CN110715085A - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN110715085A CN110715085A CN201910602868.1A CN201910602868A CN110715085A CN 110715085 A CN110715085 A CN 110715085A CN 201910602868 A CN201910602868 A CN 201910602868A CN 110715085 A CN110715085 A CN 110715085A
- Authority
- CN
- China
- Prior art keywords
- valve
- housing
- pressure reducing
- recess
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a pressure reducing valve which is easy and convenient to assemble. The pressure reducing valve has: a valve seat member (31) which is provided in the recess (23) of the housing (2) and which is provided with a through hole (37); a rod (32) which is inserted into the through hole (37) and has a valve body part (322) capable of adjusting the clearance with the through hole (37), namely, the valve opening; a flow orifice plate (33) connected to the stem (32); a pressure regulating spring (4) having one end abutting against the flow orifice plate (33); and a pressing member (5) that abuts against the other end of the pressure-regulating spring (4), wherein the pressure-reducing valve is provided with a screw-threaded member (6) that is screwed into the housing (2), wherein the valve seat member (31) and the pressing member (5) are fixed to the housing (2) by the screw-threaded member (6), and wherein the valve body (322) closes the through hole (37) such that one side and the other side of the valve seat member (31) are divided into a primary pressure space (R1) and a secondary pressure space (R2), respectively.
Description
Technical Field
The present invention relates to a pressure reducing valve for adjusting secondary pressure on an outflow side.
Background
A pressure reducing valve for adjusting the secondary pressure on the outflow side so that the pressure of the supplied water to the downstream side is always constant is provided in the water supply pipe of the hot water toilet seat cleaning device. For example, a pressure reducing valve used in a water supply pipe disclosed in patent document 1 includes a housing having a fluid inlet side and a fluid outlet side divided by a wall portion, the wall portion being provided with a through hole connecting the fluid inlet side and the fluid outlet side, a rod being inserted into the through hole from the fluid inlet side of the housing, and a valve body portion capable of closing the through hole being provided on the fluid inlet side of the rod. A flow orifice plate is disposed on the case outlet side to partition a space in a direction perpendicular to the stem, the flow orifice plate is connected to the stem insertion side end portion, and the flow orifice plate is biased toward the stem side by a pressure regulating spring. When the space on the flow outlet side of the case becomes high pressure, the flow orifice plate deforms to oppose the biasing force of the pressure regulating spring, and the stem moves together with the deformation, so that the opening degree of the through hole is reduced by the valve body portion, thereby restricting the fluid flow rate and reducing the pressure of the fluid flowing out.
Further, as a pressure reducing valve for natural gas, there is also a pressure reducing valve disclosed in patent document 2. The pressure reducing valve is provided with a recess in a case, a valve seat member separate from the case is prepared, a stem is inserted from one side into an opening portion of the valve seat member, and a stem insertion side end portion is connected to a flow orifice plate to constitute a valve operating unit. The valve operating unit is disposed in the housing recess, and the cover member is fixed to the housing at a plurality of positions by bolts in a state where the pressure regulating spring is sandwiched between the flow orifice plate and the cover member.
[ patent document 1 ] Japanese patent laid-open No. 2007-148465 (page 6, FIG. 1)
[ patent document 2 ] Japanese patent laid-open No. 2005-227860 (page 8, FIG. 8)
In the pressure reducing valve of patent document 1, since the case wall portion functions as a valve seat of the valve body portion at the peripheral edge portion of the through hole, it is necessary to form an opening portion for attaching the stem and an opening portion for attaching the flow rate orifice plate on both sides of the case wall portion, and prepare a cover member for closing each opening portion, which causes a problem of complicated structure.
In the pressure reducing valve of patent document 2, since the valve seat member is prepared separately from the casing, the valve operating unit, the pressure regulating spring, and the lid member may be arranged in this order with respect to the casing recess, and one opening portion or one lid member for mounting various members is sufficient, and a simple structure can be obtained.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object thereof is to provide a pressure reducing valve which is easy to assemble.
In order to solve the above problem, a pressure reducing valve according to the present invention includes:
a valve seat member provided in the recess of the housing and having a through hole; a rod inserted through the through hole and having a valve body portion capable of adjusting a gap with the through hole, that is, adjusting a valve opening; a flow orifice plate connected to the stem; one end of the pressure regulating spring is abutted with the flow orifice plate; and a pressing member abutting against the other end of the pressure regulating spring,
the pressure reducing valve includes a screw member screwed to the housing, the valve seat member and the pressing member are fixed to the housing by the screw member, and the through hole is closed by the valve body portion so that one side and the other side of the valve seat member are divided into a primary pressure space and a secondary pressure space, respectively.
According to this feature, the respective constituent members of the pressure reducing valve can be fixed to the housing by screwing the screwing member to the housing, and therefore, the pressure reducing valve can be easily assembled.
