Circulating water purifying and recycling device for washing tower

Abstract

The invention discloses a washing tower circulating water purifying and recycling device, which belongs to the technical field of waste gas purification treatment and comprises a tower body, a gas inlet pipe is mounted on the lower side of the tower body, and an exhaust pipe is mounted at the top of the tower body; the waste gas treatment unit is arranged in the tower body; the cleaning unit is mounted in the tower body; the pollution discharge unit is connected to the cleaning unit; and the dosing unit is mounted on the side surface of the tower body and is connected with the waste gas treatment unit. The driving part drives the convex extrusion part to rotate, the isolation barrels are extruded one by one to move downwards to be flush with the surface of the mounting frame, washing water directionally flushes the corresponding filler layers to strip dirt, the non-extruded isolation barrels obstruct water flow to ensure pertinence of flushing, waste gas purification and automatic cleaning of the filler layers are conducted at the same time, and the cleaning efficiency is improved. Continuous operation of the system is guaranteed, efficient purification performance of the filler layer is maintained, and equipment maintenance cost and manual intervention requirements are reduced.

Description

Technical Field

[0001] This invention relates to the field of waste gas purification and treatment technology, specifically to a device for purifying and reusing circulating water in a scrubbing tower. Background Technology

[0002] A scrubbing tower, also known as a spray tower or scrubber, is a widely used environmental protection device in industrial waste gas treatment and processes. Its core principle is to atomize a liquid (usually water or a specific chemical agent) into fine droplets, which then come into countercurrent contact with the waste gas flowing upwards within the tower. During this process, pollutants in the waste gas (such as dust, soluble gases, acidic or alkaline substances) are effectively captured, absorbed, or chemically reacted with the droplets, thus being separated and removed from the gas flow. The purified gas is discharged from the top of the tower, while the scrubbing liquid containing pollutants is collected at the bottom for subsequent treatment stages.

[0003] The washing tower circulating water purification and reuse system mainly consists of a treatment unit and a water quality conditioning unit. The treatment unit includes an interception filter and an oil separator. Through filter screen interception and inclined plate sedimentation, it can efficiently remove large particulate suspended solids and floating oil from the circulating water, preventing clogging of subsequent treatment equipment. The water quality conditioning unit is equipped with a pH adjustment tank and a corrosion and scale inhibitor dosing device, achieving stable control of water quality parameters through the addition of chemicals. The entire system adopts a modular design, forming a closed-loop treatment process for circulating water: "interception-purification-conditioning-reuse".

[0004] In the actual operation of existing washing tower circulating water purification and reuse devices, the filter screens of the pretreatment unit need to be cleaned regularly to ensure the interception effect. However, current cleaning operations usually require disassembling the filter screens, which is not only cumbersome and time-consuming, but also causes the device to stop operating, affecting the efficiency of circulating water purification and reuse. Therefore, there is an urgent need to develop a washing tower circulating water purification and reuse device that can clean the filter screens without disassembly, in order to solve the shortcomings of the existing technology. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a washing tower circulating water purification and reuse device to solve the problems in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A device for purifying and reusing circulating water from a scrubbing tower includes: The tower body has an air intake pipe installed on its lower side and an exhaust pipe installed on its top. An exhaust gas treatment unit is installed inside the tower body and is used to purify the gas entering the tower body through the inlet pipe. The exhaust gas treatment unit includes a water tank located at the bottom of the tower body. The cleaning unit, installed inside the tower, works in conjunction with the exhaust gas treatment unit to purify the circulating water in the pool. The sewage discharge unit, connected to the cleaning unit, is used to discharge the impurities adsorbed by the exhaust gas treatment unit. The dosing unit is installed on the side of the tower and connected to the exhaust gas treatment unit. It works in conjunction with the exhaust gas treatment unit to automatically add chemicals to the tower.

[0007] As a preferred embodiment of the present invention, the waste gas treatment unit further includes: a booster pump located at the bottom of the water tank, the surface of which is provided with a dirt-proof cover; a pipe, one end of which is connected to the output end of the booster pump, and the other end of which passes through the water tank and extends to the top of the tower; an atomizing nozzle connected to the end of the pipe away from the booster pump; and a mounting frame fixed to the inner wall of the tower, wherein at least two sets of packing layers are installed in the mounting frame.

[0008] As a preferred embodiment of the present invention, an observation window is installed on the side of the tower body, and a demisting layer is installed at the end of the tower body located at the exhaust pipe.

