CN205331783U

CN205331783U - Sight glass trap with safety head

Info

Publication number: CN205331783U
Application number: CN201521002782.9U
Authority: CN
Inventors: 孙瑶
Original assignee: Dalian Dihua Energy Saving Technology Co Ltd
Current assignee: Dalian Dihua Energy Saving Technology Co Ltd
Priority date: 2015-12-07
Filing date: 2015-12-07
Publication date: 2016-06-22
Anticipated expiration: 2025-12-07

Abstract

The utility model provides a sight glass trap with safety head which mainly is: be equipped with the internal thread on the sight glass hole in the sight glass outside, its external screw thread with the sight glass clamping ring links to each other, and the external screw thread of the internal thread of sight glass clamping ring and safety head double -screw bolt part meshes mutually, and this safety head comprises double -screw bolt subtotal end cover part even as an organic whole, and the double -screw bolt part is established at the sight glass downtheholely, and the end cover is partial to be established outside the sight glass hole, is equipped with the rotary mechanism of rotation safety head on the end cover. The diameter of safety head end cover equals the external diameter of sight glass clamping ring. The utility model discloses though the structure is simple, can increase the reliability that the sight glass trap used, reduce injury and loss of property to the people to a certain extent. Can make the sight glass trap be used for high -pressure steam pipe net, enlarge application range, make high -pressure steam pipe net's control also actually change.

Description

Visor drain valve with safety head

Technical field this utility model relates to a kind of drain valve, particular with the drain valve of visor。

Background technology is current, and visor drain valve can intuitively observe steam-water separation situation in steam pipe system because of it, therefore all uses visor drain valve in many steam pipe systems。Visor drain valve kind is a lot, but it is substantially on drain valve housing, is provided with the evagination visor shell that axis is vertical with fluid running route, visor hole it is provided with in visor shell, visor hole is provided with the safety glass visor sheet vertical with its axis, being connected with valve pocket inside this visor sheet, outside is connected with natural environment。Its weak point is: although people have done a lot of improvement such as explosion-proof, anti-tamper on visor sheet, but it is glass after all, voltage endurance capability is limited, the accidental damages such as explosion can be there is unavoidably, and these valves are all mounted in on the pipeline of pressure, once burst, personnel can be damaged by steam with pressure or condensed water, and property is brought about great losses。Due to disadvantages mentioned above, make to apply with the drain valve of visor to be restricted, be only used on low pressure steam pipe network。

Summary of the invention the purpose of this utility model is in that to provide the visor drain valve with safety head of a kind of safe and reliable, applied range。This utility model is mainly on the visor hole outside existing visor drain valve visor sheet and is provided with the safety head of visor hole closing。

Particular content of the present utility model is as follows: drain valve housing is provided with the evagination visor shell that axis is vertical with fluid running route, visor hole it is provided with in visor shell, visor hole is provided with the safety glass visor sheet vertical with its axis, visor hole outside this visor sheet is provided with female thread, it is connected with the external screw thread of visor pressure ring, and the female thread of visor pressure ring is meshed with the external screw thread of safety head, this safety head is made up of the shaft being connected as a single entity and end cap portion, threaded portion is located in visor hole, end cap portion is located at outside visor hole, end cap is provided with the rotating mechanism rotating safety head, it can be cylinder or the prism that groove or projection can also be provided with annular knurl。Preferably, the diameter of safety head end cap is equal to the external diameter of visor pressure ring。

Under conventional sense, safety head is arranged in the outer openings of drain valve visor hole, glass vision panel is closed。When drain valve duty checked by needs, rotate the rotating mechanism on safety head, safety head is taken off and namely may be viewed by, after seeing, safety head is turned round again。Once the explosion of drain valve visor, safety head can stop major part pressurized vapor to be leaked by this hole, reduces the injury to people and property loss, strives for emergency repair time to people simultaneously。

This utility model compared with prior art has the advantage that

Though 1, structure is simple, but the security reliability that visor drain valve uses can be increased, one is avoided that external object directly clashes into visor sheet, it is two when visor sheet accidental damage, the steam overflowed and condensed water can major part be stopped by safety head, not only reduce the injury to personnel and property loss, but also try to gain time precious to one for accident treatment。

2, visor drain valve can be made for the higher steam pipe system of pressure, expand actualization of use scope and control。

3, safety head can also prevent dust and dirt from it being polluted, the cleaning of protection visor, it is simple to viewing。

Accompanying drawing explanation

Fig. 1 is that this utility model uses state broken section simplified schematic diagram。

Fig. 2 is the A direction view of Fig. 1。

Detailed description of the invention uses in state broken section simplified schematic diagram at the visor drain valve with safety head shown in Fig. 1, drain valve housing 1 is provided with the evagination visor shell 2 that axis is vertical with fluid running route, visor hole it is provided with in visor shell, visor hole is provided with vertical with its axis and that diameter is corresponding safety glass visor sheet 3, visor hole outside this visor sheet is provided with female thread, it is threadeded with the external screw thread of visor pressure ring 4, and the female thread of visor pressure ring is meshed with the external screw thread of safety head 5 shaft, this safety head is made up of the shaft being connected as a single entity and end cap portion, shaft is located in visor hole, end cap portion is located at outside visor hole, the diameter of safety head end cap is equal to the external diameter of visor pressure ring。End cap is provided with the rotating mechanism rotating safety head, and it is groove 6, as shown in Figure 2。The pad 7,8 that external diameter is same, internal diameter is identical with visor pressure ring internal diameter separately it is provided with in visor sheet both sides。

Claims

1. the visor drain valve with safety head, drain valve housing is provided with the evagination visor shell that axis is vertical with fluid running route, visor hole it is provided with in visor shell, visor hole is provided with the glass visor vertical with its axis, it is characterized in that: the visor hole outside this visor is provided with female thread, it is connected with the external screw thread of visor pressure ring, and the female thread of visor pressure ring is meshed with the external screw thread of safety head shaft, this safety head is made up of the shaft being connected as a single entity and end cap portion, shaft is located in visor hole, end cap portion is located at outside visor hole, end cap is provided with the rotating mechanism rotating safety head。

2. the visor drain valve with safety head according to claim 1, it is characterised in that: the diameter of safety head end cap is equal to the external diameter of visor pressure ring。