Drain electromagnetic valve

Abstract

The application relates to the technical field of electromagnetic valves, and provides a water drainage electromagnetic valve which comprises a valve body, a valve core assembly and an electromagnetic assembly, the electromagnetic assembly is sleeved on the valve core assembly, the valve core assembly comprises a valve core, a sealing cover is connected to the lower end of the valve core, a water sealing seat is arranged in the valve body, an elastic gasket protruding relative to the upper end of the water sealing seat is fixed around the upper end of the water sealing seat, the sealing cover is fixedly connected with the lower end of the valve core, under the driving action of the valve core, the sealing cover has a closed position of sealingly cooperating with the elastic gasket to block the upper end opening of the water sealing seat and an open position of leaving the elastic gasket to expose the upper end opening of the water sealing seat. The water drainage electromagnetic valve can effectively improve the sealing badness caused by the deformation of the sealing cover after being subjected to the force generated by the spring and the valve core for a long time, and the sealing badness caused by the sealing cover manufacturing process, the sealing property of the device is improved, and the service life is longer.

Description

Technical Field

[0001] This application relates to the field of solenoid valve technology, and more particularly to a drain solenoid valve. Background Technology

[0002] A drain solenoid valve is an electromagnetically controlled industrial device, a fundamental component of automation used to control fluids, and belongs to the actuator category. Currently, drain solenoid valves on the market have basically the same structure and working principle. The structure of a drain solenoid valve consists of a valve body, valve core, sealing head, annular sealing ring, spring, valve core sleeve, and coil. Its valve body has an inflow channel, an outflow channel, and a valve chamber. Fluid flows from the inflow channel through the valve chamber and then out through the outflow channel.

[0003] The applicant's prior patent CN216843132U discloses a snap-fit ​​installation structure for a drain valve. The sealing plug on the drain valve is driven by an iron core under the action of an electromagnetic coil, cooperating with the outlet of the valve body to achieve sealing or opening. However, this structure places the spring and valve core in the middle, resulting in the overall stress point being in the middle position. Prolonged stress on the sealing head can cause deformation at the center, leading to poor sealing performance in the circumferential direction. Furthermore, the manufacturing process of the sealing head on the electromagnetic valve requires high precision, often resulting in poor sealing performance due to manufacturing defects. Summary of the Invention

[0004] This invention provides a water discharge solenoid valve, which can improve the technical problems of sealing head center deformation and poor sealing performance existing in related technologies.

[0005] This invention provides a water discharge solenoid valve, including a valve body, a valve core assembly, and an electromagnetic assembly. The electromagnetic assembly is sleeved on the valve core assembly. The valve core assembly includes a valve core, and a sealing cap is connected to the lower end of the valve core. A water sealing seat is provided inside the valve body. An elastic washer that protrudes from the upper end of the water sealing seat is fixed around the upper end of the water sealing seat. The sealing cap is fixedly connected and cooperates with the lower end of the valve core. Under the driving action of the valve core, the sealing cap has a closed position where it seals with the elastic washer to block the upper opening of the water sealing seat, and an open position where it leaves the elastic washer and exposes the upper opening of the water sealing seat.

[0006] Furthermore, an annular groove is provided at the upper end of the water sealing seat, and the elastic washer is connected inside the annular groove.

[0007] Furthermore, the elastic gasket includes an installation body and a sealing mating part. The shape of the installation body is adapted to the annular groove and is embedded in the annular groove. The sealing mating part protrudes from the upper end of the sealing seat for sealing mating with the sealing cap.

[0008] Furthermore, the lower end face of the sealing cap is flat, and the upper end of the sealing mating part, which is used to seal with the sealing cap, is a convex curved surface.

[0009] Furthermore, the cross-section of the sealing mating part is a large circumference, and its thickness gradually increases from the upper end of the mounting body and then decreases to zero at the top.

[0010] Furthermore, a limiting ring is provided on the upper end of the sealing seat within the annular groove. The outer diameter of the limiting ring is adapted to the minimum inner diameter of the sealing mating part and is smaller than the inner diameter of the annular groove. The upper end of the inner circumference of the annular groove and the lower end of the outer circumference of the limiting ring are connected by two rounded corners.

[0011] Furthermore, the bottom outer periphery of the sealing mating part protrudes to form a pressure strip ring, the upper end of the water sealing seat is provided with a limiting platform on the outer periphery of the annular groove, the water discharge solenoid valve also includes a fixing buckle ring, the fixing buckle ring and the water sealing seat are buckled together, the pressure strip ring is located between the fixing buckle ring and the limiting platform, and the sealing cover is provided with an annular notch at the position corresponding to the upper end of the fixing buckle ring.

