Two-position three-way mechanical valve

Abstract

The utility model discloses a two-position three-way mechanical valve which comprises a valve body, a working cavity arranged on the valve body and a valve cover installed on the valve body. The valve cover is connected and communicated with the working cavity through an exhaust port formed in the valve cover; an air inlet and a working port are formed in the valve body; a valve clack assembly is arranged in the working cavity; the valve clack assembly comprises an upper valve plate, a lower valve plate and a valve rod sliding between the upper valve plate and the lower valve plate; one ends of the air inlet and the working port are communicated with the working cavity; through downward movement of the valve rod, the air channel in the valve rod is communicated with the air inlet, so that air flow flows to the working opening after passing through the air channel; the valve rod moves upwards so that the air channel can be separated from the air inlet, the air channel can be promoted to be communicated with the exhaust port while the air flow of the air inlet is cut off from flowing to the working port, and therefore the air flow from the working port can be exhausted. On the basis, the equipment utilizes a pure mechanical structure to complete the conversion of gas paths, and also has the advantages of simple structure and few parts.

Description

Technical Field

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

[0002] Solenoid valves cannot be used in certain situations, such as those with dangerous gases, because they need to be powered. In addition, solenoid valves have a complex structure and high manufacturing costs. If the solenoid valve is to be used as a limit switch, it is necessary to install additional sensors such as photoelectric switches to convert position signals into electrical signals to control the switching of the solenoid valve gas path, so that the solenoid valve can achieve the effect of a limit switch in mechanical design. Utility Model Content

[0003] The purpose of the utility model is to provide a two-position three-way mechanical valve to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-position three-way mechanical valve, comprising a valve body, a working chamber arranged on the valve body and an exhaust port connected to the working chamber; an air inlet is arranged on one side of the valve body, and a working port is arranged on one side of the air inlet, and one end of the air inlet and the working port are both connected to the working chamber; a valve flap assembly is also arranged in the working chamber, and the valve flap assembly comprises an upper valve plate and a lower valve plate and a valve stem sliding between the upper valve plate and the lower valve plate; the valve stem is moved downward to make the air channel arranged on the valve stem connected to the air inlet, so that the air flow flows to the working port after passing through the air channel; the valve stem is moved upward to separate the air channel from the air inlet, and the air channel can be connected to the exhaust port while cutting off the air flow from the air inlet to the working port.

[0005] As a preferred technical solution of the utility model: the valve flap assembly also includes a support member; an air hole is provided on the circumferential surface of the support member, and a sliding groove for guiding the valve stem to slide is provided in the middle of the support member.

[0006] As a preferred technical solution of the utility model: the number of the air channels is multiple, and the multiple air channel circular arrays are on the circumferential surface of the valve stem.

[0007] As a preferred technical solution of the utility model: the upper valve plate is installed above the support member, and the lower valve plate is installed below the support member.

[0008] As a preferred technical solution of the utility model: a reset member is further provided in the working chamber, and the reset member causes the valve stem to reset after the external force disappears.

[0009] As a preferred technical solution of the utility model: a valve cover is also provided on the valve body; the exhaust port is arranged on the valve cover and is connected to the valve body through the valve cover, so that the reset member and the valve flap assembly are assembled to the valve body, and one end of the valve stem away from the reset member is exposed outside the valve cover.

[0010] As a preferred technical solution of the utility model: a process hole is further provided on the side of the valve body, and the central axis of the process hole is perpendicular to the central axis of the air inlet.

[0011] As a preferred technical solution of the utility model: a plug is further provided at one end of the process hole away from the working chamber.

[0012] By adopting the above technical solution, the utility model has the following beneficial effects: the airway provided on the valve stem is connected with the air inlet so that the airflow flows to the working port after passing through the airway; the valve stem is moved upward to separate the airway from the air inlet, and the airway is connected with the exhaust port while the airflow from the air inlet is cut off to the working port, so that the airflow from the working port can be discharged. Based on this, the device uses a purely mechanical structure to complete the change of the air path and has the advantages of simple structure and a small number of parts.

