CN216498266U - Waste gas spraying device - Google Patents

Abstract

The utility model provides a waste gas spraying device which comprises a cylindrical tower body, wherein a spraying device and a filter screen positioned right below the spraying device are arranged in the tower body, and the filter screen consists of an annular support frame and a mesh bag; two rotating shafts are rotatably inserted into the peripheral wall of the tower body, the two rotating shafts are arranged along the radial direction of the tower body and are symmetrically distributed on two sides of the supporting frame, and the outer end of at least one of the two rotating shafts extends out of the tower body; the tower body is characterized in that at least one pair of first jacks is radially arranged on the peripheral wall of the support frame, the two first jacks of the same pair of first jacks are symmetrically distributed on two sides of the support frame, second jacks aligned with the first jacks one to one are arranged on the peripheral wall of the tower body, and a positioning pin is inserted into the second jacks, aligned with the first jacks, of each first jack in a matched mode. The utility model can clean and reuse the filter screen without detaching the filter screen.

Description

Waste gas spraying device

Technical Field

The utility model relates to the field of environment-friendly equipment, in particular to a waste gas spraying device.

Background

At present, chemical plants, garbage treatment plants, sewage treatment plants, feed plants, fertilizer processing plants, livestock and poultry breeding and other industries are easy to generate waste gas in production, and the waste gas is usually filtered by a vertical filtering device. Current vertical filter equipment includes the tower body, the bottom of tower body is equipped with gas inlet, top and is equipped with gas outlet, the top of tower body is provided with spray set, and during the use, waste gas is followed gas inlet gets into inside the tower body and the perpendicular upflow from bottom to top, clean gas after spraying and purifying by gas outlet discharges, simultaneously, forms at the bottom of the tower and sprays liquid. Current vertical filter equipment sprays liquid through set up the filter wheel in tower body bottom and filters purification, it is radial radiation distribution and forms by many active carbon filter screens to filter the wheel, but current vertical filter equipment the filter wheel structure is complicated, and is with high costs to, need change filter wheel or filter screen when the filter screen blocks up, it is very troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an exhaust gas spraying device which is simple in structure and can be cleaned and reused without disassembling a filter screen.

The technical scheme for realizing the aim of the utility model is as follows: a waste gas spraying device comprises a cylindrical tower body, wherein a gas inlet and a gas outlet are formed in the tower body, and the gas outlet is positioned above the gas inlet;

a spraying device is arranged in the tower body and is positioned above the air inlet and below the air outlet;

a filter screen capable of receiving spray liquid of the spray device is arranged right below the spray device, the filter screen is positioned below the air inlet and consists of an annular support frame and a mesh bag which is fixed in the support frame and covers a central hole of the support frame;

two rotating shafts are rotatably inserted into the tower body peripheral wall corresponding to the peripheral wall of the supporting frame, the two rotating shafts are arranged along the radial direction of the tower body and symmetrically distributed on two sides of the supporting frame, the inner ends of the two rotating shafts are detachably connected with the supporting frame respectively, and the outer end of at least one of the two rotating shafts extends out of the tower body;

the outer peripheral wall of the support frame is provided with at least one pair of first jacks, two first jacks in the same pair of first jacks are symmetrically distributed on two sides of the support frame, each first jack is arranged along the radial direction of the support frame, the peripheral wall of the tower body is provided with second jacks aligned with the first jacks one by one, and each first jack is matched with the second jack aligned with the first jack and inserted with a positioning pin;

the bottom of the tower body is in an inverted cone shape, a sewage draining outlet is formed in the bottommost end of the tower body, and a sealing piece capable of opening or sealing the sewage draining outlet is arranged at the sewage draining outlet.

The filter screen can rotate in the tower body to switch between the upright state and the inverted state, and the waste gas is filtered in the upright state and the filter screen is washed in the inverted state, so that the filter screen is cleaned and reused without being detached, and the tower is simple in structure and convenient to assemble.

Preferably, a rotating handle is fixedly arranged at the outer end of the rotating shaft extending out of the tower body.

Preferably, a low-pressure water pump and a high-pressure water pump are arranged outside the tower body, and the spraying device is respectively communicated with a water outlet of the low-pressure water pump and a water outlet of the high-pressure water pump through a spraying water inlet pipe to supply water. When waste gas is filtered, the low-pressure water pump is started and closed to supply water to the spraying device, and when the filter screen is washed, the high-pressure water pump is started and closed to supply water to the spraying device. Furthermore, a backflow pipeline communicated with the bottom of the tower body is arranged outside the tower body, the backflow pipeline is communicated with a water inlet of the low-pressure water pump and a water inlet of the high-pressure water pump respectively, and a valve is arranged on the backflow pipeline. When the waste gas is filtered, the filtered spraying liquid can be supplied to the spraying device by opening the valve, and the filtered spraying liquid is recycled. In the specific implementation process, a water replenishing pipe is further arranged at the bottom of the tower body.

