A device for treating waste gas after catalytic oxidation reaction of nitrogen oxides

Abstract

The invention discloses an exhaust gas treatment device after a catalytic oxidation reaction of nitrogen oxides, and relates to the technical field of exhaust gas treatment. The exhaust gas treatment device after a catalytic oxidation reaction of nitrogen oxides comprises a filter cartridge and a purification box, wherein a filter screen is arranged in the filter cartridge, and the upper part of the filter cartridge is connected to the bottom of the purification box through a delivery pipe, a nitrogen oxide sensor and an air outlet pipe are installed on the top of the purification box, a two-way valve is installed on the air outlet pipe, a second air pump is installed on the purification box, an input end of the second air pump is connected to the other output end of the two-way valve through an air intake pipe, and an output end of the second air pump is connected to the bottom of the purification box through a return air pipe, impurities in the exhaust gas are intercepted and separated by the filter screen in the filter cartridge, and whether the upwelling airflow contains nitrogen oxides can be detected by the nitrogen oxide sensor, and direct discharge of the exhaust gas or circulating purification treatment of the exhaust gas can be achieved according to the detection result.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a device for treating waste gas after catalytic oxidation reaction of nitrogen oxides. Background Art

[0002] The catalytic oxidation reaction of nitrogen oxides refers to the reaction of nitrogen oxides with oxygen through the action of a catalyst to generate other nitrogen oxides or nitrogen and water. This reaction is usually carried out under certain temperature and pressure conditions. Commonly used catalysts include metals such as platinum and palladium. The catalytic oxidation reaction of nitrogen oxides is widely used in industry, mainly for treating exhaust gases containing nitrogen oxides. Through this reaction, harmful nitrogen oxides can be converted into harmless nitrogen and water, reducing pollution to the environment. For example, this catalytic oxidation reaction is often used in automobile exhaust treatment systems to reduce nitrogen oxide emissions. Moreover, with the continuous progress of society, the scale of industrial production has also continued to increase. In many industrial production processes, waste gas, such as nitrogen oxide waste gas, will be generated. If it is directly discharged, it will pollute the environment. Therefore, it is necessary to use an exhaust gas treatment device to purify it.

[0003] The existing waste gas treatment device is not ideal for removing impurities in the waste gas during the waste gas treatment process, and the waste gas purification effect is not thorough, so that the exhaust gas still contains nitrogen oxides, which will pollute the air and have a negative impact on the environment. Summary of the invention

[0004] The object of the present invention is to provide a device for treating exhaust gas after catalytic oxidation reaction of nitrogen oxides, so as to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: the exhaust gas treatment device after the catalytic oxidation reaction of nitrogen oxides comprises a filter cartridge and a purification box, a first air pump is installed on the filter cartridge, an air collecting pipe is installed on the input end of the first air pump, and the output end of the first air pump is connected to the lower part of the filter cartridge through an air supply pipe, a filter screen is arranged in the filter cartridge, the upper part of the filter cartridge is connected to the bottom of the purification box through a supply pipe, a nitrogen oxide sensor and an air outlet pipe are installed on the top of the purification box, a two-way valve is installed on the air outlet pipe, an exhaust pipe is installed on one output end of the two-way valve, a second air pump is installed on the purification box, the input end of the second air pump is connected to the other output end of the two-way valve through an air intake pipe, and the output end of the second air pump is connected to the bottom of the purification box through a return air pipe, and the nitrogen oxide sensor and the air outlet pipe are installed on the top of the purification box. The chemical sensor is electrically connected to the two-way valve. When it is necessary to treat the exhaust gas after the nitrogen oxide reaction, the first air pump is started, and the exhaust gas can be transported to the filter cartridge through the gas collecting pipe and the gas delivery pipe. The impurities in the exhaust gas can be intercepted and separated by the filter mesh in the filter cartridge, and then the filtered gas is sent to the purification box through the delivery pipe, and the nitrogen oxides in the exhaust gas are absorbed by the purification box. At the same time, the nitrogen oxide sensor is used to detect whether the upflowing air flow contains nitrogen oxides. If there are no nitrogen oxides, it can be directly discharged through the outlet pipe and the exhaust pipe. If there are nitrogen oxides, the second air pump is controlled to operate, so that the two-way valve closes the exhaust pipe outlet and opens the intake pipe outlet, and the exhaust gas can be returned to the purification box through the intake pipe and the return pipe, so that the circulating purification treatment of the exhaust gas can be realized, thereby improving the purification effect of the exhaust gas.

[0006] As an optimal technical solution, a waste valve is installed at the bottom of the filter cartridge, which is convenient for opening the waste valve after the exhaust gas treatment is completed to discharge impurities in the filter cartridge. The delivery pipe and the return air pipe are both one-way pipes.

