A steel sintering machine flue gas purification device

Abstract

The present application belongs to the technical field of flue gas purification, and particularly relates to a steel sintering machine flue gas purification device, which comprises a pretreatment box, a dry filter, an activated carbon adsorption box, a fan and a combustion chamber, the pretreatment box, the dry filter, the activated carbon adsorption box, the fan and the combustion chamber are connected in pairs through connecting pipes, a filter disc is arranged in the pretreatment box, the pretreatment box removes impurity particles in flue gas through a spraying mechanism, and an anti-blocking mechanism is arranged on the pretreatment box. The steel sintering machine flue gas purification device uses the spraying mechanism, so that the water after spraying can be filtered by the filter disc to remove impurities, and the water after spraying can be reused subsequently, meanwhile, the output shaft of the motor rotates to drive the hollow shaft to rotate the spraying pipe, the spraying range is improved, the particle impurities in the flue gas are removed, and the pretreatment effect of the flue gas is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas purification, in particular to a steel sintering machine flue gas purification device. BACKGROUND

[0002] Steel production consumes a large amount of fuel and ore in its hot working process, while emitting a large amount of air pollutants. The flue gas generated in the sintering process needs to be treated by a flue gas purification device before it can be discharged.

[0003] At present, the traditional steel sintering machine flue gas purification device generally needs to spray pretreatment on the flue gas to remove most of the particulate impurities in the flue gas, and then purify the flue gas by dry filtration, activated carbon adsorption and combustion discharge. However, in the process of spraying pretreatment on the flue gas, the sprayed water is discharged together with the particulate impurities. When the sprayed water needs to be reused later, additional process is needed to treat the recovered water. In order to reduce the process and improve the treatment effect, a steel sintering machine flue gas purification device is proposed. SUMMARY

[0004] The main purpose of the present application is to provide a steel sintering machine flue gas purification device which can solve the problems raised in the background art.

[0005] To achieve the above purpose, the steel sintering machine flue gas purification device proposed by the present application comprises a pretreatment box, a dry filter, an activated carbon adsorption box, a fan and a combustion chamber, the pretreatment box, the dry filter, the activated carbon adsorption box, the fan and the combustion chamber are connected in pairs by connecting pipes, the inside of the pretreatment box is provided with a filter disc, the pretreatment box removes impurity particles in the flue gas through a spraying mechanism, the pretreatment box is provided with an anti-blocking mechanism, and the spraying mechanism comprises:

[0006] A water tank is connected to the water inlet pipe through a water pump, and an auxiliary collection assembly is arranged at the end of the water inlet pipe away from the water tank;

[0007] A motor is fixedly connected to the output shaft of the motor;

[0008] A drain pipe is connected to the pretreatment box, and the end of the drain pipe away from the pretreatment box is connected to the water tank.

[0009] Preferably, the auxiliary collecting assembly comprises a connecting head fixed with the water inlet pipe, a hollow shaft rotatably connected to the bottom of the connecting head, a large gear fixedly connected to the outer wall of the hollow shaft, a small gear engaged with the large gear, a spray pipe and an arc plate fixedly connected to the outer wall of the hollow shaft, and the spray pipe being in communication with the hollow shaft.

[0010] Preferably, the outer wall of the hollow shaft is fixedly connected with a driving gear, the driving gear is engaged with a driven gear, the driven gear is engaged with a toothed ring, the lower side of the toothed ring is fixedly connected with a connecting rod, and the end of the connecting rod away from the toothed ring is fixedly connected with the filter disc.

[0011] Preferably, the top of the pretreatment box is detachably connected with a cover, an air inlet pipe is formed in the outer wall of the pretreatment box, and a fixing ring is fixedly connected to the inner wall of the pretreatment box.

[0012] Preferably, the motor is fixedly connected to the cover, the filter disc is rotatably connected to the fixing ring, and the height of the air inlet pipe is lower than the height of the spray pipe.

[0013] Preferably, the toothed ring is rotatably connected to the lower side of the cover, and the driven gear is rotatably connected to the lower side of the cover through a connecting shaft.

