Pressure valve device

Abstract

The utility model relates to a pressure valve device which comprises an electromagnetic valve, a first valve body, a second valve body and a backflow pipe. The first valve body is provided with a first valve cavity, a first water inlet port, a first water outlet port and a first backflow port, wherein the first water inlet port, the first water outlet port and the first backflow port are communicated with the first valve cavity. The other end of the first water outlet port is communicated with a first port of the electromagnetic valve. The second valve body is provided with a second valve cavity, a second water inlet port, a second water outlet port and a second backflow port, wherein the second water inlet port, the second water outlet port and the second backflow port are communicated with the second valve cavity. The other end of the second water inlet port is communicated with the second port of the electromagnetic valve. The backflow pipe is communicated with the second backflow port and the first backflow port, and the first one-way valve is arranged on the backflow path and is only communicated in the direction from the second valve cavity to the first valve cavity. The pressure valve device automatically relieves pressure through the backflow channel, and the problem that water drips from an outlet is avoided.

Description

Technical Field

[0001] The present application relates to a water supply pipeline pressure regulation technology, and more specifically, to a pressure valve device. Background Art

[0002] When used, coffee machines require hot water at a certain pressure to extract coffee. To meet the varying taste and quality requirements of different people, multifunctional coffee machines incorporate a pressure-regulating structure in the water circuit to provide hot water at varying pressures to the brewing chamber, resulting in coffee drinks with varying tastes. However, existing pressure-regulating structures suffer from complex structures, high costs, and inconvenience. To avoid dripping at the outlet due to pressure release after extraction, current coffee machines typically use a solenoid valve pressure relief structure, requiring the addition of one or more solenoid valves, further increasing equipment costs. Utility Model Content

[0003] The technical problem to be solved by the present application is to provide a pressure valve device which can replace the conventional solenoid valve pressure relief structure and can automatically relieve pressure in response to the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present application to solve its technical problem is: a pressure valve device is proposed, comprising: a solenoid valve, the solenoid valve having a first port and a second port that are electrically connected; a first valve body, the first valve body having a first valve cavity, a first water inlet port, a first water outlet port and a first return port, one end of the first water inlet port, the first water outlet port and the first return port being respectively connected to the first valve cavity, and the other end of the first water outlet port being connected to the first port of the solenoid valve; a second valve body, the second valve body having a second valve cavity, a second water inlet port, a second water outlet port and a second return port, One end of the second water inlet port, the second water outlet port and the second return port are respectively connected to the second valve cavity, and the other end of the second water inlet port is connected to the second port of the solenoid valve; the return pipe, the return pipe has a first end and a second end, the first end of the return pipe is connected to the other end of the second return port, and the second end of the return pipe is connected to the other end of the first return port; the first one-way valve is arranged on the return path flowing from the second valve cavity through the second return port, the return pipe and the first return port into the first valve cavity, so that the return path is only conductive in the direction from the second valve cavity to the first valve cavity.

[0005] According to an embodiment of the pressure valve device described in the present application, one end of the first return port is communicated with the first valve chamber via a first one-way valve that is conductive only in a direction from the first return port to the first valve chamber.

[0006] According to one embodiment of the pressure valve device described in the present application, the second valve body is further provided with a pressure regulating port, one end of which is connected to the second valve cavity through a third one-way valve that conducts only in the direction from the second valve cavity to the pressure regulating port.

[0007] According to one embodiment of the pressure valve device described in the present application, the second valve body is further provided with a pressure regulating port, one end of the pressure regulating port is communicated with the second valve cavity, and the other end of the pressure regulating port is externally connected to a pressure regulator.

[0008] According to one embodiment of the pressure valve device described in the present application, the first valve body is further provided with a multi-way expansion port communicating with the first valve chamber.

[0009] According to one embodiment of the pressure valve device described in the present application, the pressure valve device also includes a second one-way valve, which is arranged on the connecting passage connecting the second water inlet port to the second valve chamber, so that the connecting passage is only conductive in the direction from the second water inlet port to the second valve chamber.

[0010] According to one embodiment of the pressure valve device described in the present application, one end of the second water inlet port is communicated with the second valve chamber via a second one-way valve that is conductive only in a direction from the second water inlet port to the second valve chamber.

