JPH07248095A - Drain discharge manual valve - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a drain discharge manual valve that is attached to a filter or a lubricator of a pneumatic circuit and that can discharge drain accumulated in a pressure vessel by an easy operation. [Structure] A discharge flow path 1 which is attached to the bottom of a pressure vessel 49 and includes a valve structure part that opens and closes a drain discharge flow path and a valve operation part that performs an on-off valve operation, and communicates with the outside along an axis.
8 and 38 are formed, and the valve structure is always provided with a spring 7 from above.
A valve body 25 that is urged to shut off the discharge flow paths 18 and 38 at the upper end side, and a valve body 25 that is hung vertically from the valve body 25
A valve rod 24 that is inserted loosely into the inside is provided, and a lever-shaped operation member that pushes up the valve body 25 upward through the valve rod 24 to release the discharge flow paths 18 and 38 is provided in the valve operation portion. The lever-shaped operating member is rotatably mounted in such a manner as to cross a part of the discharge flow path 38 in an orthogonal manner, and has a swinging rotary shaft having an operating surface with which the lower end of the valve rod contacts, and a swinging rotation. The shaft is rotatably supported and one end thereof is composed of an operation lever housed between upper and lower stoppers formed on the outer side of the valve operation part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain for appropriately discharging drain accumulated in a filter or a lubricator attached to a pneumatic circuit for driving a cylinder or the like using compressed air. The present invention relates to a manual valve for discharge.

[0002]

2. Description of the Related Art In this type of pneumatic circuit, high quality compressed air has come to be demanded in recent years as it is used in particularly precise equipment, and it is generated in the pneumatic circuit and accumulated in a filter or a lubricator. A drain discharge valve with a simple operation that can discharge the drain in a timely manner is required. The most common conventional drain discharge valve is, for example, JISB83.
There is a drain-type drain valve structure, such as the drain discharge valve specified in No. 71, which opens and closes the discharge passage by discharging or discharging the drain by tightening or loosening a screw. Also, for example, U.S. Pat. No. 3,450,146 and Japanese Utility Model Publication 59.
As disclosed in Japanese Patent No. 5279, a proposal has been made in which an elastic sleeve that is deformed by pressing is used to open and close the drain discharge passage. Further, for example, as disclosed in Japanese Utility Model Application Laid-Open No. 63-6797, a structure in which a drain valve is axially displaced from the lower side to an upper side to open and close a discharge flow path through a joint, and an actual operating system. 61-121197 or Japanese Utility Model Laid-Open No. 63-170
As disclosed in Japanese Patent No. 696, there has been proposed a structure in which the discharge flow path is opened and closed by changing the direction of the axial movement by a pressing operation from a right angle direction.

[0003]

However, in the case of the above-mentioned screw type drain valve structure, the operability is poor because the operation of twisting the screw clockwise or counterclockwise is required, and in particular If the O-ring is in close contact when pressure is applied, it becomes more difficult to operate and drain cannot be satisfactorily discharged. Excessive twisting force may damage the filter or lubricator to which the drain valve is attached. There is also. Further, in the case of the structure using the elastic sleeve described above, the elastic sleeve is pressed and deformed around the valve in the axial direction and the direction orthogonal to the axial line, so that the wear is severe,
It is difficult to obtain a stable drain discharge over a long period of time, especially in a place where it is frequently used. Also, in the case of a structure that displaces the drain valve from the lower side to the upper side in the axial direction via a joint,
There is a difficulty in operability because it is necessary to operate the thin tubular operation member with the fingertip to vertically operate it with an appropriate pushing force, and the pushing direction is not biased or excessive pushing force is not applied. If not carefully adjusted, the valve structure, the filter or the lubricator may be damaged. Also,
In the case of a structure that opens and closes the discharge flow path by changing the direction of the axial movement by pressing operation from the right angle direction, the pressing force from the direction orthogonal to the moving direction acts on the valve element to ensure smooth opening and closing operation. If the filter or lubricator is vertically supported with its upper end side being cantilevered, the force in the axial direction and the direction perpendicular to the filter may be applied. It may damage the lubricator. Furthermore, since these drain valves are manually operated to open and close the valves to discharge the drain, the drain may sometimes be forgotten. Therefore, an object of the present invention is to provide a drain discharge manual valve for solving the problems of the conventional techniques.