[0014] Preferably, the anti-blocking mechanism comprises a disc fixedly connected to the bottom of the hollow shaft, a hinged rod hinged to the lower side of the disc, a piston rod hinged to the end of the hinged rod away from the disc, and the piston rod being piston-connected to an air cylinder, and the air cylinder being in communication with a one-way air inlet and a one-way air outlet pipe.

[0015] Preferably, the one-way exhaust pipe is communicated with a straight pipe through a three-way valve, one end of the straight pipe away from the three-way valve is communicated with a spray cavity, the spray cavity is fixedly connected to the lower side of the fixed ring, through the use of the three-way valve and the straight pipe, the air in the air cylinder can enter the straight pipe after the three-way valve is opened, and then is sprayed from the spray cavity, so that the gas impacts the bottom of the filter disc from bottom to top, further preventing the filter disc from being blocked.

[0016] Preferably, the air cylinder is fixedly connected to the outer wall of the pretreatment box, and the piston rod penetrates through and is in sealing connection with the outer wall of the pretreatment box.

[0017] Preferably, the lower side of the spray cavity is fixedly connected with a support, the support is rotatably connected with a swing rod, one end of the swing rod close to the filter disc is fixedly connected with an elastic block, one end of the swing rod away from the elastic block is provided with a sliding groove, a round rod is slidably connected in the sliding groove, and the round rod is fixedly connected to the outer wall of the piston rod.

[0018] The present application provides a steel sintering machine flue gas purification device.

[0019] (1) The steel sintering machine flue gas purification device uses the spraying mechanism, so that the impurities in the sprayed water can be filtered out by the filter disc during the pretreatment of the flue gas, facilitating the reuse of the sprayed water, and in this process, the output shaft of the motor rotates to drive the hollow shaft to rotate the spraying pipe, thereby improving the spraying range, fully removing the particulate impurities in the flue gas, improving the pretreatment effect of the flue gas, and simplifying the process while improving the water resource utilization rate without additional process purification and recycling of water.

[0020] (2) The steel sintering machine flue gas purification device uses the spraying mechanism, so that the particulate impurities on the filter disc can be swept during the rotation of the hollow shaft and the arc-shaped plate, preventing the particulate impurities from accumulating on the filter disc, and cooperating with the use of the anti-blocking mechanism, so that the air in the air cylinder can be discharged from the one-way exhaust pipe, the external air enters from the one-way air inlet, and after the air is discharged from the one-way exhaust pipe, it can impact the air rising below, slow down the discharge speed of the flue gas entering the pretreatment box from the inlet pipe, and improve the effect of spraying and removing solid particulate impurities.

[0021] (3) The flue gas purification device of the steel sintering machine uses a three-way valve and a straight pipe in the anti-clogging mechanism so that after the three-way valve is opened, the air discharged from the air cylinder can enter the straight pipe and then be sprayed out from the spray chamber, so that the gas impacts the bottom of the filter plate from bottom to top, further preventing the filter plate from clogging.

[0022] (4) The flue gas purification device of the steel sintering machine uses the swing rod and elastic block of the anti-clogging mechanism. During the reciprocating motion of the piston rod, the swing rod swings around the rotation point of the support, which drives the elastic block to knock and vibrate the filter plate, preventing the impurities accumulated on the filter plate from clogging and further preventing the filter plate from clogging. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of a portion of the three-dimensional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of a partial three-dimensional sectional structure of the present invention. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of the filter disc and auxiliary collection components of the present invention;

[0028] Figure 5 This is a schematic diagram of a partial three-dimensional sectional structure of the present invention. Figure 2 ;

[0029] Figure 6 For the present invention Figure 5 Schematic diagram of structure A in the middle;

[0030] Figure 7 For the present invention Figure 5 Schematic diagram of structure B in the middle;

[0031] Figure 8 This is a schematic diagram of the anti-clogging mechanism of the present invention;

[0032] Figure 9 This is a cross-sectional view of the anti-clogging mechanism of the present invention;

[0033] Figure 10 For the present invention Figure 9Schematic view of middle C structure;

[0034] Figure 11 Prior structure diagram of the present application.

