JPH0420108B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Field of Industrial Application This invention relates to an opening/closing device for a rotary valve with an auxiliary valve, which is provided with a main valve element and an auxiliary valve element, and opens and closes both valve elements by rotating the two valve elements with an input shaft. It is something.

(2) Prior art and problems to be solved by the invention Utility Model Application No. 56-106274 was used as a switchgear as described above.
The one disclosed in the above publication is known. As shown in FIG.
A main valve body 103 that opens and closes 2 is rotatably arranged,
This main valve body 103 is provided with a communication hole 105 that communicates with the main valve body in the valve box on the upstream and downstream sides, and a sub-valve body 106 that opens and closes the communication hole is rotatably disposed. There is. Main valve body 103 and sub valve body 1
06 has a main valve shaft 107 and an auxiliary valve shaft 108, respectively.
However, the auxiliary valve shaft 108 is rotatably fitted into the main valve shaft 107 and fixedly fitted thereto. In addition, the main valve shaft 10
7 and one end of each of the sub valve shaft 108 is connected to the valve box 10.
1, the sub-valve shaft 108 is protruded so as to be longer than the sub-valve shaft 108, and an input shaft 110 for the main valve body and an input shaft 111 for the sub-valve body are attached to the projecting end. 109
is a bending transmission part that connects the main valve shaft 107 and the main valve body input shaft 110.

By the way, in the opening/closing device described above, when opening and closing the main valve body 103 and the sub-valve body 106, the input shaft 110 for the main valve body and the input shaft 111 for the sub-valve body must be operated individually, and the operation is difficult. The problem is that it is troublesome. Therefore, the technical object of the present invention is to enable the main valve body and the sub-valve body to be operated in conjunction with each other using a single input shaft.

(3) Means for Solving the Problems This invention solves the above-mentioned problems, and the opening/closing device of the first invention has a main valve body at one end of the main valve shaft protruding outside the valve box. At the same time, a driven gear member for the auxiliary valve body is fixed to one end of the auxiliary valve shaft, and an input shaft is disposed parallel to both of the valve shafts, and each of the driven gear members and Teeth that mesh with each other and rotate the main valve element and the sub-valve element 90 degrees to fully open or fully close are formed in a part of the circumferential direction, and the outside diameter of the other tooth parts is equal to or less than the tooth bottom diameter. A driving gear member for the main valve element and a driving gear member for the auxiliary valve element, which are formed in the toothless part, are each fixed to the input shaft, and the teeth of both drive gear members are connected to the drive gear member for the auxiliary valve element. After the sub-valve element is rotated 90 degrees from fully closed to fully open due to the meshing of the gear member with the driven gear member for the sub-valve element, the teeth of the drive gear member for the main valve element become the driven gear member for the main valve element. a first lock for the main valve body, which is out of phase so as to mesh with the gear member, and has locking portions at positions facing the toothless portions of both drive gear members on the input shaft in the axial direction; The locking member and the first locking member for the sub-valve body are fixed, and both of the first locking members are fixed.
Corresponding to the locking member, the tooth portion of the driving gear member for the main valve element is located at a position facing the driven gear member for the main valve element in the axial direction at one end of the main valve shaft. fixing a second locking member for the main valve body having a locking portion that locks with the locking portion of the first locking member for the main valve body when the main valve shaft does not mesh with the gear member; At the same time, at a position axially facing the driven gear member for the auxiliary valve body at one end of the auxiliary valve shaft, there is provided a auxiliary valve in which the teeth of the drive gear member for the auxiliary valve body do not mesh with the driven gear member for the auxiliary valve body. The present invention is characterized in that a second lightening member for the sub-valve body is fixed, which has a locking portion that locks with the locking portion of the first locking member for the sub-valve body when the valve shaft is not rotated.

