JPH0445043Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a gauge handle type pressure reducing valve in which a pressure gauge for displaying fluid pressure on the output side is attached to a pressure setting handle.

[Prior Art] The inventors of the present invention developed a gauge handle type pressure reducing valve in which a pressure gauge for displaying fluid pressure on the output side is rotatably attached to a pressure setting handle. Proposed by No. 140728.

The previously proposed pressure reducing valve has a pressure gauge rotatably attached to the handle, which eliminates the installation space for the pressure gauge, but the pressure gauge does not rotate even when the handle is rotated. Although it has the advantage that the scale is easy to read, it lacks consideration for the relationship between the pressure gauge and the pressure reducing valve.
It may be necessary to install a pressure reducing valve in consideration of the orientation of the pressure gauge.

[Problem to be solved by the invention] The problem to be solved by the invention is to provide a gauge handle type pressure reducing valve that is easy to install.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a supply valve seat and a discharge valve seat in a passage that communicates an output port with a supply port and a discharge port, and a valve seat that opens and closes these valve seats. A supply valve body, a discharge valve body, a displacement member for driving these valve bodies, a feedback chamber partitioned by the displacement member to which fluid pressure on the output side is fed back, and a pressure regulating spring are compressed. In a pressure reducing valve equipped with a pressure regulating chamber and a handle that rotates to adjust the biasing force of a pressure regulating spring and set the fluid pressure on the output side, the pressure reducing valve slides and rotates with respect to the pressure reducing valve. The handle is movably assembled, and a lock piece on the handle side, and the handle is configured to
A pressure gauge that is assembled to the handle and is slidable and rotatable with respect to the handle and the pressure reducing valve and displays fluid pressure on the output side, and a pressure gauge that faces the lock piece and slides to engage and release the lock piece. The pressure gauge is provided with a lock piece that locks and releases the handle by the lock piece, and a lock piece on the pressure gauge side. It is characterized by having a lock piece that locks and releases the relative rotation of the.

[Operation] After installing the pressure reducing valve, rotate the pressure gauge to a position where the display is easy to read, and then rotate the handle to adjust the biasing force of the pressure regulating spring to adjust the fluid pressure on the output side to the pressure regulating spring. Set the pressure according to the setting biasing force.
In this case, since the pressure gauge and the handle can rotate relative to each other, even if one rotates, the other remains stationary.

Therefore, since there is no need to consider the orientation of the pressure gauge beforehand, the pressure reducing valve can be easily installed.

After adjusting the orientation of the pressure gauge and the biasing force of the pressure regulating spring, when the handle and pressure gauge are slid relative to the pressure reducing valve, the locking pieces provided thereon engage and lock their positions. Therefore, even if you accidentally touch the pressure gauge or handle, its orientation and set pressure will not change.

If you slide the pressure gauge after the pressure gauge and handle are locked, the pressure gauge and handle will be unlocked by the lock piece, so you can change the direction of the pressure gauge even after the handle is locked, and the pressure gauge can be moved in the opposite direction. When the handle is slid in the opposite direction, the locking piece engages and locks into the handle again.

[Embodiment] Figures 1 to 4 show a first embodiment of the present invention, and this gauge handle type pressure reducing valve has a pressure reducing valve 1.
and a pressure gauge 2 that displays the output pressure of the pressure reducing valve.

The valve body 4 of the pressure reducing valve 1 has a pressure fluid supply port P, an output port A, and a mounting hole for a retainer 5, and a supply valve seat 6 is formed in a passage that communicates the ports P and A. The supply valve element 7, which opens and closes the seat 6, airtightly slides in the valve chamber formed in the retainer 5 screwed into the mounting hole, and is moved in the direction of closing the valve seat 6 by the biasing force of the return spring 8. energized.

The bonnet 10, which is attached to the valve body 4 by an appropriate means, can be attached to a panel 12 by means of a mounting nut 11 screwed into a screw on the lower part of the outer periphery. The circumferential grooves 13 and 14 are provided with radial locking pieces 15 on the outer periphery of the top wall, and a diaphragm 17 serving as a displacement member between the valve body 4 and the valve body 4 provides a feedback chamber 18 on the side opposite to the feedback chamber 18 on the valve body side. Pressure control chamber 1
9, and the feedback chamber 18 communicates with the output port A through a feedback passage 20.

