Device for treating waste gas by spraying method

Abstract

The utility model belongs to the technical field of waste gas treatment, and discloses a waste gas treatment device by a spraying method, which comprises an adsorption tank and a water inlet pipe connected with a water pump, one side of the lower end of the adsorption tank is connected with a gas inlet pipe, and the top end of the adsorption tank is connected with an exhaust pipe. An upper spraying mechanism, an upper gas buffer layer, a lower spraying mechanism and a lower gas buffer layer are sequentially arranged in the adsorption tank at intervals from top to bottom, the joint of the gas inlet pipe and the adsorption tank is located below the lower gas buffer layer, and the upper spraying mechanism and the lower spraying mechanism are both connected with the water inlet pipe; the upper spraying mechanism is horizontally arranged, at least two upper spraying nozzles with downward openings are uniformly distributed at the bottom of the upper spraying mechanism at intervals, the lower spraying mechanism is of a cylindrical structure which is annularly distributed along the inner wall of the adsorption tank, and at least two lower spraying nozzles with openings facing the central axis of the adsorption tank are uniformly distributed on the inner side of the lower spraying mechanism at intervals. According to the waste gas purification device, spray water can be in full contact with waste gas, pollutants in the waste gas are fully absorbed, and the waste gas purification treatment effect is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and in particular relates to a device for treating waste gas by spraying method. Background Art

[0002] The waste gas spray treatment technology utilizes the spraying and absorption of water to adsorb pollutants in the waste gas into the water to achieve the purpose of purifying the air. The waste gas passes through the sprayer in the spray tower and is fully in contact with the water, so that the pollutants are dissolved or adsorbed in the water to achieve the purpose of purifying the air. The treated waste water undergoes multiple processes such as precipitation, filtration, and neutralization, and can be recycled or directly discharged after meeting the emission standards. The waste gas treatment spray device in the prior art cannot fully spray the waste gas in the spray tower, which results in the spray tower being unable to effectively purify the waste gas, so that the discharged waste gas does not meet the qualified emission standards, and also causes pollution to the atmospheric environment, which is not conducive to the protection of the atmospheric environment. Therefore, it is urgently needed to provide a spray method waste gas treatment device, which mainly optimizes the structure of the spray device so that the spray water can fully contact with the waste gas, fully absorb the pollutants in the waste gas, and effectively improve the waste gas purification treatment effect. Utility Model Content

[0003] The utility model aims at the deficiencies in the background technology and provides a device for treating waste gas by spraying method, so that spraying water can fully contact with waste gas, fully absorb pollutants in the waste gas, and effectively improve the waste gas purification treatment effect.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A device for treating waste gas by a spraying method, characterized in that it comprises an adsorption tank and a water inlet pipe, the water inlet pipe is connected to a water pump, one side of the lower end of the adsorption tank is connected to an air inlet pipe, and the top end is connected to an exhaust pipe, an upper spray mechanism, an upper gas buffer layer, a lower spray mechanism, and a lower gas buffer layer are sequentially arranged in the adsorption tank from top to bottom, the connection between the air inlet pipe and the adsorption tank is located below the lower gas buffer layer, the upper spray mechanism and the lower spray mechanism are both connected to the water inlet pipe, the upper spray mechanism is horizontally arranged and at least two upper spray nozzles with openings facing downward are evenly spaced at the bottom thereof, the lower spray mechanism is a cylindrical structure circumferentially distributed along the inner wall of the adsorption tank, and at least two lower spray nozzles with openings facing the central axis of the adsorption tank are evenly spaced at the inner side thereof.

[0006] Preferably, the upper spray mechanism includes a core tube and two side tube assemblies symmetrically connected to both sides of the core tube, each of the side tube assemblies includes at least two parallel and spaced side tube bodies, the upper end of the core tube is connected to the water inlet pipe, and the bottom end of the core tube and the bottom end of each side tube body are connected to at least two upper spray nozzles.

[0007] Preferably, each of the side tubes forms an angle of 0°-90° with the core tube.

