Pressure valve device

Abstract

The invention 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 regulating technology, and more specifically, to a pressure valve device. Background Art

[0002] When using a coffee machine, hot water with a certain pressure is needed to extract coffee. In order to meet the different needs of different people for coffee taste and quality, the multifunctional coffee machine provides hot water with different pressures to the brewing chamber by setting a pressure regulating structure in the water circuit to make coffee, thereby obtaining coffee drinks with different tastes. However, the existing pressure regulating structure has the defects of complex structure, high cost and inconvenient use. In order to avoid the problem of dripping at the outlet caused by the release of water circuit pressure after the extraction is completed, the current coffee machine conventionally uses a solenoid valve pressure relief structure, which requires adding one or more solenoid valves, further increasing the equipment cost. Summary of the invention

[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 view of 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, including: a solenoid valve, the solenoid valve has a first port and a second port that are electrically connected; a first valve body, the first valve body has a first valve cavity, a first water inlet port, a first water outlet port and a first reflux port, one end of the first water inlet port, the first water outlet port and the first reflux port are respectively connected to the first valve cavity, and the other end of the first water outlet port is connected to the first port of the solenoid valve; a second valve body, the second valve body has a second valve cavity, a second water inlet port, a second water outlet port and a second reflux 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; a 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; a first one-way valve is arranged on the return path 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 open in the direction from the second water inlet port to the second valve chamber.

[0010] According to an embodiment of the pressure valve device described in the present application, one end of the second water inlet port is connected to 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 an 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 respectively connected to the first valve body and the second valve body located on both sides of the solenoid valve.

[0012] According to an embodiment of the pressure valve device described in the present application, a waste water outlet is also 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: the pressure valve device according to the embodiment of the present application sets a reflux passage connecting the valve cavities of the first valve body and the second valve body between the two valve bodies, and sets a first one-way valve that conducts only in the direction from the second valve cavity to the first valve cavity in the reflux passage; when the load device connected to the second water outlet port of the second valve body completes the 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 automatically released through the reflux passage, thereby avoiding the problem of dripping at the outlet due to the release of water circuit pressure. The pressure valve device according to the embodiment of the present application does not need to set up an additional solenoid valve, and the pressure relief structure is simple and convenient, which reduces the equipment cost. 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 It 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 a second valve body in the pressure valve device is shown.

[0019] Explanation of the accompanying drawings: 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 check valve; 26-multi-way expansion port; 30-second valve body; 31-second valve body; 32-second water inlet port; 33-second check valve; 34-second water outlet port; 35-pressure regulating port; 36-third check valve; 37-second reflux port; 40-reflux pipe; 41-first end; 42-second end; 51, 52, 53, 54, 55-arrows. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. In addition, the embodiments in the present application and the features in the embodiments may be combined with each other in the absence of conflict.

[0021] Figure 1 FIG. 1 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 Combination 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 respectively arranged on the left and right sides of the solenoid valve 10, and are respectively connected to the first valve body 20 and the second valve body 30 located on the left and right sides of the solenoid valve 10. The wastewater outlet 13 is arranged at the bottom of the solenoid valve 10. When the solenoid valve 10 is powered on, the first port 11 and the second port 12 are connected. When the solenoid valve 10 is powered off, the first port 11 is connected to the wastewater outlet 13. For further reference Figure 2 Combination Figure 3 As shown, the first valve body 20 has a first valve cavity 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 is horizontally extended and arranged at the front side of the first valve body 20, one end of the first water inlet port 22 is connected to the first valve cavity 21, and the other end is connected to an external water supply source such as a water pump. The first water outlet port 23 is horizontally extended and arranged on the left side of the first valve body 20, one end of the first water outlet port 23 is connected to the first valve cavity 21, and the other end is connected to the first port 11 of the solenoid valve 10. The first return port 24 is longitudinally extended and arranged at the lower part of the first valve body 20, one end of the first return port 24 is connected to the first valve cavity 21 through the first check valve 25, and the first check valve 25 only conducts the passage between the first return port 24 and the first valve cavity 21 in the direction from the first return port 24 to the first valve cavity 21. The other end of the first return port 24 is connected to the second end 42 of the return pipe 40.

