An emulsifying device for an emulsion explosive, comprising:
- (i) an oil phase storage tank equipped with an oil phase flow rate regulating pump,
- (ii) a water phase storage tank equipped with a total water phase flow rate regulating pump,
- (iii) a multi-stage coarse emulsion mixer including:
- (a) a first stage coarse emulsion mixer equipped with:
- an oil inlet disposed at an end of the multi-stage coarse emulsion mixer, the oil inlet being configured to allow an oil phase to enter at its full proportion into the first stage coarse emulsion mixer,
- a first stage adjustment of flow rate configured to control a first part of a water phase to flow into the first stage coarse emulsion mixer,
- a first diversion port configured to laterally introduce the first part of the water phase into the first stage coarse emulsion mixer,
- a first jet hole configured to cause the first part of the water phase to spout from the first jet hole at a certain flow velocity and to laterally strike the oil phase to mix with the oil phase to form a first-stage coarse emulsion, and
- a first orifice plate configured to allow the first-stage coarse emulsion to spout from the first orifice plate and into a second stage coarse emulsion mixer,
- (b) the second stage coarse emulsion mixer equipped with:
- a second stage adjustment of flow rate configured to control a second part of the water phase to flow into the second stage coarse emulsion mixer,
- a second diversion port configured to laterally introduce the second part of the water phase into the second stage coarse emulsion mixer,
- a second jet hole configured to cause the second part of the water phase to spout from the second jet hole at a certain flow velocity and to laterally strike the first-stage coarse emulsion to mix with the first-stage coarse emulsion to form a second-stage coarse emulsion, and
- a second orifice plate configured to allow the second-stage coarse emulsion to spout from the second orifice plate and into a third stage coarse emulsion mixer,
- (c) the third stage coarse emulsion mixer equipped with:
- a third stage adjustment of flow rate configured to control a third part of the water phase to flow into the third stage coarse emulsion mixer,
- a third diversion port configured to laterally introduce the third part of the water phase:
- into the third stage coarse emulsion mixer,
- a third jet hole configured to cause the third part of the water phase to spout from the third jet hole at a certain flow velocity and to laterally strike the second-stage coarse emulsion to mix, with the second-stage coarse emulsion to form a third-stage coarse emulsion, and
- a third orifice plate,
- (d) a fourth stage coarse emulsion mixer equipped with a fourth stage adjustment of flow rate, a fourth diversion port, a fourth jet hole, and a fourth orifice plate, and
- (e) a fifth stage coarse emulsion mixer equipped with a fifth stage adjustment of flow rate, a fifth diversion port, a fifth jet hole, and a fifth orifice plate, wherein:
- every two adjacent stages of coarse emulsion mixers are connected in series, and
- a longitudinal axis through the oil inlet is transverse to each longitudinal axis through at least the first diversion port, the second diversion port, and the third diversion port, and
- (iv) a fine emulsion mixer connected to the fifth stage coarse emulsion mixer.