[0013] Based on this, the mechanical valve has a simple structure, low manufacturing cost, and a certain mechanical stroke exists outside the mechanical valve to directly control the switching of the gas path. Therefore, the mechanical valve can be directly used as a limit switch in mechanical design. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the main structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the exploded structure of the valve disc assembly of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the utility model when viewed from above;

[0018] Figure 5 It is a schematic structural diagram of the back of the valve body of the utility model after being cut open.

[0019] In the figure: 1. valve body; 2. air inlet; 3. working chamber; 4. working port; 5. reset member; 6. valve disc assembly; 60. valve stem; 61. air duct; 62. upper valve plate; 63. support member; 64. lower valve plate; 65. slide groove; 66. air hole; 7. exhaust port; 8. valve cover; 9. process hole; 10. plug. DETAILED DESCRIPTION

[0020] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0021] See also Figure 1-5 The utility model provides an embodiment: a two-position three-way mechanical valve, comprising a valve body 1, a working chamber 3 arranged on the valve body 1, and an exhaust port 7 connected to the working chamber 3; an air inlet 2 is arranged on one side of the valve body 1, and a working port 4 is arranged on one side of the air inlet 2, and one end of the air inlet 2 and the working port 4 are connected to the working chamber 3; a valve flap assembly 6 is also arranged in the working chamber 3, and the valve flap assembly 6 includes an upper valve plate 62 and a lower valve plate 64 and a valve stem 60 sliding between the upper valve plate 62 and the lower valve plate 64; by moving the valve stem 60 downward, the air channel 61 provided on the valve stem 60 is connected with the air inlet 2, so that the air flow passes through the air channel 61 and flows to the working port 4; by moving the valve stem 60 upward, the air channel 61 is separated from the air inlet 2, while cutting off the air flow from the air inlet 2 to the working port 4, the air channel 61 can be connected with the exhaust port 7.

[0022] In summary, by moving the valve stem 60 between the two valve plates, and by moving the air channel 61 downward to communicate with the air inlet 2 and upward to communicate with the exhaust port 7, the air flow from the air inlet 2 to the working port 4 can be realized, and the exhaust port 7 can also be connected with the working port 4. The air channel 61 is directly opened on the valve stem 60, so that the device can realize the introduction and discharge of the air source by sliding the valve stem 60 up and down. It is simple and convenient, and also has a simple structure and is easy to use. In particular, the device uses a purely mechanical structure to complete the air flow in and out, and thus has the advantage of a longer service life compared to the electromagnetic exhaust valve.

[0023] Furthermore, since the valve flap assembly 6 also includes a support member 63; an air hole 66 is provided on the circumferential surface of the support member 63, and a slide groove 65 for guiding the sliding of the valve stem 60 is provided in the middle of the support member 63, the support member 63 can be used to guide the sliding of the valve stem 60, and the air hole 66 is arranged on the support member 63, so that the position of the air hole 66 can be ensured to remain unchanged regardless of how the valve stem 60 moves, thereby enabling smooth, stable and reliable switching of the air flow.

[0024] Furthermore, since there are multiple air channels 61 and the multiple air channels 61 are arranged in a circular array on the circumferential surface of the valve stem 60, the air flow can flow out smoothly through the air channels 61 to increase the air flow rate of the device per unit time. At the same time, there are multiple air holes 66, which are also arranged in a circular array on the circumferential surface of the support member 63.

[0025] Based on this, the device increases the number of air passages 61 and air holes 66 to increase the amount of airflow passing through the device per unit time, thereby reducing the amount of airflow obstructed by the device.

[0026] Specifically, since the upper valve plate 62 is installed above the support member 63, and the lower valve plate 64 is installed below the support member 63, the support member 63 can also be used to improve the manufacturing and positioning capabilities of the two valve plates, thereby preventing the two valve plates from sliding along the valve stem 60, which would cause the equipment to become airtight.

