Plunger assembly with drainage structure for high-pressure cleaning machine
By incorporating drainage channels and water guide channels into the plunger assembly, the problem of ceramic tube rupture caused by water freezing and expansion in the plunger assembly was solved, enabling normal operation in low-temperature environments and improving the equipment's low-temperature resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIEMUKA CLEANING EQUIP (ZHEJIANG) CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-12
AI Technical Summary
The plunger assembly of existing high-pressure cleaners is prone to damage in low-temperature environments due to the expansion of water as it freezes, leading to the cracking of the ceramic tube and rendering it unable to function properly.
A plunger assembly with a drainage structure was designed, including a plunger core, a ceramic tube, and a plunger screw. The plunger core is provided with a spiral drainage groove and a water baffle. Water that has frozen and expanded is discharged through the drainage groove and the water guide groove, thus avoiding damage to the ceramic tube.
It effectively prevents the ceramic tube from cracking due to the expansion of water when it freezes, ensuring the normal operation of the plunger pump and improving the low-temperature resistance of the equipment.
Smart Images
Figure CN224228847U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to accessories for high-pressure cleaners, and in particular, to a plunger assembly with a drainage structure for use in high-pressure cleaners. Background Technology
[0002] The power source inside a high-pressure washer is a plunger pump, and the plunger assembly inside the plunger pump is one of the core components. If it is damaged, it will directly cause the plunger pump to malfunction.
[0003] At low temperatures, the water inside the plunger pump is prone to freezing and expansion, causing the sleeve joint in the plunger assembly to be squeezed and rupture. Currently available high-pressure washers do not adequately address this issue with their internal plunger assemblies. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a plunger assembly with a drainage structure for a high-pressure washer, which can prevent the ceramic tube from bursting.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A plunger assembly with a drainage structure for a high-pressure washer includes a plunger core, a ceramic tube, and a plunger screw; one end of the plunger core has a columnar sleeve portion, and the ceramic tube is sleeved on the columnar sleeve portion; the end face of the columnar sleeve portion is provided with a threaded hole, and the plunger screw passes through the ceramic tube and is threadedly connected to the plunger core, pressing the ceramic tube onto the plunger core; a drainage groove is provided on the peripheral wall of the columnar sleeve portion.
[0007] Preferably, the drainage channel is spirally arranged around the central axis of the columnar sleeve.
[0008] Preferably, a water-blocking plate is fitted onto the columnar sleeve portion.
[0009] Preferably, the peripheral wall of the columnar sleeve is provided with a first annular groove that connects with the drainage groove, and the water-blocking plate is sleeved in the first annular groove.
[0010] Preferably, the water baffle has a central sleeve hole in the middle that matches the first annular groove, and the end face of the water baffle has a water guide groove that extends radially and communicates with the central sleeve hole, and the outer end of the water guide groove extends beyond the edge of the plunger core.
[0011] Preferably, the axial width of the first annular groove is greater than the thickness of the water-blocking plate.
[0012] Preferably, the plunger screw has a second annular groove at the bottom of the stud head, and a sealing ring is provided in the second annular groove.
[0013] Preferably, the inner cavity of the ceramic tube includes a sleeve section and a through-hole section, the diameter of the sleeve section is larger than that of the through-hole section, and a water passage cavity is formed between the junction of the two and the columnar sleeve portion.
[0014] Preferably, the diameter of the through-hole section is larger than the diameter of the plunger screw body.
[0015] The main technical effects of this utility model are reflected in the following aspects:
[0016] By setting up a drainage channel, when the water freezes and expands at low temperatures, the expanded part will enter the drainage channel, thus preventing the ceramic pipe from bursting.
[0017] The water baffle has a water guide groove to further facilitate drainage. Attached Figure Description
[0018] Figure 1 This is an exploded view of the plunger assembly in the embodiment;
[0019] Figure 2 This is a cross-sectional view of the plunger assembly in the embodiment;
[0020] Figure 3 This is a schematic diagram of the plunger core in the embodiment.
[0021] Reference numerals: 1. Plunger core; 11. Columnar sleeve; 111. Drainage groove; 112. First annular groove; 2. Water baffle; 21. Water guide groove; 3. Ceramic tube; 31. Through hole section; 32. Sleeve section; 4. Sealing ring; 5. Plunger screw; 51. Second annular groove. Detailed Implementation
[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.
