System one-way valve capable of feeding air and removing extracted beverage residues

Abstract

The system one-way valve comprises a valve body, a water inlet end, a water outlet end, an air inlet end and a connecting channel are arranged in the valve body, the connecting channel is respectively communicated with the water inlet end, the water outlet end and the air inlet end, and the air inlet end is provided with an air inlet. The silica gel plug comprises a sealing part formed by protruding forwards and a ring part surrounding the periphery of the sealing part, the sealing part has elasticity keeping the trend of sealing the air inlet, a plurality of vent holes arranged at intervals are formed in the ring part, the silica gel plug further seals the air inlet under the pressure effect of the connecting channel, and the sealing part is in the state that air is blown into the valve body through the air inlet. The sealing part deforms to open the air inlet, and air sequentially passes through the air inlet and the vent hole to flow into the valve body. The valve has the advantages that the silica gel plug plays a role of a one-way valve at the air inlet, gas can blow away residual water and objects in the valve body, the silica gel plug is convenient to install in the valve body, and the production cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of beverage extraction equipment technology, and in particular to a system check valve that can introduce air to remove residues from extracted beverages. Background Technology

[0002] Beverage extraction equipment is a device that uses high-pressure, rapid heating of water to extract a liquid from a container. It includes a water tank, a water pump, a heating boiler, and an extraction mechanism. During beverage production, water is pumped from the tank to the heating boiler for heating. The heated water then flows into the extraction chamber of the extraction mechanism for extraction, thus completing the beverage preparation. However, after extraction, particles such as coffee powder or tea leaves often remain in the equipment's piping. These residues can easily mold in the piping, affecting the extraction results of subsequent batches. Furthermore, medicinal particles may also remain in the piping, potentially causing incompatibility between the remaining particles and the medicinal particles used in the next extraction, thus affecting the overall extraction efficiency.

[0003] Existing beverage extraction equipment uses an air intake channel to remove residues from the pipes. To prevent pressure loss in the air intake channel during extraction, a one-way valve is installed at the air inlet. This one-way valve allows external gas to enter the equipment while preventing gas and liquid from flowing out. Currently, the one-way valve in beverage extraction equipment, as shown in the utility model patent CN201620782013.3 (authorization announcement number CN206080202U), includes a valve body, a silicone head, and a spring. The valve body has two channels, with the silicone head and spring respectively located in the two channels. One end of the spring acts on the silicone head, enabling the silicone head to one-way close the inlet of its respective channel.

[0004] While the aforementioned one-way valve can seal the inlet of the channel in one direction, it has many components, including a silicone head and a spring. Therefore, installing the one-way valve within the channel is cumbersome and complex. For example, if the silicone head, mounted on the spring end, shifts during assembly, it will affect the sealing effect of the one-way valve at the channel inlet. Furthermore, water usually flows through the channels of beverage extraction equipment, and after prolonged use, the spring may rust, thus affecting the one-way valve's performance. Additionally, some beverage extraction equipment uses solenoid valves instead of one-way valves; however, solenoid valves are more expensive, increasing the production cost of the beverage extraction equipment and hindering its sale and profitability. Therefore, further improvements are needed to the system one-way valve that allows air intake to remove beverage residue during extraction. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a system check valve with a reasonable structure and low cost that can remove residues from extracted beverages by air intake, in light of the above-mentioned existing technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a one-way valve for removing residues from extracted beverages by air intake includes a valve body, which has a water inlet, a water outlet, an air inlet, and a connecting channel. The connecting channel is connected to the water inlet, the water outlet, and the air inlet respectively. The air inlet has an air inlet. The feature is that the air inlet has an integrally formed silicone plug, which includes a sealing part that protrudes forward and a ring around the sealing part. The sealing part has elasticity to maintain the tendency to seal the air inlet. The ring has a plurality of spaced vent holes. Under the pressure of the connecting channel, the sealing part further seals the air inlet. When air is blown into the valve body through the air inlet, the sealing part deforms to open the air inlet, and the gas flows into the valve body through the air inlet and the vent holes in sequence.

