JPH061311U - Automatic spray nozzle control device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an automatic spraying control device capable of reducing the labor required for spraying work, eliminating unevenness of spraying due to the influence of wind, and uniformly spraying. [Structure] The spray position setting device 10 sets spray data in a windless state, and the wind direction anemometer 7 detects the wind direction β and the wind speed α and outputs them to the arithmetic unit 9. Further, the spraying nozzle 3 outputs the current spraying nozzle turning angle γ ₂ and the prime mover 4 outputs the current prime mover rotation speed N ₂ to the arithmetic unit 9. Based on the input data, the arithmetic unit 9 considers the influence of wind and the engine speed N and the spray nozzle turning angle γ.
Is calculated, and the result is output to the prime mover rotation speed command unit 11 and the spray nozzle rotation operation command unit 12. Motor speed command section
Reference numeral 11 outputs the input signal to the prime mover 4 to control the rotation speed of the prime mover 4. Further, the spray nozzle swivel operation command unit 12 outputs the input signal to the swirl device 8 to perform the swirl operation of the spray nozzle 3 and control the angle thereof.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic spraying nozzle control device for spraying water, coating liquid, or the like onto the surface of a pile of raw materials such as coal and ore.

[0002]

[Prior art]

 Ore, coal, etc. used as blast furnace raw materials are usually stored in piles or powders in piles in the raw material yard. In this raw material yard, the surface of the pile of raw material is dried by the wind, and the fine powder accumulated on the surface is scattered, which is a source of dust pollution.

As a measure for preventing this dust pollution, water or a coating liquid is sprayed on the surface of the pile, thereby preventing the scattering of fine powder on the surface. The applicant has applied for a special vehicle (hereinafter referred to as “spraying vehicle”) for performing this spraying (Publication No. 2-33248 of the utility model), and this spraying vehicle is equipped with a spraying nozzle, which is manually operated by an operator. This is a spray nozzle device that sprays spray liquid such as water or coating liquid. The operator visually checks the trajectory and spray position of this spray until it reaches the pile, and sprays it evenly on the pile surface. The position where the spray liquid arrives may shift during spraying due to the effect of the wind, but the spray nozzle angle was adjusted according to the experience and feeling of the spray operator, and uniform spraying was performed without uneven spraying.

[0004]

[Problems to be solved by the device]

 Two operators, one sprayer driver and one spray nozzle operator, are required for this work. In order to reduce the number of workers and the labor required, it is possible to operate the spray nozzles automatically, but the spray liquid is affected by the wind during spraying, so the spray liquid does not reach the target position and spray unevenness occurs. There was a problem that it would occur.

The present invention has been made in view of the above circumstances, and reduces the labor required for the spraying work by automatically operating the spraying nozzle, and makes it possible to uniformly spray without the unevenness of spraying due to the influence of wind. An object is to provide an automatic spraying control device.

[0006]

[Means for Solving the Problems]

 The automatic spray nozzle control device according to the present invention detects a wind direction and a wind speed in a spray nozzle device that sprays spray liquid at a predetermined spray speed from a spray nozzle rotatable at a predetermined angle and sprays the spray liquid to a target position. The wind direction anemometer, the detected value of the wind direction anemometer, and the spray angle of the spray nozzle and spraying speed of the spray liquid necessary for spraying to the target position in the no-wind state are input to the target position. An arithmetic unit for obtaining the angle of the spray nozzle and the spray velocity of the spray liquid is provided, and the angle of the spray nozzle and the jet speed are configured to be controlled according to the calculation result of the arithmetic unit.

[0007]

[Action]

 With the automatic spray nozzle control device of the present invention, the spray nozzle swivel angle for setting the spray nozzle swirl angle and spray speed of the spray liquid in a windless state, and detecting the wind direction and speed, the spray nozzle swirl angle for reaching the spray liquid to the target position. And calculate the spray velocity of the spray liquid. As a result, it is possible to control the swirling angle of the spray nozzle and the spraying speed of the spray liquid, and to spray at the target position in consideration of the influence of wind.

