A water-saving water curtain dust removal device

Abstract

The present invention provides a water-saving water curtain dust removal device, which belongs to the technical field of environmental protection equipment. It includes a water tank and an air outlet pipe connected to the opening of the water tank, a plurality of air inlet pipes are arranged at the bottom of the water tank, a wastewater treatment mechanism is arranged in the middle of the air outlet pipe, and the wastewater treatment mechanism includes a functional pipe fixed on the pipe wall of the air outlet pipe, a rotating shaft is rotatably connected in the functional pipe, a water retaining driving wheel is fixedly arranged on the rotating shaft, a plurality of nozzles are arranged on the pipe wall of the air outlet pipe, each nozzle is connected to the water outlet end of a water pump, the water inlet end of the water pump is located below the water surface of the water tank, the functional pipe is rotatably connected to the rotating shaft, the lower end part of the water retaining driving wheel is located in the functional pipe, the water outlet direction of each nozzle is toward the direction of driving the water retaining driving wheel to rotate, the functional pipe has a water filtering section located above the water surface of the water tank, the lower end of the functional pipe extends out of the water tank, and the lower end of the functional pipe has a valve. The present invention has the advantages of high dust removal efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental protection equipment and relates to a water-saving water curtain dust removal device. Background Art

[0002] Dust removal equipment is a commonly used environmental protection equipment in industrial and mining enterprises. The water mist settling method can effectively separate the dust in the exhaust gas. In order to improve the settling efficiency and the dust removal effect of the exhaust gas, the conventional method is to extend the path of water mist settling, such as setting a spray system on the top of a long chimney to extend the path of water mist from top to bottom to increase the probability of contact with particles in the exhaust gas. However, this method makes the dust removal structure occupy a large size and high cost, and the water mist seriously washes the inner wall of the chimney. In addition, the water consumption is large, and the water purification and recovery cost is also high. In short, the installation space of water mist dust removal equipment in the prior art is limited, the equipment maintenance cost is high, and the water consumption is large, which is not conducive to cost control and the expansion of application scenarios.

[0003] As we all know, increasing the contact intensity between water and exhaust gas (i.e. increasing the water pressure) can greatly improve the dust removal effect and efficiency, but the energy consumption is also relatively high, the water utilization rate is reduced, the wear and tear of high-pressure water on equipment is also aggravated, the nozzle has higher requirements for water, and the wastewater is difficult to reuse. Summary of the invention

[0004] The purpose of the present invention is to provide a water-saving water curtain dust removal device in view of the above-mentioned problems existing in the prior art. The technical problem to be solved by the present invention is how to improve the exhaust gas dust removal effect and efficiency.

[0005] The purpose of the present invention can be achieved through the following technical solutions: a water-saving water curtain dust removal device, characterized in that it includes a water tank and an air outlet pipe connected to the opening of the water tank, a plurality of air inlet pipes are arranged at the bottom of the water tank, the air outlet end of the air inlet pipe is located above the water surface of the water tank, a wastewater treatment mechanism is arranged in the middle of the air outlet pipe, the wastewater treatment mechanism includes a functional pipe fixed on the wall of the air outlet pipe, a rotating shaft is rotatably connected in the functional pipe, a water-blocking driving wheel is fixedly arranged on the rotating shaft, a plurality of nozzles are arranged on the wall of the air outlet pipe, and each nozzle is connected to the water outlet of a water pump. The functional pipe is connected to the water tank end, the water inlet end of the water pump is located below the water surface of the water tank, the functional pipe is rotatably connected to the rotating shaft below the water retaining driving wheel, the lower end of the water retaining driving wheel is located in the functional pipe, the water outlet direction of each nozzle is toward the direction driving the water retaining driving wheel to rotate, the functional pipe has a water filtering section located above the water surface of the water tank, a spiral and elastic washing strip is arranged in the functional pipe, the washing strip has bristles, the upper end of the washing strip is fixedly connected to the lower end of the rotating shaft, the lower end of the functional pipe extends out of the water tank, and the lower end of the functional pipe has a valve.

