Two-position three-way valve

Abstract

The two-position three-way valve comprises a center valve body, a water inlet, a lateral water outlet and a lower water outlet are formed in the two sides and the bottom of the center valve body respectively, a vertical pipe vertically penetrating through the lower water outlet is arranged in the middle of an inner cavity of the center valve body, and the side wall of the vertical pipe is communicated with the water inlet. A vertically-through lower valve body is fixedly connected to the lower portion of the center valve body, an upper valve body communicated with an inner cavity of the center valve body is fixedly connected to the top of the center valve body, a pressure control hole is formed in the top of the upper valve body, and a water control shaft plug is arranged in the inner cavity of the center valve body. The pressure control valve is novel in structure and convenient to use, the pressure control chamber is formed between the rubber sheet and the upper valve body, water is filled in and pumped out through the pressure control hole, and the vertical displacement of the water control shaft plug can be adjusted, so that outlets in the two sides of the vertical pipe are opened or sealed, and the flow direction of fluid is accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a two-position three-way valve. Background Art

[0002] A two-position, three-way valve is a fluid control valve with two operating positions and three fluid paths. This valve typically consists of a valve body, a valve core, and a control device. The valve body typically has three channels: an inlet channel, an outlet channel, and a switch socket connected to it. The valve core is usually a movable component that switches between two operating positions. The control device, which typically consists of a manual operating lever, an electric actuator, or a pneumatic actuator, controls the position of the valve core.

[0003] The working principle of a two-position, three-way valve is to change the flow direction and flow rate of a fluid through the movement of the valve core, thereby achieving system control. In the first working position, the channel is connected to the inlet channel and the switch jack, allowing fluid to flow from the inlet to the switch jack. In the second working position, the channel is connected to the switch jack and the outlet channel, allowing fluid to flow from the switch jack to the outlet.

[0004] Two-position, three-way valves are widely used, and are commonly found in hydraulic systems, pneumatic systems, heating systems, and air conditioning systems. By controlling the position of the valve core, the flow of fluid from one channel to another can be switched, or the amount of fluid flowing through the valve can be adjusted.

[0005] Traditional two-position three-way valves use a shaft with linear displacement to switch the displacement of a single sealing body to achieve water channel switching. They use an annular sealing ring with a circular cross-section for sealing. The annular sealing ring is easily damaged after long-term friction, resulting in a loose seal.

[0006] Based on this, the present invention designs a two-position three-way valve to solve the above problems. Utility Model Content

[0007] The purpose of the present utility model is to provide a two-position three-way valve to solve the problem proposed in the above background technology that the traditional two-position three-way valve adopts a shaft with linear displacement to perform switching displacement of a single sealing body to achieve water channel switching, and utilizes an annular sealing ring with a circular cross section for sealing, which is easily damaged after long-term friction, resulting in a poor seal.

[0008] To achieve the above object, the present utility model provides the following technical solution: A two-way three-way valve, comprising a central valve body, with a water inlet, a lateral water outlet and a lower water outlet provided on both sides and the bottom of the central valve body respectively. In the middle of the inner cavity of the central valve body, there is a vertical pipe penetrating through the lower water outlet, and the side wall of the vertical pipe is connected to the water inlet. Below the central valve body, there is a lower valve body that penetrates up and down, and above the central valve body, there is an upper valve body fixedly connected to its inner cavity. A pressure control hole is provided at the top of the upper valve body, and a water control shaft plug is arranged in the inner cavity of the central valve body.

[0009] Preferably, the water control shaft plug includes a rubber sheet fixedly connected to the connection part of the central valve body and the upper valve body. At the lower end outlet of the lower valve body, there is a support frame that does not affect water outflow. At the center of the support frame, there is a central shaft vertically and slidably connected and penetrating through the rubber sheet. At the lower end of the central shaft, there is a lower shaft plug that can seal the lower port of the vertical pipe, and at the upper end of the central shaft, there is an upper shaft plug that can seal the upper port of the vertical pipe. On the top of the rubber sheet, there is a pressing block, and the pressing block and the upper shaft plug clamp and fix the rubber sheet.

[0010] Preferably, the lower shaft plug includes a plug body with a T-shaped groove opened on the outside. A first sealing ring is sleeved and fixed in the T-shaped groove of the plug body, and the cross-section of the first sealing ring is T-shaped.

[0011] Preferably, the upper shaft plug includes a lower pressing block and a central clamping block, and a second sealing ring is fixedly arranged at the outer connection part of the lower pressing block and the central clamping block.

[0012] Preferably, the cross-section of the second sealing ring is in a shape like a reversed L, and the lower end surface of the part extending outwards can contact and seal the upper end surface of the vertical pipe.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The structure of the present utility model is novel and convenient to use. By forming a pressure control chamber between the rubber sheet and the upper valve body, through the filling and extraction of water through the pressure control hole, the up and down displacement of the water control shaft plug can be adjusted, thereby realizing the opening or sealing of the two side outlets of the vertical pipe and accurately controlling the fluid flow direction; through the first sealing ring with a T-shaped cross-section and the second sealing ring with a shape like a reversed L cross-section, precise sealing of the vertical pipe can be achieved, and it is also beneficial to the service life of the product itself.

