Large-diameter three-way stop valve

Abstract

The utility model relates to a large-caliber three-way stop valve which comprises a valve body, the valve body is of a three-way structure, the left side of the valve body of the three-way structure is connected with a left valve cover, the right side of the valve body is connected with a right valve cover, a valve clack moving in the valve body is connected in the valve body, the valve clack is connected with one end of a valve rod, and the other end of the valve rod is connected with a valve rod. The other end of the valve rod penetrates through the valve body to be connected with an external adjusting wheel, and under driving of the valve rod, the valve clack and an outlet in the left side of the valve body form a sealing structure or the valve clack and an outlet in the right side of the valve body form a sealing structure. The device is convenient to mount, dismount and replace, and is simple to maintain.

Description

Technical Field

[0001] This utility model relates to a large-diameter three-way shut-off valve. Background Technology

[0002] Currently, most three-way gate valves on the market are small-diameter. Because they need to handle fluids with large flow rates and high pressures, higher requirements are placed on their sealing performance, durability, and ease of operation. Traditional large-diameter three-way gate valves have some problems in actual use, such as easy wear of the sealing structure leading to leakage; unreasonable valve stem layout and valve disc movement in some valves, resulting in uneven stress on the sealing structure and unstable bidirectional sealing effect; the valve disc is subjected to fluid impact and mechanical wear during frequent opening and closing, resulting in a short service life; and the operating mechanism is not flexible enough, making it difficult to achieve precise control.

[0003] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a new type of large-diameter three-way stop valve with a new structure, making it more valuable for industrial applications. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a large-diameter three-way shut-off valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A large-diameter three-way shut-off valve includes a valve body with a three-way structure. A left valve cover is connected to the left side of the valve body, and a right valve cover is connected to the right side of the valve body. A valve disc that moves within the valve body is connected to the valve body. The valve disc is connected to one end of a valve stem, and the other end of the valve stem passes through the valve body and is connected to an external adjusting wheel. Under the action of the valve stem, the valve disc forms a sealing structure with the left outlet of the valve body or with the right outlet of the valve body.

[0007] Preferably, in the large-diameter three-way shut-off valve, the valve body is a large-diameter three-way valve body.

[0008] Preferably, in the large-diameter three-way shut-off valve, a positioning block for monitoring the valve disc switching position is connected to the valve body on the same side as the outer valve stem.

[0009] Preferably, in the large-diameter three-way shut-off valve, the positioning block is engraved with positioning scales for monitoring the valve disc switching position.

[0010] Preferably, in the large-diameter three-way shut-off valve, the valve disc has an I-shaped structure, and the left and right sides of the I-shaped valve disc form a sealing structure with the left and right outlets of the valve body, respectively.

[0011] Preferably, in the large-diameter three-way shut-off valve, a valve seat that forms a sealing structure with the valve disc is connected inside the valve body.

[0012] By means of the above solution, this utility model has at least the following advantages:

[0013] This invention employs a bidirectional sealing structure for the valve disc, which works in conjunction with the double valve seat structure within the valve body for positioning, thus achieving better sealing. Secondly, the valve stem is positioned on the right valve cover side, controlling the left and right movement of the valve disc, resulting in more even force distribution during movement and facilitating valve opening and closing. Finally, a positioning block is attached to the right valve cover to display the real-time valve on / off status. This structure is simple to disassemble, assemble, and maintain.

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

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

[0017] Figure 2 yes Figure 1 A sectional view;

[0018] Figure 3 This is a schematic diagram of the valve disc structure of this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] Example

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, a large-diameter three-way shut-off valve includes a valve body 1, which is a three-way valve body. A left valve cover 2 is connected to the left side of the three-way valve body 1, and a right valve cover 4 is connected to the right side of the valve body 1. A valve disc 3 that moves within the valve body 1 is connected inside the valve body 1. The valve disc 3 is connected to one end of a valve stem 5, and the other end of the valve stem 5 passes through the valve body 1 and is connected to an external adjusting wheel 7. Under the action of the valve stem 5, the valve disc 3 forms a sealing structure with the left outlet of the valve body 1 or with the right outlet of the valve body 1.