[0011] According to one embodiment of the pressure valve device described in the present application, the first port and the second port of the solenoid valve are respectively arranged on opposite sides of the solenoid valve and are connected to the first valve body and the second valve body located on both sides of the solenoid valve, respectively.

[0012] According to one embodiment of the pressure valve device described in the present application, a waste water outlet is further provided at the bottom of the solenoid valve.

[0013] The implementation of the pressure valve device of the present application has the following beneficial effects: According to the pressure valve device of the embodiment of the present application, a reflux passage is provided between the first valve body and the second valve body to connect the valve cavities of the two valve bodies, and a first one-way valve that conducts only in the direction from the second valve cavity to the first valve cavity is provided in the reflux passage. When the load device connected to the second water outlet port of the second valve body completes its work and the water inflow stops, the water pressure in the second valve body automatically opens the first one-way valve, and the pressure is immediately and automatically released through the reflux passage, thereby avoiding the problem of water dripping at the outlet due to the release of water pressure. The pressure valve device according to the embodiment of the present application does not require the additional provision of a solenoid valve, and the pressure relief structure is simple and convenient, reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0015] Figure 1 This is a schematic diagram of the overall structure of a pressure valve device according to an embodiment of the present application;

[0016] Figure 2 yes Figure 1 A partial cross-sectional view of the pressure valve device shown;

[0017] Figure 3 yes Figure 1 A partial longitudinal sectional view of a first valve body in the pressure valve device shown;

[0018] Figure 4 yes Figure 1 A partial longitudinal sectional view of the second valve body in the pressure valve device is shown.

[0019] Explanation of the accompanying numbers: 100-pressure valve device; 10-solenoid valve; 11-first port; 12-second port; 13-wastewater outlet; 20-first valve body; 21-first valve chamber; 22-first water inlet port; 23-first water outlet port; 24-first reflux port; 25-first one-way valve; 26-multi-way expansion port; 30-second valve body; 31-second valve chamber; 32-second water inlet port; 33-second one-way valve; 34-second water outlet port; 35-pressure regulating port; 36-third one-way valve; 37-second reflux port; 40-reflux pipe; 41-first end; 42-second end; 51, 52, 53, 54, 55-arrows. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely intended to explain this application and are not intended to limit this application. Furthermore, the embodiments and features of the embodiments in this application may be combined with each other unless there is a conflict.

[0021] Figure 1 FIG1 shows a schematic diagram of the structure of a pressure valve device 100 according to an embodiment of the present application. Figure 1 As shown, the pressure valve device 100 is mainly composed of a solenoid valve 10, a first valve body 20, a second valve body 30 and a return pipe 40. The first valve body 20 and the second valve body 30 are respectively arranged on opposite sides of the solenoid valve 10 and connected to the solenoid valve 10. A return pipe 40 is also connected between the first valve body 20 and the second valve body 30.

[0022] See also Figure 1 Combine Figure 2As shown, the solenoid valve 10 is a three-way valve having a first port 11, a second port 12, and a wastewater outlet 13. The first port 11 and the second port 12 are located on opposite sides of the solenoid valve 10 and communicate with the first valve body 20 and the second valve body 30 located on the left and right sides of the solenoid valve 10, respectively. The wastewater outlet 13 is located at the bottom of the solenoid valve 10. When the solenoid valve 10 is energized, the first port 11 and the second port 12 are connected. When the solenoid valve 10 is de-energized, the first port 11 is connected to the wastewater outlet 13. For further information, see Figure 2 Combine Figure 3 As shown, the first valve body 20 has a first valve chamber 21, a first water inlet port 22, a first water outlet port 23, and a first return port 24. The first water inlet port 22 extends transversely to the front side of the first valve body 20. One end of the first water inlet port 22 communicates with the first valve chamber 21, and the other end is connected to an external water supply source, such as a water pump. The first water outlet port 23 extends transversely to the left side of the first valve body 20. One end of the first water outlet port 23 communicates with the first valve chamber 21, and the other end communicates with the first port 11 of the solenoid valve 10. The first return port 24 extends longitudinally to the lower portion of the first valve body 20. One end of the first return port 24 communicates with the first valve chamber 21 via a first one-way valve 25. The first one-way valve 25 only opens the passage between the first return port 24 and the first valve chamber 21 in the direction from the first return port 24 to the first valve chamber 21. The other end of the first return port 24 communicates with the second end 42 of the return pipe 40.

