JP3840088B2 - On-off valve device for granular materials - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an on-off valve device for a granular material.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, the following open / close valve devices for this type of powder are known.
A cylindrical casing having an inlet at the upper part and an inclined outlet having an acute angle with respect to the horizontal plane at the lower part, and a cylindrical casing that opens and closes the inclined outlet of the cylindrical casing through an arm. One having a movable valve body and an actuating device for operating a swing arm (valve body) is known.
In the conventional on-off valve device, since the outlet is an inclined outlet, the powder on the upper surface of the valve body in the inclined state facing the inclined outlet when the discharge of the granular material is completed and the valve body is to be closed The granular material flows downward from the gap between the lower side of the valve body and the lower end of the inclined outlet edge, and the granular material is less likely to remain on the upper surface of the valve body, and the valve body and the inclined outlet when the valve body is closed There is an advantage of preventing biting of the powder and granular material between the edges.
[0003]
[Disadvantages of the prior art]
The conventional on-off valve device has the following drawbacks.
Once the valve body is closed, the valve body is kept in close contact with the edge of the inclined outlet, so that when the granular material is caught between the valve body and the edge of the inclined outlet, the valve body is bitten. There is no chance to discharge the dust particles, the state continues and the particles remain attached to the edge of the valve body or inclined outlet, and the edge of the valve body and inclined outlet must be cleaned frequently. There was a drawback of having to.
[0004]
[Means for solving problems]
The present invention employs the following means in order to eliminate the above disadvantages.
Invention 請 Motomeko 1, the axis forms the vertical direction, have the inlet at the upper end, an inclined outlet at an acute angle relative to a horizontal plane beneath the end, the horizontal support shaft of the convex set in opposition to the peripheral surface a tubular casing you, and a long hole is the horizontal fitted to the support shaft of the pair of swingable about a horizontal support shaft arm having at one end of the respective fixed both side edge to the other end of the arm a valve body that opens and closes the inclined outlet, to press the valve body, a state and a valve pusher which is not connected to said valve body, said valve body having a gap to permit passage of the particulate material in a normal state and wherein in said slot by pressing the valve body pusher without opposing the inclined outlet is arranged to close the horizontal is restricted to the support shaft to move to the inclined outlet direction the inclined outlets To do .
[0005]
【The invention's effect】
The present invention has the following effects by the configuration as described above.
According to the invention 請 Motomeko 1, for the following reasons, definitive when the valve body is closed automatically biting of granular material between the edges of the inclined outlets and the valve body (naturally) prevented Therefore, it is not necessary to frequently clean the edge of the valve body and the inclined outlet.
[Reason 1] In the normal state, the valve body is made to face the inclined outlet with a gap allowing passage of the granular material, and remains on the edge of the inclined outlet and the upper surface of the valve body. It has a structure that always drops and discharges.
[Reason 2] Since the valve body is configured so that the long hole is regulated by the horizontal support shaft by the press of the valve body pusher and moves in the direction of the inclined outlet, so that the inclined outlet is closed. even if the state of biting the powdery particles with the edge, that the transfer bitten with the dynamic granular material of the valve body is adapted to push upward.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
In this description, “front” refers to the right side of FIG. 1, “rear” refers to the left side of FIG. 1, “left” refers to the rear side of FIG. 1, and “right” refers to the front side.
[0007]
An inlet 5 of an on-off valve device 4 for the granular material is connected to an outlet 2 at the lower part of the upper granular material storage tank 1.
The on-off valve device 4 includes a cylindrical casing 7 having an inlet 5 at an upper portion and an inclined outlet 6 having an acute angle with respect to a horizontal plane at a lower portion and opening toward the front. 7 and a cover 9 having a rectangular horizontal cross section open at the bottom. Note that the width of the edge of the inclined outlet 6 is made as narrow as possible by chamfering the edge of the inclined outlet 6.
[0008]
An inlet 11 of the lower granular material storage tank 10 is connected to the cover body 9.
[0009]
Horizontal support shafts 13 parallel to a virtual inclined surface including the inclined outlet 6 (with the axis oriented in the left-right direction) are provided on the left and right portions of the upper portion of the cylindrical casing 7, and the constricted portions 13 a of these horizontal support shafts 13 are provided. The valve body 14 is swingable to the horizontal support shaft 13 by being fitted into a long hole 16 of an upward projecting arm 15 provided in the plate-shaped valve body 14. The long hole 16 is inclined downward toward the front and has a width equal to the diameter of the constricted portion 13 a of the horizontal support shaft 13. With such a configuration, the valve body 14 is swingable back and forth and is movable in a direction parallel to the longitudinal direction of the long hole 16 within a range in which the long hole 16 moves along the horizontal support shaft 13. .