[0008] Preferably, the lower spray mechanism comprises an upper ring tube and a lower ring tube connected to the inner wall of the adsorption tank, at least two vertical pipes are evenly spaced and connected between the upper ring tube and the lower ring tube, and each of the vertical pipes is connected to at least two lower spray nozzles.

[0009] Preferably, the upper gas buffer layer and the lower gas buffer layer have the same structure, both comprising a buffer plate, and at least two vent holes are evenly spaced apart on the buffer plate.

[0010] Preferably, a vertical cross-section of each of the vent holes is wavy.

[0011] Preferably, a filter screen is provided in the adsorption tank, and a movable cover plate is bolted and connected to one side of the adsorption tank located on the filter screen, and the filter screen is located below the connection between the air intake pipe and the adsorption tank.

[0012] Preferably, the filter screen is cooperatively connected with the plug-in groove provided on the inner wall of the adsorption tank, and a sealing gasket is provided between the filter screen and the inner wall of the plug-in groove, and a handle is provided on the side of the filter screen close to the movable cover plate.

[0013] Preferably, an arc-shaped cover with an opening facing downward is provided above the connection between the air intake pipe and the adsorption tank.

[0014] Preferably, a drain pipe is connected to the bottom end of the adsorption tank, and a drain valve is provided on the drain pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The utility model performs two spray treatments on the exhaust gas through the lower spray mechanism and the upper spray mechanism, and uses the gas buffer layer and the upper gas buffer layer to block the exhaust gas, slow down its rising speed, extend the rising path, and ensure that the spray water can fully contact and adsorb the pollutants in the exhaust gas, thereby improving the exhaust gas purification effect;

[0017] (2) The structural design of the upper spray mechanism and the lower spray mechanism of the utility model is novel and reasonable. The exhaust gas is first sprayed from the side and then sprayed from the top, which effectively improves the adsorption effect;

[0018] (3) The utility model is provided with a filter screen, which can effectively filter the wastewater and reduce the trouble of wastewater post-treatment. Moreover, the filter screen can be freely disassembled and assembled, which is convenient for regular replacement, maintenance and care, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the top view of the upper spray mechanism of the utility model;

[0022] Figure 3 This is a schematic diagram of the top view of the lower spray mechanism of the utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the lower spray mechanism of the utility model;

[0024] Figure 5 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0025] Figure 6 For this utility model Figure 1 Schematic diagram of the structure at B in the middle;

[0026] Figure 7 For this utility model Figure 1 Schematic diagram of the structure at C in the middle;

[0027] Figure 8 This is a schematic diagram of the arc cover structure of the utility model;

[0028] Fig. 9 This is a schematic diagram of the structure of the buffer plate of the utility model from a top view;