[0009] As a preferred embodiment of the present invention, the cleaning unit includes: an embedded groove, formed on the upper side of the mounting frame, with an isolation cylinder slidably connected inside, and the end of the isolation cylinder and the inner wall of the embedded groove connected by an elastic element; a drive rod, rotatably connected to the mounting frame, with a rotating frame mounted on the upper end of the drive rod; a convex extrusion member, fixed on the lower side of the rotating frame, with its surface slidably connected to the upper end of the isolation cylinder; an embedded hole, formed on the lower side of the mounting frame, with a drive element installed inside; a drive gear, rotatably connected inside the embedded hole, and the drive gear connected to the output end of the drive element; and a driven gear, fixed on the surface of the drive rod, and meshing with the drive gear.

[0010] As a preferred embodiment of the present invention, the number of the isolation cylinder and the packing layer are the same, the upper end of the packing layer is slidably connected inside the isolation cylinder, and the lower end is fixed inside the mounting frame.

[0011] As a preferred embodiment of the present invention, the sewage discharge unit includes: a sewage discharge frame, fixed to the lower end of the drive rod, and a filter screen installed inside the sewage discharge frame; a sewage discharge port, installed on the lower side of the sewage discharge frame and connected to the filter screen; and a sewage discharge pipe, one end of which is vertically upward and rotatably connected to the inside of the sewage discharge port, and the other end of which is horizontally positioned and penetrates the tower body and extends to the outside of the tower body.

[0012] As a preferred embodiment of the present invention, the dosing unit includes: a dosing cylinder, fixed to the side of the tower body by a device frame; a dosing pipe, vertically fixed to the dosing cylinder and extending to the interior of the dosing cylinder at one end; a lifting cylinder, slidably connected to the surface of the dosing pipe, and the end of the lifting cylinder is connected to the upper side of the dosing cylinder by an elastic element; a first sealing ball, slidably connected to the interior of the lifting cylinder and engaged with the upper end of the dosing pipe; an inner tube, fixed to the inner wall of the lifting cylinder; a second sealing ball, slidably connected to the interior of the lifting cylinder and engaged with the upper end of the inner tube; a dispensing pipe, fixed to the lifting cylinder, and the connection between the dispensing pipe and the lifting cylinder is located above the end of the inner tube; and a flexible hose, one end of which is connected to the end of the dispensing pipe and the other end of which is connected to the water tank.

[0013] As a preferred embodiment of the present invention, the dosing unit further includes: a water turbine cylinder connected to a pipeline, with a rotating rod rotatably connected inside, the end of the rotating rod passing through the water turbine cylinder and rotatably connected to the device frame; a water wheel installed on the surface of the rotating rod located inside the water turbine cylinder; and a convex wheel fixed on the surface of the rotating rod located outside the water turbine cylinder, the surface of the convex wheel being rotatably connected to the upper end of the lifting cylinder.

[0014] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: The present invention drives the convex extruder to rotate through the driving component, and extrudes each group of isolation cylinders one by one to move them down to be flush with the surface of the mounting frame. This allows the washing water to directionally rinse the corresponding packing layer to remove dirt. The isolation cylinders that are not extruded block the water flow to ensure targeted rinsing. This enables the simultaneous purification of exhaust gas and automated cleaning of the packing layer, ensuring continuous operation of the system, maintaining the high-efficiency purification performance of the packing layer, and reducing equipment maintenance costs and the need for manual intervention.

[0015] In this invention, the dosing unit replenishes the washing liquid in the water tank with an alkaline regulator to maintain its ability to neutralize acidic waste gas. The flow of the washing liquid in the pipeline drives the water wheel to rotate, causing the convex wheel of the rotating rod to periodically squeeze the lifting cylinder, which works in conjunction with the dosing cylinder to complete automatic dosing. The dosing dosage is dynamically matched with the waste gas treatment volume, and the hose is adaptable to movement and easy to maintain. This unit does not require an additional drive device and realizes automated and precise dosing.

[0016] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a washing tower circulating water purification and reuse device provided as an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the overall structure of a washing tower circulating water purification and reuse device from another perspective, provided as an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the waste gas treatment unit of a washing tower circulating water purification and reuse device provided by the present invention.

[0020] Figure 4 This is a schematic diagram of the internal structure of a washing tower circulating water purification and reuse device provided by the present invention.

