Pulse electromagnetic valve

Abstract

The utility model provides a pulse solenoid valve which comprises a water inlet pipeline, a water outlet pipeline and a coil assembly which are arranged on a valve body, a water inlet cavity communicated with the water inlet pipeline and a water outlet cavity communicated with the water outlet pipeline are arranged in the valve body, and a water retaining disc for separating the water inlet cavity and the water outlet cavity is arranged above the water inlet cavity. The water inlet cavity is communicated with a water retaining cavity located above the water retaining disc through a water inlet hole in the water retaining disc, the coil assembly controls connection or disconnection between the water retaining cavity and the pressure relief cavity through the valve element so as to control the up-down pressure difference of the water retaining disc, and the pressure relief cavity is communicated with the water outlet cavity. The pressure relief chamber is arranged in the pressure relief body, and the pressure relief body is integrally connected with the valve body; the pressure relief body and the valve body are integrally connected, a sealing structure at the joint of the pressure relief body and the valve body is omitted, the problem of fluid leakage at the joint is solved, and the pressure relief valve is easy to assemble, high in structural reliability and high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pulse solenoid valve. Background Art

[0002] The pulse solenoid valve is a kind of accessory used to control the outlet flow of fluid on household appliances, and is commonly used in devices such as smart toilets. The current driving method on the market basically relies on direct drive of the solenoid valve core, adopting a pilot-type solenoid valve structure. The structural features are generally more complex, and there is also the possibility of seal leakage. Similar products previously produced by the applicant usually include a valve body, a pressure relief water circuit bracket (pressure relief body), a pressure relief water circuit valve cover, an electromagnetic coil assembly, a water distribution plate assembly, a valve body end cover assembly, a water outlet pipe flow limiting module, an anti-siphon assembly, a check assembly, and a water inlet pipe one-way valve assembly. The valve body and the pressure relief water circuit bracket are set separately, which results in more structural parts and a sealing assembly needs to be set at the connection between the two, which increases the processing and assembly costs.

[0003] In order to solve the above technical problems, the applicant has designed a pulse solenoid valve, optimized the structural features of the valve body, solved the sealing problem, increased the stability of the structure and saved costs. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a pulse solenoid valve. The technical solutions adopted by this utility model are as follows:

[0005] A pulse solenoid valve comprises a water inlet pipe, a water outlet pipe and a coil assembly arranged on a valve body, wherein the valve body is provided with a water inlet chamber connected to the water inlet pipe and a water outlet chamber connected to the water outlet pipe, and a water baffle separating the water inlet chamber and the water outlet chamber is provided above the water inlet chamber, the water inlet chamber is connected to the water baffle chamber located above the water baffle via the water inlet hole on the water baffle, the coil assembly controls the conduction or blocking between the water baffle chamber and the pressure relief chamber via the valve core, thereby adjusting the upper and lower pressure difference of the water baffle, and the pressure relief chamber is connected to the water outlet pipe; the pressure relief chamber is arranged in the pressure relief body, and the pressure relief body is integrally connected to the valve body.

[0006] The device combines the pressure relief body with the valve body in its structural design, and realizes the functions of rapid switching, water discharge and water blocking through structures such as the water retaining plate and coil assembly. The design of the pressure relief body on the valve body enhances the stability of the overall system, reduces the possibility of system leakage, and reduces production and assembly costs.

[0007] Preferably, it also includes a valve cover chamber arranged in the valve body upper cover, the valve body upper cover is provided with a valve cover water inlet connected to the water retaining chamber, and a valve cover water outlet connected to the solenoid valve chamber, and the valve core is arranged in the solenoid valve chamber; the valve cover water outlet is connected to the solenoid valve chamber through a diversion pipe, and the solenoid valve chamber is connected to the pressure relief chamber through a pressure relief water inlet channel, and the coil assembly drives the valve core in the solenoid valve chamber to control the conduction or blocking between the solenoid valve chamber and the pressure relief water inlet channel; the diversion pipe, the solenoid valve chamber, the pressure relief body and the valve body are integrally connected.

