Pneumatic control fluid distribution valve

Abstract

The utility model provides a pneumatic control fluid distribution valve and belongs to the technical field of medical instruments. Comprising a valve body; the at least one air inlet joint is arranged on the valve body; the at least one air outlet joint is arranged on the valve body; the at least one straight-through gas joint is arranged on the valve body; the control gas connector is arranged on the valve body; the valve core assembly is arranged in the valve body in an axial moving manner; the elastic element is used for driving the valve core assembly to reset; the air inlet connector, the air outlet connector, the straight-through air connector and the control air connector are all communicated with an inner cavity of the valve body, and the on-off state of the control air connector controls the fluid passage state between the air inlet connector and the air outlet connector. The functions of a control valve and a distribution valve are integrated, water and gas pipelines and distribution of the dental treatment machine are conveniently controlled, the size of the valve body is reduced, the number of the pipelines is reduced, the attractiveness and maintenance convenience of equipment are improved, the structure is simple, and the integration level is high.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a pneumatic fluid distribution valve. It is a pneumatic control valve that integrates the functions of a distribution valve and is suitable for water and air pipelines in dental treatment machines, reducing the number of water and air pipelines and improving the aesthetics of pipeline layout. Background Technology

[0002] Currently, most dental treatment units employ a split-type structure for their water and air systems. This involves opening the main water and air inlet control valve via a main air switch, which then connects to the water and air distribution valves. Because this structure consists of control and distribution valves, it suffers from problems such as large size, high material consumption, high cost, complex structure, high failure rate, and complex water and air piping layout. Therefore, existing air control valves have a single function and cannot simultaneously perform control and distribution functions, leading to an increase in the number of pipes and affecting the aesthetics and reliability of the equipment. Improvements are necessary. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a pneumatically controlled fluid distribution valve. The purpose of this utility model is to provide a pneumatically controlled water-air distribution valve with simple structure, high integration, and good reliability, thereby solving the problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A pneumatically controlled fluid distribution valve, comprising:

[0006] Valve body;

[0007] At least one air inlet connector is provided on the valve body;

[0008] At least one air outlet connector is provided on the valve body;

[0009] At least one straight-through air connector is provided on the valve body;

[0010] A control air connector is provided on the valve body;

[0011] A valve core assembly that is axially movable within the valve body;

[0012] And an elastic element that drives the valve core assembly to reset;

[0013] The air inlet connector, air outlet connector, straight-through air connector, and control air connector are all connected to the valve body cavity. The opening and closing of the control air connector controls the fluid passage state between the air inlet connector and the air outlet connector.

[0014] Further defining the above scheme, the valve core assembly includes a movable valve core rod and at least two sealing elements disposed on the movable valve core rod, wherein the sealing elements form a switchable sealing fit with the inner wall of the valve body; the sealing elements are arranged at intervals along the axial direction of the movable valve core rod to form at least one switchable fluid distribution chamber.

[0015] Further defining the above solution, the sealing element is an O-ring, and its outer diameter is larger than the inner diameter of the valve core's moving cavity.

[0016] Further defining the above solution, the elastic element is a return spring, which is sleeved outside the movable valve core rod and placed in a spring groove inside the valve body.

[0017] A further limitation of the above scheme includes an end cap detachably connected to the valve body, wherein the control air connector is disposed on the end cap.

[0018] Further defining the above solution, there are multiple air outlet connectors, including air outlet connector I, air outlet connector II, and air outlet connector III, and at least one air outlet is kept in a normally open state.

[0019] As a further limitation of the above scheme, the position of the air outlet on the valve body can be adjusted according to usage requirements.

[0020] Further defining the above solution, both the air outlet connector and the straight-through air connector can be freely replaced with sealing elements according to usage requirements; the excess interfaces of the valve body are also sealed with sealing elements.

[0021] As a further definition of the above scheme, the fluid includes gas and / or liquid.

[0022] Further defining the above scheme, this pneumatic fluid distribution valve is suitable for use in water and gas pipelines to control the connection and distribution of water and gas.