[0021] Figure 5 for Figure 4 A magnified view of part A in the middle.

[0022] Figure 6 This is a top view of the mounting frame of a washing tower circulating water purification and reuse device provided by the present invention.

[0023] Figure 7 This is a schematic diagram of the convex extrusion component of a washing tower circulating water purification and reuse device provided by the present invention.

[0024] Figure 8 for Figure 4 A magnified view of part B in the middle section.

[0025] Reference numerals: 1. Tower body; 11. Inlet pipe; 12. Exhaust pipe; 13. Observation window; 2. Waste gas treatment unit; 21. Water tank; 22. Booster pump; 23. Pipeline; 231. Atomizing nozzle; 24. Anti-fouling cover; 25. Mounting bracket; 26. Packing layer; 3. Cleaning unit; 31. Embedded groove; 32. Isolation cylinder; 33. Elastic element; 34. Drive rod; 35. Rotating frame; 36. Convex extrusion part; 37. Embedded hole; 38. Drive element; 391. Drive gear; 392. Driven gear; 4. Sewage discharge unit; 41. Sewage discharge frame; 411. Filter screen; 42. Sewage discharge port; 43. Sewage discharge pipe; 5. Dosing unit; 51. Dosing cylinder; 52. Device frame; 53. Rotating rod; 531. Convex wheel; 54. Water turbine cylinder; 541. Water turbine; 55. Dosing pipe; 551. First sealing ball; 56. Lifting cylinder; 57. Elastic material; 58. Embedded tube; 581. Second sealing ball; 59. Dosing pipe; 591. Flexible hose; 61. Demisting layer. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] See Figures 1-8 A device for purifying and reusing circulating water in a scrubbing tower, comprising: Tower body 1, with an air inlet pipe 11 installed on the lower side and an exhaust pipe 12 installed on the top; The exhaust gas treatment unit 2 is located inside the tower body 1 and is used to purify the gas entering the tower body 1 through the air inlet pipe 11. The exhaust gas treatment unit 2 includes a water tank 21 located at the bottom of the tower body 1. The cleaning unit 3 is installed inside the tower body 1 and is used in conjunction with the exhaust gas treatment unit 2 to purify the circulating water in the water tank 21. The sewage discharge unit 4 is connected to the cleaning unit 3 and is used to discharge the impurities adsorbed by the exhaust gas treatment unit 2. The dosing unit 5 is installed on the side of the tower body 1 and connected to the exhaust gas treatment unit 2. It is used to cooperate with the exhaust gas treatment unit 2 to realize the automatic dosing of chemicals into the tower body 1.

[0029] In one embodiment of the present invention, such as Figure 3 As shown, the waste gas treatment unit 2 further includes: A booster pump 22 is located at the bottom of the water tank 21, and a dirt-proof cover 24 is provided on the surface of the booster pump 22; Pipeline 23 is connected at one end to the output end of booster pump 22, and at the other end it passes through water tank 21 and extends to the top of tower body 1; Atomizing nozzle 231 is connected to the end of pipe 23 away from lift pump 22; Mounting bracket 25 is fixed to the inner wall of tower body 1, and at least two sets of packing layers 26 are installed inside mounting bracket 25.

[0030] In one embodiment of the present invention, such as Figure 1 and Figure 2 As shown, an observation window 13 is installed on the side of the tower body 1, and a demisting layer 61 is installed at the end of the tower body 1 located at the exhaust pipe 12.

