One-way valve with anti-adhesion structure for high-pressure cleaning machine

Abstract

The utility model provides a one-way valve with an anti-adhesion structure for a high-pressure cleaning machine. The one-way valve comprises a valve seat, a valve plate, a valve spring and a valve cover, wherein the valve cover is arranged on the valve seat in a sleeving manner; the end opening of the end, located in the valve seat, of the valve seat is in a flaring shape, and the inner wall of the flaring position is arranged to be an outwards-protruding arc-shaped face. The valve plate is arranged at the flaring in an attached mode. The valve spring is located in the valve cover, one end of the valve spring abuts against the valve plate, and the other end of the valve spring abuts against the valve cover. The utility model has the characteristic of reasonable structural design.

Description

Technical Field

[0001] This utility model relates to accessories for high-pressure cleaners, and in particular, to a one-way valve with an anti-sticking structure for use in high-pressure cleaners. Background Technology

[0002] Currently, the check valves installed at the inlet and outlet of the plunger pump in high-pressure cleaners often fail after prolonged periods of disuse due to scale buildup between the valve plate and valve seat. This problem urgently needs to be addressed. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a one-way valve with an anti-sticking structure for high-pressure cleaners, which has the characteristics of reasonable structural design.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A one-way valve with an anti-adhesion structure for use in a high-pressure washer includes a valve seat, a valve plate, a valve spring, and a valve cover; wherein, the valve cover is sleeved on the valve seat; the port of one end of the valve seat located inside the valve seat is flared, and the inner wall of the flared portion is configured as an outwardly convex arc surface; the valve plate is fitted into the flared portion; the valve spring is located inside the valve cover, and one end of the valve spring abuts against the valve plate, and the other end abuts against the valve cover.

[0006] Preferably, the side of the valve plate that contacts the valve seat is configured as a convex arc-shaped surface.

[0007] Preferably, the longitudinal section of the valve spring is W-shaped.

[0008] Preferably, one end of the inner cavity of the valve cover has a first annular groove, one end of the valve spring abuts against the first annular groove, and the other end abuts against the protruding part of the valve plate.

[0009] Preferably, a second annular groove is provided on the outer side of the valve seat, and a sealing ring is nested in the second annular groove.

[0010] Preferably, a second annular groove is provided on the outer side of the valve seat, and a convex ring is provided at one end of the valve cover, the convex ring being nested in the second annular groove.

[0011] Preferably, the inner wall of the valve cover has an annular concave shoulder, the inner diameter of which is smaller than the outer diameter of the valve plate.

[0012] The main technical effects of this utility model are reflected in the following aspects:

[0013] The valve plate and valve seat have been changed from surface contact to line contact, which effectively avoids the problem of them sticking together due to prolonged disuse.

[0014] The valve plate has a reasonable structural design and is easy to install. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the one-way valve in the embodiment.

[0016] Reference numerals: 1. Valve seat; 12. Third annular groove; 2. Valve cover; 21. First annular groove; 22. Convex ring; 23. Annular shoulder; 3. Valve plate; 31. Plate bottom; 32. Plate ring; 4. Valve spring; 5. Sealing ring. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1 This embodiment discloses a one-way valve with an anti-adhesion structure for a high-pressure cleaner, including a valve seat 1, a valve plate 3, a valve spring 4, and a valve cover 2.

[0019] The valve cover 2 is fitted onto the valve seat 1. Specifically, the valve seat 1 has a third annular groove 12 on its outer side, and one end of the valve cover 2 has a protruding ring 22, which is nested in the third annular groove 12. During installation, the valve seat 1 can be forcibly fitted onto the valve using other tooling fixtures.

[0020] The valve seat 1 has a flared port at one end inside the valve seat 1, and the inner wall of the flared port is set to be an outwardly convex arc surface.

[0021] The valve plate 3 is fitted onto the flared portion of the valve seat 1, and the longitudinal section of the valve spring 4 is W-shaped. Specifically, the valve plate 3 includes a plate base 31 and a plate ring 32. The plate base 31 is convex, and the plate ring 32 is inclined relative to the bottom surface. The outer side of the plate ring 32 is configured as a convex arc-shaped surface and fits against the flared portion of the valve seat 1.

[0022] One end of the inner cavity of the valve cover 2 has a first annular groove 21. The valve spring 4 is located inside the valve cover 2, and one end of the valve spring 4 abuts against the first annular groove 21, while the other end abuts against the outer convex surface of the bottom plate 31.

[0023] In addition, a second annular groove is provided on the outside of the valve seat 1, and a sealing ring is nested in the second annular groove. Installing it at the inlet and outlet of the pump body can improve the sealing between the sealing ring and the side wall of the inlet and outlet.

[0024] The inner wall of the valve cover 2 has an annular concave shoulder 23. The inner diameter of the annular concave shoulder 23 is smaller than the outer diameter of the valve plate 3. The annular concave shoulder 23 can limit the valve plate 3 when the water pressure is too high, thereby preventing the valve spring 4 from being over-compressed.

[0025] 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 one-way valve with an anti-sticking structure for use in a high-pressure washer, characterized in that, It includes a valve seat (1), a valve plate (3), a valve spring (4), and a valve cover (2); wherein, the valve cover (2) is sleeved on the valve seat (1); the port of the valve seat (1) located inside the valve seat (1) is flared, and the inner wall of the flared part is set as an outwardly convex arc surface; the valve plate (3) is fitted and disposed at the flared part; the valve spring (4) is located inside the valve cover (2), and one end of the valve spring (4) abuts against the valve plate (3), and the other end abuts against the valve cover (2).

2. A one-way valve with an anti-sticking structure for a high-pressure washer according to claim 1, characterized in that, The side of the valve plate (3) that contacts the valve seat (1) is configured as an outwardly convex arc-shaped surface.

3. A one-way valve with an anti-sticking structure for a high-pressure washer according to claim 1, characterized in that, The longitudinal section of the valve spring (4) is W-shaped.

4. A one-way valve with an anti-sticking structure for a high-pressure washer according to claim 3, characterized in that, One end of the inner cavity of the valve cover (2) has a first annular groove (21), one end of the valve spring (4) abuts in the first annular groove (21), and the other end abuts in the protrusion of the valve plate (3).

5. A one-way valve with an anti-sticking structure for a high-pressure washer according to claim 1, characterized in that, The valve seat (1) is provided with a second annular groove on the outside, and a sealing ring is nested in the second annular groove.

6. A one-way valve with an anti-sticking structure for a high-pressure washer according to claim 1, characterized in that, The valve seat (1) is provided with a third annular groove (12) on the outside, and a convex ring (22) is provided at one end of the valve cover (2), and the convex ring (22) is nested in the third annular groove (12).

7. A one-way valve with an anti-sticking structure for a high-pressure washer according to claim 1, characterized in that, The inner wall of the valve cover (2) has an annular concave shoulder (23), the inner diameter of which is smaller than the outer diameter of the valve plate (3).

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