CN213298946U

CN213298946U - Precision pressure reducing valve

Info

Publication number: CN213298946U
Application number: CN202022029235.7U
Authority: CN
Inventors: 黄茂财
Original assignee: Zhejiang Hetian Pneumatic Machinery Co ltd
Current assignee: Hetian Pneumatic Co.,Ltd.
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-05-28
Anticipated expiration: 2030-09-16

Abstract

The utility model relates to an accurate relief pressure valve, including last valve gap, valve body and lower valve gap, the top of going up the valve gap is equipped with adjust knob, adjust knob is connected with adjusting spring, the adjusting spring bottom is connected with the valve rod, its characterized in that, be provided with the diaphragm between valve rod and the adjusting spring, the both ends of diaphragm respectively with the valve body inner wall connection, the diaphragm with be provided with the elastic washer between the adjusting spring, the outside cover of valve rod has the bush, be provided with the removal floater on the bush, it is connected with the pulling force rope to remove the floater. The utility model discloses a set up the cushion, avoid diaphragm and adjusting spring's direct contact, the mode through middle transmission adopts the cushion to realize promptly, reduces the damage of adjusting spring to the diaphragm.

Description

Precision pressure reducing valve

Technical Field

The utility model discloses valve technical field, concretely relates to accurate relief pressure valve.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction.

The existing pressure reducing valve transmits pressure to a diaphragm in the pressure reducing valve by means of the capacity of a medium, so that the diaphragm drives a valve rod to move to realize medium circulation or closing, the pressure transmission of the diaphragm is not rapid enough, and the durability of the diaphragm is limited after the diaphragm is used for a long time.

Disclosure of Invention

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an accurate relief pressure valve, includes upper valve cover, valve body and lower valve cover, the top of upper valve cover is equipped with adjust knob, adjust knob is connected with adjusting spring, the adjusting spring bottom is connected with the valve rod, a serial communication port, be provided with the diaphragm between valve rod and the adjusting spring, the both ends of diaphragm respectively with valve body inner wall connection, the diaphragm with be provided with the elastic washer between the adjusting spring, the outside cover of valve rod has the bush, be provided with the removal floater on the bush, it is connected with the pulling force rope to remove the floater.

The utility model discloses further set up, regulating spring's top still is provided with the spring holder.

The utility model discloses further set up, the spring washer with through bolted connection between the diaphragm.

The utility model discloses further set up, the valve body with be provided with O type sealing washer between the lower valve gap.

The utility model discloses further set up, the bush with be provided with O type sealing washer between the valve rod.

The utility model discloses further set up, the bush with be provided with sealed the pad between the valve body.

The utility model has the advantages that 1-the direct contact between the diaphragm and the adjusting spring is avoided by arranging the elastic cushion, and the damage of the adjusting spring to the diaphragm is reduced by adopting the elastic cushion in a middle transmission mode; 2-adopt the mode that removes the floater to drive the diaphragm and remove, provide an effort for the diaphragm, when the medium got into, the pulling force rope that removes the floater can be straightened because of the effect of buoyancy to remove the floater and straightened, remove the realization that the floater acted on the diaphragm after quick and shift up this moment, thereby the drive valve rod that can be quick removes, has improved the efficiency of pressure transmission, realizes that the passageway opens fast.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged view of a point a in fig. 1.

Reference numeral, 10, an upper valve cover; 20. a valve body; 30. a lower valve cover; 40. adjusting a knob; 50. adjusting the spring; 60. a valve stem; 90. a membrane; 100. an elastic washer; 200. a bushing; 300. moving the floating ball; 400. a tension rope; 500. a spring seat; 600. a bolt; 700. an O-shaped sealing ring; 800. a gasket;

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

Referring to fig. 1-2, the utility model provides a following technical scheme, a precision pressure reducing valve, including last valve gap, 10, valve body 20 and lower valve gap 30, go up the valve gap, the top of 10 is equipped with adjust knob 40, adjust knob 40 is connected with adjusting spring 50, adjusting spring 50 bottom is connected with valve rod 60, be provided with diaphragm 90 between valve rod 60 and the adjusting spring 50, diaphragm 90's both ends respectively with the wall connection in valve body 20, diaphragm 90 with be provided with spring washer 100 between the adjusting spring 50, valve rod 60's outside cover has bush 200, be provided with on the bush 200 and remove floater 300, it is connected with tensile rope 400 to remove floater 300. A spring seat 500 is further disposed above the adjusting spring 50 for fixing the spring.

Preferably, the elastic washer 100 is connected to the diaphragm 90 by a bolt 600, so as to achieve stable connection therebetween.

Preferably, an O-ring 700 is disposed between the valve body 20 and the lower bonnet 30, an O-ring 700 is disposed between the bushing 200 and the valve rod 60, a sealing gasket 800 is disposed between the bushing 200 and the valve body 20, and the O-ring 700 and the sealing gasket 800 are disposed to improve sealing performance.

The utility model avoids the direct contact between the diaphragm 90 and the adjusting spring 50 by arranging the elastic pad, and is realized by adopting the elastic pad in a middle transmission mode, thereby reducing the damage of the adjusting spring 50 to the diaphragm 90; adopt the mode that removes floater 300 to drive diaphragm 90 and remove in addition, provide an effort for diaphragm 90, when the medium got into, the pulling force rope 400 that removes floater 300 because the effect of buoyancy can be straightened to remove floater 300 and straightened, remove floater 300 and act on quick realization after diaphragm 90 and shift up this moment, thereby drive valve rod 60 that can be quick removes, has improved pressure transmission's efficiency, realizes that the passageway opens fast.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

More uses such as 10, upper valve covers; 20. a valve body; 30. a lower valve cover; 40. adjusting a knob; 50. adjusting the spring; 60. a valve stem; 90. a membrane; 100. an elastic washer; 200. a bushing; 300. moving the floating ball; 400. a tension rope; 500. a spring seat; 600. a bolt; 700. an O-shaped sealing ring; 800. gasket, etc., it is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or system comprising a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides an accurate relief pressure valve, includes upper valve cover, valve body and lower valve cover, the top of upper valve cover is equipped with adjust knob, adjust knob is connected with adjusting spring, the adjusting spring bottom is connected with the valve rod, a serial communication port, be provided with the diaphragm between valve rod and the adjusting spring, the both ends of diaphragm respectively with valve body inner wall connection, the diaphragm with be provided with the elastic washer between the adjusting spring, the outside cover of valve rod has the bush, be provided with the removal floater on the bush, it is connected with the pulling force rope to remove the floater.

2. The precision pressure reducing valve as claimed in claim 1, wherein a spring seat is further provided above the regulating spring.

3. The precision pressure reducing valve as claimed in claim 2, wherein the elastic washer is bolted to the diaphragm.

4. A precision pressure reducing valve according to claim 1, 2 or 3, wherein an O-ring seal is provided between the valve body and the lower bonnet.

5. The precision pressure reducing valve of claim 4, wherein an O-ring seal is disposed between the bushing and the valve stem.

6. A precision pressure reducing valve according to claim 1, wherein a seal is provided between the bushing and the valve body.