[0031] In this embodiment, during use, the waste gas to be treated is continuously introduced into the tower body 1 through the inlet pipe 11, and the gas gradually rises from bottom to top. After passing through multiple packing layers 26 on the mounting frame 25, the packing layers 26, made of materials such as honeycomb ceramic and polypropylene multifaceted hollow spheres, possess a large specific surface area and abundant porous structure. This allows them to intercept fine particulate matter, dust, and other impurities in the waste gas, achieving preliminary filtration. Furthermore, the liquid film adhesion effect on the surface extends the contact time and contact area between the gas and liquid phases, laying the foundation for subsequent purification reactions. Meanwhile, the alkaline washing liquid stored in the water tank 21 is stably drawn out by the booster pump 22. The anti-fouling cover 24 on the surface of the booster pump 22 is made of stainless steel filter mesh, which can prevent impurities deposited at the bottom of the water tank 21 from entering the pump body, avoiding impurity blockage and wear, and ensuring the long-term stable operation of the booster pump 22. The washing liquid is transported to the top of the tower body 1 through the pipe 23, and is converted into water mist by the evenly distributed atomizing nozzles 231 at the end of the pipe, which are evenly sprayed into the internal space of the tower body 1. The descending water mist and rising exhaust gas form a strong countercurrent contact in the packing layer 26 region. Acidic gases in the exhaust gas (such as sulfur dioxide, hydrogen chloride, and nitrogen oxides) neutralize with the alkaline components in the washing liquid, while soluble pollutants are fully absorbed and dissolved by the water mist. After deep purification by the packing layer 26, the gas continues to flow upwards into the demister layer 61 at the top of the tower 1. The demister layer 61 specifically employs a baffle plate demister structure to separate and trap liquid droplets entrained in the gas, preventing secondary pollution caused by moisture in the exhaust gas. Finally, the purified gas is discharged through the exhaust pipe 12 at the top of the tower, while the washing liquid that has absorbed pollutants flows back to the water tank 21 along the inner wall of the tower 1, achieving recycling.

[0032] The bottom of the pool 21 is also equipped with a drain outlet, which can periodically discharge the deposited sludge and saturated waste liquid to ensure the stable purification efficiency of the washing liquid. An observation window 13 is installed on the side of the tower body 1, through which the internal conditions of the tower body 1 can be observed.

[0033] In one embodiment of the present invention, such as Figure 5 and Figure 7 As shown, the cleaning unit 3 includes: An embedded groove 31 is formed on the upper side of the mounting frame 25, and an isolation cylinder 32 is slidably connected inside it. The end of the isolation cylinder 32 and the inner wall of the embedded groove 31 are connected by an elastic element 33. The number of isolation cylinders 32 and the number of filler layers 26 are the same. The upper end of the filler layer 26 is slidably connected inside the isolation cylinder 32, and the lower end is fixed inside the mounting frame 25. The drive rod 34 is rotatably connected to the mounting bracket 25, and the upper end of the drive rod 34 is equipped with a rotating bracket 35; The convex extrusion part 36 is fixed to the lower side of the rotating frame 35, and its surface is slidably connected to the upper end of the isolation cylinder 32; An embedded hole 37 is provided on the lower side of the mounting bracket 25, and a drive component 38 is installed inside. The drive component 38 is a servo motor. The drive gear 391 is rotatably connected inside the embedded hole 37, and the drive gear 391 is connected to the output end of the drive component 38; Driven gear 392 is fixed to the surface of drive rod 34 and meshes with drive gear 391.

[0034] In this embodiment, when the drive unit 38 is turned on, the output end of the drive unit 38 will drive the drive gear 391 to rotate in the inner hole 37. The drive gear 391, through its connection with the driven gear 392, will drive the drive rod 34 to rotate on the mounting frame 25. The drive rod 34 will drive the rotating frame 35 and the sewage rack 41 at its upper and lower ends to rotate synchronously. The rotating frame 35 will drive the convex extrusion member 36 to rotate on the upper side of the mounting frame 25. When the convex extrusion member 36 rotates to contact one of the isolation cylinders 32, the isolation cylinder 32 will slide downward in the inner groove 31 under the extrusion of the convex extrusion member 36, and compress the elastic member 33 in the inner groove 31. The elastic member 33 can be a compression spring, until the upper end of the isolation cylinder 32 is flush with the surface of the mounting frame 25.

[0035] When the surfaces of the isolation cylinders 32 and the mounting frame 25 are flush, the washing water accumulated on the surface of the mounting frame 25 will quickly flow to the isolation cylinders 32, and then through the packing layer 26 inside the isolation cylinders 32 to the water pool 21 at the bottom of the tower body 1. When the water flows through the packing layer 26, it can wash away the impurities adsorbed by the packing layer 26. At the same time, with the impact force of the water flow and the vibration of the packing layer 26 itself, stubborn dirt and suspended particles attached to the pores of the packing layer 26 are peeled off and flowed into the water pool 21 with the water flow. The other isolation cylinders 32 that are not squeezed by the convex extruder 36 are kept in a state where the upper end is higher than the surface of the mounting frame 25 under the support of the elastic member 33, and continue to block the water flow on the mounting frame 25, preventing the washing water from seeping down directly without targeted rinsing, and ensuring that the packing layer 26 corresponding to each isolation cylinder 32 can be fully cleaned with the cooperation of the convex extruder 36.

