A dust separation device for treating cement kiln flue gas

Abstract

The present invention relates to the technical field of cement production and processing equipment, and discloses a dust separation device for treating cement kiln flue gas, comprising a dust collector, a main bracket, an air inlet pipe, a conveying pipe and an exhaust pipe. The exhaust pipe is provided with a water trough, and a retaining ring is fixedly connected to the upper end of the water trough. The retaining ring is provided with two pipe holes, and a connecting plate is fixedly connected to the upper end of the retaining ring. Since the water trough is arranged inside the exhaust pipe, the airflow of the dust collector is avoided from being affected. In the prior art, a heat conducting pipe is directly wound around the outer wall of the exhaust pipe, although it also plays a role in cooling the exhaust pipe and utilizing the waste heat. The dust collector of the present application utilizes the working principle of a cyclone dust collector, that is, the centrifugal force generated by the rotating dust-laden gas is utilized to separate dust from the airflow. The provision of the heat conducting pipe will affect the flow of the airflow inside the dust collector, thereby reducing the effect of dust separation in the flue gas.

Description

Technical Field

[0001] The invention belongs to the technical field of cement production and processing equipment, and in particular relates to a dust separation device for treating cement kiln flue gas. Background Art

[0002] Cement kiln belongs to the category of building materials equipment, is a type of lime kiln, and is the main equipment in the dry and wet production lines of cement clinker. Cement kiln is mainly used to calcine cement clinker. Due to the high calcination temperature, large amount of exhaust gas and relatively high concentration of smoke emission in dry cement kiln, cement enterprises must achieve ultra-low emissions of pollutants.

[0003] Existing flue gas treatment devices usually use bag-type dust collectors, cyclone dust collectors and other equipment. In the prior art, a waste heat recovery structure is set up during the flue gas treatment process through the above-mentioned equipment. On the one hand, the equipment is cooled down, and on the other hand, waste heat is recovered to save energy. However, in the process of using the cyclone dust collector for flue gas treatment, the heat pipe is wrapped around the outer wall of the exhaust pipe during waste heat recovery, thereby affecting the airflow flow inside the cyclone dust collector, which in turn affects the effect of the cyclone dust collector on dust purification and separation in the flue gas. At the same time, although a cleaning structure is set up in the prior art to clean the inside of the cyclone dust collector, its sealing is low, which will also affect the airflow flow inside the cyclone dust collector, thereby reducing the effect of dust purification and separation in the flue gas.

[0004] Therefore, the existing flue gas treatment devices cannot meet the needs in actual use, so there is an urgent need for improved technologies to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a dust separation device for treating cement kiln flue gas to solve the above-mentioned problems.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a dust separation device for treating flue gas from a cement kiln, comprising a dust collecting cylinder, a main bracket, an air inlet pipe, a delivery pipe and an exhaust pipe 1, wherein a holder is welded on the dust collecting cylinder, a clamping plate is welded on the main bracket, the dust collecting cylinder is mounted on the main bracket through the clamping plate and the holder, the exhaust pipe 1 is mounted on the upper end of the dust collecting cylinder and the exhaust pipe 1 extends to the inside of the dust collecting cylinder, the air inlet pipe is mounted on the side wall of the dust collecting cylinder, a left bracket and a right bracket are welded on both sides of the main bracket, a water injection mechanism 1 and a water injection mechanism 2 are arranged on the left bracket, and .... A power generation device is installed on the right bracket, a spiral heat conduction pipe is provided on the outer wall of the lower half of the dust collector, and a transition box is fixedly connected to the bottom end of the dust collector, and a dust collecting box is movably engaged at the end of the transition box away from the dust collector, and a cleaning mechanism is also provided between the main bracket and the bottom end of the dust collector, a water trough is provided on the exhaust pipe 1, a retaining ring is fixedly connected to the upper end of the water trough, two pipe holes are provided on the retaining ring, a connecting plate is fixedly connected to the upper end of the retaining ring, the delivery pipe and the connecting plate are installed by bolts, and the exhaust pipe 1 is connected to the delivery pipe.

