Pneumatic stainless steel ball valve

Abstract

The utility model relates to a pneumatic stainless steel ball valve which comprises a valve body and a ball body rotationally arranged in the valve body, and the valve body is provided with a plurality of fluid channels used for medium circulation. The outer portions of the opening faces of the fluid channels are in threaded connection with sealing covers, and the sealing covers are used for blocking the opening faces, opposite to each other, of the fluid channels. Annular grooves facing the corresponding sealing covers are integrally formed in the outer side walls of the opening faces of the fluid channels, first sealing rings are arranged on the side walls, facing the annular grooves, of the sealing covers, and the annular grooves are matched with the first sealing rings in shape. When the sealing cover is screwed on the fluid channel, the first sealing ring is attached to the annular groove in an inserted mode. The ball valve has the effects that external solid impurities can be effectively prevented from entering the valve body, and normal rotation of the ball body is guaranteed.

Description

Technical Field

[0001] This application relates to the field of ball valve technology, and in particular to a pneumatic stainless steel ball valve. Background Technology

[0002] Currently, pneumatic stainless steel ball valves are automated control valves that combine a stainless steel ball valve with a pneumatic actuator. They are widely used in various industrial fields to achieve efficient control of the flow of liquid or gas media. The main body of a stainless steel ball valve includes the valve body, ball, and stem. The ball rotates within the valve body to control the opening or closing of the fluid passage. The stainless steel material provides excellent corrosion resistance and durability.

[0003] Regarding the main body of the aforementioned stainless steel ball valve, when the fluid channel is not yet connected to the external pipeline, external impurities can easily enter the valve body through the fluid channel. If solid impurities accidentally fall onto the rotation path outside the ball, they will obstruct the normal rotation of the ball, resulting in poor ball rotation. Utility Model Content

[0004] This application provides a pneumatic stainless steel ball valve that effectively prevents external solid impurities from entering the valve body through the fluid channel, thereby ensuring the normal rotation of the ball.

[0005] The pneumatic stainless steel ball valve provided in this application adopts the following technical solution:

[0006] A pneumatic stainless steel ball valve includes a valve body and a ball rotatably disposed within the valve body. The valve body has multiple fluid channels for media flow. A sealing cap is threaded onto the external opening of each fluid channel, and the sealing cap seals the opening of each corresponding fluid channel. An annular groove facing the sealing cap is integrally formed on the outer wall of the opening of each fluid channel. A first sealing ring is disposed on the side wall of the sealing cap facing the annular groove, and the shape of the annular groove matches the shape of the first sealing ring. When the sealing cap is tightened onto the fluid channel, the first sealing ring and the annular groove interlock and fit together.

[0007] Preferably, a filter element is coaxially arranged on the inner wall of the fluid channel, and the filter element has filter holes for the medium to pass through.

[0008] Preferably, the fluid channel is detachably installed outside the valve body, and fasteners are provided on the outer wall of the fluid channel. The outer wall of the valve body is provided with a plurality of threaded holes facing the fluid channel, and the threaded holes are used for fasteners to be tightened into the valve body.

[0009] Preferably, the valve body is provided with a plug hole facing the fluid channel, the plug hole being used for inserting the end of the fluid channel into the valve body; the valve body is also integrally formed with a limiting groove coaxial with the plug hole, the inner diameter of the limiting groove being larger than the inner diameter of the plug hole; a limiting plate with a shape adapted to the shape of the limiting groove is integrally formed on the outer wall of the fluid channel, the limiting plate being used for inserting into the limiting groove, and the limiting plate and the inner wall of the limiting groove being in close contact with each other.

[0010] Preferably, a second sealing ring is coaxially sleeved on the outside of the limiting plate, and the second sealing ring abuts against the inner sidewall of the limiting groove.

[0011] Preferably, a snap-fit ​​element is provided on the outer wall of the fluid channel, and a snap-fit ​​seat corresponding to the snap-fit ​​element is provided on the outer wall of the valve body. The snap-fit ​​element is used to engage with its corresponding snap-fit ​​seat.

[0012] Preferably, the fasteners located on the same fluid channel are symmetrically arranged on both sides of the fluid channel.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] When the valve body is idle, each sealing cap is tightened and fixed onto the fluid channel. At this time, the sealing caps can seal and block the opening of the fluid channel, thereby effectively preventing external solid impurities from entering the valve body and ensuring the normal rotation of the ball. After the sealing caps are installed, the sealing effect of the sealing caps can be further enhanced by the interlocking and fitting of the first sealing ring and the annular groove, thereby effectively preventing external sewage from entering the valve body from between the sealing cap and the outer wall of the fluid channel.