[0036] During the flushing of one set of packing layers 26, the purification of exhaust gas by other sets of packing layers 26 is not affected. Other sets of packing layers 26 can continuously purify the exhaust gas inside the tower body 1. Throughout the operation, exhaust gas purification and cleaning of packing layers 26 proceed in parallel, ensuring the continuous operation of the treatment system and maintaining the high-efficiency purification performance of packing layers 26 through automated cleaning, thereby reducing equipment maintenance costs and the need for manual intervention.

[0037] In one embodiment of the present invention, such as Figure 7 As shown, the sewage discharge unit 4 includes: The sewage rack 41 is fixed to the lower end of the drive rod 34, and a filter screen 411 is installed inside the sewage rack 41; The drain outlet 42 is installed on the lower side of the drain rack 41 and is connected to the filter screen 411; The drain pipe 43 has one vertically upward end that is rotatably connected to the inside of the drain outlet 42, and the other horizontal end that passes through the tower body 1 and extends to the outside of the tower body 1.

[0038] In this embodiment, the drive rod 34 rotates simultaneously, causing the drain rack 41 to rotate synchronously. The filter screen 411 on the drain rack 41 can perform secondary filtration on the rinsing wastewater flowing into the water tank 21, intercepting impurities that fall off from the packing layer 26. The filter screen 411 is installed at an angle towards the drain outlet 42, ensuring that the impurities intercepted on the surface of the filter screen 411 can be discharged from the drain pipe 43 through the drain outlet 42 in a timely manner, preventing impurities from accumulating in the water tank 21, ensuring the cleanliness of the water in the water tank 21, and also preventing impurities from clogging the circulating washing water and affecting the operation of other components. The entire rinsing process requires no manual intervention and achieves automated alternating cleaning through mechanical transmission, which not only ensures the purification efficiency of the packing layer 26, but also extends the service life of the equipment and improves the overall stability and economy of operation.

[0039] In one embodiment of the present invention, such as Figure 8 As shown, the dosing unit 5 includes: The dosing cylinder 51 is fixed to the side of the tower body 1 by the device frame 52; The dosing tube 55 is vertically fixed to the dosing cylinder 51, and its end extends into the interior of the dosing cylinder 51; The lifting cylinder 56 is slidably connected to the surface of the dosing pipe 55, and the end of the lifting cylinder 56 is connected to the upper side of the dosing cylinder 51 through an elastic element 57. The first sealing ball 551 is slidably connected inside the lifting cylinder 56 and engaged at the upper end of the dosing pipe 55; The inner tube 58 is fixed to the inner wall of the lifting cylinder 56; The second sealing ball 581 is slidably connected inside the lifting cylinder 56 and engaged at the upper end of the inner tube 58; The medicine outlet tube 59 is fixed on the lifting cylinder 56, and the connection between the medicine outlet tube 59 and the lifting cylinder 56 is located above the end of the inner tube 58. The flexible hose 591 has one end connected to the end of the medicine outlet tube 59 and the other end connected to the water tank 21.

[0040] The water turbine 54 is connected to the pipe 23, and a rotating rod 53 is rotatably connected inside it. The end of the rotating rod 53 passes through the water turbine 54 and is rotatably connected to the device frame 52. The water turbine 541 is installed on the surface of the rotating rod 53 located inside the water turbine cylinder 54; A convex wheel 531 is fixed on the surface of the rotating rod 53 located outside the water turbine 54, and the surface of the convex wheel 531 is rotatably connected to the upper end of the lifting cylinder 56.

[0041] In this embodiment, an alkaline regulator (such as sodium hydroxide solution, sodium bicarbonate powder, etc.) is added to the dosing cylinder 51 to replenish the alkaline components of the washing liquid in the water tank 21, maintaining its ability to neutralize acidic waste gas. When the booster pump 22 drives the washing liquid to be transported along the pipeline 23, the high-speed flowing liquid will impact the water wheel 541 inside the water wheel cylinder 54, causing the water wheel 541 to rotate synchronously with the rotating rod 53. A convex wheel 531 is fixed to the end of the rotating rod 53 that passes through the water wheel cylinder 54. As the rotating rod 53 rotates, the convex wheel 531 will periodically squeeze the upper end of the lifting cylinder 56.

