초록 ▼

A spraying gun includes a gun body, a control valve, and a nozzle head. The control valve includes a valve body, an adjusting switch, a rotation knob, and a container. Thus, the water from the gun body is injected through the inlet flush hole of the valve body and the inlet flush bore of the adjusti

A spraying gun includes a gun body, a control valve, and a nozzle head. The control valve includes a valve body, an adjusting switch, a rotation knob, and a container. Thus, the water from the gun body is injected through the inlet flush hole of the valve body and the inlet flush bore of the adjusting switch into the receiving space of the container to stir and mix with the detergent, and the water and detergent mixture is injected through the outlet injection bore of the adjusting switch and the outlet injection hole of the valve body into the nozzle head, so that the water is mixed with the detergent in the container exactly and completely, thereby enhancing the washing effect of the spraying gun.

대표청구항 ▼

The invention claimed is: 1. A spraying gun, comprising: a gun body having a water outlet port; a control valve mounted on the gun body; a nozzle head mounted on the control valve and having a water inlet port connected to the water outlet port of the gun body via the control valve; the control val

The invention claimed is: 1. A spraying gun, comprising: a gun body having a water outlet port; a control valve mounted on the gun body; a nozzle head mounted on the control valve and having a water inlet port connected to the water outlet port of the gun body via the control valve; the control valve including a valve body, an adjusting switch, a rotation knob, and a container, wherein: the valve body of the control valve has a first end formed with a water inlet hole connected to the water outlet port of the gun body, a second end formed with a water outlet hole connected to the water inlet port of the nozzle head and a mediate portion formed with a valve chamber connected between the water inlet hold and the water outlet hole; the valve body of the control valve has a first side formed with a hollow mounting portion having an inlet flush hole connected to the water inlet hole and an outlet injection hole connected to the water outlet hole; the adjusting switch of the control valve is rotatably mounted in the valve body and includes a stop disk having an inlet flush bore that is movable to connect to the inlet flush hole of the mounting portion of the valve body and an outlet injection bore that is movable to connect to the outlet injection hold of the mounting portion of the valve body; the rotation knob of the control valve is rotatably mounted on the valve body and secured to the adjusting switch to rotate the adjusting switch; the container of the control valve is mounted on the valve body and has an inside formed with a receiving space connected to the inlet flush bore and the outlet injection bore of the adjusting switch; the valve body of the control valve has a second side formed with a mounting groove connected to the valve chamber, and the rotation knob of the control valve is rotatably mounted in the mounting groove of the valve body; the rotation knob of the control valve is extended into the mounting groove of the valve body; the mounting groove of the valve body is located above the valve chamber; the adjusting switch of the control valve further includes a control stem rotatably mounted in the valve chamber of the valve body and having a first side formed with a protruding seal portion that is movable to interrupt a connection between the water inlet hole and the water outlet hole of the valve body and a second side formed with a recessed conducting portion that is movable to open the connection between the water inlet hole and the water outlet hole of the valve body; the control stem of the adjusting switch has a first end secured to the stop disk and a second end protruded outwardly from the valve chamber of the valve body and extended into the mounting groove of the valve body; wherein the mounting groove of the valve body has a substantially cylindrical peripheral wall located above the valve chamber and formed with a recessed limit portion, and the rotation knob of the control valve has a peripheral wall formed with a stop portion that is movable in and limited by the limit portion of the valve body to limit a rotation angle of the adjusting switch relative to the valve body and, wherein the limit portion of the valve body is substantially elongate arc-shaped and extends successively along the cylindrical peripheral wall of the mounting groove of the valve body. 2. The spraying gun in accordance with claim 1, wherein the rotation knob of the control valve is secured to the control stem of the adjusting switch to rotate the adjusting switch. 3. The spraying gun in accordance with claim 1, wherein the rotation knob of the control valve has an inside formed with an outwardly protruding connecting portion inserted into and secured to the second end of the control stem of the adjusting switch. 4. The spraying gun in accordance with claim 1, wherein the adjusting switch is rotatable to a first position where the seal portion of the adjusting switch aligns with and seals the water inlet hole of the valve body to interrupt the connection between the water inlet hole and the water outlet hole of the valve body. 5. The spraying gun in accordance with claim 4, wherein the inlet flush bore of the adjusting switch is separated from the inlet flush hole of the valve body, and the outlet injection bore of the adjusting switch is separated from the outlet injection hole of the valve body when the adjusting switch is rotatable to the first position. 6. The spraying gun in accordance with claim 4, wherein the adjusting switch is rotatable to a second position where the conducting portion of the adjusting switch partially aligns with the water inlet hole of the valve body to open the connection between the water inlet hole and the water outlet hole of the valve body. 7. The spraying gun in accordance with claim 6, wherein the inlet flush bore of the adjusting switch is separated from the inlet flush hole of the valve body, and the outlet injection bore of the adjusting switch is separated from the outlet injection hole of the valve body when the adjusting switch is rotatable to the second position. 8. The spraying gun in accordance with claim 6, wherein the adjusting switch is rotatable to a third position where the conducting portion of the adjusting switch completely aligns with the water inlet hole of the valve body to fully open the connection between the water inlet hole and the water outlet hole of the valve body. 9. The spraying gun in accordance with claim 8, wherein the inlet flush bore of the adjusting switch aligns with the inlet flush hole of the valve body, and the outlet injection bore of the adjusting switch aligns with the outlet injection hole of the valve body when the adjusting switch is rotatable to the third position. 10. The spraying gun in accordance with claim 1, wherein the mounting portion of the valve body is connected to the valve chamber. 11. The spraying gun in accordance with claim 10, wherein the stop disk of the adjusting switch is located between the valve chamber and the mounting portion of the valve body to interrupt a connection between the valve chamber and the mounting portion of the valve body. 12. The spraying gun in accordance with claim 1, wherein the valve chamber of the valve body is located between the inlet flush hole and the outlet injection hole. 13. The spraying gun in accordance with claim 1, wherein each of the inlet flush hole and the outlet injection hole is formed in a peripheral wall of the mounting portion of the valve body. 14. The spraying gun in accordance with claim 1, wherein the seal portion of the adjusting switch is substantially arc-shaped, and the conducting portion of the adjusting switch is substantially arc-shaped. 15. The spraying gun in accordance with claim 1, wherein the container of the control valve has an open top formed with a mounting section mounted in the mounting portion of the valve body.