Preferably, the pressure reducing valve is characterized in that the valve seat member is pressed against an inner surface of the recess of the housing via the pressing member by the screw member.
Thus, the valve seat member is pressed and fixed to the inner surface of the recessed portion of the housing by the pressing member only by the screwing operation of the screw members, that is, the valve seat member is pressed to the inner surface of the recessed portion of the housing by the pressing member in a state where the screw members are fixed to the housing, and therefore, the assembly of the pressure reducing valve can be easily performed. In addition, since the valve seat member and the pressing member can be fixed to the housing without using a member for fixing them, the entire size can be reduced.
Preferably, a sealing member for partitioning the primary pressure space and the secondary pressure space is provided between the valve seat member and the housing.
Accordingly, the fluid leakage between the primary pressure space and the secondary pressure space can be prevented.
Preferably, a peripheral edge portion of the flow orifice plate is clamped in a sealed state between the valve seat member and the pressing member.
Accordingly, the flow orifice plate can be fixed in a sealed state by the valve seat member and the pressing member, and therefore, the flow orifice plate can be easily provided without fixing the flow orifice plate to the valve seat member by fixing with a gasket or a bolt, fixing by welding, or the like.
Preferably, the valve seat member is provided with a communication hole for communicating the secondary pressure space with an outlet port provided in the housing.
Thus, the flow path for communicating the secondary pressure space and the outlet can be simply configured.
Preferably, the female screw portion on the inner periphery of the screw member is screwed with the male screw portion on the outer periphery of the housing.
Accordingly, the housing can be made compact.
Preferably, the valve seat member has an engaged portion that engages with an engaging portion provided in the recess of the housing.
Accordingly, the valve seat member can be positioned in the circumferential direction with respect to the recess of the housing by the engagement of the engaging portion and the engaged portion.
Drawings
Fig. 1 is a perspective view showing a pressure reducing valve according to embodiment 1 of the present invention.
Fig. 2 is an exploded perspective view showing a pressure reducing valve according to embodiment 1.
Fig. 3 is a sectional view a-a of fig. 1.
FIG. 4 (a) is a longitudinal sectional view taken along the axial direction of the inflow tube part, and (b) is a longitudinal sectional view taken along the axial direction of the outflow tube part.
Fig. 5 is a bottom view showing the housing.
Fig. 6 (a) is a perspective view of the inner panel as viewed from above, and (b) is a perspective view of the inner panel as viewed from below.
Fig. 7 is a perspective view of the valve operating unit.
Fig. 8 is a B-B sectional view of fig. 7.
Fig. 9 (a) is a vertical sectional view showing a state in which the inner plate is fixed to the housing, (b) is a vertical sectional view showing a state in which the valve operating unit is disposed in the housing from the state (a), and (c) is a vertical sectional view showing a state in which the pressure regulating spring, the pressing member, and the screw member are fixed to the housing.
Fig. 10 is a cross-sectional view C-C of fig. 9 (b).
Fig. 11 is a perspective view showing a pressure reducing valve according to embodiment 2 of the present invention.
Description of reference numerals:
1a pressure reducing valve; 2, a shell; 3a valve operating unit; 4, a pressure regulating spring; 5a pressing member; 6 a screwing member; 6e a female threaded portion; 8 inner plates; 9 a sealing member; 21 an inflow port (inflow port); 22 an outflow port (outflow port); 23a recess; 23b upper surface (inner surface); 24, 25 projected strip portions (engaging portions); 26 a male thread portion; 31a body (valve seat member); 31A extension (engaged portion); 31b communicating flow paths (communicating holes); 32 rods; 33 flow orifice plate; 33b a sealing part; 35 a recess; 37 through holes; 39 projected strip portions (engaged portions); 50 a pressing member; 100 pressure reducing valves; 322 a valve body portion; r1 primary pressure space; r2 secondary compression space.
Detailed Description
The following describes a mode for implementing the pressure reducing valve according to the present invention, based on an embodiment.
[ example 1 ]
A pressure reducing valve according to embodiment 1 will be described with reference to fig. 1 to 10.
Fig. 1 is a pressure reducing valve 1 according to embodiment 1 of the present invention. The pressure reducing valve 1 is provided in a water supply pipe in a warm water toilet seat device. In example 1, a strainer, a check valve, a water stop valve 7, a pressure reducing valve 1, a heat exchanger, a flow rate adjusting valve, a nozzle, and the like are disposed in the water supply pipe from the upstream side, and the pressure reducing valve 1 is used for adjusting the pressure so that the fluctuating water pressure of the water supplied from the water supply pipe is constant. The pressure reducing valve 1 includes an inlet port 21 for supplying water from an upstream side and an outlet port 22 for allowing the pressure-regulated water to flow out to a downstream side, and a water stop valve 7 is attached to an upper portion thereof.
As shown in fig. 2 and 3, the pressure reducing valve 1 is mainly composed of a housing 2, a valve operating unit 3, a pressure adjusting spring 4, a pressing member 5, and a screw member 6.
