Structure for switching flow of fluid in a fluid-conveying system

• US 6,675,834 B1
• Filed: 02/11/2002
• Issued: 01/13/2004
• Est. Priority Date: 02/11/2002
• Status: Expired due to Fees

• Current Assignee: Hung-Lin Lai
• Original Assignee: Hung-Lin Lai
• Inventors: Lai, Hung-Lin
• Primary Examiner(s): FOX, JOHN C
• Application Number:
  US10/071,652
• Time in Patent Office: 701 Days
• Field of Search: 137/625.42, 137/625.47, 137/864
• US Class Current: 137/625.47
• CPC Class Codes: F16K 11/0873 the plug being only rotatable around one spindle
• CPC Class Codes: Y10T 137/86871 Plug
• CPC Class Codes: Y10T 137/87724 For valve having a ball head

Abstract

A structure is designed to switch the flow of fluid in a fluid conveying system. The structure includes two fluid-discharging pipes connected one to end, a valve slot formed at the juncture of the two fluid-discharging pipes, a fluid-admitting pipe fastened to the valve slot, and a ball valve rotatably disposed in the valve slot such that the ball valve can be turned by a valve knob to control the flow of fluid into the two fluid-discharging pipes from the fluid-admitting pipe.

Claims

1. A structure for switching flow of fluid in a fluid-conveying system comprising:

a first fluid-discharging pipe;

a second fluid-discharging pipe connected end to end with said first fluid-discharging pipe;

a valve slot located at the juncture of said first fluid discharging pipe and said second fluid-discharging pipe such that said valve slot is comprised of and defined by a top wall, a bottom wall, an inner side wall, an outer side wall, a left side wall, and a right side wall whereby said valve slot is comprised of, in said top wall thereof, a receiving hole, in said outer side wall thereof, a fastening hole for fastening a fluid-admitting pipe, in said left side wall thereof, a first outlet in communication with said first fluid-discharging pipe, and in said right side wall thereof, a second outlet in communication with said second fluid-discharging pipe, said first outlet and said second outlet being located alternately;

a ball valve rotatably disposed in said valve slot in conjunction with a first washer and a second washer, with said second washer being located between said first outlet and said second outlet, said ball valve comprising a T-shaped duct which is comprised of a one-way channel and a two-way channel, said ball valve having an inner end whereby said inner end forms a communication space along with said inner side wall of said valve slot; and

a valve knob comprised of a knob and a stem which is fastened at a top end to said knob and is received in said receiving hole of said top wall of said valve slot such that said stem is fastened at a bottom end to said ball valve, thereby enabling said ball valve to be turned by said knob such that said one-way channel of said ball valve is joined with said communication space, and such that a closed side of said ball valve is joined with said first washer to block said fluid-admitting pipe so as to prevent fluid from flowing into said first fluid discharging pipe and said second fluid-discharging pipe from said fluid-admitting pipe, said ball valve capable of being turned by said knob in such a manner that said one-way channel of said ball valve is aligned and joined with said first outlet, and such that one end of said two way channel of said ball valve is aligned and joined with said fluid admitting pipe, and such that another end of said two-way channel of said ball valve is in communication with said second outlet via said communication space, thereby enabling fluid to flow into said first fluid-discharging pipe and said second fluid-discharging pipe from said fluid-admitting pipe at the same time, said ball valve still capable of being turned by said knob in such a manner that said one-way channel of said ball valve is in communication with said fluid admitting pipe, and such that one end of said two-way channel is in communication with said first fluid-discharging pipe via said first outlet, and such that another end of said two-way channel of said ball valve is prevented from being in communication with said second fluid discharging pipe by said second washer and said closed side of said ball valve, thereby preventing fluid from flowing into said second fluid-discharging pipe via said communication space and said second outlet from said fluid-admitting pipe.