[0007] As a preferred technical solution, the filter cartridge and the purification box are provided with a purification enhancement component and a purification utilization component, and the operation of the purification enhancement component provides driving force for the purification utilization component.

[0008] As a preferred technical solution, the purification enhancement component includes a first rotating hole, a rotating tube, a stirring tube, a rotating joint, a delivery pump, a suction tube and an infusion tube;

[0009] A first rotating hole is provided on the top of the purification box, a rotating tube is rotatably installed in the first rotating hole, a plurality of stirring tubes are installed at the lower part of the rotating tube, the plurality of stirring tubes are arranged in a circular array, and a nozzle is installed on the stirring tube, a rotating joint is installed at the upper end of the rotating tube, a delivery pump is installed on the purification box, the input end of the delivery pump is connected to the middle part of the purification box through a liquid suction tube, and the output end of the delivery pump is connected to the rotating joint through a liquid infusion tube, the rotating tube and the stirring tube form a liquid channel, and when the filtered exhaust gas enters the purification box, the pump is started. The delivery pump sucks the nitrogen oxide absorption liquid in the purification box through the suction tube, and then delivers the nitrogen oxide absorption liquid to the liquid channel composed of the rotating tube and the stirring tube through the infusion tube, and sprays the absorption liquid into the purification box through the nozzle, so as to realize the circulation of the nitrogen oxide absorption liquid in the purification box. At the same time, the spraying force of the nozzle can drive the rotating tube to rotate, so that the rotating tube can drive the stirring tube to rotate, so that the stirring tube can break up the bubbles rising in the absorption liquid, thereby improving the absorption effect of the absorption liquid on nitrogen oxides in the exhaust gas.

[0010] As a preferred technical solution, the purification enhancement assembly further includes a driving wheel, a second rotating hole, a rotating shaft, a driven wheel, a transmission belt, a column block, a slide groove, a moving ring, a ring groove and a rotating ring;

[0011] The top of the filter drum is provided with a driving wheel, and the top of the filter drum is provided with a second rotating hole, and a rotating shaft is rotatably installed in the second rotating hole, and a driven wheel is dark yellow on the upper end of the rotating shaft, and a transmission belt is sleeved on the driven wheel and the driving wheel, and a column block is installed on the lower end of the rotating shaft, and a sliding groove is provided on the inner upper part of the filter drum, and a movable ring is slidingly sleeved in the sliding groove, and an annular groove is provided on the inner diameter of the movable ring, and a rotating ring is rotatably installed in the annular groove, and the inner diameter of the rotating ring is connected with the outer diameter of the column block through the filter screen. When the rotating tube rotates, the rotating tube can drive the driving wheel to rotate synchronously, and the pulley transmission formed by the driving wheel, the transmission belt and the driven wheel can drive the rotating shaft to rotate. Since the rotating ring can rotate in the annular groove of the movable ring, the rotating shaft can drive the filter screen to rotate synchronously during the rotation process, thereby preventing the filter screen from being blocked by impurities and ensuring the filtering effect of the filter screen.

[0012] As a preferred technical solution, the purification and utilization component includes a rotating column, an annular slide rail, a fixed plate, a slideway, a slider, a connecting rod, a transmission sleeve, a driving shaft, a transmission rod and a slide hole;

[0013] A rotating column is installed at the center of the upper end of the driven wheel, and an annular slide rail is provided on the rotating column. Two fixed plates are symmetrically installed on the top of the filter drum, and slideways are provided on the two fixed plates. A slider is slidably installed in the slideway, and a connecting rod is installed on the slider, and a transmission sleeve is installed on the connecting rod. The rotating column passes through the transmission sleeve, and a driving shaft is rotatably installed on the transmission sleeve, and the driving shaft is inserted in the annular slide rail. A transmission rod is installed on the connecting rod. A sliding hole is provided on the top of the filter drum, and the transmission rod passes through the sliding hole and is connected to the moving ring. When the driven wheel rotates, the driven wheel can drive the rotating column to rotate synchronously. Through the extrusion force of the annular slide rail on the driving shaft during the rotation process, the transmission sleeve can be driven to reciprocate longitudinally, so that the transmission sleeve drives the slider to synchronously displace in the slideway through the connecting rod. When the transmission sleeve moves up, the connecting rod can drive the moving ring to move up synchronously through the transmission rod during the upward movement, so that the moving ring can drive the filter net from a plane state to an inverted cone state during the movement, thereby improving the anti-clogging effect of the filter net.

