JP2003205997A - Slide valve device and method for spraying liquid on valve body thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide valve device which can increase a life-span of packing, can maintain high sealing performance over a long period of time, and makes the inside of a valve-body recovery part hardly polluted with reserves. <P>SOLUTION: This slide valve device has: the valve body 14 which opens/closes an opening by advancing/retreating from a direction of crossing the opening; and a driver for advancing/retreating the valve body 14. Constitutionally, the slide valve device is provided with a liquid spraying means for spraying the liquid on a surface of the valve body 14, and a liquid recovering means for recovering the sprayed liquid. Additionally, the slide valve device can also be provided with a valve for supplying the liquid by means of the liquid spraying means or stopping the supply of the liquid, along with the advance/ retreat of the valve body 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide valve device which opens and closes the opening by moving the valve body forward and backward from a direction traversing the opening, and a method for spraying liquid onto the valve body in the slide valve device. .

[0002]

2. Description of the Related Art In plants and various processing facilities,
A slide valve device is often used at the discharge port to discharge the stored material in the tank. This slide valve device is provided at an opening (discharging port) for discharging stored items formed in a lower part or a side part of a tank, and by sliding the valve element in a direction crossing the opening, the opening part is opened. To open and close. FIG. 5 is a perspective view illustrating the configuration of a slide valve device that is generally used in plants, various processing facilities, etc., and FIG. 6 is a partially enlarged cross-sectional view in the II direction of FIG.

The slide valve device 10 has a plate-shaped valve body 14 which moves back and forth in a direction traversing the opening Ta of the tank T.
And a valve body housing portion 11 for housing the valve body 14, and a cylinder (air cylinder) 15 attached to one side of the valve body housing portion 11. The tip of the piston rod 15a of the cylinder 15 that can move back and forth is connected to the valve body 14, and the piston rod 15a moves forward and backward when the cylinder 15 is driven, and the valve body 14 moves forward and backward in a direction traversing the opening Ta. Then, the opening Ta is opened and closed. Note that the valve body storage portion 11 is usually covered with a cover (not shown), and maintenance, inspection, cleaning, etc. can be performed by removing this cover regularly or as needed. .

On the other side of the valve body storage portion 11, the valve body storage portion 1
The upper support plate 12 is located above the valve body 14 protruding from the valve body 1 and has an opening 12a that is concentric with the opening Ta of the tank T, and below the valve body 14 protruding from the valve body housing 11. However, the opening 13 is concentric with the opening Ta of the tank T.
The lower support plate 13 having a formed therein is attached. The upper support plate 12 is connected to the lower end of the tank T with the opening 12 a aligned with the opening Ta of the tank T.
The lower support plate 13 is connected to an upper portion of a hopper (not shown) that receives a stored item discharged from the tank T through the opening Ta.

Further, two proximity switches 15b and 15c are attached to the front and rear of the cylinder 15,
The position of the piston in the cylinder 15 is detected. When the piston advances and the valve body 14 closes the opening Ta, the proximity switch 15b detects the piston and the valve body 14 opens the opening Ta.
Outputs a signal that is closed. On the contrary, when the piston retracts and the opening Ta is opened,
The proximity switch 15c detects the piston and outputs a signal that the opening Ta is opened.

A packing is provided between the valve body 14 and the upper support member 12 to seal the stored material so as not to leak out from the gap between the valve body 14 and the upper support member 12.
As shown in FIG. 6, on the lower surface of the upper support plate 12, two annular holding members 12b and 12c having different diameters are concentrically attached to the opening 12a.
An annular packing 16 is held between 2b and 12c. The packing 16 has an opening T formed by the valve body 14.
When a is closed, it contacts the peripheral portion of the valve body 14 to seal the gap between the valve body 14 and the upper support member 12, and is usually formed of an elastic body such as rubber or resin. ing.

The conventional slide valve device described above has the following problems. That is, since the valve element 14 and the packing 16 contact each time the valve 16 is opened and closed, the packing 16 is worn and the sealing performance is deteriorated at an early stage. Also, the valve body 1
The above-mentioned stored material remaining on 4 is dried, becomes powdery or solid and promotes wear and damage of the packing 16, and shortens the life of the packing 16. Therefore, there is a problem that the packing 16 must be frequently replaced by stopping the operation of the equipment. Further, since the stored material remaining on the packing 16 and the valve body 14 moves to the valve body housing portion 11 together with the valve body 14, there is a problem that the stored material easily contaminates the inside of the valve body housing portion 11. It was

[0008]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and can improve the life of the packing and can maintain high sealing performance for a long period of time. (EN) Provided are a slide valve device in which the inside of a body recovery part is unlikely to be contaminated with stored materials, and an existing device can be used as it is with a simple modification, and a liquid spraying method to a valve body in this slide valve device. With the goal.

