separately arranged above the fixing ring 5, and a lifting drive 6 for driving the fire extinguishing mechanism 3 to rise and fall is fixed on the top of the fixing ring 5. The lifting drive 6 can drive the fire extinguishing mechanism 3 and the quenching hook to rise and fall synchronously, ensuring timeliness.

[0024] The fire extinguishing mechanism 3 comprises at least two first annular pipes 31 arranged one above the other, each first annular pipe 31 is fixed by a connecting rod 7, the first annular pipe 31 comprises a solid pipe section 32, a hollow pipe section 33, a nozzle 34 and an air inlet 35, the solid pipe section 32 and the hollow pipe section 33 are spliced into a ring shape, the solid pipe section 32 is arranged in a 140° area, and the hollow pipe section 33 is arranged in a 220° area. The smoke hood 1 is arranged outside the solid pipe section 32, a plurality of nozzles 34 are arranged on the inner side of the hollow pipe section 33 opposite the smoke hood 1 and are arranged upwardly inclined, the nozzles 34 are inclined upwardly by 20°-40°, and in the embodiment, the nozzles 34 are inclined upwardly by 30°; and the air inlet 35 is communicated with the outside of the hollow pipe section 33. After the gas enters the hollow pipe section 33 from the air inlet 35, the gas is sprayed in a diagonally upward direction through each nozzle 34. The fire extinguishing mechanism 3 further comprises a second annular pipe 36 which has the same structure as the first annular pipe 31, and the second annular pipe 36 is arranged below any first annular pipe 31. The second annular pipe 36 is fixed with the connecting rod 7. In the embodiment, there are two first annular pipes 31 and one second annular pipe 36, the second annular pipe 36 is arranged between the two first annular pipes 31, and the distance between the second annular pipe 36 and the two first annular pipes 31 is 100 mm; the air inlet 35 of the first annular pipe 31 is used for inputting compressed gas, and the air inlet 35 of the second annular pipe 36 is used for inputting compressed air.

[0025] One side of the fire extinguishing mechanism 3 is provided with the smoke hood 1, and two negative pressure suction devices 2 are fixed in the circumferential direction on the top of the fire extinguishing mechanism 3, and the smoke hood 1, the negative pressure suction device 2 and the fire extinguishing mechanism 3 can be driven to rise and fall synchronously with the quenching hook through the lifting drive 6; in the embodiment, the lifting drive 6 is a hydraulic cylinder. The negative pressure suction device 2 is in the shape of a C as a whole, and the two negative pressure suction devices 2 are distributed above the fire extinguishing mechanism 3 in the form of an annular array; the air outlet pipes 25 of the two negative pressure suction devices 2 are arranged inside the smoke hood 1. The negative pressure suction device 2 is arranged on both sides of the notch, on the one hand, the negative pressure suction device 2 can be used to suck the oil fume discharged from the notch into the smoke hood 1 and then discharge the oil fume to a subsequent treatment equipment through the smoke exhaust port 13; on the other hand, the notch is bypassed directly above, enough space is provided above the notch, and the quenching hook is convenient for controlling the parts to enter and exit the notch, so that the convenience of quenching operation is ensured.

[0026] The negative pressure suction device 2 comprises a C-shaped sleeve 21, a partition plate 22, a fixing member 23, an air inlet pipe 24 and an air outlet pipe 25. The C-shaped sleeve 21 is fixed on the top of the fire extinguishing mechanism 3 through the support 4. A through groove 26 is formed in the inner ring of the C-shaped sleeve 21. The partition plate 22 is arranged along the length direction of the C-shaped sleeve 21 and is fixed in the C-shaped sleeve 21 through the fixing member 23. The longitudinal section of the partition plate 22 is in a C shape. The opening direction of the partition plate 22 is reversely arranged with the through groove 26. The outlet of the air inlet pipe 24 is fixed in the opening of the partition plate 22 at one end of the C-shaped sleeve 21. The inlet of the air outlet pipe 25 is fixed at the other end of the C-shaped sleeve 21. The air inlet pipe 24 and the air outlet pipe 25 are tangentially arranged at the two ends of the C-shaped sleeve 21. The C-shaped sleeve 21 is divided into two cavities by the partition plate 22. The side of the partition plate 22 which is communicated with the air inlet pipe 24 is a flow cavity. The suction cavity is between the outside of the partition plate 22 and the through groove 26. The compressed air is sent into the flow cavity along the tangent direction through the air inlet pipe 24. The compressed air flows quickly along the flow cavity and finally flows out of the air outlet pipe 25. Because the gas in the flow cavity flows quickly, the pressure on the outside of the flow cavity becomes small. The oil fume in the slot is forced to enter the suction cavity through the through groove. The oil fume is finally quickly taken out into the smoke collecting hood 1 along with the compressed air, thereby solving the problem of the outward diffusion of the oil fume in the slot.

