A circulating spray type exhaust gas purification treatment device

Abstract

The utility model discloses a kind of circulating spray type waste gas purification treatment devices, belong to waste gas treatment technical field. Including spray tower, support and spray liquid circulating mechanism, spray tower is fixedly installed on support, spray liquid circulation system is communicated with spray tower, spray liquid circulating mechanism includes water storage tank, filter plate, slagging mechanism, first water pump, filter tank, second water pump and delivery pipe, water storage tank inside includes clean water cavity and filter water cavity, filter plate is installed in filter water cavity, slagging mechanism is installed above filter plate, first water pump water inlet end and water outlet end are communicated with filter water cavity and filter tank respectively, filter tank water outlet end is communicated with clean water cavity, second water pump water inlet end and water outlet end are communicated with clean water cavity and delivery pipe respectively, the delivery pipe is communicated with spray tower. The utility model's spray liquid circulating mechanism can carry out two filtering processes of coarse filtration and fine filtration to circulating liquid, effectively reduce the probability that filter tank filter element is blocked, improve circulating liquid processing efficiency, save use cost.

Description

Technical Field

[0001] This utility model relates to a waste gas treatment device, and more specifically, to a circulating spray type waste gas purification treatment device. Background Technology

[0002] Industrial waste gases emitted by various production enterprises, such as particulate matter, flue gas, odorous gases, and toxic and harmful gases, are important sources of air pollution. If large amounts of industrial waste gases are discharged into the atmosphere without being treated to meet standards, it will inevitably lead to a decline in air quality, seriously harm human health, and cause huge losses to the national economy. Therefore, nowadays, production enterprises will carry out unified purification treatment of the waste gases emitted.

[0003] Spray towers are an essential process unit widely used in environmental protection for waste gas purification. Their principle is to utilize the counter-current contact between waste gas and circulating spray water within the tower to achieve waste gas adsorption and purification. Depending on the source of the waste, spray towers generate a large amount of waste liquid after treatment, much of which is oily and dusty (precipitated) waste liquid. Directly disposing of this waste liquid as hazardous waste would incur significant costs. If left untreated and directly recycled, the efficiency of the spray tower treatment facility would decrease, and large amounts of sediment would accumulate at the bottom of the tower. If these sediments are not cleaned in time, it may cause nozzle blockage, or even backflow of liquid into the ductwork, ultimately leading to the paralysis of the treatment system.

[0004] Utility model patent CN 222400882 U discloses a filter for a spray tower circulating water pipeline, including a spray tower and a filter, a vertical centrifugal water pump, and multiple valves connected in series via an inlet pipe. A pressure gauge is installed on the inlet pipe near the vertical centrifugal water pump. The filter includes a housing and a drain pipe connected to the bottom of the housing, with a cover plate on the top of the housing. The technical solution involves directly filtering the waste liquid treated by the spray tower through the filter to purify the circulating liquid. However, the waste liquid contains various large particles and oily substances, which easily cause filter clogging if directly processed, requiring frequent filter element replacement. Therefore, it suffers from poor circulating liquid treatment effect, low efficiency, and high operating costs. Utility Model Content

[0005] The purpose of this invention is to provide a circulating spray type waste gas purification and treatment device to overcome the shortcomings of the existing spray tower circulating liquid treatment effect, low efficiency and high cost.

[0006] This utility model is achieved using the following technical solution: A circulating spray-type waste gas purification and treatment device, comprising a spray tower, a support frame, and a spray liquid circulation mechanism. The spray tower is fixedly installed on the support frame, and the spray liquid circulation system is connected to the spray tower. The spray liquid circulation mechanism includes a water storage tank, a filter plate, a sludge scraping mechanism, a first water pump, a filter tank, a second water pump, and a conveying pipe. The water storage tank includes a clean water chamber and a filter water chamber. The filter plate is installed in the filter water chamber, and the sludge scraping mechanism is installed above the filter plate. The inlet and outlet of the first water pump are respectively connected to the filter water chamber and the filter tank. The outlet of the filter tank is connected to the clean water chamber. The inlet and outlet of the second water pump are respectively connected to the clean water chamber and the conveying pipe. The conveying pipe is connected to the spray tower.

