CN203516889U

CN203516889U - Novel pressure reducing valve

Info

Publication number: CN203516889U
Application number: CN201320715081.4U
Authority: CN
Inventors: 黄燕民
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-14
Filing date: 2013-11-14
Publication date: 2014-04-02
Anticipated expiration: 2023-11-14

Abstract

The utility model discloses a novel pressure reducing valve which comprises a valve body; a first overflowing hole is axially formed in the valve body; flow guiding holes are formed in the upper part of the valve body; a valve rod is arranged at the upper part of the first overflowing hole in the valve body; a second flow hole is axially formed in the middle part of the valve rod. The novel pressure reducing valve is characterized in that the flow guiding holes are arranged in 7-9 rows, and each row of flow guiding holes are distributed circumferentially. The flow guiding holes are arranged in 7-9 rows, and meanwhile, the flow guiding holes comprise columnar sections and conical sections, so that the pressure reducing range of the pressure reducing valve is relatively wide, and the pressure reducing effect is relatively good; the end surface of a water inlet end of the valve rod is a conical surface, so that impact water flow easily enters a flow passage at the middle part of the valve rod, and does not enters a gap between the valve rod and the valve body; at the same time, the pressure reducing capability of the pressure reducing valve is not affected by the improvement.

Description

A kind of Depressure valve

Technical field

The utility model relates to a kind of valve, specifically, relates in particular to a kind of Depressure valve.

Background technique

So-called reduction valve, reduces to the outlet pressure of a certain needs by regulating by inlet pressure, and relies on the energy of medium itself, makes outlet pressure automatically keep stable valve.Traditional relief valve pod apertures is arranged on valve body, is often set to 3-5 row, and every row comprises again the pod apertures of some circumferential arrangement.Conventionally pod apertures is circular hole; Valve rod feed-water end is a plane, meanwhile, between valve body and valve rod, has gap, and this gap can lead to pod apertures.There is following drawback in above-mentioned reduction valve: the first, and because the row that pod apertures arranges is limited, reduction valve pressure relief ranges is limited; The second, the end face of valve rod feed-water end is plane, impacts current and easily by the gap between valve body and valve rod, enters pod apertures, and then enter liquid storage cylinder.

Model utility content

The problems referred to above that exist in order to solve prior art, the utility model provides the Depressure valve that a kind of pressure relief ranges is wide.

To achieve these goals, the utility model adopts following technological scheme:

A kind of Depressure valve, comprise valve body, in valve body, be axially arranged with the first flowing hole, on valve body top, be provided with pod apertures, in valve body, the top of the first flowing hole is provided with valve rod, and valve rod middle part is axially arranged with the second flowing hole, it is characterized in that, pod apertures is 7-9 row, and every row's pod apertures comprises the pod apertures of some circumferential arrangement.

Further: along water (flow) direction, pod apertures comprises column section and taper section.

Further: the end face of valve rod feed-water end is taper.

Compared to existing technology, the utlity model has following advantage:

(1) pod apertures arranges 7-9 row, and meanwhile, pod apertures comprises column section and taper section, therefore reduction valve pressure relief ranges is wider, effect of easing stress is better.

(2) end face of valve rod feed-water end is tapering surface, therefore impact the flow channels that current are easy to enter valve rod middle part, impacts current and also can not enter the gap between valve rod and valve body, and meanwhile, this improvement can not affect the reduced pressure capabilities of reduction valve.

Accompanying drawing explanation

Fig. 1 is a kind of Depressure valve structural representation.

Fig. 2 is S place enlarged view in Fig. 1.

In figure, 1-housing, 2-liquid storage cylinder, 3-valve body, 4-valve rod, 4a-spring, 4b-panel, 51-screw, 52-seal ring, 53-pressing plate, 6-pod apertures, 61-column section, 62-taper section.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Embodiment: as shown in Figure 1, 2, a kind of Depressure valve, comprise valve body 3, in valve body 3, be axially arranged with the first flowing hole, on valve body 3 tops, be provided with pod apertures 6, in valve body 3, the top of the first flowing hole is provided with valve rod 4, valve rod 4 middle parts are axially arranged with the second flowing hole, pod apertures 6 is 8 rows (can also be 7 rows or 9 rows), every row's pod apertures comprises the pod apertures of some circumferential arrangement, that is: with reference to Fig. 1, on the sidewall of hollow columnar valve body, 8 row's pod apertures are evenly set from top to bottom, and every row is for being circumferentially evenly arranged in the some pod apertures on sidewall.

Valve rod moves downward under the effect of overvoltage current, therefore can open corresponding pod apertures, carry out pressure release, (row is for counting from top to bottom for example to open first row pod apertures, lower same), according to varying in size of water flow pressure, the stroke that valve rod moves downward is not quite similar, its range is for opening the 8th row's pod apertures, with respect to traditional maximum pod apertures row, be 5 rows, the pod apertures row in the application is more, and pressure regulation ability is stronger.

In the application, along water (flow) direction, pod apertures 6 comprises column section 61 and taper section 62.

Enter the current of pod apertures first stably by column section, then enter the taper section of expansion, then enter the liquid storage cylinder of below work being set forth, water conservancy diversion process is more smooth-going.

In the present embodiment, the end face 41 of valve rod feed-water end is taper.

Impact current when acting on valve rod end face, it flows into second flowing hole at valve rod middle part along curved surface, for plane end face, taper end face is more conducive to impact passing through of current, can further not act on the gap of valve rod and valve body and flow in this gap.

Other corresponding constructions of a kind of Depressure valve herein the application being related to are done concise and to the point set forth (this part is prior art): reduction valve comprises valve body 3, be sheathed on the housing 1 on valve body and be located at the valve rod 4 coordinating with valve body in valve body, between valve body and housing, be provided with liquid storage cylinder 2, the diameter of valve inleting water end is less than the diameter of waterexit end, valve body waterexit end sets firmly panel 4b by bolt, panel is provided with osculum, the end face of described valve inleting water end is provided with seal ring 52 and pressing plate 53, seal ring 52 and pressing plate 53 are fixed on valve body 3 by screw 51, valve body 3 feed-water ends (valve body top) are provided with pod apertures, pod apertures is communicated with liquid storage cylinder, in valve rod, be provided with the second flowing hole, between division of a ci poem bar lower end and panel 4b, be provided with spring 4a, the feed-water end of valve rod is provided with back-up ring, back-up ring internal diameter coordinates formation seal structure with valve rod, back-up ring is arranged in pod apertures top.

The utility model working principle is as follows: when equipment water hydraulic pressure exceeds scope of design, impacting current impels valve rod to waterexit end, to move (action downwards), pod apertures on valve body be opened (for example opening first row pod apertures), water flows in the liquid storage cylinder between valve body and housing, thereby reaches the object of decompression, and hydraulic pressure reduces or returns to design load when following, the spring reset of compression, in reseting procedure, push valve rod and reset, pod apertures is closed, and hydraulic pressure returns to below setting value.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. a Depressure valve, comprise valve body, in valve body, be axially arranged with the first flowing hole, on valve body top, be provided with pod apertures, in valve body, the top of the first flowing hole is provided with valve rod, and valve rod middle part is axially arranged with the second flowing hole, it is characterized in that, pod apertures is 7-9 row, and every row's pod apertures comprises the pod apertures of some circumferential arrangement.

2. a kind of Depressure valve according to claim 1, is characterized in that: along water (flow) direction, pod apertures comprises column section and taper section.

3. a kind of Depressure valve according to claim 1, is characterized in that: the end face of valve rod feed-water end is taper.