A coal-fired machine flue gas desulfurization cooler

Abstract

The present invention relates to the technical field of smoke filtration, and discloses a coal-fired engine flue gas desulfurization cooler, a coal-fired engine flue gas desulfurization cooler, comprising a desulfurization tower, characterized in that: an air inlet is provided on the lower outer wall of the desulfurization tower, an air outlet is provided on the upper outer wall of the desulfurization tower, an isolation frame is fixedly connected to the inner wall of the desulfurization tower, a filter screen is installed in the frame of the isolation frame, a plurality of filter holes are provided on the filter screen, and the filter screen has two states, namely a flat plate state and an arc plate state; in the flat plate state, the filter holes on the filter screen are in a straight hole state. The present invention deforms the filter holes by switching the flat plate state and the arc plate state of the filter screen, thereby squeezing out the particles embedded in the filter holes when filtering the smoke, avoiding the continuous accumulation of particles in the smoke in the filter holes, resulting in the continuous slowing down of the rate of smoke passing through the filter screen, ensuring the cleanliness of the smoke, and improving the desulfurization efficiency and the operation stability of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of smoke filtering, in particular to a coal-fired machine flue gas desulfurization cooler. Background Art

[0002] A coal-fired engine is a mechanical device that converts the chemical energy of fossil fuels such as coal into electrical energy. Its working principle is to convert the heat energy generated by coal combustion into electrical energy through a power generation device. During the combustion process, the sulfur in the coal is oxidized into sulfur dioxide during combustion. The emission of sulfur dioxide pollutes the atmospheric environment, so it is crucial to control the generation of sulfur dioxide and reduce emissions.

[0003] For example, Chinese patent publication No. CN116212535A, the invention relates to the field of flue gas treatment technology, specifically an environmentally friendly dust removal desulfurization and denitrification device, including a denitrification reactor, a fan system, an integrated desulfurization tower, an alkali solution reflux trough, an integrated dust removal ring, an inner ring cavity, a dust filter ring, a filling layer and a spray pipe, the denitrification reactor is connected with the integrated dust removal ring through the fan system, the integrated dust removal ring is fixedly arranged inside the integrated desulfurization tower, an alkali solution reflux trough is arranged near the bottom of the integrated desulfurization tower, the integrated dust removal ring is in a circular ring shape, and the alkali solution reflux trough is located below the integrated dust removal ring; the invention integrates the dust removal function into the integrated desulfurization tower, improves the space utilization of the system device, and cooperates with the integrated desulfurization tower to increase the desulfurization efficiency.

[0004] However, in the process of flue gas desulfurization of coal-fired engines, the filter plays a very important role. The filter can effectively filter pollutants and particulate matter, ensure the cleanliness of circulating water, improve the desulfurization efficiency and the operating stability of the equipment, but when the smoke passes through the filter, the particles in the smoke will inevitably embed into the filter holes of the filter, causing the rate of smoke passing through the filter to slow down, resulting in reduced filtration efficiency, affecting the cleanliness of the smoke, and thus reducing the desulfurization efficiency and the operating stability of the equipment. Summary of the invention

[0005] The object of the present invention is to provide a coal-fired engine flue gas desulfurization cooler to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal-fired flue gas desulfurization cooler, a coal-fired flue gas desulfurization cooler, comprising a desulfurization tower, an air inlet is provided on the lower outer wall of the desulfurization tower, an air outlet is provided on the upper outer wall of the desulfurization tower, an isolation frame is fixedly connected to the inner wall of the desulfurization tower, a filter screen is installed in the isolation frame, a plurality of filter holes are provided on the filter screen, and the filter screen has two states, namely a flat plate state and an arc plate state;

[0007] In the flat plate state, the filter holes on the filter screen are in a straight hole state;

[0008] In the arc plate state, the filter holes on the filter screen are in an extruded state, and the lower inlet is pulled and expanded, while the upper outlet is squeezed and shrunk.

[0009] Preferably, both inner walls of the isolation frame are provided with mounting grooves, both side edges of the filter are slidably mounted in the mounting grooves, and the edge of the filter is connected to the inner wall of the mounting groove via a first spring.