[0004]

In order to solve the above-mentioned problems, in a first drain drain manual valve according to the present invention, the drain valve is mounted on the bottom of a pressure vessel in which the drain is accumulated, and the drain inside the pressure vessel is exposed to the outside. The valve structure part that opens and closes the flow path to be discharged to the valve structure part, and the valve operation part that operates the opening and closing valve of the valve structure part immediately below this valve structure part A discharge flow path communicating with the outside is formed along the valve body, and the valve structure is spring-biased downward to close the discharge flow path at the upper end side, and the valve body vertically extends from the valve body. A movable valve member including a valve rod that is loosely inserted into the discharge flow passage is provided, and the valve operating portion is rotatably mounted in a manner to cross a part of the discharge flow passage in an orthogonal manner. , A swinging rotary shaft having an operating surface with which the lower end of the valve rod comes into contact, and the swinging rotary shaft is rotatable. A lever-shaped operating member is provided which is supported and one of which is housed between upper and lower stoppers formed on the outer side of the valve operating portion. The lever is depressed to operate the swinging rotary shaft. The surface pushes the movable valve member upward to release the discharge flow path.

In the second drain manual valve according to the present invention, there is provided a valve structure portion which is mounted on the bottom of the pressure container in which the drain is accumulated and which opens and closes a flow path for discharging the drain in the pressure container to the outside. , And a valve operating portion for performing opening / closing valve operation of the valve structural portion immediately below the valve structural portion, and the valve structural portion and the valve operating portion have a discharge flow path communicating with the outside along an axis. When the internal pressure of the pressure vessel drops below a certain pressure when the valve structure section is spring-biased upward, a valve body that releases the discharge flow path at the upper end side, and the valve body that is hung vertically from the valve body A check valve is provided by a valve rod that is inserted loosely into the flow path, and an elevating rod whose lower end is projecting toward the valve operating portion side is urged downwardly just below this valve rod. The valve operating portion is provided in such a manner that it crosses a part of the discharge flow path in an orthogonal manner. An oscillating rotary shaft that is movably mounted and has an operating surface with which the lower end of the elevating rod abuts, and an oscillating rotary shaft that rotatably supports and one end of which is formed on the outer side of the valve operating portion. A lever-shaped operating member is provided between the upper and lower stoppers, and the operating surface of the swinging rotary shaft pushes up the check valve upwards via the lifting rod when the operating lever is pushed down. The discharge passage closed by the internal pressure of the pressure vessel is opened.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drain discharge manual valve according to the present invention will be described below in detail with reference to the illustrated embodiments. As shown in FIG. 1, the drain discharge manual valve 1 is composed of a valve structure portion 2 and a valve operation portion 3, and the lower end side of the valve structure portion 2 is fitted into the valve operation portion 3 to engage a locking pin. 4 are integrally connected.
As shown in FIG. 2, the valve structure 2 includes a valve body 5 having a cylindrical shape, a movable valve member 6 for opening and closing a flow path formed in the valve body 5, and a movable valve member 6 attached thereto. A coil spring 7 which is a biasing spring member, a spring retainer 8 which locks and holds one end of the coil spring 7, and O-rings 9, 10 and 11 which are seal members which are attached to respective main parts to perform sealing. It is composed of. The valve operating portion 3 includes an operating portion main body 12, a swinging rotary shaft 13 pivotally mounted in the operating portion main body 12 in a fitted state, and the swinging rotary shaft 1.
An operating lever 14 for swinging and rotating 3 from the outside, an O-ring 15 that is a seal member that is attached to the swinging rotary shaft 13 and seals between the swinging rotary shaft 13 and the operating portion main body 12, It is composed of a locking pin 16 which is a locking member for locking the swinging rotary shaft 13 to the operation portion main body 12 so as not to come off. The rocking rotary shaft 13 and the operating lever 14 constitute a lever operating member that rocks and rotates.