[0023] Advantages of this utility model compared to the prior art:

[0024] 1. This solution provides a pneumatic fluid distribution valve that integrates the functions of a control valve and a distribution valve, facilitating the control of water and air pipelines and the distribution of water and air lines in dental treatment machines. It reduces the size of the valve body, the number of pipelines, improves the aesthetics and ease of maintenance of the equipment, and has a simple structure and high integration.

[0025] 2. This solution achieves excellent sealing performance through a multi-seal design on the movable valve core rod, resulting in good sealing performance and high reliability; the integrated design and adjustable joint arrangement simplify the piping system and improve the flexibility of use.

[0026] 3. The connectors in this solution can be freely replaced and their positions adjusted, making it flexible and convenient to use; it has low manufacturing costs, low failure rate, and long service life. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0029] Figure 3 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Please see Figure 1-3 The embodiments of this utility model are described in detail below.

[0034] Example: Figures 1 to 3As shown, this utility model provides a pneumatically controlled fluid distribution valve, comprising: a valve body 1; at least one air inlet connector 9 disposed on the valve body 1; at least one air outlet connector disposed on the valve body 1; at least one straight-through air connector 10 disposed on the valve body 1; a control air connector 3 disposed on the valve body 1; and a valve core assembly axially movable within the valve body 1.

[0035] And an elastic element that drives the valve core assembly to reset. The inlet connector 9, outlet connector, straight-through connector 10, and control connector 3 are all connected to the inner cavity of the valve body 1. The opening and closing of the control connector 3 controls the fluid passage state between the inlet connector 9 and the outlet connector.

[0036] In one specific embodiment, the valve core assembly includes a movable valve core rod 14 and at least two sealing elements disposed on the movable valve core rod 14. In this embodiment, a sealing ring II 12 is fitted on the upper outer side of the movable valve core rod 14, a sealing ring III 13 is fitted on the middle outer side of the movable valve core rod 14, and a sealing ring III 13 is fitted on the lower outer side of the movable valve core rod 14; each sealing element forms a switchable sealing fit with the inner wall of the valve body 1 to ensure a good seal with the inner wall of the valve body. The sealing elements are arranged axially at intervals along the movable valve core rod 14 to form at least one switchable fluid distribution chamber.

[0037] Preferably, the sealing element is an O-ring, and its outer diameter is larger than the hole size in the valve core's moving area to ensure a good sealing effect.

[0038] In one specific embodiment, the elastic element is a return spring 15, which is sleeved on the outside of the movable valve core rod 14 and placed in the spring groove inside the valve body 1.

[0039] In one specific embodiment, an end cap 2 is detachably connected to the valve body 1. The end cap 2 is fixedly mounted on the upper end of the valve body 1 by screws 4, and a sealing ring I11 is provided between the two to ensure a seal. The thickness of the sealing ring I11 is greater than the depth of the sealing ring groove at the end of the valve body 1. The control air connector 3 is located on the end cap 2 and communicates with the interior of the end cap 2. The end of the movable valve core rod 14 is located at the lower part of the end cap 2.

[0040] In one specific embodiment, there are multiple air outlet connectors, including one air outlet connector I6, three air outlet connectors II7, and two air outlet connectors III8, which are bonded with anaerobic adhesive, and at least one air outlet is kept in a normally open state.

[0041] Preferably, the position of the air outlet on the valve body 1 can be adjusted according to usage requirements.

[0042] Preferably, the air outlet connector I6, air outlet connector II7, air outlet connector III8, and straight-through air connector 10 can all be freely replaced or repositioned using sealing elements such as plugs 5, improving the flexibility of use. Any unnecessary ports on the valve body 1 are also sealed using sealing elements.

[0043] Preferably, the fluid includes gas and / or liquid.

[0044] Preferably, the pneumatic fluid distribution valve is suitable for use in water and gas pipelines to control the connection and distribution of water and gas.

