A double alternating on-off valve

Abstract

The utility model discloses a kind of doublet alternate switch valve, including valve seat and the valve core being rotatably connected on valve seat, first water inlet, first water outlet, second water inlet and second water outlet are equipped on the valve seat, first communication passage and second communication passage are equipped on the valve core;Wherein, with the rotation of the valve core, the doublet alternate switch can be selectively switched between first state and second state: first state: the first communication passage is aligned and communicates first water inlet and first water outlet, and the second communication passage is staggered at least one of second water inlet and second water outlet;Second state: the first communication passage is staggered at least one of first water inlet and first water outlet, and the second communication passage is aligned and communicates second water inlet and second water outlet.The utility model has the advantages of compact structure, control accurate, low cost.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, and in particular to a double-interval alternating switching valve. Background Technology

[0002] Currently, common two-inlet, two-outlet valves typically employ a synchronous opening and closing structure, meaning that both inlets and two outlets open or close simultaneously. However, in certain specific applications, it is necessary to achieve alternating opening and closing of the two sets of fluid channels, such as in situations where it is necessary to periodically switch the fluid source or discharge path.

[0003] To achieve the aforementioned alternating on / off function, existing technologies typically employ two approaches:

[0004] Multi-valve linkage scheme: This scheme uses two or more independent valves, which are coordinated and controlled by a mechanical linkage or control system to achieve alternating opening and closing. This scheme has disadvantages such as complex structure, large size, difficulty in guaranteeing control accuracy, and high cost, and is also relatively inconvenient to install and maintain.

[0005] Complex valve body structure solution: This solution achieves alternating opening and closing by designing a complex internal valve body structure and motion mechanism. This solution has a complex internal structure, is difficult to process, has high manufacturing costs, and is prone to malfunctions.

[0006] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a double-stage alternating switching valve that is compact in structure, precise in control, and low in cost.

[0008] This utility model is achieved through the following technical solution:

[0009] To solve the above-mentioned technical problems, this utility model provides a double-interval switching valve, including a valve seat and a valve core rotatably connected to the valve seat. The valve seat is provided with a first inlet, a first outlet, a second inlet, and a second outlet, and the valve core is provided with a first connecting channel and a second connecting channel.

[0010] As the valve core rotates, the double-alternating switch can selectively switch between a first state and a second state:

[0011] First state: The first connecting channel is aligned and connects the first inlet and the first outlet, and the second connecting channel is offset from at least one of the second inlet and the second outlet;

[0012] Second state: The first connecting channel is offset from at least one of the first inlet and the first outlet, and the second connecting channel is aligned and connects the second inlet and the second outlet.

[0013] To further solve the technical problem to be solved by this utility model, this utility model provides a double alternating switching valve in which a fixed plate is fixedly connected to the valve seat, the valve core includes a rotating plate, the fixed plate and the rotating plate are tightly fitted together, the first water inlet, the first water outlet, the second water inlet and the second water outlet are all opened on the surface of the fixed plate, and the first connecting channel and the second connecting channel are all opened at corresponding positions on the surface of the rotating plate facing the fixed plate.

[0014] In order to further solve the technical problems to be solved by this utility model, the fixed disk and the rotating disk in the double alternating switching valve provided by this utility model are both ceramic parts.

[0015] To further address the technical problems to be solved by this utility model, this utility model provides a double alternating switching valve in which a limiting structure is provided between the valve core and the valve seat to limit the range of rotation angle of the valve core.

[0016] To further solve the technical problem to be solved by this utility model, this utility model provides a double alternating switching valve in which the limiting structure includes a limiting member provided on the valve core and a housing covered on the valve core and fixed on the valve seat. The inner side wall of the housing is provided with an arc-shaped limiting groove, and the outer side wall of the limiting member is provided with a limiting protrusion, and the limiting protrusion is engaged in the corresponding arc-shaped limiting groove.

[0017] To further address the technical problems to be solved by this utility model, the valve core of the double alternating switching valve provided by this utility model further includes an adjusting rod.

[0018] To further solve the technical problem to be solved by this utility model, in the double alternating switching valve provided by this utility model, the first inlet, the first outlet, the second inlet and the second outlet are arranged in a circle along the rotation center of the valve core, and the first connecting channel and the second connecting channel are both arc-shaped grooves and are also arranged in a circle along the rotation center of the valve core.