The valve body 5 has a valve chamber 17 having a large-diameter circular hole along the axial center on the upper side of the inside thereof, and a small-diameter circle having an upper end communicating with the valve chamber 17 on the lower side and penetrating to the lower end. It is a cylindrical body in which communication holes 18 are formed by holes, and a male screw 19 for attachment is engraved on the outer periphery on the upper side. Valve body 5
An annular flange portion 20 is formed at the upper end of the annular flange portion 20, and an annular groove 21 into which the O-ring 10 is mounted is engraved in a portion under the neck of the annular flange portion 20. An annular locking groove 22 into which the locking pin 4 is inserted on both sides and an annular groove 23 into which the O-ring 9 is mounted are formed on the outer circumference of the lower end side of the valve body 5.
Are engraved respectively. A valve seat surface 29 is formed on the bottom surface of the valve chamber 17 at the opening edge of the communication hole 18.
The movable valve member 6 is integrally configured by a valve rod 24 formed by a small-diameter rod that is loosely fitted in the communication hole 18, and a valve body 25 formed by a disc-shaped flange formed on the upper end of the valve rod 24. A spring receiving protrusion 26 is provided on the upper surface of the.
The spring retainer 8 is composed of a leaf spring in which a large number of petal-shaped projecting pieces 28 in the radial direction are projected from a disc having a through hole 27 in the center so as to be inclined upward.

When the valve structure 2 is assembled, the valve rod 24 is inserted into the communication hole 18 with the movable valve member 6 fitted in the valve rod 24, and the O-ring 11 is inserted.
Is placed on the valve seat surface 29 formed on the bottom surface of the valve chamber 17, and is housed in the valve body 5. The coil spring 7 is attached to the valve body 2 with the lower end fitted in the spring receiving projection 26.
The coil spring 7 is placed on the upper surface of the coil spring 5, and the upper end of the coil spring 7 is held by a spring retainer 8 fitted and locked into the annular flange portion 20 in a press-fitted state. The annular groove 23
An O-ring 9 is attached to the.

The operation portion main body 12 has a rectangular outer shape, and a drain nozzle 31 is integrally provided vertically from the lower end portion. In the upper half of the operation portion main body 12, the valve structure portion 2 is arranged along the axial direction.
A circular fitting hole 32 for accommodating the lower end side of the
A pivot hole 33 for accommodating the swinging rotary shaft 13 is bored in the lower half along a direction orthogonal to the axis, and the pivot hole 33 is bored in the center of the bottom surface of the fitting hole 32. It is communicated with the fitting hole 32 through the through hole 34 provided. As shown in FIG. 3, the operation portion main body 12 has the pivot hole 33.
Is provided with a counterbore hole 30 on one side surface in the lateral direction that opens, and an arcuate sliding surface having the same width as the counterbore hole 30 along one side surface in the longitudinal direction in which the pivot support hole 33 extends. A notch groove 44 is formed so that the upper and lower edges of the notch groove 44 form stoppers 44a and 44b, respectively. Further, the fitting hole 32 is provided in the operation section body 12.
An insertion hole 35 is formed in parallel with the through hole 34 from the bottom surface of the operation hole 34. The insertion hole 35 crosses the pivot hole 33 at a right angle and reaches the lower end side of the operation portion main body 12. Further, on the upper end side of the operation portion main body 12, the other side of the operation portion main body 12 is traversed from both ends of the long groove 36 formed in one outer surface of the operation portion main body 12 across the inner edge portion of the fitting hole 32. An insertion hole 37 reaching to is formed in parallel. Drainage nozzle 3
In the first example, a drainage hole 38, which is in direct communication with the through hole 34 through the pivotal support hole 33, is bored in the axial center. In this embodiment, a locking step portion 31a for connecting the hose is provided on the outer peripheral surface of the drain nozzle 31 so that the drain port can be extended from the drain nozzle 31 to the drain facility through the hose.

The oscillating rotary shaft 13 is provided with a notch groove 39 which is formed by cutting out a part of a cylinder having an outer diameter which can be fitted into the pivotal support hole 33 into a semi-cylindrical shape. The inner bottom surface of 39 is formed flat and constitutes an operation surface for the valve rod 24. In addition, a notch groove 39 and a locking groove 40 formed by inclining at a predetermined angle to form a part of a cylinder in a slot shape,
Annular groove 4 formed by cutting out over the entire circumference
1 and a connecting protrusion 42 provided at one end of the swinging rotary shaft 13. The operation lever 14 is provided with a mounting portion 4 for the swinging rotary shaft 13 on one end side of a plate-shaped piece having a semi-cylindrical shape.
3 is formed, and a mounting hole 45 and an insertion hole 46 are formed in the mounting portion 43.