[0007] Furthermore, the slag scraping mechanism includes a driven shaft, a drive shaft, a sprocket and chain assembly, a moving frame, a motor, and a scraper. The driven shaft and the drive shaft are rotatably connected in parallel to each other on the side wall of the filtration chamber. The driven shaft and the drive shaft are connected by transmission through two sets of sprocket and chain assemblies. The moving frame is fixed between the chains of the two sets of sprocket and chain assemblies. The scraper is fixed on the moving frame. The motor is connected to the drive shaft by transmission through the sprocket and chain assembly.

[0008] Furthermore, slides are provided on the side walls of the water filtration chamber, and the two sides of the filter plate are movably connected to the two sets of slides.

[0009] Furthermore, the front end of the filter plate is provided with an upwardly curved arc plate.

[0010] Furthermore, the water storage tank is equipped with a slag collection port at its front end.

[0011] Furthermore, the water storage tank is equipped with a level gauge that is inserted into the water purification chamber.

[0012] Furthermore, the spray tower includes a tower body, an air outlet at the top of the tower body, an air inlet on the bottom side of the tower body, and a water outlet at the bottom of the tower body. Inside the tower body, from top to bottom, there are sequentially arranged a demisting layer, a first spraying component, a first packing layer, a second spraying component, and a second packing layer. Both the first spraying component and the second spraying component are connected to a conveying pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The spray liquid circulation mechanism of this utility model can perform two filtration processes for circulating liquid: coarse filtration and fine filtration. The coarse filtration process filters large particle agglomerates and oily foam in the circulating liquid through a filter plate. The fine filtration process filters small dust particles through a filter tank. This effectively reduces the chance of filter tank element clogging, improves the circulating liquid treatment efficiency, and saves usage costs.

[0015] (2) This utility model achieves automatic scraping of oily foam and large particle clumps accumulated on the filter plate by setting a scraper device, which avoids the clogging of the filter plate, effectively reduces the frequency of manual cleaning of the filter plate, and reduces the workload of manual labor.

[0016] (3) The filter plate of this utility model is detachably connected by a slide rail. The filter plate can be deeply cleaned by disassembling it, making the filter plate cleaning more convenient and improving the filter plate cleaning efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a cross-sectional view of the spray tower of this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the spray liquid circulation mechanism of this utility model.

[0020] Figure 4 This is a cross-sectional view of the spray liquid circulation mechanism of this utility model.

[0021] Figure 5 yes Figure 4 Enlarged view of part A.

[0022] In the diagram: 1. Spray tower; 11. Tower body; 12. Demisting layer; 13. Air outlet; 14. First spray assembly; 15. First packing layer; 16. Second spray assembly; 17. Second packing layer; 18. Water outlet; 19. Air inlet; 2. Support frame; 3. Spray liquid circulation mechanism; 31. Water storage tank; 311. Clean water chamber; 312. Filter chamber; 313. Slag collection port; 314. Slide rail; 32. Filter plate; 321. Arc plate; 33. Scraper mechanism; 331. Driven shaft; 332. Drive shaft; 333. Sprocket and chain assembly; 334. Moving frame; 335. Motor; 336. Scraper; 34. First water pump; 35. Filter tank; 36. Second water pump; 37. Delivery pipe; 38. Level gauge. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, a circulating spray-type waste gas purification device includes a spray tower 1, a support 2, and a spray liquid circulation mechanism 3. The spray tower 1 is fixedly installed on the support 2, and the spray liquid circulation system is connected to the spray tower 1. The spray tower 1 is used to achieve waste gas adsorption and purification by utilizing the countercurrent contact between waste gas and circulating spray water inside the tower. The support 2 is used to support and fix the spray tower 1, and the spray liquid circulation mechanism 3 is used to deliver circulating liquid to the spray tower 1 and purify and filter the circulating liquid.

[0025] Specifically, such as Figure 2 As shown, the spray tower 1 includes a tower body 11, an air outlet 13 at the top of the tower body 11, an air inlet 19 on the bottom side of the tower body 11, and a water outlet 18 at the bottom of the tower body 11. Inside the tower body 11, from top to bottom, there are a demisting layer 12, a first spray assembly 14, a first packing layer 15, a second spray assembly 16, and a second packing layer 17. The first spray assembly 14 and the second spray assembly 16 are both connected to the conveying pipe 37.