[0010] Preferably, the inner walls of the desulfurization tower on both sides of the upper and lower sides of the filter are respectively penetrated and rotatably installed with a second rotating rod and a first rotating rod, a first water outlet pipe is opened inside the first rotating rod, a second water outlet pipe is opened inside the second rotating rod, a second spray pipe connected to the first water outlet pipe is fixedly connected to the outer wall of the first rotating rod, a first spray pipe connected to the second water outlet pipe is fixedly connected to the outer wall of the second rotating rod, the first spray pipe and the second spray pipe are vertically arranged, and the ends of the two can contact and abut against the filter, and a plurality of spray heads are installed on the second spray pipe and the first spray pipe;

[0011] Also included is a liquid supply assembly for supplying liquid to the first spray pipe and the second spray pipe;

[0012] The invention also includes a driving assembly, which can rotate and adjust the first rotating rod and the second rotating rod along the axis.

[0013] Preferably, the driving assembly includes a first rotating rod rotatably connected to the outer wall of the first rotating rod, the outer wall of the first rotating rod is fixedly connected to the second rotating rod, the outer wall of the first rotating rod is equipped with a first protrusion, the outer wall of the second rotating rod is equipped with a second protrusion, a tension spring is connected between the first protrusion and the second protrusion, the first rotating rod is also coaxially fixed with a second transmission wheel sleeved on the outer wall of the first rotating rod, the end of the second rotating rod extending out of the outer wall of the desulfurization tower is fixedly installed with the first transmission wheel, and the second transmission wheel is connected to the first transmission wheel through a transmission belt;

[0014] It also includes a limit frame fixedly installed on the top of the air inlet, and the ends of the first rotating rod and the second rotating rod can both contact and abut against the inner walls of the two sides of the limit frame;

[0015] It also includes a toggle assembly for causing the first rotating rod and the second rotating rod to swing back and forth.

[0016] Preferably, the toggle assembly includes a support rod fixedly connected to the inner wall of the limit frame, and the support rod is coaxially arranged with the first rotating rod, a toggle rod is installed on the outer wall of the support rod, and the toggle rod can rotate and slide on the support rod, a third protrusion is fixedly connected to the outer wall of the toggle rod, and the third protrusion extends between the first rotating rod and the second rotating rod, a long gear is fixedly installed on the outer wall of the toggle rod, and the long gear is coaxially sleeved on the outer wall of the support rod, a collar is installed on the outer wall of the support rod away from the first rotating rod, and a third spring is installed between the long gear and the collar;

[0017] A limiting ring is fixedly installed on the outer wall of the support rod at a side close to the desulfurization tower, and a stepped protrusion is provided on the outer wall of the limiting ring. The stepped protrusion has four horizontal sides with different depths and arranged alternately, and the horizontal sides are connected end to end by beveled sides. A transmission connecting rod is fixedly connected to the outer wall of the toggle rod, and the transmission connecting rod abuts against the stepped protrusion;

[0018] A motor is installed on the outer wall of the limiting frame, a transmission shaft of the motor passes through the outer wall of the limiting frame and is fixedly connected with a transmission gear, and the transmission gear is meshed with the long gear.

[0019] Preferably, the liquid supply component includes a water circulation pipe fixedly connected to the outer wall of the bottom of the desulfurization tower, a water pump is connected to the other side of the water circulation pipe, the water outlet of the water pump is connected to a connecting rod, the outer wall of the connecting rod is provided with two docking holes, and the first rotating rod and the second rotating rod are respectively rotatably connected to the two docking holes, a liquid supply pipe is provided inside the connecting rod, the water inlet of the liquid supply pipe is docked with the water outlet of the water pump, and the water outlet of the liquid supply pipe is docked with the first water outlet pipe and the second water outlet pipe respectively.

[0020] Preferably, the liquid supply pipe, the first water outlet pipe and the second water outlet pipe are all elliptical pipes, and the centers of the circles at the joints coincide.

[0021] Preferably, a pressure sensor switch is fixedly installed on the inner wall of the desulfurization tower below the filter.

[0022] Preferably, a heat exchange pipe system is also installed on the top of the desulfurization tower.

