A PUMP FOR INJECTING WATERPROOFING MATERIAL

摘要

The present invention relates to an injection pump for injecting waterproofing fluid. The injection pump includes a housing containing: two driven gears (120) rotated by being engaged with a drive gear rotating by a motor of a driving unit; a connection rod (125) coupled to a connection piece (121) that is eccentrically mounted on the top face of each of the drive gears by a pin (122); and two injectors (130) connected to the connection rod to suck in waterproofing fluid from the a waterproofing fluid tank and discharge the waterproofing fluid for injection by a piston (132) reciprocating in a cylinder (131) on which the waterproofing fluid tank is mounted, wherein the driving unit (110) is configured to drive the two driven gears (120) independently so that each of the two injectors (130) can discharge a waterproofing material individually with an increased discharge pressure in a predetermined ratio of discharge amount, and each of the driven gear, which rotates being engaged with the driving gear (111) provided in each driving unit, rotates to reciprocate the piston of a corresponding injector. Therefore, the injection pump can be universally used for injecting first and second waterproofing fluids, reduce a burden of purchasing injection pumps, and provide enhanced utility and usability.