Preferably, an annular water baffle is fixedly arranged in the tower body around the inner peripheral wall of the tower body, the central line of the annular water baffle coincides with the central line of the tower body, the annular water baffle is positioned below the air inlet and above the filter screen, the vertical projection of the annular water baffle covers the support frame, and the annular water baffle is arranged in the tower body along the radial direction from the inner peripheral wall of the tower body to the central line direction of the tower body in an inclined and downward mode. Because gaps can exist between the support frame and the inner peripheral wall of the tower body in a larger or smaller manner, the arrangement of the annular water baffle plate can prevent the spray liquid from flowing downwards through the gaps, so that all the spray liquid can be filtered by a filter screen; and the spraying liquid is usually a liquid with acid bias or alkali bias, so that the corrosion of a connecting piece between the support frame and the tower body wall is avoided.

Preferably, a defogging layer is further arranged in the tower body and is positioned above the spraying device. And the waste gas passes through the demisting layer from bottom to top to remove water mist.

Preferably, the mesh bag is a hard metal mesh or a flexible mesh.

Drawings

Fig. 1 is a longitudinal sectional structural view of the exhaust gas spraying apparatus of the present invention with a filter screen in a front-up state, in which a chain line is a center line of the tower body;

fig. 2 is a longitudinal sectional structural view of the exhaust gas spraying apparatus of the present invention with the filter screen in an inverted state, in which the dotted line is the center line of the tower body;

FIG. 3 is a cross-sectional structural view of the exhaust gas spray device of the present invention taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is an enlarged view of portion C of FIG. 3;

fig. 6 is an enlarged view of a portion D in fig. 3.

Detailed Description

The following detailed description of the embodiments of the exhaust gas spraying apparatus according to the present invention will be made with reference to the accompanying drawings:

with reference to fig. 1 to 4, a waste gas spraying device includes a cylindrical tower body 10, an air inlet 11 and an air outlet 12 are disposed on the tower body 10, and the air outlet 12 is located above the air inlet 11;

a spraying device 20 is arranged in the tower body 10, and the spraying device 20 is positioned above the air inlet 11 and below the air outlet 12;

a filter screen 30 capable of receiving the spray liquid of the spray device 20 is arranged right below the spray device 20, the filter screen 30 is positioned below the air inlet 11, and the filter screen 30 is composed of a circular support frame 31 and a mesh bag 32 which is fixed in the support frame 31 and covers a central hole of the support frame 31;

two rotating shafts 40 are rotatably inserted into the peripheral wall of the tower body 10 corresponding to the peripheral wall of the support frame 31, the two rotating shafts 40 are both arranged along the radial direction of the tower body 10 and symmetrically distributed on both sides of the support frame 31, the inner ends of the two rotating shafts 40 are respectively detachably connected with the support frame 31, and the outer end of at least one rotating shaft 40 of the two rotating shafts 40 extends out of the tower body 10;

at least one pair of first jacks 311 is formed in the peripheral wall of the support frame 31, two first jacks 311 in the same pair of first jacks 311 are symmetrically distributed on two sides of the support frame 31, each first jack 311 is formed in the radial direction of the support frame 31, second jacks 13 aligned with the first jacks 311 one by one are formed in the peripheral wall of the tower body 10, and a positioning pin 50 is cooperatively inserted in each first jack 311 and the aligned second jack 13;

the bottom of the tower body 10 is in an inverted cone shape, a sewage discharge outlet 14 is arranged at the bottommost end of the tower body 10, and a sealing piece 60 capable of opening or sealing the sewage discharge outlet 14 is arranged at the sewage discharge outlet 14;

wherein, the mesh bag 32 is a hard metal mesh.

When in use, the support frame 31 of the filter screen 30 is firstly installed with the two rotating shafts 40, and at the moment, the filter screen 30 can rotate by taking the two rotating shafts 40 as central shafts; then, the filter screen 30 is fixedly installed in the tower body 10 by rotating until the first insertion holes 311 on the support frame 31 of the filter screen 30 are aligned with the second insertion holes 13 on the tower body 10 and inserting the positioning pins 50 into the second insertion holes 13 aligned with the first insertion holes 311, and at this time, the filter screen 30 is in a positive state that the upper surface faces downward and the lower surface faces upward; and then, starting the spraying device 20 to filter waste gas, wherein the waste gas enters the tower body 10 from the gas inlet 11 and flows from bottom to top, the clean gas which is sprayed and purified by the spraying device 20 is discharged from the gas outlet 12, spraying liquid which is formed after spraying flows from top to bottom and is filtered by the filter screen 30 to remove large-particle materials, and the filtered spraying liquid is stored at the bottom of the tower body 10.