[0006] Furthermore, an impeller located at the outlet of the air outlet pipe is fixedly provided on the upper end of the rotating shaft.

[0007] Furthermore, a shielding cover is fixedly provided on the upper end of the air outlet pipe, and an air outlet gap is provided between the shielding cover and the air outlet pipe.

[0008] Furthermore, the functional pipe has a water inlet section located above the water filtration section and a sedimentation section located below the water filtration section.

[0009] Furthermore, the lower end of the functional pipe has a slag removal pipe with a hole diameter larger than the diameter of the deposition section, the upper end of the valve rests on the step surface at the connection between the deposition section and the slag removal pipe, and the lower end of the washing bar is fixedly connected to the valve.

[0010] Furthermore, a guide rod is fixedly provided at the bottom of the slag removal pipe, a guide hole cooperating with the guide rod is opened at the axis of the valve, the valve is slidably connected to the guide rod, and a slag outlet is provided on the side of the slag removal pipe.

[0011] Furthermore, a plurality of permanent magnet blocks are evenly buried in the inner circumference of the valve, and the slag removal pipe has a plurality of iron blocks corresponding to the permanent magnet strips one by one. When the permanent magnet strips are adsorbed with the iron blocks, the valve blocks the lower end opening of the functional pipe.

[0012] Furthermore, the water tank is connected to a water supply pipe for replenishing water to the water tank.

[0013] As another option, a plurality of permanent magnet blocks are evenly buried in the inner circumference of the valve, and the slag removal pipe has a plurality of electromagnetic blocks corresponding to the permanent magnet strips one by one. When the permanent magnet strips are adsorbed by the electromagnetic blocks, the valve blocks the lower end opening of the functional tube.

[0014] Furthermore, the upper end of the functional pipe is provided with a conical water receiving bucket.

[0015] The nozzles are divided into several groups, each group is on the same circumference of the outlet pipe and is evenly distributed. Each group is arranged longitudinally, and the nozzles between adjacent groups are staggered, so that the nozzles form multiple annular water curtain areas on the outside of the water retaining driving wheel and the inside of the outlet pipe wall. This area is the channel for exhaust gas discharge. Due to the strong water pressure, the water retaining driving wheel can be driven to rotate when the water spraying direction is opposite to the inclination direction of the water retaining driving wheel blades. In order to further increase the rotational torque of the shaft and to further utilize the exhaust gas, an impeller is arranged at the upper end of the shaft. Under the action of the exhaust gas discharge pressure, the impeller can also provide torque for the rotation of the shaft, while alleviating the exhaust pressure of the exhaust gas, so as to increase the probability of exhaust gas contact with the water curtain.

[0016] The water-retaining driving wheel can also prevent high-pressure water from impacting the inner wall of the outlet pipe, and can also collect the dust-reduced wastewater into the functional pipe under the guiding effect of the blades of the water-retaining driving wheel.

[0017] The wastewater after dust reduction enters the filtration section with a filtering effect. When the valve closes the lower end of the functional pipe, the wastewater remains in the functional pipe, and the clean water filtered by the filtration section returns to the water tank. Before the valve is opened, the dust particles in the sewage settle to the lower end of the functional pipe, that is, the sedimentation section, until the valve is opened, part of the wastewater and the dust particles and sludge in the sedimentation section are discharged.

[0018] The scrubbing strip is spiral, similar to a spring, and can be a spring column made of metal or plastic. The bristles can be attached to the scrubbing strip in one piece, or a rubber sleeve with bristles can be set on the scrubbing strip.

