CN110899015A

CN110899015A - A wind that makes an uproar send spray gun for pressing down dirt removes haze

Info

Publication number: CN110899015A
Application number: CN201911387600.7A
Authority: CN
Inventors: 熊佑豪; 钟旭; 张明举
Original assignee: Chongqing Jia Tian Environmental Protection Engineering Co Ltd
Current assignee: Chongqing Jia Tian Environmental Protection Engineering Co Ltd
Priority date: 2019-08-29
Filing date: 2019-12-30
Publication date: 2020-03-24
Also published as: CN110721845A; CN110479525A; CN211887514U

Abstract

The invention discloses a noise-reduction air-supply spray gun for dust suppression and haze removal, which comprises an air duct (15), wherein the air duct (15) is a multilayer bent pipe, micropores are uniformly distributed on each pipe layer in the air duct, and an air outlet (17) is arranged at the top of an inner pipe of the air duct (15); sawteeth are uniformly distributed on the circumference of the pipe orifice of the air outlet (17), and a water supply ring cylinder (14) is sleeved on the outer layer of the air outlet (17); the top cover of the water supply ring cylinder (14) is a front cover (11), the side wall of the water supply ring cylinder (14) is provided with a water inlet (13) connected with a hose, and the front cover (11) is provided with an atomizing nozzle (19); the lower end of the air duct (15) is provided with a spray gun connecting end (16). The invention has the advantages that: utilize centrifugal fan to blow the farther distance with atomizing water, increased the atomizing scope, each inside pipe layer of dryer sets up the micropore to set up the sawtooth at the air outlet mouth of pipe, effectively reduced centrifugal fan's air current noise.

Description

A wind that makes an uproar send spray gun for pressing down dirt removes haze

Technical Field

The invention belongs to the technical field of environmental management, and particularly relates to an air-assisted spray gun with a noise reduction function, which reduces the noise of a high-pressure fan and an outlet of the spray gun, and is particularly suitable for large-area dust removal, haze removal and cooling spraying operation over cities.

Background

With the rapid development of industry, the living standard and quality of life of people are increasing day by day, the gathering of urban population, the felling of forest vegetation and air pollution are obvious day by day, and the city is covered with a layer of dust, especially in winter, industrial waste gas is discharged in a large amount, and common haze and sand storm weather cause that the city always covers a piece of dust, which affects traffic safety, daily outgoing and body health of people. The dust suppression and haze removal system in the prior art mostly adopts atomized water, and the dust suppression, haze removal and cooling effects are realized in a large range through the atomization of water.

A fog gun machine is a common dust suppression and haze removal device and is applied to a fixed type and a vehicle-mounted type, a spraying device of the fog gun machine is characterized in that an annular water pipe is arranged in a gradually-expanding air cylinder at the outlet of a jet fan, an atomizing nozzle is arranged on the annular water pipe, water is pressurized by a water pump and then is sprayed out from the atomizing nozzle, the water and the air are premixed in the gradually-expanding air cylinder, and the sprayed water mist is blown into the air by high-speed airflow generated by the jet fan. The disadvantages of this spray device are:

1. the water mist generated after pressurization causes obstruction to the air outlet flow, so that high-speed wind energy and jet water energy are mutually offset, and the matched jet fan has high power and high power consumption;

2. the wind speed is reduced due to the gradual expansion of the wind barrel, the spraying distance is reduced, and the requirement of the wind delivery distance can be met only by increasing the air delivery, so that the diameter of the air outlet of the fog gun machine is large, the air quantity is large, the water consumption is high, and the resource waste is serious;

3. the atomizing position of the atomizing device is fixed, the atomizing position of the vehicle-mounted fog gun machine is changed by automobile transportation and manual operation, the labor cost is high, dust falling operation can be only carried out on roads and low altitudes, and the application range is narrow.

4. The fog gun machine uses a powerful jet fan which has a unique structure, so that the air inlet and the air outlet of the air cylinder cannot be subjected to noise reduction treatment, the running noise is high, and the fog gun machine is serious in disturbance to residents.

Disclosure of Invention

Aiming at the problems in the prior art, the technical problem to be solved by the invention is to provide the noise-reduction air-supply spray gun for dust suppression and haze removal, which can blow water mist along the wind, so that the wind energy and the sprayed water energy are superposed, the distance for blowing the water mist under the condition of equal wind force is increased, and meanwhile, the air flow noise at the outlet of the spray gun is effectively reduced.