[0023] See also Figure 2 Combine Figure 4 As shown, the second valve body 30 has a second valve chamber 31, a second water inlet port 32, a second water outlet port 34, and a second return port 37. The second water inlet port 32 extends transversely to the right side of the second valve body 30. One end of the second water inlet port 32 communicates with the second valve chamber 31 via a second one-way valve 33. The second one-way valve 33 only opens the passage between the second water inlet port 32 and the second valve chamber 31 in the direction from the second water inlet port 32 to the second valve chamber 31. The other end of the second water inlet port 32 communicates with the second port 12 of the solenoid valve 10 to receive water delivered from the first water outlet port 23 of the first valve body 20 through the solenoid valve 10 when the solenoid valve 10 is energized. The second water outlet port 34 extends longitudinally to the lower portion of the second valve body 30. One end of the second water outlet port 34 communicates with the second valve chamber 31, and the other end extends transversely from the lower portion of the second valve body 30 to facilitate connection to an external load device. The second return port 37 extends laterally and is arranged on the rear side of the second valve body 30. One end of the second return port 37 is connected to the second valve chamber 31, and the other end is connected to the first end 41 of the return pipe 40, and then connected to the first return port 24 of the first valve body 10 through the second end 42 of the return pipe 40.

[0024] In the pressure valve device 100 thus configured, water flows from the first water inlet port 22 of the first valve body 20 into the first valve chamber 21 (see Figure 1 As shown by the arrow 51 in the middle, due to the presence of the first one-way valve 25, water can only flow from the first water outlet port 23 through the first port 11 of the solenoid valve 10 into the solenoid valve 10. When the solenoid valve 10 is energized and the first port 11 and the second port 12 are connected, water flows through the second port 12 into the second water inlet port 32 of the second valve body 30. The water pressure opens the second one-way valve 33 and flows into the second valve chamber 31. Then, the water flows through the second water outlet port 34 into the external load device to perform work (see Figure 1 As shown by the arrow 52 in the middle). The load device does work, and the pressure required is different in different situations and needs to be adjusted. For this purpose, see Figure 2 As shown, the second valve body 30 is further provided with a pressure regulating port 35. The pressure regulating port 35 is arranged to extend transversely on the front side of the second valve body 30. One end of the pressure regulating port 35 is connected to the second valve cavity 31 through a third one-way valve 36. The third one-way valve 36 only opens the passage between the second valve cavity 31 and the pressure regulating port 35 in the direction from the second valve cavity 31 to the pressure regulating port 35, thereby serving as a pressure relief device for the constant pressure water system (see Figure 1 Indicated by the arrow 53 in the middle). According to different embodiments of the present application, the third one-way valve 36 is an optional option, and the third one-way valve 36 may not be set between the pressure regulating port 35 and the second valve chamber 31. By connecting an external pressure regulator at the other end of the pressure regulating port 35, a real-time variable pressure water system can also be realized, which has a wider range of applications. When the load device completes its work and the water inflow stops, the solenoid valve 10 is powered off and connected to the first port 11 and the wastewater outlet 13. The water pressure in the second valve body 30 opens the first one-way valve 25 through the reflux path composed of the second reflux port 37, the reflux pipe 40 and the first reflux port 24 to automatically release the pressure. The wastewater in the second valve body 30 is discharged from the wastewater outlet 13 of the solenoid valve 10 through the reflux path (see Figure 1 (indicated by arrow 55). The pressure valve device 100 according to the above-described embodiment of the present application can automatically release pressure in the water circuit after the load has completed work, thereby preventing dripping from the second water outlet port 34. The water circuit of the pressure valve device 100 according to the above-described embodiment of the present application can be set to a maximum output pressure, thereby precisely controlling the specific optimal extraction pressure of a load device such as a coffee machine. Furthermore, the pressure regulating port 35, combined with a visual pressure gauge and a pressure regulating valve, can manually adjust the pressure, allowing professional baristas to manually fine-tune the coffee for each individual coffee, ultimately achieving the ultimate in taste and quality.