[0035] Explanation of reference numerals:

[0036] Preprocessing box; 2, dry filter; 3, activated carbon adsorption box; 4, fan; 5, combustion chamber; 6, filter disc; 7, spraying mechanism; 8, anti-blocking mechanism;

[0037] Water tank; 72, water inlet pipe; 73, auxiliary collection assembly; 74, motor; 75, pinion; 76, drain pipe;

[0038] Connecting head; 732, hollow shaft; 733, large gear; 7321, spraying pipe; 734, arc plate; 735, driving gear; 736, driven gear; 737, gear ring; 738, connecting rod;

[0039] Cover body; 102, air inlet pipe; 103, fixing ring;

[0040] 81, disc; 82, hinged rod; 83, piston rod; 84, air cylinder; 85, one-way air inlet; 86, one-way exhaust pipe; 87, three-way valve; 88, straight pipe; 89, spray cavity; 811, support; 810, swing rod; 812, elastic block; 813, sliding groove; 814, round rod.

[0041] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0043] Please refer to Figures 1-10The present application provides a kind of steel sintering machine flue gas purification device, including preprocessing box 1, dry filter 2, activated carbon adsorption box 3, fan 4 and combustion chamber 5, the top of preprocessing box 1 is detachably connected with cover 101, air inlet pipe 102 is formed on the outer wall of preprocessing box 1, fixed ring 103 is fixedly connected on the inner wall of preprocessing box 1, flue gas enters preprocessing box 1 from air inlet pipe 102, preprocessing box 1 carries out spray pretreatment to flue gas, removes most of the particulate impurities in flue gas, then flue gas is purified by dry filtration, activated carbon adsorption and combustion discharge, preprocessing box 1, dry filter 2, activated carbon adsorption box 3, fan 4 and combustion chamber 5 are connected by connecting pipe, filter disc 6 is arranged in preprocessing box 1, and preprocessing box 1 removes impurity particles in flue gas by spraying mechanism 7.

[0044] In an embodiment of the application, the spraying mechanism 7 includes a water tank 71, a motor 74 and a drain pipe 76, the water tank 71 is connected to the water inlet pipe 72 by a water pump, the water inlet pipe 72 is provided with an auxiliary collection assembly 73 at an end away from the water tank 71, the output shaft of the motor 74 is fixedly connected with a pinion 75, the drain pipe 76 is connected to the preprocessing box 1, and the end of the drain pipe 76 away from the preprocessing box 1 is connected to the water tank 71, the auxiliary collection assembly 73 includes a connecting head 731, the connecting head 731 is fixedly connected to the water inlet pipe 72, the bottom of the connecting head 731 is rotatably connected with a hollow shaft 732, the outer wall of the hollow shaft 732 is fixedly connected with a large gear 733, the large gear 733 is engaged with the pinion 75, the outer wall of the hollow shaft 732 is fixedly connected with a spraying pipe 7321 and an arc plate 734, the spraying pipe 7321 is connected to the hollow shaft 732, the motor 74 is fixedly connected to the cover 101, the filter disc 6 is rotatably connected to the fixed ring 103, the height of the air inlet pipe 102 is lower than the height of the spraying pipe 7321, the output shaft of the motor 74 is rotated to drive the pinion 75 to rotate, and then drive the large gear 733 to rotate, so that the hollow shaft 732 rotates, in the process, the hollow shaft 732 rotates relative to the connecting head 731, so that the water in the water inlet pipe 72 can enter the hollow shaft 732 normally, and then be sprayed out from the spraying pipe 7321, to realize spraying of the flue gas and remove the particulate impurities in the flue gas, at the same time, the hollow shaft 732 can drive the spraying pipe 7321 to rotate, to improve the spraying range and sufficiently remove the particulate impurities in the flue gas, the particulate impurities are filtered by the filter disc 6, the discharged water flows back to the water tank 71 through the drain pipe 76, to facilitate reuse of the spraying water, without additional process to purify and recycle the water, to simplify the process and improve water resource utilization rate, and in the process of the hollow shaft 732 driving the arc plate 734 to rotate, the particulate impurities on the filter disc 6 can be swept, to prevent the particulate impurities from accumulating on the filter disc 6.