[0027] The upper and lower parts of the partition plate 22 are fixedly connected with the inner wall of the C-shaped sleeve 21 through a plurality of fixing members 23. The fixing member 23 is a wing plate which is arranged along the radial direction of the C-shaped sleeve 21 and is inclined towards the air outlet pipe 25. The wing plate fixes the partition plate 22 in the C-shaped sleeve 21 and guides the suction oil fume into the flow cavity.

[0028] The smoke collecting hood 1 comprises an arc-shaped plate 11 which is arranged in the longitudinal direction and a top plate 12 which is fixed on the inner side of the top end of the arc-shaped plate 11. The bottom end of the arc-shaped plate 11 is fixed on the outer side of the bottom end of the fire extinguishing mechanism 3 through the fixing frame 8. The top plate 12 is arranged above the air outlet pipe 25. The smoke outlet 13 is communicated with the top end of the arc-shaped plate 11. A circular inner chamfer is arranged at the connection between the top plate 12 and the arc-shaped plate 11. The compressed gas can be blown to the smoke collecting hood 1 to collect the smoke. In the embodiment, the diameter of the quenching oil tank is 2.5 meters. The height of the arc-shaped plate 11 is in the range of 1.0-1.8 m. The width of the top plate 12 is 20-40 cm.

[0029] Working principle: During the process of lowering the part into the quenching oil tank by the quenching hook, the lifting drive 6 drives the negative pressure suction device 2, the fire extinguishing mechanism 3, and the smoke collection hood 1 to descend synchronously until the bottom of the fire extinguishing mechanism 3 is flush with the opening of the quenching oil tank; as the part is immersed in the quenching oil tank, compressed gas is injected through the nozzle 34 of the first ring pipe 31 to isolate the mineral oil from oxygen and achieve fire extinguishing; after the part is completely immersed in the quenching oil tank, the compressed gas input is stopped, and compressed air is injected through the nozzle 34 of the second ring pipe 36 to blow away the oil fumes at the opening of the quenching oil tank. The fumes are swept into the fume hood 1. At this time, compressed air is used instead of compressed gas for purging, which can reduce nitrogen consumption and lower costs. The oil fumes that diffuse upward from the fire extinguishing mechanism are sent to the fume hood 1 by the suction of the negative pressure suction device 2. The oil fumes that reach the fume hood 1 are finally discharged into the oil fume purification system through the exhaust port 10. After quenching, the quenching hook lifts the parts upward, and at the same time, the lifting drive 6 controls the negative pressure suction device 2, the fire extinguishing mechanism 3 and the fume hood 1 to move upward as a whole. This can further collect the oil fumes that diffuse during the rising of the parts and reduce environmental pollution.

[0030] Example 2: Its overall structure is the same as that of Example 1, except that, as Figure 4 and Figure 5 As shown, several fasteners 23 are fixed between the through groove 26 and the side wall of the partition 22; that is, the only difference between Embodiment 2 and Embodiment 1 is that in Embodiment 1, the partition 22 is fixed to the C-shaped sleeve 21 by the fasteners 23 arranged vertically, while in Embodiment 2, the partition 22 is fixed to the C-shaped sleeve 21 by fixing the fasteners 23 between it and the through groove 26. In this embodiment, an air inlet is formed between two adjacent fasteners 23 and the through groove 26. After the fumes reach the outside of the partition 22 through the air inlet, they enter the interior of the C-shaped sleeve 21 from above and below the partition 22.

[0031] Traditional flue gas collection devices mostly collect flue gas through suction. A key characteristic of this method is that the suction power decreases rapidly with increasing distance between the pump and the flue gas source, limiting its application scenarios. The method employed in this application utilizes the high-speed flow of compressed gas to create negative pressure. Compressed gas is injected tangentially into the C-shaped sleeve 21. The C-shaped sleeve 21 provides constraint and guidance for the compressed gas, allowing it to flow rapidly and orderly within the semi-enclosed cavity formed by the sleeve (a special double-C interlocking structure). The high-speed flow of compressed gas within the C-shaped sleeve 21 creates a continuous and uniform negative pressure, drawing in the flue gas surrounding the sleeve and guiding it into the smoke collection hood 1. This structure ensures that the negative pressure generated throughout the C-shaped sleeve 21 is uniform, overcoming the problem of negative pressure attenuation in traditional methods, resulting in balanced and effective flue gas collection.