[0023] Preferably, the second transmission wheel and the first transmission wheel are sprockets, and the transmission belt is a chain.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention deforms the filter holes by switching the flat plate state and the arc plate state of the filter, thereby squeezing out the particles embedded in the filter holes when filtering the flue gas, avoiding the continuous accumulation of particles in the flue gas in the filter holes and causing the rate of flue gas passing through the filter to continue to slow down, thereby ensuring the cleanliness of the smoke and improving the desulfurization efficiency and the operating stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of the present invention;

[0027] Figure 2 It is a partial structural cross-sectional view of the limiting frame of the present invention;

[0028] Figure 3 It is a top view and a partial enlarged view of the present invention;

[0029] Figure 4 It is a left side view of the present invention;

[0030] Figure 5 A top perspective view of the present invention;

[0031] Figure 6 It is a right side cross-sectional view of the present invention;

[0032] Figure 7 It is a front cross-sectional view of the present invention;

[0033] Figure 8 For the present invention Figure 7 Sectional view at AA in the middle;

[0034] Fig. 9 For the present invention Figure 7 Sectional view at the middle BB;

[0035] Fig.10 It is a schematic diagram of the filter holes of the filter screen in the straight plate state of the present invention;

[0036] Fig.11 It is a schematic diagram of the filter holes in the arc plate state of the filter screen of the present invention.

[0037] In the figure: 1, desulfurization tower; 2, air inlet; 3, air outlet; 4, connecting rod; 5, first rotating rod; 6, second rotating rod; 7, filter screen; 8, mounting groove; 9, liquid supply pipeline; 10, first water outlet pipeline; 11, second water outlet pipeline; 12, first spray pipeline; 13, second spray pipeline; 14, water pump; 15, isolation frame; 16, first transmission wheel; 17, transmission belt; 18, first rotating rod; 19, first protrusion; 20, The second rotating rod; 21. The second protrusion; 22. The tension spring; 23. The limit frame; 24. The support rod; 25. The toggle rod; 26. The third protrusion; 27. The long gear; 28. The transmission gear; 29. ​​The transmission connecting rod; 30. The limit ring; 31. The pressure sensor switch; 32. The filter hole; 33. The first spring; 34. The water circulation pipeline; 35. The second transmission wheel; 36. The collar; 37. The stepped protrusion; 38. The docking hole; 39. The third spring. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figures 1 to 11 The present invention provides a technical solution: a coal-fired flue gas desulfurization cooler, comprising a desulfurization tower 1, an air inlet 2 is provided on the lower outer wall of the desulfurization tower 1, an air outlet 3 is provided on the upper outer wall of the desulfurization tower 1, an isolation frame 15 is fixedly connected to the inner wall of the desulfurization tower 1, a filter screen 7 is installed in the isolation frame 15, a plurality of filter holes 32 are provided on the filter screen 7, and the filter screen 7 has two states, namely a flat plate state and an arc plate state;

[0040] In the flat plate state, the filter holes 32 on the filter screen 7 are in a straight hole state;

[0041] In the arc plate state, the filter holes 32 on the filter screen 7 are in an extruded state, and the lower inlet is pulled and expanded, while the upper outlet is squeezed and shrunk.

[0042] See also Figure 7 When the device is used, the flue gas is first discharged into the desulfurization tower 1 from the air inlet 2. After entering the desulfurization tower 1, the flue gas will continue to move upward. When the flue gas passes through the filter 7, the large-diameter particles in the flue gas will be intercepted by the filter 7, and the remaining flue gas will pass through the filter hole 32 and be discharged into the next device from the air outlet 3.

[0043] When smoke passes through the filter 7, tiny particles in the smoke will inevitably embed into the filter holes 32 of the filter 7, causing the rate at which smoke passes through the filter 7 to slow down, resulting in reduced filtration efficiency, affecting the cleanliness of the smoke, and thus reducing the desulfurization efficiency and the operating stability of the equipment.

[0044] Therefore, under normal conditions, Fig.10 As shown, the filter screen 7 is in a straight plate state, and the filter hole 32 is in a straight hole state. When the smoke continuously passes through it, the filter screen 7 filters the large particles in the smoke. If particles are embedded in the filter hole 32 and cause blockage to a certain extent, the filter screen 7 will be converted into an arc plate state, such as Fig.11 As shown, the filter holes 32 on the filter screen 7 are in an extruded state, and the lower inlet is pulled and expanded, while the upper outlet is squeezed and shrunk, which will cause the particles embedded in the filter holes 32 to fall back into the desulfurization tower 1 under the action of extrusion. At the same time, the impurities at the filtering point on the surface of the filter screen 7 will also fall off from it under the tension pulling action of the surface of the filter screen 7, thereby avoiding the continuous accumulation of particles in the flue gas in the filter holes 32, resulting in the continuous slowing down of the rate at which the flue gas passes through the filter screen 7, ensuring the cleanliness of the smoke, and improving the desulfurization efficiency and the operating stability of the equipment.