[0023] Reference Figure 1-3 This embodiment provides a plunger assembly with a drainage structure for a high-pressure washer, including a plunger core 1, a water baffle 2, a ceramic tube 3, and a plunger screw 5.
[0024] One end of the plunger core 1 has a columnar sleeve portion 11, and a drainage groove 111 is provided on the peripheral wall of the columnar sleeve portion 11. The drainage groove 111 is spirally arranged around the central axis of the columnar sleeve portion 11.
[0025] The ceramic tube 3 is fitted onto the cylindrical sleeve portion 11; the inner cavity of the ceramic tube 3 includes 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 passage cavity is formed between the joint of the two and the cylindrical sleeve portion 11. The diameter of the through-hole section 31 is larger than the diameter of the plunger screw 5.
[0026] The end face of the cylindrical sleeve 11 is provided with a threaded hole. The plunger screw 5 passes through the ceramic tube 3 and is threadedly connected to the plunger core 1, pressing the ceramic tube 3 onto the plunger core 1. To improve the sealing performance, a second annular groove 51 is provided at the bottom of the stud head of the plunger screw 5, and a sealing ring 4 is provided in the second annular groove 51.
[0027] Preferably, the peripheral wall of the columnar sleeve portion 11 is provided with a first annular groove 112 that connects with the drainage groove 111, the middle part of the water baffle 2 has a central sleeve hole that matches the first annular groove 112, the water baffle 2 is sleeved on the first annular groove 112, and the axial width of the first annular groove 112 is greater than the thickness of the water baffle 2.
[0028] In addition, a water guide groove 21 is provided on the end face of the water baffle 2, extending radially and communicating with the central sleeve hole, and the outer end of the water guide groove 21 extends beyond the edge of the plunger core 1. With this configuration, the water in the water passage cavity can be smoothly discharged through the drain groove 111 and the water guide groove 21; when freezing occurs, the expanded part can also enter the drain groove 111 without bursting the ceramic tube 3.
[0029] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.
Claims
1. A plunger assembly with a drainage structure for a high-pressure washer, comprising a plunger core (1), a ceramic tube (3), and a plunger screw (5); one end of the plunger core (1) has a columnar sleeve portion (11), and the ceramic tube (3) is sleeved on the columnar sleeve portion (11); the end face of the columnar sleeve portion (11) is provided with a threaded hole, and the plunger screw (5) passes through the ceramic tube (3) and is threadedly connected to the plunger core (1), pressing the ceramic tube (3) onto the plunger core (1); characterized in that, A drainage groove (111) is provided on the peripheral wall of the columnar sleeve (11).
2. The plunger assembly with a drainage structure for a high-pressure washer according to claim 1, characterized in that, The drainage channel (111) is spirally arranged around the central axis of the columnar sleeve (11).
3. The plunger assembly with a drainage structure for a high-pressure washer according to claim 1 or 2, characterized in that, A water-blocking plate (2) is fitted onto the columnar sleeve (11).
4. The plunger assembly with a drainage structure for a high-pressure washer according to claim 3, characterized in that, The peripheral wall of the columnar sleeve (11) is provided with a first annular groove (112) that connects with the drainage groove (111), and the water baffle (2) is sleeved in the first annular groove (112).
5. The plunger assembly with a drainage structure for a high-pressure washer according to claim 4, characterized in that, The water baffle (2) has a central sleeve hole in the middle that is adapted to the first annular groove (112). The end face of the water baffle (2) is provided with a water guide groove (21) that extends radially and communicates with the central sleeve hole, and the outer end of the water guide groove (21) extends beyond the edge of the plunger core (1).
6. The plunger assembly with a drainage structure for a high-pressure washer according to claim 5, characterized in that, The axial width of the first annular groove (112) is greater than the thickness of the water baffle (2).
7. The plunger assembly with a drainage structure for a high-pressure washer according to claim 1, characterized in that, The plunger screw (5) has a second annular groove (51) at the bottom of the stud head, and a sealing ring (4) is provided in the second annular groove (51).
8. The plunger assembly with a drainage structure for a high-pressure washer according to claim 1, characterized in that, The inner cavity of the ceramic tube (3) includes 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 passage cavity is formed between the junction of the two and the columnar sleeve part (11).
9. The plunger assembly with a drainage structure for a high-pressure washer according to claim 8, characterized in that, The diameter of the through-hole section (31) is larger than the diameter of the plunger screw (5).