[0032] The negative pressure suction device is formed by two C-shaped tubes (C-shaped sleeve 21 and partition 22) with different sizes and same curvature, and forms a semi-closed cavity structure. The structure can form certain constraint and airflow guiding effect on the compressed gas injected in the tangential direction, ensures that the compressed gas can flow along the cavity of the negative pressure suction device 2, thereby forming a stable negative pressure state in the cavity, so that the flue gas outside the negative pressure suction device 2 can be continuously sucked into the negative pressure suction device 2 and flow with the compressed gas. In this process, part of the flue gas will escape. At this time, the flue gas passes through the fixed part 23 arranged in the form of scales, and vortexes are generated and sucked into the cavity of the negative pressure suction device 2. The fixed part 23 arranged in the form of scales causes vortexes in the flow process of the escaping gas flow, which can further improve the suction effect of the surrounding flue gas.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A quenching oil tank opening fire and smoke exhausting device, characterized by, The application relates to a fire extinguishing device, which comprises a fixing ring, a smoke collecting cover, a fire extinguishing mechanism and a negative pressure suction device, the fire extinguishing mechanism is arranged above the fixing ring in a split mode, a lifting drive for driving the fire extinguishing mechanism to lift up and down is fixed at the top of the fixing ring, one side of the fire extinguishing mechanism is provided with the smoke collecting cover, at least one negative pressure suction device is fixed in the circumferential direction at the top of the fire extinguishing mechanism, the negative pressure suction device is in a C shape as a whole, and each negative pressure suction device is distributed above the fire extinguishing mechanism in a ring array mode, the air outlet pipe of the negative pressure suction device is arranged in the interior of the smoke collecting cover, the negative pressure suction device comprises a C-shaped sleeve, a partition plate, a fixing piece, an air inlet pipe and an air outlet pipe, the C-shaped sleeve is fixed at the top of the fire extinguishing mechanism through a support, a through groove is formed in the inner ring of the C-shaped sleeve, the partition plate arranged in the length direction of the C-shaped sleeve is fixed in the interior of the C-shaped sleeve through the fixing piece, the longitudinal section of the partition plate is in a C shape, and the opening direction of the partition plate is reversely arranged with the through groove, the outlet of the air inlet pipe is fixed in the opening of the partition plate at one end of the C-shaped sleeve, and the inlet of the air outlet pipe is fixed at the other end of the C-shaped sleeve, the air inlet pipe and the air outlet pipe are tangentially arranged at the two ends of the C-shaped sleeve, a plurality of fixing pieces are fixed between the through groove and the side wall of the partition plate, the fixing piece is a wing plate, and the wing plate is arranged in the radial direction of the C-shaped sleeve and is inclined to the air outlet pipe.

2. The quench tank slot flame and smoke suppression apparatus of claim 1, wherein, The fire extinguishing mechanism comprises at least two first ring pipes arranged in the up-down direction, the first ring pipe comprises a solid pipe section, a hollow pipe section, a nozzle and an air inlet, the solid pipe section and the hollow pipe section are spliced into a ring shape, the smoke collecting cover is arranged on the outer side of the solid pipe section, a plurality of nozzles are arranged on the inner side of the hollow pipe section opposite to the smoke collecting cover, and the air inlet is communicated with the outer side of the hollow pipe section.

3. The quench tank slot smoke evacuation device of claim 2, wherein, The application further comprises a second ring pipe which is identical with the first ring pipe and is arranged below any first ring pipe.

4. The quench tank slot smoke evacuation device of claim 2, wherein, The nozzle is inclined upward by 20-40 degrees.

5. The quench tank slot flame and smoke suppression apparatus of claim 1, wherein, The upper and lower parts of the partition plate are fixedly connected with the inner wall of the C-shaped sleeve through a plurality of fixing pieces.

6. The quench tank slot smoke evacuation device of any of claims 1-5, wherein, The smoke collecting cover comprises an arc-shaped plate arranged in the longitudinal direction and a top plate fixed on the inner side of the top end of the arc-shaped plate, the bottom end of the arc-shaped plate is fixed on the outer side of the bottom end of the fire extinguishing mechanism through a fixing frame, the top plate is arranged above the air outlet pipe, and a smoke discharging port is communicated with the outer side of the top end of the arc-shaped plate.

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