First, the structure of the case 2 will be described. The housing 2 has: an inflow tube part 2A having an inflow port 21 therein; an outflow tube part 2B having an outflow port 22 therein; and a base portion 2C having a recess 23 formed therein, the recess 23 forming a downwardly open substantially cylindrical space into which the valve operating unit 3 can be inserted.
Fig. 4 (a) is a longitudinal sectional view along the axial direction of the inflow tube portion 2A, and the housing 2 is formed with a flow path 2A extending horizontally from the inflow port 21, and a recess 2b opened to the upper side is formed at an end of the flow path 2A. A flow path 2c extending in the vertical direction is formed below the recess 2b, and the lower end of the flow path 2c communicates with the recess 23.
The water stop valve 7 is an electromagnetic valve having a valve portion 7a that is movable in the vertical direction, and is connected to the upper portion of the recess 2b of the housing 2 in a sealed state by a bolt N1, and the valve portion 7a is moved vertically within the recess 2b, whereby the open state and the closed state of the flow path 2a and the flow path 2c can be switched (see fig. 2 and 3).
Fig. 4 (B) is a longitudinal sectional view along the axial direction of the outlet pipe portion 2B, and a flow path 2d extending in the vertical direction from the end of the horizontally extending outlet port 22 is formed in the housing 2, and the lower end of the flow path 2d communicates with the concave portion 23. That is, the inflow port 21 and the outflow port 22 communicate through the channels 2a, 2c, 2d, the recess 2b, and the recess 23. Further, an annular groove 23c is formed on the upper surface 23b of the recess 23 (the bottom surface of the recess 23) so as to surround the opening of the flow path 2 d. In addition, a male screw portion 26 is formed on the outer peripheral surface of the base portion 2C of the housing 2 on the lower end side.
As shown in fig. 5, the inner peripheral surface 23a of the concave portion 23 is disposed on one side (left side in the drawing) of the central axis, and the elongated protrusions 24 and 24 (engaging portions) protruding inward and rightward from the inner peripheral surface 23a of the concave portion 23 are disposed in parallel, and the elongated protrusions 25 and 25 (engaging portions) protruding inward and forward and backward from the inner peripheral surface 23a of the concave portion 23 are disposed on the other side (right side in the drawing) of the central axis in the inner peripheral surface 23a of the concave portion 23.
Referring to fig. 3, the inner panel 8 is fixedly attached to the upper surface 23b of the recess 23. Specifically, as shown in fig. 6, the inner panel 8 is a plate member formed in a T-shape in plan view and having a base portion 81 and a protruding piece portion 82 protruding rearward from the base portion 81, and the protruding piece portion 82 is provided with a hole 8a penetrating in the plate thickness direction. An annular protrusion 8b fitted with a groove portion 23c (fig. 4 (b)) is formed around the hole 8a on the upper surface of the inner panel 8, an annular recess 8c opening downward is formed in the vicinity of the hole 8a on the lower surface of the inner panel 8 (on the side of the base 81), and the hole 8a and the annular recess 8c communicate with each other through a bottomed connecting groove 8 d. A seal groove 8e is formed in the lower surface of the inner panel 8 so as to surround the hole 8a, the annular recess 8c, and the coupling groove 8d, and an annular seal member 9 is fitted into the seal groove 8e (see fig. 2 and 3).
The inner plate 8 is fixedly attached to the housing 2 by welding in a state in which the groove portion 23c formed on the upper surface 23b of the recess 23 is fitted to the annular protrusion 8b, and in this state, the hole 8a of the inner plate 8 communicates with the flow passage 2d of the housing 2 (see fig. 3). That is, the inner plate 8 constitutes a part of the housing 2.
In the inner panel 8, the annular protrusion 8b is fitted to the groove portion 23c, the left side surface 81a of the base 81 is brought into contact with the end surfaces 24a of the protruding portions 24, and the protruding piece portion 82 is disposed between the protruding portions 25, whereby the inner panel 8 can be accurately disposed with respect to the recessed portion 23, and welding can be performed in this state, so that assembly and welding work of the housing 2 and the inner panel 8 are simple (see the two-dot chain line portion in fig. 5).
Next, the valve operating unit 3 will be described. As shown in fig. 7 and 8, the valve operating unit 3 is mainly composed of a main body 31 (valve seat member), a stem 32, and a flow orifice plate 33. The main body 31 is formed with a concave portion 34 at the upper side and a concave portion 35 at the lower side, thereby forming a communication flow path 31a (communication hole) for communicating the concave portion 34 at the upper side with the outside and a communication flow path 31b (communication hole) for communicating the concave portion 35 at the lower side with the outside. A through hole 37 penetrating vertically is formed in a partition wall portion 36 extending in the left and right direction of the main body 31 and partitioning the concave portions 34 and 35, and the concave portion 34 and the concave portion 35 communicate with each other through the through hole 37.