[0045] Furthermore, mounting grooves 8 are provided on both inner walls of the isolation frame 15 , and both side edges of the filter screen 7 are slidably installed in the mounting grooves 8 , and the edge of the filter screen 7 is connected to the inner wall of the mounting groove 8 via a first spring 33 .

[0046] See also Figure 7 , installation grooves 8 are provided on the inner walls on both sides of the isolation frame 15, and the edges on both sides of the filter screen 7 are slidably installed in the installation grooves 8 respectively, and the edges on both sides of the filter screen 7 installed in the installation grooves 8 are connected to the inner walls of the installation grooves 8 through the first springs 33, and the other two sides are in contact with the inner walls of the isolation frame 15. When the filter screen 7 is converted from a flat plate state to an arc plate state, the first springs 33 on both sides will be stretched, and the middle part of the filter screen 7 will bend downward, so that the filter hole 32 is in an extruded state, the lower inlet is pulled to expand, and the upper outlet is squeezed to shrink.

[0047] The filter screen 7 can be configured such that the thickness of the two sides is thicker than that of the middle part, and the middle part is configured such that the filter plate is thinner and can undergo a certain degree of elastic deformation.

[0048] Furthermore, the desulfurization tower 1 has a second rotating rod 6 and a first rotating rod 5 respectively rotatably installed through the inner walls of the upper and lower sides of the filter screen 7, a first water outlet pipe 10 is provided inside the first rotating rod 5, a second water outlet pipe 11 is provided inside the second rotating rod 6, a second spray pipe 13 connected to the first water outlet pipe 10 is fixedly connected to the outer wall of the first rotating rod 5, a first spray pipe 12 connected to the second water outlet pipe 11 is fixedly connected to the outer wall of the second rotating rod 6, the first spray pipe 12 and the second spray pipe 13 are vertically arranged, and the ends of the two can contact and abut against the filter screen 7, and a plurality of spray heads are installed on the second spray pipe 13 and the first spray pipe 12;

[0049] It also includes a liquid supply assembly for supplying liquid to the first spray pipe 12 and the second spray pipe 13;

[0050] The invention also comprises a driving assembly, which can make the first rotating rod 5 and the second rotating rod 6 rotate and adjust along the axis.

[0051] See also Figure 6 Under normal conditions, the second spray pipe 13 and the filter screen 7 remain in a vertical state, and the end of the second spray pipe 13 abuts against the bottom of the filter screen 7, so that the filter screen 7 remains in a flat state, so that the smoke can pass through the filter screen 7 normally and filter out pollutants and particulate matter. The liquid supply component causes the nozzle on the second spray pipe 13 to continuously spray lime water slurry to react with sulfur dioxide in the smoke to achieve the effect of desulfurization. The nozzle on the first spray pipe 12 performs secondary desulfurization treatment with the smoke after passing through the filter screen 7 to prevent unreacted sulfur dioxide from being discharged through the outlet 3.

[0052] When the filter holes 32 on the filter screen 7 are blocked, the first rotating rod 5 and the second rotating rod 6 are rotated by adjusting the assembly, the first rotating rod 5 drives the second spray pipe 13 to rotate, and the second rotating rod 6 drives the first spray pipe 12 to rotate, so that the second spray pipe 13 is parallel to the filter screen 7, and the end of the first spray pipe 12 will press against the filter screen 7 to bend the filter screen 7 downward, so that the filter screen 7 is converted from a straight plate state to an arc plate state, so that the particles embedded in the filter holes 32 fall back into the desulfurization tower 1 under the action of squeezing, thereby avoiding the continuous accumulation of particles in the flue gas in the filter holes 32, resulting in the continuous slowing down of the rate at which the flue gas passes through the filter screen 7.