The technical problem to be solved by the invention is realized by the technical scheme, which comprises an air duct, wherein the air duct is a plurality of layers of bent pipes, micropores are uniformly distributed on each pipe layer in the air duct, and an air outlet is arranged at the top of an inner pipe of the air duct; sawteeth are uniformly distributed on the circumference of the pipe orifice of the air outlet, and a water supply ring cylinder is sleeved on the outer layer of the air outlet; the top cover of the water supply ring cylinder is a front cover, the side wall of the water supply ring cylinder is provided with a water inlet connected with a hose, and the front cover is provided with an atomizing nozzle; the lower end of the air duct is provided with a spray gun connecting end.

The atomizing nozzle receives pressurized water entering from a water inlet on the side wall of the water supply ring cylinder and sprays the pressurized water into water mist; the direction of the high-speed airflow conveyed to the air outlet of the air duct by the centrifugal fan is consistent with the direction of the sprayed water mist, so that two energy superpositions of wind energy and sprayed water energy are formed, the obstruction of the water mist to the air outlet airflow is overcome, the blowing distance of the water mist is increased, or the power of the fan is correspondingly reduced.

Because the wind cylinder is a multilayer bent pipe, and all pipe layers inside the wind cylinder are uniformly provided with micropores, an upper section of straight pipe silencer, a lower section of straight pipe silencer and a middle silencing elbow are formed; the inside each pipe layer of straight tube muffler and amortization elbow all evenly distributes and has opened the micropore, and when the noise of high-pressure high-speed centrifugal fan transmitted straight tube muffler and amortization elbow department, the sound wave passed through the micropore and transmitted the intermediate layer of multilayer muffler in, forms reciprocating motion's gas post in micropore department, turns into heat energy with the kinetic energy of sound wave, plays the effect that the amortization was fallen and is made an uproar. When the high-speed airflow passes through the silencing elbow, the longitudinal sound wave of the centrifugal fan is vertical to the micropores on the inner-layer pipe at the silencing elbow, and the longitudinal sound wave can more easily enter the interlayer through the micropores, so that most of axially transmitted noise can be eliminated. The sawteeth are uniformly distributed on the circumference of the pipe orifice of the air outlet, so that the eddy of the air flow at the outlet of the air duct is further reduced, and the air flow noise at the air outlet of the air duct of the spray gun is effectively reduced.

Therefore, the technical effects of the invention are as follows:

1. the water energy and the wind energy are superposed by utilizing the high-speed airflow generated by the centrifugal fan, and the atomized water is blown to a longer distance, so that the atomization range is enlarged, and the large-area dust suppression, haze removal and cooling operation is realized;

2. the inner pipe of the air duct is provided with micropores, and the mouth of the air outlet is provided with sawteeth, so that the airflow noise of the centrifugal fan and the outlet of the spray gun is effectively reduced.

Drawings

The drawings of the invention are illustrated as follows:

FIG. 1 is a schematic view of the structure of an air-assisted spray gun of the present invention;

FIG. 2 is a schematic longitudinal sectional view of a three-layer pipe;

FIG. 3 is a schematic longitudinal sectional view of a four-layer pipe;

FIG. 4 is a schematic longitudinal sectional view of a five-layered pipe;

FIG. 5 is a schematic longitudinal sectional view of the attachment end of the spray gun;

fig. 6 is a schematic plan-sectional view of the rotating mechanism.

In the figure; 11. a front cover; 12. a nozzle connection hole; 13. a water inlet; 14. a water supply ring cylinder; 15. an air duct; 16. a spray gun connecting end; 17. an air outlet; 18. an atomizing nozzle; 20. a rotation mechanism; 21. a motor; 22. a gear shaft; 23. a bearing; 24. a bull gear; 26. a cover plate; 27. an induction screw; 28. a spring clamp; 29. a proximity switch; 30. and (4) connecting the pipes.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

in this patent application, for the purpose of clearly describing the components and the positional relationship, terms of orientation such as "upper (top)", "lower", "left", "right", and the like are used, and these terms of orientation are referred to the arrangement positions of the above drawings, and the terms of orientation are changed when the actual installation position is changed, and thus, the scope of protection of the patent is not limited. In the present application, the micropores mean pores having a pore diameter in the range of 0.2 to 1.2 mm.