[0009]

In order to achieve the above object, a slide valve device according to a first aspect of the present invention is a slide valve device which moves back and forth in a direction traversing an opening to open and close the opening. In the on-off valve device having a drive body for moving the valve body forward and backward, a liquid spraying means for spraying a liquid on the surface of the valve body and a liquid recovering means for recovering the sprayed liquid are provided. According to this configuration, the surface of the valve body is moistened by the liquid sprayed on the valve body by the liquid spraying means, the frictional resistance with the packing is reduced, and the life of the packing can be extended, and the packing and the valve body can be extended. By interposing a liquid between the and, it is possible to enhance the hermeticity. Further, the surface of the valve body can be washed with the liquid. The sprayed liquid is recovered by the liquid recovery means, so that the valve body storage section can be kept in a clean state for a long period of time.

The slide valve device according to claim 2 is
A valve is provided for supplying or stopping the liquid by the liquid spraying unit as the valve body moves back and forth. According to this structure, the spraying of the liquid is stopped when it is unnecessary, such as after the valve body is closed, so that the spraying amount of the liquid can be reduced and the cost can be reduced.

As the liquid, the liquid may include a lubricating liquid for lubricating the surface of the valve body, a cleaning liquid for cleaning the surface of the valve body, and the valve body. Neutralizing solution for neutralizing the compounds attached to the surface of
It can be hot water or cold water. The slide valve device according to claim 4 is a valve drive means for opening and closing the valve, a detection means for detecting the position of the valve body, and a command signal to the valve drive means based on the detection result of the detection means. And a controller for outputting. With this configuration, it is possible to control the opening and closing of the valve and control the spraying of the liquid when the valve body is opened and closed. For example, according to the contents preset in the controller, it is possible to spray the liquid when the valve body opens and stop the liquid spraying when the valve body closes.

A slide valve device according to a fifth aspect is
The slide valve device according to claim 4, wherein when the valve is capable of adjusting the amount of liquid sprayed, the controller determines the moving direction of the valve element based on the detection result of the detection means, and the valve element Is determined to be moving in the closing direction, a command is output to the valve driving means to spray the liquid at a first spraying amount, and the valve body is moving in the opening direction. If you decide,
A command is output to the valve driving means so that the liquid is sprayed with a second spray amount. With this configuration, for example, when the valve body is opened, a large amount of cleaning water or the like can be sprayed to wash away the stored material from the surface of the valve body, and when the valve body is closed, a small amount of liquid is sprayed. Then, the surface of the valve body can be wetted.

The slide valve device according to claim 6 is
The valve driving means includes an abutting member provided on the valve body, a rotatable lever arranged near the valve body and abutting the abutting member, and the lever is always biased to one side. When the lever contacts the contact member, the lever rotates to the other side as the valve body moves to open and close the valve. With this configuration, it is possible to obtain a simple slide valve device without the need to prepare a complicated control device or program. The invention according to claim 7 has a plurality of liquid spraying means for spraying different kinds of the liquid, and supplies the liquid to one or more of the plurality of liquid spraying means by switching the valve. Is configured. With this configuration, it is possible to change the type of liquid to be sprayed during the opening and closing of the valve body. For example,
When the valve body opens, it sprays a neutralizing solution that neutralizes and cleans the deposits adhering to the surface of the valve body, and when the valve body closes, it reduces the friction between the valve body and the packing and improves the sealing performance. It is possible to apply a boosting lubricant.