[0008] Furthermore, the water injection mechanism includes a water tank, an electric cylinder and a water inlet pipe. The water tank is fixedly connected to the top of the left bracket, and an electric cylinder is installed on the outer wall of the water tank. The output end of the electric cylinder is fixedly connected to a baffle. A drain outlet is provided at a position near the bottom of one side wall of the water tank. The other end of the baffle extends to a drain outlet and fits with the drain outlet. One end of the drain outlet is fixedly connected to a water inlet pipe, and the other end of the water inlet pipe passes through a connecting plate and is connected to a pipe hole near the water tank.

[0009] Furthermore, a buoyancy level gauge and an ultrasonic level gauge are installed on the outer wall of the exhaust pipe 1, and the detection ends of the buoyancy level gauge and the ultrasonic level gauge pass through the outer wall of the exhaust pipe 1 and extend to the inside of the water tank. A control device is also installed on the left bracket. The buoyancy level gauge, the ultrasonic level gauge and the electric cylinder 1 are electrically connected to the control device. A recovery pipe 1 is connected to the pipe hole away from the water tank 1, and the other end of the recovery pipe 1 is connected to the power generation device.

[0010] Furthermore, the second water injection mechanism includes a second water tank, a motor and a second water inlet pipe. The second water tank is fixedly connected to the middle part of the left bracket. A second drain port is provided on the side wall of the second water tank near the bottom. One end of the second water inlet pipe is connected to the second drain port, and the other end of the second water inlet pipe is connected to one end of the heat conduction pipe. The other end of the heat conduction pipe is connected to a second recovery pipe, and the second recovery pipe is connected to the power generation device away from one end of the heat conduction pipe.

[0011] Furthermore, a motor 1 is fixedly connected to the middle part of the left bracket, a gear 3 is fixedly installed on the output end of the motor 1, a gear 4 is rotatably installed on the side wall of the water tank 2, the gear 4 is coaxially fixedly connected with a baffle 2, the baffle 2 is arranged inside the water tank 2, the gear 4 is arranged outside the water tank 2, and the gear 4 is meshingly connected with the gear 3, the baffle 2 is circular, and an arc-shaped through groove is provided on the baffle 2, and the baffle 2 is in contact with the drain outlet 2.

[0012] Furthermore, a conical cylinder is fixedly connected to the interior of the transition box, a material discharge trough is provided between the bottom edge of the conical cylinder and the transition box, the material discharge trough is arranged in a ring shape, and two electric cylinders 2 are also installed on the main bracket, and the output end of the electric cylinder 2 is fixedly connected to the bottom end of the dust collecting box.

[0013] Furthermore, the cleaning mechanism includes a cleaning rod, a connecting shaft, gear one and motor two. The connecting shaft is rotatably mounted on the conical cylinder, and the dust box is slidingly matched with the connecting shaft. The motor two is fixedly connected to the main bracket near the lower end. The output end of the motor two is fixedly mounted with gear two, and the connecting shaft is fixedly mounted with gear one, and gear two is meshingly connected with gear one. The connecting shaft is hollow and a sleeve is fixedly connected to one end of the connecting shaft close to the dust removal cylinder. Two sliding rods are slidably mounted inside the sleeve, a spring is fixedly connected between the two sliding rods, and the ends of the two sliding rods away from each other are respectively fixedly connected to the cleaning rod. Two mounting grooves are provided on the inner wall of the dust removal cylinder, and the cleaning rod is movably engaged with the mounting grooves.

[0014] Furthermore, a second dust removal device is installed on the main bracket, and an exhaust pipe 2 is provided on the second dust removal device. One end of the conveying pipe away from the exhaust pipe 1 is connected to the second dust removal device, and a branch pipe is fixedly connected to the bottom end of the connecting shaft, and the other end of the branch pipe is connected to the second dust removal device.

