RU2536395C1 - Tobacco raw material treatment device - Google Patents

Abstract

FIELD: tobacco industry.

SUBSTANCE: invention relates to a tobacco raw material treatment device that contains: a cylinder containing a tobacco raw material, a sprayer means through which fog is sprayed that precipitates onto the tobacco raw material and a pair of moving plates provided for in proximity to the spraying means, such plates protruding in front of the spraying means for the reduction of the spraying means spraying area and being retracted away from the spraying means front side for an increase of the spraying means spraying area.

EFFECT: device improvement.

7 cl, 13 dwg

Description

Technical field

An embodiment of the present invention relates to a device for processing tobacco raw materials containing means for spraying fog.

State of the art

In the process of tobacco production, a device is used to process rotary cylindrical type tobacco raw materials, for example, to correct the deficiencies of tobacco leaves and other tobacco materials, increase the flexibility of the raw materials, enhance flavor, improve physical properties, and also mix the processed materials. A device for processing tobacco raw materials of this type contains, for example: a bed; a rotatable cylinder mounted on a bed with the possibility of rotation; a spray nozzle protruding into the rotatable cylinder; a tape containing many holes having various sizes; and a shaft moving the tape with sliding relative to the nozzle surface of the spray nozzle.

In this tobacco processing device, steam and flavor are sprayed using a spray nozzle so that the steam and flavor pass through the openings in the belt, the opening area of the spray nozzle being adjusted according to the amount of spray composition to maintain the injection rate. Thus, if it is necessary to change the amount of the sprayed composition during operation of the device, the device is temporarily suspended to move the tape, and thus the size of the hole is changed. Then, after restarting the device, the amount of spray composition is changed to maintain a predetermined injection rate (see, for example, Patent Document 1).

Literary sources relating to analogues and prototype

Patent Literature

Patent Literature 1: KOKAI Japanese Patent Application No. 2-62226 (KOKAI - Japanese Unexamined Patent Application - Note translation.)

SUMMARY OF THE INVENTION

Technical problems

However, in a conventional device for processing tobacco raw materials, to change the amount of sprayed composition, the device must be temporarily suspended, as described above, due to which production efficiency is reduced.

The aim of the present invention is to provide a device for processing tobacco raw materials with increased production efficiency.

Solution

A device for processing tobacco raw materials contains: a cylinder containing tobacco raw materials; a spray agent through which fog is deposited onto the tobacco raw materials; and a pair of movable plates provided near the spraying means protruding in front of the spraying means to reduce the opening area of the spraying means and diverted from the front side of the spraying means to increase the opening area of the spraying means.

Brief Description of the Drawings

Figure 1 is a side view (with partial tears) of a device for processing tobacco raw materials according to the first embodiment.

Figure 2 is a sectional view, on an enlarged scale, of the movable mechanism of the device for processing tobacco raw materials in Figure 1.

Figure 3 is a perspective view of the movable mechanism of the device for processing tobacco raw materials in Figure 2.

FIG. 4 is a perspective view of a first movable plate and a second movable plate, turned upward, of the movable mechanism shown in FIG. 3, of a device for processing tobacco raw materials.

FIG. 5 is a perspective view of a first movable plate and a second movable plate, turned downward, of the movable mechanism shown in FIG. 3 of a device for processing tobacco raw materials.

FIG. 6 is a perspective view of a first movable plate and a second movable plate, rotated in a direction in which the opening area of the spraying means of FIG. 3 is reduced, a device for processing tobacco raw materials.

7 is a sectional view of a first movable plate and a second movable plate of a movable mechanism according to an embodiment of a device for processing tobacco raw materials.

FIG. 8 is a cross-sectional view of a first movable plate and a second movable plate of the movable mechanism of FIG. 7 moved to a first position.

9 is a diagram showing the results of an experiment conducted according to a first parameter when using a device for processing tobacco raw materials according to the first embodiment.

Figure 10 is a diagram showing the results of an experiment conducted according to a second parameter when using a device for processing tobacco raw materials according to the first embodiment.

11 is a diagram showing the results of an experiment conducted according to a third parameter when using a device for processing tobacco raw materials according to the first embodiment.

12 is a diagram showing the results of an experiment conducted according to a fourth parameter when using a device for processing tobacco raw materials according to the first embodiment.