[0014] As an optimal technical solution, the moving ring is provided with a plurality of through holes, and a sliding rod is slidably installed in each of the plurality of through holes, an end block is installed at the lower end of the sliding rod, and the end block is connected to the moving ring through a supporting spring, a force-bearing ball is installed at the upper end of the sliding rod, and a plurality of linkage rods are installed on the rotating shaft, and extrusion balls are installed at the ends of the plurality of linkage rods. When the force-bearing ball moves to the highest point, the upper half of the force-bearing ball is flush with the lower half of the extrusion ball, and the force-bearing ball and the extrusion ball are on the same circular path. When the moving ring moves to the highest point, the rotating shaft can drive the extrusion ball to move in a circular trajectory through the linkage rod during rotation, so that the extrusion ball can press down the force-bearing ball during movement, so that the force-bearing ball collides with the moving ring, thereby allowing impurities attached to the filter net to fall off under the action of vibration.

[0015] As a preferred technical solution, the purification and utilization assembly also includes a water tank, a cylinder, a piston, a plug rod, a through hole, a linkage plate, a water suction pipe, a sprinkler head and a water delivery pipe;

[0016] A water tank and a cylinder body are installed on the filter cartridge, a piston is slidably installed in the cylinder body, a plug rod is installed on the piston, a through hole is opened on the top of the cylinder body, the plug rod passes through the through hole, and the top of the plug rod is connected to the transmission sleeve through a linkage plate, the input end of the cylinder body is connected to the water tank through a water suction pipe, a spray head is installed on the inner top of the filter cartridge, and the output end of the cylinder body is connected to the spray head through a water supply pipe. When the transmission sleeve moves upward, the transmission sleeve can drive the piston to move upward synchronously in the cylinder body through the linkage plate and the plug rod, so that the water flow in the cylinder body can pass through the water supply pipe and enter the spray head, so that the spray head can spray the filter screen during the rotation process, and the impurities attached to the filter screen can be entrained by the water flow to fall off, which can improve the cleaning effect of the filter screen, and when the transmission sleeve moves downward, the cylinder body can suck the water flow in the water tank through the water suction pipe, so as to realize automatic water replenishment of the cylinder body.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] When it is necessary to treat the exhaust gas after the nitrogen oxide reaction, start the first air pump, and the exhaust gas can be transported to the filter cartridge through the gas collecting pipe and the gas delivery pipe. The impurities in the exhaust gas can be intercepted and separated by the filter mesh in the filter cartridge, and then the filtered gas is sent to the purification box through the delivery pipe, and the nitrogen oxides in the exhaust gas are absorbed by the purification box. At the same time, the nitrogen oxide sensor is used to detect whether the upflowing air flow contains nitrogen oxides. If there are no nitrogen oxides, they can be directly discharged through the air outlet pipe and the exhaust pipe. If there are nitrogen oxides, the second air pump is controlled to operate, so that the two-way valve closes the exhaust pipe outlet and opens the intake pipe outlet, and the exhaust gas can be returned to the purification box through the intake pipe and the return pipe, so that the circulating purification treatment of the exhaust gas can be realized, thereby improving the purification effect of the exhaust gas.

[0019] The purification enhancement component set up in the present application can not only realize the circulation of nitrogen oxide absorption liquid in the purification box, but also enable the stirring tube to break up the bubbles rising in the absorption liquid during the rotation process, thereby improving the absorption effect of the absorption liquid on nitrogen oxides in the exhaust gas.

[0020] The present application can realize the rotation of the filter screen by setting up a purification utilization component, thereby preventing the filter screen from being blocked by impurities, and can utilize the longitudinal reciprocating movement of the transmission sleeve to realize the reciprocating switching of the filter screen from a flat state and an inverted cone shape, thereby improving the anti-blocking effect of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0022] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0023] Figure 3 It is a schematic diagram of a first cutaway structure of the present invention;

[0024] Figure 4 It is a second cross-sectional structural schematic diagram of the present invention;

[0025] Figure 5 yes Figure 2 A is an enlarged structural diagram;

[0026] Figure 6 yes Figure 3 The enlarged structural diagram at B in FIG.

[0027] Figure 7 yes Figure 4 The enlarged structural diagram at C in FIG.

[0028] Figure 8 yes Figure 3 The enlarged structural diagram at D in the figure.