[0053] It is worth mentioning that the lime water slurry sprayed from the first spray pipe 12 will fall onto the filter 7, increasing the weight of the particles embedded in the filter holes 32. Combined with the squeezing of the particles when the filter 7 is converted from a straight plate state to an arc plate state, the particles embedded in the filter holes 32 can be squeezed out more easily, thereby enabling the filter 7 to better filter the smoke.

[0054] Further, the driving assembly includes a first rotating rod 18 rotatably connected to the outer wall of the first rotating rod 5, the outer wall of the first rotating rod 5 is fixedly connected to the second rotating rod 20, the outer wall of the first rotating rod 18 is installed with a first protrusion 19, the outer wall of the second rotating rod 20 is installed with a second protrusion 21, a tension spring 22 is connected between the first protrusion 19 and the second protrusion 21, the first rotating rod 18 is also coaxially fixed with a second transmission wheel 35 sleeved on the outer wall of the first rotating rod 5, the end of the second rotating rod 6 extending out of the outer wall of the desulfurization tower 1 is fixedly installed with the first transmission wheel 16, and the second transmission wheel 35 is connected to the first transmission wheel 16 through a transmission belt 17;

[0055] It also includes a limit frame 23 fixedly mounted on the top of the air inlet 2, and the ends of the first rotating rod 18 and the second rotating rod 20 can contact and abut against the inner walls of both sides of the limit frame 23;

[0056] The device also includes a toggle assembly for causing the first rotating rod 18 and the second rotating rod 20 to swing back and forth.

[0057] See also Figure 2 and Figure 6 When the filter screen 7 needs to be converted from the flat plate state to the arc plate state, the second rotating rod 20 is rotated by the toggle assembly, thereby driving the first rotating rod 5 to rotate, and the first rotating rod 5 then causes the second spray pipe 13 to rotate and disengage from the filter screen 7. When the second rotating rod 20 rotates from one side of the limit frame 23 to abut against the other side, during this process, the first rotating rod 18 will first remain stationary. When the tension spring 22 rotates across the axis of the first rotating rod 5, the tension spring 22 will pull the first rotating rod 18 to rotate, so that the first rotating rod 18 has a delayed rotation effect, and then the first rotating rod 18 will drive the second transmission wheel 35 to rotate together until its end contacts and abuts against the other side of the limit frame 23. At the same time, the second transmission wheel 35 will drive the first transmission wheel 16 to rotate together through the transmission belt 17, so that the transmission belt 17 drives the second rotating rod 6 and the first spray pipe 12 to rotate, and the end of the first spray pipe 12 will abut against the filter screen 7 to make the filter screen 7 bend downward, so that the filter screen 7 is converted from the straight plate state to the arc plate state;

[0058] In this way, the tension spring 22 can exert a delayed rotation effect on the first rotating rod 18, so that there is a sequential rotation relationship between the first spray pipe 12 and the second spray pipe 13, that is, the second spray pipe 13 rotates first and the first spray pipe 12 rotates later, so as to avoid the two contacting the filter 7 at the same time and affecting the state switching.

[0059] On the contrary, during resetting, that is, when the filter screen 7 is converted from the arc plate state to the straight plate state, the toggle assembly drives the first rotating rod 18 to rotate. Similarly to the above, under the action of the tension spring 22, the second rotating rod 20 has the effect of delayed rotation, so that the rotation sequence between the first spray pipe 12 and the second spray pipe 13 is reversed, that is, the first spray pipe 12 rotates first, and the second spray pipe 13 rotates later, until the filter screen 7 is converted from the arc plate state to the straight plate state, and the resetting is completed.

[0060] Further, the toggle assembly includes a support rod 24 fixedly connected to the inner wall of the limit frame 23, and the support rod 24 is coaxially arranged with the first rotating rod 5, a toggle rod 25 is installed on the outer wall of the support rod 24, and the toggle rod 25 can rotate and slide on the support rod 24, a third protrusion 26 is fixedly connected to the outer wall of the toggle rod 25, and the third protrusion 26 extends between the first rotating rod 18 and the second rotating rod 20, a long gear 27 is fixedly installed on the outer wall of the toggle rod 25, and the long gear 27 is coaxially sleeved on the outer wall of the support rod 24, a collar 36 is installed on the outer wall of the support rod 24 away from the first rotating rod 18, and a third spring 39 is installed between the long gear 27 and the collar 36;

[0061] A limit ring 30 is fixedly installed on the outer wall of the support rod 24 at one side close to the desulfurization tower 1. A stepped protrusion 37 is provided on the outer wall of the limit ring 30. The stepped protrusion 37 has four horizontal edges of different depths and arranged alternately, and the horizontal edges are connected end to end by bevel edges. A transmission connecting rod 29 is fixedly connected to the outer wall of the toggle rod 25, and the transmission connecting rod 29 abuts against the stepped protrusion 37.

