A spray head capable of spraying continuously, comprising:
- a main body having a liquid passage with an inlet and an outlet;
- a head cap connected to the main body;
- a spray one-way valve for discharging liquid;
- an operating handle;
- a cover connected to the main body for connecting to an external bottle;
- a pump;
- a pressurization valve;
- a sucker;
- a cylinder;
- a pressure continuation spring having an upper portion and a lower portion;
- wherein,
- the liquid passage comprises a transverse passage and a vertical passage which communicate with each other, the head cap is located at the outlet of the liquid passage which forms a front end of the transverse passage, the spray one-way valve is located inside the front end of the transverse passage and is adjacent to the head cap, the pressurization valve is located inside the transverse passage to make the vertical passage communicate with the transverse passage;
- the pump is disposed inside the main body below a bottom of the vertical passage and the cover is connected to the pump, the pump has a main operating valve and a spring seat both disposed inside the pump, the main operating valve is below the spring seat, the sucker is connected to a bottom of the pump;
- the cylinder is disposed inside the main body below the transverse passage, a main piston having an outer surface and an inner surface is transversely movably disposed on the cylinder, the operating handle resists against the outer surface of the main piston, a spring is supported between the inner surface of the main piston and the cylinder so as to move the main piston forward and to resist against the operating handle, the cylinder has a through hole which communicates with the pump and the vertical passage;
- the upper portion of the pressure continuation spring is located inside the vertical passage and the lower portion of the pressure continuation spring is supported on the spring seat;
- a sleeve having a bottom is disposed inside the vertical passage and behind the transverse passage, a top of the pressure continuation spring seat is hermetically sleeved with the bottom of the sleeve;
- a pressure continuation sealing seat capable of moving up and down is disposed inside the sleeve, a pressure continuation chamber is defined on a top of the pressure continuation sealing seat, and a first small passage is formed between the pressure continuation chamber and the transverse passage, the pressure continuation spring is supported between the pressure continuation spring seat and the pressure continuation sealing seat, driving the pressure continuation sealing seat to move upward so as to continuously extrude liquid in the pressure continuation chamber out to the transverse passage.