[0042] When the protruding part of the convex wheel 531 contacts the lifting cylinder 56, the lifting cylinder 56 slides downward along the surface of the dosing tube 55 under the push of the convex wheel 531, and compresses the elastic element 57 (a compression spring or rubber elastic pad can be selected) connected to its bottom. At this time, the space inside the lifting cylinder 56 is compressed, the air pressure rises and pushes the second sealing ball 581 upward, disengaging it from the upper end of the inner tube 58 from its engaged position.

[0043] When the protruding part of the convex wheel 531 disengages from the lifting cylinder 56, the lifting cylinder 56 slides upward along the surface of the dosing tube 55 under the elastic force of the elastic material 57. As a result, the space formed inside the lifting cylinder 56 and between the first sealing ball 551 and the second sealing ball 581 increases. As a result, the first sealing ball 551 moves upward under the pressure of air and disengages from the upper end of the dosing tube 55. The medicine in the dosing cylinder 51 will enter the interior of the lifting cylinder 56 through the dosing tube 55.

[0044] When the protruding part of the convex wheel 531 contacts the lifting cylinder 56 again, the space inside the lifting cylinder 56 will be compressed again, the air pressure will increase and push the second sealing ball 581 to move upward, so that the medicine inside the lifting cylinder 56 will enter the upper end of the lifting cylinder 56 through the embedded tube 58 and be discharged through the medicine outlet pipe 59 on the side of the lifting cylinder 56. Finally, the medicine will flow into the interior of the water tank 21 through the hose 591, completing one automatic dosing process.

[0045] This design allows for automatic regulation of the dosage and frequency of chemical dosing based on the flow rate of the washing liquid within pipe 23. When the waste gas volume increases, the output power of the booster pump 22 increases, the liquid flow rate within pipe 23 accelerates, the rotation speed of the water wheel 541 increases, and the frequency at which the convex wheel 531 squeezes the lifting cylinder 56 increases, resulting in a synchronous increase in the number of chemical dosing operations per unit time. Conversely, when the waste gas volume decreases, the dosing frequency automatically decreases. This achieves a dynamic match between the amount of chemical added and the consumption of washing liquid, avoiding both waste and secondary pollution caused by excessive chemical dosage, and preventing a decrease in purification efficiency due to insufficient chemical dosage.

[0046] The flexible connection design of hose 591 adapts to the up-and-down reciprocating motion of lifting cylinder 56, while also facilitating equipment installation and maintenance. The dosing unit 5, through power linkage with pipeline 23, eliminates the need for an additional drive device, achieving automated and precise dosing.

[0047] The working principle of this invention is as follows: When the scrubbing tower is in use, the waste gas to be treated is introduced into the tower body 1 and discharged after deep purification by the packing layer 26. The drive component 38 is turned on to drive the convex extruder 36 to rotate, extruding each set of isolation cylinders 32 one by one until they are flush with the surface of the mounting frame 25. This allows the washing water to directionally rinse the corresponding packing layer 26 to remove dirt. The isolation cylinders 32 that are not extruded block water, preventing the washing water from seeping directly without targeted rinsing. This ensures that the packing layer 26 corresponding to each set of isolation cylinders 32 can be fully cleaned with the cooperation of the convex extruder 36, realizing simultaneous automatic cleaning of waste gas purification and packing layer 26.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for purifying and reusing circulating water in a scrubbing tower, characterized in that, include: The tower body (1) has an air inlet pipe (11) installed on its lower side and an exhaust pipe (12) installed on its top. The exhaust gas treatment unit (2) is located inside the tower body (1) and is used to purify the gas entering the tower body (1) through the air inlet pipe (11). The exhaust gas treatment unit (2) includes a water tank (21) located at the bottom of the tower body (1). The cleaning unit (3) is installed inside the tower body (1) and is used in conjunction with the exhaust gas treatment unit (2) to purify the circulating water in the water tank (21); The sewage discharge unit (4) is connected to the cleaning unit (3) and is used to discharge the impurities adsorbed by the exhaust gas treatment unit (2); The dosing unit (5) is installed on the side of the tower body (1) and connected to the exhaust gas treatment unit (2) to cooperate with the exhaust gas treatment unit (2) to automatically add chemicals to the tower body (1).

