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CN-224214339-U - Plunger pump with soft start function for high-pressure cleaning machine

CN224214339UCN 224214339 UCN224214339 UCN 224214339UCN-224214339-U

Abstract

The utility model relates to a plunger pump with soft start function for high pressure cleaner, including the pump body, locate the internal high pressure chamber of pump, low pressure chamber, air-vent valve, one side of the pump body is equipped with the installation department, set up the mounting groove on the installation department, set up runner one and runner two on the lateral wall of mounting groove, runner one communicates the low pressure chamber, runner two communicates the high pressure chamber, the mounting groove interpolation is equipped with the choke plug, circulation groove one and circulation groove two have been seted up in the choke plug, be equipped with the steel ball in the circulation groove one, be equipped with the die-ring in the mounting groove, the bottom of mounting groove has been seted up corresponding to runner one entrance and has been placed the annular, has been placed the spring in the annular, the spring passes the hole of die-ring and stretches into circulation groove one, its top butt the steel ball. The utility model can be used for low-load soft start.

Inventors

  • LIU HOUTAO
  • Shen Meifu
  • XU RONGBING

Assignees

  • 洁泥卡清洁设备(浙江)有限公司

Dates

Publication Date
20260508
Application Date
20250624

Claims (7)

  1. 1. A plunger pump with a soft start function for a high-pressure cleaning machine comprises a pump body (1), a high-pressure cavity (11), a low-pressure cavity (12) and a pressure regulating valve (13) which are arranged in the pump body (1), and is characterized in that one side of the pump body (1) is provided with a mounting part (14), the mounting part (14) is provided with a mounting groove (15), the side wall of the mounting groove (15) is provided with a first runner (16) and a second runner (17), the first runner (16) is communicated with the low-pressure cavity (12), the second runner (17) is communicated with the high-pressure cavity (11), a choke plug (2) is inserted in the mounting groove (15), a first ventilation groove (21) with a downward opening and a second ventilation groove (22) which is arranged above the first ventilation groove (21) are arranged in the choke plug (2), the first ventilation groove (21) is communicated with the first runner (16), the second ventilation groove (22) is communicated with the second runner (17), a steel ball (23) is arranged in the first ventilation groove (21), a supporting ring (15) is arranged in the mounting groove (15), and the steel ball (23) is arranged between the choke plug (2) and the choke plug (2), the diameter of the inner hole of the supporting ring is smaller than that of the steel ball (23), a placement ring groove (18) is formed in the bottom of the mounting groove (15) corresponding to the inlet of the first runner (16), a spring (19) is placed in the placement ring groove (18), the spring (19) penetrates through the inner hole of the supporting ring and stretches into the first circulating groove (21), and the top end of the spring is abutted against the steel ball (23).
  2. 2. The plunger pump with the soft start function for the high-pressure cleaning machine according to claim 1, wherein the supporting ring comprises a rubber ring (31) and a connecting seat (32) sleeved outside the rubber ring (31), the connecting seat (32) is slidably placed in the mounting groove (15), the diameter of an inner hole of the rubber ring (31) is smaller than that of the steel ball (23), and the spring (19) penetrates through the inner hole of the rubber ring (31) and stretches into the first circulating groove (21).
  3. 3. The plunger pump with the soft start function for the high-pressure cleaning machine according to claim 2, wherein the top of the connecting seat (32) is provided with a threaded hole (321), and the bottom of the choke plug (2) is in threaded connection with the threaded hole (321).
  4. 4. A plunger pump with a soft start function for a high-pressure washer according to claim 3, wherein the bottom wall of the threaded hole (321) is provided with a containing groove (322), the rubber ring (31) is placed in the containing groove (322), and the connecting seat (32) presses the rubber ring (31) against the choke plug (2).
  5. 5. The plunger pump with a soft start function for a high-pressure cleaning machine according to claim 4, wherein the rubber ring (31) is provided with a positioning ring groove (311), the bottom of the choke plug (2) is provided with a positioning insert block (24), and the positioning insert block (24) is inserted into the positioning ring groove (311) to position the rubber ring (31) relative to the choke plug (2) during assembly.
  6. 6. The plunger pump with the soft start function for the high-pressure cleaning machine according to claim 1, wherein the choke plug (2) is provided with a liquid inlet ring groove (25), the liquid inlet ring groove (25) is opposite to the second flow passage (17), and the notch of the second flow passage (22) far away from the first flow passage (21) is communicated with the liquid inlet ring groove (25).
  7. 7. The plunger pump with the soft start function for the high-pressure cleaning machine according to claim 1, wherein the top end of the choke plug (2) extends out of the mounting groove (15), an inserting hole (26) is formed in the top end of the choke plug (2), the inserting hole (26) penetrates through the choke plug (2), a rod body can be inserted into the inserting hole (26), and the choke plug (2) can be pulled out of the mounting groove (15) by pulling the rod body.