Further, in the opening/closing device of the second invention, a driven gear member for the main valve body is fixed to one end of the main valve shaft protruding outside the valve box, and a driven gear member for the sub valve body is fixed to one end of the sub valve shaft. A gear member is fixed, and an input shaft is provided parallel to the two valve shafts, and an intermediate shaft is provided between the input shaft and both valve shafts in parallel thereto, and a driven gear for the main valve body is attached to the intermediate shaft. fixing an intermediate gear member for the main valve element that meshes with the member, and fixing an intermediate gear member for the auxiliary valve element that meshes with the driven gear member for the auxiliary valve element, and meshing with each of the intermediate gear members; A toothed portion that rotates the main valve body and the auxiliary valve body by 90 degrees to fully open or close each is formed in a part of the circumferential direction, and the outside diameter of the tooth portion other than the toothed portion is the tooth root diameter or less. A driving gear member for the main valve element and a driving gear member for the auxiliary valve element formed in the part are respectively fixed to the input shaft, and the teeth of both the driving gear members are connected to the driving gear member for the auxiliary valve element. After the auxiliary valve element is rotated 90 degrees from fully closed to fully open due to the meshing between the teeth and the intermediate gear member for the auxiliary valve element, the teeth of the drive gear member for the main valve element engage with the intermediate gear member for the main valve element. a first lock for the main valve body, which is out of phase so as to mesh with the gear member, and has locking portions at positions facing the toothless portions of both drive gear members on the input shaft in the axial direction; A stop member and a first stop member for the auxiliary valve body are fixed, and a main stop member is installed at a position on the intermediate shaft facing the intermediate gear member for the main valve body in the axial direction, corresponding to both the first stop members. A lock that locks the teeth of the driving gear member for the valve body with the locking portion of the first locking member for the main valve body when the main valve shaft does not mesh with the intermediate gear member for the main valve body. A second locking member for the main valve body having a stop portion is fixed, and a tooth portion of a drive gear member for the secondary valve body is placed at a position facing the intermediate gear member for the secondary valve body in the axial direction. a second lock for a sub-valve body having a locking portion that locks with a locking portion of the first locking member for the sub-valve body when the sub-valve shaft does not mesh with the intermediate gear member for the body; It is characterized by fixed members.

(4) Action When the input shaft is rotated from the fully closed state where the main valve body closes the flow path and the sub valve body closes the communication hole, the teeth of the drive gear member for the sub valve body and the drive gear member for the sub valve body close. The sub-valve shaft is rotated by meshing with the driven gear member, whereby the sub-valve body opens the communication hole, and when rotated 90 degrees, fully opens the communication hole. When the input shaft continues to rotate, the meshing of the sub-valve gear system ends, and the teeth of the drive gear member for the main valve body of the main valve gear system begin to mesh with the driven gear member for the main valve body. As a result, the main valve shaft is rotated, and the main valve body opens the flow path, and when rotated 90 degrees, the flow path is fully opened. At this time, the sub-valve body relatively closes the communication hole. As a result, the main valve body fully opens the flow path, and the sub valve body closes the communication hole, resulting in a fully open state.

Next, to achieve a fully closed state, the input shaft is rotated in the opposite direction. As a result, contrary to the above, the main valve element first fully closes the flow path, and then the sub valve element closes the communication hole to return to the original fully closed state.

(5) Effects of the invention The main valve shaft and the sub-valve shaft are rotated by a single input shaft, the main valve body and the sub-valve body are moved, and when opening, the main valve body is moved after the sub-valve body is fully opened. When fully opened and closed, the main valve body can be fully closed after the main valve body is fully closed. Misoperation can be reliably prevented. In addition, since the sub-valve element can be fully closed when the main valve element is fully closed, when the amount of water to be conveyed is small at the time of installation in the pipeline, the amount of water to be conveyed can be reduced by simply opening and closing the sub-valve element. can be adjusted,
It is possible to prevent a pressure increase in the downstream pipeline.

(6) Embodiment In Figs. 1 to 3, 1 is a valve box having an inlet 2 on one side and an outlet 3 on the other side. A shaft 6 is rotatably supported. A main valve body 8 that opens and closes the flow path 7 is fixed to the main valve body 6, and a communication hole 10 is bored in the center of the main valve body 8 to communicate the inlet 2 and the outlet 3 of the valve body 1. has been done. A sub-valve shaft 11 is rotatably fitted into the main valve shaft 6, and a sub-valve body 13 for opening and closing the communication hole 10 is fixed to the sub-valve shaft 11. A driven gear member 15 for the main valve body having a lower driven gear 14 is fixed to one end of the main valve shaft 6 protruding from the bearing part 5 to the outside of the valve case 1 via a key 16. A driven gear member 19 for an auxiliary valve element having a driven gear 18 at the lower part is fixed via a key 20 to one end of the auxiliary valve shaft 11 that protrudes outside the valve housing 1 .