[0023] Example 1

[0024] Building upon the previous embodiment, this design further facilitates quick and easy confirmation of the valve disc's exact position by the operator, allowing them to immediately ascertain the valve body's operating status. The specific structure is as follows: a positioning block 6 for monitoring the valve disc's opening and closing position is connected to the valve body 1 on the same side as the outer valve stem 5. The positioning block 6 is engraved with positioning scales for monitoring the valve disc's opening and closing position. This design further enables the operator to know the exact location of the valve disc and the specific status of the valve body. The structure is simple, clear, and straightforward.

[0025] Example 2

[0026] Based on the embodiments and Embodiment 1, rapid sealing and opening / closing can be achieved for the left and right outlets of the three-way valve body. The specific structure is as follows: the valve disc 3 has an I-shaped structure. The left and right sides of the I-shaped valve disc 3 form a sealing structure with the left and right outlets of the valve body 1, respectively. Simultaneously, a valve seat, forming a sealing structure with the valve disc 3, is connected inside the valve body 1. This is used to cooperate with the double valve seat structure within the valve body for positioning, thus achieving better sealing.

[0027] The valve body of this utility model is mainly aimed at large-diameter three-way valve bodies, and is applicable to Embodiment 1 and Embodiment 2.

[0028] During installation, first install the left valve cover 2 and the left valve seat on the valve body 1, then install the valve disc 3 and the valve stem 5 through the right valve seat and the right valve cover 4 on the valve body 1, then install the positioning block 6 on the right valve cover 4, and finally perform welding.

[0029] The working principle of this utility model is as follows:

[0030] In actual operation, the valve disc is moved left and right by the valve stem. When the valve disc moves to the far left, a sealing structure is formed between the valve disc and the left outlet of the valve body. At this time, the right outlet of the valve body is connected to the liquid inlet. Conversely, when the valve disc moves to the far right, the left outlet of the valve body is connected to the liquid inlet. If the valve disc is moved to the middle of the valve body, the left and right outlets of the valve body are connected to the liquid inlet. At this time, the adjusting wheel 7 is in the "open" position of the positioning block.

[0031] The other "open" signifies that the "closed" signifies that the left "closed" signifies the left outlet seal, and the right "closed" signifies the right outlet seal.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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 application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A large-diameter three-way shut-off valve, comprising a valve body (1), characterized in that: The valve body (1) is a three-way valve body. The left side of the three-way valve body (1) is connected to a left valve cover (2), and the right side of the valve body (1) is connected to a right valve cover (4). The valve body (1) is connected to a valve disc (3) that moves within the valve body. The valve disc (3) is connected to one end of the valve stem (5), and the other end of the valve stem (5) passes through the valve body (1) and is connected to an external adjusting wheel (7). Under the drive of the valve stem (5), the valve disc (3) forms a sealing structure with the left outlet of the valve body (1) or with the right outlet of the valve body (1).

2. The large-diameter three-way shut-off valve according to claim 1, characterized in that: The valve body (1) is a large-diameter three-way valve body.

3. The large-diameter three-way shut-off valve according to claim 1, characterized in that: A positioning block (6) for monitoring the valve disc switching position is connected to the valve body (1) on the same side as the outer valve stem (5).

4. A large-diameter three-way shut-off valve according to claim 3, characterized in that: The positioning block (6) is engraved with positioning scales for monitoring the valve disc switching position.

5. A large-diameter three-way shut-off valve according to claim 1, characterized in that: The valve disc (3) has an I-shaped structure. The left and right sides of the valve disc (3) with the I-shaped structure form a sealing structure with the left and right outlets of the valve body (1), respectively.

6. A large-diameter three-way shut-off valve according to claim 5, characterized in that: The valve body (1) is internally connected to a valve seat that forms a sealing structure with the valve disc (3).

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