[0007] Preferably, the inner surface of the silicone plug is arched. This shape of the sealing part gives the silicone plug better elastic recovery. After the sealing part is deformed by pressure, the silicone plug can quickly recover its deformation and re-seal the air inlet when the pressure is removed.

[0008] To ensure the sealing portion effectively seals the air inlet, preferably, the air inlet is wider on the outside and narrower on the inside, while the sealing portion is narrower on the outside and wider on the inside. The inner diameter of the outer end of the air inlet is smaller than the outer diameter of the sealing portion. The sealing portion's protrusion is narrower on the outside and wider on the inside, and the air inlet is wider on the outside and narrower on the inside, allowing the sealing portion to easily fit into the air inlet in its natural state. The inner diameter of the outer end of the air inlet is smaller than the outer diameter of the sealing portion, causing the sealing portion to deform within the air inlet, thereby sealing the air inlet.

[0009] Furthermore, the cross-section of the air inlet is a first inclined plane with a larger outer diameter and a smaller inner diameter, while the cross-section of the sealing part is a second inclined plane with a smaller outer diameter and a larger inner diameter. The inclination of the second inclined plane is greater than that of the first inclined plane. The inclination of the first inclined plane is less than that of the second inclined plane, so that the sealing part is in a state of being plugged into the air inlet, and the sealing part and the air inlet are in line contact, which makes the sealing effect of the sealing part sealing the air inlet better. In addition, there is a certain space between the air inlet and the sealing part, which allows the sealing part to deform or return to its original shape.

[0010] To allow gas to enter the valve body, preferably, the air inlet end is provided with a connector. One end of the connector is exposed outside the valve body and connected to the air pump, while the other end of the connector is the air inlet. The silicone plug is located behind the air inlet of the connector. The connector is connected to the air pump, and gas flows into the valve body through the connector and silicone plug located at the air inlet end.

[0011] To allow fluid to flow into and out of the valve body, preferably, two connecting pipes are included. One end of each connecting pipe is exposed outside the valve body, and the other ends are located inside the inlet and outlet ends, respectively. The connecting pipe located at the inlet end is connected to the high-pressure pump, and the connecting pipe located at the outlet end is connected to other channels. When the high-pressure pump is working, fluid flows into the connecting channel from the connecting pipe at the inlet end and then flows out of the connecting channel from the connecting pipe at the outlet end.

[0012] To improve the sealing of the connection between the connector and the connecting pipe and the valve body, it is preferable to include multiple sealing rings, which are disposed between the connector and the air inlet end, and between the connecting pipe and the water inlet end and the water outlet end.

[0013] To prevent the connector and connecting pipe from detaching from the valve body, preferably, the water inlet, water outlet, and air inlet are all provided with slots, and a retaining spring is engaged in the slot to restrict the outward movement of the connector or connecting pipe.

[0014] Compared with the prior art, the advantages of this utility model are as follows: The system has a silicone plug inside the one-way valve. The sealing part of the silicone plug has elasticity that maintains the tendency to seal the air inlet, preventing fluid in the valve body from flowing out. The water inlet is connected to a high-pressure pump. When the high-pressure pump is working, the water pressure in the connecting channel will increase. Under the action of water pressure, the sealing part of the silicone plug will be further inserted into the air inlet to seal the air inlet. The ring part abuts against the outer periphery of the air inlet, thereby sealing the air inlet with the silicone plug. When the high-pressure pump stops working, the water pressure in the connecting channel will be released. Under the action of its own elastic force, the silicone plug will return to its natural state. Then, the air pump blows air into the valve body, which will cause the sealing part on the silicone plug to deform, thereby opening the air inlet and allowing gas to flow into the valve body through the air inlet and the vent. Therefore, the silicone plug acts as a one-way valve at the air inlet, preventing gas from flowing out of the valve body through the air inlet while allowing gas to flow in. The gas can blow away residual water and objects inside the valve body, thus achieving the function of blowing away residue. The silicone plug is easy to install inside the valve body, has better performance, lower production cost, and longer service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional view of an embodiment of the present invention (with the silicone plug sealing the air inlet);

[0018] Figure 4 This is a cross-sectional view of an embodiment of the present invention (with the silicone plug open at the air inlet);

[0019] Figure 5 This is a schematic diagram of the connector structure in an embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the silicone plug in an embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-6 The image shown is the preferred embodiment of this utility model.