[0019] To further address the technical problems to be solved by this utility model, in a double-connected alternating switching valve provided by this utility model, both the inner bottom edge of the first connecting channel and the inner bottom edge of the second connecting channel are provided with arc-shaped guide surfaces.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This invention relates to a dual-stage alternating switching valve that utilizes two arc-shaped connecting channels on a single rotary valve core to achieve the alternating opening and closing of two sets of fluid channels, replacing the complex linkage valve assembly in traditional solutions. This design significantly simplifies the valve body structure, reduces manufacturing costs, and improves control accuracy and reliability. Furthermore, the use of ceramic materials and a limiting structure further enhances durability and ease of operation, giving it a significant advantage in scenarios requiring alternating fluid switching. Attached Figure Description

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is one of the exploded schematic diagrams of this utility model;

[0025] Figure 3 This is an exploded view of the fixed disk and the rotating disk;

[0026] Figure 4 This is a schematic diagram of the first state;

[0027] Figure 5 This is a schematic diagram of the second state;

[0028] Figure 6 This is the second exploded view of this utility model. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-6 As shown, this utility model provides a double-acting alternating switching valve, which mainly includes a valve seat 1 and a valve core 2 rotatably connected to the valve seat 1. The valve seat 1 has four ports, namely a first inlet 1a, a first outlet 1b, a second inlet 1c, and a second outlet 1d. The valve core 2 has two connecting channels, namely a first connecting channel 2a and a second connecting channel 2b.

[0031] The core of this invention lies in the selective switching between the first and second states achieved by rotating the valve core 2, thereby realizing the function of double-alternating switching.

[0032] First state (e.g.) Figure 4As shown): When the valve core 2 rotates to the first state, the first connecting channel 2a aligns with and connects with the first inlet 1a and the first outlet 1b, thereby forming a fluid channel between the first inlet 1a and the first outlet 1b, achieving fluid communication. Simultaneously, the second connecting channel 2b is offset from at least one of the second inlet 1c and the second outlet 1d, preventing communication between the second inlet 1c and the second outlet 1d, thus preventing fluid from passing through.

[0033] Second state (such as) Figure 5 As shown): When the valve core 2 rotates to the second state, the first connecting channel 2a is offset from at least one of the first inlet 1a and the first outlet 1b, so that the first inlet 1a and the first outlet 1b are not connected, and fluid cannot pass through. At the same time, the second connecting channel 2b is aligned with and connected to the second inlet 1c and the second outlet 1d, thereby forming a fluid channel between the second inlet 1c and the second outlet 1d, realizing fluid communication.

[0034] Through the above design, the dual-interval switching valve of this utility model can realize the alternating opening and closing of two sets of fluid channels by rotating only one valve core 2, which is equivalent to two linked valves. However, compared with the linked valve, the structure is simpler and more compact, and the cost is lower.

[0035] To improve sealing performance and durability, such as Figure 2 , Figure 3 As shown, in this embodiment, a fixed disk 11 is fixedly connected to the valve seat 1, and the valve core 2 includes a rotating disk 21. The fixed disk 11 and the rotating disk 21 are tightly fitted together. The first inlet 1a, the first outlet 1b, the second inlet 1c, and the second outlet 1d are all opened on the surface of the fixed disk 11, and the first connecting channel 2a and the second connecting channel 2b are both opened at corresponding positions on the surface of the rotating disk 21 facing the fixed disk 11.

[0036] Preferably, both the fixed disk 11 and the rotating disk 21 are ceramic parts. Ceramic materials have good wear resistance and corrosion resistance, which can effectively extend the service life of the valve. More preferably, a sealing ring (not shown in the figure) is also provided between the fixed disk 11 and the rotating disk 21, and a sealing ring receiving groove is formed on the opposing surfaces of the two to further enhance the sealing performance and prevent fluid leakage.

[0037] like Figure 6 As shown, to ensure that valve core 2 switches in the correct position and to avoid excessive or insufficient rotation angle, as follows: Figure 6As shown, in this embodiment, a limiting structure for restricting the rotation angle range of the valve core 2 is also provided between the valve core 2 and the valve seat 1. Specifically, the limiting structure includes a limiting member 22 provided on the valve core 2 and a housing 12 covering the valve core 2 and fixed to the valve seat 1. An arc-shaped limiting groove 121 is provided on the inner side wall of the housing 12, and a limiting protrusion 221 is provided on the outer side wall of the limiting member 22, and the limiting protrusion 221 is engaged in the corresponding arc-shaped limiting groove 121. By controlling the movement range of the limiting protrusion 221 within the arc-shaped limiting groove 121, the rotation angle of the valve core 2 can be precisely controlled, ensuring accurate switching between the first state and the second state.

