A valve body assembly that can effectively close a waterway

Abstract

This utility model relates to the technical field of water circuit sealing, and proposes a valve body assembly that can effectively seal water circuits. It includes a valve body with a water inlet channel, and a valve core for opening and closing the water inlet channel is provided within the valve body. The valve core is axially movable within the valve body, and its first end moves along the direction of closing the water inlet channel and inserts into the water inlet channel, forming a first sealing structure. A first sealing ring is also provided on the first end of the valve core, which abuts against the outside of the water inlet channel's output end to form a second sealing structure. This design eliminates the need for a simple sealing ring; through a double sealing structure, the sealing function is greatly enhanced while maintaining a relatively stable component cost.

Description

Technical Field

[0001] This utility model relates to the technical field of water circuit sealing, specifically to a valve body assembly that can effectively seal water circuits. Background Technology

[0002] There are only two ways to control the water circuit in coffee machines on the market: one is to use a solenoid valve. Solenoid valves are convenient and effective, and can control the water circuit according to the program settings without any problems. Moreover, multiple solenoid valves can be used simultaneously to achieve functions such as pressure relief and fully automatic descaling. The water circuit structure can be customized to meet the required needs, but the cost is very high. The other method is to use a mechanical structure to control the switching of the water circuit. The most common one is the manual switch valve assembly. This assembly can meet the need to switch the water circuit and control the cost, but it also has its drawbacks. After prolonged use, the silicone seal inside the assembly will be permanently deformed, making it difficult for the assembly to close the water circuit when shutting down. This will cause water to drip during coffee brewing. In severe cases, the water circuit will be open and cannot be closed at all. Water will flow directly out through the valve body, which is a bad experience for consumers. Utility Model Content

[0003] This invention proposes a valve body assembly that can effectively seal water passages, eliminating the need for a simple sealing ring structure. Through a double sealing structure design, the sealing function can be greatly enhanced while keeping the component cost relatively stable.

[0004] A valve body assembly designed for this purpose, which can effectively seal a water passage, includes a valve body with a water inlet channel. The valve body has a valve core for opening and closing the water inlet channel. The valve core is axially movable in the valve body. The first end of the valve core moves along the direction of closing the water inlet channel and is inserted into the water inlet channel. The first end of the valve core forms a first sealing structure, and a first sealing ring is provided on the first end of the valve core. The first sealing ring is used to abut against the outside of the output end of the water inlet channel and form a second sealing structure.

[0005] The valve core is provided with a second sealing ring in the inner cavity of the valve body.

[0006] The valve body is provided with a water outlet connector, and the water outlet connector is provided with a water outlet channel. By adjusting the rotation direction of the valve core, the on / off state between the water outlet channel and the water inlet channel can be switched.

[0007] The water outlet connector is detachably installed on the valve body, and a third sealing ring is provided between the water outlet connector and the valve body; or, the valve body and the water outlet connector are configured as an inseparable whole.

[0008] The valve core has a taper between its first end and the water inlet channel output end. When the valve core closes the water inlet channel, a beveled seal is formed between the valve core and the water inlet channel output end.

[0009] The valve body and valve core are provided with a threaded structure, and the valve core is axially movable within the valve body through the threaded structure. A sealing ring is provided at the front end of the threaded structure between the valve body and valve core to prevent liquid from seeping into the threaded structure between the valve body and valve core.

[0010] The valve body is provided with a limiting member. One end of the limiting member is inserted into the valve body. When the valve core moves in the direction of opening the water inlet channel, the valve core is limited to the inside of the limiting member to constrain the movement position of the valve core.

[0011] The valve core is provided with a contact surface that cooperates with the limiting member.

[0012] The second end of the valve core extends out of the valve body, and the second end of the valve core is provided with a connector for contact with the human hand.

[0013] The valve core is provided with an installation groove for fixing the sealing ring, and both the valve body and the valve core are made of metal.