[0023] like Figures 1-4As shown, the system check valve in this embodiment includes a valve body 1, a connector 2, a silicone plug 3, a connecting pipe 4, a sealing ring 5, and a snap ring 6. The valve body 1 has a water inlet 11, a water outlet 12, an air inlet 13, and a connecting channel 14. The connecting channel 14 communicates with the water inlet 11, the water outlet 12, and the air inlet 13, respectively. The water inlet 11 and the water outlet 12 are each equipped with a connecting pipe 4. One end of each connecting pipe 4 is exposed outside the valve body 1, and the other end is located inside the water inlet 11 and the water outlet 12, respectively. The connecting pipe 4 located inside the water inlet 11 is connected to a high-pressure pump, and the connecting pipe 4 located inside the water outlet 12 is connected to other channels. When the high-pressure pump is working, fluid flows from the connecting pipe of the water inlet 11 into the connecting channel and then flows out of the connecting channel from the connecting pipe of the water outlet 12. The air inlet 13 is equipped with a connector 2. One end of the connector 2 is exposed outside the valve body 1 and communicates with an air pump, and the other end of the connector 2 is an air inlet 21. Furthermore, the air inlet 13 of this embodiment is provided with an integrally formed silicone plug 3. The silicone plug 3 is located behind the air inlet 21 of the connector 2. The inner surface 33 of the silicone plug 3 is arched. The silicone plug 3 includes a sealing part 31 that protrudes forward and a ring part 32 surrounding the sealing part 31. The sealing part 31 has the elasticity to maintain the sealing of the air inlet 21. The ring part 32 extends backward to form a ring wall. The ring wall of the ring part 32 is provided with a plurality of spaced vent holes 321. Under the pressure of the connecting channel 14, the sealing part 31 further seals the air inlet 21 and the ring part 32 abuts against the outer periphery of the air inlet 21. When air is blown into the valve body 1 through the air inlet 21, the sealing part 31 deforms to open the air inlet 21. The gas flows into the valve body 1 through the air inlet 21 and the vent holes 321 in sequence. The gas can blow away the water and objects remaining in the valve body 1, playing the role of blowing away the residue. In addition, the sealing ring 5 in this embodiment is provided between the connector 2 and the air inlet 13 and between the connecting pipe 4 and the water inlet 11 and the water outlet 12, so that the sealing performance of the connector 2 and the connecting pipe 4 and the valve body 1 is better; and the water inlet 11, the water outlet 12 and the air inlet 13 in this embodiment are all provided with a groove 15, and a retaining spring 6 for restricting the connector 2 or the connecting pipe 4 from moving outward is engaged in the groove 15, thereby preventing the connector 2 and the connecting pipe 4 from detaching from the valve body 1.

[0024] like Figures 3-6As shown, in this embodiment, the air inlet 21 of the connector 2 is wider on the outside and narrower on the inside, while the sealing part 31 is narrower on the outside and wider on the inside. This allows the sealing part 31 to be easily inserted into the air inlet 21 under water pressure. The inner diameter of the outer end of the air inlet 21 is smaller than the outer diameter of the sealing part 31. Furthermore, the cross-section of the air inlet 21 in this embodiment is a first inclined surface 7a, wider on the outside and narrower on the inside, while the cross-section of the sealing part 31 is a second inclined surface 7b, narrower on the outside and wider on the inside. The inclination of the second inclined surface 7b is greater than that of the first inclined surface 7a, and the inclination of the first inclined surface 7a is less than that of the second inclined surface 7b. This ensures that the sealing part 31 is in a state of being inserted into the air inlet 21, with the sealing part 31 in line contact with the air inlet 21, resulting in a better sealing effect. Additionally, there is a certain space between the air inlet 21 and the sealing part 31, allowing the sealing part 31 to deform or return to its original shape.

