CN115929952A - Pressure reducing valve - Google Patents

Abstract

The invention relates to the technical field of pressure reducing valves, and discloses a pressure reducing valve, which includes a screw and an adjusting screw, both of which are installed on an adjusting compass, and a positioning rod is installed at the lower end of the adjusting screw, and the An elastic washer, a secondary pressure plate, a third O-ring, a secondary diaphragm and a second O-ring are installed between the positioning rod and the adjusting screw disk, and the first and secondary bonnet rubber pads and The second and second bonnet rubber pads, the first and second bonnet rubber pads are located at the lower end of the second and second bonnet rubber pads, and the second and second bonnet rubber pads pass through a plurality of waterway plugs and adjusting screw disks Detachable fixed connection. The present invention has a good appearance, the valve port is smooth and free of burrs, and the working temperature of the present invention is minus 160 degrees. The present invention can reduce the pressure from 1.59 MPa to 2.41 MPa to 2000 Pa to 3000 Pa, and the maximum pressure can be reduced to 2.41 MPa. The pressure of Pa is reduced to 2000 Pa to 3000 Pa, and 2000 Pa to 3000 Pa is a more suitable pressure, which is convenient for normal use.

Description

a pressure reducing valve

technical field

The invention relates to the technical field of pressure reducing valves, in particular to a pressure reducing valve.

Background technique

The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to keep the outlet pressure automatically stable. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of decompression. Then rely on the adjustment of the control and regulation system to balance the fluctuation of the post-valve pressure with the spring force, so that the post-valve pressure remains constant within a certain error range. The existing pressure reducing valve has poor aesthetic appearance, and the valve port often has burrs, which further affects the working effect of the pressure reducing valve, and a pressure reducing valve is proposed.

Contents of the invention

The pressure reducing valve proposed by the invention solves the problems in the background technology.

In order to achieve the above object, the present invention adopts the following technical solutions:

A pressure reducing valve, including a screw and an adjusting screw rod, the screw and the adjusting screw rod are installed on the adjusting compass, a positioning rod is installed at the lower end of the adjusting screw disc, and an elastic washer is installed between the positioning rod and the adjusting screw disc , the secondary platen, the third O-ring, the secondary diaphragm and the second O-ring, the lower end of the positioning rod is equipped with the first and second bonnet rubber pads and the second and second bonnet rubber pads, and the first and second bonnet rubber pads are installed. The first and second bonnet rubber pads are located at the lower end of the second and second bonnet rubber pads, and the second and second bonnet rubber pads are detachably and fixedly connected to the adjusting screw disk through a plurality of waterway plugs. A secondary spring, a fourth O-ring, a main housing, a fifth O-ring and a secondary pull rod are arranged between the bonnet rubber pad and the positioning rod.

Preferably, a wave pad is provided between the screw and the adjusting compass.

Preferably, a long cover and a vacuum nozzle are installed on the adjusting screw.

Preferably, a first O-ring is arranged between the adjusting screw and the adjusting compass.

Preferably, a sixth O-ring is arranged between the water channel plug and the rubber gasket of the second and second stage valve caps.

Preferably, the screws are M6X18 screws.

Preferably, the size of the first O-ring is 7.5X1.5, the size of the second O-ring, the third O-ring and the fourth O-ring are 4.8X1.8, and the fifth O-ring The size is 7X1.5.

The beneficial effects of the present invention are: take the main shell to check the appearance, install the first O-ring of the water channel plug into the main shell and tighten it, apply a little silicone grease evenly in the Φ7 bearing hole, and assemble the secondary pull rod into the main shell , the secondary tie rod, the secondary bonnet pad, the secondary tie rod, and the first O-ring are installed in the main shell, and the secondary gasket, the second O-type, the secondary diaphragm, and the third O-ring are shown in the figure The type ring and the secondary pressure sheet are installed in place, and then the spring washer, the secondary positioning rod, and the fourth O-shaped are screwed on, clamped to the special pneumatic clamp, and tightened with an air batch. Evenly apply a little silicone grease on the secondary positioning rod and the fourth O-ring, install the secondary spring, fix the adjusting screw, adjusting screw, and the first O-ring on the secondary positioning rod, and install the long cover on the adjustment On the screw, the vacuum nozzle hole is in the same direction as the air outlet, and the screws are cross-tightened (tightened several times).

The working temperature of the present invention is minus 160 degrees, and the present invention can reduce the pressure from 1.59 MPa to 2.41 MPa to 2000 Pa to 3000 Pa, that is, the pressure at the maximum pressure of 2.41 MPa can be reduced to 2000 Pa to 3000 Pa, And 2000 Pa ~ 3000 Pa is a more suitable pressure, which is convenient for normal use.

The invention has good appearance, and the valve port is smooth and free of burrs.

Description of drawings

Fig. 1 is a structural schematic diagram of a pressure reducing valve proposed by the present invention.