[0015] Filter elements can filter solid impurities in the medium, thereby ensuring the cleanliness of the medium;

[0016] When installing the fluid channel, the snap fastener and the snap fastener seat are pre-engaged to each other. This will initially limit and fix the fluid channel to the outside of the valve body, which facilitates the positioning of the fluid channel and also facilitates the further fixing of the fasteners. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0018] Figure 2 yes Figure 1 A schematic diagram of a partial structural explosion;

[0019] Figure 3 yes Figure 2 A schematic diagram of a partial structural explosion from another perspective.

[0020] Explanation of reference numerals in the attached drawings: 1. Valve body; 10. Ball; 11. Fluid passage; 110. Fastener; 12. Annular groove; 13. Threaded hole; 14. Insertion hole; 15. Limiting groove; 16. Limiting plate; 160. Second sealing ring; 17. Snap fastener; 18. Snap fastener seat; 2. Sealing cover; 20. First sealing ring; 3. Filter element; 30. Filter hole. Detailed Implementation

[0021] The present application is further described in detail below with reference to the accompanying drawings.

[0022] This application discloses a pneumatic stainless steel ball valve.

[0023] Reference Figure 1 The pneumatic stainless steel ball valve includes a valve body 1 and a ball 10 rotatably disposed within the valve body 1. The valve body 1 has multiple fluid channels 11 detachably installed on its exterior for the flow of media. In this embodiment, a three-way valve body 1 is used as an example.

[0024] like Figure 2 , Figure 3 As shown, four fasteners 110 are installed on the outer wall of the fluid channel 11, and the fasteners 110 are located at the four corners of the fluid channel 11. In this embodiment, the fasteners 110 are bolts. The outer wall of the valve body 1 is provided with a plurality of threaded holes 13 facing the respective fluid channels 11. The positions of the threaded holes 13 correspond one-to-one with the fasteners 110, and the threaded holes 13 are used for inserting and tightening the ends of the respective fasteners 110 into the valve body 1. The fluid channels 11 are pressed and fixed to the outer wall of the valve body 1 by the respective fasteners 110.

[0025] like Figure 2 , Figure 3 As shown, two snap-fit ​​pieces 17 are fixedly installed on the outer wall of the fluid channel 11. The snap-fit ​​pieces 17 are symmetrically arranged on the opposite outer walls of the fluid channel 11. The snap-fit ​​pieces 17 are made of plastic with a certain elastic deformation capability. One end of the snap-fit ​​piece 17 extends towards the valve body 1 to one side of the valve body 1. A snap-fit ​​seat 18 corresponding to each snap-fit ​​piece 17 is fixedly installed on the outer wall of the valve body 1. The snap-fit ​​pieces 17 are used to engage with their respective snap-fit ​​seats 18. When installing the fluid channel 11, the snap-fit ​​pieces 17 and snap-fit ​​seats 18 are pre-engaged, which initially limits and fixes the fluid channel 11 to the outside of the valve body 1, thereby achieving the positioning of the fluid channel 11 and facilitating further fixing of the fasteners 110.

[0026] like Figure 2 , Figure 3As shown, a sealing cap 2 is threaded onto the external opening face of the fluid channel 11, and the sealing cap 2 is used to seal the opening faces of the respective fluid channels 11. An annular groove 12 is integrally formed on the outer wall of the opening face of the fluid channel 11, facing the respective sealing cap 2. The annular groove 12 is coaxially arranged with the opening of the fluid channel 11. A first sealing ring 20 is fixedly disposed on the side wall of the sealing cap 2 facing the annular groove 12, and the shape of the annular groove 12 matches the shape of the first sealing ring 20. When the sealing cap 2 is tightened and fixed on the respective fluid channel 11, the first sealing ring 20 will interlock and fit with the respective corresponding annular groove 12. Through the interlocking and fitting of the first sealing ring 20 and the annular groove 12, the sealing effect of the sealing cap 2 can be further enhanced, thereby effectively preventing external sewage from entering the valve body 1 through the gap between the sealing cap 2 and the outer wall of the fluid channel 11.

[0027] like Figure 2 , Figure 3 As shown, the valve body 1 is provided with insertion holes 14 facing the respective fluid channels 11, and the insertion holes 14 are used for inserting the ends of the fluid channels 11 into the valve body 1. A limiting groove 15 coaxial with the insertion hole 14 is also integrally formed on the outer wall of the valve body 1, and the inner diameter of the limiting groove 15 is larger than the inner diameter of the insertion hole 14. A limiting plate 16 with a shape adapted to the limiting groove 15 is integrally formed on the outer wall of the fluid channel 11, and the limiting plate 16 is used for insertion into the limiting groove 15, and the limiting plate 16 and the inner wall of the limiting groove 15 are in close contact with each other.