When assembling the valve operating portion 3, the O-ring 15 is fitted in the annular groove 41 of the swinging rotary shaft 13, and the connecting projection 42 of the swinging rotary shaft 13 is fitted in the mounting hole 45 of the operating lever 14. Lock pin 4 press-fitted into the insertion hole 46 with
It is fixed at 7 and constitutes an integral lever operation member. In this lever operating member, the swinging rotary shaft 13 is fitted into the pivotal support hole 33 of the operating portion main body 12 in such a manner that the mounting portion 43 is housed in the counterbore hole 30, and the operating lever 14 is attached to the operating portion main body 12. The locking pin 16 fitted into the notch groove 44 and inserted through the insertion hole 35 is fitted into the locking groove 40 to prevent the operation portion main body 12 from coming off. As a result, the swinging rotation shaft 13 is swingably attached to the operation portion main body 12 in a state where the inner bottom surface of the flat notch groove 39 which is the operation surface is inclined at a predetermined angle with respect to the horizontal plane. In the valve structure 2 and the valve operating part 3 assembled in this way, the lower end side of the valve structure 2 is inserted from the fitting hole 32 of the valve operating part 3, and the tip of the valve rod 24 of the movable valve member 6 is inserted. Hole 3
4 is inserted into the cutout groove 39 so as to abut the inner bottom surface of the cutout groove 39, and the locking pins 4 inserted from the insertion holes 37 are fitted to both sides of the annular locking groove 22. The valve operating portion 3 is integrally connected to form the drain discharge manual valve 1.

The drain discharge manual valve 1 is attached to a pressure vessel (bowl) such as a filter or a lubricator mounted in the pneumatic circuit, and the drain generated in the circuit and accumulated in the bowl is opened and closed. Eject at appropriate times by operation.
For example, in the pneumatic circuit shown in FIG. 5, a filter F, a pressure reducing valve R, a lubricator L, etc. are piped in a flow path connected to a pneumatic pressure control circuit including one pneumatic pressure source P and the other pneumatic pneumatic cylinder. It is used by being attached to the filter F and the lubricator L.

When the drain discharge manual valve 1 is attached, first, as shown in FIG. 4, the inner screw of the sleeve 48 having the inner and outer circumferences each engraved with the screw and the annular flange formed at the upper end is attached to the valve main body 5 described above. The male screw 19 of the valve 48, and the O-ring 10 is clamped between the inner peripheral side of the upper surface of the sleeve 48 and the annular flange portion 20 of the valve body 5 to compress the valve body 5 and the sleeve 48. Seal the gap with the peripheral side. Next, from the inside of the bowl 49 which is a transparent pressure vessel, the drain discharge manual valve 1 attached to the sleeve 48 is
When the nut member 51 fitted in the mounting hole 50 formed in the bottom surface of the bowl 49 and screwed into the outer screw of the sleeve 48 is tightened, the nut member 51
The bowl 49 is sandwiched between and the annular flange of the sleeve 48, and the drain discharge manual valve 1 is attached. An annular groove is provided at the upper opening edge of the mounting hole 50, and the O-ring 52 accommodated in the annular groove is connected to the bowl 49.
And the sleeve 48 is sealed.

The drain discharge manual valve 1 is normally shown in FIG.
As shown in, the spring force of the coil spring 7 and the drain chamber 5
The movable valve member 6 receiving the compressed air pressure in 3 is urged downward, and the O-ring 11 pressed by the valve body 25 of the movable valve member 6 is compressed and formed at the edge of the upper end opening of the communication hole 18. The oscillating rotary shaft 13 which is in close contact with the valve seat surface 29 and the outer periphery of the valve rod 24 and which is pressed by the tip of the valve rod 24 is rotated to a position where the inner bottom surface of the notch groove 39 is inclined upward to the right. The operation lever 14 is moved and locked by the stopper 44a in a substantially horizontal state. As a result, between the valve chamber 17 communicating with the drain chamber 53 via the opening portion of the spring retainer 8 and the communication hole 18 communicating with the drain hole 38 via the pivot support hole 33 and the through hole 34. Is closed, and the drain generated in the pneumatic circuit is sequentially accumulated in the valve chamber 17 and the drain chamber 53.

