Three-way valve

Abstract

The utility model relates to a three-way valve, which belongs to the technical field of three-way valves and comprises an actuator, a valve body and connecting pipes, the actuator is mounted on the upper portion of the valve body and used for driving the valve body to work, a plurality of connecting pipes are arranged on the valve body, the valve body is connected with an external pipeline through the connecting pipes, and a valve core is arranged in the valve body and connected with the actuator through a connecting shaft. The connecting shaft comprises a first shaft and a second shaft, one end of the first shaft is connected with the actuator, the other end of the first shaft is inserted into the second shaft, and the second shaft is connected with the valve element. Torque is transmitted perfectly, and high-precision flow control is achieved; a sealing assembly is designed, so that frictional contact among parts is reduced, the service life of a product is prolonged, and permeation and leakage in the valve are avoided; and by using a corrosion-resistant material, the device can be used for a long time in a high-humidity environment without generating a serious ion precipitation problem.

Description

Technical Field

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

[0002] At present, there are many difficulties in the design and processing of hydrogen energy three-way valves.

[0003] First, the hydrogen energy three-way valve has a large flow rate, and its pressure drop in the fully open and fully closed states must be less than the specified threshold, and internal leakage must also be well controlled; secondly, the three-way valve opening and closing action response time should be short, the valve should be able to control the flow between the two inlets and outlets by adjusting the opening, and within the opening range of 0-100%, the valve control accuracy meets the design requirements; finally, as a hydrogen energy three-way valve, higher requirements are placed on ion precipitation, conductivity and current stability during its operation to ensure that the valve body is efficient, clean and safe when working. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model

[0005] The purpose of the utility model is to solve the problems raised in the above background.

[0006] 2. Technical solution

[0007] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0008] The utility model discloses a three-way valve, comprising an actuator, a valve body and a connecting pipe. The actuator is installed on the upper part of the valve body. The actuator is used to drive the valve body to work. A plurality of connecting pipes are arranged on the valve body. The valve body is connected to an external pipeline through the connecting pipes. A valve core is arranged in the valve body. The valve core is connected to the actuator through a connecting shaft. The connecting shaft comprises a shaft one and a shaft two. One end of the shaft one is connected to the actuator, and the other end is inserted into the shaft two. The shaft two is connected to the valve core.

[0009] Preferably, a vertical card strip and a cutout are provided on axis one, a plurality of vertical card strips are arranged circumferentially on axis one, the cutouts are symmetrically arranged on axis one, a vertical card groove corresponding to the vertical card strip and a cut groove corresponding to the cutout are provided on axis two, the vertical card strip is inserted into the vertical card groove, and the cutout fits with the cut groove.

[0010] Preferably, a waist-round hole is provided on the valve core, and the end of the second shaft connected to the valve core is a waist-round end, and the waist-round end of the second shaft is inserted into the waist-round hole for installation.

[0011] Preferably, a shaft seal is provided on the valve body, and the shaft seal is sleeved on the connecting shaft, and the upper end of the shaft seal contacts the actuator, and the lower end contacts the valve body.

[0012] Preferably, a sealing assembly is provided on the connecting pipe, the sealing assembly includes an outer seal and an inner seal, the outer seal is made of EPDM material, the inner seal is made of PTFE material, and the sealing assembly is stuck between the connecting pipe and the valve core.

[0013] Preferably, the outer seal contacts the connecting pipe, and the inner seal contacts the valve core.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0016] In view of the small flow rate of traditional three-way valves, the utility model adopts large-diameter pipelines to meet the requirements of large flow rate of hydrogen energy; in view of the working conditions where flow control needs to overcome large torque under large flow rate, double connection cooperation of threads and grooves is adopted between the connecting shaft and the actuator to ensure perfect torque transmission and realize high-precision flow control; in view of the traditional three-way valve, the spherical valve core controls the valve opening, thereby ensuring the opening range of the valve; in view of the serious infiltration in the traditional structure and the difficulty in processing and assembly, the sealing assembly is designed to reduce the friction contact between the components, improve the service life of the product, and avoid infiltration and leakage in the valve; by using corrosion-resistant materials, it can be used for a long time in a high humidity environment without causing serious ion precipitation problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a three-way valve of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a three-way valve of the utility model;

[0019] Figure 3 This is a structural schematic diagram of a connecting shaft of a three-way valve of the utility model;

[0020] Figure 4 The structure diagram of the sealing assembly of a three-way valve of the utility model is shown in FIG. Figure 1 .

[0021] Explanation of the symbols in the schematic diagram:

[0022] 100. Actuator;

[0023] 200, valve body; 210, valve core; 220, connecting shaft; 221, shaft one; 222, shaft two; 223, vertical clamping strip; 224, cutout; 225, vertical clamping groove; 226, cut groove; 230, shaft seal;

[0024] 300, connecting pipe; 310, sealing assembly; 311, external seal; 312, internal seal. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0028] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0029] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] Example 1

[0032] See attached Figure 1-4 A three-way valve of this embodiment includes an actuator 100, a valve body 200 and a connecting pipe 300. The actuator 100 is installed on the upper part of the valve body 200. The actuator 100 is used to drive the valve body 200 to work. A plurality of connecting pipes 300 are provided on the valve body 200. The valve body 200 is connected to an external pipeline through the connecting pipes 300. A valve core 210 is provided in the valve body 200. The valve core 210 is connected to the actuator 100 through a connecting shaft 220. The connecting shaft 220 includes a shaft 1 221 and a shaft 222. One end of the shaft 1 221 is connected to the actuator 100, and the other end is inserted into the shaft 222. The shaft 222 is connected to the valve core 210.