[0019] Control of the valve: Since the rotating shaft is fixedly connected to one end of the scrubbing strip, and the valve connected to the lower end of the scrubbing strip is positioned at the lower end of the functional pipe, the spiral scrubbing strip gradually decreases in the process of rotating the rotating shaft, and the rotational recovery torque after being twisted gradually increases. During the process of reducing the spiral diameter, its longitudinal recovery thrust increases. When the rotating shaft rotates to the point where the rotational torque and thrust of the scrubbing strip can overcome the positioning resistance of the valve, the valve is pushed open. During the process of pushing the valve open, the valve rotates and moves downward, so that the waste water and waste residue in the functional pipe are discharged due to the opening of the valve. When the scrubbing strip recovers to the point where its longitudinal thrust and rotational torque are both small, the valve closes the lower end of the functional pipe again under the action of the longitudinal recovery force of the scrubbing strip, and this is repeated.

[0020] During the process of longitudinal movement, twisting and recovery of the scrubbing bar, the bristles on the scrubbing bar clean the inner wall of the functional tube.

[0021] The iron block and the permanent magnet block can realize the positioning of the valve and the slag removal pipe. When positioning, the valve closes the lower end opening of the functional pipe. Similarly, the permanent magnet block and the electromagnetic block can also realize the same function. Moreover, the electromagnetic block has the advantages that the resistance required for the passive opening of the valve is adjustable, that is, the discharge time interval of the wastewater and the proportion of the wastewater discharge volume are adjustable. The electromagnetic block realizes the electromagnetism structure by winding an energized coil on an iron frame. The valve can also be actively opened by changing the magnetic pole, that is, the direction of the energized current. That is, after the electromagnetic block repels the permanent magnet bar or the electromagnetic block is powered off, the valve can be opened by the water pressure in the functional pipe.

[0022] The intake pipe is partially located below the water surface of the water tank, which can cool the exhaust gas.

[0023] Water loss: A portion of water is discharged with the exhaust gas. The sludge in the functional pipe that is cleaned also causes water loss when it is discharged with the functional pipe. The water level in the water tank is maintained through the water supply pipe.

[0024] The device can significantly reduce water consumption. At the same time, due to the high intensity of the water curtain spray, the dust reduction efficiency can be improved and the length of the outlet pipe can be shortened. Compared with the prior art, the water curtain of the device is arranged perpendicular to the axis of the outlet pipe, which can improve the collection of wastewater, and due to the high water pressure, it can greatly reduce the sewage directly entering the water tank without treatment. In the attached figure, in order to better reflect the structure of the functional pipe, the ratio of its diameter to the diameter of the water tank is enlarged, and the size of the water tank is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the dust removal device.

[0026] Figure 2 yes Figure 1 Cross-sectional view along the AA direction (water tank not shown).

[0027] Figure 3 It is a structural diagram of a functional tube.

[0028] Figure 4 yes Figure 3 Cross-sectional view along the BB direction.

[0029] In the figure, 1. water tank; 21. air outlet pipe; 22. air inlet pipe; 3. functional pipe; 31. water filtration section; 32. water inlet section; 33. sedimentation section; 41. rotating shaft; 42. water retaining drive wheel; 43. nozzle; 44. valve; 45. impeller; 46. shielding cover; 5. scrubbing bar; 61. slag removal pipe; 62. guide rod; 63. slag outlet; 64. permanent magnet strip; 65. iron block; 7. water supply pipe; 8. water receiving bucket. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, it includes a water tank 1 and an air outlet pipe 21 connected to the opening of the water tank 1, a plurality of air inlet pipes 22 are arranged at the bottom of the water tank 1, the air outlet end of the air inlet pipe 22 is located above the water surface of the water tank 1, a wastewater treatment mechanism is arranged in the middle of the air outlet pipe 21, and the wastewater treatment mechanism includes a functional pipe 3 fixed on the pipe wall of the air outlet pipe 21, a rotating shaft 41 is rotatably connected in the functional pipe 3, a water-blocking driving wheel 42 is fixedly arranged on the rotating shaft 41, a plurality of nozzles 43 are arranged on the pipe wall of the air outlet pipe 21, each nozzle 43 is connected to the water outlet end of a water pump, the water inlet end of the water pump is located below the water surface of the water tank 1, and the water-blocking driving wheel 42 is fixedly arranged on the rotating shaft 41. The lower end of the driving wheel 42 is located in the functional pipe 3, and the water outlet direction of each nozzle 43 is toward the direction of driving the water-blocking driving wheel 42 to rotate. The functional pipe 3 has a water filtering section 31 located above the water surface of the water tank 1. A spiral, elastic scrubbing strip 5 is arranged in the functional pipe 3, and the scrubbing strip 5 has bristles. The upper end of the scrubbing strip 5 is fixedly connected to the lower end of the rotating shaft 41. The lower end of the functional pipe 3 extends out of the water tank 1. The lower end of the functional pipe 3 has a valve 44. The water tank 1 is connected to a water replenishment pipe 7 for replenishing water to the water tank 1. The upper end of the functional pipe 3 has a conical water receiving bucket 8.