[0015] The present invention has the following beneficial effects:

[0016] 1. By setting up structures such as a water tank and a retaining ring, the high-temperature flue gas can directly heat the exhaust pipe 1, thereby heating the water in the water tank, avoiding the problem in the prior art of winding the heat-conducting pipe around the outer wall of the exhaust pipe 1 to recycle the waste heat, which affects the flow of the airflow in the dust removal cylinder and reduces the dust separation effect in the flue gas.

[0017] 2. Through the setting of the buoyancy level gauge and the ultrasonic level gauge, water can be automatically added to the water tank during the flue gas treatment process to ensure that the water level in the water tank is sufficient and the utilization rate of the waste heat is improved. Through the cooperation of motor one, baffle two, gear three and gear four, water can be automatically added to the inside of the heat transfer pipe when it is inconvenient to use the level gauge to ensure that the water level in the heat transfer pipe is sufficient and the utilization rate of the waste heat is further improved.

[0018] 3. Through the setting of the cleaning mechanism, motor 2 can be used to drive gear 2 to rotate, the rotation of gear 2 drives gear 1 to rotate, gear 1 drives the sleeve to rotate through the connecting shaft, the sleeve drives the cleaning rod to rotate, and the cleaning rod scrapes the dust attached to the inner wall of the dust collector to ensure the dust collection effect of the dust collector on the dust in the flue gas.

[0019] 4. Through the arrangement of structures such as sleeves and slide rods, the purified flue gas can be used to drive the slide rods to move away from each other, so that the slide rods can push the cleaning rods to engage in the installation grooves, thereby ensuring the flatness of the inner wall of the dust collector and preventing the cleaning rods from affecting the flow of air inside the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 It is a schematic diagram of the structure of the exhaust pipe 1 in the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure between the exhaust pipe 1 and the delivery pipe in the present invention;

[0025] Figure 5 It is a schematic diagram of the distribution of the buoyancy level gauge and the ultrasonic level gauge in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the water injection mechanism 1 in the present invention;

[0027] Figure 7 It is a structural schematic diagram of the water injection mechanism 2 in the present invention;

[0028] Figure 8 It is a structural schematic diagram of the baffle 2 in the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the cleaning mechanism in the present invention;

[0030] Fig.10 It is a structural schematic diagram of the transition box in the present invention;

[0031] Fig.11It is a schematic diagram of the internal structure of the sleeve in the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Dust removal cylinder; 2. Exhaust pipe 1; 3. Delivery pipe; 4. Water inlet pipe 1; 5. Recovery pipe 1; 6. Power generation device; 7. Inlet pipe; 8. Holder; 9. Pallet; 10. Right bracket; 11. Heat transfer pipe; 12. Transition box; 13. Dust collection box; 14. Electric cylinder 1; 15. Branch pipe; 16. Exhaust pipe 2; 17. Second dust removal device; 18. Main bracket; 19. Motor 1; 20. Left bracket; 21. Water tank 2; 22. Water tank 1; 23. Gear 1; 24. Gear 2; 25. Motor 2; 26. Recovery pipe 2; 27. Electric cylinder 2; 28. Water tank; 29. ​​Pipe hole; 30. Retaining ring; 31. Connecting plate; 32. Buoyancy level gauge; 33. Baffle 1; 34. Gear 3; 35. Gear 4; 36. Baffle 2; 37. Connecting shaft; 38. Sleeve; 39. Cleaning rod; 40. Mounting groove; 41. Sliding rod; 42. Conical cylinder; 43. Feed chute; 44. Spring; 45. Water inlet pipe 2; 46. Through groove; 47. Ultrasonic level gauge. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] See also Figure 1-11 As shown, the present invention is a dust separation device for treating flue gas from a cement kiln, comprising a dust collecting tube 1, a main bracket 18, an air intake pipe 7, a conveying pipe 3 and an exhaust pipe 2. A holder 8 is welded on the dust collecting tube 1, a clamping plate 9 is welded on the main bracket 18, the dust collecting tube 1 is mounted on the main bracket 18 through the clamping plate 9 and the holder 8, the exhaust pipe 2 is mounted on the upper end of the dust collecting tube 1 and the exhaust pipe 2 extends to the inside of the dust collecting tube 1, the air intake pipe 7 is mounted on the side wall of the dust collecting tube 1, the high-temperature flue gas generated by the cement kiln enters the inside of the dust collecting tube 1 through the air intake pipe 7, after the flue gas is purified inside the dust collecting tube 1, the dust falls into the bottom of the dust collecting tube 1, and the purified flue gas is discharged from the dust collecting tube 1 through the exhaust pipe 2.