[0033] In this embodiment, vertical clips 223 and cutouts 224 are provided on axis 1 221. A plurality of vertical clips 223 are arranged circumferentially on axis 1 221. The cutouts 224 are symmetrically arranged on axis 1 221. Vertical slots 225 corresponding to the vertical clips 223 and cutouts 226 corresponding to the cutouts 224 are provided on axis 2 222. The vertical clips 223 are inserted into the vertical slots 225. The cutouts 224 fit the cutouts 226.

[0034] In this embodiment, a waist-shaped hole is provided on the valve core 210, and one end of the second shaft 222 connected to the valve core 210 is a waist-shaped end, and the waist-shaped end of the second shaft 222 is inserted into the waist-shaped hole for installation.

[0035] In this embodiment, a shaft seal 230 is disposed on the valve body 200 . The shaft seal 230 is sleeved on the connecting shaft 220 . The upper end of the shaft seal 230 contacts the actuator 100 , and the lower end contacts the valve body 200 .

[0036] The connecting pipe 300 of this embodiment is provided with a sealing assembly 310 , which includes an outer seal 311 and an inner seal 312 . The outer seal 311 is made of EPDM material, and the inner seal 312 is made of PTFE material. The sealing assembly 310 is stuck between the connecting pipe 300 and the valve core 210 .

[0037] In this embodiment, the outer seal 311 contacts the connecting pipe 300 , and the inner seal 312 contacts the valve core 210 .

[0038] Working principle:

[0039] 1. The vertical clamping strip 223 and the cutout 224 are double connected with the vertical clamping slot 225 and the cutout 226 to ensure smooth and efficient power transmission.

[0040] 2. The valve core 210 adopts a ball valve structure. The spherical valve core 210 structure is designed to cooperate with the actuator 100 and the power transmission of the connecting shaft 220, as the actuator of the product, to control the opening of the three-way valve, and to control the flow between the two inlets and outlets within the range of 0-100%.

[0041] 3. The valve body 200 and the connecting pipe 300 are designed to be split, and the dimensions of the connecting pipe 300 are completely consistent, which is convenient for processing and assembly.

[0042] 4. Sealing assembly 310 ensures the sealing of each connection part. The sealing assembly 310 structure is used between the connecting pipe 300 and the valve body 200, in which EPDM is convenient for sealing and installation, and PTFE material is friction-resistant and has good lubricity, and is used for direct contact with the valve core 210, thus ensuring the overall sealing of the product and increasing the service life of the product.

[0043] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A three-way valve, characterized in that: The invention comprises an actuator (100), a valve body (200) and a connecting pipe (300), wherein the actuator (100) is installed on the upper part of the valve body (200), and the actuator (100) is used to drive the valve body (200) to work, and the valve body (200) is provided with a plurality of connecting pipes (300), and the valve body (200) is connected to an external pipeline through the connecting pipes (300), and a valve core (210) is provided in the valve body (200), and the valve core (210) is connected to the actuator (100) through a connecting shaft (220), and the connecting shaft (220) comprises a first shaft (221) and a second shaft (222), and one end of the first shaft (221) is connected to the actuator (100), and the other end is inserted into the second shaft (222), and the second shaft (222) is connected to the valve core (210).

2. A three-way valve according to claim 1, characterized in that: The first axis (221) is provided with a vertical clamping strip (223) and a notch (224), a plurality of vertical clamping strips (223) are arranged circumferentially on the first axis (221), the notch (224) is symmetrically arranged on the first axis (221), the second axis (222) is provided with a vertical clamping groove (225) corresponding to the vertical clamping strip (223) and a notch (226) corresponding to the notch (224), the vertical clamping strip (223) is clamped into the vertical clamping groove (225), and the notch (224) is fitted with the notch (226).

3. A three-way valve according to claim 1, characterized in that: The valve core (210) is provided with a waist-shaped hole, and one end of the second shaft (222) connected to the valve core (210) is a waist-shaped end, and the waist-shaped end of the second shaft (222) is inserted into the waist-shaped hole for installation.

4. A three-way valve according to claim 1, characterized in that: The valve body (200) is provided with a shaft seal (230), which is sleeved on the connecting shaft (220), and the upper end of the shaft seal (230) contacts the actuator (100), while the lower end contacts the valve body (200).

5. A three-way valve according to claim 1, characterized in that: The connecting pipe (300) is provided with a sealing assembly (310), the sealing assembly (310) comprising an outer seal (311) and an inner seal (312), the outer seal (311) being made of EPDM material, the inner seal (312) being made of PTFE material, and the sealing assembly (310) being clamped between the connecting pipe (300) and the valve core (210).

6. A three-way valve according to claim 5, characterized in that: The outer seal (311) contacts the connecting pipe (300), and the inner seal (312) contacts the valve core (210).

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