As shown in fig. 1, 2, 3 and 4, the present invention comprises an air duct 15, wherein the air duct 15 is a multi-layer bent pipe, and the inner pipe layers are uniformly provided with micropores; the top of the inner layer pipe of the air duct 15 is provided with an air outlet 17, the circumference of the pipe orifice of the air outlet 17 is uniformly provided with sawteeth, and the outer layer of the air outlet 17 is sleeved with a water supply ring tube 14; the top cover of the water supply ring cylinder 14 is a front cover 11, the side wall of the water supply ring cylinder 14 is provided with a water inlet 13 connected with a hose, and the front cover 11 is provided with an atomizing nozzle 19; the lower end of the air duct 15 is a spray gun connecting end 16.

As shown in fig. 2, the air duct 15 is a three-layer duct, the inner layer duct and the middle layer duct are both uniformly distributed with micropores, and the outer layer duct is a non-porous duct.

As shown in fig. 3, the air duct 15 is a four-layer duct, the inner and middle two-layer ducts are uniformly distributed with micropores, and the outer duct is a non-porous duct.

As shown in fig. 4, the air duct 15 is a five-layer duct, the inner layer duct and the middle three-layer duct are uniformly distributed with micropores, and the outer layer duct is a non-porous duct.

The lower end of the invention is communicated with the air outlet of the centrifugal fan, the centrifugal fan has larger noise, the air duct 15 is a multilayer bent pipe, and all the pipe layers inside are uniformly provided with micropores. According to the literature, "design theory and application research [ J ] of sound absorbers with double-layer series-connected microperforated panels," Koelreuteria paniculata, Spirodela polyrhiza, and Leihou macros, mechanical science and technology, 2008 (11): 1345-1350 ", the silencing principle of microperforated panels is described. When the noise of the high-pressure high-speed centrifugal fan is transmitted to the elbow of the air duct 15, the longitudinal sound wave of the airflow and the micropores on the inner-layer pipe at the elbow are vertical to each other and are transmitted into the interlayer of the elbow, the noise reduction effect is optimal, and the micropores on the inner-layer pipe can eliminate most of the axially transmitted noise to form a noise reduction elbow; the sawteeth are uniformly distributed on the circumference of the pipe orifice of the air outlet 17, so that the noise of the air outlet of the air duct is further reduced, and the airflow noise is effectively reduced.

As shown in fig. 1, 2, 3 and 4, the inner tube where the air outlet 17 is located has a protruding portion based on the front cover 11 of the water supply cylinder, and the protruding portion of the air outlet can reduce the vortex and noise generated when the high-speed air flow flushes from the nozzle. The front cover 11 of the water supply ring cylinder is provided with a nozzle mounting seat 12, the upper end of the nozzle mounting seat 12 is provided with a one-way valve 18, the one-way valve is provided with an atomizing nozzle 19, and the one-way valve 18 is used for preventing dripping when the pump is stopped.

The one-way valve 18 is arranged at the upper end of the nozzle mounting seat 12, the atomizing nozzle 19 is arranged on the one-way valve, pressurized water entering from the water inlet 13 is sprayed into water mist by the atomizing nozzle 19, the direction of high-speed airflow of the air outlet 17 is consistent with the direction of the sprayed water mist, two energy superposition of wind energy and sprayed water energy is formed, the obstruction of the water mist to air outlet airflow is overcome, the blowing distance of the water mist is increased, or the power of the fan is correspondingly reduced. The bending angle of the air duct 15 is 100-160 degrees.

As shown in fig. 5, the spray gun connection end 16 has a downward main connection port and a parallel auxiliary connection port, and an opening is left between the auxiliary connection port and the side wall of the main connection port. The lance attachment end 16 is used to interface the connection tube 30 and mount the rotation mechanism 20.

As shown in fig. 2, 3 and 4, the duct walls of the outer layer duct and the middle layer duct of the air duct 15 above the secondary interface are directly cut with a notch, the notch is sealed by a steel plate, and the notch is used for avoiding being abutted against the motor rain cover.

As shown in fig. 2, 3 and 4, the present invention further includes a rotating mechanism 20 and a connection pipe 30; the lower section of the connecting pipe 30 is a reducer pipe which is gradually reduced and closed along the pipe diameter in the air flow direction, the upper section of the connecting pipe 30 is a straight pipe, the lower bottom end of the connecting pipe 30 is a connecting flange, the straight pipe at the upper section of the connecting pipe 30 is inserted into the main interface of the spray gun connecting end 16, and the auxiliary interface of the spray gun connecting end 16 is assembled with the rotating mechanism 20.