[0062] A motor is installed on the outer wall of the limiting frame 23 , and a transmission shaft of the motor passes through the outer wall of the limiting frame 23 and is fixedly connected with a transmission gear 28 , which meshes with the long gear 27 .

[0063] See also Figure 3 When the filter screen 7 needs to change its state, the motor drives the transmission gear 28 to rotate through the transmission shaft, so that the transmission gear 28 drives the long gear 27 to rotate, and then the long gear 27 drives the toggle rod 25 to rotate, and the third protrusion 26 on the outer wall of the toggle rod 25 will toggle the first rotating rod 18 or the second rotating rod 20.

[0064] Through the cooperation between the transmission connecting rod 29 and the stepped protrusion 37, in the process of the third protrusion 26 toggling the first rotating rod 18 or the second rotating rod 20, when the first rotating rod 18 or the second rotating rod 20 rotates from one side of the limit frame 23 to the other side, the hypotenuse of the stepped protrusion 37 will cause the toggle rod 25 to drive the third protrusion 26 to move in the direction away from the first rotating rod 18 and the second rotating rod 20, so that the third protrusion 26 can cross the first rotating rod 18 or the second rotating rod 20 and rotate to the other side, and then the third protrusion 26 will be re-extended between the first rotating rod 18 and the second rotating rod 20. In this way, the filter screen 7 can be switched back and forth between the flat plate state and the arc plate state by driving the third protrusion 26 to rotate one circle by the toggle rod 25.

[0065] Furthermore, the liquid supply component includes a water circulation pipe 34 fixedly connected to the outer wall of the bottom of the desulfurization tower 1, and the other side of the water circulation pipe 34 is connected to a water pump 14, and the water outlet of the water pump 14 is connected to a connecting rod 4, and the outer wall of the connecting rod 4 is provided with two docking holes 38, and the first rotating rod 5 and the second rotating rod 6 are respectively rotatably connected to the two docking holes 38, and a liquid supply pipe 9 is provided inside the connecting rod 4, and the water inlet of the liquid supply pipe 9 is docked with the water outlet of the water pump 14, and the water outlet of the liquid supply pipe 9 is docked with the first outlet pipe 10 and the second outlet pipe 11 respectively.

[0066] See also Figure 7 The water pump 14 sucks the lime water slurry at the bottom of the desulfurization tower 1 through the water circulation pipe 34 and discharges it into the liquid supply pipe 9 inside the connecting rod 4, thereby entering the first water outlet pipe 10 and the second water outlet pipe 11 and leading to the first spray pipe 12 and the second spray pipe 13, and then sprayed out from the nozzle, completing the recycling of the lime water slurry, allowing the sulfur dioxide in the smoke to be fully reacted, preventing sulfur dioxide from being discharged from the air outlet 3, and increasing the desulfurization efficiency of the device.

[0067] Furthermore, the liquid supply pipe 9, the first water outlet pipe 10 and the second water outlet pipe 11 are all elliptical pipes, and the centers of the circles at the joints coincide.

[0068] See also Figure 8 and Fig. 9 When the filter screen 7 is in a flat state, the elliptical interface of the liquid supply pipe 9 and the second water outlet pipe 11 overlaps, so that the water flow reaches the maximum, and the elliptical interfaces of the liquid supply pipe 9 and the first water outlet pipe 10 are staggered, so that the area through which the lime water slurry can pass is reduced, thereby reducing the water flow, and then making the water flow at the second water outlet pipe 11 larger, that is, in the flat state, the second spray pipe 13 sprays more lime water slurry than the first spray pipe 12, so that the sulfur dioxide in the flue gas can be better reacted.