[0025] According to further embodiments of the present application, see Figure 1 Combine Figure 2As shown, the first valve body 10 is further provided with a multi-way expansion port 26, one end of which is connected to the first valve chamber 21, and the other end of which can be connected to a set of expansion water channels with a conduction pressure lower than that of the second one-way valve 33 (see Figure 1 (Indicated by arrow 54 in the middle). When the water pressure entering the first valve body 20 from the first input port 22 is lower than the conduction pressure of the second one-way valve 33 between the second water inlet port 32 and the second valve chamber 31 of the second valve body 30, the water will enter the extended water path through the multi-way expansion port 26, achieving the function of multiple pressure outputs of a single pressure valve device. Therefore, if the first valve body 10 is not provided with a multi-way expansion port 26, the second one-way valve 33 is not required.

[0026] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A pressure valve device (100), characterized in that: include: A solenoid valve (10), the solenoid valve (10) having a first port (11) and a second port (12) that are electrically connected; a first valve body (20), the first valve body (20) comprising a first valve cavity (21), a first water inlet port (22), a first water outlet port (23) and a first return port (24), one end of the first water inlet port (22), the first water outlet port (23) and the first return port (24) being respectively in communication with the first valve cavity (21), and the other end of the first water outlet port (23) being in communication with the first port (11) of the solenoid valve (10); a second valve body (30), the second valve body (30) comprising a second valve cavity (31), a second water inlet port (32), a second water outlet port (34) and a second return port (37), one end of the second water inlet port (32), the second water outlet port (34) and the second return port (37) being respectively in communication with the second valve cavity (31), and the other end of the second water inlet port (32) being in communication with the second port (12) of the solenoid valve (10); a return pipe (40), the return pipe (40) having a first end (41) and a second end (42), the first end (41) of the return pipe (40) being connected to the other end of the second return port (37), and the second end (42) of the return pipe (40) being connected to the other end of the first return port (24); The first one-way valve (25) is provided on a reflux path flowing from the second valve chamber (31) through the second reflux port (37), the reflux pipe (40) and the first reflux port (24) into the first valve chamber (21), so that the reflux path is open only in the direction from the second valve chamber (31) to the first valve chamber (21).

2. The pressure valve device (100) according to claim 1, characterized in that One end of the first return port (24) is communicated with the first valve chamber (21) via a first one-way valve (25) that is conductive only in a direction from the first return port (24) to the first valve chamber (21).

3. The pressure valve device (100) according to claim 1, characterized in that The second valve body (30) is further provided with a pressure regulating port (35), one end of which is communicated with the second valve cavity (31) via a third one-way valve (36) that is conductive only in the direction from the second valve cavity (31) to the pressure regulating port (35).

4. The pressure valve device (100) according to claim 1, characterized in that The second valve body (30) is further provided with a pressure regulating port (35), one end of the pressure regulating port (35) is communicated with the second valve cavity (31), and the other end of the pressure regulating port (35) is externally connected to a pressure regulator.

5. The pressure valve device (100) according to claim 1, characterized in that The first valve body (20) is further provided with a multi-way expansion port (26) communicating with the first valve cavity (21).

6. The pressure valve device (100) according to claim 5, characterized in that The pressure valve device further comprises a second one-way valve, which is arranged on a connection passage connecting the second water inlet port to the second valve chamber, so that the connection passage is open only in a direction from the second water inlet port to the second valve chamber.

7. The pressure valve device (100) according to claim 6, characterized in that One end of the second water inlet port (32) is communicated with the second valve chamber (31) via a second one-way valve (33) that is conductive only in the direction from the second water inlet port (32) to the second valve chamber (31).

8. The pressure valve device (100) according to claim 1, characterized in that The first port (11) and the second port (12) of the solenoid valve (10) are respectively arranged on opposite sides of the solenoid valve (10) and are respectively communicated with the first valve body (20) and the second valve body (30) located on both sides of the solenoid valve (10).

9. The pressure valve device (100) according to claim 1, characterized in that A wastewater outlet (13) is also provided at the bottom of the solenoid valve (10).

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