Because the lower section of the connecting pipe 30 is gradually reduced in pipe diameter along the airflow direction and closed, the moving airflow can be secondarily accelerated, the airflow speed entering the air duct 15 is improved, the defect that the air speed is reduced due to the gradually expanded air duct of the existing spraying device is overcome, and the power of a fan can be reduced when spraying is carried out at equal distance; while the connection pipe 30 serves as a fixed axis for the gun rotation of the air duct 15. Because the rotating mechanism 20 is arranged at the joint of the connecting pipe 30 and the connecting end 16 of the spray gun, the wind barrel 15 can be controlled to rotate, the problem that the atomization direction of the existing spraying device is fixed or the atomization direction is manually changed is solved, the back-and-forth swing can be realized, and the coverage range of water mist is enlarged.

As shown in fig. 2, 3, 4 and 6, the rotating mechanism 20 includes a motor 21, a gear shaft 22, a bearing 23 and a gearwheel 24, an inner ring of the bearing 23 is fixedly sleeved on a straight pipe of the connecting pipe 30, an outer ring of the bearing 23 is embedded in an inner wall of a main interface of the spray gun connecting end 16, the gearwheel 24 is fixed on the straight pipe of the connecting pipe between the upper and lower bearings 23, the spray gun connecting end 16 has a main interface and an auxiliary interface, the gear shaft 22 is installed in the auxiliary interface of the spray gun connecting end 16, a gearwheel on the gear shaft 22 is engaged with the gearwheel 24 at an opening of a side wall of the main interface and the auxiliary interface, and the gear shaft 22 is connected.

The cover plate 26 is fixed on the bottom port of the spray gun connecting end 16 through a fastening screw, the cover plate 26 plays a role in axially positioning the lower bearing 23, a screw 27 enabling the proximity switch to sense the rotation position of the spray gun is installed on the lower bottom surface of the cover plate 26, two spring clamps 28 are fixed on the outer wall of the connecting pipe 30, a proximity switch 29 is fixed on each spring clamp 28, and the two proximity switches 29 are circumferentially distributed on the connecting pipe 30 to form a certain angle. The sensing screw 27 and the two proximity switches 29 form a limit mechanism.

The working process of the rotating mechanism is as follows: the motor 21 fixed on the air duct 15 drives the gear shaft 22, and is meshed with the large gear 24 through the gear on the gear shaft 22 (because the large gear 24 is fixed on the connecting pipe 30 and is equivalent to a sun gear), the gear shaft 22 rotates forward (reversely) under the driving of the motor 21 (the gear on the gear shaft 22 is equivalent to a planet gear), and the air duct 15 fixed with the motor 21 rotates clockwise or anticlockwise around the fixed shaft connecting pipe 30; the limit mechanism is composed of the induction screw 27 and the proximity switches 29, the two proximity switches 29 are arranged at a certain angle along the circumferential direction of the connecting pipe 30, when the induction screw 27 moves to one of the proximity switches 29, the motor 21 rotates reversely, the air duct 15 also rotates reversely, and then the air duct 15 rotates back and forth between the two proximity switches 29.

When the proximity switch 29 detects an induction screw 27, a signal is transmitted to the PLC control circuit, the forward (reverse) steering switch is turned on, the motor rotates forward (reverse), and the air duct 15 also rotates reversely. Similarly, when the induction screw 27 rotates to the position of the other opposite proximity switch 29 along with the air duct 15, the signal is transmitted to the PLC circuit again, the reverse (positive) switch is turned on, the motor rotates reversely (positive), the air duct 15 rotates reversely again, the air duct 15 performs reciprocating rotation movement within the angle of distribution of the two proximity switches 29, and the motor 21 is a micro motor.

A plurality of nozzle mounting seats 12 are circumferentially arranged on a front cover 11 of the pressure equalizing water supply ring cylinder 14, a one-way valve 18 is mounted on each nozzle mounting seat, an atomizing nozzle 19 is mounted on each one-way valve 18, and high-pressure water pressurized by a pressurizing pump enters the pressure equalizing water supply cylinder 14 from a water inlet 13 through a hose and then is sprayed and atomized at high speed by the atomizing nozzle 19. The high-speed airflow power of the air outlet 17 conveys atomized water to a longer distance, so that large-range atomization can be realized.