[0028] like Figure 2 , Figure 3 As shown, a second sealing ring 160 is coaxially fixedly sleeved on the outside of the limiting plate 16, and the second sealing ring 160 abuts against the inner sidewall of the limiting groove 15. The second sealing ring 160 further improves the waterproof sealing between the contact surfaces of the limiting plate 16 and the limiting groove 15, thereby effectively preventing leakage from the installation surface of the fluid channel 11.

[0029] like Figure 2 , Figure 3 As shown, a filter element 3 is coaxially and detachably installed on the inner wall of the fluid channel 11. In this embodiment, the filter element 3 is a stainless steel filter screen. The filter element 3 has a large number of filter holes 30 for the medium to pass through. The filter element 3 can filter solid impurities in the medium, thereby ensuring the cleanliness of the medium.

[0030] The implementation principle is as follows: When the valve body 1 is in an idle state, each sealing cap 2 is tightened and fixed onto the fluid channel 11. At this time, the opening of the fluid channel 11 is sealed and blocked by the sealing cap 2, thereby effectively preventing external solid impurities from entering the valve body 1 and ensuring the normal rotation of the ball 10. After the installation of the sealing cap 2 is completed, the sealing effect of the sealing cap 2 is further enhanced by the mutual insertion and fit between the first sealing ring 20 and the annular groove 12, thereby effectively preventing external sewage from entering the valve body 1 from between the sealing cap 2 and the outer wall of the fluid channel 11.

[0031] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pneumatic stainless steel ball valve, comprising a valve body (1) and a ball (10) rotatably disposed within the valve body (1), wherein the valve body (1) is provided with a plurality of fluid channels (11) for the flow of a medium; characterized in that: The fluid channel (11) has a sealing cap (2) threaded on its opening surface. The sealing cap (2) is used to block the opening surfaces of the fluid channels (11) respectively. The outer wall of the opening surface of the fluid channel (11) has an annular groove (12) integrally formed facing the sealing cap (2). The sealing cap (2) has a first sealing ring (20) on its side wall facing the annular groove (12). The shape of the annular groove (12) is adapted to the shape of the first sealing ring (20). When the sealing cap (2) is screwed onto the fluid channel (11), the first sealing ring (20) and the annular groove (12) are inserted and fitted together.

2. The pneumatic stainless steel ball valve according to claim 1, characterized in that: A filter element (3) is coaxially arranged on the inner wall of the fluid channel (11), and the filter element (3) has filter holes (30) for the medium to pass through.

3. The pneumatic stainless steel ball valve according to claim 2, characterized in that: The fluid channel (11) is detachably installed outside the valve body (1). Fasteners (110) are provided on the outer wall of the fluid channel (11). A plurality of threaded holes (13) facing the fluid channel (11) are provided on the outer wall of the valve body (1). The threaded holes (13) are used for the fasteners (110) to be screwed into the valve body (1).

4. The pneumatic stainless steel ball valve according to claim 3, characterized in that: The valve body (1) is provided with a plug hole (14) facing the fluid channel (11), the plug hole (14) is used for the end of the fluid channel (11) to be inserted into the valve body (1); the valve body (1) is also integrally formed with a limiting groove (15) coaxial with the plug hole (14), the inner diameter of the limiting groove (15) is larger than the inner diameter of the plug hole (14); the outer wall of the fluid channel (11) is integrally formed with a limiting plate (16) whose shape is adapted to the shape of the limiting groove (15), the limiting plate (16) is used to be inserted into the limiting groove (15), and the limiting plate (16) and the inner wall of the limiting groove (15) are in close contact with each other.

5. The pneumatic stainless steel ball valve according to claim 4, characterized in that: The limiting plate (16) is coaxially fitted with a second sealing ring (160), and the second sealing ring (160) abuts against the inner sidewall of the limiting groove (15).

6. The pneumatic stainless steel ball valve according to claim 3, characterized in that: The fluid channel (11) is provided with a snap fastener (17) on its outer side wall, and the valve body (1) is provided with a snap fastener seat (18) corresponding to the snap fastener (17) on its outer side wall. The snap fastener (17) is used to engage with its respective snap fastener seat (18).

7. The pneumatic stainless steel ball valve according to claim 6, characterized in that: The fasteners (17) located on the same fluid channel (11) are symmetrically arranged on both sides of the fluid channel (11).

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