[0008] When the fluid passes through the water inlet pipe, water inlet chamber, water inlet hole, water retaining chamber, valve cover chamber, diversion pipe and solenoid valve chamber in sequence, the coil is energized in the forward direction, so that the valve core overcomes the spring force to open the pilot hole, connecting the solenoid valve chamber and the pressure relief water inlet channel, and the fluid enters the pressure relief chamber. At this time, the water pressure in the water retaining chamber is less than the pressure in the water outlet chamber, the water retaining disc is pushed open, the water inlet chamber and the water outlet chamber are connected, and water starts to discharge; when the coil is energized in the reverse direction, the spring force overcomes the electromagnetic force, the pilot hole is closed, and the solenoid valve chamber and the pressure relief water inlet channel are blocked. At this time, the water pressure in the water retaining chamber is greater than the pressure in the water outlet chamber, and the water retaining disc is closed under the action of water pressure, and water discharge stops.

[0009] Preferably, the valve cover water inlet and valve cover water outlet are respectively located on both sides of the valve cover chamber, a sealing gasket is provided at the connection between the valve cover water outlet and the diversion pipe, and the valve body upper cover is sealed by ultrasonic welding so that the valve body upper cover is directly connected to the valve body, with a simple structure and high stability.

[0010] Preferably, the water retaining chamber is located higher than the water inlet chamber and the water outlet chamber, the solenoid valve chamber is located lower than the water retaining chamber, and the pressure relief chamber is located higher than the water outlet pipe; the above-mentioned height position is set so that there is a pressure difference between the water retaining chamber above the water retaining plate and the water outlet chamber below the water retaining plate, thereby realizing the opening and closing of the water retaining plate; the water flows from the water retaining chamber to the solenoid valve chamber by gravity, and the pressure relief water inlet channel extends upward relative to the solenoid valve chamber to connect with the pressure relief chamber, and then flows from the pressure relief chamber to the water outlet pipe.

[0011] Preferably, the solenoid valve cavity is connected to the pressure relief chamber through a pressure relief water inlet channel extending upward relative to the solenoid valve cavity, and the pressure relief chamber is connected to the water outlet pipe through a pressure relief water outlet channel extending downward relative to the solenoid valve cavity.

[0012] Preferably, a water outlet inner cylinder connected to the water outlet pipe is provided in the valve body, and the inner core area of ​​the water retaining plate corresponds to the upper port of the water outlet inner cylinder, so that a water inlet chamber is formed between the outside of the water outlet inner cylinder and the outer ring area of ​​the water retaining plate, and a water outlet chamber is formed between the inside of the water outlet inner cylinder and the inner core area of ​​the water retaining plate; the water inlet hole is provided in the outer ring area of ​​the water retaining plate.

[0013] Preferably, a check valve assembly is provided between the water outlet chamber and the water outlet pipe, a flow limiting assembly is provided in the water outlet pipe, and an anti-siphon assembly is provided at one end of the water outlet pipe away from the water outlet.

[0014] Preferably, a one-way valve assembly is provided at the water inlet of the water inlet pipe.

[0015] As an embodiment, the water outlet pipe includes a first water outlet pipe and a second water outlet pipe, and corresponding water outlet chambers, water retaining plates, and water retaining chambers are respectively provided in the valve body corresponding to the first water outlet pipe and the second water outlet pipe, and the pressure relief of the water retaining chamber is controlled by the first coil assembly and the second coil assembly, thereby realizing water outlet from the first water outlet pipe and the second water outlet pipe; when the water fills the solenoid valve chamber, any group of coil assemblies is passed with a positive voltage to open the pressure relief hole, and the liquid will quickly pass through the first pressure relief water inlet channel or the second pressure relief water inlet channel into the pressure relief chamber and be pressure-relieved through the pressure relief water outlet channel.

[0016] The beneficial effects of the present invention are as follows: in this device, the pressure relief chamber is located in the pressure relief body, and the pressure relief body is integrally connected to the valve body, which saves the sealing structure at the connection between the pressure relief body and the valve body, avoids the problem of fluid leakage therein, and has simple assembly, strong structural reliability and high stability; in use, the conduction or blocking between the water retaining chamber and the pressure relief chamber is controlled by the coil assembly, thereby controlling the upper and lower pressure difference of the water retaining disc, thereby controlling the opening and closing of the water retaining disc, and realizing the connection and disconnection of the water inlet chamber and the water outlet chamber through the opening and closing of the water retaining disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0018] Figure 1 It is an exploded view of an embodiment;

[0019] Figure 2 Schematic diagram of the overall structure of the embodiment;

[0020] Figure 3 It is a schematic diagram of the structure of some embodiments;

[0021] Figure 4 is a cross-sectional view of an embodiment (front view);

