Non-pressure electromagnetic valve

Abstract

The invention relates to the field of water dispensers, in particular to a non-pressure electromagnetic valve. Two ends of the water outlet pipeline are communicated with the valve body inner cavity and the water outlet; the electromagnetic coil is fixedly connected with the valve body; under the condition that the electromagnetic coil is electrified, the armature in the electromagnetic coil is driven to move in the vertical direction; the armature drives the sealing mechanism to close or open the water outlet channel, a flow guide mechanism is arranged at the water outlet channel and comprises an impeller, the impeller rotates under the action of water flow gravity and drives water flow to flow out of the inner wall of the water outlet, and when the water flow flows downwards through the water outlet channel, blades of the impeller can rotate under the action of the water flow gravity. Under the action of centrifugal force, the water flow can be thrown onto the inner wall of the water outlet, and the water flow can only move downwards due to the reaction influence of the inner wall of the water outlet, so that the water flow can flow out along the inner wall, and the stability of the water type is ensured.

Description

Technical Field

[0001] The invention relates to the field of water dispensers, and in particular to a pressure-free solenoid valve. Background Art

[0002] The pressureless solenoid valve in drinking water equipment is mainly used to control the opening and closing of the water source. Since the water level in the pressureless water tank varies, and the inner diameter of the water outlet of the pressureless solenoid valve is constant, when the water level in the pressureless water tank is high, the water outlet pressure is high, and the water outlet of the pressureless solenoid valve will have the phenomenon of scattered and irregular water flow. When the water level in the pressureless water tank is at a low water level, the water outlet pressure is low and the water flow is also small. At this time, the water outlet of the pressureless solenoid valve will have the phenomenon of unstable water flow. Summary of the invention

[0003] In order to solve at least one disadvantage of the above-mentioned prior art, the present invention provides a pressureless solenoid valve, which includes a valve body, a solenoid coil, a sealing mechanism and a flow guide mechanism:

[0004] The valve body is provided with a water inlet pipe and a water outlet channel, the two ends of the water inlet pipe are connected to the inner cavity of the valve body and the water inlet; the two ends of the water outlet pipe are connected to the inner cavity of the valve body and the water outlet;

[0005] The electromagnetic coil is fixedly connected to the valve body; an armature is embedded inside the electromagnetic coil; the electromagnetic coil is used to drive the armature to achieve vertical displacement when power is turned on;

[0006] The sealing mechanism is fixedly connected to the armature; the armature drives the sealing mechanism to abut against or move away from the connection between the water outlet channel and the inner cavity of the valve body, so as to close or open the water outlet channel;

[0007] The flow guiding mechanism comprises an impeller, which is arranged on the inner wall of the water outlet. When the water outlet is opened, the impeller rotates under the action of the gravity of the water flow and drives the water flow to flow out from the inner wall of the water outlet.

[0008] Furthermore, it also includes a fastening assembly, which is used to fix the electromagnetic coil to the valve body.

[0009] Furthermore, the fastening assembly includes a fixing bracket and a fastening screw; the fixing bracket is sleeved on the outer side of the electromagnetic coil;

[0010] The fastening screws are passed through the fixing bracket and the valve body so that the fixing bracket and the electromagnetic coil are fixedly connected to the valve body.

[0011] Furthermore, the armature is a hollow columnar structure, and a guide column of a preset length is provided inside the armature; one end of the guide column is fixedly connected to the valve body; and the armature realizes vertical displacement along the guide column.

[0012] Further, the sealing mechanism includes a closing plug, the closing plug having a connecting end and a closing end; the connecting end is fixedly connected to the armature;

[0013] The port diameter of the closed end is larger than the diameter of the water outlet channel; the closed end abuts against or moves away from the connection between the water outlet channel and the inner cavity of the valve body under the drive of the armature.

[0014] Further, the impeller includes a central shaft and blades; a first end of the central shaft extends toward the inner cavity of the valve body, and a second end of the central shaft extends toward the water outlet;

[0015] The blades are distributed in the middle of the central axis; the blades are spiral blades.

[0016] Furthermore, the flow guiding mechanism also includes a guide ring; the guide ring is connected to one end of the central axis of the impeller; the guide ring is used to guide the water flow to the impeller.

[0017] Furthermore, the guide ring is provided with a plurality of through holes, and water flows toward the impeller through the plurality of through holes.

[0018] Furthermore, it also includes a guide rib; the guide rib is arranged on the inner wall of the water outlet and surrounds the outside of the second end of the impeller central axis;

[0019] There is a preset interval between the guide rib and the central axis, so that water flows out through the preset interval.