[0045] Further, the outer wall of the hollow shaft 732 is fixedly connected with a driving gear 735, the driving gear 735 is engaged with a driven gear 736, the driven gear 736 is engaged with a tooth ring 737, the lower side of the tooth ring 737 is fixedly connected with a connecting rod 738, the end of the connecting rod 738 away from the tooth ring 737 is fixed with the filter disc 6, the tooth ring 737 is rotatably connected to the lower side of the cover body 101, the driven gear 736 is rotatably connected to the lower side of the cover body 101 through a connecting shaft, through the rotation of the hollow shaft 732, the driving gear 735 can be driven to rotate, and then the driven gear 736 is driven to rotate, so that the tooth ring 737 drives the connecting rod 738 to rotate, and then the filter disc 6 is driven to rotate, so that the particulate impurities can roll, and further prevent accumulation and adhesion.

[0046] In use, first, the flue gas is introduced into the pretreatment box 1 from the inlet pipe 102, at the same time, the water pump and the motor 74 are started, the water in the water tank 71 enters the water inlet pipe 72, the output shaft of the motor 74 rotates to drive the pinion 75 to rotate, and then the large gear 733 is driven to rotate to make the hollow shaft 732 rotate, in this process, the hollow shaft 732 rotates relative to the connecting head 731, and then the water in the water inlet pipe 72 can normally enter the hollow shaft 732, and then is sprayed from the spray pipe 7321, realizing the spraying of the flue gas, removing the particulate impurities in the flue gas, at the same time, the hollow shaft 732 can drive the spray pipe 7321 to rotate, sufficiently removing the particulate impurities in the flue gas, the particulate impurities are filtered by the filter disc 6, the discharged water flows back to the water tank 71 through the drain pipe 76, at the same time, the hollow shaft 732 drives the arc-shaped plate 734 to rotate, and then the particulate impurities on the filter disc 6 are swept, the rotation of the hollow shaft 732 drives the driving gear 735 to rotate, and then the driven gear 736 is driven to rotate, so that the tooth ring 737 drives the connecting rod 738 to rotate, and then the filter disc 6 is driven to rotate, so that the particulate impurities can roll, preventing the particulate impurities from accumulating on the filter disc 6.

[0047] In another embodiment of the present application, the pretreatment box 1 is provided with an anti-blocking mechanism 8, the anti-blocking mechanism 8 comprises a disc 81 fixedly connected to the bottom of the hollow shaft 732, the lower side of the disc 81 is hingedly connected with a hinged rod 82, the end of the hinged rod 82 away from the disc 81 is hingedly connected with a piston rod 83, the piston rod 83 is piston-connected in a gas cylinder 84, the gas cylinder 84 is communicated with a one-way air inlet 85 and a one-way air outlet pipe 86, the one-way air outlet pipe 86 is communicated with a straight pipe 88 through a three-way valve 87, the end of the straight pipe 88 away from the three-way valve 87 is communicated with a spray cavity 89, the spray cavity 89 is fixedly connected to the lower side of the fixed ring 103, the gas cylinder 84 is fixedly connected to the outer wall of the pretreatment box 1, the piston rod 83 penetrates through the outer wall of the pretreatment box 1 and is sealingly connected with the outer wall of the pretreatment box 1, the disc 81 is driven to rotate by the hollow shaft 732, thereby driving the hinged rod 82 to move, so that the piston rod 83 reciprocatingly moves in the gas cylinder 84, so that the air in the gas cylinder 84 can be discharged from the one-way air outlet pipe 86, the air from the outside enters from the one-way air inlet 85, and after the air is discharged from the one-way air outlet pipe 86, the air can impact the air rising from below, slow down the discharging speed of the flue gas entering the pretreatment box 1 from the inlet pipe 102, improve the effect of spraying to remove solid particle impurities, and when the three-way valve 87 is opened, the air discharged from the gas cylinder 84 can enter the straight pipe 88, and then be sprayed from the spray cavity 89, so that the gas impacts the bottom of the filter disc 6 from bottom to top, further preventing the filter disc 6 from being blocked.