Fig. 13 is a diagram showing the results of an experiment conducted according to a fifth parameter when using a tobacco processing apparatus according to a first embodiment.

Description of Embodiments

A first embodiment of a device for processing tobacco raw materials is described with reference to FIGS. In this embodiment, an example is described in which the present invention is applied to an adjustable rotary cylinder machine for processing tobacco raw materials, configured to control the moisture content of tobacco raw materials (tobacco leaves).

As shown in figures 1 and 2, the device 11 for processing tobacco raw materials contains: a frame 12; a cylinder 13 mounted on the frame 12 for rotation; raw tobacco 14 contained in cylinder 13; supports 15 and a side wall 16, on which the cylinder 13 is supported for rotation; a protrusion 17 protruding in the form of a flange from the outer peripheral surface of the cylinder 13; a drive mechanism 18 associated with a protrusion 17, leading to the rotation of the cylinder 13; an inlet 21 in the upper part of the side wall 16 for supplying tobacco raw materials 14 to the cylinder 13; spraying means 22 provided near the bottom of the side wall 16 for spraying a mist 19 (spray liquid), for example, vapor deposited on tobacco raw materials 14 in a cylinder 13; a movable mechanism 23 provided between the side wall 16 and the spray means 22 and for adjusting the opening area of the spray means 22; a power source 24 for supplying steam or the like. into a spraying means 22; a valve 25 located between the power source 24 and the spray means 22; an unloading section 26 (belt conveyor), onto which the tobacco raw materials 14, processed in the cylinder 13, are unloaded from the inner space of the cylinder 13; a sensor located near the discharge area 26; a controller for controlling the entire operation of the tobacco processing device 11; and a drainage mechanism for sucking and removing droplets adhering to the first movable plate 31 and the second movable plate 32, described later, of the movable mechanism 23. In this description, the term "fog" means, for example, a very large number of tiny drops suspended in gas, for example, in air, i.e. smoke-like object.

The cylinder 13 contains on its inner peripheral surface a plurality of pegs protruding to its central part, and the tobacco raw materials 14 in the cylinder 13 can be mixed using these pegs. The side wall 16 has, for example, the shape of a disk inserted into the end of the cylinder 13 and attached to the support 15. The spraying means 22 is connected to the lower part of the side wall 16 by means of a movable mechanism 23. The spraying means 22 and the movable mechanism 23 are located outside the cylinder 13.

In this embodiment, the sensor 27 is, for example, a thermocouple, and with its help it is possible to determine the state, for example, temperature, of the tobacco raw material 14 discharged to the discharge section 26. The type of sensor 27 is not limited to the type indicated above, and other types can be used sensors, for example, an infrared temperature sensor. The moisture content can be directly determined using a sensor, such as a moisture meter. In this embodiment, although the sensor 27 is located near the discharge area 26, the location of the sensor 27 is not limited to the indicated position, and the sensor 27 can, for example, be installed in the cylinder 13 or in the pipe for supplying tobacco raw materials.

The controller 28 is, for example, a computer. The controller 28 includes: a part 28A for controlling the movable plates, by which the position of the first and second movable plates 31 and 32 is controlled and the opening area of the spraying means 22 is controlled; and part 28B for opening and closing the valve, regulating the degree of opening of the valve 25 to control the amount of generated fog (steam). Part 28A for controlling the movable plates and part 28B for opening and closing the valve are represented, for example, by the software installed in the controller 28.

As shown in FIG. 2, the movable mechanism 23 comprises: a square tube 33 located between the cylinder 13 and the spray means 22; the first movable plate 31 and the second movable plate 32, mounted rotatably in the pipe 33 near the spray means 22; a first pivot shaft 34 to which a first movable plate 31 is attached; a second rotary shaft 35 to which a second movable plate 32 is attached; a first guide lever 36 attached to the first rotary shaft 34 and at the same time pivotable together with the first movable plate 31; a second guide lever 37, attached to the second rotary shaft 35 and at the same time rotated together with the second movable plate 32; and an opening angle adjusting portion 38 comprising a pair of elongated holes 39 mating with a finger 36A of the first guide lever 36 and a finger 37A of the second guide lever 37 for adjusting the opening angle between the first movable plate 31 and the second movable plate 32; a first motor 41 for rotating the first rotary shaft 34; a second motor 42 for rotating the second rotary shaft 35; and a third motor 43 for driving a part 38 for adjusting the opening angle.

