JPH0649846U - Valve device - Google Patents

Abstract

(57) [Abstract] [Purpose] The object of the present invention is to make it possible to open and close the valve body with one touch, to easily and quickly perform the work, and to downsize and simplify the device. And A valve rod 17 supporting a valve body 15 and a cam body 28 having a cam groove 31 with which the valve rod 17 is engaged and housed in a casing 25 are provided. In the valve device in which the valve body 17 is provided so as to be movable toward and away from the valve seat 12 by moving the valve body 17 along the valve seat 17, the cam is arranged to press the valve body 15 against the valve seat 12. An elastic body 36 for urging the body 28 by an elastic force is provided, and the cam body 28 is provided movably in a direction of opening the valve body 15 by an opening body 39 provided outside the casing 25. Is to be.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve device configured to open and close a valve body.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, for example, a valve device for powder particles provided in the lower portion of a container filled with powder particles is disclosed in Japanese Utility Model Laid-Open No. 61-38359. The valve device described in the publication includes a valve rod that supports the valve body, and a cam body that has a cam groove with which the valve rod engages and that is housed in a casing. The valve body 15 is provided so as to be movable toward and away from the valve seat 12 by rotating the valve rod by moving the valve body 15 along the valve seat 12.

When the valve body of this valve device is opened to take out the powder or granules, the air cylinder mechanism moves the cam body in the valve rod direction to rotate the valve rod to open the valve body. Was there. Also, when closing the valve body, the same operation was performed to move the cam body in the direction opposite to the above (conventional example 1).

In addition to the cylinder mechanism, there is also a case where the valve body is opened and closed by rotating a rotary handle (conventional example 2).

[0005]

[Problems to be solved by the device]

 However, in the valve device of the above-mentioned conventional example 1, when the valve body is closed, the cam body may move due to air leakage in the cylinder, and the valve body may be inadvertently opened. In order to prevent this air leakage, a separate locking mechanism is required, which has the drawback of increasing the size and complexity of the device.

Further, in the valve device of Conventional Example 2, since the valve body is opened and closed by operating the handle, the valve opening and closing work is complicated and troublesome.

The present invention has been made in view of the above-mentioned conventional problems, and makes it possible to open and close the valve element with one touch, so that the operation can be performed easily and quickly, and the device can be downsized. And it is an object to be able to achieve simplification.

[0008]

[Means for Solving the Problems]

 The technical means that the present invention has taken to solve the above-mentioned problems has a valve rod 17 for supporting the valve element 15 and a cam groove 31 with which the valve rod 17 is engaged, and is housed in a casing 25. A valve device including a cam body (28) and moving the cam body (28) along the valve rod (17) to rotate the valve rod (17) so that the valve body (15) can be brought into and out of contact with the valve seat (12). In the above, an elastic body 36 for urging the cam body 28 by an elastic force to press the valve body 15 against the valve seat 12 is provided, and the cam body 28 is attached to the open body 39 provided outside the casing 25. It is provided so as to be movable in the direction in which the valve body 15 is opened.

[0009]

[Action]

 In the valve device of the present invention, when the valve body 15 is closed, the elastic body 36 urges the cam body 28 by its elastic force, so that the valve body 15 is pressed against the valve seat 12 and is reliably closed. When the valve body 15 is opened, when the cam body 28 is pushed by the external opening body 39 to move it against the elastic force of the elastic body 36, the valve rod 17 rotates, so that the valve body 15 has a valve seat. The valve body 15 can be opened apart from the valve 12.

While the cam body 28 is fixed by the open body 39, the open state of the valve body 15 can be maintained, and when the release of the cam body 28 from the open body 39 releases the elastic body 36, 28 is returned to the original state, and the valve element 15 is pressed against the valve seat 12 again.

[0011]

【Example】

 Hereinafter, an example in which the present invention is applied to a so-called butterfly valve for powder particles will be described with reference to the drawings. In FIG. 3, reference numeral 1 denotes a container for powder particles that can be transported. The container 1 is fixed to the container body 3 in which the powder particles are charged and filled, the outer peripheral surface of the container body 3, and a caster at the lower end. 4 and a plurality of legs 5 and an opening / closing valve device 7 provided at the lower end of the container body 3.

As shown in FIGS. 1 and 2, the valve device 7 includes a valve casing 10 having a fluid passage opening 8 communicating with the inside of the container body 3 and an auxiliary valve casing 11 connected to a side portion thereof. Have.