On the other hand, a cover case 22 is installed on the bearing part 5 so as to cover both the driven gear members 15 and 19,
In the case, the input shaft 23 is connected to both valve shafts 6 and 11.
It is rotatably supported parallel to the Input shaft 23
A drive gear member 27 for the main valve body and sub-valve body, which has drive gears 25 and 26 at positions facing the driven gears 14 and 18, is fixed to the drive gear member 27 via a key 28.
The driving gear 25 meshes with the driven gear 14 and the main valve body 8
A toothed portion 29 that rotates 90° to fully open or close the
A toothless portion 31 whose outer diameter is the tooth root diameter other than the tooth portion 29
It is composed of. The driving gear 26 includes a toothed portion 30 that meshes with the driven gear 18 and rotates the sub-valve body 13 by 90 degrees to fully open or close it, and a toothless portion 32 whose outer diameter is the bottom diameter of the teeth other than the toothed portion 30. It is composed of. In addition, the tooth portions 29 and 30 of the drive gears 25 and 26
When the tooth portion 29 of the drive gear 25 meshes with the driven gear 14, the tooth portion 30 of the drive gear 26 does not mesh with the driven gear 18, and conversely, the tooth portion 30 of the drive gear 26
0 is in mesh with the driven gear 18, the phase is shifted so that the tooth portion 29 of the drive gear 25 does not mesh with the driven gear 14.

Locking protrusions 34 and 35 are provided on the drive gear member 27 that faces the toothless parts 31 and 32 of the drive gears 25 and 26 in the axial direction. Further, the driven gear member 15 for the main valve body has a tooth portion 29 of the drive gear 25.
A locking recess 37 is provided that locks with the locking protrusion 34 of the drive gear member 27 when the main valve shaft 6 is not rotating and does not mesh with the driven gear 14. 26 teeth 30 are driven gears 18
A locking recess 38 is provided that locks with the locking protrusion 35 of the drive gear member 27 when the sub-valve shaft 11 does not mesh with the locking protrusion 35 of the driving gear member 27.

In addition, in FIG. 1, 40 is a valve seat for the main valve body 8;
41 is the valve seat for the valve body 13, and 4 is the bearing part 5, 5'.
2, 42' are bearings, 43, 43' are pushers, 4
4 and 44' are packings, 45 and 45' are packing holders, and in the bearing portion 5', 46' is a support member for the main valve shaft 6, 47' is a jack bolt, and 48' is a cover. In the upper part of the cover case 22, 50 is a worm reducer, and a worm wheel (not shown) is connected to the upper end of the input shaft 23. By rotating the operating handle 51, the worm on the handle shaft and the worm wheel are connected. input shaft 2 through
3 is made rotatable.

The operation of the above embodiment will be explained.

The main valve body 8 connects the flow path 7, and the sub valve body 13 connects the communication hole 10.
In the fully closed state shown in FIGS. 1 and 4 when the valves are closed, respectively, the tooth portion 30 of the driving gear 26 of the sub-valve gear system meshes with the driven gear 18, as shown in FIGS. 3A to 3D. Tooth section 2 of drive gear 25 of main valve gear system
9 and the driven gear 14 do not mesh with each other. Also, at this time, the locking protrusion 3 of the drive gear member 27 of the main valve system
4 is the locking recess 37 of the driven gear member 15 for the main valve body.
The locking protrusion 35 of the drive gear member 27 of the sub-valve system is not locked with the locking recess 38 of the driven gear member 19 for the sub-valve body.

When the input shaft 23 is rotated in the opening direction by the operating handle 51 from this fully closed state, the auxiliary valve shaft 11 is rotated by the meshing of the driven gear 18 with the teeth 30 of the drive gear 26 of the auxiliary valve gear system. Sub-valve body 1
3 opens the communication hole 10 of the main valve body 8, and when the teeth 30 of the drive gear 26 and the driven gear 18 complete meshing, the sub valve body 13 is rotated 90 degrees, as shown in FIG. The communication hole 10 is fully opened. At this time, the relationship between the main and auxiliary valve body gear systems and the locking portions of the main and auxiliary valve systems is as shown in FIGS. 6A to 6D.

