A three-way bullet valve

Abstract

This utility model relates to the field of three-way valve technology, and more particularly to a three-way bullet valve, comprising a valve body and a valve core. The valve core includes a valve seat, a valve core plug, a valve stem, and a actuator. The valve seat has a first port, a second port, and a third port. The valve core plug is disposed within the valve seat and is used to control the opening or closing of the first port, the second port, and the third port. The valve stem is connected between the valve core plug and the actuator. The actuator drives the valve core plug to move along the valve seat via the valve stem. This utility model uses the actuator to push the valve stem to make linear motion, and the valve stem drives the valve core plug to slide within the valve seat, so that the first port is connected to the second port; the second port is connected to the third port; and the first port, the second port, and the third port are connected. By controlling the position of the valve core plug, it can realize the functions of one inlet and one outlet, one inlet and two outlets, or two inlets and one outlet merging. It also has advantages such as low flow resistance, fast switching, and reliable sealing, and is especially suitable for high-frequency, high-precision fluid control applications.

Description

Technical Field

[0001] This utility model relates to the field of three-way valve technology, and in particular to a three-way bullet valve. Background Technology

[0002] In industries such as chemical, petroleum, and water treatment, three-way valves are widely used for fluid flow direction switching control. Traditional three-way valves (such as ball valves and plug valves) typically employ a rotary valve core structure, which presents the following problems:

[0003] High flow resistance and high pressure drop, the rotary valve core plug has many bends in the flow path, resulting in high fluid resistance and increased energy consumption.

[0004] The switching speed is slow, the rotational motion relies on gears or linkages, and the response is delayed, making it unsuitable for fast-switching scenarios.

[0005] Severe wear of the seal and frequent friction between the valve core plug and valve seat lead to seal failure, requiring frequent maintenance. Therefore, it is necessary to improve the seal. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a three-way bullet valve. A driver pushes the valve stem to move linearly, causing the valve stem to slide within the valve seat, connecting the first port to the second port; the second port to the third port; and the first, second, and third ports. By controlling the position of the valve stem, it achieves flow splitting (one inlet, one outlet; one inlet, two outlets) or merging (two inlets, one outlet). It also features low flow resistance, fast switching, and reliable sealing, making it particularly suitable for high-frequency, high-precision fluid control applications.

[0007] To achieve the above objectives, this utility model provides a three-way bullet valve, comprising a valve seat, a valve core plug, a valve stem, and a actuator.

[0008] The valve seat is provided with a first port, a second port, and a third port;

[0009] The valve core plug is disposed inside the valve seat and is used to control the opening or closing of the first port, the second port and the third port;

[0010] The valve stem is connected between the valve core plug and the actuator;

[0011] The actuator drives the valve core plug to move along the inside of the valve seat via the valve stem.

[0012] Preferably, the valve seat is provided with a first chamber, a second chamber, and a third chamber corresponding to the first port, the second port, and the third port, respectively.

[0013] Preferably, the valve core plug includes a first plug body and a second plug body, the first plug body and the second plug body are disposed opposite to each other, and the first plug body is used to control the opening and closing between the first chamber and the second chamber;

[0014] The second plug is used to control the connection or disconnection between the second chamber and the third chamber.

[0015] Preferably, both the first plug body and the first plug body include a first fixing part, an abutting part, an interference part, and a second fixing part;

[0016] The valve stem is provided with a first fixing groove, a protrusion, and a second fixing groove.

[0017] The first fixing part is fixed to the first fixing groove, the abutting part and the interference part are both fixed to the protrusion, and the second fixing part is fixed to the second fixing groove.

[0018] Preferably, a first sealing groove is provided at both ends of the valve stem, and a first sealing ring is provided in the first sealing groove, and the first sealing ring abuts against the inner wall of the valve seat.

[0019] A return spring is provided at one end of the valve stem near the actuator. The return spring abuts against the outside of the first sealing groove and between the valve seat to reset the valve stem.

[0020] Preferably, the valve seat includes a first valve chamber and a second valve chamber, wherein the first valve chamber and the second valve chamber are threadedly connected;

[0021] A sealing sleeve is provided at the threaded connection between the first valve cavity and the second valve cavity, and the sealing sleeve is threadedly connected to the first valve cavity.

[0022] Preferably, a second sealing groove is provided between the sealing sleeve and the first valve cavity, and a second sealing ring is provided in the second sealing groove, the second sealing ring abutting against the first valve cavity.

[0023] Preferably, the second valve cavity is provided with an inner sleeve, a skeleton, and a sliding sleeve;

[0024] The inner sleeve is disposed inside the second valve cavity;

[0025] The skeleton passes through the inner sleeve, the sliding sleeve is disposed at the end of the skeleton near the first valve cavity, the valve stem is slidably connected to the sliding sleeve, and the actuator is fixed at the end of the skeleton away from the sliding sleeve.

[0026] Preferably, the valve seat includes an end cap, the end cap being provided with a connection terminal, the connection terminal being electrically connected to the driver.

[0027] Preferably, the end cap is provided with a retaining edge, and the outer wall of the valve seat is provided with a retaining groove, and the end cap is connected to the retaining groove of the valve seat through the retaining edge.

[0028] The beneficial effects of this utility model are as follows: This utility model drives the valve stem to move linearly through the driver, and the valve stem drives the valve core plug to slide in the valve seat, so that the first port is connected to the second port; the second port is connected to the third port; the first port, the second port and the third port are connected. By controlling the position of the valve core plug, the flow splitting function of one inlet and one outlet, one inlet and two outlets or two inlets and one outlet can be realized. At the same time, it has the advantages of low flow resistance, fast switching and reliable sealing, and is especially suitable for high frequency and high precision fluid control applications. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model.