[0023] See also Figure 2 Combination Figure 4 As shown, the second valve body 30 has a second valve cavity 31, a second water inlet port 32, a second water outlet port 34 and a second reflux port 37. The second water inlet port 32 is horizontally extended and arranged on the right side of the second valve body 30. One end of the second water inlet port 32 is connected to the second valve cavity 31 through a second one-way valve 33. The second one-way valve 33 only conducts the passage between the second water inlet port 32 and the second valve cavity 31 in the direction from the second water inlet port 32 to the second valve cavity 31. The other end of the second water inlet port 32 is connected to the second port 12 of the solenoid valve 10 to receive the water flow 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 powered on. The second water outlet port 34 is longitudinally extended and arranged at the lower part of the second valve body 30. One end of the second water outlet port 34 is connected to the second valve cavity 31, and the other end is laterally extended from the lower part of the second valve body 30, so as to facilitate the 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 cavity 31 , the other end is connected to the first end 41 of the return pipe 40 , and further 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 configured as above, water flows into the first valve chamber 21 from the first water inlet port 22 of the first valve body 20 (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 into the solenoid valve 10 from the first water outlet port 23 through the first port 11 of the solenoid valve 10. The solenoid valve 10 is energized to connect the first port 11 and the second port 12, and water flows into the second water inlet port 32 of the second valve body 30 through the second port 12. The water pressure opens the second one-way valve 33 and flows into the second valve cavity 31, and then flows into the external load device through the second water outlet port 34 to perform work (see Figure 1 As shown by arrow 52 in the figure, the load device performs work, and pressure adjustment is required due to the different pressures required in different situations. 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, and one end of the pressure regulating port 35 is communicated with the second valve cavity 31 through a third one-way valve 36. The third one-way valve 36 only conducts 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, so that it can be used as a pressure relief device of the constant pressure waterway system (see Figure 1 Indicated by the middle arrow 53). 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 be realized, which has a wider range of applications. When the load device completes the 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 to automatically release the pressure through the reflux path composed of the second reflux port 37, the reflux pipe 40 and the first reflux port 24. 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 The pressure valve device 100 according to the above embodiment of the present application can automatically release the pressure in the water circuit after the load has completed the work, thereby avoiding the problem of dripping at the second water outlet port 34. The water circuit of the pressure valve device 100 according to the above embodiment of the present application can set the maximum output pressure, so as to accurately control the specific optimal pressure of the load device such as a coffee machine for extraction. In addition, the pressure regulating port 35 cooperates with the visual pressure gauge and the pressure regulating valve to manually adjust the pressure, which can be suitable for professional coffee makers to manually fine-tune different coffees, so as to achieve the ultimate taste and quality of coffee.

[0025] According to further embodiments of the present application, see Figure 1 Combination 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 paths with a conduction pressure lower than that of the second one-way valve 33 (see Figure 1 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 check 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 from the multi-way extension port 26, thus achieving the function of multiple pressure outputs of one pressure valve device. Therefore, in the case where the first valve body 10 is not provided with the multi-way extension port 26, the second check valve 33 is not necessary.

[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 substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope 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) which 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 connected to the first valve cavity (21), and the other end of the first water outlet port (23) being connected to 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 connected to the second valve cavity (31), and the other end of the second water inlet port (32) being connected to 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 arranged on a reflux path that flows 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 in communication with the first valve chamber (21) via a first one-way valve (25) that conducts 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 also provided with a pressure regulating port (35), one end of which is connected to the second valve cavity (31) via a third one-way valve (36) that conducts 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 also provided with a pressure regulating port (35), one end of the pressure regulating port (35) is in communication with the second valve chamber (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 also provided with a multi-way expansion port (26) communicating with the first valve chamber (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 in communication with the second valve chamber (32) via a second one-way valve (33) that conducts only in a 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 arranged on opposite sides of the solenoid valve (10) and are respectively connected to the first valve body (20) and the second valve body (30) located on the two sides of the solenoid valve (10).

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

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