[0010]
The valve body 14 is configured to face the inclined outlet 6 with a gap 18 allowing passage of powder particles in a normal state (the state indicated by a solid line in FIG. 1). With such a configuration, the granular material remaining on the edge of the inclined outlet 6 and the upper surface of the valve body 14 can be always dropped and discharged. Therefore, the granular material is hardly bited by the upper half of the valve body 14 and the edge of the inclined outlet 6.
[0011]
A fluid pressure cylinder 20 is provided on the front wall of the cover body 9 so as to face the upper part of the valve body 14 (upper side from the center in the vertical direction), and the valve body pusher 21 composed of a rod of the fluid pressure cylinder 20 has a shaft. The front wall of the cover body 9 penetrates through the front wall so that the heart is directed in the front-rear direction and protrudes into the cover body 9. The valve body pusher 21 presses the valve body 14 against the edge of the inclined outlet 6 by projecting backward from the standby position indicated by the solid line in FIG. 1.
[0012]
The cylindrical casing 7 is formed with a communication hole 23 that makes the pressure inside the cylindrical casing 7 and the outside of the cylindrical casing 7 (inside the cover 9) uniform. Note that the size and shape of the communication hole 23 are determined so that the powder particles do not flow out of the communication hole 23.
[0013]
Operation of the Embodiment of the Invention
Next, the operation of the embodiment of the invention will be described.
In order to store the granular material in the upper granular material storage tank 1, the valve body 14 is pushed by the valve body pusher 21, the valve body 14 is pressed against the edge of the inclined outlet 6, and the inclined outlet 6 is moved by the valve body 14. close. During this operation, the valve body 14 first swings around the horizontal support shaft 13 in the direction of arrow A in FIG. When the valve element 14 hits the lower edge of the inclined outlet 6, the valve element 14 is swung counterclockwise in FIG. 1 around the point of contact with the inclined outlet 6. As the valve body 14 swings counterclockwise, the long hole 16 moves upward along the horizontal support shaft 13 (constriction 13a). As a result, the valve body 14 closes the inclined outlet 6 while moving obliquely upward along the virtual inclined surface including the inclined outlet 6. As is clear from this description, the long hole 16 is a long hole having an inclination such that the valve body 14 moves as described above. By this operation, even if it becomes a state where the granular material is bitten between the valve body 14 and the edge of the inclined outlet 6, the bited granular material can be pushed upward.
When the inclined outlet 6 is closed by the valve body 14, a predetermined amount of powder is supplied to the upper powder storage tank 1.
And if a predetermined amount of granular material is supplied to the upper granular material storage tank 1, supply of the granular material to the upper granular material storage tank 1 will be stopped.
Thereafter, when the valve body pusher 21 is retracted to make the valve body 14 free, the valve body 14 swings to the position of the one-dot chain line in FIG. As a result, the granular material enters the lower granular material storage tank 10.
And if the granular material of the upper granular material storage tank 1 falls in the lower granular material storage tank 10, the valve body 14 will return to an initial state (position on the continuous line of FIG. 1) with dead weight.
[0014]
[Modifications]
A description will be given below of modifications and the like.
(1) The granular material includes powder, granular material, fine thin piece, short fiber piece and the like.
(2) The shape of the valve body 14 is arbitrary.
(3) The operating device of the valve body pusher 21 is arbitrary.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
[Explanation of symbols]
4 On-off valve device 5 for granular material Inlet 6 Inclined outlet 7 Cylindrical casing 20 Fluid pressure cylinder 21 Valve body pusher

Claims (1)

Axis forms the vertical direction, the inlet to the upper end, a tubular casing that the inclined outlet at an acute angle relative to a horizontal plane beneath the end, having a horizontal support shaft which convex set in opposition to the peripheral surface,
A pair of arms each having a long hole at one end thereof fitted into the horizontal support shaft and swingable about the horizontal support shaft;
A valve body that opens and closes the inclined outlets is fixed to both side ends to the other end of the arm,
Presses the valve body, and a valve body pusher not connected to the valve body,
The valve body the inclined outlet direction the slot by pressing the valve body pusher without opposing the inclined outlet in a state in which a gap to permit passage of particulate material in a normal state is restricted to the horizontal support shaft An on- off valve device for a granular material, which is configured to move to and close the inclined outlet.

Images