[0029] In the figure: 1, filter cartridge; 2, purification box; 3, first air pump; 4, gas collecting pipe; 5, gas delivery pipe; 6, filter screen; 7, delivery pipe; 8, nitrogen oxide sensor; 9, air outlet pipe; 10, two-way valve; 11, exhaust pipe; 12, second air pump; 13, air intake pipe; 14, air return pipe; 15, exhaust valve;

[0030] 16. Purification enhancement component; 1601. first rotating hole; 1602. rotating tube; 1603. stirring tube; 1604. rotating joint; 1605. delivery pump; 1606. suction tube; 1607. infusion tube; 1608. driving wheel; 1609. second rotating hole; 1610. rotating shaft; 1611. driven wheel; 1612. transmission belt; 1613. column block; 1614. slideway; 1615. moving ring; 1616. ring groove; 1617. rotating ring;

[0031] 17. Purification and utilization components; 1701. Rotating column; 1702. Annular slide rail; 1703. Fixed plate; 1704. Slideway; 1705. Sliding block; 1706. Connecting rod; 1707. Transmission sleeve; 1708. Driving shaft; 1709. Transmission rod; 1710. Sliding hole; 1711. Perforation; 1712. Sliding rod; 1713. End block; 1714. Support spring; 1715. Forced ball; 1716. Linkage rod; 1717. Extrusion ball; 1718. Water tank; 1719. Cylinder body; 1720. Piston; 1721. Plug rod; 1722. Through hole; 1723. Linkage plate; 1724. Suction pipe; 1725. Sprinkler head; 1726. Water pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example: Figure 1-Figure 5 As shown, the present invention provides a technical solution for an exhaust gas treatment device after a catalytic oxidation reaction of nitrogen oxides, the exhaust gas treatment device after a catalytic oxidation reaction of nitrogen oxides comprises a filter cartridge 1 and a purification box 2, wherein the purification box 2 stores a nitrogen oxide absorption liquid, a first air pump 3 is installed on the filter cartridge 1, an air collecting pipe 4 is installed on the input end of the first air pump 3, and the output end of the first air pump 3 is connected to the lower part of the filter cartridge 1 through an air delivery pipe 5, a filter screen 6 is arranged in the filter cartridge 1, the upper part of the filter cartridge 1 is connected to the bottom of the purification box 2 through a delivery pipe 7, a nitrogen oxide sensor 8 and an air outlet pipe 9 are installed on the top of the purification box 2, a two-way valve 10 is installed on the air outlet pipe 9, an exhaust pipe 11 is installed on one output end of the two-way valve 10, a second air pump 12 is installed on the purification box 2, the input end of the second air pump 12 is connected to the other output end of the two-way valve 10 through an intake pipe 13, and the output end of the second air pump 12 is connected to the purification box 2. The bottom of the box 2 is connected through a return air pipe 14, and the nitrogen oxide sensor 8 is electrically connected to the two-way valve 10. When it is necessary to treat the waste gas after the nitrogen oxide reaction, the first air pump 3 is started, and the waste gas can be transported to the filter cartridge 1 through the air collecting pipe 4 and the air delivery pipe 5. The impurities in the waste gas can be intercepted and separated by the filter screen 6 in the filter cartridge 1, and then the filtered gas is sent to the purification box 2 through the delivery pipe 7, and the nitrogen oxides in the waste gas are absorbed by the purification box 2. At the same time, the nitrogen oxide sensor 8 detects whether the upwelling air flow contains nitrogen oxides. If there are no nitrogen oxides, it can be directly discharged through the outlet pipe 9 and the exhaust pipe 11. If there are nitrogen oxides, the second air pump 12 is controlled to operate, so that the two-way valve 10 closes the outlet of the exhaust pipe 11 and opens the outlet of the intake pipe 13. The waste gas can be refluxed to the purification box 2 through the intake pipe 13 and the return air pipe 14, which can realize the circulation purification treatment of the waste gas, thereby improving the purification effect of the waste gas.

[0034] A waste valve 15 is installed at the bottom of the filter cartridge 1, which is convenient for opening the waste valve 15 after the exhaust gas treatment is completed to discharge the impurities in the filter cartridge 1. The delivery pipe 7 and the return air pipe 14 are both one-way pipes.

[0035] The filter cartridge 1 and the purification box 2 are provided with a purification enhancement component 16 and a purification utilization component 17 , and the operation of the purification enhancement component 16 provides driving force for the purification utilization component 17 .

[0036] like Figure 1-Figure 4 and Figure 6-Figure 8 As shown, the purification enhancement component 16 includes a first rotating hole 1601, a rotating tube 1602, a stirring tube 1603, a rotating joint 1604, a delivery pump 1605, a suction tube 1606 and a delivery tube 1607;