Description

Plunger pump with soft start function for high-pressure cleaning machine Technical Field The utility model relates to the field of plunger pumps, in particular to a plunger pump with a soft start function for a high-pressure cleaning machine. Background Plunger pumps are an important component of high pressure cleaners. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity, so as to realize oil absorption and pressure oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like. The plunger pump is started instantaneously to overcome a large load, and if the pump outputs full pressure directly, the motor may burn out due to excessive starting torque or cause mechanical impact to damage equipment. Therefore, a soft start structure is required to be arranged on the plunger pump, so that the starting load of the pump body is reduced, and the probability of motor burnout is reduced. Disclosure of utility model The application provides a plunger pump with a soft start function for a high-pressure cleaning machine, which can be used for soft start under low load. The application provides a plunger pump with a soft start function for a high-pressure cleaning machine, which adopts the following technical scheme: A plunger pump with a soft start function for a high-pressure cleaning machine comprises a pump body, a high-pressure cavity, a low-pressure cavity and a pressure regulating valve, wherein the high-pressure cavity, the low-pressure cavity and the pressure regulating valve are arranged in the pump body, a mounting part is arranged on one side of the pump body, a mounting groove is formed in the mounting part, a first runner and a second runner are formed in the side wall of the mounting groove, the first runner is communicated with the low-pressure cavity, the second runner is communicated with the high-pressure cavity, a choke plug is inserted into the mounting groove, a first circulation groove with a downward opening and a second circulation groove above the first circulation groove are formed in the choke plug, the first circulation groove is communicated with the first runner, the second circulation groove is communicated with the second runner, a steel ball is arranged in the first circulation groove, a supporting ring is arranged in the mounting groove, the supporting ring is located below the steel ball and between the choke plug and the first runner, the diameter of an inner hole of the supporting ring is smaller than that of the steel ball, a ring groove is formed in the bottom of the mounting groove corresponding to the first runner inlet, a spring is placed in the ring groove, the spring penetrates through the inner hole of the supporting ring groove and stretches into the first circulation groove, and abuts against the steel ball. Through adopting above-mentioned technical scheme, when the plunger pump does not start, the spring can support the steel ball on the lower notch of circulation groove two to make steel ball shutoff circulation groove two. When the plunger pump is just started, under the condition that the high-pressure cavity of the plunger pump is closed and the pressure regulating valve is reset to be closed, air and a small amount of water in the high-pressure cavity flow into the circulation groove through the second flow channel, then the air and the water can prop against the steel ball, so that the steel ball moves away from the second flow channel and is compressed under the stress of the spring, and at the moment, the air and the water can enter the first flow channel and the low-pressure cavity through the gap between the steel ball and the first flow channel. Along with the air in the plunger pump is discharged, a large amount of water is sucked, the pressure in the high-pressure cavity can be gradually increased, then the pressure of the air and water pushing the steel ball to the steel ball can be gradually increased, finally the steel ball can be propped against the supporting ring, a passage between the high-pressure cavity and the low-pressure cavity is cut off, soft start of the pump body is completed, and after the pressure is built in the pump body, the pump body works to enter a normal state. Preferably, the support ring comprises a rubber ring and a connecting seat sleeved outside the rubber ring, the connecting seat is slidably arranged in the mounting groove, the diameter of an inner hole of the rubber ring is smaller than that of the steel ball, and the spring penetrates through the inner hole of the rubber ring and stretches into the first circulating groove. Through adopting above-mentioned technical scheme, conveniently place the mounting groove with the rubber ring in, deformation displacement when can preventing the rubber ring and place. Preferably, the top of connecting seat has seted up the screw hole, the bottom threaded connection