The object of the present invention is also achieved by the method for spraying a liquid onto a valve body according to claims 8 to 10. That is, the invention according to claim 8 is the slide valve device having a valve body that moves back and forth from a direction traversing the opening to open and close the opening, and a drive body that moves the valve body back and forth. In the method for cleaning a valve body, liquid is sprinkled onto the valve body at least one of when the opening is closed by the valve body and when the opening is opened by the valve body, and the liquid is attached to the surface of the valve body. This is a method of spraying a liquid on a valve body for cleaning stored materials. Further, the invention according to claim 9 is a method for spraying a liquid on a valve body, which switches two or more kinds of liquids of different types at a predetermined timing and sprays the liquid on the valve body. Further, in the invention according to claim 10, when the opening is opened, a large amount of the liquid is sprayed on the valve body to wash the stored material, and when the opening is closed, the valve body is closed. A small amount of the above liquid is sprayed onto the valve body to maintain the wettability of the liquid.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described with reference to the drawings. [First Embodiment] FIG. 1 is a perspective view illustrating the configuration of a slide valve device according to a first embodiment of the present invention. For convenience of description, in FIG. 1, the support plates 12 and 13 of the slide valve device shown in FIG. 5 are omitted. Further, the same parts as those of the conventional slide valve device 10 described in FIG. 5 are designated by the same reference numerals, and detailed description of the parts will be omitted.

As shown in FIG. 1, a slide valve device 1
In A, the water spray pipe 2 for spraying the wash water to the valve body 14 is provided inside the valve body housing 11. The sprinkler pipe 2 is arranged above the valve body 14 and extends from one side portion to the other side portion in a direction traversing the valve body 14. Further, a plurality of water spray holes 2a are formed in the water spray pipe 2 toward the valve body 14 at equal intervals. This water spray hole 2a
The hole diameter and direction may be appropriately selected so that the wash water can be efficiently sprayed to the valve body 14.
Further, although not shown in the drawing, below the valve body 14, there is provided a wash water collecting part for collecting the wash water sprayed from the water spray pipe 2. Then, the cleaning water recovered by the cleaning water recovery unit is drained to the outside of the slide valve device 1A from a drain pipe 11a provided on the side surface of the valve body storage unit 11. Therefore, the stored material washed away from the valve body 14 by the cleaning water is less likely to accumulate inside the valve body storage section 11, and the inside of the valve body storage section 11 can be kept clean for a long period of time. The cleaning water drained from the drain pipe 11a is appropriately treated together with other factory drains as necessary.

A valve 4 is provided between the water supply pipe 3 for supplying the wash water to the water spray pipe 2 and the water spray pipe 2 for switching the supply and stop of the wash water to the water spray pipe 2. The valve 4 is operated by driving a driving body 5 such as a solenoid or a cylinder. The drive of the driving body 5 is controlled by the controller C. The controller C may be the same as the controller that controls the drive of the cylinder 15, or may be a separate body. This controller C includes proximity switches 15b, 1
The detection signal from 5c is input, and when this detection signal is input, a command signal for driving the driving body 5 is output. For example, when the valve body 14 moves in the direction to open the opening Ta (see FIG. 5) and the piston (not shown) in the cylinder 15 reaches the proximity switch 15c, a detection signal is output from the proximity switch 15c to the controller C. To be done. When the controller C receives the detection signal from the proximity switch 15c, the controller C outputs a command signal to the driver 5 to switch the valve 4. As a result, washing water is supplied from the water supply pipe 3 to the sprinkling pipe 2, and the valve body 14
The washing water (the washing water is indicated by reference symbol R in FIG. 1) is sprayed toward the. In this case, the wash water is sprayed from the sprinkling pipe 2 to the valve body 14 when the valve body 14 is open, but by using inexpensive wash water such as industrial water, the slide valve device The operating cost of 1A can be reduced.

Contrary to the above, when the valve body 14 moves in the direction of closing the opening Ta and the detection signal is output from the proximity switch 15b to the controller C, the controller C sends the valve 4 to the driving body 5. A command signal is output to switch the. As a result, from the water supply pipe 3 to the sprinkling pipe 2
The supply of washing water to the machine is stopped. By doing so, the wash water is supplied when the valve body 14 opens, and the valve body 14
While flushing the stored material from the surface of the packing 16 and keeping the surface wet when the valve body 14 is closed, the packing 16 (FIG.
Friction resistance with (see) can be reduced. Also,
By stopping the supply of cleaning water when the valve body 14 is closed, the amount of cleaning water used can be reduced.

