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CN-224228847-U - Plunger assembly with drainage structure for high-pressure cleaning machine

CN224228847UCN 224228847 UCN224228847 UCN 224228847UCN-224228847-U

Abstract

The utility model provides a plunger assembly with a drainage structure for a high-pressure cleaning machine, which comprises a plunger core, a ceramic tube and a plunger screw, wherein one end of the plunger core is provided with a columnar sleeving part, the ceramic tube is sleeved on the columnar sleeving part, one end of the plunger core is also provided with a threaded hole, the ceramic tube is fixed on the plunger core through the plunger screw, and the peripheral wall of the columnar sleeving part is provided with a drainage groove. The utility model can avoid the ceramic tube from being burst.

Inventors

  • LIU HOUTAO
  • Shen Meifu
  • XU RONGBING

Assignees

  • 洁泥卡清洁设备(浙江)有限公司

Dates

Publication Date
20260512
Application Date
20250630

Claims (9)

  1. 1. A plunger assembly with a drainage structure for a high-pressure cleaning machine comprises a plunger core (1), a ceramic tube (3) and a plunger screw (5), wherein a columnar sleeving part (11) is arranged at one end of the plunger core (1), the ceramic tube (3) is sleeved on the columnar sleeving part (11), a threaded hole is formed in the end face of the columnar sleeving part (11), the plunger screw (5) penetrates through the ceramic tube (3) to be in threaded connection with the plunger core (1) and tightly presses the ceramic tube (3) on the plunger core (1), and the plunger assembly is characterized in that a drainage groove (111) is formed in the peripheral wall of the columnar sleeving part (11).
  2. 2. Plunger assembly with drain structure for high-pressure washer according to claim 1, characterized in that the drain groove (111) is arranged in a spiral around the central axis of the cylindrical socket part (11).
  3. 3. Plunger assembly with drainage structure for high-pressure washer according to claim 1 or 2, characterized in that the cylindrical socket part (11) is sleeved with a water deflector (2).
  4. 4. A plunger assembly with a water draining structure for a high pressure washer according to claim 3, characterized in that the peripheral wall of the cylindrical sleeve part (11) is provided with a first annular groove (112) connected with the water draining groove (111), and the water blocking sheet (2) is sleeved on the first annular groove (112).
  5. 5. The plunger assembly with the water drainage structure for the high-pressure cleaning machine according to claim 4, wherein the middle part of the water retaining sheet (2) is provided with a central sleeve hole matched with the first annular groove (112), the end surface of the water retaining sheet (2) is provided with a water guide groove (21) which extends along the radial direction and is communicated with the central sleeve hole, and the outer end of the water guide groove (21) exceeds the edge of the plunger core (1).
  6. 6. The plunger assembly with drain structure for high pressure washer according to claim 5, wherein the axial width of the first annular groove (112) is larger than the thickness of the water deflector (2).
  7. 7. Plunger assembly with drain structure for high-pressure washer according to claim 1, characterized in that the bottom of the stud head of the plunger screw (5) is provided with a second annular groove (51), in which second annular groove (51) a sealing ring (4) is arranged.
  8. 8. Plunger assembly with drainage structure for high-pressure washers according to claim 1, characterized in that the internal cavity of the ceramic tube (3) comprises a sleeve section (32) and a through hole section (31), the diameter of the sleeve section (32) is larger than that of the through hole section (31), and a water passing cavity is formed between the joint of the sleeve section (32) and the through hole section (31) and the columnar sleeve section (11).
  9. 9. Plunger assembly with drain structure for high-pressure washers according to claim 8, characterized in that the diameter of the through-hole section (31) is greater than the diameter of the shank of the plunger screw (5).

Description

Plunger assembly with drainage structure for high-pressure cleaning machine Technical Field The present utility model relates to a high pressure washer fitting, and in particular, to a plunger assembly having a drain structure for a high pressure washer. Background The power source in the high-pressure cleaning machine is a plunger pump, and a plunger component in the plunger pump is used as one of core components, if the plunger component is damaged, the plunger pump can be directly caused to work abnormally. When the air temperature is low, water in the plunger pump is easy to freeze and expand, so that a sleeved part in the plunger assembly is extruded to break. However, the existing high-pressure cleaning machine in the market cannot solve the problem well due to the internal plunger assembly. Disclosure of utility model In view of the above, it is an object of the present utility model to provide a plunger assembly having a drain structure for a high pressure washer, capable of preventing a ceramic tube from being burst. In order to achieve the above object, the technical scheme of the present utility model is as follows: A plunger assembly with a drainage structure for a high-pressure cleaning machine comprises a plunger core, a ceramic tube and a plunger screw, wherein a columnar sleeving part is arranged at one end of the plunger core, the ceramic tube is sleeved on the columnar sleeving part, a threaded hole is formed in the end face of the columnar sleeving part, the plunger screw penetrates through the ceramic tube to be in threaded connection with the plunger core and tightly presses the ceramic tube on the plunger core, and a drainage groove is formed in the peripheral wall of the columnar sleeving part. Preferably, the drainage groove is spirally arranged around the central axis of the columnar sleeving part. Preferably, the columnar sleeve joint part is sleeved with a water blocking piece. Preferably, a first annular groove connected with the drainage groove is formed in the peripheral wall of the columnar sleeving part, and the water retaining sheet is sleeved on the first annular groove. Preferably, the middle part of the water retaining piece is provided with a central sleeve hole matched with the first annular groove, the end surface of the water retaining piece is provided with a water guide groove which extends along the radial direction and is communicated with the central sleeve hole, and the outer end of the water guide groove exceeds the edge of the plunger core. Preferably, the axial width of the first annular groove is greater than the thickness of the water deflector. Preferably, a second annular groove is formed in the bottom of the stud head of the plunger screw, and a sealing ring is arranged in the second annular groove. Preferably, the inner cavity of the ceramic tube comprises a sleeving section and a through hole section, the diameter of the sleeving section is larger than that of the through hole section, and a water passing cavity is formed between the joint of the sleeving section and the through hole section and the columnar sleeving section. Preferably, the diameter of the through hole section is larger than the diameter of the shank of the plunger screw. The technical effects of the utility model are mainly as follows: By arranging the drainage groove, water is frozen and expanded when the air temperature is low, and the expanded part can enter the drainage groove, so that the ceramic tube cannot be burst; the water retaining sheet is provided with a water guide groove, further facilitating drainage. Drawings FIG. 1 is an exploded view of a plunger assembly of an embodiment; FIG. 2 is a cross-sectional view of a plunger assembly of an embodiment; fig. 3 is a schematic view of a plunger core in an embodiment. Reference numeral 1, a plunger core; 11, a columnar sleeve joint part, 111, a drainage groove, 112, a first annular groove, 2, a water retaining sheet, 21, a water guide groove, 3, a ceramic pipe, 31, a through hole section, 32, a sleeve joint section, 4, a sealing ring, 5, a plunger screw, 51 and a second annular groove. Detailed Description The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model. Referring to fig. 1 to 3, the present embodiment provides a plunger assembly having a drain structure for a high pressure washer, comprising a plunger core 1, a water blocking sheet 2, a ceramic tube 3 and a plunger screw 5. One end of the plunger core 1 is provided with a columnar sleeve joint part 11, a drainage groove 111 is arranged on the peripheral wall of the columnar sleeve joint part 11, and the drainage groove 111 is spirally arranged around the central axis of the columnar sleeve joint part 11. The ceramic tube 3 is sleeved on the columnar sleeving part 11, the inner cavity of the ceramic tube 3 comprises a sleeving s