[0026] During operation, the exhaust gas enters the bottom of the tower body 11 through the air inlet 19. As the exhaust gas rises, it passes through the second packing layer 17 and the first packing layer 15 in sequence. At the same time, the first spray assembly 14 and the second spray assembly 16 spray atomized circulating liquid. The exhaust gas comes into full contact with the circulating liquid in the second packing layer 17 and the first packing layer 15, so that the circulating liquid can fully absorb the smoke, dust and harmful gases in the exhaust gas. After contacting the exhaust gas, the circulating liquid falls into the spray liquid circulation mechanism 3 through the water outlet 18. The purified gas passes through the demister layer 12 to remove water mist, and finally is discharged through the air outlet 13.

[0027] Specifically, such as Figure 3 , Figure 4 As shown, the spray liquid circulation mechanism 3 includes a water storage tank 31, a filter plate 32, a sludge scraping mechanism 33, a first water pump 34, a filter tank 35, a second water pump 36, and a delivery pipe 37. The water storage tank 31 includes a clean water chamber 311 and a filter water chamber 312. The filter plate 32 is installed inside the filter water chamber 312, and the sludge scraping mechanism 33 is installed above the filter plate 32. The inlet and outlet of the first water pump 34 are connected to the filter water chamber 312 and the filter tank 35, respectively. The outlet of the filter tank 35 is connected to the clean water chamber 311. The inlet and outlet of the second water pump 36 are connected to the clean water chamber 311 and the delivery pipe 37, respectively. The delivery pipe 37 is connected to the spray tower 1.

[0028] During operation, the circulating liquid from the spray tower 1 after treating the waste gas falls onto the filter plate 32 through the outlet 18. First, the filter plate 32 filters out large particles and foam in the circulating liquid. The scraping mechanism 33 automatically scrapes off the large particles and foam remaining on the filter plate 32 to prevent the filter plate 32 from clogging. Then, the circulating liquid after preliminary filtration enters the water filtration chamber 312 for sedimentation. Then, the first water pump 34 draws the circulating liquid from the water filtration chamber 312 into the filter tank 35 for further fine filtration to remove finer impurities. Then, the circulating water filtered by the filter tank 35 enters the clean water chamber 311. After adding chemicals in the clean water chamber 311, the purified circulating liquid is finally sent back into the spray tower 1 for recycling through the second water pump 36 and the delivery pipe 37.

[0029] Among them, such as Figure 3 , Figure 4As shown, the slag scraping mechanism 33 includes a driven shaft 331, a drive shaft 332, a sprocket and chain assembly 333, a moving frame 334, a motor 335, and a scraper 336. The driven shaft 331 and the drive shaft 332 are rotatably connected in parallel to the side wall of the filter chamber 312. The driven shaft 331 and the drive shaft 332 are connected by transmission through two sets of sprocket and chain assemblies 333. The moving frame 334 is fixed between the chains of the two sets of sprocket and chain assemblies 333. The scraper 336 is fixed on the moving frame 334. The motor 335 is connected to the drive shaft 332 by transmission through the sprocket and chain assembly 333.

[0030] The working process of the slag scraping mechanism 33: The motor 335 drives the drive shaft 332 to rotate through the sprocket and chain assembly 333. The drive shaft 332 drives the driven shaft 331 to rotate through the sprocket and chain assembly 333, thereby driving the moving frame 334 and scraper 336 on the chain to move around the chain in a circular motion. When the scraper 336 moves vertically downward, it contacts the upper surface of the filter plate 32, thereby scraping the filter residue on the filter plate 32 to the outside. Finally, when the scraper 336 moves to the end of the filter plate 32, the filter residue is scraped to the outside of the filter plate 32.

[0031] As a preferred embodiment, such as Figure 5 As shown, slides 314 are provided on both sides of the filter chamber 312. The two sides of the filter plate 32 are movably connected to the two sets of slides 314. The filter plate 32 can be removed by pulling it outward, and the removed filter plate 32 can be deeply cleaned, making the cleaning of the filter plate 32 more convenient and improving the cleaning efficiency of the filter plate 32.