Reference numeral 12 is a valve seat mounted on the upper surface of the valve casing 10 via a bolt 13 so as to be located at the peripheral edge of the opening 8, and the valve seat 12 has both heat resistance and elasticity. The seal ring is sandwiched and fixed by a ring body.

Reference numeral 15 denotes a valve body which is arranged so as to face the valve seat 12 and can open and close the opening 8 from below, and has a thin disk shape. Reference numeral 17 denotes a valve rod having a spherical bulge 19 inserted into a bearing hole 18 formed in the auxiliary valve casing 11, and the valve rod 17 has a spherical bulge portion 19 in the bearing hole 18. It can be eccentrically oscillated and rotated about the spherical bulging portion 19 as a fulcrum while being fitted to an interposed gland seal 20 and axially sealed by an O-ring (not shown). Further, one of the valve rods 19 is inserted into and fixed to a mounting portion 21 provided on the lower surface of the valve body 15 so as to project.

Reference numeral 23 denotes an actuator for eccentrically swinging and rotating the valve rod 17 with the spherical bulging portion 19 as a fulcrum, and is attached to the auxiliary valve casing 11. The actuator 23 includes a front cover 24 into which the valve rod 17 is inserted, a tubular main body casing 25, and a rear cover 26, and a sliding support portion 25 a formed in the main body casing 25 has a cam. A cylindrical cam 28 as a body is fitted inside so as to be slidable in the axial direction of the valve rod 17 and not relatively rotatable.

That is, an insertion hole 29 opening to the front surface is formed at the axial center of the cylindrical cam 28, and the other of the valve rods 17 is inserted into the insertion hole 29. A guide pin 30 provided on the other side of the valve rod 17 is slidably fitted in cam grooves 31 provided on both sides of the cylindrical cam 28. The cam groove 31 has an eccentric portion 31a for swinging the valve rod 17 with the spherical bulging portion 19 as a fulcrum, and a spiral rotation portion 31b for rotating the valve rod 17. .

A large-diameter flange portion 33 is formed at the rear end of the cylindrical cam 28 so as to project radially outward, and the flange portion 33 is formed in a groove 34 formed in the slide support portion 25 a of the main body casing 25. A coil spring 36, which is an elastic body accommodated, is constantly urged toward the rear cover 26. Therefore, here, the cylindrical cam 28 is slid toward the rear cover 26 side at the rear, the guide pin 30 is positioned at the eccentric portion 31a of the cam groove 31, and the cylindrical cam 28 is moved by the elastic force of the coil spring 36. Holds valve stem 17 to press 15 against valve seat 12.

Reference numeral 38 denotes a pressing bar for sliding the cylindrical cam 28 forward, and the flange portion 33 of the cylindrical cam 28 is projected so as to project from the rear cover 26 through an insertion hole 26 a formed in the rear cover 26. It is integrally provided in the center of. Therefore, by pushing the pressing bar 38 against the coil spring 36, the guide pin 30 slides along the cam groove 31, and the valve rod 17 eccentrically swings to move the valve body 15 out of the valve seat 12. After being separated downward, the opening 8 can be opened by further rotating 90 °.

The present embodiment has the above-described structure. Next, as an example of its use, for example, the powder or granular material as a raw material manufactured in a raw material manufacturing factory is stored in the container 1 and processed into a product. The case of transportation to a processing factory will be described.

First, in order to store the manufactured powder or granular material in the container 1, the coil spring 36 shown in FIG. 1 presses the flange portion 33, so that the cylindrical cam 28 retracts and the guide pin 30 moves into the cam groove 31. Is located at the eccentric portion 31a. At this time, the elastic force of the coil spring 36 urges the valve rod 17 on one side having the valve body 15 upward, and the valve body 15 is in close contact with the valve seat 12 in a closed state.

With the valve body 15 closed in this manner, the powder particles are put into the container body 3 and filled. Then, the powdery material is conveyed to the processing factory while being filled in the container 1. During the transportation, the coil spring 36 constantly presses the valve body 15 against the valve seat 12 via the cylindrical cam 28, so that the powder particles do not leak out carelessly.