[0048] Further, the lower side of the spray cavity 89 is fixedly connected with a bracket 811, the bracket 811 is rotatably connected with a swing rod 810, the end of the swing rod 810 close to the filter disc 6 is fixedly connected with an elastic block 812, the end of the swing rod 810 away from the elastic block 812 is provided with a sliding groove 813, the sliding groove 813 is slidingly connected with a round rod 814, the round rod 814 is fixedly connected to the outer wall of the piston rod 83, through the reciprocating movement of the piston rod 83, the swing rod 810 swings around the rotation point of the bracket 811, drives the elastic block 812 to knock and vibrate the filter disc 6, prevents the accumulated impurities on the filter disc 6 from blocking, and further prevents the filter disc 6 from being blocked.

[0049] In use, the hollow shaft 732 is driven to rotate by the motor 74, so that the disc 81 rotates, and further drives the articulated rod 82 to move, so that the piston rod 83 reciprocates in the air cylinder 84, and the air in the air cylinder 84 can be discharged from the one-way exhaust pipe 86, and the air from the one-way inlet 85 enters, and after the air is discharged from the one-way exhaust pipe 86, the rising air below can be impacted, the exhaust speed of the flue gas entering the intake pipe 102 from the pretreatment box 1 is slowed down, the air discharged from the air cylinder 84 can enter the straight pipe 88 by opening the three-way valve 87, and then be sprayed from the spray cavity 89, so that the gas impacts the bottom of the filter disc 6 from bottom to top, further preventing the filter disc 6 from being blocked, and in the reciprocating movement of the piston rod 83, the swing rod 810 swings around the rotation point of the support 811, drives the elastic block 812 to knock and vibrate the filter disc 6, further preventing the filter disc 6 from being blocked.

[0050] It should be noted that the above-mentioned electrical components are all products of the prior art, and the skilled person in the art selects, installs and completes the circuit debugging operation according to the needs of use, ensures that each electrical appliance can work normally, and the components are all general standard components or components known to the skilled person in the art, the structure and principle of which can be known by the skilled person through technical manuals or through conventional experimental methods, and here is not limited in detail.

[0051] The whole use process of the present application is: first, the flue gas is introduced into the pretreatment box 1 from the intake pipe 102, at the same time, the water pump and the motor 74 are started, the water in the water tank 71 enters the water inlet pipe 72, the output shaft of the motor 74 rotates, drives the pinion 75 to rotate, and further drives the gear 733 to rotate, so that the hollow shaft 732 rotates, in this process, the hollow shaft 732 rotates relative to the connecting head 731, so that the water in the water inlet pipe 72 can normally enter the hollow shaft 732, and then be sprayed from the spray pipe 7321, realizing the spraying of the flue gas, removing the particulate impurities in the flue gas, at the same time, the hollow shaft 732 can drive the spray pipe 7321 to rotate, and the particulate impurities in the flue gas are removed, and the particulate impurities are filtered by the filter disc 6, and the discharged water flows back to the water tank 71 through the drain pipe 76;

[0052] At the same time, the hollow shaft 732 drives the arc plate 734 to rotate, so that the particulate impurities on the filter disc 6 can be swept, the rotation of the hollow shaft 732 drives the driving gear 735 to rotate, and further drives the driven gear 736 to rotate, so that the gear ring 737 drives the connecting rod 738 to rotate, and further drives the filter disc 6 to rotate, so that the particulate impurities can roll, preventing the particulate impurities from accumulating.

[0053] Meanwhile, during the rotation of the hollow shaft 732, the disc 81 rotates, and further drives the hinged rod 82 to move, so that the piston rod 83 reciprocates in the air cylinder 84, and the air in the air cylinder 84 can be discharged from the one-way exhaust pipe 86, and the external air enters from the one-way air inlet 85, and after the air is discharged from the one-way exhaust pipe 86, the air can impact the air rising below, slow down the exhaust speed of the flue gas entering the intake pipe 102 from the pretreatment box 1, and the discharged air in the air cylinder 84 can enter the straight pipe 88 by opening the three-way valve 87, and then be sprayed from the spray cavity 89, so that the gas impacts the bottom of the filter disc 6 from bottom to top, and further prevents the filter disc 6 from being blocked;

[0054] Meanwhile, when the piston rod 83 reciprocates, the swing rod 810 swings around the rotation point of the support 811, drives the elastic block 812 to knock and vibrate the filter disc 6, and further prevents the filter disc 6 from being blocked.

[0055] The pretreated flue gas is further purified by dry filtration, activated carbon adsorption and combustion emission.