[0014] The beneficial technical effects of this utility model are as follows: The valve body assembly further improves the ability to seal the water passage. It abandons the concept of simply blocking the inlet channel outlet with a sealing ring to achieve a shut-off. First, it uses the fit between metal valve body parts to achieve the first layer of sealing. Then, a second sealing ring is added on top of this, fitting perfectly against the inlet channel outlet to achieve a second layer of sealing. This allows it to maintain its sealing function even if some water seeps through from the first layer. This double-sealing structure greatly enhances the sealing function while keeping component costs relatively stable. It ensures that the metal material will not undergo severe plastic deformation like silicone under the high pressure of long-term use of the coffee function, while retaining the silicone sealing ring to form a second layer of sealing, significantly extending service life and eliminating the possibility of customer complaints due to component leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the water inlet channel being closed according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the water inlet channel opening according to an embodiment of the present invention.

[0017] Figure 3 This is an exploded view of the assembly structure of the valve body assembly according to an embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0019] See Figures 1-3 A valve body assembly that can effectively seal a water passage includes a valve body 1 with an inlet channel 101. The valve body 1 has a valve core 2 for opening and closing the inlet channel 101. The valve core 2 is axially movable inside the valve body 1. The first end of the valve core 2 moves along the direction of closing the inlet channel 101 and is inserted into the inlet channel 101. The first end of the valve core 2 forms a first sealing structure, and a first sealing ring 3 is provided on the first end of the valve core 2. The first sealing ring 3 is used to abut against the outside of the output end of the inlet channel 101 and form a second sealing structure.

[0020] This valve assembly is primarily used in the water circuit of coffee machines. It forms a double-sealing structure with the valve core 2 and the first sealing ring 3, solving the problem of permanent deformation and leakage inherent in traditional mechanically controlled water circuit assemblies that rely solely on silicone seals. Specifically, the first end of the valve core 2 moves along the direction of closing the water inlet channel 101 and inserts into it to form the first sealing structure. The metal valve core 2, in conjunction with the valve body 1, is resistant to plastic deformation under the long-term high-pressure environment of the coffee machine, ensuring the stability of the first seal. The first sealing ring 3 abuts against the outside of the output end of the water inlet channel 101 to form a second sealing structure, sealing any minor gaps that may exist in the first sealing structure. This double sealing significantly improves the reliability of the water circuit seal without a substantial change in cost.

[0021] The valve core 2 is provided with a second sealing ring 4 in the inner cavity of the valve body 1.

[0022] A second sealing ring 4 is provided in the inner cavity of the valve core 2 corresponding to the inner cavity of the valve body 1, which can further seal the gap between the valve core 2 and the inner cavity of the valve body 1. The second sealing ring 4 can fill the gap, forming an additional sealing guarantee and preventing liquid from leaking along the outer side of the second sealing ring 4.

[0023] The valve body 1 is provided with a water outlet connector 5, and the water outlet connector 5 is provided with a water outlet channel 501. By adjusting the rotation direction of the valve core 2, the on / off state between the water outlet channel 501 and the water inlet channel 101 can be switched.

[0024] By setting a water outlet connector 5 and a water outlet channel 501 on the valve body 1, and by adjusting the rotation direction of the valve core 2 to switch the opening and closing of the water outlet channel 501 and the water inlet channel 101, when the valve core 2 rotates in the direction close to the water inlet channel 101, the valve core 2 moves axially within the valve body 1. When the first end of the valve core 2 rotates to be fully inserted into the output end of the water inlet channel 101, the valve core 2 can no longer rotate. At this time, the water inlet channel 101 is closed, and the water inlet channel 101 and the water outlet channel 501 are not connected. Conversely, when the valve core 2 rotates in the direction away from the water inlet channel 101, the second end of the valve core 2 will gradually move out of the valve body 1, and the first end of the valve core 2 will disengage from the output end of the water inlet channel 101, and the water outlet channel 501 will be connected to the water inlet channel 101.

[0025] The water outlet connector 5 is detachably installed on the valve body 1, and a third sealing ring 10 is provided between the water outlet connector 5 and the valve body 1; or, the valve body 1 and the water outlet connector 5 are configured as an inseparable whole.

[0026] During disassembly installation, if the outlet connector 5 is damaged later, it is not necessary to replace the entire valve body 1; only the connector needs to be replaced, reducing maintenance costs. Furthermore, the third sealing ring 10 between the outlet connector 5 and the valve body 1 seals the connection gap, preventing leakage. The non-separable design reduces assembly gaps, making the valve body 1 and outlet connector 5 a stable whole, reducing the risk of leakage due to improper assembly. The outlet connector 5 can be fixed to the fixing hole of the valve body 1 by welding. Alternatively, the outlet connector 5 can be fixed to the internal thread hole of the valve body 1 by external thread.