When the meshing between the tooth portion 30 of the drive gear 26 and the driven gear 18 is completed, the meshing between the tooth portion 29 of the drive gear 25 of the main valve gear system and the driven gear 14 starts as shown in FIG. 6D. . Therefore, input shaft 2
When 3 continues to rotate in the opening direction, the main valve shaft 6 is rotated due to the engagement between the teeth 29 of the drive gear 25 of the main valve body gear system and the driven gear 14, thereby causing the main valve body 8 to rotate.
opens the flow path 7, and the teeth 2 of the drive gear 25
When the engagement between the driven gear 9 and the driven gear 14 approaches the end, the main valve body 8 is rotated by 90 degrees to fully open the flow path 7 as shown in FIG. At this time, the relationship between the main and auxiliary valve body gear systems and the locking portions of the main and auxiliary valve systems is as shown in FIGS. 8A to 8D. When the main valve body 8 is opened, the teeth 29 of the driving gear 25 of the sub-valve gear system do not mesh with the driven gear 14, so the sub-valve shaft 11 is not rotated, and therefore the sub-valve body 13 is Since the main valve body 8 remains in the same position, when the main valve body 8 reaches the fully open position as described above, the communication hole 10 is relatively closed.

Next, in order to return to the original fully closed state from the fully open state shown in FIG. 7 where the main valve body 8 fully opens the flow path 7 and the subvalve body 13 closes the communication hole 10, rotates in the closing direction, which is the opposite direction to the above. When the input shaft 23 rotates, the main valve shaft 6 is rotated by the engagement between the teeth 29 of the driving gear 25 of the main valve body gear system and the driven gear 14, whereby the main valve body 8 first closes the flow path 7. Then, when it is rotated 90 degrees, the flow path 7 is completely closed. In this state, the tooth portion 29 of the drive gear 25 of the main valve body gear system and the driven gear 14 have finished meshing, while the tooth portion 30 of the drive gear 26 of the auxiliary valve body gear system has finished meshing.
The driven gear 18 has started to mesh. Therefore, when the input shaft 23 continues to rotate in the closing direction, the auxiliary valve shaft 11 is rotated by the meshing of the driven gear 18 with the teeth 30 of the driving gear 26 of the auxiliary valve gear system, and as a result, the auxiliary valve shaft 11 is rotated. closes the communication hole 10 that is opened when the flow path 7 is fully closed by the main valve body 8, and when the engagement between the tooth portion 30 of the drive gear 26 and the driven gear 18 approaches the end, the sub valve body 13 closes. It is rotated 90 degrees and reaches the fully closed state.

As described above, from fully closed to fully open, the communication hole 10 is fully opened by the sub valve body 13, and then the flow path 7 is fully opened by the main valve body 8, and from fully open to fully closed, the flow path 7 is fully opened by the main valve body 8. After the channel 7 is completely closed, the communication hole 10 is completely closed by the sub-valve body 13 to prevent the water hammer phenomenon caused by the sudden closure of the main valve body 8. Also, when opening the main valve body 8 and the sub valve body 13,
When the main valve body 8 is opened, the locking protrusion 35 of the sub-valve system is locked with the locking recess 38, and when the sub-valve body 13 is opened, the locking protrusion 34 of the main valve system is locked. Sub-valve body 1 that is locked with the locking recess 37 and is not released.
3. Prevents the main valve body 8 from shaking due to the flow of fluid.