[0012] Furthermore, the fixing buckle ring includes a fixing ring and a connecting ring. The inner diameter of the fixing ring is adapted to the inner diameter of the pressure strip ring, and the inner diameter of the connecting ring is adapted to the outer diameter of the water sealing seat. The connecting ring is provided with an annular groove, and the outer periphery of the water sealing seat is provided with a protruding annular locking block. The groove and the locking block are adapted to each other.

[0013] Furthermore, the upper end of the sealing cover is provided with a connecting seat, which is an annular seat with one end open. Its internal shape is adapted to and can be fitted and connected with the head shape of the valve core. The lower end of the sealing cover has a rounded corner on the circumferential plane.

[0014] Furthermore, the valve core assembly also includes a valve core sleeve and a connecting plate connected together. One end of the valve core sleeve is closed and the other end is open. The connecting plate is connected to the open end of the valve core sleeve and has a through hole corresponding to the opening of the valve core sleeve. The valve core is located inside the valve core sleeve. A spring is connected between the valve core and the valve core sleeve. The electromagnetic component is sleeved on the valve core sleeve. A base plate is provided between the connecting plate and the electromagnetic component. The base plate is connected to the valve body by a nut. The outer diameter of the connecting plate and the inner diameter of the upper end of the valve body are adapted to form a sealing fit with the valve body.

[0015] The beneficial effects of the present invention are as follows: The waterproof solenoid valve provided by the present invention assembles an elastic gasket in the valve body cavity, fixes the elastic gasket to the water sealing seat, and fixes the sealing cover to the lower end of the valve core. The sealing cover and the elastic gasket are compatible. This structure can effectively improve the sealing problems caused by the deformation of the sealing cover after the sealing cover is subjected to the force generated by the spring and the valve core for a long time, as well as the sealing problems caused by the manufacturing process of the sealing cover in mass production. It improves the sealing performance of the device and extends its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this invention.

[0017] Figure 1 This is a schematic diagram of the explosive structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 for Figure 2 A magnified view of a portion of structure A;

[0020] Figure 4 This is a partially enlarged view of the water sealing base of the present invention;

[0021] Figure 5 This is a cross-sectional view of the elastic washer of the present invention;

[0022] Figure 6 This is a cross-sectional view of the fixing buckle of the present invention;

[0023] Figure 7 This is a side view of the sealing cap of the present invention.

[0024] The following are the labeling elements in the figure:

[0025] 1. Valve body; 2. Valve core; 3. Spring; 4. Valve core sleeve; 5. Electromagnetic assembly; 6. Sealing cover; 7. Fixing buckle ring; 8. Elastic washer; 10. Base; 11. Water sealing seat; 21. Connecting plate; 61. Connecting seat; 62. Circumferential notch; 71. Connecting ring; 72. Fixing ring; 81. Pressure strip ring; 111. Annular groove; 112. Locking block; 711. Locking groove; 821. Mounting body; 822. Sealing mating part; 1111. Limiting platform; 1112. Limiting ring. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0027] See appendix Figure 1-3This invention provides a water discharge solenoid valve, comprising a valve body 1, a valve core assembly, and an electromagnetic assembly 5. The electromagnetic assembly 5 is sleeved on the valve core assembly. The valve core assembly includes a valve core 2, with a sealing cap 6 connected to its lower end. A water-sealing seat 11 is provided inside the valve body 1. An elastic washer 8, protruding from the upper end of the water-sealing seat 11, is fixedly attached to the upper end of the water-sealing seat 11. The sealing cap 6 is fixedly connected to the lower end of the valve core 2. Under the driving action of the valve core 2, the sealing cap 6 has a closed position where it seals against the elastic washer 8, blocking the opening at the upper end of the water-sealing seat 11, and an open position where it leaves the elastic washer 8, exposing the opening at the upper end of the water-sealing seat 11. This invention, through this design, effectively replaces the sealing cap 6, which deforms after prolonged stress, and addresses the sealing problems caused by poor manufacturing processes in mass-produced sealing caps. This improves the sealing performance of the device and extends its service life.

[0028] See appendix Figure 2-4 The water-sealing base 11 has an annular groove 111 at its upper end, and the elastic washer 8 is connected within the annular groove 111. The annular groove 111 can be a square groove, a trapezoidal groove with an outer opening width smaller than the bottom width, etc., and the elastic washer 8 and the annular groove 111 can be fitted together. Adhesives or the like can also be added between the annular groove 111 and the elastic washer 8 to achieve a connection. This design makes it easy to connect the elastic washer 8.