In the slide valve device 1 of this embodiment, the moving direction of the valve body 14 is judged based on the detection signals from the proximity switches 15b and 15c, and the flush water is used when the valve body 14 is opened and when it is closed. It is possible to vary the application amount of. In this case, when the valve body 14 is opened, a large amount of cleaning water is sprayed to efficiently wash away the stored material from the valve body 14, and when the valve body 14 is closed, a small amount of cleaning water is sprayed to disperse the stored water. It is preferable to keep wettability. Further, when the valve body 14 is completely opened, the spraying of the wash water is stopped until the valve body 14 next starts to move in the closing direction, so that the amount of wash water used is reduced as much as possible. Is preferred. The procedure of processing in the controller C in such a case will be described with reference to the flowchart of FIG.

As shown in FIG. 2, the proximity switch 15b,
When a change occurs in the detection signal input from 15c (step S1), the controller C determines from the state of the detection signal before and after this change that the detection signal is "0" (the proximity switches 15b and 15c switch the pistons). The signal state when the detection signal is not detected) changes to the state of the detection signal “1” (the signal state when the piston is detected), or the state of the detection signal “1” changes to the detection signal “0”. It is judged whether it has changed to the state of ". Then, based on this, the moving direction of the valve body 14 is determined (step S2). For example, when the detection signal of the proximity switch 15b is switched from the state of "1" to the state of "0", it can be determined that the valve body 14 is moving in the opening direction, and the detection signal of the proximity switch 15c is When the state of “1” is switched to the state of “0”, it can be determined that the valve body 14 is moving in the closing direction.

When it is judged that the valve body 14 is moving in the opening direction, a command signal is output to the driving body 5 of the valve 4 to supply the washing water to the sprinkling pipe 2 and the opening amount of the valve 4 is changed. Adjustment is made to spray the washing water in an amount necessary to wash off the stored material from the surface of the valve body 14 through the sprinkling pipe 2 (step S3). When it is determined that the valve 4 is in the closing direction, a command signal is output to the driver 5 of the valve 4 to output the valve 4
Is changed to spray a small amount of cleaning water sufficient to moisten the surface of the valve body 14 from the water spray pipe 2 (step S4). When it is determined that the vehicle is moving in the closing direction, the controller C outputs a command signal to the driving body 5 when the detection signal "1" is input from the proximity switch 15b next time (step S5). The valve 4 is switched to stop the spraying of the washing water from the sprinkling pipe 2 (step S6). Further, when it is determined that the vehicle is moving in the opening direction and the detection signal “1” is input next from the proximity switch 15c (step S7), the controller C outputs a command signal to the driving body 5. The valve 4 is switched to stop the spraying of the washing water from the sprinkling pipe 2 (step S6).

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a perspective view illustrating the configuration of the slide valve device according to the second embodiment of the present invention. In the slide valve device 1B of this embodiment, the valve 6 between the water supply pipe 3 and the sprinkling pipe 2 rotates the cock 7 in the clockwise direction or the counterclockwise direction to supply or stop the wash water. It can be switched. An arm 7a extending to above the valve body 14 is attached to the cock 7. A tip end 7b of the arm 7a is bent downward at a position almost directly above the valve body 14 and engages with an abutting member 9 provided upright on the upper surface of the valve body 14. Also, the arm 7
A rod-shaped spring engaging portion 7c extending in the same direction as the arm 7a is provided near a, and a spring 8 is provided between the tip of the spring engaging portion 7c and the fixed portion of the valve body housing portion 11. It is stretched. That is, the cock 7 is constantly urged in the counterclockwise direction by the spring 8.

The cock 7 opens the valve 6 by rotating in the counterclockwise direction and enables the supply of washing water from the water supply pipe 3 to the sprinkling pipe 2. Further, by rotating in the clockwise direction against the biasing force of the spring 8, the valve 6 is closed and the supply of washing water is stopped. When the valve body 14 moves in the closing direction, the tip 7b of the arm 7a contacts the contact member 9, and the cock 7 rotates in the clockwise direction via the arm 7a as the valve body 14 moves. As a result, the valve 6 is gradually closed. And the valve body 14
Moves to a position where it completely closes the opening Ta, the valve 6 is in a completely closed state, and the spraying of washing water from the spray pipe 2 is stopped.