[0020] Furthermore, a filter screen is provided on the end face of the water inlet, and the filtering area of ​​the filter screen is consistent with the cross-sectional area of ​​the water inlet.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects:

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, where the same reference numerals generally represent the same components. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 The figure is a schematic diagram of the structure of a pressure-free solenoid valve according to an embodiment of the present invention.

[0025] The following is a supplementary description of the attached drawings:

[0026] 1-valve body; 11-water inlet pipe; 12-water outlet channel; 13-water inlet; 14-water outlet; 2-electromagnetic coil; 3-sealing mechanism; 4-flow guide mechanism; 41-impeller; 42-guide ring; 43-flow guide rib; 5-armature; 6. Fastening assembly; 61-fixing bracket; 62-fastening screw; 7-guide column; 8-filter screen. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0029] refer to Figure 1 As shown, an embodiment of the present invention provides a pressure-free solenoid valve, including a valve body 1, an electromagnetic coil 2, a sealing mechanism 3 and a flow guiding mechanism 4.

[0030] The valve body 1 is provided with a water inlet pipe 11 and a water outlet channel 12 . The two ends of the water inlet pipe 11 are connected to the inner cavity of the valve body 1 and the water inlet 13 ; the two ends of the water outlet pipe are connected to the inner cavity of the valve body 1 and the water outlet 14 .

[0031] Specifically, a water inlet pipe 11 and a water outlet pipe are arranged on the valve body 1 of the pressureless solenoid valve. In the exemplary embodiment, the water inlet pipe 11 is arranged on the side of the valve body 1, and the water outlet pipe is arranged at the bottom of the valve body 1. The water inlet pipe 11 and the water outlet pipe are connected at a 90-degree angle. The two ends of the water inlet pipe 11 are connected to the inner cavity of the valve body 1 and the water inlet 13. The water inlet 13 is connected to a drinking water device. The water in the drinking water device can enter the inner cavity of the valve body 1 of the pressureless solenoid valve through the water inlet 13 and then through the water inlet pipe 11; the two ends of the water outlet pipe are connected to the inner cavity of the valve body 1 and the water outlet 14. The water outlet 14 is connected to an external water receiving device. The water in the inner cavity of the valve body 1 flows to the water outlet 14 through the water outlet pipe, and then enters the external water receiving device.

[0032] The electromagnetic coil 2 is fixedly connected to the valve body 1; an armature 5 is embedded inside the electromagnetic coil 2; and the electromagnetic coil 2 is used to drive the armature 5 to achieve vertical displacement when powered.

[0033] Specifically, the electromagnetic coil 2 is fixed to the upper part of the valve body 1. The electromagnetic coil 2 includes a coil frame, a wire, a terminal and other components. The coil frame is used to support and fix the wire so that the coil maintains a certain shape and structure. The wire is the core component of the electromagnetic coil 2 and is usually made of a material with good electrical conductivity, such as copper wire or aluminum wire. The terminal is used as a connection point of the electromagnetic coil 2 to connect the coil to the circuit. The terminal can be a metal sheet welded on the wire or a special wiring structure. The wire is wound into a spiral to form a coil. The insulating layer wrapped outside the wire is used to prevent current leakage and short circuit. The electromagnetic coil 2 works on the principle of electromagnetic induction. It is composed of wires wound on concentric axes and generates a magnetic field when energized. An armature 5 is embedded inside the electromagnetic coil 2. The armature 5 is a vertically placed long magnet with a movable space inside the electromagnetic coil 2. When the electromagnetic coil 2 is energized to generate a magnetic field, the armature 5 is subjected to the force of the magnetic field to achieve vertical displacement.

[0034] In a possible manner, a fastening assembly 6 is further included, and the fastening assembly 6 is used to fix the electromagnetic coil 2 to the valve body 1. Further, the fastening assembly 6 includes a fixing bracket 61 and a fastening screw 62; the fixing bracket 61 is sleeved on the outside of the electromagnetic coil 2; the fastening screw 62 is penetrated through the fixing bracket 61 and the valve body 1, so that the fixing bracket 61 and the electromagnetic coil 2 are fixedly connected to the valve body 1.

[0035] Specifically, the electromagnetic coil 2 is fixed to the upper half of the valve body 1 by a fastening assembly 6. The fastening assembly 6 includes a fixing bracket 61 and a fastening screw 62. The fixing bracket 61 is a shell with a fixed end, which can be sleeved on the outside of the electromagnetic coil 2. The upper end of the fixing bracket 61 has a bending structure, which is clamped on the outside of the electromagnetic coil 2. The lower end of the fixing bracket 61 has a fixed end, which abuts on the valve body 1. The valve body 1 has a fixed platform, and the fixed end abuts on the fixed platform of the valve body 1. The fixed end and the fixed platform have screw holes. The fastening screw 62 is penetrated through the fixing bracket 61 and the valve body 1 through the screw holes, so that the fixing bracket 61 and the electromagnetic coil 2 are fixedly connected to the valve body 1.