[0037] A first rotating hole 1601 is provided on the top of the purification box 2, a rotating tube 1602 is rotatably installed in the first rotating hole 1601, a plurality of stirring tubes 1603 are installed at the lower part of the rotating tube 1602, the plurality of stirring tubes 1603 are arranged in a circular array, and a nozzle is installed on the stirring tube 1603, a rotating joint 1604 is installed at the upper end of the rotating tube 1602, a delivery pump 1605 is installed on the purification box 2, the input end of the delivery pump 1605 is connected to the middle part of the purification box 2 through a suction pipe 1606, and the output end of the delivery pump 1605 is connected to the rotating joint 1604 through an infusion pipe 1607, the rotating tube 1602 and the stirring tube 1603 form a liquid channel, when passing through When the filtered waste gas enters the purification box 2, the delivery pump 1605 is started to suck the nitrogen oxide absorption liquid in the purification box 2 through the suction tube 1606, and then the nitrogen oxide absorption liquid is delivered to the liquid channel composed of the rotating tube 1602 and the stirring tube 1603 through the infusion tube 1607. The absorption liquid is sprayed into the purification box 2 through the nozzle, so that the nitrogen oxide absorption liquid can circulate in the purification box 2. At the same time, the spraying force of the nozzle can drive the rotating tube 1602 to rotate, so that the rotating tube 1602 can drive the stirring tube 1603 to rotate, so that the stirring tube 1603 can break up the bubbles rising in the absorption liquid, thereby improving the absorption effect of the absorption liquid on nitrogen oxides in the waste gas.

[0038] The purification enhancement assembly 16 further includes a driving wheel 1608, a second rotating hole 1609, a rotating shaft 1610, a driven wheel 1611, a transmission belt 1612, a column block 1613, a slide groove 1614, a moving ring 1615, an annular groove 1616 and a rotating ring 1617;

[0039] A driving wheel 1608 is installed on the upper part of the rotating tube 1602, a second rotating hole 1609 is opened on the top of the filter cartridge 1, a rotating shaft 1610 is rotatably installed in the second rotating hole 1609, a driven wheel 1611 is dark yellow on the upper end of the rotating shaft 1610, a transmission belt 1612 is sleeved on the driven wheel 1611 and the driving wheel 1608, a column block 1613 is installed on the lower end of the rotating shaft 1610, a sliding groove 1614 is opened on the inner upper part of the filter cartridge 1, a moving ring 1615 is slidably sleeved in the sliding groove 1614, an annular groove 1616 is opened on the inner diameter of the moving ring 1615, and the annular groove 1616 rotates in the inner diameter of the moving ring 1615. A rotating ring 1617 is installed in the movable ring 1615, and the inner diameter of the rotating ring 1617 is connected to the outer diameter of the column block 1613 through the filter screen 6. When the rotating tube 1602 rotates, the rotating tube 1602 can drive the driving wheel 1608 to rotate synchronously. The pulley transmission formed by the driving wheel 1608, the transmission belt 1612 and the driven wheel 1611 can drive the rotating shaft 1610 to rotate. Since the rotating ring 1617 can rotate in the annular groove 1616 of the movable ring 1615, the rotating shaft 1610 can drive the filter screen 6 to rotate synchronously during the rotation process, thereby preventing the filter screen 6 from being blocked by impurities and ensuring the filtering effect of the filter screen 6.

[0040] like Figure 1-Figure 8 As shown, the purification and utilization component 17 includes a rotating column 1701, an annular slide rail 1702, a fixing plate 1703, a slideway 1704, a slider 1705, a connecting rod 1706, a transmission sleeve 1707, a driving shaft 1708, a transmission rod 1709 and a slide hole 1710;

[0041] A rotating column 1701 is installed at the center of the upper end of the driven wheel 1611, and an annular slide rail 1702 is provided on the rotating column 1701. Two fixed plates 1703 are symmetrically installed on the top of the filter cartridge 1, and slideways 1704 are provided on the two fixed plates 1703. A slider 1705 is slidably installed in the slideway 1704, and a connecting rod 1706 is installed on the slider 1705. A transmission sleeve 1707 is installed on the connecting rod 1706. The rotating column 1701 passes through the transmission sleeve 1707, and a driving shaft 1708 is rotatably installed on the transmission sleeve 1707. The driving shaft 1708 is inserted in the annular slide rail 1702, and a transmission rod 1709 is installed on the connecting rod 1706. A sliding hole 1710 is provided on the top of the filter cartridge 1. 1709 passes through the slide hole 1710 and is connected to the moving ring 1615. When the driven wheel 1611 rotates, the driven wheel 1611 can drive the rotating column 1701 to rotate synchronously. The extrusion force of the annular slide rail 1702 on the driving shaft 1708 during the rotation process can drive the transmission sleeve 1707 to move back and forth longitudinally, so that the transmission sleeve 1707 drives the slider 1705 to move synchronously in the slideway 1704 through the connecting rod 1706. When the transmission sleeve 1707 moves upward, the connecting rod 1706 can drive the moving ring 1615 to move upward synchronously through the transmission rod 1709 during the upward movement, so that the moving ring 1615 can drive the filter screen 6 from a planar state to an inverted cone state during the movement, thereby improving the anti-blocking effect of the filter screen 6.