The first movable plate 31 and the second movable plate 32 are formed by folding one plate in the central part to form a V-shape. The first movable plate 31 comprises one end 31A supported by the first pivot shaft 34 and the other end 31B opposite the end 31A. Similarly, the second movable plate 32 comprises one end 32A supported by the second rotary shaft 35 and the other end 32B opposite the end 32A. The first movable plate 31 is attached to the first rotary shaft 34 by means of fastening means 44, for example, by means of a bolt and nut. The second movable plate 32 is attached to the second rotary shaft 35 by means of fastening means 44, for example, by means of a bolt and nut.

Motors 41, 42, and 43 are, for example, servomotors, and each rotation angle is controlled by part 28A of controller 28 to control the movable plates through a servo amplifier. The driving force of the third engine 43 is transmitted to the opening angle adjusting part 38 through the gear 45 and the gear rack 46 formed on one side of the opening angle adjusting part 38, whereby the opening angle adjusting part 38 can be substantially linearly moved in the vertical direction. Although the servomotor is used as the drive device used to move the first movable plate 31, the second movable plate 32, and the opening angle adjusting portion 38, the drive device is not limited to the servomotor, and another type of drive, such as a solenoid, can be used. Gear 45 and gear rack 46 are not shown in FIGS. 3-6.

In this embodiment, since a rectangular nozzle 33 is used, the gap between the nozzle 33 and the pair of movable plates 31 and 32 is small compared with the case of using a cylindrical nozzle, as a result of which the amount of mist generated through the gaps is small. Thus, the reactivity with increasing and decreasing the fog injection rate is good, and by changing the position of the first movable plate 31 and the second movable plate 32, the opening area of the spraying means 22 is controlled so that the fog injection speed can be easily controlled (namely, the injection speed can be keep constant).

Below is described, with reference to Figs. 1 and 3-6, a method for processing tobacco raw materials (a method for controlling the moisture content of tobacco raw materials) using the device 11 for processing tobacco raw materials according to the present embodiment.

First, the tobacco stock 14 is supplied to the cylinder 13 through the inlet 21 shown in FIG. 1. The tobacco raw material 14 supplied to the cylinder 13 is mixed in the cylinder 13 by rotating the cylinder 13. Then, in the cylinder 13, steam is sprayed through the spraying means 22 in the form of a mist supplied from the power supply 24 through the valve 25. At this time, as shown in FIG. 2 and 3, the first movable plate 31 and the second movable plate 32 in the nozzle 33 are usually located in the second position P2, at which the ends 31B and 32B are withdrawn from the front side of the spray means 22 and are located so that the spray means 22 is opened. When mist is injected into the cylinder 13, the first movable plate 31 and the second movable plate 32 are turned upward (the second movable plate 32 protrudes in front of the spray means 22, and the first movable plate 31 is withdrawn from the front side of the spray means 22) for fixed periods of time, such as 4, and the first movable plate 31 and the second movable plate 32 are turned down (the first movable plate 31 protrudes in front of the spraying means 22, and the second the movable plate 32 is withdrawn from the front side of the spraying means 22), as shown, for example, in FIG. At this time, the first movable plate 31 and the second movable plate 32 are moved in the vertical direction, for example, by the third engine 43, by controlling by the part 28A of the controller 28 to control the movable plates. Through such rotation of the first and second movable plates 31 and 32 for fixed periods of time, the mist (vapor) is uniformly sprayed and it settles on the tobacco raw material 14 in the cylinder 13.

The tobacco raw material 14, the moisture content of which is controlled in the cylinder 13, is discharged to the discharge section 26. The temperature or the moisture content of the tobacco raw material 14 is determined using a sensor 27 located in the discharge section 26. The temperatures detected by the sensor 27 are sent as signals to the controller 28. At this time, for example, if the determined temperature is higher than the predetermined temperature, then the controller 28 determines that the amount of fog (steam) generated is large. Using part 28B of the controller 28 to open and close the valve, then feedback control is performed to reduce the amount of mist (vapor) generated. At the same time, as shown in FIGS. 2 and 6, to reduce the opening area of the spraying means 22, the first movable plate 31 and the second movable plate 32 are rotated by the part 28A of the controller 28 for controlling the movable plates to the first position P1, in which the first movable plate 31 and the second movable plate 32 are inclined relative to the center line 22A of the spray means 22 so that the ends 31B and 32B of the first and second movable plates 31 and 32 are located in front of the spray means 22. Therefore, even when the amount (flow) of fog (steam) is reduced, the injection speed of the fog (steam) is kept constant so that the fog (steam) always reaches a certain distance in the horizontal direction (in the depth direction) of the cylinder 13. Fog (steam) injected through the spray the means 22 provided in the lower part of the side wall 16 is sprayed so that it always reaches a certain height in the direction of the height of the cylinder 13.