[0036] A left bracket 20 and a right bracket 10 are welded to both sides of the main bracket 18. A water injection mechanism 1 and a water injection mechanism 2 are provided on the left bracket 20. A power generation device 6 is installed on the right bracket 10. A spiral heat pipe 11 is provided on the outer wall of the lower half of the dust collector 1. The water injection mechanism 2 injects water into the heat pipe 11. The high-temperature flue gas entering the dust collector 1 heats the water inside the heat pipe 11. The generated steam is transported to the power generation device 6, and electricity is generated by the power generation device 6. In this way, the waste heat in the flue gas treatment process can be fully utilized, which is more energy-saving, and the dust collector 1 can be cooled to increase the service life of the dust collector 1.

[0037] A transition box 12 is fixedly connected to the bottom end of the dust collecting cylinder 1, and a dust collecting box 13 is movably engaged with the end of the transition box 12 away from the dust collecting cylinder 1. A cleaning mechanism is also provided between the main bracket 18 and the bottom end of the dust collecting cylinder 1. A water tank 28 is provided on the exhaust pipe 2, and a retaining ring 30 is fixedly connected to the upper end of the water tank 28. Two pipe holes 29 are provided on the retaining ring 30, and a connecting plate 31 is fixedly connected to the upper end of the retaining ring 30. The delivery pipe 3 and the connecting plate 31 are installed by bolts. The exhaust pipe 2 and the delivery pipe 3 are connected. The water injection mechanism injects water into the water tank 28. The high-temperature flue gas entering the dust collecting cylinder 1 can heat the exhaust pipe 2, thereby heating the water in the water tank 28, and the generated steam is also transported to the power generation device 6. The power generation device 6 generates electricity, and the waste heat in the flue gas treatment process is fully utilized again to improve the utilization efficiency of the waste heat. In addition, since the water tank 28 is arranged inside the exhaust pipe 2, the air flow of the dust collector 1 is avoided. In the prior art, the heat transfer pipe 11 is directly wrapped around the outer wall of the exhaust pipe 2. Although it also plays a role in cooling the exhaust pipe 2 and utilizing the waste heat, the dust collector 1 of the present application utilizes the working principle of the cyclone dust collector, that is, the centrifugal force generated by the rotating dust-containing gas is utilized to separate the dust from the airflow. The setting of the heat transfer pipe 11 will affect the flow of the airflow inside the dust collector 1, thereby reducing the effect of separating the dust in the flue gas.

[0038] The water injection mechanism 1 includes a water tank 122, an electric cylinder 14 and a water inlet pipe 14. The water tank 122 is fixedly connected to the top of the left bracket 20, and the electric cylinder 14 is installed on the outer wall of the water tank 122. The output end of the electric cylinder 14 is fixedly connected to a baffle 133. A drain port 1 is provided at a position near the bottom of the side wall of the water tank 122. The other end of the baffle 133 extends to a drain port and fits with the drain port 1. The baffle 133 is used to control the opening and closing of the drain port 1. One end of the drain port 1 is fixedly connected to A water inlet pipe 4, the other end of which passes through a connecting plate 31 and is connected to a pipe hole 29 near a water tank 22, a buoyancy level gauge 32 and an ultrasonic level gauge 47 are installed on the outer wall of the exhaust pipe 2, and the detection ends of the buoyancy level gauge 32 and the ultrasonic level gauge 47 pass through the outer wall of the exhaust pipe 2 and extend to the interior of the water tank 28, and the buoyancy level gauge 32 and the ultrasonic level gauge 47 are used to monitor the water level of the water tank 28, thereby automatically controlling the injection of water into the water tank 28.

