| 摘要 |
PROBLEM TO BE SOLVED: To provide a hoseless gun capable of maximally uniformly keeping an ejection flow rate of a viscous fluid, even if pressure of working gas changes.SOLUTION: A cylinder tank 2 of a hoseless gun 1 includes a front end side cylinder chamber 21 into which viscous fluid L is filled and a rear end side cylinder chamber 22 filled with working gas A. The hoseless gun 1 has the relationship of P3=P2-P1, where P1 denotes force added to a front end portion 501 of a valve 5 from a fluid pressure forming part 211 connected to the front end side cylinder chamber 21, P2 denotes force added to a rear end portion 502 of the valve 5 from a gas pressure forming part 221 connected to the rear end side cylinder chamber 22 and P3 denotes reaction added to the valve 5 from energizing means 53. The hoseless gun 1 is configured in such a manner that in accordance with reduction of pressure of the working gas A due to ejection of the viscous fluid L from the nozzle 4, P2-P1 (and P3) reduces and the valve 5 causes opening of a nozzle 4 to increase. |