When the valve body 14 moves in the opening direction, the cock 7 is rotated counterclockwise by the urging force of the spring 8.
The valve 6 is opened, and the supply of washing water from the water supply pipe 3 to the sprinkling pipe 2 is restarted. The slide valve device 1B of this embodiment is advantageous in that it is not necessary to prepare a complicated control device, a program, and the like, can have a simple structure, and is unlikely to cause a failure. Further, also in the slide valve device 1B of this embodiment, due to its configuration,
When the valve body 14 is open, the washing water is sprayed from the sprinkling pipe 2 to the valve body 14 at all times. However, by using inexpensive washing water such as industrial water, the slide valve device 1B operates. The cost can be reduced. In FIG. 3, the contact member 9 is provided at a position eccentric from the axis of the piston rod 15a, but when the biasing force of the spring 8 is large, the contact member 9 is provided on the axis, The tip 7b may be brought into contact with the contact member 9 in the vicinity of the axis. By doing so, the bending moment acting on the piston rod 15a by the biasing force of the spring 8 can be reduced, and the piston rod 15a
Can be moved back and forth more smoothly.

[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a perspective view illustrating the configuration of the slide valve device according to the third embodiment of the present invention. The slide valve device 1C of this embodiment has two water sprinkling pipes, that is, a first water sprinkling pipe 2'and a second water sprinkling pipe 2 "arranged in parallel above the valve body 14. , The first sprinkler pipe 2'is provided with a first water supply pipe 3'through a valve 4 '.
The second water sprinkling pipe 2 ″ is connected to the second water supply pipe 3 ″ via the valve 4 ′.

The valve 4'is a switching valve capable of switching the supply path of the liquid such as cleaning water in two stages. By using such a valve 4 ', different kinds of liquids (difference in kind of liquid) In addition to the above, it is possible to spray (for example, a difference in temperature etc.) on the valve element 14 at a predetermined timing. For example, when the valve body 14 is moving in the opening direction, high-temperature washing water is sprayed from the first water spray pipe 2 ', and when the valve body 14 is moving in the closing direction, the second water spraying is performed. It can be set to spray cold wash water from the pipe 2 ". Depending on the type of storage, hot wash water can be sprayed on the surface of the valve body 14 when the valve body 14 opens. Further, the stored materials can be removed efficiently, and when the valve body 14 is closed, the low temperature wash water is sprayed to prevent the valve body 14 from being dried after the high temperature wash water is sprayed. The surface of 14 can be kept moist.

Also in this embodiment, as in the first embodiment, the valve body 14 is closed and the proximity switch 15b is closed.
When the detection signal “1” is output to the controller C, the spraying of the wash water may be stopped. The different kinds of liquids that can be sprayed in this embodiment are not limited to the above-mentioned high-temperature washing water and low-temperature washing water, but include a neutralizing solution that flushes the stored material from the surface of the valve body 14 and neutralizes it. Other liquids may be used. It is also possible to spray different kinds of liquids simultaneously from the two water spray pipes 2 ', 2 ".

Although the preferred embodiment of the present invention has been described, the present invention is not limited to the above embodiment. For example, in the above description, as the liquid, the cleaning water was mainly described as an example, but other liquids such as a neutralizing liquid and a lubricating liquid may be used instead of the cleaning water. Further, although the description has been given assuming that the valve body 14 is opened and closed by the cylinder 15 having the piston rod 15a, the valve body 14 may be moved by a rodless cylinder having no piston rod 15a. Furthermore, the proximity switch 15
Other detection means such as a limit switch or a photoelectric switch may be used instead of b and 15c, or the position of the valve body 14 may be directly detected by these detection means. Further, in the first embodiment, the proximity switch 15 is used when it is determined that it is moving in the opening direction.
Although it has been described that the spraying of the cleaning water from the spraying pipe 2 is stopped when the detection signal is input from c, a timer or a water flow meter is used to spray a certain amount of cleaning water after a certain period of time. At this time, the valve 4 may be switched to stop the spray of cleaning water.

Further, although the valve body 14 which moves forward and backward in the horizontal plane has been described as an example, the present invention can be applied to a slide valve device having a valve body which moves forward and backward in an inclined plane or a vertical plane. It is possible. Further, in the above-described third embodiment, the controller C allows the first sprinkler pipe 2 '.
However, the switching of the water spray pipes 2 ′ and 2 ″ can be performed by using the mechanical valve 6 as shown in the second embodiment. . Further, although the description has been given assuming that the two sprinkling pipes 2 ′ and 2 ″ are provided, the number of sprinkling pipes may be three or more.

