Washing tower with automatic backwashing device

Abstract

The utility model provides a washing tower with an automatic backwashing device, which relates to the technical field of gas purification, comprises a tower body and a circulating water tank arranged at the bottom of the tower body in a penetrating manner, and is characterized in that a gas inlet pipe and a gas outlet pipe are respectively arranged on the side surface and the top of the tower body in a penetrating manner; a demisting layer is arranged above the gas inlet pipe in the tower body, the demisting layer is of a ring frame structure formed by vertically stacking, the upper layer and the lower layer in the demisting layer are filled with filler, and an outer ring pipe is embedded in the outer side of the middle of the demisting layer; an outer ring pipe structure used for flushing and washing is arranged in a demisting layer in the washing tower, and is matched with feeding of an automatically-controlled compression pump to flush a filler of the demisting layer when the washing tower is shut down, so that dust particles adhered to the surface of the demisting layer are removed, and blockage of the demisting layer during subsequent operation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas purification technical field more specifically, the utility model relates to a kind of washing tower with automatic backwashing device. BACKGROUND

[0002] Washing tower is suitable for the separation of mixed gas containing a small amount of dust, the components will not react, and the product should be easy to liquefy, dust and other impurities (also known as high-boiling substances) are not easy to liquefy or solidify, when mixed gas is introduced into the washing tower from the middle of the washing tower, due to the existence of product component liquid between the trays, the product component gas is liquefied at the same time, and part of it is evaporated, and the impurities cannot be liquefied or solidified, and when passing through the tray with liquid, they will be fixed by the product component liquid, producing a washing effect, widely used in industrial waste gas purification, dust removal and other aspects of pretreatment.

[0003] When the conventional washing tower is used to treat a large amount of particulate matter such as dust or paint mist, the particulate matter is easy to adhere to the surface when passing through the demisting layer, causing the top demisting layer to be blocked, resulting in poor discharge, affecting the exhaust effect.

[0004] Therefore, the utility model provides a washing tower with automatic backwashing device to effectively solve the problem of easy blocking of the demisting layer of the existing washing tower, affecting the actual discharge effect and efficiency. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that when the existing washing tower is used to treat particulate matter, the particulate matter is easy to adhere to the surface when passing through the demisting layer, causing the top demisting layer to be blocked, resulting in poor discharge, and the existing technology has problems, a washing tower with automatic backwashing device is provided.

[0006] The purpose and effect of the utility model are achieved by the following specific technical means: a tower body and a circulating water tank are provided, the circulating water tank is throughly arranged at the bottom of the tower body, characterized in that: an air inlet pipe and an air outlet pipe are throughly arranged on the side and top of the tower body respectively;

[0007] A demisting layer is arranged above the air inlet pipe in the tower body, the demisting layer is a ring frame structure stacked up and down, and the upper and lower layers of the demisting layer are filled with packing, an outer ring pipe is embedded on the outer side of the middle of the demisting layer, and a plurality of spray heads are annularly arranged on the outer ring pipe;

[0008] An inner ring pipe is arranged below the demisting layer and fixed to the tower body, a water pump is connected between the inner ring pipe and the circulating water tank, and a spray seat is arranged on the inner ring pipe.

[0009] A control box is fixed to the side of the tower body away from the air inlet pipe, a compression pump is arranged in the control box, a liquid pipe is connected between the compression pump and the outer ring pipe, and the compression pump is connected to the inner ring pipe.

[0010] Furthermore: the nozzle on the outer ring tube is a double-headed nozzle, and both ends of the nozzle are respectively immersed in the upper and lower fillers of the demisting layer.

[0011] A further preferred solution is that the middle portion of the ring frame structure of the demisting layer stacked up and down is an integrally formed mesh structure.

[0012] A further preferred solution is that a spray ring pipe is embedded in the spray seat, and a plurality of spray plugs are arranged at equal intervals at both ends of the spray ring pipe.

[0013] A further preferred solution is that a partition blade is provided between the demisting layer and the spray seat, a plurality of the partition blades are distributed at equal intervals, and a connecting rod driven by an electromagnetic force is provided on one side of the partition blade.

[0014] A further preferred solution is that a reflux bin is provided inside the tower body below the air inlet pipe, and the reflux bin is separated from the top of the tower body by a partition net.