FIGS. 9 and 10A to 10D show another embodiment, in which the main valve shaft 6a and the auxiliary valve shaft 11a
A driven gear member 65 for the main valve body having a driven gear 64 and a driven gear member 67 for the auxiliary valve body having a driven gear 66 are fixed via keys 68 and 69, and both valve shafts are fixed at one end thereof. An intermediate shaft 71 is disposed between and parallel to the input shaft 23a and the input shaft 23a, rotatably supported by a cover case at the bottom thereof, and the driven gear 64,
Collars 77, 78, and 79 are installed so that the intermediate gear member 74 for the main valve body and the intermediate gear member 75 for the sub valve body, each having intermediate gears 72 and 73 meshing with the valve body 64, do not shift in the axial direction. Fixed through. Both the intermediate gear members 74 and 75 have the main valve shaft 6a or the auxiliary valve shaft 1 in which the tooth portions 29a and 30a of the driving gears 25a and 26a do not mesh with the intermediate gears 72 and 73.
The locking protrusion 3 of the drive gear member 27a during non-rotation of 1
4a, 35a are provided with locking recesses 81, 82. Since the structure of other parts is the same as that of the previous embodiment, the same reference numerals are given the same reference numerals and the letter "a" is added to the same parts, and detailed explanation thereof will be omitted. In this embodiment, the operation is the same except that the main valve body and the sub-valve body rotate in the opposite direction to the above to open and close the flow passage and the communication hole.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention;
Fig. 2 is an enlarged sectional view of the gear parts for the main valve body and the sub-valve body, and Figs. 3A to 3D are line A-A in Fig. 2;
A cross-sectional plan view taken along B-B, C-C, and D-D. Fig. 4 is a cross-sectional plan view when the main valve body and sub-valve body are both fully closed. Fig. 5 is a cross-sectional plane view when the main valve body is fully closed and the sub-valve body is fully closed. A cross-sectional plan view with the valve body fully open, FIGS. 6A to 6D are cross-sectional plan views corresponding to FIGS. 3A to 3D in the state of FIG. 5,
Figure 7 is a cross-sectional plan view with both the main valve body and the sub-valve body fully open.
Figure 8 shows Figures 3A to 3D in the state of Figure 7.
9 is an enlarged sectional view corresponding to FIG. 2 showing another embodiment of the present invention, and FIG. 10 is a cross-sectional view corresponding to the lines AA, BB, C- C, D
-D is a cross-sectional plan view taken along line D, and FIG. 11 is a vertical cross-sectional side view of the conventional example. 1...Valve box, 2...Inflow port, 3...Outflow port,
5, 5'...Bearing part, 6...Main valve shaft, 7...Flow path,
8... Main valve body, 10... Communication hole, 11... Sub-valve shaft, 14, 18... Driven gear, 15... Driven gear member for main valve body, 19... Driven gear for sub-valve body Member, 23... Input shaft, 25, 26... Drive gear,
27... Drive gear member, 29, 30... Teeth, 3
1, 32... Missing tooth portion, 34, 35... Locking protrusion,
37, 38...Latching recess.

Claims (1)