[0029] See appendix Figure 3-4 The elastic washer 8 includes an mounting body 821 and a sealing mating part 822. The mounting body 821 is shaped to fit the annular groove 111 and is embedded in the annular groove 111. The sealing mating part 822 protrudes from the upper end of the sealing seat 11 for sealing mating with the sealing cap 6. This design further improves the sealing effect.

[0030] See appendix Figure 3 Appendix Figure 5 and attached Figure 7 The lower end face of the sealing cap 6 is flat, while the upper end of the sealing mating part 822, which is used to seal with the sealing cap 6, is a convex curved surface. Through this design, the sealing mating part 822 has a certain deformation capability, and its flat fit with the lower end face of the sealing cap 6 enhances the sealing effect to a certain extent.

[0031] See appendix Figure 5 The sealing mating part 822 has a large circumferential cross-section, and its thickness gradually increases from the upper end of the mounting body 821 and then decreases to zero at the top. This design enables the sealing mating part 822 to have variable properties.

[0032] See appendix Figure 3-5The upper end of the sealing seat 11 is provided with a limiting ring 1112 on the inner circumference of the annular groove 111. The outer diameter of the limiting ring 1112 is adapted to the minimum inner diameter of the sealing mating part 822 and is smaller than the inner diameter of the annular groove 111. The upper end of the inner circumference of the annular groove 111 and the lower end of the outer circumference of the limiting ring 1112 are transitioned by two rounded corners. Through this setting, the sealing mating part 822 and the limiting ring are more closely matched, providing a certain deformation space for the sealing mating part 822, which enhances the sealing effect to a certain extent. The chamfer setting ensures that the elastic gasket will not be damaged after deformation, thus extending the service life of the elastic gasket.

[0033] See appendix Figure 2-6 The sealing mating part 822 has a raised outer periphery at its bottom to form a pressure strip ring 81. The upper end of the water sealing seat 11 has a limiting platform 1111 on the outer periphery of the annular groove 111. The water discharge solenoid valve also includes a fixing buckle ring 7, which is snapped together with the water sealing seat 11. The pressure strip ring 81 is limited between the fixing buckle ring 7 and the limiting platform 1111. The sealing cover 6 has a circumferential notch 62 corresponding to the upper end of the fixing buckle ring 7. The fixing buckle ring 7 and the water sealing seat 11 can be snapped together, threaded together, etc. Through this design, the elastic washer 8 is easy to disassemble and assemble, and the fixing buckle ring 7 ensures that it is firmly fixed after assembly.

[0034] See appendix Figure 3-6 The fixing buckle 7 includes a fixing ring 72 and a connecting ring 71. The inner diameter of the fixing ring 72 is adapted to the inner diameter of the pressure strip ring 81, and the inner diameter of the connecting ring 71 is adapted to the outer diameter of the water sealing seat 11. The connecting ring 71 is provided with an annular groove 711, and the water sealing seat 11 is provided with a protruding annular locking block 112 on its outer periphery. The groove 711 and the locking block 112 are adapted to each other. This design allows the fixing buckle 7 to be quickly installed and removed, facilitating cleaning and replacement.

[0035] See appendix Figure 3 and attached Figure 7 The sealing cover 6 has a connecting seat 61 at its upper end. The connecting seat 61 is an annular seat with one open end, and its internal shape is adapted to and fits into the head shape of the valve core 2. The lower end of the sealing cover 6 has rounded corners on its circumferential surface. This design simplifies the manufacturing process of the sealing cover 6, facilitates its assembly with the valve core 2, enhances its practicality, and allows for replacement if the sealing cover 6 is damaged and its sealing performance is poor. The rounded corners prevent damage to the elastic gasket during sealing.