[0042] The movable ring 1615 is provided with a plurality of through holes 1711, and a slide bar 1712 is slidably installed in each of the plurality of through holes 1711. An end block 1713 is installed at the lower end of the slide bar 1712, and the end block 1713 is connected to the movable ring 1615 through a supporting spring 1714. A force-bearing ball 1715 is installed at the upper end of the slide bar 1712, and a plurality of linkage rods 1716 are installed on the rotating shaft 1610, and a squeeze ball 1717 is installed at the end of the plurality of linkage rods 1716. When the force-bearing ball 1715 moves to the highest point, the upper half of the force-bearing ball 1715 and the lower half of the squeeze ball 1717 are connected. The force-bearing ball 1715 and the squeezing ball 1717 are flush, and are on the same circular path. When the moving ring 1615 moves to the highest point, the rotating shaft 1610 can drive the squeezing ball 1717 to move in a circular trajectory through the linkage rod 1716 during rotation, so that the squeezing ball 1717 can press down the force-bearing ball 1715 during movement, so that the force-bearing ball 1715 collides with the moving ring 1615, thereby allowing impurities attached to the filter screen 6 to fall off under the action of the vibration force, and after the squeezing ball 1717 quickly passes by, the force-bearing ball 1715 can be quickly reset under the elastic force of the supporting spring 1714.

[0043] The purification and utilization assembly 17 also includes a water tank 1718, a cylinder body 1719, a piston 1720, a plug rod 1721, a through hole 1722, a linkage plate 1723, a water suction pipe 1724, a spray head 1725 and a water delivery pipe 1726;

[0044] A water tank 1718 and a cylinder 1719 are installed on the filter cartridge 1. A piston 1720 is slidably installed in the cylinder 1719. A plug rod 1721 is installed on the piston 1720. A through hole 1722 is opened on the top of the cylinder 1719. The plug rod 1721 passes through the through hole 1722, and the top of the plug rod 1721 is connected to the transmission sleeve 1707 through a linkage plate 1723. The input end of the cylinder 1719 is connected to the water tank 1718 through a water suction pipe 1724. A spray head 1725 is installed on the inner top of the filter cartridge 1. The output end of the cylinder 1719 is connected to the spray head 1725 through a water pipe 1726. When the transmission sleeve 1707 moves upward, the transmission sleeve 1707 can drive the piston 1720 to move upward synchronously in the cylinder body 1719 through the linkage plate 1723 and the plug rod 1721, so that the water flow in the cylinder body 1719 can pass through the water pipe 1726 and enter the spray head 1725, so that the spray head 1725 can spray the filter screen 6 during the rotation process, and the impurities attached to the filter screen 6 can be carried away by the water flow, thereby improving the cleaning effect of the filter screen 6. When the transmission sleeve 1707 moves downward, the cylinder body 1719 can absorb the water flow in the water tank 1718 through the water suction pipe 1724, thereby realizing automatic water replenishment of the cylinder body 1719.

[0045] Working principle of the present invention:

[0046] When it is necessary to treat the waste gas after the nitrogen oxide reaction, start the first air pump 3, and the waste gas can be transported to the filter cartridge 1 through the air collecting pipe 4 and the air delivery pipe 5. The impurities in the waste gas can be intercepted and separated by the filter mesh 6 in the filter cartridge 1, and then the filtered gas is sent to the purification box 2 through the delivery pipe 7, and the nitrogen oxides in the waste gas are absorbed by the purification box 2. At the same time, the nitrogen oxide sensor 8 is used to detect whether the upflowing air flow contains nitrogen oxides. If there are no nitrogen oxides, they can be directly discharged through the outlet pipe 9 and the exhaust pipe 11. If there are nitrogen oxides, the second air pump 12 is controlled to operate, so that the two-way valve 10 closes the outlet of the exhaust pipe 11 and opens the outlet of the intake pipe 13. The waste gas can be returned to the purification box 2 through the intake pipe 13 and the return pipe 14, and the circulating purification treatment of the waste gas can be realized, thereby improving the purification effect of the waste gas.

[0047] When the filtered waste gas enters the purification box 2, the delivery pump 1605 is started to suck the nitrogen oxide absorption liquid in the purification box 2 through the suction pipe 1606, and then the nitrogen oxide absorption liquid is delivered to the liquid channel composed of the rotating tube 1602 and the stirring tube 1603 through the infusion tube 1607. The absorption liquid is sprayed into the purification box 2 through the nozzle, so that the circulation of the nitrogen oxide absorption liquid in the purification box 2 can be realized. At the same time, the spraying force of the nozzle can drive the rotating tube 1602 to rotate, so that the rotating tube 1602 can drive the stirring tube 1603 to rotate, so that the stirring tube 1603 can The surging bubbles can be dispersed, thereby improving the absorption effect of the absorption liquid on nitrogen oxides in the exhaust gas. At the same time, when the rotating tube 1602 rotates, the rotating tube 1602 can drive the driving wheel 1608 to rotate synchronously. The pulley transmission formed by the driving wheel 1608, the transmission belt 1612 and the driven wheel 1611 can drive the rotating shaft 1610 to rotate. Since the rotating ring 1617 can rotate in the annular groove 1616 of the movable ring 1615, the rotating shaft 1610 can drive the filter screen 6 to rotate synchronously during the rotation process, thereby preventing the filter screen 6 from being blocked by impurities and ensuring the filtering effect of the filter screen 6.