Next, when the container 1 is conveyed to a predetermined position in the processing factory to take out the powder or granular material, the press bar 38 is inserted into the predetermined position as shown in FIG. An open body 39 having a recess 40 is provided. Therefore, when the pressing bar 38 is inserted into the fitting recess 40 and pushed in, the cylindrical cam 28 advances, so that the guide pin 30 first slides on the eccentric part 31 a, and at this time, the valve rod 17 expands spherically. The valve body 15 is separated from the valve seat 12 downward by oscillating eccentrically around the projecting portion 19. Further, by sliding the guide pin 30 on the rotating portion 31b, the valve body 15 rotates 90 ° in the vertical direction without opening any sliding contact with the valve seat 12 side to open the opening 8, and the granular material Can be distributed.

When the valve body 15 is closed again, when the pressing bar 38 is separated from the fitting recess 38 by separating the open body 39 or moving the container 1, the cylindrical force is generated by the elastic force of the coil spring 36. The cam 28 is retracted while the pressing bar 38 is projected. Due to the sliding of the cylindrical cam 28, the valve rod 17 rotates in the opposite direction, the valve body 15 again comes into close contact with the valve seat 12, and the opening 8 is closed.

Therefore, in the above-described embodiment, when the powder or granules manufactured in the manufacturing factory are transported and processed in the processing factory, the powder or granules filled in the container 1 are processed by one-touch. It can be easily removed from the container body 3. Moreover, since the coil spring 36 presses the valve body 15 against the valve seat 12 when the valve body 15 is closed, the granular material does not inadvertently leak to the outside.

The present invention is not limited to the above embodiment, the elastic body is not limited to the coil spring 36, and the cylindrical cam 28 is always rearward, that is, the direction in which the pressing bar 38 projects. Anything that urges

Further, in the above embodiment, the pressing bar 38 is provided on the cylindrical cam 28 side as a means for sliding the cylindrical cam 28. However, the opening body 39 is provided in a rod shape without the pressing bar 38. Alternatively, the opening body 39 may be inserted to directly press the flange portion 33 of the cylindrical cam 28.

In the above embodiment, the valve device 7 is attached to the container 1 for transportation, but the valve device 7 is rotatably mounted on the support 42 as shown in FIG. It is also possible to attach it to the rotating drum 43. Further, it is needless to say that the valve device may be configured to open and close the valve body 15 by simply rotating the valve rod 17, in addition to the structure in which the valve rod 17 is eccentrically rocked and rotated. Is. Moreover, the fluid substance may be a gas or a liquid, and other than that, in the present invention, the specific configuration of each part can be arbitrarily changed in design within the scope intended by the present invention.

[0028]

[Effect of device]

 The valve device of the present invention is provided with an elastic body for elastically urging the cam body to press the valve body against the valve seat, and the cam body is an open body provided outside the casing. Since it is provided so as to be movable in the direction to open the body, the valve body can be opened by one-touch, that is, by sliding the cam body with the open body, and by separating the open body from the cam body. With the elastic body, the cam body can be slid to constantly close the valve body.

Therefore, the opening and closing work of the valve body can be performed easily and quickly as compared with the case of the conventional handle, and the leakage of the fluid can be surely prevented as compared with the case of using the cylinder, but the air flow can be prevented. It eliminates the need for a dedicated lock mechanism to prevent leakage, simplifies the device, makes it smaller, and makes it easier to handle, and its practical value is enormous.

[Brief description of drawings]

FIG. 1 is a sectional front view showing a valve closed state according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view showing the valve open state.

FIG. 3 is an overall front view of a state in which a valve device is attached to a container.

FIG. 4 is an overall front view of a state in which a valve device is attached to the drum reversing device.

[Explanation of symbols]

12 ... Valve seat, 15 ... Valve body, 17 ... Valve rod, 28 ... Cylindrical cam (cam body), 31 ... Cam groove, 36 ... Coil spring (elastic body),
39 ... Open body

Claims (2)

[Scope of utility model registration request] 1. A cam body having a valve rod (17) for supporting the valve body (15) and a cam groove (31) with which the valve rod (17) is engaged and housed in a casing (25). (28) and by moving the cam body (28) along the valve rod (17),
In a valve device in which the valve rod (17) is rotated to allow the valve body (15) to move toward and away from the valve seat (12), the valve body (15) is pressed against the valve seat (12). An elastic body (36) for urging the cam body (28) with an elastic force is provided, and the cam body (2) is provided.
8) is an open body (3) provided outside the casing (25)
The valve device according to 9) is provided so as to be movable in a direction of opening the valve body (15). 2. The valve device according to claim 1, wherein the elastic body (36) is a coil spring.