When discharging the accumulated drain,
As shown in FIG. 5, when the fingertip is directed to the upper surface of the operating lever 14 and is pushed down to a state where it is locked by the stopper 44b of the cutout groove 44, the swinging rotary shaft 13 is linked to this in a clockwise direction. The valve rod 24, which is rotated and the tip of which is in contact with the inner bottom surface of the cutout groove 39 of the swinging rotary shaft 13, is forcibly pushed up by the principle of leverage, so that the valve opening / closing portion is released from the close contact with the O-ring 11. The valve chamber 17 and the communication hole 18 are communicated with each other, and the drain accumulated in the valve chamber 17 and the drain chamber 53 is a space formed between the outer circumference of the valve rod 24 and the inner circumference of the communication hole 18. Further, the water is discharged from the drainage hole 38 to the outside through a gap formed between the outer circumference of the swinging rotary shaft 13 and the inner circumference of the pivot hole 33. Further, when the fingertip is released from the operation lever 14 to release the pressing, the movable valve member biased by the coil spring 7 automatically returns to the valve closed state.

Next, a drain discharge manual valve according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. In the above-described first embodiment, the valve structure portion 2 is normally closed by being biased by the coil spring 7 regardless of the internal pressure of the drain chamber 53, and is opened by operating the valve operating portion 3. While the drain is discharged, in this embodiment, when the internal pressure of the drain chamber is equal to or higher than a certain pressure, the drain is discharged by the same operation as in the first embodiment, and when the internal pressure of the drain chamber drops below the certain pressure, the valve structure portion is released. Automatically opens the valve so that the drain can be discharged regardless of the operation of the valve operation part. In the description of the embodiments, the same members as those in the previous embodiment are denoted by the same reference numerals in the drawings, detailed description thereof will be omitted, and different points will be mainly described. To do.

This drain discharge manual valve includes a valve body 54.
And a valve operating portion mounted on the operating portion main body 12 and positioned on the lower side. The valve structural portion and the valve operating portion are fitted to the operating portion main body 12. The lower end side of the valve body 54 is fitted in the fitting hole 32 and is integrally connected by the locking pin 4. The valve operating portion has substantially the same configuration as the valve operating portion 3 of the first embodiment except that the swinging rotary shaft 13 and the operating lever 14 are integrally formed of, for example, a plastic material so as to be suitable for mass production. . In the valve structure portion, a valve chamber 55 formed by a stepped groove hole is formed on the upper side of the valve body 54, and a drive chamber 56 formed by a stepped groove hole is formed on the lower side, and a communication hole 57 communicates between them. The movable valve member 6 that is integrally formed in the first embodiment
Is divided into a check valve member 58 and a lifting rod 59,
The check valve member 58 is housed in the upper part of the valve body 54, and the lifting rod 59 is housed in the lower part.

In the check valve member 58, the valve body 61 is housed in the valve chamber 55 in such a manner that the tip end of the valve rod 60 inserted through the communication hole 57 in a loose fit shape projects toward the drive chamber 56 side.
Is urged upward by a coil spring 62 interposed between the seat surface and the bottom surface of the valve chamber 55. The coil spring 62 is opened when the inside of the drain chamber 53 of the pressure container 49 is below a certain pressure so that the seat surface of the valve body 61 is separated from the O-ring 11 which is a valve sealing member, and above the certain pressure. The spring force is set so that the seat surface of 61 is pressed against the O-ring 11 to close the valve. Lifting rod 59
The annular flange portion 65 is housed in the drive chamber 56 with the operating shaft portion 63 inserted through the retainer 64. The retainer 64 is a petal-shaped leaf spring 66 inserted into the opening edge portion of the drive chamber 56. It is locked so as not to prevent it from coming off, and is urged downward by a coil spring 68 interposed between the bottom surface of the drive chamber 56 and the annular flange portion 65 such that the lower end is fitted into the spring receiving projection 67. It should be noted that the annular flange portion 65 has a flow for discharging the drain by a means such as making the outer diameter smaller than the inner diameter of the drive chamber 56, providing a notch groove on the outer peripheral surface, or forming a communication hole on the plate surface. The road is formed. Further, the retainer 64 has the operation shaft portion 63.
A passage for discharging the drain is formed by making the insertion with and loosely fitting and providing a notch groove on the upper surface side.