[0048] When the driven wheel 1611 rotates, the driven wheel 1611 can drive the rotating column 1701 to rotate synchronously. The extrusion force of the annular slide rail 1702 on the driving shaft 1708 during the rotation process can drive the transmission sleeve 1707 to move back and forth longitudinally, so that the transmission sleeve 1707 drives the slider 1705 to move synchronously in the slideway 1704 through the connecting rod 1706. When the transmission sleeve 1707 moves upward, the connecting rod 1706 can drive the moving ring 1615 to move upward synchronously through the transmission rod 1709 during the upward movement. Thereby, the movable ring 1615 can drive the filter 6 to change from a flat state to an inverted cone state during the movement, thereby improving the anti-clogging effect of the filter 6, and when the movable ring 1615 moves to the highest point, the rotating shaft 1610 can drive the squeezing ball 1717 to move in a circular trajectory through the linkage rod 1716 during the rotation process, so that the squeezing ball 1717 can press down the force-bearing ball 1715 during the movement, so that the force-bearing ball 1715 collides with the movable ring 1615, thereby allowing the impurities attached to the filter 6 to fall off under the action of the vibration force.

[0049] When the transmission sleeve 1707 moves upward, the transmission sleeve 1707 can drive the piston 1720 to move upward synchronously in the cylinder body 1719 through the linkage plate 1723 and the plug rod 1721, so that the water flow in the cylinder body 1719 can pass through the water pipe 1726 and enter the spray head 1725, so that the spray head 1725 can spray the filter screen 6 during the rotation process, and the impurities attached to the filter screen 6 can be carried away by the water flow, thereby improving the cleaning effect of the filter screen 6. When the transmission sleeve 1707 moves downward, the cylinder body 1719 can absorb the water flow in the water tank 1718 through the water suction pipe 1724, thereby realizing automatic water replenishment of the cylinder body 1719.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A device for treating exhaust gas after catalytic oxidation reaction of nitrogen oxides, characterized in that: The exhaust gas treatment device after the catalytic oxidation reaction of nitrogen oxides comprises a filter cartridge (1) and a purification box (2), wherein a first air pump (3) is installed on the filter cartridge (1), an air collecting pipe (4) is installed on the input end of the first air pump (3), and the output end of the first air pump (3) is connected to the lower part of the filter cartridge (1) through an air delivery pipe (5), a filter screen (6) is arranged in the filter cartridge (1), the upper part of the filter cartridge (1) is connected to the bottom of the purification box (2) through a delivery pipe (7), and a nitrogen oxide sensor (6) is installed on the top of the purification box (2). A sensor (8) and an air outlet pipe (9), wherein a two-way valve (10) is installed on the air outlet pipe (9), an exhaust pipe (11) is installed on one output end of the two-way valve (10), a second air pump (12) is installed on the purification box (2), an input end of the second air pump (12) is connected to the other output end of the two-way valve (10) through an air intake pipe (13), and an output end of the second air pump (12) is connected to the bottom of the purification box (2) through an air return pipe (14), and the nitrogen oxide sensor (8) is electrically connected to the two-way valve (10); The filter cartridge (1) and the purification box (2) are provided with a purification enhancement component (16) and a purification utilization component (17), and the operation of the purification enhancement component (16) provides an operating driving force for the purification utilization component (17); The purification enhancement component (16) comprises a first rotating hole (1601), a rotating tube (1602), a stirring tube (1603), a rotating joint (1604), a delivery pump (1605), a liquid suction tube (1606) and a liquid infusion tube (1607); A first rotating hole (1601) is provided on the top of the purification box (2), a rotating tube (1602) is rotatably installed in the first rotating hole (1601), a plurality of stirring tubes (1603) are installed at the bottom of the rotating tube (1602), the plurality of stirring tubes (1603) are arranged in a circular array, and a nozzle is installed on the stirring tube (1603), a rotating joint (1604) is installed at the upper end of the rotating tube (1602), a delivery pump (1605) is installed on the purification box (2), an input end of the delivery pump (1605) is connected to the middle of the purification box (2) through a liquid suction tube (1606), and an output end of the delivery pump (1605) is connected to the rotating joint (1604) through a liquid infusion tube (1607), and the rotating tube (1602) and the stirring tube (1603) form a liquid channel; The purification enhancement component (16) further comprises a driving wheel (1608), a second rotating hole (1609), a rotating shaft (1610), a driven wheel (1611), a transmission belt (1612), a column block (1613), a sliding groove (1614), a moving ring (1615), a ring groove (1616) and a rotating ring (1617); A driving wheel (1608) is installed on the upper part of the rotating tube (1602), a second rotating hole (1609) is opened on the top of the filter cartridge (1), a rotating shaft (1610) is rotatably installed in the second rotating hole (1609), a driven wheel (1611) is dark yellow on the upper end of the rotating shaft (1610), a transmission belt (1612) is sleeved on the driven wheel (1611) and the driving wheel (1608), and a lower end of the rotating shaft (1610) is provided with a rotating shaft (1610). A column block (1613) is installed, a slide groove (1614) is provided on the inner upper part of the filter cylinder (1), a movable ring (1615) is slidably sleeved in the slide groove (1614), an annular groove (1616) is provided on the inner diameter of the movable ring (1615), a rotating ring (1617) is rotatably installed in the annular groove (1616), and the inner diameter of the rotating ring (1617) is connected to the outer diameter of the column block (1613) through a filter screen (6); The purification and utilization component (17) comprises a rotating column (1701), an annular slide rail (1702), a fixing plate (1703), a slideway (1704), a slider (1705), a connecting rod (1706), a transmission sleeve (1707), a driving shaft (1708), a transmission rod (1709) and a slide hole (1710); A rotating column (1701) is installed at the center of the upper end of the driven wheel (1611), and an annular slide rail (1702) is provided on the rotating column (1701). Two fixed plates (1703) are symmetrically installed on the top of the filter cartridge (1), and slideways (1704) are provided on the two fixed plates (1703). A slider (1705) is slidably installed in the slideway (1704), and a connecting rod (1706) is installed on the connecting rod (1706). A transmission sleeve (1707) is provided, the rotating column (1701) passes through the transmission sleeve (1707), a driving shaft (1708) is rotatably mounted on the transmission sleeve (1707), the driving shaft (1708) is inserted into the annular slide rail (1702), a transmission rod (1709) is mounted on the connecting rod (1706), a sliding hole (1710) is opened at the top of the filter cartridge (1), and the transmission rod (1709) passes through the sliding hole (1710) and is connected to the moving ring (1615).