[0008]

【Example】

 Hereinafter, the present invention will be specifically described with reference to the drawings showing an embodiment thereof. 1 and 2 are a side view and a plan view of a spraying vehicle according to the present invention. In the figure, 1 is a tank for storing the spray liquid, a pump 2 for pumping the spray liquid stored therein, a prime mover 4 for activating the spray liquid, a spray liquid for pumping the spray liquid pumped by the pump 2, and a method of injecting a cylinder tip A spray nozzle 3 which can swivel in the direction is installed in the vehicle.

An anemometer 7 for detecting wind direction and wind speed is installed on the tank 1. Further, the prime mover 4 can change the number of revolutions, and thereby changes the spray speed of the spray liquid from the spray nozzle 3. The prime mover 4 has a built-in rotation speed detector 5 for detecting the rotation speed. Then, the spray nozzle 3 is rotated 360 ° in the horizontal plane by the turning device 8 (A in FIG. 2), and its position is detected by the turning position detector 6.

FIG. 3 is a block diagram showing a control system according to the present invention. The spray position setting device 10 sets spray data in a windless state, and outputs each data to the arithmetic unit 9. The spraying data in the windless state is the spraying distance X ₁ to the target position in the windless state, the spraying nozzle swivel angle γ ₁ for spraying to the target spraying position in the windless state, and the spraying liquid in the windless state to the target position. Is the spraying liquid jetting speed, that is, the rotation speed N ₁ of the prime mover 4.

Further, the wind direction anemometer 7 detects the wind direction β and the wind speed α and outputs the result to the arithmetic unit 9. Further, the spraying nozzle 3 outputs the current spraying nozzle turning angle γ ₂ and the rotation speed detector 5 outputs the current prime mover rotation speed N ₂ to the arithmetic unit 9. Based on these input data, the arithmetic unit 9 calculates the prime mover rotation speed N and the spraying nozzle swivel angle γ considering the influence of the wind, and the results are used to calculate the prime mover rotation speed command unit 11 and the spray nozzle swivel. Output to the operation command unit 12. The prime mover speed command unit 11 outputs the input signal to the prime mover 4 to control the speed of the prime mover 4. The spray nozzle swivel operation command unit 12 outputs the input signal to the swirl device 8 to swirl the spray nozzle 3 and control the angle thereof.

FIG. 4 is a flowchart showing a procedure for controlling the spraying nozzle turning angle γ, and FIG. 5 is a flowchart showing a procedure for controlling the prime mover rotation speed N. The control of the spraying nozzle 3 of the present invention will be described based on a flowchart.

First, the control of the spray nozzle turning angle γ will be described. As shown in FIG. 4, the spray data in the windless state is set in advance and is input from the spray position setter 10 to the arithmetic unit 9 (step S41). The spraying data in the windless state is the spraying distance X _{1 in} the windless state, the spraying nozzle turning angle γ _{1 in} the windless state, and the engine speed N ₁ in the windless state.

The arithmetic unit 9 reads the wind data from the wind direction and anemometer 7 and the current distribution nozzle rotation angle γ ₂ from the rotation position detector 6 (step S42). The wind data are wind speed α and wind direction β. Here, the wind direction β means the angle of the wind blown around the spray nozzle. Then, the computing device 9 obtains the dispersion deviation distance Y from the target position due to the influence of the wind from the following equation (1) (step S43). Y = K ₁ × α × (X ₁ / V ₁ ) × sin (β−γ) (1) where K ₁ : coefficient of correction of influence of air resistance, etc. V ₁ : spraying speed of spray liquid in no wind The spray deviation distance Y from the target position due to the influence is the distance displaced from the spray target position as a result of spraying when the spray distance from the spray nozzle 3 to the spray target position is X ₁ and the wind of the wind direction β is blowing. , Refers to the distance of spray deviation in the vertical direction from the spray nozzle 3 toward the spray target position.

The spray displacement angle obtained from the spray displacement distance Y is added to the spray nozzle swivel angle γ ₁ in the windless state, and the spray nozzle swivel angle γ is calculated from the following equation (2) (step S44). γ = γ ₁ + tan ^-1 (X ₁ / Y) (2)

The distribution nozzle rotation angle γ thus obtained is compared with the current distribution nozzle rotation angle γ ₂ (step S45). When a difference is recognized, a signal for adjusting the angle of the spray nozzle 3 is given to the prime mover speed command section 11. Then, the prime mover rotation speed command unit 11 gives the given signal to the turning device 8 to control the spraying nozzle turning angle γ (step S46). At this time, if the calculated spray nozzle swivel angle γ> the current spray nozzle swivel angle γ ₂ , clockwise swivel operation is performed. If the calculated spray nozzle swivel angle γ <current spray nozzle swivel angle γ ₂ Performs counterclockwise swivel operation to eliminate the difference between the spray nozzle swivel angle γ and the current spray nozzle swivel angle γ ₂ . When no difference is recognized, a signal for stopping the spray nozzle 3 is given to the prime mover rotation speed command section 11.