A groove portion 31c recessed in the inner diameter direction is formed on the outer peripheral surface of the main body 31, and an O-ring 38 is fitted in the groove portion 31 c. In addition, an extension portion 31A (engaged portion) is formed in the upper portion of the main body 31, in which the peripheral portions of the communication flow paths 31A and 31b and the through hole 37 extend upward from the other portions. In other words, the upper portion of the main body 31 is formed in a shape of a cutout leaving the extension portion 31A, and 2 protruding portions 39, 39 (engaged portions) are provided extending upward from the cutout portion. Further, a ring-shaped groove portion 31d opened downward is formed on the lower surface of the main body 31 so as to surround the periphery of the recess 35.
The rod 32 is cylindrical and extends in the vertical direction, and is inserted into the through hole 37 from the recess 34 side, with the lower end disposed in the recess 35 and the upper end disposed in the recess 34. The rod 32 is provided with a valve body 322 having a tapered surface 321 tapered toward the lower end, and the upper portion of the valve body 322 has a larger diameter than the through hole 37. The valve body 322 opens and closes the through hole 37 by bringing the tapered surface 321 into contact with the partition wall 36 constituting the through hole 37 by lowering the rod 32. That is, the partition wall portion 36 functions as a valve seat of the valve body portion 322, and the tapered surface 321 adjusts the valve opening, which is the gap between the partition wall portion 36 and the valve opening. Further, a seal ring 323 is fitted on the rod 32 above the valve body 322. The seal ring 323 engages with a step portion 34a provided at a lower portion of the recess 34. Further, an annular groove portion 324 is recessed along the circumferential direction at the lower end portion of the lever 32, and an annular protrusion 325 is formed at a position separated from the upper side of the groove portion 324.
The flow orifice plate 33 is a disk-shaped member made of a rubber member, and is attached to the lower end of the stem 32. Specifically, the lower end of the stem 32 is inserted into a through hole 33a provided in the center of the flow orifice plate 33, the annular holder 10 is disposed between the flow orifice plate 33 and the protrusion 325 of the stem 32, and the annular holder 11 is fitted into the groove 324 of the stem 32. That is, the flow orifice plate 33 is sandwiched and fixed from above and below by the holders 10 and 11 fixed to the stem 32. A sealing portion 33b that elastically deforms is formed at the peripheral edge of the flow orifice 33, and is disposed in the groove portion 31d of the main body 31.
Returning to fig. 3, the pressure regulating spring 4 is a pressing spring, is disposed between the orifice plate 33 and the pressing member 5 with the holder 11 (see fig. 8) therebetween, and applies an upward biasing force to the orifice plate 33. The pressing member 5 includes a bottomed cylindrical portion 5a having an upward U-shaped cross section, and a flange portion 5b extending from an opening-side end portion of the bottomed cylindrical portion 5a toward an outer diameter side, and the pressure regulating spring 4 is accommodated in the bottomed cylindrical portion 5 a. The flange portion 5b is formed with an annular projection 5c projecting upward slightly. The screw member 6 has a bottomed tubular shape having an upward U-shaped cross section, a through hole 6d penetrating vertically is formed in a central portion of a bottom portion 6b of the screw member 6, and a female screw portion 6e which can be screwed into the male screw portion 26 of the housing 2 is formed in a peripheral wall portion 6c of the screw member 6.
In a state where the pressure reducing valve 1 is assembled, a space between the body 31 and the recess 23 of the case 2 forms a primary pressure space R1, and a space between the recess 35 of the body 31 and the flow orifice plate 33 forms a secondary pressure space R2. The inlet port 21, the flow paths 2a and 2c, and the recess 2b communicate with each other on the upstream side of the primary pressure space R1, and the communication flow path 31a and the recess 34 communicate with each other on the downstream side of the primary pressure space R1. Further, the through hole 37 of the main body 31 communicates with the recess 34 on the upstream side of the secondary pressure space R2, and the communication flow path 31b, the hole 8a, the flow path 2d, and the outlet port 22 communicate on the downstream side of the secondary pressure space R2.
When the secondary pressure space R2 is at a high pressure, the flow orifice plate 33 deforms to oppose the biasing force of the pressure regulating spring 4, and the rod 32 moves downward, and the gap between the tapered surface 321 of the valve body 322 and the dividing wall portion 36 decreases, so that the flow rate of water is restricted, and the pressure of water flowing out from the outlet port 22 is reduced. Further, a part of the depressurized water flows from the hole 8a of the inner plate 8 into the annular recess 8c through the coupling groove 8d, and the valve body portion 322 is used as a back pressure for moving the rod 32 in a direction for expanding the opening degree of the through hole 37, so that the operation of the valve operating unit 3 is stabilized.