[0027] A taper 6 is provided between the first end of the valve core 2 and the output end of the water inlet channel 101. When the valve core 2 closes the water inlet channel 101, a beveled seal is formed between the valve core 2 and the output end of the water inlet channel 101.

[0028] A taper 6 is provided between the first end of the valve core 2 and the output end of the water inlet channel 101, forming a beveled seal when the water inlet channel 101 is closed. The beveled seal has a larger contact area and a higher sealing fit, allowing for a tighter blockage of the water path. Furthermore, the taper 6 guides the valve core 2 to accurately insert into the water inlet channel 101, preventing valve core 2 misalignment that could lead to a poor seal. Simultaneously, the beveled seal can better withstand the high-pressure environment of the coffee machine, reducing the probability of water leakage from the sealing surface under high pressure, further enhancing the sealing effect of the first sealing structure and improving the reliability of the component under high-pressure conditions.

[0029] A threaded structure 7 is provided between the valve body 1 and the valve core 2, and the valve core 2 is axially movable within the valve body 1 through the threaded structure 7. The threaded structure 7 is located behind the second sealing ring 4 (a sealing ring is provided at the front end of the threaded structure 7 between the valve body 1 and the valve core 2) to prevent liquid from seeping into the threaded structure 7 between the valve body 1 and the valve core 2, to prevent the liquid from causing the threaded structure 7 to rust or corrode, and to avoid failure of the threaded structure 7.

[0030] The valve body 1 has an internal thread, and the valve core 2 has an external thread.

[0031] The threaded structure 7 between the valve body 1 and the valve core 2 makes the axial movement of the valve core 2 smoother, more precise, and self-locking. The self-locking characteristic of the thread prevents the valve core 2 from shifting under water pressure (such as being pushed open by high-pressure water when closed, or shifting due to vibration when opened), ensuring that the valve core 2 can stably maintain its corresponding position after it is in place. This design improves the stability and precision of the valve core 2's movement, ensures the reliable effectiveness of the sealing structure, and avoids water leakage or functional failure caused by valve core displacement.

[0032] The valve body 1 is provided with a limiting member 8. One end of the limiting member 8 is inserted into the valve body 1. When the valve core 2 moves along the direction of opening the water inlet channel 101, the valve core 2 is limited on the inner side of the limiting member 8 to constrain the movement position of the valve core 2.

[0033] The limiting element 8 on the valve body 1 can constrain the movement of the valve core 2, preventing the valve core 2 from moving excessively along the direction of opening the water inlet channel 101. Without a limiting structure, the user might cause the valve core to detach from the valve body 1 due to excessive rotation. However, with one end of the limiting element 8 inserted into the valve body 1, the valve core 2 is limited and stopped inside the limiting element 8 when it rotates, preventing excessive movement. This provides the user with clear feedback on the opening position, avoiding operational errors and improving safety and reliability.

[0034] The valve core 2 is provided with an abutment surface 201 that cooperates with the limiting member 8.

[0035] The second end of the valve core 2 extends out of the valve body 1, and the second end of the valve core 2 is provided with a connector 9 for contact with the human hand.

[0036] The second end of the valve core 2 extends outward from the valve body 1 and is equipped with a connector 9 that contacts the hand, improving user convenience. The connector 9 is designed for easy gripping, making manual rotation easier and more comfortable for the user.

[0037] The valve core 2 is provided with an installation groove 202 for fixing the sealing ring, and both the valve body 1 and the valve core 2 are made of metal.

[0038] The mounting groove 202 on the valve core 2 for fixing the sealing ring ensures that the sealing ring (such as the first sealing ring 3 and the second sealing ring 4) is always in the correct sealing position. The mounting groove 202 can fix and constrain the sealing ring, preventing it from shifting or falling off.