[0036] Furthermore, the armature 5 is a hollow columnar structure, and a guide column 7 of a preset length is provided inside the armature 5 ; one end of the guide column 7 is fixedly connected to the valve body 1 ; and the armature 5 realizes vertical displacement along the guide column 7 .

[0037] Specifically, the interior of the armature 5 is hollow, the armature 5 is sleeved on the outside of the guide column 7, one end of the guide column 7 is fixedly connected to the valve body 1, and the other end is suspended inside the armature 5, the guide column 7 has a movable space inside the armature 5, and the preset length of the guide column 7 is not less than the movable length of the armature 5 in the vertical direction, so that the armature 5 can be displaced in the vertical direction along the guide column 7, and the preset length is not limited here.

[0038] The sealing mechanism 3 is fixedly connected to the armature 5 ; the armature 5 drives the sealing mechanism 3 to abut against or move away from the connection between the water outlet channel 12 and the inner cavity of the valve body 1 to close or open the water outlet channel 12 .

[0039] Specifically, the sealing mechanism 3 is fixedly connected to the lower end of the armature 5, and the armature 5 can drive the sealing mechanism 3 to achieve vertical displacement. When the electromagnetic coil 2 is not energized, the armature 5 will not drive the sealing mechanism 3 to move upward, and the sealing mechanism 3 abuts against the connection between the water outlet channel 12 and the inner cavity of the valve body 1. At this time, the water outlet channel 12 is in a closed state, and the water flow of the water inlet pipe 11 cannot enter the water outlet channel 12; when the electromagnetic coil 2 is energized, the armature 5 drives the sealing mechanism 3 to move upward, and the sealing mechanism 3 is away from the connection between the water outlet channel 12 and the inner cavity of the valve body 1. At this time, the water outlet channel 12 is in an open state, and the water flow of the water inlet pipe 11 can enter the water outlet channel 12, and then flow to the water outlet 14.

[0040] In one possible embodiment, the sealing mechanism 3 includes a closing plug having a connecting end and a closing end; the connecting end is fixedly connected to the armature 5; the port diameter of the closing end is larger than the diameter of the water outlet channel 12; the closing end is driven by the armature 5 to abut or move away from the connection between the water outlet channel 12 and the inner cavity of the valve body 1.

[0041] Specifically, the sealing plug of the sealing mechanism 3 has a connecting end and a closing end, the lower end of the armature 5 has a protruding structure, and the connecting end of the sealing plug has a groove structure. The protruding structure of the armature 5 cooperates with the groove structure of the sealing plug, so that the connecting end of the sealing plug is fixedly connected to the armature 5. The closing end of the sealing plug abuts against or moves away from the connection between the water outlet channel 12 and the inner cavity of the valve body 1 under the drive of the armature 5 to control the opening or closing of the water outlet channel 12. In order to block the water outlet channel 12, the port diameter of the sealing plug is larger than the diameter of the water outlet channel 12. When the closing end of the sealing plug is used to abut against the connection between the water outlet channel 12 and the inner cavity of the valve body 1, the water flow cannot enter the water outlet channel 12 through the sealing plug. The closing end can abut against or move away from the connection between the water outlet channel 12 and the inner cavity of the valve body 1 under the drive of the armature 5. When water needs to be discharged, the armature 5 drives the closing end of the sealing plug away from the connection between the water outlet channel 12 and the inner cavity of the valve body 1, so that the water flow enters the water outlet channel 12 and then flows out from the water outlet 14.

[0042] The flow guiding mechanism 4 includes an impeller 41 , which is disposed on the inner wall of the water outlet 14 . When the water outlet 14 is open, the impeller 41 rotates under the gravity of the water flow and drives the water flow to flow out from the inner wall of the water outlet 14 .