Next, the assembly sequence of the pressure reducing valve 1 will be described. As shown in fig. 9 (a), first, the inner plate 8 is welded and fixed to the case 2. Then, the seal groove 8e of the inner plate 8 is fitted to the seal member 9. In a state where the inner plate 8 is fixedly attached to the casing 2, the flow path 2d of the casing 2 communicates with the hole 8a of the inner plate 8.
Next, as shown in fig. 9(b), the valve operating unit 3 in which the body 31, the stem 32, and the flow orifice plate 33 are integrally assembled is inserted into the recess 23 of the case 2. When the valve operating unit 3 is inserted into the recess 23 of the housing 2, the hole 8a of the inner plate 8 communicates with the communication passage 31b of the main body 31, the annular recess 8c of the inner plate 8 communicates with the recess 34 of the main body 31, and a part of the upper end of the rod 32 is disposed in the annular recess 8 c. Further, since the recess 34 of the body 31 is closed by the inner plate 8, the seal ring 323 fitted to the rod 32 is prevented from coming out of the recess 34. Further, the O-ring 38 disposed on the outer peripheral surface (the groove portion 31c) of the main body 31 is pressed against the inner peripheral surface 23a of the recess 23.
At this time, as shown in fig. 10, the protrusions 24, 24 provided on the inner peripheral surface 23a of the recess 23 are disposed between the protrusions 39, 39 of the main body 31, and the extension 31A of the main body 31 is disposed between the protrusions 25, so that the valve operating unit 3 is positioned in the circumferential direction. When the valve operating unit 3 is inserted into the recess 23 of the housing 2, the protrusions 39, 39 of the main body 31 slide on the protrusions 24, 24 of the recess 23, and the extension 31A of the main body 31 slides along the protrusions 25, whereby the valve operating unit 3 can be inserted into the recess 23 of the housing 2 while being positioned in the circumferential direction, which simplifies the operation. In the present embodiment, the valve operating unit 3 is entirely disposed in the recess 23, but at least a part of the valve operating unit 3 may be disposed in the recess 23, and a part thereof may be projected from the recess 23 to the outside.
Next, as shown in fig. 9 (c), in a state where the pressure regulating spring 4 is disposed between the flow orifice plate 33 and the pressing member 5, the flange portion 5b of the pressing member 5 is pressed against the main body 31, and the threaded member 6 is threadedly engaged with the housing 2 in a state where the bottomed cylindrical portion 5a of the pressing member 5 passes through the through hole 6d of the threaded member 6. Thus, the flange portion 5b of the pressing member 5 is pressed toward the main body 31 by the bottom portion 6b of the screw member 6, and the main body 31 is sandwiched between the flange portion 5b of the pressing member 5 and the inner plate 8, whereby the main body 31 is positioned in the vertical direction with respect to the housing 2. At this time, the sealing portion 33b provided at the peripheral edge portion of the flow orifice plate 33 is sandwiched and pressed by the main body 31 (groove portion 31d) and the pressing member 5 (annular convex portion 5c), and the main body 31 and the pressing member 5 are connected in a sealed state.
As described above, the body 31, the stem 32, and the flow orifice plate 33 are arranged in the recess 23 of the case 2 in a unitized state as the valve operating unit 3, the pressing member 5 is fixed to the case 2 in a state in which the pressure regulating spring 4 is arranged between the flow orifice plate 33, and the body 31 is pressed by the pressing member 5 against the upper surface 23b (the inner plate 8) of the recess 23 of the case 2 in a state in which the pressing member 5 is fixed to the case 2, thereby forming the secondary pressure space R2 between the body 31 and the flow orifice plate 33.
Accordingly, since the operation of fixing the pressing member 5 to the case 2 is performed in a state where the pressure regulating spring 4 is disposed between the pressing member 5 and the flow orifice plate 33, and the operation of positioning the valve operating unit 3 with respect to the case 2 is simultaneously completed, the operation of fixing the valve operating unit 3 and the operation of fixing the pressure regulating spring 4 are not separately performed, and the valve operating unit 3 in which the body 31, the rod 32, and the flow orifice plate 33 are integrally assembled can be disposed in the recess 23 of the case 2, and the assembly of the pressure reducing valve 1 can be easily performed.
Further, a seal member 9 that partitions the primary pressure space R1 and the secondary pressure space R2 is provided between the main body 31 and the casing 2. Specifically, in a state where the pressure reducing valve 1 is assembled, the annular seal member 9 is pressed between the main body 31 and the inner plate 8 constituting the casing 2, and the seal member 9 partitions the hole 8a, the flow path 2d, and the primary pressure space R1, which communicate with the secondary pressure space R2. Accordingly, water leakage between the primary pressure space R1 and the secondary pressure space R2 can be prevented, and the sealing member 9 can be sandwiched between the main body 31 and the inner panel 8, so that the sealing property is high, and the installation of the sealing member 9 is simple.