2. The exhaust gas treatment device after catalytic oxidation reaction of nitrogen oxides according to claim 1 is characterized in that: A waste discharge valve (15) is installed at the bottom of the filter cartridge (1), and the delivery pipe (7) and the air return pipe (14) are both one-way pipes.

3. The exhaust gas treatment device after catalytic oxidation reaction of nitrogen oxides according to claim 1 is characterized in that: The movable ring (1615) is provided with a plurality of through holes (1711), and a sliding rod (1712) is slidably installed in each of the plurality of through holes (1711). An end block (1713) is installed at the lower end of the sliding rod (1712), and the end block (1713) is connected to the movable ring (1615) via a supporting spring (1714). A force-bearing ball (1715) is installed at the upper end of the sliding rod (1712), and a plurality of linkage rods (1716) are installed on the rotating shaft (1610). Extrusion balls (1717) are installed at the ends of the plurality of linkage rods (1716). When the force-bearing ball (1715) moves to the highest point, the upper half of the force-bearing ball (1715) is flush with the lower half of the extrusion ball (1717), and the force-bearing ball (1715) and the extrusion ball (1717) are on the same circular path.

4. The exhaust gas treatment device after catalytic oxidation reaction of nitrogen oxides according to claim 3 is characterized in that: The purification and utilization component (17) also includes a water tank (1718), a cylinder body (1719), a piston (1720), a plug rod (1721), a through hole (1722), a linkage plate (1723), a water suction pipe (1724), a spray head (1725) and a water delivery pipe (1726); A water tank (1718) and a cylinder body (1719) are installed on the filter cartridge (1), a piston (1720) is slidably installed in the cylinder body (1719), a plug rod (1721) is installed on the piston (1720), a through hole (1722) is opened on the top of the cylinder body (1719), the plug rod (1721) passes through the through hole (1722), and the top of the plug rod (1721) is connected to the transmission sleeve (1707) through a linkage plate (1723), the input end of the cylinder body (1719) is connected to the water tank (1718) through a water suction pipe (1724), a spray head (1725) is installed on the inner top of the filter cartridge (1), and the output end of the cylinder body (1719) is connected to the spray head (1725) through a water delivery pipe (1726).

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