[0032] An impeller 45 located at the outlet of the air outlet pipe 21 is fixedly disposed on the upper end of the rotating shaft 41 .

[0033] A shielding cover 46 is fixedly provided at the upper end of the air outlet pipe 21 , and an air outlet gap is provided between the shielding cover 46 and the air outlet pipe 21 .

[0034] The functional pipe 3 has a water inlet section 32 located above the water filtering section 31 and a sedimentation section 33 located below the water filtering section 31 .

[0035] The lower end of the functional pipe 3 has a slag removal pipe 61 with a hole diameter larger than the diameter of the deposition section 33 . The upper end of the valve 44 abuts against the step surface at the connection between the deposition section 33 and the slag removal pipe 61 . The lower end of the scrubbing bar 5 is fixedly connected to the valve 44 .

[0036] A guide rod 62 is fixedly provided at the bottom of the slag removal pipe 61 , a guide hole matching the guide rod 62 is opened at the axis of the valve 44 , the valve 44 is slidably connected to the guide rod 62 , and a slag outlet 63 is provided on the side of the slag removal pipe 61 .

[0037] like Figure 4 As shown, a plurality of permanent magnet blocks are evenly buried in the circumference of the valve 44, and a plurality of iron blocks 65 corresponding to the permanent magnet strips 64 are provided on the slag removal pipe 61. When the permanent magnet strips 64 and the iron blocks 65 are adsorbed, the valve 44 blocks the lower end opening of the functional pipe 3.

[0038] As another option, a number of permanent magnet blocks are evenly buried in the circumference of the valve 44, and the slag removal pipe 61 has a number of electromagnetic blocks corresponding to the permanent magnet strips 64 one by one. When the permanent magnet strips 64 are adsorbed with the electromagnetic blocks, the valve 44 blocks the lower end opening of the functional pipe 3.

[0039] The nozzles 43 are divided into several groups, each group is on the same circumference of the outlet pipe 21 and is evenly distributed. Each group is arranged longitudinally, and the nozzles 43 between adjacent groups are staggered, so that the nozzles 43 form multiple annular water curtain areas on the outside of the water retaining drive wheel 42 and the inside of the pipe wall of the outlet pipe 21. This area is the channel for exhaust gas discharge. Due to the strong water pressure, the water retaining drive wheel 42 can be driven to rotate when its water spraying direction is opposite to the inclination direction of the blades of the water retaining drive wheel 42. In order to further increase the rotational torque of the rotating shaft 41 and to further utilize the exhaust gas, an impeller 45 is arranged at the upper end of the rotating shaft 41. The impeller 45 can also provide torque for the rotation of the rotating shaft 41 under the action of the exhaust gas discharge pressure, and at the same time alleviate the exhaust gas outlet pressure to increase the probability of exhaust gas contact with the water curtain.

[0040] The water-blocking driving wheel 42 can also prevent high-pressure water from impacting the inner wall of the air outlet pipe 21 , and can also collect the dust-reduced wastewater into the functional pipe 3 under the guidance of the blades of the water-blocking driving wheel 42 .