Further, the sealing portion 33b of the peripheral edge portion of the flow orifice plate 33 is sandwiched in a sealed state between the groove portion 31d of the body 31 and the annular convex portion 5c of the pressing member 5. That is, since the flow orifice plate 33 can be fixed by the body 31 and the pressing member 5, the flow orifice plate 33 can be easily provided without fixing the flow orifice plate 33 to the body 31 by fixing with bolts, fixing by welding, or the like. Further, since the pressing force is concentrated on the annular convex portion 5c, the body 31 can be firmly sandwiched by the pressing member 5 and the case 2, and the sealing portion 33b of the orifice plate 33 is strongly sandwiched between the annular convex portion 5c and the body 31, so that the sealing property between the pressing member 5 and the body 31 is improved.
Further, the main body 31 is provided with a communication flow path 31a (communication hole) for communicating the primary pressure space R1 with the recess 34. Accordingly, even if a complicated flow path is not formed, a flow path that connects the primary pressure space R1 and the recess 34, which is a space around the rod that communicates with the through hole 37, can be simply configured.
The main body 31 is provided with a communication flow path 31b (communication hole) for communicating the secondary pressure space R2 with the outlet port 22 provided in the housing 2. Accordingly, the secondary pressure space R2 and the flow path of the outlet port 22 can be simply configured without forming a complicated flow path in the rod 32, the housing 2, and the like. Further, since the communication flow path 31a for communicating the primary pressure space R1 and the secondary pressure space R2 is also provided in the main body 31, when a problem occurs in the communication flow paths 31a and 31b, the main body 31 may be replaced, and maintenance is easy.
Further, a screw member 6 screwed with the housing 2 is provided, and the pressing member 5 is pressed to the main body 31 side by the screw member 6. Accordingly, the fixing of the pressing member 5 to the housing 2 can be completed by one screwing operation of the screwing member 6, and therefore, the assembling operation of the pressure reducing valve 1 is simpler than the fixing of the pressing member 5 to the housing 2 by a plurality of bolts. Further, it is possible to prevent a force in the rotational direction generated when the screwing members 6 are screwed from being applied to the pressure regulating spring 4 or the valve operating unit 3, and it is possible to accurately attach the pressure regulating spring 4 or the valve operating unit 3 to the housing 2.
The screw member 6 is screwed to the outer peripheral surface of the housing 2 from the outside. Specifically, the male screw portion 26 is formed on the outer peripheral surface of the housing 2, and the female screw portion 6e is formed on the inner peripheral surface of the screw member 6, so that the screw member 6 is screwed from the outside of the housing 2. Accordingly, the case 2 can be formed compactly because the recess 23 can be used in a wide range without forming a bolt portion for connecting the screw member 6 on the inner surface of the recess 23 of the case 2.
The main body 31 is formed with a projection 39 and an extension 31A that engage with projections 24 and 25 provided in the recess 23 of the housing 2. Specifically, the protrusions 24 and 24 are disposed between the protrusions 39 and 39, and the extension 31A of the main body 31 is disposed between the protrusions 25 and 25, so that the valve operating unit 3 is positioned in the circumferential direction, and therefore the valve operating unit 3 can be reliably operated.
[ example 2 ]
Next, a pressure reducing valve according to embodiment 2 will be described with reference to fig. 11. Note that the description of the same configuration as that of the above embodiment and the overlapping configuration will be omitted.
As shown in fig. 11, the pressing member 50 of the pressure reducing valve 100 according to example 2 is formed with an annular recess 50c having an L-shaped cross section, which is a cutout in the opening-side peripheral edge of the flange portion 50 b. Further, the body 310 is formed with an annular projection 311 that can be inserted into the annular recess 50 c. In the assembled pressure reducing valve 100, the sealing portion 33b at the peripheral edge of the flow orifice plate 33 is sandwiched by the annular concave portion 50c and the annular convex portion 311. Accordingly, since the pressing force is concentrated on the annular convex portion 311, the body 310 can be firmly sandwiched by the pressing member 50 and the case 2, and the sealing portion 33b of the flow orifice plate 33 is strongly sandwiched between the annular convex portion 311 of the body 310 and the annular concave portion 50c of the pressing member 50, so that the sealing property between the pressing member 50 and the body 31 is improved.
Although the embodiments of the present invention have been described above with reference to the drawings, the specific configurations are not limited to these embodiments, and modifications and additions that do not depart from the spirit and scope of the invention are also included in the invention.
For example, in the above embodiment, the pressing member 5 and the screw member 6 are illustrated as being separately configured, but the present invention is not limited thereto, and the pressing member 5 and the screw member 6 may be integrally formed. In the above embodiment, the valve operating unit 3 is pressed against the inner surface of the recess 23 when the screw members 6 are screwed and fixed to the housing 2, but the valve operating unit 3 may be fixed to the screw members 6 and the valve operating unit 3 may be disposed in the recess 23 when the screw members 6 are screwed and fixed to the housing 2.
