Electrically controlled valve with elliptical diaphragm opening passage

Abstract

This utility model discloses an electrically controlled valve with an elliptical diaphragm opening channel, relating to the technical field of electrically controlled valves. The utility model includes a pilot control valve and a valve seat located at the lower end of the pilot control valve. An elliptical groove is formed on the upper surface of the valve seat, and an elliptical diaphragm is disposed at the position of the elliptical groove on the upper surface of the valve seat. The left end of the electrically controlled valve is designated as an inlet, and the right end as a drain outlet. The diaphragm is positioned between the pilot control valve and the valve seat. By employing an elliptical diaphragm, this utility model improves the sealing performance at the elliptical groove port.

Description

Technical Field

[0001] This utility model belongs to the technical field, and in particular relates to an electrically controlled valve with an elliptical diaphragm opening channel. Background Technology

[0002] As a key control element, the electric valve is widely used in various fluid pipeline systems to realize the on-off control of the medium. In the pilot-operated electric valve, the diaphragm is the core component for sealing and opening. Its performance is directly related to the sealing reliability, response speed and service life of the entire valve. In the existing technology, the diaphragm and its corresponding fluid passage of the electric valve are usually designed in a circular shape. Although this design can meet the basic requirements under normal working conditions, in the engine, due to the heat dissipation of the engine, the water temperature range is wide and the rapid cooling and hot mode alternates. When the circular diaphragm is subjected to fluid pressure and action, its deformation is consistent in all directions. However, in practical applications, especially when the valve body structure leads to an uneven flow field, this uniform deformation cannot provide optimal sealing performance. When the medium temperature switches between cold and hot, the thermal expansion and contraction effect of the diaphragm material further exacerbates the risk of poor sealing, easily leading to internal leakage. To address these issues, we provide an electrically controlled valve with an elliptical diaphragm opening channel. Utility Model Content

[0003] The purpose of this invention is to provide an electrically controlled valve with an elliptical diaphragm opening channel. By using an elliptical diaphragm, the sealing performance at the elliptical groove port position can be improved.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is an electrically controlled valve with an elliptical diaphragm opening channel, including a pilot control valve and a valve seat located at the lower end of the pilot control valve; an elliptical groove is opened on the upper end surface of the valve seat, and an elliptical diaphragm is set at the position of the elliptical groove on the upper end surface of the valve seat; the left end of the valve seat is set as a water inlet, the right end of the valve seat is set as a drain outlet, and the diaphragm is set between the pilot control valve and the valve seat.

[0005] The present invention is further configured such that the extension port of the drain outlet protrudes from the upper port of the elliptical groove, and the extension end face of the drain outlet is flush with the upper end face of the valve seat.

[0006] The present invention is further configured such that the mounting cover fixed to the lower end face of the pilot control valve is sleeved on the diaphragm, and the lower end face of the mounting cover abuts against the upper end face of the valve seat.

[0007] The present invention is further configured such that four diagonally distributed mounting holes are provided on the upper end face of the valve seat, and the valve seat is connected to the mounting cover by bolts passing through the mounting holes.

[0008] The present invention is further configured such that an annular groove is provided on the upper end face of the valve seat located outside the elliptical groove, and a positioning ring located inside the annular groove is fixed on the lower end face of the diaphragm.

[0009] The present invention is further configured such that an inlet pipe is provided on the end face of the inlet, and the spiral part of the outer wall of the inlet pipe is screwed into the spiral groove inside the inlet. A sealing ring is provided on the end face of the inlet pipe inside the inlet.

[0010] The present invention is further configured such that a water outlet pipe is provided on the end face of the drain outlet, and the spiral part of the outer wall of the water outlet pipe is screwed into the spiral groove inside the drain outlet. A sealing ring II is provided on the end face of the water outlet pipe inside the drain outlet.

[0011] This utility model has the following beneficial effects: By completely covering the elliptical groove with an elliptical diaphragm, the elliptical diaphragm effectively separates the elliptical groove from the drain outlet. Hot water has a greater impact on the major axis of the ellipse and a smaller impact on the minor axis; cold water has a smaller impact on the major axis and a greater impact on the minor axis. Therefore, using an elliptical diaphragm, compared to a circular diaphragm, can improve the sealing performance at the port of the elliptical groove. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure and appearance of this utility model.

[0014] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the valve seat in this utility model.

[0016] Figure 4 This is a top view of the valve seat in this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1-Pilot control valve, 101-Assembly cover, 2-Valve seat, 201-Sealing ring one, 202-Sealing ring two, 203-Water inlet, 204-Annular groove, 205-Drain outlet, 206-Oval groove, 207-Assembly hole, 3-Water inlet pipe, 4-Water outlet pipe, 5-Diaphragm, 501-Positioning ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0019] Please see Figures 1 to 4 This utility model relates to an electrically controlled valve with an elliptical diaphragm opening channel, comprising a pilot control valve 1 and a valve seat 2 located at the lower end of the pilot control valve 1; an elliptical groove 206 is formed on the upper end surface of the valve seat 2, and an elliptical diaphragm 5 is disposed on the upper end surface of the valve seat 2 at the position of the elliptical groove 206. The elliptical diaphragm 5 is beneficial for maintaining sealing performance under alternating hot and cold conditions. The left end of the valve seat 2 is configured as a water inlet 203, and the right end of the valve seat 2 is configured as a drain outlet 205. The diaphragm 5 is designed with... The valve seat 2, located between the pilot control valve 1 and the valve seat 2, has an annular groove 204 on its upper surface, which is located around the elliptical groove 206. A positioning ring 501 is fixed on the lower end face of the diaphragm 5, which is located inside the annular groove 204. The positioning ring 501 is located in the annular groove 204, which limits the positioning ring 501, thereby limiting the diaphragm 5 and ensuring that the diaphragm 5 is stably located at the upper end of the elliptical groove 206, so that the diaphragm 5 will not shake randomly. With the above structure in use, during the flow of cold or hot water from the inlet 203 to the outlet 205, the diaphragm 5 is in an elastic expanded state. Among them, hot water has a greater impact on the major axis of the ellipse of the diaphragm 5, and a smaller impact on the minor axis of the ellipse of the diaphragm 5. Meanwhile, cold water has a smaller impact on the major axis of the ellipse of the diaphragm 5, but a larger impact on the minor axis of the ellipse of the diaphragm 5. Therefore, in summary, the use of an elliptical diaphragm 5 improves the sealing performance at the port of the elliptical groove 206.