[0043] Specifically, the flow guiding mechanism 4 is used to guide the water to flow out from the water outlet 14 . The guide mechanism 4 includes an impeller 41. In the embodiment of the present invention, no matter under high-pressure water level or low-pressure water level, when the water flows downward through the water outlet channel 12, the blades of the impeller 41 can rotate under the action of the gravity of the water flow, and then drive the water flow to rotate. When the water flow is large under high-pressure water level, the rotating impeller 41 will throw the water flow onto the inner wall of the water outlet 14 under the action of centrifugal force. At this time, the water flow can only move downward due to the reaction of the inner wall of the water outlet 14, so the water flow will flow out along the inner wall and will not splash and scatter everywhere; when the water flow is small under low-pressure water level, for the pressureless solenoid valve in the prior art, the water flow may not be able to completely fill the space of the entire water outlet channel 12, so the water flow will randomly flow out at the water outlet 14, and the water shape of the outlet water will have an erratic visual experience. In the present application, under the action of the centrifugal force of the rotating impeller 41, the water flow can always flow out along the inside of the water outlet 14, and will not be unstable and scattered everywhere.

[0044] In a possible implementation, the impeller 41 includes a central shaft and blades; the first end of the central shaft extends toward the inner cavity of the valve body 1, and the second end of the central shaft extends toward the water outlet 14; the blades are distributed in the middle of the central shaft; and the blades are spiral blades.

[0045] Specifically, the central axis of the impeller 41 is vertically arranged, the first end of the central axis extends toward the inner cavity of the valve body 1, the second end of the central axis extends toward the water outlet 14 and does not exceed the port of the water outlet 14, and a plurality of blades are annularly arranged and distributed in the middle of the central axis, and the blades are spiral blades that can rotate under the gravity of the water flow. In other possible embodiments, the shape and number of the blades can be set according to actual needs, as long as they can be rotated under the gravity of the water flow, and are not limited here.

[0046] In a possible implementation, the flow guide mechanism 4 further includes a guide ring 42; the guide ring 42 is connected to one end of the central axis of the impeller 41; the guide ring 42 is used to guide the water flow to the impeller 41. Furthermore, the guide ring 42 is provided with a plurality of through holes, and the water flow flows to the impeller 41 through the plurality of through holes.

[0047] Specifically, the guide ring 42 is used to guide the direction of the water flow. The guide ring 42 is connected to the first end of the central axis of the impeller 41. The diameter of the guide ring 42 is consistent with the inner diameter of the water outlet channel 12, so that the water flows into the water outlet channel 12 through the guide ring 42; further, the guide ring 42 is provided with a plurality of through holes in the vertical direction, and the water flows toward the impeller 41 through the plurality of through holes, so that the water flows downward in the direction guided by the through holes, thereby ensuring the stability of the water pattern.

[0048] In a possible embodiment, it also includes a guide rib 43; the guide rib 43 is arranged on the inner wall of the port of the water outlet 14 and surrounds the outside of the second end of the central axis of the impeller 41; there is a preset gap between the guide rib 43 and the central axis so that water flows out through the preset gap.

[0049] Specifically, the guide rib 43 and the inner wall of the water outlet channel 12 are integrally formed. The guide rib 43 is a sheet-like structure that surrounds the outside of the second end of the central axis of the impeller 41, and there is a preset interval between the guide rib 43 and the central axis to allow water to flow out through the preset interval. Exemplarily, the preset interval is 5 mm. In other embodiments, it can be set according to actual needs, such as water outlet speed, which is not limited here.

[0050] In a possible implementation manner, a filter screen 8 is provided on the end surface of the water inlet 13 , and the filtering area of ​​the filter screen 8 is consistent with the cross-sectional area of ​​the water inlet 13 .

[0051] Specifically, the filter screen 8 is used to filter impurities in the water flow entering the pressureless solenoid valve. The material of the filter screen 8 can be the same as the material of the water inlet pipe 11, and cast iron, carbon steel, low alloy steel or stainless steel and other materials can be selected, which have good corrosion resistance; exemplarily, the filter medium can be a stainless steel sintered filter screen, which has high filtering strength and high precision and is suitable for a variety of water quality conditions. The filtering area of ​​the filter screen 8 is consistent with the cross-sectional area of ​​the water inlet 13, so that the water flow is first filtered through the filter screen 8 and then enters the water inlet pipe 11, ensuring the filtering effect.