2. The washing tower circulating water purification and reuse device according to claim 1, characterized in that, The waste gas treatment unit (2) further includes: A lift pump (22) is located at the bottom of the pool (21), and a dirt cover (24) is provided on the surface of the lift pump (22); The pipe (23) is connected at one end to the output end of the booster pump (22) and at the other end passes through the water tank (21) and extends to the top of the tower (1); Atomizing nozzle (231) is connected to the end of pipe (23) away from the booster pump (22); The mounting bracket (25) is fixed to the inner wall of the tower body (1), and at least two sets of packing layers (26) are installed inside the mounting bracket (25).

3. The washing tower circulating water purification and reuse device according to claim 2, characterized in that, An observation window (13) is installed on the side of the tower body (1), and a demisting layer (61) is installed at the end of the tower body (1) located on the exhaust pipe (12).

4. The washing tower circulating water purification and reuse device according to claim 2, characterized in that, The cleaning unit (3) includes: An embedded groove (31) is provided on the upper side of the mounting bracket (25), and an isolation cylinder (32) is slidably connected inside it. The end of the isolation cylinder (32) and the inner wall of the embedded groove (31) are connected by an elastic element (33). The isolation cylinder (32) protrudes from the surface of the mounting bracket (25) under the action of the elastic element (33). A drive rod (34) is rotatably connected to a mounting bracket (25), and a rotating bracket (35) is mounted on the upper end of the drive rod (34); A convex extrusion piece (36) is fixed to the lower side of the rotating frame (35), and its surface is slidably connected to the upper end of the isolation cylinder (32); An embedded hole (37) is provided on the lower side of the mounting bracket (25), and a drive component (38) is installed inside it; The drive gear (391) is rotatably connected inside the inner hole (37), and the drive gear (391) is connected to the output end of the drive unit (38); The driven gear (392) is fixed on the surface of the drive rod (34) and meshes with the drive gear (391).

5. The washing tower circulating water purification and reuse device according to claim 4, characterized in that, The isolation cylinder (32) is a cylindrical structure with an open top and closed side walls. The number of isolation cylinders (32) and packing layers (26) is the same. The upper end of the packing layer (26) is slidably connected inside the isolation cylinder (32), and the lower end is fixed inside the mounting frame (25).

6. The washing tower circulating water purification and reuse device according to claim 4, characterized in that, The sewage discharge unit (4) includes: A drain rack (41) is fixed to the lower end of the drive rod (34), and a filter screen (411) is installed inside the drain rack (41); The drain outlet (42) is installed on the lower side of the drain rack (41) and is connected to the filter screen (411); The drain pipe (43) has one vertically upward end sealed and rotatably connected inside the drain outlet (42), and the other horizontal end penetrates the tower body (1) and extends to the outside of the tower body (1).

7. The washing tower circulating water purification and reuse device according to claim 6, characterized in that, The dosing unit (5) includes: The dosing cartridge (51) is fixed to the side of the tower body (1) by the device frame (52); The dosing tube (55) is vertically fixed on the dosing cylinder (51) and its end extends into the interior of the dosing cylinder (51); The lifting cylinder (56) is slidably connected to the surface of the dosing tube (55), and the end of the lifting cylinder (56) is connected to the upper side of the dosing tube (51) through an elastic element (57); The first sealing ball (551) is slidably connected inside the lifting cylinder (56) and engaged at the upper end of the dosing tube (55); An embedded tube (58) is fixed to the inner wall of the lifting cylinder (56); The second sealing ball (581) is slidably connected inside the lifting cylinder (56) and engaged at the upper end of the inner tube (58); The medicine outlet tube (59) is fixed on the lifting cylinder (56), and the connection between the medicine outlet tube (59) and the lifting cylinder (56) is located above the end of the inner tube (58); The hose (591) has one end connected to the end of the medicine outlet tube (59) and the other end connected to the water tank (21).

8. The washing tower circulating water purification and reuse device according to claim 7, characterized in that, The dosing unit (5) also includes: A water turbine (54) is connected to a pipe (23), and a rotating rod (53) is rotatably connected inside. The end of the rotating rod (53) passes through the water turbine (54) and is rotatably connected to the device frame (52). The water turbine (541) is mounted on the surface of the rotating rod (53) located inside the water turbine cylinder (54); A convex wheel (531) is fixed on the surface of the rotating rod (53) located outside the water turbine (54), and the surface of the convex wheel (531) is rotatably connected to the upper end of the lifting cylinder (56).

Images