[0041] The wastewater after dust reduction enters the filter section 31 with a filtering effect. When the valve 44 closes the lower end of the functional pipe 3, the wastewater remains in the functional pipe 3, and the clean water filtered by the filter section 31 returns to the water tank 1. Before the valve 44 is opened, the dust particles in the sewage are settled to the lower end of the functional pipe 3, that is, the sedimentation section 33, until the valve 44 is opened, part of the wastewater and the dust particles and sludge in the sedimentation section 33 are discharged.

[0042] The scrubbing strip 5 is spiral-shaped, similar to a spring, and can be a spring column made of metal or plastic. The bristles can be attached to the scrubbing strip 5 in one piece, or a rubber sleeve with bristles can be set on the scrubbing strip 5.

[0043] Control of valve 44: Since the rotating shaft 41 is fixedly connected to one end of the scrubbing strip 5, and the valve 44 connected to the lower end of the scrubbing strip 5 is positioned at the lower end of the functional pipe 3, the spiral scrubbing strip 5 gradually decreases in spiral diameter during the rotation of the rotating shaft 41, and the rotational recovery torque after being twisted gradually increases. During the process of reducing the spiral diameter, its longitudinal recovery thrust increases. When the rotating shaft 41 rotates to the point where the rotational torque and thrust of the scrubbing strip 5 can overcome the positioning resistance of the valve 44, the valve 44 is pushed open. During the process of pushing open the valve 44, the valve 44 rotates and moves downward, so that the waste water and waste residue in the functional pipe 3 are discharged due to the opening of the valve 44. When the scrubbing strip 5 recovers to the point where its longitudinal thrust and rotational torque are both small, the valve 44 closes the lower end of the functional pipe 3 again under the action of the longitudinal recovery force of the scrubbing strip 5, and this is repeated.

[0044] During the process of longitudinal movement, twisting and recovery of the scrubbing strip 5, the bristles thereon clean the inner wall of the functional tube 3.

[0045] The iron block 65 and the permanent magnet block can realize the positioning of the valve 44 and the slag removal pipe 61. When positioning, the valve 44 closes the lower end opening of the functional pipe 3; similarly, the permanent magnet block and the electromagnetic block can also realize the same function, and the advantage of the electromagnetic block is that the resistance required for the passive opening of the valve 44 is adjustable, that is, the discharge time interval of the wastewater and the proportion of the wastewater discharge volume are adjustable. The electromagnetic block realizes the electromagnetism structure by winding an energized coil on an iron frame, and can also actively open the valve 44 by changing the magnetic pole, that is, the direction of the energized current. That is, after the electromagnetic block repels the permanent magnet strip 64 or the electromagnetic block is powered off, the valve 44 can be opened by the water pressure in the functional pipe 3.

[0046] The air inlet pipe 22 is partially located below the water surface of the water tank 1 and can cool the exhaust gas.

[0047] Water loss: A portion of the water is discharged with the exhaust gas. The sludge in the function pipe 3 is cleaned and discharged with the function pipe 3, which also causes water loss. The water level in the water tank 1 is maintained through the water supply pipe 7.

[0048] The device can greatly reduce water consumption. At the same time, due to the high water spray intensity of the water curtain, the dust reduction efficiency can be improved and the length of the outlet pipe 21 can be shortened. Compared with the prior art, the water curtain of the device is arranged perpendicular to the axis of the outlet pipe 21, which can improve the collection of wastewater, and due to the high water pressure, it can greatly reduce the sewage directly entering the water tank 1 without treatment. In the attached drawings, in order to better reflect the structure of the functional pipe 3, the ratio of its diameter to the diameter of the water tank 1 is enlarged, and the size of the water tank 1 is reduced.