[0032] As a preferred embodiment, such as Figure 4 As shown, the front end of the filter plate 32 is provided with an upward-curving arc plate 321. When the scraper 336 moves to the end and rotates upward with the chain, the scraper 336 always fits against the arc plate 321 and discharges the filter residue to the outside at the top of the arc plate 321. By setting the arc plate 321, the filter residue can be effectively discharged to the outside, and the circulating liquid can also be prevented from splashing out.

[0033] As a preferred embodiment, such as Figure 3 , Figure 4 As shown, the water storage tank 31 is provided with a slag collection port 313 at the front end. The filter residue discharged by the slag scraping mechanism 33 falls into the slag collection port 313 and is then guided into other containers for collection through the slag collection port 313.

[0034] As a preferred embodiment, such as Figure 4 As shown, the water storage tank 31 is equipped with a level gauge 38 inserted into the water purification chamber 311. The level gauge 38 can display the water level information of the water purification chamber 311 in real time. When the water level of the water purification chamber 311 is lower than the set value, the external water supply system can be controlled to automatically add water.

[0035] The first water pump 34, filter tank 35, second water pump 36, level gauge 38, etc. of this utility model are purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A circulating spray type exhaust gas purification treatment device, comprising a spray tower (1), a support (2) and a spray liquid circulating mechanism (3), the spray tower (1) is fixedly installed on the support (2), the spray liquid circulating mechanism (3) is communicated with the spray tower (1), characterized in that: The spray liquid circulation mechanism (3) includes a water storage tank (31), a filter plate (32), a sludge scraping mechanism (33), a first water pump (34), a filter tank (35), a second water pump (36), and a delivery pipe (37). The water storage tank (31) includes a clean water chamber (311) and a filter water chamber (312). The filter plate (32) is installed in the filter water chamber (312). The sludge scraping mechanism (33) is installed above the filter plate (32). The inlet and outlet of the first water pump (34) are connected to the filter water chamber (312) and the filter tank (35) respectively. The outlet of the filter tank (35) is connected to the clean water chamber (311). The inlet and outlet of the second water pump (36) are connected to the clean water chamber (311) and the delivery pipe (37) respectively. The delivery pipe (37) is connected to the spray tower (1).

2. A cyclic spray type exhaust gas purification treatment apparatus according to claim 1, characterized by: The slag scraping mechanism (33) includes a driven shaft (331), a drive shaft (332), a sprocket and chain assembly (333), a moving frame (334), a motor (335), and a scraper (336). The driven shaft (331) and the drive shaft (332) are rotatably connected in parallel to each other on the side wall of the filter chamber (312). The driven shaft (331) and the drive shaft (332) are connected by transmission through two sets of sprocket and chain assemblies (333). The moving frame (334) is fixed between the chains of the two sets of sprocket and chain assemblies (333). The scraper (336) is fixed at the bottom of the moving frame (334). The motor (335) is connected by transmission to the drive shaft (332) through the sprocket and chain assembly (333).

3. The circulating spray-type waste gas purification and treatment device according to claim 1, characterized in that: The filter chamber (312) has slides (314) on both sides of its sidewalls, and the two sides of the filter plate (32) are movably connected to the two sets of slides (314).

4. The circulating spray-type waste gas purification and treatment device according to claim 1, characterized in that: The filter plate (32) has an upward-curving arc plate (321) at its front end.

5. The circulating spray-type waste gas purification and treatment device according to claim 1, characterized in that: The water storage tank (31) is provided with a slag collection port (313) at the front end.

6. The circulating spray-type waste gas purification and treatment device according to claim 1, characterized in that: The water storage tank (31) is equipped with a level gauge (38) that is inserted into the water purification chamber (311).

7. A circulating spray-type waste gas purification and treatment device according to any one of claims 1-6, characterized in that: The spray tower (1) includes a tower body (11), an air outlet (13) is provided on the top of the tower body (11), an air inlet (18) is provided on the bottom side of the tower body (11), and a water outlet is provided at the bottom of the tower body (11). Inside the tower body (11), from top to bottom, there are a demisting layer (12), a first spray assembly (14), a first packing layer (15), a second spray assembly (16), and a second packing layer (17). The first spray assembly (14) and the second spray assembly (16) are both connected to the conveying pipe (37).

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