[0039] The valve body assembly, through manual operation of the connector 9, drives the valve core 2 to move axially within the valve body 1 via the threaded structure 7, thereby opening and closing the water circuit. The specific process is as follows: In the closed state (enabling extraction function): Manually rotate connector 9 clockwise. Connector 9 drives valve core 2 to rotate synchronously. Valve core 2 moves axially along the direction of closing water inlet channel 101 through threaded structure 7 until it cannot be turned. At this time, the first end of valve core 2 is inserted into water inlet channel 101. The first end of valve core 2 and the taper 6 of the output end of water inlet channel 101 form a beveled seal (first sealing structure). At the same time, the first sealing ring 3 on the first end of valve core 2 abuts against the outside of the output end of water inlet channel 101 (second sealing structure). The second sealing ring 4 corresponding to the inner cavity of valve body 1 seals the gap between valve core 2 and the inner cavity of valve body 1. Multiple seals work together to achieve water circuit closure (even if there is a gap, it can be blocked by the second sealing ring 4, and the water circuit is closed). Water cannot pass through valve body 1 and instead flows out from brew head, completing coffee extraction.

[0040] Open state (hot water / steam function): Manually rotate connector 9 counterclockwise. Connector 9 drives valve core 2 to rotate synchronously. Valve core 2 moves axially along the direction of opening water inlet channel 101 through threaded structure 7 until the abutment surface 201 of valve core 2 contacts the inner side of the limiting member 8 on valve body 1 (it is restricted by the limiting screw and cannot move further). At this time, the first end of valve core 2 separates from the output end of water inlet channel 101, the first sealing structure is released, and the water circuit is opened; water enters valve body 1 from water inlet channel 101 and then flows out through water outlet channel 501 of water outlet connector 5. Water can flow from valve body 1 through water outlet connector 5. At this time, hot water or steam can be released from here, realizing the hot water and steam output function.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A valve body assembly capable of effectively closing a waterway, comprising a valve body (1) provided with a water inlet channel (101), characterized in that: The valve body (1) is provided with a valve core (2) for opening and closing the water inlet channel (101). The valve core (2) is axially movable inside the valve body (1). The first end of the valve core (2) moves along the direction of closing the water inlet channel (101) and is inserted into the water inlet channel (101). The first end of the valve core (2) forms a first sealing structure, and a first sealing ring (3) is provided on the first end of the valve core (2). The first sealing ring (3) is used to abut against the outside of the output end of the water inlet channel (101) and form a second sealing structure.

2. The valve body assembly of claim 1, wherein: The valve core (2) is provided with a second sealing ring (4) in the inner cavity of the valve body (1).

3. The valve body assembly of claim 1, wherein: The valve body (1) is provided with a water outlet connector (5), and the water outlet connector (5) is provided with a water outlet channel (501). By adjusting the rotation direction of the valve core (2), the on / off state between the water outlet channel (501) and the water inlet channel (101) can be switched.

4. The valve body assembly of claim 3, wherein: The water outlet connector (5) is detachably installed on the valve body (1), and a third sealing ring (10) is provided between the water outlet connector (5) and the valve body (1); or, the valve body (1) and the water outlet connector (5) are set as an inseparable whole.

5. The valve body assembly of claim 1, wherein: The valve core (2) has a taper (6) between its first end and the output end of the water inlet channel (101). When the valve core (2) closes the water inlet channel (101), a ring of inclined seal is formed between the valve core (2) and the output end of the water inlet channel (101).

6. The valve body assembly of claim 1, wherein: A threaded structure (7) is provided between the valve body (1) and the valve core (2). The valve core (2) is axially movable inside the valve body (1) through the threaded structure (7). A sealing ring is provided at the front end of the threaded structure (7) between the valve body (1) and the valve core (2) to prevent liquid from seeping into the threaded structure (7) between the valve body (1) and the valve core (2).

7. The valve body assembly of claim 1, wherein: The valve body (1) is provided with a limiting member (8). One end of the limiting member (8) is inserted into the valve body (1). When the valve core (2) moves along the direction of opening the water inlet channel (101), the valve core (2) is limited to the inside of the limiting member (8) to constrain the movement position of the valve core (2).

8. The valve body assembly of claim 7, wherein: The valve core (2) is provided with an abutment surface (201) that cooperates with the limiting member (8).

9. The valve body assembly of claim 1, wherein: The second end of the valve core (2) extends out of the valve body (1), and the second end of the valve core (2) is provided with a connector (9) for contact with the human hand.

10. The valve body assembly of claim 1, wherein: The valve core (2) is provided with an installation groove (202) for fixing the sealing ring. Both the valve body (1) and the valve core (2) are made of metal.

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