Labels in the figure: 1 screw, 2 wave pad, 3 long cover, 4 vacuum nozzle, 5 first O-ring, 6 adjusting screw, 7 adjusting screw, 8 secondary spring, 9 second O-ring, 10 positioning rod , 11 elastic gasket, 12 secondary pressure plate, 13 third O-ring, 14 secondary diaphragm, 15 fourth O-ring, 16 secondary gasket, 17 main shell, 18 fifth O-ring, 19 two Level pull rod, 20 first and second bonnet rubber pads, 21 second and second bonnet rubber pads, 22 sixth O-rings, 23 waterway plugs.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

With reference to Fig. 1, a kind of decompression valve comprises screw 1 and adjusting screw rod 6, and screw 1 and adjusting screw rod 6 are all installed on the adjusting screw disc 7, and positioning rod 10 is installed on the lower end of adjusting screw disc 7, and positioning rod 10 is connected with adjusting screw rod 7. An elastic gasket 11, a secondary pressure plate 12, a third O-ring 13, a secondary diaphragm 14 and a second O-ring 9 are installed between the discs 7, and the first and second bonnet rubber pads 20 are installed at the lower end of the positioning rod 10 And the second and second bonnet rubber pads 21, the first and second bonnet rubber pads 20 are located at the second and second bonnet rubber pads 21 lower ends, and the second and second bonnet rubber pads 21 are adjusted through a plurality of water channel plugs 23 The screw disk 7 is detachably fixedly connected, and a secondary spring 8, a fourth O-ring 15, a main housing 17, a fifth O-ring 18 and Secondary pull rod 19.

In this embodiment, a wave pad 2 is arranged between the screw 1 and the adjusting screw disk 7, a long cover 3 and a vacuum nozzle 4 are installed on the adjusting screw 6, and a first O-shaped Ring 5, a sixth O-ring 22 is arranged between the waterway plug 23 and the second and second stage bonnet rubber pads 21, the screw 1 is an M6X18 screw, the first O-ring 5 has a size of 7.5X1.5, and the second O-ring 5 The size of the type ring 9 , the third O-ring 13 and the fourth O-ring 15 is 4.8×1.8, and the size of the fifth O-ring 18 is 7×1.5.

Working principle: Take the main shell 17 to check the appearance, install the water channel plug 23 and the first O-ring 5 into the main shell 17 and tighten it, apply a little silicone grease evenly in the Φ7 bearing hole, and assemble the secondary tie rod 19 into the main shell In the body 17, the secondary pull rod 19, the secondary bonnet rubber pad, the secondary pull rod 19, and the first O-ring 5 are installed in the main housing 17, and the secondary gasket 16, the second O-shaped, The secondary diaphragm 14, the third O-ring 13, and the secondary pressure sheet are installed in place, and then the spring washer, the secondary positioning rod 10, and the fourth O-shaped are screwed on, clamped to the special pneumatic clamp, and clamped with an air batch Tighten. Evenly apply a little silicon grease on the secondary positioning rod 10 and the fourth O-ring 15, put it into the secondary spring 8, fix the adjusting screw, adjusting screw, and the first O-ring 5 on the secondary positioning rod 10, and place the The long cover 3 is installed on the adjusting screw, and the 4 holes of the vacuum nozzle are in the same direction as the air outlet, and the screws are cross-fastened and tightened several times. The working temperature of the present invention is minus 160 degrees. Pa reduced to 2000 Pa to 3000 Pa, the maximum pressure of 2.41 MPa can be reduced to 2000 Pa to 3000 Pa, and 2000 Pa to 3000 Pa is a more suitable pressure, which is convenient for normal use.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides a pressure reducing valve, includes screw (1) and adjusting screw (6), a serial communication port, screw (1) and adjusting screw (6) are all installed on regulation helicoidal disc (7), regulation helicoidal disc (7) lower extreme installs locating lever (10), install elastic washer (11), second grade clamp plate (12), third O type circle (13), second grade diaphragm (14) and second O type circle (9) between locating lever (10) and regulation helicoidal disc (7), first second grade bonnet cushion (20) and second grade bonnet cushion (21) are installed to locating lever (10) lower extreme, first second grade bonnet cushion (20) are located second grade bonnet cushion (21) lower extreme, second grade bonnet cushion (21) are through a plurality of water channels (23) and the detachable fixed connection of regulation helicoidal disc (7), be provided with second grade spring pull rod (8), fourth O type circle (15), main casing body (17), fifth O type circle (18) and second grade bonnet cushion (19) between second grade bonnet cushion (21) and locating lever (10).

2. A pressure reducing valve according to claim 1, characterised in that a wave washer (2) is arranged between the screw (1) and the adjusting screw disc (7).

3. A pressure-reducing valve according to claim 1, characterized in that the adjusting screw (6) is fitted with an elongated cap (3) and a vacuum nozzle (4).

4. A pressure reducing valve according to claim 1, characterised in that a first O-ring (5) is arranged between the adjusting screw (6) and the adjusting disc (7).

5. The pressure reducing valve according to claim 1, wherein a sixth O-ring (22) is arranged between the water channel plug (23) and the second secondary bonnet rubber gasket (21).

6. A pressure reducing valve according to claim 1, characterized in that the screw (1) is an M6X18 screw.

7. A pressure reducing valve according to claim 1, characterised in that the first O-ring (5) has a size of 7.5x1.5, the second (9), third (13) and fourth (15) O-rings have a size of 4.8x1.8 and the fifth O-ring (18) has a size of 7x1.5.

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