[0022] Figure 5 is a cross-sectional view of an embodiment (side view);

[0023] Figure 6is a cross-sectional view of an embodiment (top view);

[0024] Figure 7 Schematic diagram of the coordination position of the pressure relief body and the pressure relief water outlet channel and the water outlet pipe in the valve body of the embodiment;

[0025] In the figure, 1-water inlet pipe, 101-water inlet chamber, 11-water retaining plate, 111-water inlet hole, 102-water retaining chamber, 12-check valve assembly; 2-water outlet pipe, 2a-first water outlet pipe, 2b-second water outlet pipe, 201-water outlet chamber, 201a-first water outlet chamber, 201b-second water outlet chamber, 21-water outlet inner cylinder, 22-check valve assembly, 23-flow limiting assembly, 24-anti-siphon assembly; 3-valve body cover, 301-valve cover chamber, 31-valve cover water inlet, 32-valve cover water outlet; 4-diversion pipe; 5-coil assembly, 501-solenoid valve chamber, 5a-first coil assembly, 5b-second coil assembly; 6-pressure relief body, 601-pressure relief chamber, 61-pressure relief water inlet channel, 61a-first pressure relief water inlet channel, 61b-second pressure relief water inlet channel, 62-pressure relief water outlet channel, 63-pressure relief cover. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the embodiments and the accompanying drawings.

[0027] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0028] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0029] Example

[0030] like Figure 1-7As shown, a pulse solenoid valve includes a water inlet pipe 1, a water outlet pipe 2, and a coil assembly 5 arranged on the valve body, wherein the valve body is provided with a water inlet chamber 101 connected to the water inlet pipe, and a water outlet chamber 201 connected to the water outlet pipe 2, and a water retaining plate 11 is provided above the water inlet chamber 101 to separate the water inlet chamber 101 and the water outlet chamber 201, and the water inlet chamber 101 is connected to the water retaining chamber 102 located above the water retaining plate 11 through the water inlet hole 111 on the water retaining plate 11, and the coil assembly 5 controls the conduction or blocking between the water retaining chamber 102 and the pressure relief chamber 601 through the valve core to adjust the upper and lower pressure difference of the water retaining plate 11, and the pressure relief chamber 601 is connected to the water outlet pipe 2; the pressure relief chamber 601 is arranged in the pressure relief body 6, and the pressure relief body 6 is integrally connected to the valve body.

[0031] Specifically, this embodiment is a three-way valve driven by a solenoid valve controlled by a pulse power supply, and its water outlet pipe 2 includes a first water outlet pipe 2a and a second water outlet pipe 2b, and a first water outlet chamber 201a and a second water outlet chamber 201b are respectively provided in the valve body corresponding to the first water outlet pipe 2a and the second water outlet pipe 2b, as well as a water retaining plate 11 and a water retaining chamber 102 respectively cooperating with the two water outlet chambers, and the pressure relief of the water retaining chamber 102 is controlled by the first coil assembly 5a and the second coil assembly 5b respectively, thereby realizing water outlet from the first water outlet pipe 2a and the second water outlet pipe 2b.

[0032] like Figure 6 As shown, when the water fills the solenoid valve chamber 501, any group of coil assemblies is passed with a positive voltage to open the pressure relief hole, and the liquid in the water retaining chamber 102 will quickly pass through the first pressure relief water inlet channel 61a or the second pressure relief water inlet channel 61b into the pressure relief chamber 601 and release the pressure through the pressure relief water outlet channel 62; the structural design of this device combines the pressure relief body with the valve body, and realizes the functions of rapid switching-water outlet-water blocking through structures such as the water retaining plate and the coil assembly. The design of the pressure relief body on the valve body enhances the stability of the overall system, reduces the possibility of system leakage, and reduces production and assembly costs.

[0033] Furthermore, the device also includes a valve cover chamber 301 arranged in the valve body upper cover 3, and the valve body upper cover 3 is provided with a valve cover water inlet 31 connected to the water retaining chamber 102, and a valve cover water outlet 32 ​​connected to the solenoid valve chamber 501, and the valve core is arranged in the solenoid valve chamber 501; the valve cover water outlet 32 ​​is connected to the solenoid valve chamber 501 through the diversion pipe 4, and the solenoid valve chamber 501 is connected to the pressure relief chamber 601 through the pressure relief water inlet channel 61, and the coil assembly 5 drives the valve core in the solenoid valve chamber 501 to control the conduction or blocking between the solenoid valve chamber 501 and the pressure relief water inlet channel 61; the diversion pipe 4, the solenoid valve chamber 501 and the pressure relief body 6 and the valve body are integrally connected.