Meanwhile, if the temperature of the tobacco raw material 14 discharged to the discharge section 26 is lower than a predetermined value, then the controller 28 determines that the amount of mist (vapor) generated is small. In a manner similar to that described above, using feedback portion 28B of the controller 28 for opening and closing the valve, feedback control is performed to increase the amount of mist (vapor) generated. At the same time, as shown in FIG. 3, with the part 28A of the controller 28 for controlling the movable plates, the first movable plate 31 and the second movable plate 32 are rotated in the direction (to the second position P2), in which the first movable plate 31 and the second the movable plate 32 is diverted from the front side of the spraying means 22 and the opening area of the spraying means 22 is increased. Therefore, the injection speed of the mist (steam) is kept constant.

Below are described, with reference to Fig.9-13, the results of experiments performed using the device 11 for processing tobacco raw materials. Figure 9-13 shows the corresponding experimental results corresponding to the parameters from the first to the fifth. The horizontal axis (X) corresponds to the horizontal distance from the spraying means 22 (i.e., the depth of the cylinder 13). The vertical axis (Y) corresponds to the vertical distance from the spraying means 22 (i.e., the height of the cylinder 13). Thus, the diagrams in FIGS. 9-13 correspond to diagrams showing temperature distributions within the cylinder 13 from the horizontal direction.

According to the first parameter, the flow rate of fog 19, for example, steam injected through the spraying means 22, was 200 kg / h. According to the first parameter, the gap between the other end 31B of the first movable plate 31 and the other end 32B of the second movable plate 32 (hole height) was 80 mm. The results of the experiments are shown in Fig.9. According to the results of the experiments, since the flow rate of fog 19, for example steam, was satisfactorily high, fog 19 satisfactorily reached the far wall (opposite to the spraying means 22 and located to the right in the drawings, Figures 1 and 9) relative to the middle in the depth direction of the cylinder 13.

According to the second parameter, the flow rate of the fog 19, for example, the steam injected through the spraying means 22, was 100 kg / h. According to the second parameter, the gap between the other end 31B of the first movable plate 31 and the other end 32B of the second movable plate 32 (hole height) was 80 mm. The experimental results are shown in FIG. 10. According to the results of experiments, since the flow rate of fog 19, for example, steam, was half in comparison with the first parameter, the flow rate of fog 19 decreased, and most of the fog 19 fell on the middle part in the depth direction of cylinder 13.

According to a third parameter, the flow rate of the fog 19, for example, the steam injected through the spraying means 22, was 100 kg / h. According to a third parameter, the gap between the other end 31B of the first movable plate 31 and the other end 32B of the second movable plate 32 (hole height) was 40 mm. The results of the experiments are shown in Fig.11. According to the experimental results, although the flow rate of fog 19, for example steam, was half compared with the first parameter, the gap between the other end 31B of the first movable plate 31 and the other end 32B of the second movable plate 32 (hole height) was half, and thus fog flow rate 19 was maintained. Therefore, the fog 19 satisfactorily reached the far wall (opposite to the spraying means 22 and located to the right in the drawings, Figures 1 and 11) relative to the middle in the depth direction of the cylinder 13.

According to a fourth parameter, the consumption of fog 19, for example, steam injected through the spraying means 22, was 50 kg / h. According to a fourth parameter, the gap between the other end 31B of the first movable plate 31 and the other end 32B of the second movable plate 32 (hole height) was 80 mm. The results of the experiments are shown in Fig.12. According to the experimental results, since the flow rate of fog 19, for example, steam, was a quarter in comparison with the first parameter, the flow rate of fog 19 decreased and most of the fog 19 fell on the near side (near the spraying means 22 and on the left side in the drawings, 1 and 12) relative to the middle in the depth direction of the cylinder 13.