[0039] A control device is also installed on the left bracket 20. The buoyancy level gauge 32, the ultrasonic level gauge 47 and the electric cylinder 14 are all electrically connected to the control device. The pipe hole 29 away from the water tank 22 is connected to the recovery pipe 5. The other end of the recovery pipe 5 is connected to the power generation device 6. When it is necessary to fill the water tank 28 with water, the electric cylinder 14 is started, and the electric cylinder 14 drives the baffle 33 to move upward, thereby opening the drain port 1, and the water flows from the inside of the water tank 22 through the water inlet pipe 4 into the water tank 28. When the water in the water tank 28 reaches the position of the buoyancy level gauge 32, the buoyancy level gauge 32 transmits a signal to the control device, and the control device The electric cylinder 14 is controlled to move again, so that the electric cylinder 14 drives the baffle 33 to block the drain outlet 1 to stop water injection into the water tank 28. In order to reserve a part of space for the steam generated subsequently, when the water in the water tank 28 is heated and evaporated, the steam flows into the power generation device 6 through the recovery pipe 5, the water volume decreases and the water level drops. When the water level drops to a preset low water level, the ultrasonic liquid level meter 47 detects the low water level and transmits a signal to the control device. The control device controls the electric cylinder 14 to move again, so that the electric cylinder 14 drives the baffle 33 to disengage from the drain outlet 1, and automatically injects water into the water tank 28 again, thereby improving work efficiency.

[0040] The second water injection mechanism includes a second water tank 21, a motor 19 and a second water inlet pipe 45. The second water tank 21 is fixedly connected to the middle part of the left bracket 20. A second drain port is provided on the side wall of the second water tank 21 near the bottom. One end of the second water inlet pipe 45 is connected to the second drain port, and the other end of the second water inlet pipe 45 is connected to one end of the heat conducting pipe 11. The other end of the heat conducting pipe 11 is connected to a second recovery pipe 26. The end of the recovery pipe 26 away from the heat conducting pipe 11 is connected to the power generation device 6. The middle part of the left bracket 20 is also fixedly connected to a motor 19. The output end of the motor 19 is fixedly installed. There is a gear three 34, and a gear four 35 is rotatably installed on the side wall of the water tank two 21. The gear four 35 is coaxially fixed with a baffle two 36. The baffle two 36 is arranged inside the water tank two 21, and the gear four 35 is arranged outside the water tank two 21. The gear four 35 is meshingly connected with the gear three 34. The baffle two 36 is circular, and the baffle two 36 is provided with an arc-shaped through groove 46. The baffle two 36 is fitted with the drain outlet two. The setting of the gear four 35 and the gear three 34 is to reduce the rotation speed of the baffle two 36, thereby controlling the time of water injection into the heat conduction pipe 11.

[0041] When it is necessary to inject water into the heat pipe 11, since the heat pipe 11 is spiral, it is inconvenient for the liquid level meter to measure the water level of the heat pipe 11. Therefore, the second water injection mechanism intermittently injects water into the heat pipe 11, and the motor 19 is started. The motor 19 drives the gear 34 to rotate, the gear 34 drives the gear 4 35 to rotate, and the gear 4 35 drives the baffle 2 36 to rotate. When the through groove 46 of the baffle 2 36 rotates to the second drain port, the water in the water tank 21 flows into the heat pipe 11 through the water inlet pipe 2 45, and the baffle 2 36 continues to rotate for a period of time until the through groove 46 is separated from the second drain port, and the water injection time ends. The baffle 2 36 continues to rotate, and at the same time, the water in the heat pipe 11 is heated and evaporated, and the steam enters the power generation device 6 through the recovery pipe 2 26, and the water volume continues to decrease. After the baffle 2 36 rotates for a period of time, it drives the through groove 46 to rotate to the second drain port again, and water is injected into the heat pipe 11 again.

