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 communicates 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, the vertical displacement of the water control shaft plug can be adjusted, and therefore 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 invention 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 that has two working positions and three fluid channels. This valve usually consists of a valve body, a valve core and a control device. The valve body usually has three channels: an inlet channel, an outlet channel and a switch jack connected to it. The valve core is usually a movable part that can switch between two working positions. The control device is generally composed of a manual operating lever, an electric drive or a pneumatic drive, which can be used to control the position of the valve core.

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

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

[0005] The traditional two-position three-way valve uses a shaft with linear displacement to switch the single sealing body to achieve water channel switching. It uses 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 poor seal.

[0006] Based on this, the present invention designs a two-position three-way valve to solve the above problem. Summary of the invention

[0007] The object of the present invention is to provide a two-position three-way valve to solve the problem that the traditional two-position three-way valve proposed in the above background technology uses a shaft with linear displacement to perform switching displacement of a single sealing body to achieve water channel switching, and uses 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 poor seal.

[0008] To achieve the above object, the present invention provides the following technical solution: A two-way three-way valve includes a central valve body. An inlet, a lateral outlet, and a lower outlet are respectively provided on both sides and the bottom of the central valve body. A vertical pipe penetrating the lower outlet is provided in the middle of the inner cavity of the central valve body. The side wall of the vertical pipe is communicated with the inlet. A lower valve body penetrating up and down is fixedly connected below the central valve body. An upper valve body communicated with its inner cavity is fixedly connected to the top of the central valve body. A pressure control hole is opened at the top of the upper valve body. 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. A support frame that does not affect water outlet is arranged at the lower end outlet of the lower valve body. A central shaft penetrating the rubber sheet is vertically slidably connected at the center of the support frame. A lower shaft plug capable of sealing the lower port of the vertical pipe is arranged at the lower end of the central shaft. An upper shaft plug capable of sealing the upper port of the vertical pipe is arranged at the upper end of the central shaft. A pressing block is arranged at the top of the rubber sheet. 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. 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. A second sealing ring is fixedly connected 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 the Chinese character "bu", and the lower end surface of the part extending outwards can be in contact and sealed with the upper end surface of the vertical pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is novel and easy to use. A pressure control chamber is formed between the rubber sheet and the upper valve body. By filling and extracting water through the pressure control hole, the up and down displacement of the water control shaft plug can be adjusted, so as to open or seal the two side outlets of the vertical pipe, and accurately control the fluid flow direction. Through the first sealing ring with a T-shaped cross section and the second sealing ring with a shape like the Chinese character "bu" cross section, precise sealing of the vertical pipe can be achieved, which is also beneficial to the service life of the product itself.

[0014] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

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

[0019] Figure 4 It is a schematic diagram of the enlarged structure of part A of the present invention.

[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 axis, 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 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The present invention 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, a water inlet 4, a lateral water outlet 2 and a lower water outlet 3 are respectively arranged on both sides and the bottom of the central valve body 1, a vertical pipe 5 vertically penetrating the lower water outlet 3 is arranged 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 penetrating from top to bottom 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 opened on the top of the upper valve body 7, and a water control shaft plug is arranged 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. A support frame 10 that does not affect water outflow is provided at the lower end outlet of the lower valve body 6. A central shaft 11 passing through the rubber sheet 9 is vertically slidably connected at the center of the support frame 10. A lower shaft plug 12 that can seal the lower port of the vertical pipe 5 is provided at the lower end of the central shaft 11. An upper shaft plug 13 that can seal the upper port of the vertical pipe 5 is provided at the upper end of the central shaft 11. A pressing block 14 is provided at the top of the rubber sheet 9. 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 party seals, the other party 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 at the outer connection of 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 "卜", and the lower end surface of the part extending outward thereof 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 invention 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 of the rubber sheet 9 can be realized, thereby driving 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 drive the lower shaft plug 12 to seal the vertical pipe 5. When the lower water outlet 3 discharges water, control the central shaft 11 to drive the upper shaft plug 13 to move down to seal 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 the embodiment or example are included in at least one embodiment or example of the present invention. 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 only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. 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), a water inlet (4), a lateral water outlet (2), and a lower water outlet (3) are respectively arranged. In the middle of the inner cavity of the central valve body (1), a vertical pipe (5) vertically penetrating the lower water outlet (3) is arranged. The side wall of the vertical pipe (5) is communicated with the water inlet (4). A lower valve body (6) that is vertically penetrated is fixedly connected below the central valve body (1). An upper valve body (7) communicated with its inner cavity is fixedly connected to the top of the central valve body (1). A pressure control hole (8) is opened at the top of the upper valve body (7). A water control shaft plug is arranged in the inner cavity of the central valve body (1).

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 part of the central valve body (1) and the upper valve body (7). At the lower end outlet of the lower valve body (6), a support frame (10) that does not affect water outlet is arranged. A central shaft (11) penetrating the rubber sheet (9) is vertically slidably connected at the center of the support frame (10). A lower shaft plug (12) capable of sealing the lower port of the vertical pipe (5) is arranged at the lower end of the central shaft (11). An upper shaft plug (13) capable of sealing the upper port of the vertical pipe (5) is arranged at the upper end of the central shaft (11). A pressing block (14) is arranged at the top of the rubber sheet (9). The pressing 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 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.

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

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 reversed "卜" character, and the lower end surface of the part extending outwards thereof can contact and seal the upper end surface of the vertical pipe (5).

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