CN2138729Y

CN2138729Y - Stop valve for refrigerating pipe

Info

Publication number: CN2138729Y
Application number: CN 92221137
Authority: CN
Inventors: 陈斌; 陈刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-24
Filing date: 1992-09-24
Publication date: 1993-07-21
Anticipated expiration: 2002-09-24

Abstract

The utility model relates to a stop valve for a refrigerating pipe, characterized in that the valve body is a single-direction ball valve, and the upper end of a valve rod is provided with a starting and positioning device. The utility model has the advantages of small size, material saving, convenient operation, and reliable work, and an inlet connection pipe and an outlet connection pipe are arranged on the same axial cord, therefore, the flow resistance of the refrigerant is reduced, the refrigerating effect is enhanced, and the function of automatic fluid feeding is conveniently achieved.

Description

Stop valve for refrigerating pipe

The utility model relates to the stop valve that a kind of refrigeration system refrigerant pipe is used.

The stop valve that refrigerant pipe is used in the existing refrigeration system, all adopt the screw type valve body structure, troublesome poeration not only, open and close inconvenience, every keying once all needs to rotate tens of circles by instrument, and because the import and export at valve body two ends are taken over when not making refrigeration agent flow through valve on same axis needs through two right angle bends, thereby cause the refrigeration agent flow resistance to increase, influence refrigeration.In addition, existing screw type cuts valve and also exists volume big, uses the material expense, and must shut down shortcoming such as liquid feeding.

The purpose of this utility model is to provide a kind of simple to operate, open and close reliable, convenient and practical and refrigerant pipe stop valve that flow resistance is less.

The utility model mainly is made of valve seat, valve body, valve rod and import and export adapter, is conveniently to open and close operation, and the valve body employing non-return valve structure of this programme, and the import and export adapter is on the same axis, to reduce the refrigeration agent flow resistance, guarantee refrigeration; Another technological means of this programme is in the upper end of ball valve valve rod, is provided with the keying positioning device, ends or conducting to guarantee the reliable of ball valve.Adopt the stop valve of said structure,, simultaneously,, can finish automatic liquid feeding function easily as long as set up a valve inside in the side direction of taking over as long as make the valve rod half-twist can make valve be in the keying state.The utility model feature is that described valve body is a non-return valve, in the upper end of this ball valve valve rod, is provided with one and opens and closes positioning device.

The utility model has the advantages that easy to operate, open and close simple, reliable operation, owing to reduced the flow resistance of refrigeration agent, improved refrigeration effectively, it is little that this programme also has a volume, materials are economized, and are easy for installation and can realize advantage such as automatic liquid feeding, have good practical values.

Below, will the utility model be further described by embodiment and accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the valve body structure sectional view.

Fig. 3 is the plan view of Fig. 2.

With reference to accompanying drawing: the utility model mainly by valve seat 1, valve body 2, valve rod 3, import and export and take over 4,5 and constitute, valve body is located in the valve seat; Import and export adapter and valve seat to be tightly connected, its interface end is connected with refrigerating circuit respectively; Valve body is a non-return valve, and its conducting orifice end face is provided with seal ring 6; In the upper end of ball valve valve rod, be provided with one and open and close positioning device.The keying positioning device of present embodiment, by keying turn round 7 and restraining groove 8 constitute, opening and closing the middle part turn round has a dead slot 9 and is embedded on the bearing pin 10 in valve rod, and can do upper and lower displacement along this dead slot; Restraining groove 8 is located in the valve body of valve rod periphery, and turns round both sides with keying and match, and the reliable location when guarantee opening and closing twisted commentaries on classics the, and then drive the valve rod rotation makes the reliable conducting of ball valve or ends.During operation, if on carry opening and closing and turn round and make the valve rod half-twist can make ball valve be in conducting or cut-off state.

Claims

1, a kind of refrigerant pipe stop valve comprises valve seat (1), and valve body (2), valve rod (3), adapter (4), (5) is characterized in that valve body (2) is a non-return valve, and the valve rod upper end is provided with the keying positioning device.

2, a kind of refrigerant pipe stop valve as claimed in claim 1 is characterized in that described keying positioning device is turned round (7) by keying and restraining groove 8 constitutes.