[0029] In the figure: 1, adsorption tank, 2, water inlet pipe, 3, water pump, 4, air inlet pipe, 5, exhaust pipe, 6, upper spray nozzle, 7, lower spray nozzle, 8, core pipe, 9, side pipe body, 10, upper ring pipe, 11, lower ring pipe, 12, vertical pipe, 13, buffer plate, 14, vent hole, 15, filter screen, 16, bolt, 17, movable cover plate, 18, plug-in groove, 19, sealing gasket, 20, handle, 21, arc cover, 22, drain pipe, 23, drain valve, 24, air pump. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 1 As shown, a spraying method for treating waste gas comprises an adsorption tank 1 and a water inlet pipe 2, the water inlet pipe is connected to a water pump 3, one side of the lower end of the adsorption tank is connected to an air inlet pipe 4, and the top end is connected to an exhaust pipe 5, an upper spray mechanism, an upper gas buffer layer, a lower spray mechanism, and a lower gas buffer layer are sequentially arranged in the adsorption tank from top to bottom, and the connection between the air inlet pipe and the adsorption tank is located below the lower gas buffer layer, combined with Figure 8 As shown, an arc-shaped cover 21 with an opening facing downward is provided above the connection between the air intake pipe and the adsorption tank, which can not only block the spray water to prevent the spray water from flowing into the air intake pipe, but also slow down the rising speed of the exhaust gas. Figure 6 and Fig. 9As shown, the upper gas buffer layer and the lower gas buffer layer have the same structure, both including a buffer plate 13, on which at least two vents 14 are evenly spaced, and the vertical cross-section of each vent is wavy, which prolongs the movement path of the exhaust gas, slows down its rising speed, and gives it the opportunity and time to fully contact with the spray water. The upper spray mechanism and the lower spray mechanism are both connected to the water inlet pipe. The upper spray mechanism is horizontally arranged and at least two upper spray nozzles 6 with downward openings are evenly spaced at its bottom. The lower spray mechanism is a cylindrical structure distributed circumferentially along the inner wall of the adsorption tank, and at least two lower spray nozzles 7 with openings facing the central axis of the adsorption tank are evenly spaced on its inner side. During actual use of the utility model, an air pump 24 is connected to the air inlet pipe to transport the exhaust gas to the adsorption tank through the air inlet pipe. The exhaust gas entering the adsorption tank moves upward and is fully contacted with water under the action of lateral spraying of the lower spray mechanism and downward spraying of the upper spray mechanism in turn, so that pollutants in the exhaust gas are adsorbed. The upper gas buffer layer and the lower gas buffer layer can block the exhaust gas and slow down its rising speed, thereby ensuring that the exhaust gas is more fully contacted with the spraying water, improving the air purification effect, and the purified clean air is discharged through the exhaust pipe; the waste water moves downward and is stored at the bottom of the adsorption tank, and a drain pipe 22 is connected to the bottom end of the adsorption tank, and a drain valve 23 is provided on the drain pipe, through which the waste water can be regularly recovered and processed for easy recycling.

[0034] like Figure 1 , Figure 2 and Figure 5 As shown, the upper spray mechanism includes a core tube 8 and two side tube assemblies symmetrically connected to both sides of the core tube, each side tube assembly includes at least two parallel and spaced side tube bodies 9, the upper end of the core tube is connected to the water inlet pipe, and the bottom end of the core tube and the bottom end of each side tube body are connected to at least two upper spray nozzles to ensure that the atomized water sprayed by the spray nozzles fully covers the interior of the adsorption tank and ensures sufficient contact with the pollutants in the exhaust gas moving upward. Each side tube body is at an angle of 0°-90° with the core tube, so that the adsorption is more uniform and sufficient, and the effect is better.

[0035] like Figure 3 , Figure 4 and Figure 6 As shown, the lower spray mechanism includes an upper ring tube 10 and a lower ring tube 11 connected to the inner wall of the adsorption tank, at least two vertical pipes 12 are evenly spaced and connected between the upper ring tube and the lower ring tube, at least two vertical pipes are distributed in a circular array, each vertical pipe is connected to at least two lower spray nozzles, the exhaust gas passes through the middle of the lower spray mechanism and moves upward, and multiple spray nozzles on its periphery spray the exhaust gas.

[0036] like Figure 1 and Figure 7As shown, in order to prevent pollutants in the exhaust gas from being adsorbed by water and causing precipitation, which affects the recycling of wastewater, a filter screen 15 is provided in the adsorption tank. The filter screen is located below the connection between the air intake pipe and the adsorption tank. The adsorption tank is located on one side of the filter screen and is connected to a movable cover plate 17 by bolts 16, which is convenient for disassembly and positioning of the filter screen for replacement, maintenance and maintenance. The filter screen is connected to the plug-in slot 18 provided on the inner wall of the adsorption tank, and a sealing gasket 19 is provided between it and the inner wall of the plug-in slot to play a sealing role. A handle 20 is provided on the side of the filter screen close to the movable cover plate, which is convenient for pulling out the filter screen for replacement. A sealing gasket is also provided at the connection between the movable cover plate and the adsorption tank. When the filter screen needs to be replaced, the bolts are removed and the movable cover plate is opened. The filter screen is pulled out by holding the handle. After replacing the new filter screen, the movable cover plate is fixed with bolts.