According to a fifth parameter, the flow rate of the fog 19, for example, the steam injected through the spraying means 22, was 50 kg / h. According to the fifth parameter, the gap between the other end 31B of the first movable plate 31 and the other end 32B of the second movable plate 32 (hole height) was 20 mm. The results of the experiments are shown in Fig.13. According to the experimental results, although the flow rate of fog 19, for example steam, was a quarter compared to the first parameter, the gap between the other end 31B of the first movable plate 31 and the other end 32B of the second movable plate 32 (hole height) was a quarter, and thus fog flow rate 19 was maintained. Therefore, the fog 19 satisfactorily reached the far wall (opposite to the spraying means 22 and located to the right in the drawings, Figures 1 and 13) relative to the middle in the depth direction of the cylinder 13.

According to the present embodiment, the tobacco processing device 11 comprises: a cylinder 13 containing tobacco raw materials 14; spraying means 22 for spraying fog deposited on tobacco raw materials 14; and a pair of movable plates 31 and 32 provided near the spray means 22, protruding in front of the spray means 22 to reduce the opening area of the spray means 22 and diverted from the front side of the spray means 22 to increase the opening area of the spray means 22.

According to the design described above, the opening area of the spraying means 22 can be increased and decreased by actuating a pair of movable plates. Therefore, even with an increase or decrease in the amount of spray mist, the spray speed of the mist can be kept constant by changing the opening area, whereby the state of the spray mist (spray area and spray position) can be kept constant before and after the change in the amount of spray mist. Thus, the mist is satisfactorily applied to the tobacco raw materials 14 in the cylinder 13 so that the quality can be maintained constant. According to the design described above, the opening area of the spraying means 22 can be constantly changed while maintaining the working state of the tobacco processing apparatus 11 without interrupting the operation of the tobacco processing apparatus; thus, the processing efficiency of the tobacco raw materials 14 can be improved, and the opening area of the spraying means 22 can be finely adjusted.

The device 11 for processing tobacco raw materials is equipped with a pair of rotary shafts 34 and 35 located so that the spray means 22 is located between them. The rotary shafts 34 and 35 carry, respectively, the ends 31A and 32A of the movable plates 31 and 32, and the movable plates 31 and 32 can be rotated by the rotary shafts 34 and 35 from the first position P1, in which the movable plates 31 and 32 are inclined relative to the center line 22A of the spraying means 22 so that the ends 31B and 32B, opposite the ends 31A and 32A, are located in front of the spraying means 22, in the second position P2, in which the ends 31B and 32B are withdrawn from the front side of the spraying means 22, and vice versa.

According to the design described above, the direction of injection of the mist can be freely changed along the direction of the movable plate, and the mist can be injected evenly so that it settles on the tobacco stock in the cylinder. Furthermore, according to the above construction, even when the opening area of the spraying means 22 is reduced, the cross-sectional area of the flow path through which the fog passes can be gradually reduced, and thus the fog flow can be smoothed without disturbing or imparting turbulence. Drops adhering to a pair of movable plates 31 and 32, in the direction of the fog, can be minimized.

The spraying means 22 and a pair of movable plates 31 and 32 are located outside the cylinder 13. For example, when an injection nozzle or similar means is installed in the cylinder 13, the tobacco stock 14 may accumulate on the nozzle. During the subsequent unloading of the thus accumulated tobacco raw materials into the unloading area, the quality of the tobacco raw materials 14 after processing is uneven. According to this design, the tobacco raw materials 14 do not accumulate in the spraying means 22 and on the movable plate, and tobacco raw materials 14 having uniform quality can be obtained. With the location of the spraying means 22 and a pair of movable plates outside the cylinder 13, their maintainability increases.

In addition, the device 11 for processing tobacco raw materials is provided with: a discharge section 26, onto which the tobacco raw materials 14 are unloaded from the cylinder 13; a sensor 27 located near the discharge area 26, through which determine the condition of the tobacco raw materials 14; and a controller 28 controlling the pair of movable plates and the opening area of the spraying means 22 based on the signal from the sensor 27. According to this design, feedback control and more precisely maintain the moisture content of the tobacco raw materials 14 through the controller 28. Therefore, the quality of the tobacco raw materials 14 after processing can be further enhanced.