Diaphragm presser 17 of the diaphragm 17
a has a pressure fluid discharge port EA and a chamber 18;
A discharge valve seat 21 is formed in a passage that communicates with the pressure regulating chamber 19, and the pressure regulating chamber 19 communicates with the outside through a bleed hole 22. A discharge valve body 23 that opens and closes the discharge valve seat 21 is fixed to the supply valve body 7, and these valve bodies 7, 23 hold the valve seats 6, 21 together when the diaphragm 17 is in the neutral position shown. Associated with closure.

A handle 25 that covers the bonnet 10 has a pair of locking pieces 2 that lock in the circumferential grooves 13 and 14 on the lower side of the peripheral wall.
The lock pieces 27, . . . facing the lock pieces 15, . . . are provided on the inner wall, and the lock pieces 28, .
26 is locked in the circumferential groove 13 in the state shown on the left in FIG.
In the state on the right side of FIG. 1 in which the locking pieces 26, 26 are locked at
5 and 27 are unlocked and the bonnet 10
It can be rotated freely against.

The handle 25 is provided with an adapter nut 29 that rotates together with the handle 25 and a pressure regulating screw 30, and a pressure regulating nut 31 that can only move forward and backward with respect to the bonnet 10 is attached to the threaded portion at the tip of the pressure regulating screw 30. are screwed together, and the pressure regulating nut 31 and the diaphragm 17
A pressure regulating spring 32 is compressed between the shell and the shell. The gauge mounting member 33, which is airtightly inserted into the pressure adjustment screw 30, has a rectangular tip that connects to the pressure adjustment nut 3.
By passing through a hole of the same shape formed in the first housing 31a, rotation relative to the pressure regulating nut 31 is prevented.

A memory ring 35 is attached to the top wall 25a of the handle.
The pressure gauge 2 is inserted so as to be slidable in the axial direction, and the pressure gauge 2 is rotatable with respect to the mounting portion 2a and is inserted into the engagement holes 36, 36 of the mounting member 33.
The mounting member 3
A pressure guide hole 38, which transmits the output pressure to the pressure gauge 2, communicates with the feedback chamber 18.

The memory ring 35 is attached to the top wall 25 of the handle.
The pressure gauge 2 includes a flange 40 that comes into contact with the lock piece 41, and a lock piece 41 on the inner surface of the peripheral wall.
8, . . . and lock pieces 43, . . . facing the lock pieces 41, . (see left side of Figure 1),
It is released by pulling out the handle 25 (first
(See figure on the right).

Next, the operation of the first embodiment will be described.

The pressure reducing valve 1 is attached to the panel 12 by means of a mounting nut 11.
After installation, when the handle 25 is pulled out slightly and the locking piece 26 is locked in the circumferential groove 14, the locking pieces 15 and 27 are unlocked and the memory ring 35 is pulled out together with the handle 25. At this time, the lock pieces 28 and 42 and 41 and 43 are also unlocked. In this case, the pressure gauge 2 is not pulled out due to the engagement between the pins 37, 37 and the engagement holes 36, 36.

In this state, when the memory ring 35 is rotated,
Because the pressure gauge 2 rotates together with the ring 35 due to the sliding resistance of the O-ring 44 provided between the pressure gauge 2 and the pressure gauge 2, it is possible to orient the gauge 2 to a position where the scale is easy to see. Hold it down and rotate only the memory ring 35, and set the indicator needle 4.
5 to the scale of the fluid pressure to be set on the pressure gauge 2.

Therefore, when installing the pressure reducing valve 1, there is no need to consider the orientation of the pressure gauge 2.

When the pulled-out handle 25 is rotated, the adapter nut 29 and the pressure regulating screw 30 rotate together, and the pressure regulating nut 31 advances and retreats, thereby causing the pressure regulating spring 3 to move forward and backward.
The fluid pressure of the output port A can be set to a desired pressure by adjusting the biasing force of No. 2. This pressure setting is extremely easy since it is only necessary to align the needle of the pressure gauge 2 at hand with the indicator needle 45 of the memory ring.

After setting the fluid pressure of output port A, handle 25
When the memory ring 35 is returned to its original state, the handle 25, pressure gauge 2, and memory ring 35 are locked in their positions by the lock pieces 15 and 27, 28 and 42, and 41 and 43.