[0037] The working principle of the utility model is as follows:

[0038] like Figures 1 to 9 As shown, under the action of the air pump, the exhaust gas enters the adsorption tank 1 through the air inlet pipe 4, first passes through the obstruction of the lower gas buffer layer, enters the middle part of the lower spray mechanism, and contacts with the atomized water sprayed by multiple lower spray nozzles 7 on the vertical pipe 12 distributed circumferentially along the inner wall of the adsorption tank 1, completing the initial adsorption treatment, and then the pollutants that have not been completely adsorbed rise again with the gas, first pass through the obstruction of the upper gas buffer layer, and arrive at the bottom of the upper spray mechanism, and then fully contact with the atomized water sprayed by multiple upper spray nozzles 6 of the upper spray mechanism for secondary adsorption. After the pollutants are fully adsorbed, the clean air is discharged from the exhaust pipe 5 at the top of the adsorption tank 1.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A device for treating waste gas by spraying method, characterized in that: It includes an adsorption tank and a water inlet pipe, the water inlet pipe is connected to a water pump, one side of the lower end of the adsorption tank is connected to an air inlet pipe, and the top end is connected to an exhaust pipe, an upper spray mechanism, an upper gas buffer layer, a lower spray mechanism, and a lower gas buffer layer are sequentially arranged in the adsorption tank from top to bottom, the connection between the air inlet pipe and the adsorption tank is located below the lower gas buffer layer, the upper spray mechanism and the lower spray mechanism are both connected to the water inlet pipe, the upper spray mechanism is horizontally arranged, and at least two upper spray nozzles with openings facing downward are evenly distributed on the bottom, the lower spray mechanism is a cylindrical structure circumferentially distributed along the inner wall of the adsorption tank, and at least two lower spray nozzles with openings facing the central axis of the adsorption tank are evenly distributed on the inner side.

2. The device for treating waste gas by spraying method as claimed in claim 1, characterized in that: The upper spray mechanism includes a core tube and two side tube assemblies symmetrically connected to both sides of the core tube, each of the side tube assemblies includes at least two parallel and spaced side tube bodies, the upper end of the core tube is connected to the water inlet pipe, and the bottom end of the core tube and the bottom end of each side tube body are connected to at least two upper spray nozzles.

3. The device for treating waste gas by spraying method as claimed in claim 2, characterized in that: Each of the side tubes forms an angle of 0°-90° with the core tube.

4. The device for treating waste gas by spraying method as claimed in claim 1, characterized in that: The lower spray mechanism comprises an upper ring tube and a lower ring tube connected to the inner wall of the adsorption tank, at least two vertical pipes are evenly spaced and connected between the upper ring tube and the lower ring tube, and each vertical pipe is connected to at least two lower spray nozzles.

5. The device for treating waste gas by spraying method as claimed in claim 1, characterized in that: The upper gas buffer layer and the lower gas buffer layer have the same structure and both include a buffer plate, and at least two vent holes are evenly spaced and distributed on the buffer plate.

6. The device for treating waste gas by spraying method as claimed in claim 5, characterized in that: The vertical cross section of each vent hole is wave-shaped.

7. The device for treating waste gas by spraying method as claimed in claim 1, characterized in that: A filter screen is arranged in the adsorption tank, and a movable cover plate is bolted and connected to one side of the adsorption tank located on the filter screen, and the filter screen is located below the connection between the air intake pipe and the adsorption tank.

8. The device for treating waste gas by spraying method as claimed in claim 7, characterized in that: The filter screen is connected with the plug-in slot arranged on the inner wall of the adsorption tank, and a sealing gasket is arranged between the filter screen and the inner wall of the plug-in slot. A handle is arranged on the side of the filter screen close to the movable cover plate.

9. The device for treating waste gas by spraying method as claimed in claim 1, characterized in that: An arc-shaped cover with a downward opening is arranged above the connection between the air intake pipe and the adsorption tank.

10. The device for treating waste gas by spraying method as claimed in claim 1, characterized in that: The bottom end of the adsorption tank is connected with a drain pipe, and the drain pipe is provided with a drain valve.

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