When the upper surface of the filter screen 30 is blocked due to the accumulation of too many larger particulate matters, the spraying device 20 is closed, the sealing member 60 at the sewage outlet 14 is pulled down to discharge the filtered spraying liquid stored at the bottom of the tower body and collect the filtered spraying liquid for later use, then all the positioning pins 50 are pulled out, and the rotating shaft 40 is rotated outside the tower body 10 to extend out of the outer end of the tower body 10, so that the filter screen 30 rotates by taking the two rotating shafts 40 as a central shaft, and the larger particulate sewage which is not tightly attached to the upper surface of the filter screen 30 falls to the bottom of the tower body 10 and is discharged from the sewage outlet 14; then, the filter screen 30 is rotated to an inverted state that the upper surface of the filter screen faces downward and the lower surface of the filter screen faces upward, and the positioning pins 50 are inserted into the second insertion holes 13 aligned with the first insertion holes 311 in the current position state again to fix the filter screen 30; then, starting the spraying device 20 to wash the filter screen 30, and washing the larger-particle dirt adhered to the upper surface of the filter screen 30 and discharging the dirt through the sewage discharge outlet 14; then the sewage draining exit 14 is closed again, and the filter screen 30 is rotated to the upright position with the upper surface facing upwards and the lower surface facing downwards to carry out the next round of waste gas filtering operation.

The filter screen 30 of the utility model can rotate in the tower body 10 to switch between the upright state and the inverted state, and the waste gas is filtered when the filter screen is in the upright state and the filter screen is washed when the filter screen is in the inverted state, so that the filter screen 30 can be cleaned and reused without being detached, and the utility model has simple structure and convenient assembly.

Preferably, as shown in fig. 1 to 3, a rotating handle 70 is fixedly arranged at an outer end of the rotating shaft 40 extending out of the tower body 10. In a specific implementation, the rotating handle 70 is a rotating rod, or a rotating wheel or other common handle that facilitates the rotation of the rotating shaft 40.

Preferably, as shown in fig. 1 and 2, a low-pressure water pump 80 and a high-pressure water pump 90 are disposed outside the tower body 10, and the spraying device 20 is respectively communicated with the water outlet 81 of the low-pressure water pump 80 and the water outlet 91 of the high-pressure water pump 90 through a spraying water inlet pipe 100 for supplying water. When the exhaust gas is filtered, the low-pressure water pump 80 is started and the high-pressure water pump 90 is closed to supply water to the spraying device 20, and when the filter screen 30 is washed, the high-pressure water pump 90 is started and the low-pressure water pump 80 is closed to supply water to the spraying device 20. Of course, the exhaust gas filtering and the flushing filter screen can also share one water pump. Further, as shown in fig. 1 and 2, a backflow pipeline 110 communicated with the bottom of the tower body 10 is arranged outside the tower body 10, the backflow pipeline 110 is respectively communicated with the water inlet 82 of the low pressure water pump 80 and the water inlet 92 of the high pressure water pump 90, and a valve 120 is arranged on the backflow pipeline 110. When the waste gas is filtered, the filtered spray liquid can be supplied to the spraying device 20 by opening the valve 120 to recycle the filtered spray liquid; when the filter screen is washed, the valve is closed, so that the high-pressure water pump and the low-pressure water pump can be prevented from being blocked by the washed dirt. Of course, the water supply source of the spraying device 20 can also be a tap water supply system. In the specific implementation process, as shown in fig. 1 and fig. 2, a water replenishing pipe 130 is further disposed at the bottom of the tower body 10.

Preferably, as shown in fig. 1 and 2, an annular water baffle 140 is fixedly disposed in the tower body 10 around the inner circumferential wall thereof, the center line of the annular water baffle 140 coincides with the center line of the tower body 10, the annular water baffle 140 is located below the air inlet 11 and above the filter screen 30, the vertical projection of the annular water baffle 140 covers the support frame 31, and the annular water baffle 140 is disposed along the radial direction thereof, and is inclined downward from the inner circumferential wall of the tower body 10 to the center line of the tower body 10. Because a gap is formed between the support frame 31 and the inner peripheral wall of the tower body 10, the annular water baffle 140 can prevent the spray liquid from flowing downwards through the gap, thereby ensuring that all the spray liquid can be filtered by the filter screen 30; and the spraying liquid is usually a liquid with acid bias or alkali bias, so that the corrosion of a connecting piece between the support frame and the tower body wall is avoided. Of course, the ring-shaped water guard 140 may not be provided in the exhaust gas spray device of the present invention, and in this case, the gap between the supporting frame 31 and the inner circumferential wall of the tower body 10 may be controlled to be as small as possible. The ring-shaped water guard 140 does not interfere with the rotation of the filter screen 30.