The lower end side of the valve body 54 is provided on the operating body 1
When fitted into the fitting hole 32 of No. 2, the coil spring 68
The lower end of the operating shaft portion 63 protruding from the drive chamber 56 is inserted into the insertion hole 34 of the operating portion main body 12 of the elevating rod 59 urged downward by Are connected so as to abut. The drain discharge manual valve of the second embodiment as described above is operated by the air pressure flowing from the drain chamber 53 of the pressure container 49 to the valve chamber 55 in the normal operating state in which a predetermined air pressure is applied to the pneumatic circuit. Is pressed and the coil spring 62 is
Since the check valve member 58 is pushed down against the spring force of, the seat surface of the valve body 61 is in pressure contact with the O-ring 11 to close the valve. Further, the lifting rod 59 is urged downward by the coil spring 68 so that the tip of the operating shaft portion 63 presses the bottom surface of the cutout groove 39 of the rotary rocking shaft 13 to cause the operating lever 14 to move.
Is pushed up and is in a horizontal position. Therefore, in such an operating state, as in the first embodiment, when the operating lever 14 is pushed downward to push up the elevating rod 59 against the spring force of the coil spring 68, the spring receiving projection 67 is pushed. The check valve member 58 is pushed up through the abutting valve rod 60, the seat surface of the valve element 58 is separated from the O-ring 11, and the valve is opened, so that the drain is discharged.

Next, when the air pressure applied to the air pressure circuit drops, for example, when the compressor is stopped after the work of one day is completed, the drain chamber 53 of the pressure container 49.
When the internal pressure gradually decreases and the pressure applied to the valve element 61 decreases below a predetermined pressure, the check valve member 58 is pushed up by the urging force of the coil spring 62, so that the seat surface of the valve element 61 separates from the O-ring 11. The valve opens. Therefore, in this case, the operation lever 14 is provided on the valve operation unit side.
Since the drain will be automatically discharged without the operation of
As compared with the case of the first embodiment, forgetting to remove the drain is eliminated.

The present invention is not limited to the above-mentioned embodiments, but various modifications can be made within the scope of the invention. For example, in the embodiment, the O-ring 10 is used as the valve seal member, and the valve seal member is the valve body 25.
However, a disc-shaped valve seal member may be attached integrally with the valve body 25. Further, in the embodiment, the valve structure 2 is attached to the bowl which is the pressure container via the sleeve 48, but it may be attached directly without the sleeve.

[0022]

As is apparent from the above-described embodiments, in the drain discharge manual valve according to claim 1 of the present invention, when the operating lever is pressed with the fingertip and pushed down vertically, it is pivotally rotated like a lever. Since the movable valve member moves vertically upward by the shaft and the valve opening operation can be performed to drain the drain in the pressure vessel, compared to the various structures described as the conventional example, Can be obtained. . This push-down operation is not only easy to operate, but the operating lever and the movable valve member are both moved in the axial direction, and the movable range of the operating lever is restricted by being locked by the upper and lower stoppers. Of course, the filter and the lubricator, which are of course attached to the valve structure itself, are not subjected to the excessive force displaced as in the case of the prior art, and there is no risk of damaging them.

Further, in the drain discharge manual valve according to a second aspect of the present invention, the movable valve member is separately formed into an upper check valve and a lower elevating rod, and the check valve has a constant pressure or less in the drain chamber. When the exhaust flow path is released, the spring is biased upward so that the exhaust flow path is released, and if the exhaust flow path is closed by the check valve when the drain chamber is at a certain pressure or higher, it is swung by the operating lever. The lifting / lowering rod is pushed up by the dynamic rotating shaft to release the discharge flow path by the check valve. Therefore, when the pressure in the pipeline decreases, such as when the compressor is stopped after the work of the day is completed, drainage is automatically performed, and forgetting to drainage is prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembled state of a drain discharge manual valve according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the drain discharge manual valve of FIG.

3A and 3B are a front view and a side view of a valve operating portion main body of the drain discharge manual valve of FIG.