[0034] The specific principle is as follows Figure 5As shown, when the fluid passes through the water inlet pipe 1, the water inlet chamber 101, the water inlet hole 111, the water retaining chamber 102, the valve cover chamber 301, the guide pipe 4, and the solenoid valve chamber 501 in sequence, the coil is energized in the forward direction, so that the valve core overcomes the spring force to open the pilot hole, connecting the solenoid valve chamber 501 and the pressure relief water inlet channel 61, and the fluid enters the pressure relief chamber. At this time, the water pressure in the water retaining chamber is less than the pressure in the water outlet chamber, the water retaining disc is pushed open, the water inlet chamber 101 and the water outlet chamber 201 are connected, and water starts to discharge; when the coil is energized in the reverse direction, the spring force overcomes the electromagnetic force, the pilot hole is closed, and the solenoid valve chamber 501 and the pressure relief water inlet channel 61 are blocked. At this time, the water pressure in the water retaining chamber is greater than the pressure in the water outlet chamber, and the water retaining disc 11 is closed under the action of the water pressure, and water discharge stops.

[0035] Furthermore, the valve cover water inlet 31 and the valve cover water outlet 32 ​​are respectively located on both sides of the valve cover chamber 301, and a sealing gasket is provided at the connection between the valve cover water outlet 32 ​​and the diversion pipe 4. The valve body upper cover 3 is sealed by ultrasonic welding so that the valve body upper cover is directly connected to the valve body, and the structure is simple and stable.

[0036] As can be seen from the accompanying drawings, the position of the water retaining chamber 102 is higher than the positions of the water inlet chamber 101 and the water outlet chamber 201, the position of the solenoid valve chamber 501 is lower than the position of the water retaining chamber 102, and the position of the pressure relief chamber 601 is higher than the position of the water outlet pipe 2; the above-mentioned height position is set so that there is a pressure difference between the water retaining chamber 102 above the water retaining plate 11 and the water outlet chamber 201 below the water retaining plate 11, thereby realizing the opening and closing of the water retaining plate 11; the water flows from the water retaining chamber to the solenoid valve chamber by gravity, and the pressure relief water inlet channel 61 extends upward relative to the solenoid valve chamber 501 to connect with the pressure relief chamber 601, and then flows from the pressure relief chamber to the water outlet pipe by gravity.

[0037] Furthermore, the solenoid valve cavity 501 is connected to the pressure relief chamber 601 through a pressure relief water inlet channel 61 extending upward relative to the solenoid valve cavity 501, and the pressure relief chamber 601 is connected to the water outlet pipe 2 through a pressure relief water outlet channel 62 extending downward relative to the solenoid valve cavity 501.

[0038] The separation of the water inlet chamber 101 and the water outlet chamber 201 is shown in the attached Figure 3 、 4 5. A water outlet inner cylinder 21 connected to the water outlet pipe 2 is provided in the valve body, and the inner core area of ​​the water retaining plate 11 corresponds to the upper port of the water outlet inner cylinder 21, so that a water inlet chamber 101 is formed between the outside of the water outlet inner cylinder 21 and the outer ring area of ​​the water retaining plate 11, and a water outlet chamber 201 is formed between the inside of the water outlet inner cylinder 21 and the inner core area of ​​the water retaining plate 11; the water inlet hole 111 is provided in the outer ring area of ​​the water retaining plate 11.

[0039] In addition, refer to Figure 5A check valve assembly 22 is provided between the water outlet chamber 201 and the water outlet pipe 2, a flow limiting assembly 23 is provided in the water outlet pipe 2, and an anti-siphon assembly 24 is provided at one end of the water outlet pipe 2 away from the water outlet, and a one-way valve assembly 12 is provided at the water inlet of the water inlet pipe 1; Figure 7 In this embodiment, the pressure relief water outlet channel 62 corresponds to the outer side of the anti-siphon component 24 so that the pressure relief water flows directly out of the water outlet pipe 2.