Of a pair of movable blades, the other end of one of the movable blades protrudes in front of the spraying means 22, while at the same time, the other end is diverted from the front side of the spraying means 22, whereby the direction of injection of the mist can be changed along one of the movable blades. According to this design, the mist can be injected into the cylinder 13 in any direction, and the mist can be uniformly applied to the tobacco raw materials 14 in the cylinder 13.

An apparatus for processing tobacco raw materials according to the present invention is not limited to an example of the aforementioned adjustable machine for processing tobacco raw materials, on which the moisture content of the tobacco raw materials is controlled. A device for processing tobacco raw materials according to this invention is naturally applicable, for example, in a device for applying flavoring, through which flavoring is added to tobacco raw materials by spraying flavoring or the like in a cylinder; and in a mixer for mixing various tobacco raw materials with each other and at the same time controlling the moisture content. In a device for applying a flavor, a flavor or the like in the form of a mist 19 (atomized liquid) is sprayed through a spray means 22 and it settles on the tobacco raw material 14.

In the tobacco processing apparatus 11 to which the present invention is applied, the construction of the transport mechanism 23 is not limited to the construction described above. The movable mechanism may, for example, have the structure shown in Figs. 7 and 8.

More specifically, the movable mechanism 23 comprises: a first movable plate 31 and a second movable plate 32 that are slidably mounted near the spray means 22; and a drive, for example, a servo motor slidingly moving the first movable plate 31 and the second movable plate 32. In this embodiment, the first movable plate 31 and the second movable plate 32 are located along a direction intersecting with the direction of the axial line 22A of the spray means 22, and they can be to slide along a direction intersecting with the direction of the axial line 22A. The first movable plate 31 and the second movable plate 32 are driven by the drive so that they protrude in front of the spray means 22, and so that the opening area of the spray means 22 can be reduced (see first position P1 in FIG. 8), or move in the direction (opening direction) in which the first movable plate 31 and the second movable plate 32 are withdrawn from the front side of the spraying means 22 and, thus, the opening area of the spraying means 22 is increased (see second Assumption P2 in Figure 7) and vice versa. As described herein, if the first movable plate 31 and the second movable plate 32 (each) have a shutter-like structure, then the injection speed of the mist (vapor) can be kept somewhat constant. In addition, the construction of the first movable plate 31 and the second movable plate 32 can be simplified.

The present invention can be variously modified and used without departing from the scope of the present invention.

The list of items indicated in the drawings

11 - Device for processing tobacco raw materials

13 - cylinder

14 - Raw Tobacco

19 - Fog

22 - Spray agent

23 - Moveable mechanism

26 - Landing area

27 - Sensor

28 - Controller

31 - The first movable plate

32 - The second movable plate

Claims (7)

1. A device for processing tobacco raw materials, containing:
- cylinder containing tobacco raw materials;
- a spray agent through which fog is deposited onto the tobacco raw materials; and
- a pair of movable plates provided near the spraying means protruding in front of the spraying means to reduce the opening area of the spraying means and diverted from the front side of the spraying means to increase the opening area of the spraying means. 2. The device according to claim 1, additionally containing a pair of rotary shafts arranged so that the spray means is located between them, each of the rotary shafts carrying one end of the movable plate; wherein each of the movable plates can be rotated by means of a rotary shaft from a first position in which each of the movable plates is inclined relative to the center line of the spray means so that the other end opposite the first end is located in front of the spray means, in a second position in which the other end diverted from the front of the spraying means. 3. The device according to claim 2, in which the spraying means, a pair of movable plates and a pair of rotary shafts are located outside the cylinder. 4. The device according to claim 3, further comprising:
- unloading area, on which tobacco raw materials are unloaded from the cylinder;
- a sensor located near the unloading area and determining the state of tobacco raw materials; and
- a controller that controls the pair of movable plates and the opening area of the spray means based on the signal from the sensor. 5. The device according to claim 4, in which a pair of movable plates provides regulation of the disclosure area to maintain a constant initial velocity of the fog passing between the movable plates. 6. The device according to claim 5, in which, in a pair of movable protruding plates, the other end of one of the movable plates protrudes in front of the spraying means, and at the same time, the other end of the other movable plates extends from the front side of the spraying means, while the direction of injection of fog can be changed for direction along one of the movable plates. 7. The device according to claim 1, in which a pair of movable plates is located on both sides holding the spraying means between them, and these plates are able to slide along a direction intersecting with the axis of the spraying means.

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