[0042] A conical cylinder 42 is fixedly connected to the interior of the transition box 12, and a feed chute 43 is provided between the bottom edge of the conical cylinder 42 and the transition box 12. The feed chute 43 is arranged in a ring shape. Two electric cylinders 27 are also installed on the main bracket 18. The output end of the electric cylinder 27 is fixedly connected to the bottom end of the dust box 13. When the electric cylinder 27 drives the dust box 13 to move, the feed chute 43 can be sealed to ensure the sealing inside the dust collection tube 1, thereby avoiding affecting the air flow inside the dust collection tube 1, and the dust collection box 13 can also be moved downward to maintain a certain distance from the transition box 12 for convenient dust collection.

[0043] The cleaning mechanism includes a cleaning rod 39, a connecting shaft 37, a gear 1 23 and a motor 25. The connecting shaft 37 is rotatably mounted on the conical cylinder 42, and the dust box 13 and the connecting shaft 37 are slidably matched. The motor 25 is fixedly connected to the main bracket 18 near the lower end. The output end of the motor 25 is fixedly mounted with a gear 24. The connecting shaft 37 is fixedly connected with a gear 1 23, and the gear 24 is meshed with the gear 1 23. The connecting shaft 37 is hollow and a sleeve 38 is fixedly connected to one end of the connecting shaft 37 near the dust collecting cylinder 1. Two slide bars 41 are slidably mounted inside the sleeve 38, and a spring 44 is fixedly connected between the two slide bars 41. , and the ends of the two sliding rods 41 away from each other are respectively fixedly connected to the cleaning rod 39, and two mounting grooves 40 are provided on the inner wall of the dust removal cylinder 1, and the cleaning rod 39 is movably engaged with the mounting grooves 40. The electric energy generated by the power generation device 6 can be stored. When the inside of the dust removal cylinder 1 needs to be cleaned, the electric energy generated by the power generation device 6 powers the motor 25, and the motor 25 drives the gear 24 to rotate, and the rotation of the gear 24 drives the gear 1 23 to rotate, and the gear 1 23 drives the sleeve 38 to rotate through the connecting shaft 37, and the sleeve 38 drives the cleaning rod 39 to rotate, and the cleaning rod 39 scrapes the dust attached to the inner wall of the dust removal cylinder 1.

[0044] A second dust removal device 17 is also installed on the main bracket 18, and an exhaust pipe 16 is provided on the second dust removal device 17. The second dust removal device 17 can be set as a bag-type dust removal or an electrostatic dust removal, so as to effectively remove small particles of dust in the flue gas discharged from the inside of the dust removal cylinder 1, thereby improving the dust purification and separation effect. The end of the conveying pipe 3 away from the exhaust pipe 2 is connected to the second dust removal device 17, and the bottom end of the connecting shaft 37 is fixedly connected to a branch pipe 15, and the other end of the branch pipe 15 is connected to the second dust removal device 17. On the one hand, the structure for driving the cleaning rod 39 of the present application is arranged at the bottom of the dust removal cylinder 1, which can minimize the impact on the rotating airflow inside the dust removal cylinder 1. On the other hand, when the flue gas inside the dust removal cylinder 1 is After preliminary purification, it enters the conveying pipe 3, and after purification again by the second dust removal device 17, part of the airflow is discharged from the exhaust pipe 16, and the other part of the airflow passes through the branch pipe 15 and enters the inside of the connecting shaft 37, and then enters the inside of the sleeve 38. The airflow will push the two sliding rods 41 to move away from each other, so that the sliding rod 41 can push the cleaning rod 39 to engage in the installation groove 40. The dust removal barrel 1, the transition box 12, and the dust collecting box 13 form an integral sealing system. Although the connecting shaft 37 extends to the outside, the contact area when the connecting shaft 37 is connected to the sealing system is small, so the sealing performance of the above-mentioned sealing system can be maximized to ensure the dust purification and separation effect of the flue gas in the sealing system.