[0027] On the basis of the above scheme, a reset member 5 is further provided in the working chamber 3, and the reset member 5 is used to cause the valve stem 60 to reset after the external force disappears. Therefore, the reset member 5 can be used to cause the valve stem 60 to return to its initial state; wherein the reset member 5 is preferably a coil spring.

[0028] In order to reduce the processing difficulty of the equipment and facilitate the assembly of various components, a valve cover 8 is also provided on the valve body 1; the exhaust port 7 is arranged on the valve cover 8 and is connected to the valve body 1 through the valve cover 8, so that the reset member 5 and the valve flap assembly 6 are assembled to the valve body 1, and one end of the valve stem 60 away from the reset member 5 is exposed outside the valve cover 8.

[0029] In addition, in order to allow the air inlet 2 to be connected to the working chamber 3, a process hole 9 is also provided on the side of the valve body 1; wherein the central axis of the process hole 9 is perpendicular to the central axis of the air inlet 2, thereby allowing the air inlet 2 to be connected to the working chamber 3.

[0030] Furthermore, a plug 10 is provided at one end of the process hole 9 away from the working chamber 3 to prevent gas leakage. The plug 10 is preferably a steel ball, which is punched into the process hole 9 by a stamping process to block the process hole 9 to prevent gas leakage.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A two-position three-way mechanical valve, characterized in that: It comprises a valve body (1), a working chamber (3) arranged on the valve body (1), and an exhaust port (7) connected to and in communication with the working chamber (3); An air inlet (2) is provided on one side of the valve body (1), and a working port (4) is provided on one side of the air inlet (2), and one end of each of the air inlet (2) and the working port (4) is connected to and communicates with the working chamber (3); A valve flap assembly (6) is also provided in the working chamber (3), and the valve flap assembly (6) comprises an upper valve flap (62), a lower valve flap (64), and a valve stem (60) sliding between the upper valve flap (62) and the lower valve flap (64); By moving the valve stem (60) downward, the air passage (61) provided on the valve stem (60) is communicated with the air inlet (2), so that the airflow passes through the air passage (61) and flows to the working port (4); By moving the valve stem (60) upward, the air passage (61) is separated from the air inlet (2), and while the airflow from the air inlet (2) is cut off from flowing to the working port (4), the air passage (61) is simultaneously connected to the exhaust port (7).

2. A two-position three-way mechanical valve according to claim 1, characterized in that: The valve flap assembly (6) further comprises a support member (63); an air hole (66) is provided on the circumferential surface of the support member (63), and a sliding groove (65) for guiding the valve stem (60) to slide is provided in the middle of the support member (63).

3. A two-position three-way mechanical valve according to claim 2, characterized in that: The number of the air channels (61) is plural, and the plurality of air channels (61) are arranged in a circular array on the circumferential surface of the valve stem (60).

4. A two-position three-way mechanical valve according to claim 3, characterized in that: The upper valve plate (62) is installed above the support member (63), and the lower valve plate (64) is installed below the support member (63).

5. A two-position three-way mechanical valve according to any one of claims 1 to 4, characterized in that: A reset member (5) is also provided in the working chamber (3), and the reset member (5) causes the valve stem (60) to reset after the external force disappears.

6. A two-position three-way mechanical valve according to claim 5, characterized in that: The valve body (1) is also provided with a valve cover (8); the exhaust port (7) is arranged on the valve cover (8) and is connected to the valve body (1) through the valve cover (8) so as to assemble the reset member (5) and the valve flap assembly (6) onto the valve body (1), and one end of the valve stem (60) away from the reset member (5) is exposed outside the valve cover (8).

7. A two-position three-way mechanical valve according to claim 6, characterized in that: A process hole (9) is also provided on the side of the valve body (1), and the central axis of the process hole (9) and the central axis of the air inlet (2) are perpendicular to each other.

8. A two-position three-way mechanical valve according to claim 7, characterized in that: A plug (10) is also provided at one end of the process hole (9) away from the working chamber (3).

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