[0015] Beneficial effects of the utility model:

[0016] This type of washing tower with an automatic backwash device is equipped with an outer ring pipe structure for flushing and washing in its internal demisting layer. It cooperates with the automatically controlled compression pump feed to flush the demisting layer filler when the washing tower is shut down to remove dust particles adhering to the surface of the demisting layer, avoiding clogging of the demisting layer during subsequent operation, effectively extending the service life of the demisting layer and improving the demisting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal planar structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal planar structure of the spray seat of the present invention;

[0021] Figure 4 This is a schematic diagram of the demisting layer structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the planar structure of the demisting layer of the present utility model.

[0023] Figure 1-Figure 5 Middle: tower body 1, circulating water tank 2, air inlet pipe 3, exhaust pipe 4, control box 5, water pump 6, demisting layer 7, spray seat 8, inner ring pipe 9, reflux bin 10, compression pump 11, spray ring pipe 12, spray plug 13, outer ring pipe 14, partition blade 15, liquid pipe 16. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above objectives, features and advantages of the present application, the following further describes the present application with reference to the accompanying drawings. Figure 1-Figure 5 and the detailed description. The following examples are merely illustrative of the present application. It must be stressed that the disclosed examples do not limit the scope of the present application. Rather, modifications and improvements made without departing from the scope of the present application are also encompassed by the patent protection of the present application.

[0025] A washing tower with automatic backwashing device, comprising a tower body 1 and a circulating water tank 2, the circulating water tank 2 is throughly arranged at the bottom of the tower body 1, characterized in that: the side and top of the tower body 1 are throughly arranged with an air inlet pipe 3 and an air outlet pipe 4 respectively;

[0026] A demisting layer 7 is arranged above the air inlet pipe 3 inside the tower body 1, the demisting layer 7 is a ring frame structure stacked up and down, and the upper and lower layers in the demisting layer 7 are both filled with fillers, and an outer ring pipe 14 is embedded on the outer side of the middle part of the demisting layer 7, and a plurality of spray heads are annularly distributed on the outer ring pipe 14;

[0027] An inner ring pipe 9 fixed with the tower body 1 is arranged below the demisting layer 7, and a water pump 6 is connected between the inner ring pipe 9 and the circulating water tank 2, and a spray seat 8 is arranged on the inner ring pipe 9;

[0028] A control box 5 is fixed on the side of the tower body 1 away from the air inlet pipe 3, a compression pump 11 is arranged in the control box 5, a liquid pipe 16 is connected between the compression pump 11 and the outer ring pipe 14, and the compression pump 11 is connected with the inner ring pipe 9;

[0029] The washing tower with automatic backwashing device, based on the spray washing separation mode of the washing tower, takes the air outlet pipe 4 and the air inlet pipe 3 distributed on the top and bottom of the tower body 1 as the discharge end of the gas and the input end of the gas to be treated respectively, when processing, the gas enters the tower body 1 from the air inlet pipe 3, in the process, the spray liquid in the circulating water tank 2 is transported to the inner ring pipe 9 end by the water pump 6, the spray liquid is input to the spray seat 8 through the inner ring pipe 9, and then is sprayed from top to bottom to the inside of the tower body 1 by the spray seat 8, with the upward flow of the gas, the gaseous gas and the liquid spray liquid are reversely contacted and neutralized and absorbed in the fillers of the demisting layer 7, and the finally separated dust particles are mixed into the liquid, and the gas is discharged from the air outlet pipe 4;

[0030] The mist removal layer 7 is filled with filler in a stacked ring frame structure, and the middle layer is separated by the outer ring pipe 14. When the scrubbing tower stops processing gas, the liquid in the inner ring pipe 9 is pumped into the liquid pipe 16 by controlling the brake of the compression pump 11 in the control box 5, and is compressed and delivered to each nozzle through the outer ring pipe 14. The filler in the mist removal layer 7 is washed by the nozzle to avoid the influence of dust particles adhered in the mist removal layer 7 on the actual exhaust effect during subsequent processing gas;

[0031] Compared with the traditional scrubbing tower, the scrubbing tower flushes the mist removal layer through the built-in backwashing structure to ensure that the scrubbing tower can maintain the exhaust effect of the mist removal layer during multiple frequency working conditions to ensure the dust removal stability and efficiency of the scrubbing tower.

[0032] Further, the nozzle on the outer ring pipe 14 is a double-head spray head, and the two ends of the nozzle respectively penetrate into the upper and lower fillers of the mist removal layer 7. The double-head spray head structure can make the liquid output by the compression pump 11 penetrate through the outer ring pipe 14 to quickly flush the filler end of the mist removal layer 7, thereby accelerating the overall flushing efficiency.

