Separating pilot-operated type water inlet valve

Abstract

A separation pilot-operated type electromagnetic water inlet valve comprises a valve body, a water inlet and a water outlet are formed in the valve body, a valve body is arranged between the water inlet and the water outlet, the valve body is arranged in a first containing cavity, and the valve body comprises a sealing gasket. The sealing gasket seals a channel between the water inlet and the water outlet through a first spring, the sealing gasket further comprises a second containing cavity communicated with the first containing cavity, the sealing gasket comprises a first part and a second part, the first part is provided with a plurality of water inlet holes, the second part is provided with a water outlet hole, and the water inlet holes are communicated with the water outlet hole. A pilot valve is arranged in the second containing cavity, a piston of the pilot valve is matched with the water outlet hole through a second spring, the water outlet hole is connected with the water outlet, the water inlet hole is communicated with the first containing cavity and the water inlet, and the water outlet hole is communicated with the second containing cavity and the water outlet.

Description

Technical Field

[0001] The utility model belongs to the technical field of water inlet valves, and in particular relates to a separation pilot type miniaturized water inlet valve. Background Art

[0002] At present, with the improvement of living standards, washing machines are used more and more widely, and they are also promoted all over the world. Due to various reasons such as water quality in various places, there are often complaints about the side holes of the water inlet valve with existing structure being blocked. Because the existing valve structure uses an integrated pilot solenoid valve, there are often abnormalities of straight water or continuous water inflow, which causes certain damage and safety hazards to users, resulting in complaints and machine withdrawal, and affecting the reputation of the washing machine manufacturer.

[0003] At the same time, due to the principle of the pilot type, the valve can only be opened after the pressure is released from the hole in the pilot component. Due to the limitations of the components of the integrated pilot solenoid valve, the activity space of the pilot component cannot be too large, and the water flow rate will be limited. In the case of relatively large flow, due to the movement of the integrated pilot structure, the gap between the hole in the pilot component and the sealing rubber core becomes smaller. When the valve core vibrates, it is easy to move downward and be attracted by the integrated pilot structure, causing the hole to close. The valve flow suddenly decreases, resulting in a certain amount of water not entering the washing machine within a specific period of time, affecting the washing effect. Summary of the invention

[0004] The utility model aims to solve the deficiencies and defects of the prior art, improve it by changing the structure, solve the sudden change of the flow rate of the valve while ensuring the existing requirements, and solve the problem of being able to meet customer needs when a large flow rate is required.

[0005] The basic concept of the technical solution adopted in this utility model is:

[0006] A separate pilot electromagnetic water inlet valve comprises a valve body, the valve body is provided with a water inlet and a water outlet, a valve is provided between the water inlet and the water outlet, the valve is arranged in a first cavity, the valve comprises a sealing gasket, the sealing gasket relies on a first spring to seal the passage between the water inlet and the water outlet, and also comprises a second cavity communicating with the first cavity, the sealing gasket comprises a first part and a second part, the first part is provided with a plurality of water inlet holes, the second part is provided with a water outlet hole, the second cavity has a pilot valve, the piston of the pilot valve relies on a second spring to cooperate with the water outlet hole, the water outlet hole is connected to the water outlet, the water inlet hole communicates the first cavity and the water inlet, and the water outlet hole communicates the second cavity and the water outlet. When it needs to be opened, the pilot valve is energized, the valve core moves up, and the water flows from the water inlet through the water inlet hole into the first cavity, and then into the second cavity, and then from the second cavity into the water outlet through the water outlet hole. During the process, when the water flows through the water inlet hole, a pressure difference will be generated between the water inlet and the first cavity. Under the effect of this pressure difference, the valve is opened, and the water inlet and the water outlet are connected. By setting the pilot valve part to the second cavity independent of the valve, the piston movement range of the pilot valve is not constrained by the valve, and the vibration of the valve under large flow conditions will not affect the opening and closing of the water outlet, so it can meet customer needs when a large flow is required.

[0007] As a preferred embodiment of the utility model, a first sealing gasket frame is provided on the first part, and the first sealing gasket frame has an overflow hole communicated with the water inlet hole.

[0008] As a preferred embodiment of the present utility model, a second sealing gasket frame is provided on the second part, and the water outlet hole is provided on the second sealing gasket frame.

[0009] As a preferred embodiment of the present invention, the first part and the second part are integrally formed, and the first part has a circle of elastic bending parts.

[0010] As a preferred implementation of the present utility model, the first spring is a conical spring.