[0036] See appendix Figure 1-2The valve core assembly further includes a valve core sleeve 4 and a connecting plate 21 connected together. One end of the valve core sleeve 4 is closed, and the other end is open. The connecting plate 21 is connected to the open end of the valve core sleeve 4 and has a through hole corresponding to the opening of the valve core sleeve 4. The valve core 2 is located inside the valve core sleeve 4. A spring 3 connects the valve core 2 and the valve core sleeve 4. The electromagnetic component 5 is sleeved on the valve core sleeve 4. A base plate 10 is provided between the connecting plate 21 and the electromagnetic component 5. The base plate 10 is connected to the valve body 1 by a nut. The outer diameter of the connecting plate 21 and the inner diameter of the upper end of the valve body 1 are adapted to form a sealing fit with the valve body 1. This design ensures that the sealing cover 6, which is linked to the valve core 2, will not be misaligned, guaranteeing the sealing performance of the device. It also makes the assembly of the device convenient and quick, resulting in a compact structure. The connecting plate 21 is completely embedded inside the valve body 1, further ensuring the sealing effect of the device.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A water discharge solenoid valve, comprising a valve body (1), a valve core assembly, and a solenoid assembly (5), wherein the solenoid assembly (5) is sleeved on the valve core assembly, and the valve core assembly comprises a valve core (2), characterized in that, The valve core (2) is connected to a sealing cap (6) at its lower end. The valve body (1) is provided with a water sealing seat (11). An elastic washer (8) that protrudes from the upper end of the water sealing seat (11) is fixed around the upper end of the water sealing seat (11). The sealing cap (6) is fixedly connected to the lower end of the valve core (2). Under the driving action of the valve core (2), the sealing cap (6) has a closed position where it seals with the elastic washer (8) to block the upper opening of the water sealing seat (11) and an open position where it leaves the elastic washer (8) and exposes the upper opening of the water sealing seat (11). The elastic gasket (8) includes an installation body (821) and a sealing mating part (822). The shape of the installation body (821) is adapted to the annular groove (111) and is embedded in the annular groove (111). The sealing mating part (822) protrudes from the upper end of the sealing seat (11) for sealing mating with the sealing cover (6). The sealing mating part (822) has a raised outer periphery at the bottom to form a pressure strip ring (81). The upper end of the water sealing seat (11) is provided with a limiting platform (1111) on the outer periphery of the annular groove (111). The water discharge solenoid valve also includes a fixing buckle ring (7). The fixing buckle ring (7) and the water sealing seat (11) are buckled together. The pressure strip ring (81) is limited between the fixing buckle ring (7) and the limiting platform (1111). The sealing cover (6) is provided with a circumferential notch (62) at the position corresponding to the upper end of the fixing buckle ring (7). The sealing cover (6) is provided with a connecting seat (61) at the upper end. The connecting seat (61) is an annular seat with one end open. Its internal shape is adapted to and fitted with the head shape of the valve core (2). The lower end of the sealing cover (6) has a rounded corner on the circumferential plane.

2. The water discharge solenoid valve according to claim 1, characterized in that: The upper end of the water sealing seat (11) is provided with an annular groove (111), and the elastic washer (8) is connected in the annular groove (111).

3. A water discharge solenoid valve according to claim 2, characterized in that: The lower end face of the sealing cap (6) is a plane, and the upper end of the sealing mating part (822) for sealing mating with the sealing cap (6) is a convex curved surface.

4. A water discharge solenoid valve according to claim 3, characterized in that: The sealing mating part (822) has a large cut circle in cross section, and its thickness gradually increases from the upper end of the mounting body (821) and then decreases to zero at the top.

5. A water discharge solenoid valve according to claim 4, characterized in that: The upper end of the sealing seat (11) is provided with a limiting ring (1112) on the inner circumference of the annular groove (111). The outer diameter of the limiting ring (1112) is adapted to the minimum inner diameter of the sealing mating part (822) and is smaller than the inner diameter of the annular groove (111). The upper end of the inner circumference of the annular groove (111) and the lower end of the outer circumference of the limiting ring (1112) are connected by two rounded corners.

6. A water discharge solenoid valve according to claim 5, characterized in that: The fixing buckle ring (7) includes a fixing ring (72) and a connecting ring (71). The inner diameter of the fixing ring (72) is adapted to the inner diameter of the pressure strip ring (81). The inner diameter of the connecting ring (71) is adapted to the outer diameter of the water sealing seat (11). The connecting ring (71) is provided with an annular groove (711). The water sealing seat (11) is provided with a protruding annular block (112) on its outer periphery. The groove (711) and the block (112) are adapted to each other.

7. A water discharge solenoid valve according to claim 6, characterized in that: The valve core assembly also includes a valve core sleeve (4) and a connecting plate (21) connected together. One end of the valve core sleeve (4) is closed and the other end is open. The connecting plate (21) is connected to the open end of the valve core sleeve (4) and has a through hole corresponding to the opening of the valve core sleeve (4). The valve core (2) is located inside the valve core sleeve (4). A spring (3) is connected between the valve core (2) and the valve core sleeve (4). The electromagnetic component (5) is sleeved on the valve core sleeve (4). A base plate (10) is provided between the connecting plate (21) and the electromagnetic component (5). The base plate (10) is connected to the valve body (1) by a nut. The outer diameter of the connecting plate (21) and the inner diameter of the upper end of the valve body (1) are adapted to form a sealing fit with the valve body (1).

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