[0069] In the arc plate state, on the contrary, the sprinkler head at the first sprinkler pipe 12 sprays more lime water slurry than the sprinkler head at the second sprinkler pipe 13, so that the particles embedded in the filter holes 32 can be better washed by the lime water slurry, and the particles are squeezed when the filter screen 7 is converted from the straight plate state to the arc plate state, so that the particles embedded in the filter holes 32 can be better squeezed out, thereby enabling the filter screen 7 to better filter the smoke.

[0070] Furthermore, a pressure sensor switch 31 is fixedly installed on the inner wall of the desulfurization tower 1 below the filter screen 7 .

[0071] The pressure sensor switch 31 is electronically controlled by the motor. When the filter hole 32 on the filter 7 is blocked, the smoke under the filter 7 continues to accumulate due to the low pass rate, and the pressure continues to increase. When it increases to a certain level, the pressure sensor switch 31 will be triggered, and the pressure sensor switch 31 will control the motor to rotate, thereby completing the subsequent cleaning of the filter 7.

[0072] Furthermore, a heat exchange pipe system is installed on the top of the desulfurization tower 1.

[0073] Installing a heat exchange pipe system on the top of the desulfurization tower 1 can better cool the flue gas and prevent the equipment from being damaged by overheating. Specifically, the existing heat exchange pipes laid in a spiral manner can be used.

[0074] Further, the second transmission wheel 35 and the first transmission wheel 16 are sprocket wheels, and the transmission belt 17 is a chain.

[0075] Since a certain reaction force is generated when the first spray pipe 12 and the second spray pipe 13 transform the filter screen 7, the second transmission wheel 35 and the first transmission wheel 16 use sprockets, and the transmission belt 17 uses a chain to prevent the second transmission wheel 35, the first transmission wheel 16 and the transmission belt 17 from slipping.

[0076] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal-fired engine flue gas desulfurization cooler, comprising a desulfurization tower (1), characterized in that: An air inlet (2) is provided on the lower outer wall of the desulfurization tower (1), an air outlet (3) is provided on the upper outer wall of the desulfurization tower (1), an isolation frame (15) is fixedly connected to the inner wall of the desulfurization tower (1), a filter screen (7) is installed inside the isolation frame (15), a plurality of filter holes (32) are provided on the filter screen (7), and the filter screen (7) has two states, namely a flat plate state and an arc plate state; In the flat plate state, the filter holes (32) on the filter screen (7) are in a straight hole state; In the arc plate state, the filter holes (32) on the filter screen (7) are in an extruded state, and the lower inlet is pulled and expanded, while the upper outlet is squeezed and shrunk; The inner walls on both sides of the isolation frame (15) are provided with mounting grooves (8), the edges on both sides of the filter screen (7) are slidably mounted in the mounting grooves (8), and the edges of the filter screen (7) are connected to the inner walls of the mounting grooves (8) via a first spring (33); The desulfurization tower (1) has a second rotating rod (6) and a first rotating rod (5) respectively rotatably installed on the inner walls of the upper and lower sides of the filter (7); a first water outlet pipe (10) is provided inside the first rotating rod (5); a second water outlet pipe (11) is provided inside the second rotating rod (6); a second spray pipe (13) communicating with the first water outlet pipe (10) is fixedly connected to the outer wall of the first rotating rod (5); a first spray pipe (12) communicating with the second water outlet pipe (11) is fixedly connected to the outer wall of the second rotating rod (6); the first spray pipe (12) and the second spray pipe (13) are vertically arranged, and the ends of the two can contact and abut against the filter (7); and a plurality of spray heads are installed on the second spray pipe (13) and the first spray pipe (12); It also includes a liquid supply assembly for supplying liquid to the first spray pipe (12) and the second spray pipe (13); It also includes a driving assembly, which can make the first rotating rod (5) and the second rotating rod (6) rotate and adjust along the axis; When the end of the second spray pipe (13) abuts against the bottom of the filter screen (7), the filter screen (7) remains in a flat plate state; When the end of the first spray pipe (12) abuts against the filter screen (7), the filter screen (7) is bent downward.