[Scope of Claims] 1. A main valve body that opens and closes a flow path is rotatably disposed in a valve box, and a communication link is provided to the main valve body to communicate with the main valve body in the valve box on the upstream side and the downstream side. A hole is bored, and a sub-valve body for opening and closing the communication hole is rotatably disposed, a main valve shaft is attached to the main valve body, a sub-valve stem is attached to the sub-valve body, and a sub-valve is attached to the main valve stem. An auxiliary valve in which the shafts are rotatably fitted and fixed, and one end of each of the main valve shaft and the auxiliary valve shaft is arranged so as to protrude outside the valve box so that the auxiliary valve shaft is longer. In the opening/closing device for a rotary valve, a driven gear member for the main valve body is fixed to one end of the main valve shaft protruding outside the valve box, and
A driven gear member for the auxiliary valve body is fixed to one end of the auxiliary valve shaft, and an input shaft is disposed parallel to both of the valve shafts, meshing with each of the driven gear members, and connecting the main valve body and the auxiliary valve body. A main valve that is formed in a toothless part where a tooth part that rotates 90 degrees to fully open or fully close is formed in a part of the circumferential direction, and the outside diameter of the other tooth part is less than the root diameter of the tooth part. A drive gear member for the main body and a drive gear member for the sub-valve body are each fixed to the input shaft, and the teeth of both drive gear members are connected to the teeth of the drive gear member for the sub-valve body and the drive gear member for the sub-valve body. After the auxiliary valve element is rotated 90 degrees from fully closed to fully open due to the engagement with the driven gear member, the teeth of the drive gear member for the main valve element mesh with the driven gear member for the main valve element. A first locking member for the main valve body and a first locking member for the sub-valve body, which are out of phase, and have locking portions at positions facing the toothless portions of both drive gear members on the input shaft in the axial direction, respectively. A first locking member for the main valve body is fixed, and a first locking member for the main valve body is fixed at a position facing the driven gear member for the main valve body at one end of the main valve shaft in the axial direction, corresponding to both first locking members. A locking portion that locks together with a locking portion of the first locking member for the main valve body when the main valve shaft is not rotated when the tooth portion of the driving gear member does not mesh with the driven gear member for the main valve body. At the same time, teeth of a drive gear member for the sub-valve body are fixed at a position facing the driven gear member for the sub-valve body in the axial direction at one end of the sub-valve shaft. The sub-valve body has a locking part that locks with the locking part of the first locking member for the sub-valve body when the sub-valve shaft is not rotated and the part does not mesh with the driven gear member for the sub-valve body. An opening/closing device for a rotary valve with a sub-valve, characterized in that a second locking member is fixed. 2. A main valve body that opens and closes the flow path is rotatably arranged in the valve box, and a communication hole is bored in the main valve body so that the upstream and downstream sides communicate with the main valve body in the valve box. , a sub-valve body for opening and closing the communication hole is rotatably disposed, a main valve shaft is rotatably fitted to the main valve body, a sub-valve shaft is rotatably fitted to the sub-valve body, and a sub-valve shaft is rotatably fitted to the main valve shaft. An opening/closing device for a rotary valve with an auxiliary valve, in which the main valve shaft and the auxiliary valve shaft are arranged so that one end of the main valve shaft and the auxiliary valve shaft protrude outside the valve box so that the auxiliary valve shaft is longer than the other. A driven gear member for the main valve body is fixed to one end of the main valve shaft protruding outside the valve box, and
A driven gear member for the sub-valve body is fixed to one end of the sub-valve shaft, and an input shaft is arranged parallel to the two valve shafts, and an intermediate shaft is arranged between the input shaft and both valve shafts in parallel thereto. , an intermediate gear member for the main valve element that meshes with the driven gear member for the main valve element is fixed to the intermediate shaft, and an intermediate gear member for the auxiliary valve element that meshes with the driven gear member for the auxiliary valve element. is fixed, meshes with each intermediate gear member, and rotates the main valve body and the sub valve body at 90°.
A drive for the main valve body in which a toothed portion that is rotated to fully open or fully close is formed in a portion in the circumferential direction, and the toothed portion other than the toothed portion is formed in a toothless portion whose outer diameter is equal to or less than the root diameter of the toothed portion. A gear member and a driving gear member for the auxiliary valve element are each fixed to the input shaft, and the tooth portions of both driving gear members are connected to the teeth of the driving gear member for the auxiliary valve element and the intermediate gear member for the auxiliary valve element. The sub-valve body changes from fully closed due to engagement with
After the main valve element is rotated by 90 degrees and fully opened, the teeth of the drive gear member for the main valve element are out of phase with the intermediate gear member for the main valve element, and the two drive gear members on the input shaft are out of phase. A first locking member for the main valve body and a first locking member for the sub-valve body each having a locking portion at a position facing the toothless portion of the gear member in the axial direction are fixed, and both first locking members are fixed. Corresponding to the stop member,
When the main valve shaft is not rotated, the teeth of the drive gear member for the main valve body do not mesh with the intermediate gear member for the main valve body, at a position on the intermediate shaft facing the intermediate gear member for the main valve body in the axial direction. A second locking member for the main valve body having a locking portion that locks with the first locking member for the main valve body is fixed, and the intermediate gear member for the sub valve body and the shaft are fixed. The first locking member for the sub-valve body is engaged at a position opposite in the direction when the sub-valve shaft is not rotated when the tooth portion of the driving gear member for the sub-valve body does not mesh with the intermediate gear member for the sub-valve body. 1. An opening/closing device for a rotary valve with a sub-valve, characterized in that a second locking member for a sub-valve body, which has a locking portion that locks together with a locking portion, is fixed.