Claims

1. The utility model provides a wind of making an uproar send spray gun for pressing down dirt removes haze, characterized by: the air duct comprises an air duct (15), wherein the air duct (15) is a multi-layer bent pipe, micropores are uniformly distributed on each pipe layer in the air duct, and an air outlet (17) is formed in the top of an inner pipe of the air duct (15); sawteeth are uniformly distributed on the circumference of the pipe orifice of the air outlet (17), and a water supply ring cylinder (14) is sleeved on the outer layer of the air outlet (17); the top cover of the water supply ring cylinder (14) is a front cover (11), the side wall of the water supply ring cylinder (14) is provided with a water inlet (13) connected with a hose, and the front cover (11) is provided with an atomizing nozzle (19); the lower end of the air duct (15) is provided with a spray gun connecting end (16).

2. The air blowing lance for suppressing dust and removing haze as claimed in claim 1, wherein: the air duct (15) is a three-layer pipe, and micropores are uniformly distributed in the inner-layer pipe and the middle-layer pipe.

3. The air blowing lance for suppressing dust and removing haze as claimed in claim 1, wherein: the air duct (15) is a four-layer pipe, and micropores are uniformly distributed in the inner-layer pipe and the middle two-layer pipe.

4. The air blowing lance for suppressing dust and removing haze as claimed in claim 1, wherein: the air duct (15) is a five-layer pipe, and micropores are uniformly distributed in the inner-layer pipe and the middle three-layer pipe.

5. A noise reduction air blowing spray gun for suppressing dust and removing haze according to claim 1, 2, 3 or 4, which is characterized in that: the inner-layer pipe where the air outlet (17) is located is provided with a protruding part based on a front cover (11) of the water supply ring barrel, a nozzle mounting seat (12) is arranged on the front cover (11), a one-way valve (18) is arranged at the upper end of the nozzle mounting seat (12), and an atomizing nozzle (19) is arranged on the one-way valve.

6. The air blowing lance for suppressing dust and removing haze as claimed in claim 5, wherein: the spray gun connecting end (16) is provided with a downward main interface and auxiliary interfaces which are arranged in parallel, and an opening is reserved between the auxiliary interfaces and the side wall of the main interface.

7. The air blowing lance for suppressing dust and removing haze as claimed in claim 6, wherein: the air duct (15) is positioned above the auxiliary connector, the pipe walls of the outer layer pipe and the middle layer pipe are directly cut with a notch, and the notch is sealed by a steel plate.

8. The air blowing lance for suppressing dust and removing haze as claimed in claim 7, wherein: the device also comprises a rotating mechanism (20) and a connecting pipe (30); the lower section of the connecting pipe (30) is a reducer pipe which is gradually reduced and closed along the pipe diameter in the air flow direction, the upper section of the connecting pipe (30) is a straight pipe, the lower end of the connecting pipe (30) is a connecting flange, the straight pipe at the upper section of the connecting pipe (30) is inserted into a main interface of the spray gun connecting end (16), and the auxiliary interface of the spray gun connecting end (16) 1 is assembled with the rotating mechanism (20).

9. The air blowing lance for suppressing dust and removing haze as claimed in claim 8, wherein: the rotary mechanism (20) comprises a motor (21), a gear shaft (22), a bearing (23) and a large gear (24), wherein the inner ring of the bearing (23) is fixedly sleeved on a straight pipe of a connecting pipe (30), the outer ring of the bearing (23) is embedded into the inner wall of a main interface of the spray gun connecting end (16), the large gear (24) is fixed on the straight pipe of the connecting pipe between the upper bearing (23) and the lower bearing (23), the gear shaft (22) is arranged in an auxiliary interface of the spray gun connecting end (16), gears on the gear shaft (22) are kept meshed with the large gear (24) at openings of the side walls of the main interface and the auxiliary interface, and the gear shaft (22) is connected with the.

10. The air blowing lance for suppressing dust and removing haze as claimed in claim 9, wherein: a cover plate (26) is arranged at the bottom port of the spray gun connecting end (16); a bolt 27 used for enabling a proximity switch to sense the rotation position of the spray gun is installed on the lower bottom surface of the cover plate (26), two spring clamps (28) are fixed on the outer wall of the connecting pipe (30), a proximity switch (29) is fixed on each spring clamp (28), and the two proximity switches (29) are distributed on the connecting pipe (30) at a certain angle along the circumferential direction.