2. The coal-fired engine flue gas desulfurization cooler according to claim 1, characterized in that: The driving assembly comprises a first rotating rod (18) rotatably connected to the outer wall of the first rotating rod (5); the outer wall of the first rotating rod (5) is fixedly connected to the second rotating rod (20); the outer wall of the first rotating rod (18) is provided with a first protrusion (19); the outer wall of the second rotating rod (20) is provided with a second protrusion (21); a tension spring (22) is connected between the first protrusion (19) and the second protrusion (21); the first rotating rod (18) is also coaxially fixed with a second transmission wheel (35) sleeved on the outer wall of the first rotating rod (5); one end of the second rotating rod (6) extending out of the outer wall of the desulfurization tower (1) is fixedly installed with the first transmission wheel (16); the second transmission wheel (35) is connected to the first transmission wheel (16) through a transmission belt (17); It also includes a limit frame (23) fixedly mounted on the top of the air inlet (2), and the ends of the first rotating rod (18) and the second rotating rod (20) can both contact and abut against the inner walls of both sides of the limit frame (23); It also includes a toggle assembly that causes the first rotating rod (18) and the second rotating rod (20) to swing back and forth.

3. The coal-fired engine flue gas desulfurization cooler according to claim 2, characterized in that: The toggle assembly comprises a support rod (24) fixedly connected to the inner wall of the limit frame (23), and the support rod (24) is coaxially arranged with the first rotating rod (5); a toggle rod (25) is installed on the outer wall of the support rod (24), and the toggle rod (25) can rotate and slide on the support rod (24); a third protrusion (26) is fixedly connected to the outer wall of the toggle rod (25), and the third protrusion (26) extends between the first rotating rod (18) and the second rotating rod (20); a long gear (27) is fixedly installed on the outer wall of the toggle rod (25), and the long gear (27) is coaxially sleeved on the outer wall of the support rod (24); a collar (36) is installed on the outer wall of the support rod (24) to rotate away from the first rotating rod (18), and a third spring (39) is installed between the long gear (27) and the collar (36); A limiting ring (30) is fixedly installed on the outer wall of the support rod (24) at a side close to the desulfurization tower (1); a stepped protrusion (37) is provided on the outer wall of the limiting ring (30); the stepped protrusion (37) has four horizontal edges of different depths and arranged alternately, and the horizontal edges are connected end to end by oblique edges; a transmission connecting rod (29) is fixedly connected to the outer wall of the toggle rod (25), and the transmission connecting rod (29) abuts against the stepped protrusion (37); A motor is installed on the outer wall of the limiting frame (23); a transmission shaft of the motor passes through the outer wall of the limiting frame (23) and is fixedly connected to a transmission gear (28); the transmission gear (28) is meshed with a long gear (27).

4. The coal-fired engine flue gas desulfurization cooler according to claim 1, characterized in that: The liquid supply component comprises a water circulation pipe (34) fixedly connected to the outer wall of the bottom of the desulfurization tower (1), the other side of the water circulation pipe (34) is connected to a water pump (14), the water outlet of the water pump (14) is connected to a connecting rod (4), the outer wall of the connecting rod (4) is provided with two docking holes (38), and the first rotating rod (5) and the second rotating rod (6) are respectively rotatably connected to the two docking holes (38), a liquid supply pipe (9) is provided inside the connecting rod (4), the water inlet of the liquid supply pipe (9) is docked with the water outlet of the water pump (14), and the water outlet of the liquid supply pipe (9) is respectively docked with the first outlet pipe (10) and the second outlet pipe (11).

5. The coal-fired engine flue gas desulfurization cooler according to claim 4, characterized in that: The liquid supply pipe (9), the first water outlet pipe (10) and the second water outlet pipe (11) are all elliptical pipes, and the centers of the circles at the joints coincide.

6. The coal-fired engine flue gas desulfurization cooler according to any one of claims 1 to 5, characterized in that: A pressure sensor switch (31) is fixedly installed on the inner wall of the desulfurization tower (1) below the filter screen (7).

7. The coal-fired engine flue gas desulfurization cooler according to any one of claims 1 to 5, characterized in that: A heat exchange pipeline system is also installed on the top of the desulfurization tower (1).

8. The coal-fired engine flue gas desulfurization cooler according to claim 2, characterized in that: The second transmission wheel (35) and the first transmission wheel (16) are sprocket wheels, and the transmission belt (17) is a chain.

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