[0030]

Since the present invention is constructed as described above, it is possible to extend the life of the packing and maintain the hermeticity for a long period of time. Further, even if the stored material in the tank is transported together with the valve element to the valve element storage portion, the surface of the valve element can be washed with a liquid, and the liquid containing the stored material can be collected to make a slide. It is possible to prevent the valve body housing portion of the valve device from being easily contaminated with stored materials. Therefore, maintenance, inspection of the slide valve device,
We can reduce the cost of repairs, improve the operating rate of equipment,
The cost can be reduced. Further, the present invention can be implemented at a low cost by merely making a simple improvement to the existing slide valve device.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a configuration of a slide valve device according to a first embodiment of the present invention.

FIG. 2 is a flowchart for explaining a procedure of processing by a controller when switching the spray amount of cleaning water.

FIG. 3 is a perspective view illustrating a configuration of a slide valve device according to a second embodiment of the present invention.

FIG. 4 is a perspective view illustrating a configuration of a slide valve device according to a third embodiment of the present invention.

FIG. 5 is a perspective view illustrating a configuration of a general slide valve device according to a conventional example of the present invention.

6 is a partially enlarged cross-sectional view taken along line I-I of FIG.

[Explanation of symbols]

1A, 1B, 1C slide valve device 2,2 ', 2 "watering pipe 2a Water spray hole 3,3 ', 3 "water supply pipe 4,4 ', 6 valves 5,5 'driver 7 cooks 8 springs 9 Contact member 10 Slide valve device 11 Valve body storage 12 Upper support plate 13 Lower support plate 14 valve body 15 cylinders 15a Piston rod 15b, 15c Proximity switch (detection means) 16 packing

Claims (10)

[Claims] 1. A slide valve device having a valve body that moves forward and backward from a direction traversing an opening to open and close the opening, and a drive body that moves the valve body forward and backward, wherein a surface of the valve body is provided. A slide valve device comprising: a liquid spraying means for spraying a liquid; and a liquid recovering means for recovering the sprayed liquid. 2. The slide valve device according to claim 1, further comprising a valve for supplying or stopping the liquid by the liquid spraying unit as the valve body moves back and forth. 3. The liquid includes a lubricating liquid for lubricating the surface of the valve disc, a cleaning liquid for cleaning the surface of the valve disc, and a liquid for neutralizing compounds adhering to the surface of the valve disc. The slide valve device according to claim 1 or 2, which contains a neutralizing solution, hot water, or cold water. 4. A valve driving means for opening and closing the valve, a detecting means for detecting a position of the valve body, and a controller for outputting a command signal to the valve driving means based on a detection result of the detecting means. It has, The slide valve apparatus of Claim 2 or 3 characterized by the above-mentioned. 5. When the valve is capable of adjusting the amount of liquid sprayed, the controller determines the moving direction of the valve body based on the detection result of the detecting means, and the valve body is moving in the closing direction. When it is determined that, a command is output to the valve drive means to spray the liquid in a first spray amount, and when it is determined that the valve body is moving in the opening direction, The slide valve device according to claim 4, wherein a command is output to the valve driving means so as to spray the liquid at a second spray amount. 6. A drive means for opening and closing the valve, an abutting member provided on the valve body, and a rotatable lever arranged near the valve body and abutting the abutting member. And a biasing means for constantly biasing the lever to one side. When the lever comes into contact with the contact member, the valve body moves to rotate to the other side to open and close the valve. The slide valve device according to claim 2 or 3, characterized in that. 7. A plurality of liquid spraying means for spraying different kinds of liquids are provided, and the liquid is supplied to one or more of the plurality of liquid spraying means by switching the valve. The slide valve device according to any one of claims 2 to 6, which is characterized in that. 8. A liquid spray to a valve body in a slide valve device having a valve body that moves forward and backward from a direction traversing the opening to open and close the opening, and a drive body that moves the valve body forward and backward. A method, wherein the liquid is sprinkled on the valve body at least one of when the opening is closed by the valve body and when the opening is opened by the valve body, and the storage adhered to the surface of the valve body. A method for spraying a liquid onto a valve body in a slide valve device, the method comprising: 9. The method for spraying a liquid on a valve body in a slide valve device according to claim 8, wherein two or more kinds of liquids of different kinds are switched at a predetermined timing and sprayed on the valve body. 10. When opening the opening, a large amount of the liquid is sprayed on the valve body to wash the stored material, and when closing the opening, a small amount of the liquid is poured into the valve body. The sprayability is maintained to maintain the wettability.
A method for spraying a liquid onto a valve body in the slide valve device according to the above item 3.