[0049] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A water-saving water curtain dust removal device, characterized in that: The invention comprises a water tank (1) and an air outlet pipe (21) connected to an opening of the water tank (1), a plurality of air inlet pipes (22) being arranged at the bottom of the water tank (1), an air outlet end of the air inlet pipe (22) being located above the water surface of the water tank (1), a wastewater treatment mechanism being arranged in the middle of the air outlet pipe (21), the wastewater treatment mechanism comprising a functional pipe (3) fixed to the pipe wall of the air outlet pipe (21), a rotating shaft (41) being rotatably connected inside the functional pipe (3), a water-blocking driving wheel (42) being fixedly arranged on the rotating shaft (41), a plurality of nozzles (43) being arranged on the pipe wall of the air outlet pipe (21), each nozzle (43) being connected to a water-blocking driving wheel (42) and a water-blocking driving wheel (42) being fixedly arranged on the rotating shaft (41), The functional pipe (3) is connected to the water outlet end of a water pump, the water inlet end of the water pump is located below the water surface of the water tank (1), the functional pipe (3) is rotatably connected to a rotating shaft (41) below a water retaining driving wheel (42), the lower end portion of the water retaining driving wheel (42) is located in the functional pipe (3), the water outlet direction of each nozzle (43) is toward the direction driving the water retaining driving wheel (42) to rotate, the functional pipe (3) has a water filtering section (31) located above the water surface of the water tank (1), a spiral and elastic scrubbing strip (5) is arranged in the functional pipe (3), the scrubbing strip (5) has bristles, and the upper end of the scrubbing strip (5) is connected to the rotating shaft ( The functional pipe (3) is fixedly connected to the lower end of the water tank (41), the lower end of the functional pipe (3) extends out of the water tank (1), and the lower end of the functional pipe (3) is provided with a valve (44); the functional pipe (3) is provided with a water inlet section (32) located above the water filtering section (31) and a sedimentation section (33) located below the water filtering section (31); the lower end of the functional pipe (3) is provided with a slag removal pipe (61) having a hole diameter larger than the diameter of the sedimentation section (33), the upper end of the valve (44) is abutted against a step surface at the connection between the sedimentation section (33) and the slag removal pipe (61), and the lower end of the washing bar (5) is fixedly connected to the valve (44); the valve (44) ) are uniformly buried in the inner circumference of the valve (44), the slag removal pipe (61) is provided with a plurality of iron blocks (65) corresponding one-to-one to the permanent magnetic strips (64), when the permanent magnetic strips (64) and the iron blocks (65) are adsorbed, the valve (44) blocks the lower end opening of the functional pipe (3); or a plurality of permanent magnetic blocks are uniformly buried in the inner circumference of the valve (44), the slag removal pipe (61) is provided with a plurality of electromagnetic blocks corresponding one-to-one to the permanent magnetic strips (64), when the permanent magnetic strips (64) and the electromagnetic blocks are adsorbed, the valve (44) blocks the lower end opening of the functional pipe (3); the upper end of the functional pipe (3) is provided with a conical water receiving bucket (8).

2. According to claim 1, a water-saving water curtain dust removal device is characterized in that: An impeller (45) located at the outlet of the air outlet pipe (21) is fixedly disposed on the upper end of the rotating shaft (41).

3. According to claim 2, a water-saving water curtain dust removal device is characterized in that: A shielding cover (46) is fixedly provided at the upper end of the air outlet pipe (21), and an air outlet gap is provided between the shielding cover (46) and the air outlet pipe (21).

4. A water-saving water curtain dust removal device according to claim 1, characterized in that: A guide rod (62) is fixedly provided at the bottom of the slag removal pipe (61), a guide hole cooperating with the guide rod (62) is provided at the axis of the valve (44), the valve (44) is slidably connected to the guide rod (62), and a slag outlet (63) is provided on the side of the slag removal pipe (61).

5. A water-saving water curtain dust removal device according to claim 1 or 2, characterized in that: The water tank (1) is connected to a water supply pipe (7) for supplying water to the water tank (1).

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