[0020] Specifically, the extension port of the drain outlet 205 protrudes from the upper port of the elliptical groove 206, and the extension end face of the drain outlet 205 is flush with the upper end face of the valve seat 2. The mounting cover 101 fixed to the lower end face of the pilot control valve 1 is sleeved on the diaphragm 5, and the lower end face of the mounting cover 101 abuts against the upper end face of the valve seat 2. The upper end face of the valve seat 2 has four diagonally distributed mounting holes 207. The valve seat 2 is connected to the mounting cover 101 by bolts passing through the mounting holes 207. The mounting cover 101 abuts against the valve seat 2, thereby holding the diaphragm 5 in place, so that the diaphragm 5 is stably attached to the upper end face of the valve seat 2. At the same time, the extension end face of the drain outlet 205 is flush with the upper end face of the valve seat 2, so the diaphragm 5 also abuts against the extension end face of the drain outlet 205, thereby separating the drain outlet 205 from the elliptical groove 206.

[0021] The inlet 203 has an inlet pipe 3 on its end face, and the spiral part of the outer wall of the inlet pipe 3 is screwed into the spiral groove inside the inlet 203. A sealing ring 201 is provided on the end face of the inlet pipe 3 inside the inlet 203. The outlet 205 has an outlet pipe 4 on its end face, and the spiral part of the outer wall of the outlet pipe 4 is screwed into the spiral groove inside the outlet 205. A sealing ring 202 is provided on the end face of the outlet pipe 4 inside the outlet 205. The inlet pipe 3 and outlet pipe 4 are screwed into the inlet 203 and outlet 205 respectively, so that the inlet pipe 3 and outlet pipe 4 can be directly assembled on the valve seat 2. At the same time, through the use of sealing ring 201 and sealing ring 202, the inlet pipe 3 and outlet pipe 4 will abut against sealing ring 201 and sealing ring 202 respectively, thereby improving the sealing after the inlet pipe 3 and outlet pipe 4 are assembled.

[0022] The operation process of this embodiment is as follows: First, after the entire device is installed on the engine, the hot or cold water generated in the engine will flow into the valve seat 2 from the inlet 203. Since the diaphragm 5 is mounted on the valve seat 2 located above the elliptical groove 206, the diaphragm 5 separates the elliptical groove 206 and the drain outlet 205. After the hot or cold water flows into the interior of the elliptical groove 206 from the inlet 203, the hot or cold water will permeate into the interior of the pilot control valve 1 from the diaphragm 5, and then flow directly into the drain outlet 205 and be discharged from the outlet pipe 4.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An electrically controlled valve with an elliptical diaphragm opening passage, comprising a pilot control valve (1) and a valve seat (2) located at the lower end position of the pilot control valve (1); characterized in that: The upper end face of the valve seat (2) is provided with an elliptical groove (206). An elliptical diaphragm (5) is provided on the upper end face of the valve seat (2) at the position of the elliptical groove (206). The left end of the valve seat (2) is provided as a water inlet (203), and the right end of the valve seat (2) is provided as a drain outlet (205). The diaphragm (5) is located between the pilot control valve (1) and the valve seat (2).

2. The electrically controlled valve having an elliptical diaphragm opening passage according to claim 1, characterized by, The extension port of the drain outlet (205) is exposed from the upper port of the elliptical groove (206), and the extension end face of the drain outlet (205) is flush with the upper end face of the valve seat (2).

3. The electrically controlled valve with an elliptical diaphragm opening channel according to claim 1, characterized in that, The mounting cover (101) fixed to the lower end face of the pilot control valve (1) is sleeved on the diaphragm (5), and the lower end face of the mounting cover (101) abuts against the upper end face of the valve seat (2).

4. The electrically controlled valve with an elliptical diaphragm opening channel according to claim 3, characterized in that, The upper end face of the valve seat (2) is provided with four diagonally distributed assembly holes (207), and the valve seat (2) is connected to the assembly cover (101) by bolts passing through the assembly holes (207).

5. The electrically controlled valve with an elliptical diaphragm opening channel according to claim 1, characterized in that, An annular groove (204) is provided on the upper end face of the valve seat (2) located around the elliptical groove (206), and a positioning ring (501) is fixed on the lower end face of the diaphragm (5) inside the annular groove (204).

6. The electrically controlled valve with an elliptical diaphragm opening channel according to claim 1, characterized in that, The end face of the inlet (203) is provided with an inlet pipe (3), and the spiral part of the outer wall of the inlet pipe (3) is screwed into the spiral groove inside the inlet (203). The end face of the inlet pipe (3) inside the inlet (203) is provided with a sealing ring (201).

7. The electrically controlled valve with an elliptical diaphragm opening channel according to claim 1, characterized in that, The drain outlet (205) has a water outlet pipe (4) on its end face, and the spiral part of the outer wall of the water outlet pipe (4) is screwed into the spiral groove inside the drain outlet (205). The end face of the water outlet pipe (4) inside the drain outlet (205) is provided with a sealing ring (202).

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