Next, the control of the prime mover rotation speed N will be described. As shown in FIG. 5, spray data in a windless state is set in advance, and is input from the spray position setting device 10 to the computing device 9 (step S51). The spraying data in the windless state is the spraying distance X _{1 in} the windless state, the spraying nozzle turning angle γ _{1 in} the windless state, and the engine speed N ₁ in the windless state. Since the spray liquid injection speed V ₁ and the prime mover speed N ₁ have a relationship of N ₁ ∝V ₁ , the spray liquid spray speed V ₁ is controlled by the prime mover speed N ₁ .

The arithmetic unit 9 reads wind data from the anemometer 7 and the current engine speed N ₂ from the engine rotation detector 5 (step S52). The wind data are wind speed α and wind direction β. Then, the computing device 9 obtains the spraying nozzle injection velocity V considering the influence of the wind from the following equation (3) (step S53). V = K ₂ × α × cos (β−γ ₁ ) + V ₁ (3) where K ₂ : correction coefficient

From the spraying nozzle injection speed V, the engine speed N can be obtained. It is calculated from equation (4) below. (Step S54). N = K ₃ × V (4) where K ₃ is a conversion coefficient of the spray nozzle injection speed V to the engine speed N.

The engine speed N thus obtained is compared with the current engine speed N ₂ (step S55). When no difference is recognized, a signal for maintaining the engine speed N ₂ is given to the engine speed command unit 11. If a difference is recognized, a signal for adjusting the rotation speed of the prime mover 4 is given to the prime mover rotation speed command section 11. Then, the prime mover rotation speed command unit 11 gives the given signal to the prime mover 4 to control the prime mover rotation speed N (step S56). At this time, if the calculated prime mover rotation speed N <the current prime mover rotation speed N ₂ , the rotation speed is lowered, and if the prime mover rotation speed N> the current prime mover rotation speed N ₂ is increased.

With such control, in the spraying of the raw material yard by the spraying vehicle of this embodiment to the piles, the spray nozzle swivel angle and the spray liquid jet speed can be automatically determined in consideration of the influence of wind. However, it can be performed with the effort of only moving the vehicle by one driver.

[0022]

[Effect of device]

 As described above, in the automatic spraying nozzle control device of the present invention, the spraying nozzles can be automatically operated, so that the labor required for spraying work can be reduced, and the uneven spraying due to the influence of the wind can be eliminated to achieve uniform spraying. The present invention has an excellent effect.

[Brief description of drawings]

FIG. 1 is a side view of a spreading vehicle according to the present invention.

FIG. 2 is a plan view of a spreading vehicle according to the present invention.

FIG. 3 is a block diagram showing a control system according to the present invention.

FIG. 4 is a flowchart showing a procedure for controlling a spray nozzle turning angle γ.

FIG. 5 is a flowchart showing a procedure for controlling a prime mover rotation speed N.

[Explanation of symbols]

 1 tank 2 pump 3 spray nozzle 4 prime mover 5 rotation speed detector 6 turning position detector 7 wind direction anemometer 8 turning device 9 computing device 10 spraying position setter γ spreading nozzle turning angle N prime mover speed

Claims (1)

[Scope of utility model registration request] 1. A wind direction anemometer for detecting a wind direction and a wind speed in a spray nozzle device for spraying a spray liquid at a predetermined spray speed from a spray nozzle rotatable at a predetermined angle and spraying the spray liquid to a target position. Based on the detected value of the wind anemometer and the angle of the spray nozzle and spray speed of spray liquid required for spraying to the target position in the windless state, which are input in advance, the angle of the spray nozzle and the spray liquid sprayed to the target position An automatic spraying nozzle control device, comprising: an arithmetic unit for obtaining an injection speed; and a control unit configured to control an angle of the spray nozzle and the injection speed according to a calculation result of the arithmetic unit.