[0045] Working principle: The high-temperature flue gas generated by the cement kiln enters the dust removal tube 1 through the air inlet pipe 7. The cyclone generated inside the dust removal tube 1 separates the dust in the flue gas. At the same time, the water in the water tank 22 is injected into the water tank 28 of the exhaust pipe 2 through the water inlet pipe 4, and the water in the water tank 21 is injected into the heat pipe 11 through the water inlet pipe 2 45. The high-temperature flue gas in the dust removal tube 1 will heat and evaporate the water in the water tank 28 and the heat pipe 11, and enter the power generation device 6 through the recovery pipe 1 5 and the recovery pipe 2 26. The power generation device 6 is a prior art and will not be described in detail here. The power generation device 6 uses Steam is used to generate electricity and store energy, and the purified flue gas will pass through the exhaust pipe 2, the conveying pipe 3, the secondary dust removal device 17, the branch pipe 15, and the connecting shaft 37 into the interior of the sleeve 38, and the airflow pushes the slide rod 41 so that the cleaning rod 39 is stuck in the installation groove 40. When the flue gas treatment is completed, the interior of the sleeve 38 will not continue to be inflated. Under the action of the spring 44, the slide rod 41 drives the cleaning rod 39 to separate from the installation groove 40, and the electric energy generated by the power generation device 6 drives the motor 25 to start, which can subsequently drive the cleaning rod 39 to rotate to clean the inner wall of the dust collector 1, thereby ensuring the dust separation effect of the dust collector 1.

[0046] As described above, in order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

Claims

1. A dust separation device for treating flue gas from a cement kiln, comprising a dust collecting tube (1), a main support (18), an air intake pipe (7), a delivery pipe (3) and an exhaust pipe (2), wherein a holder (8) is welded to the dust collecting tube (1), a clamping plate (9) is welded to the main support (18), the dust collecting tube (1) is mounted on the main support (18) via the clamping plate (9) and the holder (8), the exhaust pipe (2) is mounted on the upper end of the dust collecting tube (1) and the exhaust pipe (2) extends into the interior of the dust collecting tube (1), and the air intake pipe (7) is mounted on the side wall of the dust collecting tube (1), characterized in that: A left bracket (20) and a right bracket (10) are welded to both sides of the main bracket (18); a water injection mechanism 1 and a water injection mechanism 2 are provided on the left bracket (20); a power generation device (6) is installed on the right bracket (10); a spiral heat conduction pipe (11) is provided on the outer wall of the lower half of the dust removal cylinder (1); a transition box (12) is fixedly connected to the bottom end of the dust removal cylinder (1); a dust collecting device (12) is movably engaged at one end of the transition box (12) away from the dust removal cylinder (1) The exhaust pipe (2) is provided with a water tank (28), the upper end of the water tank (28) is fixedly connected with a retaining ring (30), the retaining ring (30) is provided with two pipe holes (29), the upper end of the retaining ring (30) is fixedly connected with a connecting plate (31), the delivery pipe (3) and the connecting plate (31) are mounted by bolts, and the exhaust pipe (2) and the delivery pipe (3) are connected; The water injection mechanism 1 comprises a water tank 1 (22), an electric cylinder 1 (14) and a water inlet pipe 1 (4); the water tank 1 (22) is fixedly connected to the top of the left bracket (20), and the electric cylinder 1 (14) is installed on the outer wall of the water tank 1 (22); the output end of the electric cylinder 1 (14) is fixedly connected to a baffle 1 (33); a drain port 1 is provided at a position near the bottom of the side wall of the water tank 1 (22); the other end of the baffle 1 (33) extends to a drain port and fits with the drain port 1; one end of the drain port 1 is fixedly connected to a water inlet pipe 1 (4); the other end of the water inlet pipe 1 (4) passes through the connecting plate (31) and is connected to a pipe hole (29) near the water tank 1 (22); The second water injection mechanism comprises a second water tank (21), a motor (19) and a second water inlet pipe (45). The second water tank (21) is fixedly connected to the middle part of the left bracket (20). A second water outlet is provided on the side wall of the second water tank (21) near the bottom. One end of the second water inlet pipe (45) is connected to the second water outlet, and the other end of the second water inlet pipe (45) is connected to one end of the heat conducting pipe (11). The other end of the heat conducting pipe (11) is connected to a second recovery pipe (26). The end of the second recovery pipe (26) away from the heat conducting pipe (11) is connected to the power generation device (6). The middle part of the left bracket (20) is also fixedly connected to a motor 1 (19), and a gear 3 (34) is fixedly installed on the output end of the motor 1 (19). A gear 4 (35) is rotatably installed on the side wall of the water tank 2 (21), and the gear 4 (35) is coaxially fixedly connected to a baffle 2 (36). The baffle 2 (36) is arranged inside the water tank 2 (21), and the gear 4 (35) is arranged outside the water tank 2 (21), and the gear 4 (35) is meshedly connected with the gear 3 (34). The baffle 2 (36) is circular, and an arc-shaped through groove (46) is provided on the baffle 2 (36). The baffle 2 (36) is in contact with the drain outlet 2; The cleaning mechanism comprises a cleaning rod (39), a connecting shaft (37), a gear 1 (23) and a motor 2 (25); the connecting shaft (37) is rotatably mounted on the conical cylinder (42), and the dust collecting box (13) and the connecting shaft (37) are slidably matched; the motor 2 (25) is fixedly connected to a position near the lower end of the main bracket (18); the output end of the motor 2 (25) is fixedly mounted with a gear 2 (24); the connecting shaft (37) is fixedly connected with the gear 1 (23); the gear 2 (24) and the gear 1 are connected to each other. (23) meshing connection, the connecting shaft (37) is hollow and one end of the connecting shaft (37) close to the dust removal cylinder (1) is fixedly connected to a sleeve (38), two sliding rods (41) are slidably mounted inside the sleeve (38), a spring (44) is fixedly connected between the two sliding rods (41), and the ends of the two sliding rods (41) that are away from each other are respectively fixedly connected to cleaning rods (39), and two mounting grooves (40) are provided on the inner wall of the dust removal cylinder (1), and the cleaning rods (39) are movably engaged with the mounting grooves (40).