[0038] To facilitate user operation, such as Figure 1 As shown, the valve core 2 also includes an adjusting rod 23, which allows the user to rotate the valve core 2 to switch the fluid passage. The upper end of the adjusting rod 23 is usually also equipped with anti-slip textures or a knob cap.

[0039] To make the switching of fluid channels smoother, such as Figures 4-5 As shown, the first inlet 1a, the first outlet 1b, the second inlet 1c, and the second outlet 1d are arranged in a circle along the rotation center of the valve core 2. The first connecting channel 2a and the second connecting channel 2b are both arc-shaped grooves and are also arranged in a circle along the rotation center of the valve core 2.

[0040] Preferably, the inner bottom edge of the first connecting channel 2a and the inner bottom edge of the second connecting channel 2b are provided with arc-shaped guide surfaces 2a1 and 2b1, which can reduce the resistance during fluid flow and improve fluid throughput.

[0041] The above is a detailed description of the specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-stage alternating on / off valve, characterized in that: It includes a valve seat (1) and a valve core (2) rotatably connected to the valve seat (1). The valve seat (1) is provided with a first inlet (1a), a first outlet (1b), a second inlet (1c) and a second outlet (1d). The valve core (2) is provided with a first connecting channel (2a) and a second connecting channel (2b). As the valve core (2) rotates, the double-pole alternating switch can selectively switch between a first state and a second state: First state: The first connecting channel (2a) is aligned with and connects the first inlet (1a) and the first outlet (1b), and the second connecting channel (2b) is offset from at least one of the second inlet (1c) and the second outlet (1d); Second state: The first connecting channel (2a) is offset from at least one of the first inlet (1a) and the first outlet (1b), and the second connecting channel (2b) is aligned with and connects the second inlet (1c) and the second outlet (1d). The valve seat (1) includes a fixed plate (11), and the valve core (2) includes a rotating plate (21). The fixed plate (11) and the rotating plate (21) are tightly fitted together. The first inlet (1a), the first outlet (1b), the second inlet (1c), and the second outlet (1d) are all opened on the surface of the fixed plate (11). The first connecting channel (2a) and the second connecting channel (2b) are both opened at corresponding positions on the surface of the rotating plate (21) facing the fixed plate (11). The first inlet (1a), the first outlet (1b), the second inlet (1c), and the second outlet (1d) are arranged in a circle around the rotation center of the valve core (2). The first connecting channel (2a) and the second connecting channel (2b) are both arc-shaped grooves and are also arranged in a circle around the rotation center of the valve core (2).

2. The double alternating switching valve according to claim 1, characterized in that: Both the fixed disk (11) and the rotating disk (21) are ceramic parts.

3. The double alternating switching valve according to claim 1, characterized in that: A limiting structure is provided between the valve core (2) and the valve seat (1) to limit the range of rotation angle of the valve core (2).

4. A double alternating switching valve according to claim 3, characterized in that: The limiting structure includes a limiting member (22) provided on the valve core (2) and a housing (12) covering the valve core (2) and fixed on the valve seat (1). The inner side wall of the housing (12) is provided with an arc-shaped limiting groove (121), and the outer side wall of the limiting member (22) is provided with a limiting protrusion (221), and the limiting protrusion (221) is fitted in the corresponding arc-shaped limiting groove (121).

5. A double alternating switching valve according to claim 3, characterized in that: The limiting structure includes a limiting member (22) provided on the valve core (2) and a housing (12) covering the valve core (2) and fixed on the valve seat (1). The inner side wall of the housing (12) is provided with an arc-shaped limiting groove (121), and the outer side wall of the limiting member (22) is provided with a limiting protrusion (221), and the limiting protrusion (221) is fitted in the corresponding arc-shaped limiting groove (121).

6. A double alternating switching valve according to claim 1, characterized in that: The inner bottom edge of the first connecting channel (2a) and the inner bottom edge of the second connecting channel (2b) are provided with arc-shaped guide surfaces (2a1, 2b1).

Images