FIG. 4 is a vertical cross-sectional view showing a mounted state of the drain discharge manual valve of FIG.

5 is a perspective view showing a usage state of the drain discharge manual valve of FIG. 1. FIG.

FIG. 6 is a vertical cross-sectional view of a drain drain manual valve according to a second embodiment of the present invention.

7 is an exploded perspective view of the drain discharge manual valve of FIG. 6;

[Explanation of symbols]

 1 Drain discharge manual valve 2 Valve structure part 3 Valve operation part 4,16,47 Locking pin 5,54 Valve part body 6 Movable valve member 7,62,68 Coil spring 8 Spring retainer 9,10,11,15, 52 O-ring 12 Operation part main body 13 Swinging rotary shaft 14 Operating lever 17,55 Valve chamber 18,57 Communication hole 19 Male screw 20,65 Annular flange part 21,23 Annular groove 22 Locking groove 24,60 Valve rod 25, 40,61 Valve body 26,67 Spring receiving projection 27,34 Through hole 28 Projecting piece 29 Valve seat surface 30 Counterbore hole 31 Drain nozzle 31a Lock step 32 Fitting hole 33 Pivoting hole 35, 37 Insert hole 36 Long groove 38 Drainage Hole 39 Notch Groove 41 Annular Groove 42 Connection Protrusion 43 Mounting Part 44 Notch Groove 44a, 44b Stopper 45, 50 Mounting Hole 46 Insertion Hole 48 Sleeve 49 Pressure Capacity (Bowl) 51 nut member 53 drain chamber 56 drive chamber 58 Chetsuku valve member 59 lifting rod 63 operating shaft 64 retainer 66 leaf spring

Claims (2)

[Claims] 1. A valve structure mounted on the bottom of a pressure container in which drain is accumulated, for opening and closing a flow path for discharging drain in the pressure container to the outside, and the valve structure directly below the valve structure. And a valve operating portion for performing the on-off valve operation.The valve structure portion and the valve operating portion are formed with a discharge flow path communicating with the outside along the axis, and the valve structure portion is provided with a spring downward. A movable valve member is provided which includes a valve body that is urged to close the discharge flow path on the upper end side, and a valve rod that is vertically hung from the valve body and that is loosely inserted into the discharge flow path. A swinging rotary shaft, which is rotatably mounted on the valve operating portion in such a manner as to cross a part of the discharge flow path in an orthogonal manner, and has an operating surface with which the lower end of the valve rod contacts, and the swinging rotary shaft. An operation in which the shaft is rotatably supported and one end is housed between upper and lower stoppers formed on the outer side of the valve operation part. A drain-like operating member is provided by means of a lever, and the operation surface of the swinging rotary shaft pushes up the movable valve member upward to release the discharge flow path when the operating lever is pushed down. Manual valve for discharge. 2. A valve structure part mounted on the bottom of a pressure container where drainage is accumulated, for opening and closing a flow path for discharging drainage inside the pressure container to the outside, and the valve structure part immediately below this valve structure part. And a valve operating portion for performing the on-off valve operation.The valve structure portion and the valve operating portion have a discharge flow path communicating with the outside along the axis, and the valve structure portion is provided with a spring upward. A valve body that releases the discharge flow path at the upper end side when the internal pressure of the pressure vessel drops below a certain pressure by being urged, and a valve that is hung from the valve body and is loosely inserted into the discharge flow path. A check valve composed of a rod is provided, and an elevating rod whose spring is biased downward and whose lower end side is projected toward the valve operating portion is provided directly below the valve rod, and the discharge passage is provided in the valve operating portion. Is rotatably mounted so as to cross a part of the rod in an orthogonal manner, and the lower end of the lifting rod is contacted. A lever including an oscillating rotary shaft having an operating surface in contact with the oscillating rotary shaft and an operating lever rotatably supporting the oscillating rotary shaft and having one end housed between upper and lower stoppers formed on the outer side of the valve operating portion. -Like operation member is provided, and the operation surface of the rocking rotary shaft pushes up the check valve upward through the elevating rod by pushing down the operation lever,
A drain discharge manual valve, characterized in that the discharge passage closed by the internal pressure of the pressure vessel is opened.