2. A dust separation device for treating cement kiln flue gas according to claim 1, characterized in that: A buoyancy level gauge (32) and an ultrasonic level gauge (47) are mounted on the outer wall of the exhaust pipe (2). The detection ends of the buoyancy level gauge (32) and the ultrasonic level gauge (47) penetrate the outer wall of the exhaust pipe (2) and extend to the interior of the water tank (28). A control device is also mounted on the left bracket (20). The buoyancy level gauge (32), the ultrasonic level gauge (47) and the electric cylinder (14) are electrically connected to the control device. A recovery pipe (5) is connected to the pipe hole (29) away from the water tank (22). The other end of the recovery pipe (5) is connected to the power generation device (6).

3. The dust separation device for treating cement kiln flue gas according to claim 1, characterized in that: A conical cylinder (42) is fixedly connected to the interior of the transition box (12), a material discharge trough (43) is provided between the bottom edge of the conical cylinder (42) and the transition box (12), and the material discharge trough (43) is arranged in a ring shape. Two electric cylinders (27) are also installed on the main bracket (18), and the output end of the electric cylinder (27) is fixedly connected to the bottom end of the dust collecting box (13).

4. The dust separation device for treating cement kiln flue gas according to claim 1, characterized in that: A second dust removal device (17) is also mounted on the main support (18), and a second exhaust pipe (16) is provided on the second dust removal device (17). One end of the delivery pipe (3) away from the first exhaust pipe (2) is connected to the second dust removal device (17), and a branch pipe (15) is fixedly connected to the bottom end of the connecting shaft (37), and the other end of the branch pipe (15) is connected to the second dust removal device (17).

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