Preferably, as shown in fig. 1 and 2, a defogging layer 150 is further disposed in the tower body 10, and the defogging layer 150 is located above the spray device. The waste gas passes through the demisting layer 150 from bottom to top to remove water mist.

The mesh bag 32 may be a hard metal mesh (see fig. 1 and 2), but the mesh bag 32 may also be a flexible mesh, and when the mesh bag is a flexible mesh, the middle of the mesh bag 32 automatically falls down under the action of gravity when the mesh bag is in an inverted state, that is, the mesh bag 32 is in an inverted state and has substantially the same shape as the mesh bag in the upright state.

In a specific implementation, the aperture of the mesh bag 32 of the filter screen 30 can be selected according to the size of particulate dirt in exhaust gas discharged from different factories; the support frame 31 and the rotating shaft 40 can be detachably connected through a bolt fixing structure or a screw (as shown in fig. 4 and 5); the sealing piece 60 can be a rubber plug, and can also be other common detachable sealing structures; a through hole for the rotating shaft 40 to pass through is formed in the peripheral wall of the tower body 10, and the outer peripheral wall of the rotating shaft 40 is connected with the inner wall of the through hole through a bearing (as shown in fig. 6), so that the rotating shaft 40 can be rotatably inserted into the peripheral wall of the tower body 10.

For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all should be considered as belonging to the protection scope of the utility model.

Claims (8)

1. A waste gas spraying device comprises a cylindrical tower body, wherein a gas inlet and a gas outlet are formed in the tower body, and the gas outlet is positioned above the gas inlet;

a spraying device is arranged in the tower body and is positioned above the air inlet and below the air outlet; the method is characterized in that:

a filter screen capable of receiving spray liquid of the spray device is arranged right below the spray device, the filter screen is positioned below the air inlet and consists of an annular support frame and a mesh bag which is fixed in the support frame and covers a central hole of the support frame;

two rotating shafts are rotatably inserted into the tower body peripheral wall corresponding to the peripheral wall of the supporting frame, the two rotating shafts are arranged along the radial direction of the tower body and symmetrically distributed on two sides of the supporting frame, the inner ends of the two rotating shafts are detachably connected with the supporting frame respectively, and the outer end of at least one of the two rotating shafts extends out of the tower body;

the outer peripheral wall of the support frame is provided with at least one pair of first jacks, two first jacks of the same pair of first jacks are symmetrically distributed on two sides of the support frame, each first jack is arranged along the radial direction of the support frame, the peripheral wall of the tower body is provided with second jacks aligned with the first jacks one by one, and each first jack is matched with the second jack aligned with the first jack and inserted with a positioning pin;

the bottom of the tower body is in an inverted cone shape, a sewage draining outlet is arranged at the bottom end of the tower body, and a sealing piece capable of opening or sealing the sewage draining outlet is arranged at the sewage draining outlet.

2. An exhaust gas spraying device as set forth in claim 1, wherein: and a rotating handle is fixedly arranged at the outer end of the rotating shaft extending out of the tower body.

3. An exhaust gas spraying device as set forth in claim 1, wherein: the tower body is externally provided with a low-pressure water pump and a high-pressure water pump, and the spraying device is respectively communicated with the water outlet of the low-pressure water pump and the water outlet of the high-pressure water pump through a spraying water inlet pipe to supply water.

4. An exhaust gas spraying device as set forth in claim 3, wherein: the tower body is externally provided with a return pipeline communicated with the bottom of the tower body, the return pipeline is respectively communicated with the water inlet of the low-pressure water pump and the water inlet of the high-pressure water pump, and the return pipeline is provided with a valve.

5. An exhaust gas spraying device as set forth in claim 4, wherein: and a water replenishing pipe is also arranged at the bottom of the tower body.

6. An exhaust gas spraying device as set forth in claim 1, wherein: the tower body is internally and fixedly provided with an annular water baffle around the inner peripheral wall of the tower body, the central line of the annular water baffle is coincided with the central line of the tower body, the annular water baffle is positioned below the air inlet and above the filter screen, the vertical projection of the annular water baffle covers the support frame, and the annular water baffle is arranged in the tower body along the radial direction from the inner peripheral wall of the tower body to the central line direction of the tower body in an inclined and downward manner.

7. An exhaust gas spraying device as set forth in claim 1, wherein: and a defogging layer is also arranged in the tower body and is positioned above the spraying device.

8. An exhaust gas showering device as claimed in claim 1, characterized in that: the mesh bag is a hard metal mesh or a flexible mesh.

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