[0025] The workflow of this embodiment is as follows: the connecting pipe 4 of the water inlet end 11 of the valve body 1 is connected to the high-pressure pump, the connecting pipe 4 of the water outlet end 12 is connected to other channels, the connector 2 of the air inlet end 13 is connected to the air pump, and the silicone plug 3, in its natural state, has an elastic sealing part 31 that tends to seal the air inlet 21, preventing fluid in the connecting channel 14 from flowing out; when the high-pressure pump is working, water flows into the connecting channel 14 through the water inlet end 11, increasing the water pressure in the connecting channel 14. Under the action of the water pressure, the silicone plug 3 moves further towards the air inlet 21. The sealing part 31 further seals the air inlet 21, and the water in the connecting channel 14 flows out from the water outlet 12. When the high-pressure pump stops working, the water pressure in the connecting channel 14 will be released, and the sealing part 31 of the silicone plug 3 will return to its natural state, sealing the air inlet. Then the air pump works, and the air pump blows air through the air inlet 21, causing the sealing part 31 to deform and open the air inlet 21. The gas can flow into the valve body 1 through the air inlet 21 and the vent hole 321, and the gas blows away the water and objects remaining in the valve body 1, playing the role of blowing away the residue.

Claims

1. A one-way valve for removing residues from extracted beverages by air intake, comprising a valve body (1), wherein the valve body (1) is provided with a water inlet (11), a water outlet (12), an air inlet (13), and a connecting channel (14), wherein the connecting channel (14) is respectively connected to the water inlet (11), the water outlet (12), and the air inlet (13), and the air inlet (13) is provided with an air inlet (21), characterized in that: The air inlet (13) is provided with an integrally formed silicone plug (3). The silicone plug (3) includes a sealing part (31) protruding forward and a ring part (32) surrounding the sealing part (31). The sealing part (31) has elasticity to maintain the tendency to seal the air inlet (21). The ring part (32) is provided with a plurality of spaced vent holes (321). Under the pressure of the connecting channel (14), the silicone plug (3) further seals the air inlet (21). When air is blown into the valve body (1) through the air inlet (21), the sealing part (31) deforms to open the air inlet (21). The gas flows into the valve body (1) through the air inlet (21) and the vent holes (321) in sequence.

2. The system check valve according to claim 1, characterized in that: The inner surface (33) of the silicone plug (3) is arched.

3. The system check valve according to claim 2, characterized in that: The air inlet (21) is larger on the outside and smaller on the inside, and the sealing part (31) is smaller on the outside and larger on the inside. The inner diameter of the outer end of the air inlet (21) is smaller than the outer diameter of the sealing part (31).

4. The system check valve according to claim 3, characterized in that: The air inlet (21) has a first inclined surface (7a) with a larger outer diameter and a smaller inner diameter, and the sealing part (31) has a second inclined surface (7b) with a smaller outer diameter and a larger inner diameter. The inclination of the second inclined surface (7b) is greater than that of the first inclined surface (7a).

5. The system check valve according to any one of claims 1 to 4, characterized in that: The air inlet (13) is provided with a connector (2). One end of the connector (2) is exposed outside the valve body (1) and connected to the air pump. The other end of the connector (2) is an air inlet (21). The silicone plug (3) is located behind the air inlet (21) of the connector (2).

6. The system check valve according to claim 5, characterized in that: It also includes two connecting pipes (4), one end of which is exposed outside the valve body (1), and the other end of which is located inside the inlet (11) and outlet (12) respectively.

7. The system check valve according to claim 6, characterized in that: It also includes multiple sealing rings (5), which are disposed between the connector (2) and the air inlet (13) and between the connecting pipe (4) and the water inlet (11) and the water outlet (12).

8. The system check valve according to claim 6, characterized in that: The water inlet (11), water outlet (12) and air inlet (13) are all provided with slots (15), and a retaining spring (6) for restricting the outward movement of the connector (2) or connector (4) is engaged in the slots (15).

Images