[0011] As a preferred embodiment of the utility model, the piston is provided with a rubber head, and the rubber head matches with the water outlet.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By setting the pilot valve part to a second chamber independent of the valve, the piston movement range of the pilot valve is not restricted by the valve, and the vibration of the valve under large flow conditions will not affect the opening and closing of the water outlet, thereby meeting customer needs when a large flow rate is required.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 It is a cross-sectional schematic diagram of the present invention.

[0017] Figure 2 yes Figure 1 A partial enlarged schematic diagram of .

[0018] Figure 3 A top view of the sealing gasket is shown in FIG.

[0019] Figure 4 for Figure 2 Schematic diagram of the cross section. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0021] like Figures 1 to 4 As shown, a separate pilot electromagnetic water inlet valve comprises a valve body 1 , on which a water inlet 11 and a water outlet 12 are arranged, and a valve 2 is arranged between the water inlet 11 and the water outlet 12 .

[0022] The valve 2 is disposed in the first cavity 13. The valve 2 comprises a sealing gasket 21, and the sealing gasket 21 seals the passage between the water inlet 11 and the water outlet 12 by means of a first spring 3. In this embodiment, the first spring 3 is a conical spring.

[0023] The sealing pad 21 includes a first portion 211 and a second portion 212 . The first portion 211 and the second portion 212 are integrally formed. The first portion 211 has a circle of elastic bending portion 2 a .

[0024] The first portion 211 is provided with a plurality of water inlet holes 21 a and a first sealing ring frame 4 , and the first sealing ring frame 4 has an overflow hole 41 communicating with the water inlet holes 21 a .

[0025] The second portion 212 further comprises a second cavity 14 communicating with the first cavity 13 . A second sealing gasket frame 5 is disposed on the second portion 212 . A water outlet hole 51 is disposed on the second sealing gasket frame 5 .

[0026] The second cavity 14 has a pilot valve 6 therein, the piston 61 of the pilot valve 6 cooperates with the water outlet hole 51 by means of a second spring 62, the water outlet hole 51 is connected to the water outlet 12, the water inlet hole 21a connects the first cavity 13 and the water inlet 11, and the water outlet hole 51 connects the second cavity 14 and the water outlet 12.

[0027] The piston 61 has a rubber head 3 , and the rubber head 3 matches with the water outlet 51 .

[0028] When it needs to be opened, the pilot valve is energized, the valve core moves up, and the water flows from the water inlet through the water inlet hole into the first cavity, and then into the second cavity, and then from the second cavity into the water outlet through the water outlet hole. During the process, when the water flows through the water inlet hole, a pressure difference will be generated between the water inlet and the first cavity. Under the effect of this pressure difference, the valve is opened, and the water inlet and the water outlet are connected. By setting the pilot valve part to the second cavity independent of the valve, the piston movement range of the pilot valve is not constrained by the valve, and the vibration of the valve under large flow conditions will not affect the opening and closing of the water outlet, so it can meet customer needs when a large flow is required.

Claims

1. A separate pilot electromagnetic water inlet valve, comprising a valve body, the valve body being provided with a water inlet and a water outlet, a valve being provided between the water inlet and the water outlet, the valve being provided in a first cavity, the valve comprising a sealing gasket, the sealing gasket sealing a passage between the water inlet and the water outlet by means of a first spring, characterized in that: It also includes a second cavity communicated with the first cavity, the sealing gasket includes a first part and a second part, the first part is provided with several water inlet holes, the second part is provided with a water outlet hole, the second cavity is provided with a pilot valve, the piston of the pilot valve cooperates with the water outlet hole by means of a second spring, the water outlet hole is connected to the water outlet, the water inlet hole connects the first cavity and the water inlet, and the water outlet hole connects the second cavity and the water outlet.

2. A separate pilot-operated electromagnetic water inlet valve according to claim 1, characterized in that: A first sealing gasket frame is arranged on the first part, and the first sealing gasket frame has an overflow hole communicated with the water inlet hole.

3. A separate pilot-operated electromagnetic water inlet valve according to claim 1, characterized in that: A second sealing gasket frame is arranged on the second part, and the water outlet hole is arranged on the second sealing gasket frame.

4. A separate pilot-operated electromagnetic water inlet valve according to claim 1, characterized in that: The first part and the second part are integrally formed, and the first part has a circle of elastic bending part.

5. The separation pilot electromagnetic water inlet valve according to claim 1, characterized in that: The first spring is a conical spring.

6. A separate pilot-operated electromagnetic water inlet valve according to claim 1, characterized in that: The piston is provided with a rubber head, and the rubber head matches with the water outlet hole.

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