[0056] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A steel sintering machine flue gas purification device, comprising a pretreatment box (1), a dry filter (2), an activated carbon adsorption box (3), a fan (4) and a combustion chamber (5), characterized in that: The preprocessing box (1), dry filter (2), activated carbon adsorption box (3), fan (4) and combustion chamber (5) are communicated by connecting pipe two by two, the inside of preprocessing box (1) is provided with filter disc (6), preprocessing box (1) removes the impurity particles in flue gas by spraying mechanism (7), the top of preprocessing box (1) is provided with anti-blocking mechanism (8), spraying mechanism (7) includes: Water tank (71), the water tank (71) is communicated with the water inlet pipe (72) by water pump, the one end of water inlet pipe (72) away from water tank (71) is provided with auxiliary collection assembly (73); Motor (74), the output shaft of motor (74) is fixedly connected with pinion (75); Drain pipe (76), the drain pipe (76) is communicated with preprocessing box (1), the one end of drain pipe (76) away from preprocessing box (1) is communicated with water tank (71), the inner wall of preprocessing box (1) is fixedly connected with fixed ring (103); Auxiliary collection assembly (73) includes connecting head (731), the connecting head (731) is fixed with water inlet pipe (72), the bottom of connecting head (731) is rotatably connected with hollow shaft (732), the outer wall of hollow shaft (732) is fixedly connected with large gear (733), the large gear (733) is engaged with pinion (75), the outer wall of hollow shaft (732) is fixedly connected with spray pipe (7321) and arc plate (734), the spray pipe (7321) is communicated with hollow shaft (732); The outer wall of hollow shaft (732) is fixedly connected with driving gear (735), the driving gear (735) is engaged with driven gear (736), the driven gear (736) is engaged with gear ring (737), the lower side of gear ring (737) is fixedly connected with connecting rod (738), the one end of connecting rod (738) away from gear ring (737) is fixed with filter disc (6); Anti-blocking mechanism (8) includes disc (81), the disc (81) is fixedly connected at the bottom of hollow shaft (732), the lower side of disc (81) is hingedly connected with hinge rod (82), the one end of hinge rod (82) away from disc (81) is hingedly connected with piston rod (83), the piston rod (83) is connected in air cylinder (84), the air cylinder (84) is communicated with one-way air inlet (85) and one-way exhaust pipe (86); One-way exhaust pipe (86) is communicated with straight pipe (88) through three-way valve (87), the one end of straight pipe (88) away from three-way valve (87) is communicated with spray cavity (89), the spray cavity (89) is fixedly connected at the lower side of fixed ring (103).

2. A steel sintering machine flue gas cleaning device according to claim 1, characterized in that: The top of preprocessing box (1) is detachably connected with cover body (101), the outer wall of preprocessing box (1) is provided with air inlet pipe (102).

3. A steel sintering machine flue gas cleaning device according to claim 2, characterized in that: The motor (74) is fixedly connected on the cover body (101), the filter disc (6) is rotatably connected on the fixed ring (103), the height of air inlet pipe (102) is lower than the height of spray pipe (7321).

4. A steel sintering machine flue gas cleaning device according to claim 3, characterized in that: The tooth ring (737) is rotationally connected to the lower side of the cover body (101), and the driven gear (736) is rotationally connected to the lower side of the cover body (101) through a connecting shaft.

5. A device for cleaning flue gas of a steel sintering machine according to claim 1, characterized in that: The air cylinder (84) is fixedly connected to the outer wall of the pretreatment box (1), and the piston rod (83) penetrates through the outer wall of the pretreatment box (1) and is sealingly connected to the outer wall of the pretreatment box (1).

6. A steel sintering machine flue gas cleaning device according to claim 5, characterized in that: The lower side of the spray cavity (89) is fixedly connected with a support (811), the support (811) is rotationally connected with a swing rod (810), one end of the swing rod (810) close to the filter disc (6) is fixedly connected with an elastic block (812), one end of the swing rod (810) away from the elastic block (812) is provided with a sliding groove (813), the sliding groove (813) is slidingly connected with a round rod (814), and the round rod (814) is fixedly connected to the outer wall of the piston rod (83).

Images