[0040] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A pulse solenoid valve, comprising a water inlet pipe (1), a water outlet pipe (2), and a coil assembly (5) arranged on a valve body, characterized in that: The valve body is provided with a water inlet chamber (101) communicating with the water inlet pipe and a water outlet chamber (201) communicating with the water outlet pipe (2); the water inlet chamber (101) is provided with a water retaining disc (11) separating the water inlet chamber (101) and the water outlet chamber (201); the water inlet chamber (101) is connected to the water retaining chamber (102) above the water retaining disc (11) through a water inlet hole (111) on the water retaining disc (11); the coil assembly (5) controls the conduction or blocking between the water retaining chamber (102) and the pressure relief chamber (601) through the valve core, thereby adjusting the upper and lower pressure differences of the water retaining disc (11); the pressure relief chamber (601) is connected to the water outlet pipe (2); The pressure relief chamber (601) is arranged in the pressure relief body (6), and the pressure relief body (6) is integrally connected to the valve body.

2. A pulse solenoid valve according to claim 1, characterized in that: The invention also includes a valve cover chamber (301) arranged in the valve body upper cover (3), the valve body upper cover (3) is provided with a valve cover water inlet (31) connected to the water retaining cavity (102), and a valve cover water outlet (32) connected to the electromagnetic valve cavity (501), and the valve core is arranged in the electromagnetic valve cavity (501).

3. A pulse solenoid valve according to claim 2, characterized in that: The valve cover water outlet (32) is connected to the electromagnetic valve chamber (501) via the guide pipe (4), and the electromagnetic valve chamber (501) is connected to the pressure relief chamber (601) via the pressure relief water inlet channel (61). The coil assembly (5) drives the valve core in the electromagnetic valve chamber (501) to control the conduction or blocking between the electromagnetic valve chamber (501) and the pressure relief water inlet channel (61); The flow guide pipe (4), the electromagnetic valve chamber (501), the pressure relief body (6) and the valve body are integrally connected.

4. A pulse solenoid valve according to claim 3, characterized in that: The valve cover water inlet (31) and the valve cover water outlet (32) are respectively located on both sides of the valve cover chamber (301), and a sealing gasket is provided at the connection between the valve cover water outlet (32) and the diversion pipe (4).

5. The pulse solenoid valve according to claim 2, characterized in that: The water retaining chamber (102) is located at a position higher than the water inlet chamber (101) and the water outlet chamber (201), the solenoid valve chamber (501) is located at a position lower than the water retaining chamber (102), and the pressure relief chamber (601) is located at a position higher than the water outlet pipe (2).

6. A pulse solenoid valve according to claim 2, characterized in that: The solenoid valve cavity (501) is connected to the pressure relief chamber (601) via a pressure relief water inlet channel (61) extending upward relative to the solenoid valve cavity, and the pressure relief chamber (601) is connected to the water outlet pipe (2) via a pressure relief water outlet channel (62) extending downward relative to the solenoid valve cavity (501).

7. The pulse solenoid valve according to claim 1, characterized in that: A water outlet inner cylinder (21) in communication with the water outlet pipe (2) is provided in the valve body, and the inner core area of ​​the water retaining plate (11) corresponds to the upper end of the water outlet inner cylinder (21), so that a water inlet chamber (101) is formed between the outside of the water outlet inner cylinder (21) and the outer ring area of ​​the water retaining plate (11), and a water outlet chamber (201) is formed between the inside of the water outlet inner cylinder (21) and the inner core area of ​​the water retaining plate (11); the water inlet hole (111) is provided in the outer ring area of ​​the water retaining plate (11).

8. The pulse solenoid valve according to claim 1, characterized in that: A check valve assembly (22) is provided between the water outlet chamber (201) and the water outlet pipe (2), a flow limiting assembly (23) is provided in the water outlet pipe (2), and an anti-siphon assembly (24) is provided at one end of the water outlet pipe (2) away from the water outlet.

9. The pulse solenoid valve according to claim 1, characterized in that: A one-way valve assembly (12) is provided at the water inlet of the water inlet pipe (1).

10. A pulse solenoid valve according to any one of claims 1 to 9, characterized in that: The water outlet pipe (2) comprises a first water outlet pipe (2a) and a second water outlet pipe (2b); a first water outlet chamber (201a) and a second water outlet chamber (201b) are respectively provided in the valve body at locations corresponding to the first water outlet pipe (2a) and the second water outlet pipe (2b); and a matching water retaining plate (11) and a water retaining chamber (102) are provided above the two water outlet chambers; the first coil assembly (5a) and the second coil assembly (5b) respectively control the water outlet of the first water outlet pipe (2a) and the second water outlet pipe (2b).

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