ANTI-SIPHON STRUCTURE FOR TANKLESS RPESSURE FLUSHING TOILET

Abstract

An anti-siphon structure for a tankless pressure flushing toilet, that comprises: a main body, on which is disposed a water passage channel, the main body is connected to a water output end of a water supply pipe; a movable valve core set, disposed in the main body, to open or close water flowing through the water passage channel; a first check valve, connected to a water output end of the main body, a water output end of the first check valve is connected to a pressure water tank of a toilet seat; and a vacuum breaker, disposed at a side of a front end of the movable valve core set, and is connected to the water passage channel. A second check valve is disposed at the water input end of the main body.

Claims

1. An anti-siphon structure for a tankless pressure flushing toilet, comprising: a main body, on which is disposed a water passage channel, the main body is connected to a water output end of a water supply pipe; a movable valve core set, disposed in the main body, to open or close water flowing through the water passage channel; a first check valve, connected to a water output end of the main body, a water output end of the first check valve is connected to a pressure water tank of a toilet; and a vacuum breaker, disposed at a side of a front end of the movable valve core set, and is connected to the water passage channel.

2. The anti-siphon structure for a tankless pressure flushing toilet as claimed in claim 1, wherein the movable valve core set includes a mandrel disposed in the main body, one end of the mandrel is disposed a connection ring, a spring is disposed between one end of the connection ring and the main body, and a tight seal ring is disposed on the other end of the connection ring, to open and close water flowing through the water passage channel.

3. The anti-siphon structure for a tankless pressure flushing toilet as claimed in claim 2, wherein an end cover is disposed at one end of the main body located at a water input end of a water input channel, the spring is disposed between the end cover and the connection ring, the tight seal ring is disposed around an outer rim of the connection ring, and a water stop pad is lock tightly to the connection ring through a bolt.

4. The anti-siphon structure for a tankless pressure flushing toilet as claimed in claim 3, wherein a water output end of the first check valve is connected to a water passage tube, a water output end of the water passage tube is connected to a pressure water tank, and an open ring and a nut is disposed between a water passage section and the pressure water tank.

5. The anti-siphon structure for a tankless pressure flushing toilet as claimed in claim 4, further comprising: a second check valve, disposed at a water input end of the main body to prevent water from flowing backward.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The related drawings in connection with the detailed descriptions of the present invention to be made later are described briefly as follows, in which:

[0021] FIG. 1 is an exploded view of anti-siphon structure for a tankless pressure flushing toilet according to the present invention;

[0022] FIG. 2 is a schematic diagram of anti-siphon structure for a tankless pressure flushing toilet in an application according to the present invention; and

[0023] FIG. 3 is a schematic diagram of anti-siphon structure for a tankless pressure flushing toilet in another application according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0024] The purpose, construction, features, functions and advantages of the present invention can be appreciated and understood more thoroughly through the following detailed descriptions with reference to the attached drawings.

[0025] Refer to FIGS. 1 to 3 respectively for an exploded view of anti-siphon structure for a tankless pressure flushing toilet according to the present invention; a schematic diagram of anti-siphon structure for a tankless pressure flushing toilet in an application according to the present invention; and a schematic diagram of anti-siphon structure for a tankless pressure flushing toilet in another application according to the present invention.

[0026] As shown in FIGS. 1 to 3, the present invention provides an anti-siphon structure for a tankless pressure flushing toilet, comprising: a main body 10, a movable valve core set 20, a first check valve 30, and a vacuum breaker 50. Wherein, the main body 10 is disposed a water passage channel 11, and the main body 10 is connected to a water output end of a water supply pipe. The movable valve core set 20 is disposed in the main body 10, to open or close water flowing through the water passage channel 11. The first check valve 30 is connected to a water output end of the main body 10, a water output end of the first check valve 30 is connected to a pressure water tank of a toilet. The vacuum breaker 50 is disposed at a side of a front end of the movable valve core set 20, and is connected to the water passage channel 11. A second check valve 90 is disposed at a water input end of the main body 10, to prevent water from flowing backward.

[0027] The movable valve core set 20 includes a mandrel 21 disposed in the main body 10, one end of the mandrel 21 is disposed a connection ring 22, a spring 23 is disposed between one end of the connection ring 22 and the main body 10. A water stop pad 24 is disposed on the other end of the connection ring 22, to open and close water flowing through the water passage channel 11. In an embodiment of the present invention, an end cover 12 is disposed at one end of the main body 10 located at a water input end of a water input channel. The spring 23 is disposed between the end cover 12 and the connection ring 22, and the tight seal ring 26 is disposed around an outer rim of the connection ring 22, The water stop pad 24 is connected and locked tightly to the connection ring 22 through a bolt 25.

[0028] In an embodiment of the present invention, a water output end of the first check valve 30 is connected to a water passage tube 60, a water output end of the water passage tube 60 is connected to a pressure water tank. An open ring 70 and a nut 80 is disposed between a water passage section and the pressure water tank.

[0029] Summing up the above, the present invention provides an anti-siphon structure for a tankless pressure flushing toilet, comprising: a main body 10, a movable valve core set 20, a first check valve 30, and a vacuum breaker 50. The first check valve 30 is disposed at a water output end of the anti-siphon structure, and is connected to a water input end of the pressure water tank, to prevent the water in the pressure water tank from flowing backward to the water supply pipe, to cause contamination to the water. The vacuum breaker 50 is disposed at a water input end of the anti-siphon structure, and it can be used to suck in air when negative pressure is produced in the water supply pipe. The movable valve core set 20 is disposed in the anti-siphon structure, and a spring 23 is disposed in the movable valve core set 20. When no water is supplied in the water supply system, the spring 23 pushes the mandrel 21 to move, to make water stop pad 24 to close the water passage channel 11, to prevent water from flowing through, and the flowing backward of dirty water. When water is supplied in the water supply pipe, the water pressure produced is greater than the action force of the spring 23, such that the water stop pad 24 is pushed open by the water pressure, to allow water to flow through the water passage channel 11.

[0030] The above detailed description of the preferred embodiment is intended to describe more clearly the characteristics and spirit of the present invention. However, the preferred embodiments disclosed above are not intended to be any restrictions to the scope of the present invention. Conversely, its purpose is to include the various changes and equivalent arrangements which are within the scope of the appended claims.