[0045] In this invention, the sealing rings II12 at the top, III13 in the middle, and III13 at the bottom of the movable valve core rod 14 are all sealed to the inner hole of the valve body 1. The upper end of the valve body 1 is sealed to the bottom of the end cover 2 by a sealing ring I11. Therefore, when air is supplied to the inlet connector 9, the movable valve core rod 14 moves upward and returns to its original position under the force of the return spring 15, contacting the bottom of the end cover 2. Airflow will not pass through the edge of the end cover 2. Except for the outlet air connector 10, all other connectors are disconnected due to the return of the movable valve core rod 14. When the control air connector 3 is supplied, the airflow pushes the movable valve core rod 14 downward, connecting the air supply to the outlet air connector 9 to achieve the distribution function. When the airflow to the control air connector 3 is disconnected, the movable valve core rod 14 moves upward and returns to its original position under the force of the return spring 15. Except for the outlet air connector 10, all other outlet air connectors are disconnected.

[0046] Working principle: When the control air connector 3 is not ventilated, the movable valve core 14 is in the upper position under the action of the return spring 15. At this time, only the straight-through air connector 10 is ventilated, while the other air outlet connectors are closed. When the control air connector 3 is ventilated, the air pressure pushes the movable valve core rod 14 downward, connecting the air inlet connector 9 with each air outlet connector, thus realizing the air distribution function.

[0047] This utility model integrates the functions of a control valve and a distribution valve into one unit, which facilitates the control and distribution of water and air pipelines in dental treatment machines, reduces the size of the valve body and the number of pipelines, improves the aesthetics and ease of maintenance of the equipment, and has a simple structure and high degree of integration.

[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pneumatically controlled fluid distribution valve, characterized in that: include: Valve body (1); At least one air inlet connector (9) is provided on the valve body (1); At least one air outlet connector is provided on the valve body (1); At least one straight-through air connector (10) is provided on the valve body (1); A control air connector (3) is provided on the valve body (1); A valve core assembly that is axially movable within the valve body (1); And an elastic element that drives the valve core assembly to reset; Among them, the air inlet connector (9), air outlet connector, direct air connector (10), and control air connector (3) are all connected to the inner cavity of the valve body (1). The opening and closing of the control air connector (3) controls the fluid passage state between the air inlet connector (9) and the air outlet connector.

2. The pneumatically controlled fluid distribution valve according to claim 1, characterized in that: The valve core assembly includes a movable valve core rod (14) and at least two seals disposed on the movable valve core rod (14). The seals form a switchable sealing fit with the inner wall of the valve body (1). The seals are arranged axially along the movable valve core rod (14) to form at least one switchable fluid distribution chamber.

3. The pneumatically controlled fluid distribution valve according to claim 2, characterized in that: The sealing element is an O-ring, and its outer diameter is larger than the inner diameter of the valve core's moving cavity.

4. A pneumatically controlled fluid distribution valve according to claim 2, characterized in that: The elastic element is a return spring (15), which is sleeved on the outside of the movable valve core rod (14) and placed in the spring groove inside the valve body (1).

5. A pneumatically controlled fluid distribution valve according to claim 1, characterized in that: It also includes an end cap (2) detachably connected to the valve body (1), and the control air connector (3) is provided on the end cap (2).

6. A pneumatically controlled fluid distribution valve according to claim 1, characterized in that: There are multiple air outlet connectors, including air outlet connector I (6), air outlet connector II (7), and air outlet connector III (8), and at least one air outlet is kept in a normally open state.

7. A pneumatically controlled fluid distribution valve according to claim 6, characterized in that: The position of the air outlet on the valve body (1) can be adjusted according to usage requirements.

8. A pneumatically controlled fluid distribution valve according to claim 1, characterized in that: The air outlet connector and the straight air connector (10) can be freely replaced with sealing elements according to usage requirements; the extra ports of the valve body (1) are also sealed by sealing elements.

9. A pneumatically controlled fluid distribution valve according to claim 1, characterized in that: The fluid includes gas and / or liquid.

10. A pneumatically controlled fluid distribution valve according to any one of claims 1-9, characterized in that: This pneumatic fluid distribution valve is suitable for use in water and gas pipelines to control the connection and distribution of water and gas.

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