[0033] Further, the middle part of the stacked ring frame structure of the mist removal layer 7 is an integrally formed mesh surface structure, which can effectively support the filled filler. When a multi-surface spherical filler with a large filling height is selected, the mesh surface structure can effectively ensure that the flushing liquid can penetrate the entire filling layer.

[0034] On the basis of the above, the separation blades 15 are arranged at intervals between the mist removal layer 7 and the spray seat 8, and the separation blades 15 are arranged at intervals on one side of the spray seat 8. The separation blades 15 are connected to the electromagnetic drive link. The upper and lower flushing modes of the nozzles of the outer ring pipe 14 can further cooperate with the flushing of the electromagnetic drive separation blades. In the normal working condition, the separation blades 15 are perpendicular to the mist removal layer 7, and the gap between the separation blades 15 ensures the normal passage of the gas. When flushing, the separation blades 15 are rotated by 90 degrees through the switching of the connecting rod, so that the gap between the separation blades 15 is closed, and the entire mist removal layer 7 is immersed in the liquid flow of the upper and lower spraying, thereby improving the contact effect of the flushing liquid flow and the mist removal layer 7, and improving the flushing effect.

[0035] Further, the spray ring pipe 12 is embedded in the spray seat 8, and a plurality of spray plugs 13 are arranged at intervals at both ends of the spray ring pipe 12. The scrubbing tower adopts the spray plugs 13 arranged and distributed as the spray structure inside the tower body 1. The spray liquid flows to the spray ring pipe 12 after passing through the inner ring pipe 9, and is sprayed into the tower body 1 through the spray plugs 13. The spray plugs 13 arranged and distributed can improve the spray area and ensure the mixing effect of the gas and the spray liquid.

[0036] Furthermore, a reflux bin 10 is provided inside the tower body 1 below the air inlet pipe 3, and the reflux bin 10 is separated from the top of the tower body 1 by a partition net. The reflux bin 10 serves as a separation space between the inside of the tower body 1 and the circulating water tank 2 to collect the spray liquid sprayed from top to bottom into the circulating water tank 2, and filter the particulate matter therein through the partition net so as to supply the spray liquid to the circulating water tank 2 for subsequent times.

Claims

1. A washing tower with an automatic backwash device, comprising a tower body and a circulating water tank, wherein the circulating water tank is arranged through the bottom of the tower body, and is characterized in that: The side and top of the tower body are respectively provided with an air intake pipe and an exhaust pipe; A demisting layer is provided above the air inlet pipe inside the tower body. The demisting layer is a ring frame structure composed of upper and lower stacks, and the upper and lower layers of the demisting layer are filled with fillers. An outer ring tube is installed on the outer side of the middle of the demisting layer, and a plurality of nozzles are distributed in an annular manner on the outer ring tube. An inner ring pipe fixed to the tower body is provided under the demisting layer, and a water pump is externally connected between the inner ring pipe and the circulating water tank, and a spray seat is provided on the inner ring pipe; A control box is fixed on one side of the tower body away from the air inlet pipe. A compression pump is arranged in the control box. A liquid pipe is connected between the compression pump and the outer ring pipe, and the compression pump is connected to the inner ring pipe.

2. The washing tower with an automatic backwashing device according to claim 1, characterized in that: The nozzle on the outer ring tube is a double-headed nozzle, and both ends of the nozzle are respectively immersed in the upper and lower fillers of the demisting layer.

3. The washing tower with an automatic backwashing device according to claim 1, characterized in that: The middle part of the ring frame structure of the demisting layers stacked up and down is an integrally formed mesh structure.

4. The washing tower with an automatic backwashing device according to claim 1, characterized in that: A spray ring pipe is embedded in the spray seat, and a plurality of spray plugs are arranged at equal intervals at both ends of the spray ring pipe.

5. The washing tower with an automatic backwashing device according to claim 1, characterized in that: A partition blade is provided at the interval between the demisting layer and the spray seat. A plurality of the partition blades are distributed at equal intervals, and a connecting rod driven by an electromagnetic force is provided in linkage with one side of the partition blade.

6. The washing tower with an automatic backwashing device according to claim 1, characterized in that: A reflux bin is provided below the air inlet pipe inside the tower body, and the reflux bin is separated from the top of the tower body by a partition net.

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