[0052] Through the above implementation mode, the pressureless solenoid valve of the present invention is provided with a water inlet pipe and a water outlet channel on the valve body, the two ends of the water inlet pipe are connected to the inner cavity of the valve body and the water inlet; the two ends of the water outlet pipe are connected to the inner cavity of the valve body and the water outlet; the electromagnetic coil is fixedly connected to the valve body; an armature is embedded inside the electromagnetic coil; the electromagnetic coil is used to drive the armature to achieve vertical displacement when energized; the sealing mechanism is fixedly connected to the armature; the armature drives the sealing mechanism to abut or move away from the connection between the water outlet channel and the inner cavity of the valve body to achieve closing or opening of the water outlet channel, and a diversion mechanism is provided at the water outlet channel, the diversion mechanism includes an impeller, and the impeller rotates under the action of water gravity. The impeller rotates and drives the water to flow out from the inner wall of the water outlet. When the water flows downward through the water outlet channel, the blades of the impeller can rotate under the action of the gravity of the water flow, and then drive the water flow to rotate. When the water flow is large under high-pressure water level, the rotating impeller will throw the water flow onto the inner wall of the water outlet under the action of centrifugal force. At this time, the water flow can only move downward due to the reaction of the inner wall of the water outlet. Then the water flow will flow out along the inner wall without splashing and scattering. When the water flow is small under low-pressure water level, the centrifugal force of the rotating impeller can make the water flow always flow out along the inside of the water outlet, and the water flow will not be unstable and drifting around.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressureless solenoid valve, characterized in that: It comprises a valve body (1), an electromagnetic coil (2), a sealing mechanism (3) and a flow guiding mechanism (4): The valve body (1) is provided with a water inlet pipe (11) and a water outlet channel (12); the two ends of the water inlet pipe (11) are connected to the inner cavity of the valve body (1) and the water inlet; the two ends of the water outlet pipe are connected to the inner cavity of the valve body (1) and the water outlet (14); The electromagnetic coil (2) is fixedly connected to the valve body (1); an armature (5) is embedded inside the electromagnetic coil (2); the electromagnetic coil (2) is used to drive the armature (5) to achieve vertical displacement when powered; The sealing mechanism (3) is fixedly connected to the armature (5); the armature (5) drives the sealing mechanism (3) to abut against or move away from the connection between the water outlet channel (12) and the inner cavity of the valve body (1), so as to close or open the water outlet channel (12); The flow guiding mechanism (4) comprises an impeller (41), and the impeller (41) is arranged on the inner wall of the water outlet (14). When the water outlet (14) is in an open state, the impeller (41) rotates under the action of the gravity of the water flow, and drives the water flow to flow out from the inner wall of the water outlet (14).

2. The pressureless solenoid valve according to claim 1, characterized in that: It also comprises a fastening assembly (6), wherein the fastening assembly (6) is used to fixedly connect the electromagnetic coil (2) and the valve body (1).

3. The pressureless solenoid valve according to claim 2, characterized in that: The fastening assembly (6) comprises a fixing bracket (61) and a fastening screw (62); the fixing bracket (61) is sleeved on the outer side of the electromagnetic coil (2); The fastening screw (62) is inserted through the fixing bracket (61) and the valve body (1) so that the fixing bracket (61) and the electromagnetic coil (2) are fixedly connected to the valve body (1).

4. The pressureless solenoid valve according to claim 1, characterized in that: The armature (5) is a hollow columnar structure, and a guide column (7) of a preset length is provided inside the armature (5); one end of the guide column (7) is fixedly connected to the valve body (1); and the armature (5) achieves vertical displacement along the guide column (7).

5. The pressureless solenoid valve according to claim 1, characterized in that: The sealing mechanism (3) comprises a closing plug, the closing plug having a connecting end and a closing end; the connecting end is fixedly connected to the armature (5); The port diameter of the closed end is larger than the diameter of the water outlet channel (12); driven by the armature (5), the closed end abuts against or moves away from the connection between the water outlet channel (12) and the inner cavity of the valve body (1).

6. The pressureless solenoid valve according to claim 1, characterized in that: The impeller (41) comprises a central shaft and blades; a first end of the central shaft extends toward the inner cavity of the valve body (1), and a second end of the central shaft extends toward the water outlet (14); The blades are distributed in the middle of the central axis; the blades are spiral blades.

7. The pressureless solenoid valve according to claim 6, characterized in that: The flow guiding mechanism (4) further comprises a guide ring (42); the guide ring (42) is connected to one end of the central axis of the impeller (41); the guide ring (42) is used to guide the water flow to the impeller (41).

8. The pressureless solenoid valve according to claim 7, characterized in that: The guide ring (42) is provided with a plurality of through holes, and the water flows toward the impeller (41) through the plurality of through holes.

9. The pressureless solenoid valve according to claim 7, characterized in that: The flow guiding mechanism (4) further comprises a flow guiding rib (43); the flow guiding rib (43) is arranged on the inner wall of the port of the water outlet (14) and surrounds the outside of the second end of the central axis of the impeller (41); There is a preset interval between the guide rib (43) and the central axis, so that water flows out through the preset interval.

10. The pressureless solenoid valve according to claim 1, characterized in that: A filter screen (8) is provided on the end surface of the water inlet, and the filtering area of ​​the filter screen (8) is consistent with the cross-sectional area of ​​the water inlet.

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