[0014] Of course, when implementing any product of the present utility model, it is not necessarily required to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the water control shaft plug structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the enlarged structure of part A of the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1-Center valve body, 2-Water inlet, 3-Lower water outlet, 4-Lateral water outlet, 5-Vertical pipe, 6-Lower valve body, 7-Upper valve body, 8-Pressure control hole, 9-Rubber sheet, 10-Support frame, 11-Center shaft, 12-Lower shaft plug, 121-Plug body, 122-First sealing ring, 13-Upper shaft plug, 131-Lower pressure block, 132-Center clamping block, 133-Second sealing ring, 14-Pressure block. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The utility model provides a technical solution for a two-position three-way valve: a two-position three-way valve, a two-position three-way valve, comprising a central valve body 1, with a water inlet 4, a lateral water outlet 2 and a lower water outlet 3 respectively provided on both sides and the bottom of the central valve body 1, a vertical pipe 5 vertically penetrating the lower water outlet 3 is provided in the middle of the inner cavity of the central valve body 1, and the side wall of the vertical pipe 5 is connected with the water inlet 4, a lower valve body 6 passing through the upper and lower parts is fixedly connected to the bottom of the central valve body 1, an upper valve body 7 communicating with its inner cavity is fixedly connected to the top of the central valve body 1, a pressure control hole 8 is provided on the top of the upper valve body 7, and a water control shaft plug is provided in the inner cavity of the central valve body 1.

[0024] Further, the water control shaft plug includes a rubber sheet 9 fixedly connected to the connection between the central valve body 1 and the upper valve body 7. At the lower end outlet of the lower valve body 6, there is a support frame 10 that does not affect water outflow. At the center of the support frame 10, a central shaft 11 is vertically slidably connected and penetrates through the rubber sheet 9. At the lower end of the central shaft 11, there is a lower shaft plug 12 that can seal the lower port of the vertical pipe 5. At the upper end of the central shaft 11, there is an upper shaft plug 13 that can seal the upper port of the vertical pipe 5. At the top of the rubber sheet 9, there is a pressing block 14. The pressing block 14 and the upper shaft plug 13 clamp and fix the rubber sheet 9. The distance between the lower shaft plug 12 and the upper shaft plug 13 is greater than the overall height of the vertical pipe 5, so that when one side is blocking, the other side does not contact the vertical pipe 5, facilitating fluid flow.

[0025] Further, the lower shaft plug 12 includes a plug body 121 with a T-shaped groove opened on the outside. A first sealing ring 122 is sleeved and fixed in the T-shaped groove of the plug body 121. The cross-section of the first sealing ring 122 is T-shaped, and the part protruding from the T-shaped groove can be closely fitted with the inner cavity wall of the vertical pipe 5 to achieve sealing.

[0026] Further, the upper shaft plug 13 includes a lower pressing block 131 and a central clamping block 132. A second sealing ring 133 is fixedly connected to the outer connection between the lower pressing block 131 and the central clamping block 132.

[0027] Further, the cross-section of the second sealing ring 133 is in a shape like a reversed "卜" character, and the lower end surface of the part extending outward can contact and seal the upper end surface of the vertical pipe 5.

[0028] A specific application of this embodiment is as follows: The present utility model is a two-position three-way valve. A pressure control chamber is formed between the rubber sheet 9 and the upper valve body 7. By filling and extracting water through the pressure control hole 8, the lifting and lowering of the rubber sheet 9 can be achieved, thereby带动 the central shaft 11 to slide up and down along the support frame 10. When the lateral water outlet 2 needs to discharge water, control the central shaft 11 to带动 the lower shaft plug 12 to block the vertical pipe 5. When the lower water outlet 3 discharges water, control the central shaft 11 to带动 the upper shaft plug 13 to move downward to block the upper end surface of the vertical pipe 5.

[0029] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0030] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A two-position three-way valve, comprising a central valve body (1), characterized in that: On both sides and at the bottom of the central valve body (1), there are respectively a water inlet (4), a lateral water outlet (2) and a lower water outlet (3). In the middle of the inner cavity of the central valve body (1), there is a vertical pipe (5) that vertically penetrates the lower water outlet (3). The side wall of the vertical pipe (5) is connected to the water inlet (4). Below the central valve body (1), there is a lower valve body (6) that is vertically penetrated. At the top of the central valve body (1), there is an upper valve body (7) that is fixedly connected to its inner cavity. At the top of the upper valve body (7), there is a pressure control hole (8). In the inner cavity of the central valve body (1), there is a water control shaft plug.

2. A two-position three-way valve according to claim 1, characterized in that: The water control shaft plug includes a rubber sheet (9) fixedly connected to the connection between the central valve body (1) and the upper valve body (7). At the lower end outlet of the lower valve body (6), there is a support frame (10) that does not affect water outflow. At the center of the support frame (10), there is a central shaft (11) that is vertically slidably connected and penetrates the rubber sheet (9). At the lower end of the central shaft (11), there is a lower shaft plug (12) that can seal the lower port of the vertical pipe (5). At the upper end of the central shaft (11), there is an upper shaft plug (13) that can seal the upper port of the vertical pipe (5). At the top of the rubber sheet (9), there is a pressure block (14). The pressure block (14) and the upper shaft plug (13) clamp and fix the rubber sheet (9).

3. A two-position three-way valve according to claim 2, characterized in that: The lower shaft plug (12) includes a plug body (121) with a T-shaped groove on the outside. Inside the T-shaped groove of the plug body (121), there is a first sealing ring (122) sleeved and fixed. The cross-section of the first sealing ring (122) is T-shaped.

4. A two-position three-way valve according to claim 2, characterized in that: The upper shaft plug (13) includes a lower pressure block (131) and a central clamping block (132). At the outer connection of the lower pressure block (131) and the central clamping block (132), there is a second sealing ring (133) fixedly arranged.

5. A two-position three-way valve according to claim 4, characterized in that: The cross-section of the second sealing ring (133) is in a shape like a Chinese character '卜', and the lower end surface of the part that extends outwards can contact and seal the upper end surface of the vertical pipe (5).

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