In the above embodiment, the sealing portion 33b at the peripheral edge of the flow orifice plate 33 is sandwiched between the body 31 and the pressing member 5 in a sealed state, but the peripheral edge of the flow orifice plate 33 may be fixedly attached to the body 31 by welding bolts or the like. In this case, even if the peripheral edge portion of the flow orifice plate 33 is not sandwiched between the body 31 and the pressing member 5, the secondary pressure space can be formed.
In the above-described embodiment, the annular convex portion is provided on one of the pressing member and the valve seat member, the annular concave portion is provided on the other of the pressing member and the valve seat member, and the peripheral portion of the flow orifice plate is sandwiched between the annular convex portion and the annular concave portion. In addition, when the peripheral edge portion of the flow orifice plate is fixedly attached to the valve seat member in a sealed state, a plurality of convex portions may be provided in the circumferential direction on the pressing member or the valve seat member.
In the above embodiment, the mode in which the communication flow path 31b for communicating the secondary pressure space and the outlet port 22 is provided to the main body 31 of the valve operating unit 3 is exemplified, but the present invention is not limited to this, and a through hole may be formed along the axial direction of the rod 32, and the secondary pressure space and the outlet port 22 may be communicated with each other through the through hole.
Further, the embodiment has exemplified a mode in which the screw members 6 are screwed into the housing 2 from the outside, but the embodiment is not limited to this, and the screw members 6 may be screwed into the housing 2 by providing a female screw portion on the inner peripheral surface of the housing 2, providing a male screw portion on the outer peripheral surface of the screw members 6, and screwing the screw members 6 into the housing 2. The pressing member 5 may be fixed to the housing 2 by a fastening member such as a bolt.
In the above embodiment, the protruding portions 39 and the extended portions 31A of the main body 31 are engaged with the protruding portions 24 and 25 of the housing 2, but the present invention is not limited thereto, and the main body 31 and the concave portions 23 of the housing 2 may be fitted in a concave-convex manner. For example, a concave groove may be provided on the inner peripheral surface 23a of the concave portion 23 of the housing 2, and a protrusion capable of fitting into the concave groove may be provided on the outer peripheral surface of the main body 31.
Claims (7)
1. A pressure reducing valve, comprising:
a valve seat member provided in the recess of the housing and having a through hole; a rod inserted through the through hole and having a valve body portion capable of adjusting a gap with the through hole, that is, adjusting a valve opening; a flow orifice plate connected to the stem; one end of the pressure regulating spring is abutted with the flow orifice plate; and a pressing member abutting against the other end of the pressure regulating spring,
the pressure reducing valve includes a screw member screwed to the housing, the valve seat member and the pressing member are fixed to the housing by the screw member, and the through hole is closed by the valve body portion so that one side and the other side of the valve seat member are divided into a primary pressure space and a secondary pressure space, respectively.
2. The pressure reducing valve of claim 1,
the valve seat member is pressed against the inner surface of the recess of the housing via the pressing member by the screwing member.
3. The pressure reducing valve of claim 1,
and a sealing component for dividing the primary pressure space and the secondary pressure space is arranged between the valve seat component and the shell.
4. The pressure reducing valve of claim 1,
the peripheral edge portion of the flow orifice plate is clamped between the valve seat member and the pressing member in a sealed state.
5. The pressure reducing valve of claim 1,
the valve seat member is provided with a communication hole for communicating the secondary pressure space with an outlet port provided in the housing.
6. The pressure reducing valve of claim 1,
the female screw portion on the inner periphery of the screw member is screwed with the male screw portion on the outer periphery of the housing.
