Sand discharging system based on negative-pressure principle for water cutting equipment

• Main Authors: JIANG ZHENHAN, CHEN BO
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2014
• Subjects: ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL; GRINDING; PERFORMING OPERATIONS; POLISHING; TRANSPORTING

The utility model discloses a sand discharging system based on a negative-pressure principle for water cutting equipment. The sand discharging system comprises a sand storage tank (7), and is characterized in that the sand storage tank (7) is a sealing tank, a gate valve (1) for discharging sand is mounted at the lower part of the sand storage tank (7), a ball valve (6) for injecting water and a non-return valve (5) for exhausting surplus gas in the sand storage tank during the water injection process are arranged at the upper part of the sand storage tank (7), one end of a water pump water inlet pipe (4) is communicated with the water inlet of a water pump (3), and the other end of the water pump water inlet pipe (4) is inserted into the sand storage tank (7); when the water pump works, the water in the sand storage tank is discharged to form negative pressure in the sand storage tank, sand-containing wastewater in a sand suction pipe (8) is sucked into the sand storage tank by the negative pressure, one end