When rotating the pressure gauge 2 after locking the handle 25, etc., press the pressure gauge 2 slightly to overcome the fluid pressure to unlock the lock pieces 28 and 42 and rotate it to the desired position. When the rear press is released, it will be locked again.

The operation of setting the fluid pressure of the output port A to a pressure corresponding to the set biasing force of the pressure regulating spring 32 after setting the biasing force of the pressure regulating spring 32 is the same as that of a well-known pressure reducing valve, so a detailed explanation will be given here. Omitted.

When replacing pressure gauge 2, supply port P
And remove the pressure air from output port A, and then remove the handle 2.
5, and pull out the pressure gauge 2, memory ring 35, and mounting member 33 together, and remove the pins 37, 37 from the engagement holes 36, 36, the pressure gauge 2 can be replaced, and a new pressure gauge can be inserted. Then assemble in reverse order.

FIG. 5 shows a second embodiment of the present invention, in which the adapter nut of the second embodiment is formed of half nuts 50, 50, and the pressure gauge 51 is attached to the mounting portion 51.
a is rotatably and slidably inserted into the recess of the pressure adjusting screw 52, and the mounting hole 51b is hermetically and slidably fitted into the mounting member 54, and the flange 53 of the pressure adjusting screw 52 is inserted into the flange 53 of the pressure adjusting screw 52. By locking the enlarged diameter portion 56 to the half nuts 50, 50 into which the grooves 55, 55 are fitted, the axially pulling out is prevented and the half nuts 5 are attached to the pressure adjusting screw 52.
0 and 50 are integrated by being attached to the handle 25.

In the second embodiment, when the handle 25 is rotated, the nuts 50, 50 are rotated and the pressure gauge 51 is rotated.
also tries to rotate, but the gauge 51 and mounting member 5
The resistance of the O-ring 57 between the two holes is increased to prevent its rotation.

The other configurations and operations of the second embodiment are the same as those of the first embodiment, so the same reference numerals are given to the main parts in the drawings, and detailed explanations will be omitted.

[Effects of the Invention] The gauge handle type pressure reducing valve of the present invention allows the pressure gauge to be directed to a desired position after installation, so the pressure reducing valve can be easily installed.

In addition, by providing a lock piece on the handle that locks the rotation of the pressure gauge and pressure reducing valve separately, the pressure gauge and handle can be locked, so even if you accidentally touch them, their positions will not change. There is no.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of the first embodiment of the present invention showing the states before and after the handle is pulled out, Fig. 2 is a plan view of the same, Fig. 3 is a front view of the pressure gauge, and Fig. 4 is the memory. FIG. 5 is a partially vertical front view of the ring, showing a main part of the second embodiment of the present invention. 1...Pressure reducing valve, 2,51...Pressure gauge, 6...
...Supply valve seat, 7...Supply valve body, 15, 27, 2
8, 41, 42, 43...Lock piece, 17...Diaphragm, 18...Feedback chamber, 19...
...Pressure regulation chamber, 21...Discharge valve seat, 23...Discharge valve body, 25...Handle, 32...Pressure regulation spring, P...
...Supply port, A...Output port, EA...Exhaust port.

Claims (1)

[Scope of claim for utility model registration] Output port A is connected to supply port P and discharge port EA
A supply valve seat 6 and a discharge valve seat 2 in a passage communicating with
1, a supply valve body 7 and a discharge valve body 23 for opening and closing these valve seats 6 and 21, a displacement member 17 for driving these valve bodies 7 and 23, and said displacement member 17.
A feedback chamber 18 to which fluid pressure on the output side is fed back, a pressure regulating chamber 19 in which a pressure regulating spring 32 is compressed, and a pressure regulating spring 1
In the pressure reducing valve 1, the pressure reducing valve 1 is equipped with a handle 25 that adjusts the urging force of the pressure reducing valve 9 to set the fluid pressure on the output side. and a lock piece 15 on the handle 25 side, the handle 25 is assembled to the handle 25 and is slidable and rotatable with respect to the handle 25 and the pressure reducing valve 1, and the output side a pressure gauge 2, 51 that displays the fluid pressure of the pressure gauge 2, 51, and a lock piece 27 that faces the lock pieces 15, . , . . . and lock pieces 28, . . . on the side of the pressure gauges 2, 51.
It is provided with lock pieces 42, . . . , which are opposed to . , a gauge handle type pressure reducing valve.