7. The pressure reducing valve according to any one of claims 1 to 6,
the valve seat member has an engaged portion that engages with an engaging portion of the recess provided in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084441.0A CN113958741A (en) | 2018-07-11 | 2019-07-05 | Pressure reducing valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-131569 | 2018-07-11 | ||
| JP2018131569A JP7094625B2 (en) | 2018-07-11 | 2018-07-11 | Pressure reducing valve |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111084441.0A Division CN113958741A (en) | 2018-07-11 | 2019-07-05 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110715085A true CN110715085A (en) | 2020-01-21 |
Family
ID=69151921
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111084441.0A Pending CN113958741A (en) | 2018-07-11 | 2019-07-05 | Pressure reducing valve |
| CN201910602868.1A Pending CN110715085A (en) | 2018-07-11 | 2019-07-05 | Pressure reducing valve |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111084441.0A Pending CN113958741A (en) | 2018-07-11 | 2019-07-05 | Pressure reducing valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7094625B2 (en) |
| CN (2) | CN113958741A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4282766A (en) * | 1978-07-25 | 1981-08-11 | Hoerbiger Ventilwerke Aktiengesellschaft | Adjusting mechanism for regulating devices |
| CN1267800A (en) * | 1999-03-23 | 2000-09-27 | Smc株式会社 | Vacuum pressure regulator |
| CN1789769A (en) * | 2004-12-14 | 2006-06-21 | 高兹派尔有限公司 | Liquid pressure regulator |
| CN1918525A (en) * | 2004-02-10 | 2007-02-21 | 株式会社京浜 | Pressure reducing valve and gas regulator |
| CN101589255A (en) * | 2007-01-25 | 2009-11-25 | 株式会社京浜 | Pressure reducing valve for gas |
| CN202418777U (en) * | 2012-02-14 | 2012-09-05 | 罗达莱克斯阀门(上海)有限公司 | Pressure regulator for gas supply system of natural gas vehicle engine |
| CN103363165A (en) * | 2012-03-27 | 2013-10-23 | 株式会社不二工机 | Reducing valve |
| CN107965582A (en) * | 2016-10-20 | 2018-04-27 | 株式会社不二工机 | Pressure reducing valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4721076B2 (en) * | 2008-07-08 | 2011-07-13 | Ｓｍｃ株式会社 | Decompressor |
| AU2010202045B2 (en) * | 2009-05-21 | 2015-02-05 | Cla-Val Company | Pressure Management Control Valve Assembly |
| JP6357114B2 (en) * | 2015-01-13 | 2018-07-11 | イーグル工業株式会社 | Capacity control valve with check valve |
| CN105840886A (en) * | 2016-06-07 | 2016-08-10 | 镇江闽乐建材有限公司 | Novel one-way valve |
| JP6429843B2 (en) * | 2016-10-20 | 2018-11-28 | 株式会社不二工機 | Pressure reducing valve |
-
2018
- 2018-07-11 JP JP2018131569A patent/JP7094625B2/en active Active
-
2019
- 2019-07-05 CN CN202111084441.0A patent/CN113958741A/en active Pending
- 2019-07-05 CN CN201910602868.1A patent/CN110715085A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4282766A (en) * | 1978-07-25 | 1981-08-11 | Hoerbiger Ventilwerke Aktiengesellschaft | Adjusting mechanism for regulating devices |
| CN1267800A (en) * | 1999-03-23 | 2000-09-27 | Smc株式会社 | Vacuum pressure regulator |
| CN1918525A (en) * | 2004-02-10 | 2007-02-21 | 株式会社京浜 | Pressure reducing valve and gas regulator |
| CN1789769A (en) * | 2004-12-14 | 2006-06-21 | 高兹派尔有限公司 | Liquid pressure regulator |
| CN101589255A (en) * | 2007-01-25 | 2009-11-25 | 株式会社京浜 | Pressure reducing valve for gas |
| CN202418777U (en) * | 2012-02-14 | 2012-09-05 | 罗达莱克斯阀门(上海)有限公司 | Pressure regulator for gas supply system of natural gas vehicle engine |
| CN103363165A (en) * | 2012-03-27 | 2013-10-23 | 株式会社不二工机 | Reducing valve |
| CN107965582A (en) * | 2016-10-20 | 2018-04-27 | 株式会社不二工机 | Pressure reducing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020009311A (en) | 2020-01-16 |
| JP7094625B2 (en) | 2022-07-04 |
| CN113958741A (en) | 2022-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8826932B2 (en) | Diverter valve | |
| JP5990566B2 (en) | Back pressure control valve with valve cartridge | |
| TWI410575B (en) | Valve structure of fluid pressure apparatus | |
| US7178553B2 (en) | Leak-resistant solenoid valves | |
| US20160305562A1 (en) | Non-return valve mechanism and one-way valve device | |
| KR20150024789A (en) | Pressure-reducing valve | |
| JP2010112539A (en) | Pressure balance type control valve | |
| JP2012172772A (en) | Mixing faucet | |
| EP1718891B1 (en) | Leak-resistant solenoid valves | |
| CA2568706C (en) | Wafer-type direct-acting valve | |
| KR102116863B1 (en) | Air Pressure Control Valve and Assembling Method Thereof | |
| CN110715085A (en) | Pressure reducing valve | |
| JP5861181B2 (en) | Mixer tap | |
| KR101881821B1 (en) | Solenoid valve | |
| JP5672637B2 (en) | Faucet device | |
| JP7237969B2 (en) | Pressure reducing valve | |
| JP6620449B2 (en) | Faucet device | |
| JP4549981B2 (en) | Fluid control equipment | |
| JP2005227861A (en) | Pressure reducing valve | |
| JP6719068B1 (en) | Pressure reducing valve and upper diaphragm addition unit used for this | |
| JP2005282636A (en) | On-off valve with relief valve function | |
| JP6679362B2 (en) | Water faucet | |
| JPS6141018Y2 (en) | ||
| JP2010116995A (en) | Pilot type back pressure valve with checking function | |
| JP3542638B2 (en) | Compound pressure regulating valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200121 |
|
| WD01 | Invention patent application deemed withdrawn after publication |