[0030] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0031] Figure 3 This is a cross-sectional view of the valve core plug and valve stem of this utility model.

[0032] The reference numerals in the figures include:

[0033] 1. Valve seat; 101. First port; 102. Second port; 103. Third port; 104. First chamber; 105. Second chamber; 106. Third chamber; 107. First valve cavity; 108. Second valve cavity; 11. Sealing sleeve; 12. Second sealing groove; 13. Second sealing ring; 14. Inner sleeve; 15. Skeleton; 16. Sliding sleeve; 17. End cap; 171. Clamping edge; 18. Connecting terminal; 19. Slot;

[0034] 2. Valve core plug; 21. First plug body; 22. Second plug body; 201. First fixing part; 202. Abutting part; 203. Interference fit part; 204. Second fixing part;

[0035] 3. Valve stem; 31. First fixing groove; 32. Protrusion; 33. Second fixing groove; 34. First sealing groove; 35. First sealing ring; 36. Return spring;

[0036] 4. Driver. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings.

[0038] like Figures 1 to 3 As shown, a three-way bullet valve of this utility model includes a valve seat 1, a valve core plug 2, a valve stem 3, and a driver 4.

[0039] The valve seat 1 is provided with a first port 101, a second port 102 and a third port 103;

[0040] The valve core plug 2 is disposed inside the valve seat 1 and is used to control the opening or closing of the first port 101, the second port 102 and the third port 103;

[0041] The valve stem 3 is connected between the valve core plug 2 and the actuator 4;

[0042] The actuator 4 drives the valve core plug 2 to move along the inside of the valve seat 1 via the valve stem 3.

[0043] Specifically, the valve stem 3 is directly driven by the driver 4 (such as a pneumatic, electric or hydraulic actuator), which causes the valve core plug 2 to move linearly within the valve seat 1, thereby achieving rapid switching and opening / closing of the three ports. The structure is compact and the operation is reliable.

[0044] The valve core plug 2 slides within the valve seat 1 to control the opening and closing of the flow channel between the first port 101, the second port 102, and the third port 103. The valve core plug 2 has a bullet-shaped profile, which optimizes the fluid path, reduces pressure loss, and ensures sealing. This makes the flow resistance of the valve core plug 2 within the valve seat 1 small, while the linear movement of the valve core plug 2 reduces friction and improves sealing.

[0045] The valve core plug 2 is directly connected to the valve stem 3, which reduces mechanical transmission parts, lowers the failure rate, and facilitates disassembly and maintenance.

[0046] In use, the actuator 4 pushes the valve stem 3 to move linearly, and the valve stem 3 drives the valve core plug 2 to slide in the valve seat 1, so that the first port 101 is connected to the second port 102; the second port 102 is connected to the third port 103; the first port 101, the second port 102 and the third port 103 are connected, and by controlling the position of the valve core plug 2, the functions of one inlet and one outlet, one inlet and two outlets or two inlets and one outlet can be realized; at the same time, it has the advantages of low flow resistance, fast switching and reliable sealing, and is especially suitable for high frequency and high precision fluid control applications.

[0047] like Figure 2 As shown, in this embodiment, the valve seat 1 is provided with a first chamber 104, a second chamber 105, and a third chamber 106 corresponding to the first port 101, the second port 102, and the third port 103, respectively.

[0048] Specifically, the valve seat 1 is divided into three independent chambers: a first chamber 104, a second chamber 105, and a third chamber 106. Each chamber corresponds to one port, facilitating precise control of fluid flow and maintenance operations. This improves the adaptability of the bullet valve under different operating conditions, simplifies maintenance and replacement procedures, and enhances overall reliability.

[0049] like Figure 2As shown, the valve core plug 2 in this embodiment includes a first plug body 21 and a second plug body 22, which are arranged opposite to each other. The first plug body 21 is used to control the opening and closing between the first chamber 104 and the second chamber 105.

[0050] The second plug 22 is used to control the connection and disconnection between the second chamber 105 and the third chamber 106.

[0051] Specifically, the connection and disconnection between the first chamber 104 and the second chamber 105, and between the second chamber 105 and the third chamber 106 are independently controlled by the first plug 21 and the second plug 22, respectively. The positions of the first plug 21 and the second plug 22 are controlled to connect the first port 101 and the second port 102; the second port 102 and the third port 103; and the first port 101, the second port 102, and the third port 103, thereby achieving a one-in-one-out, one-in-two-out, or two-in-one-out flow separation or merging function.

[0052] In use, the first plug 21 is brought close to the connection between the first chamber 104 and the second chamber 105, thereby disconnecting the first chamber 104 from the second chamber 105, and thus disconnecting the first port 101 from the second port 102; similarly, the first plug 21 is moved away from the connection between the first chamber 104 and the second chamber 105, thereby connecting the first chamber 104 to the second chamber 105, and thus connecting the first port 101 to the second port 102.

[0053] Similarly, when the second plug 22 is close to the connection between the second chamber 105 and the third chamber 106, it disconnects the second chamber 105 from the third chamber 106, thereby disconnecting the second port 102 and the third port 103; when the second plug 22 is away from the connection between the second chamber 105 and the third chamber 106, it connects the second chamber 105 to the third chamber 106, thereby connecting the second port 102 and the third port 103.

[0054] By using a structure with opposing flow paths, interference between the two fluid streams is avoided. This enables precise control of the fluid flow direction, reduces misoperation or crossflow, and improves the system's reliability and safety.

[0055] The first plug body 21 and the second plug body 22 are independent of each other and can be disassembled and replaced individually without replacing the entire valve core plug 2 assembly. This simplifies the maintenance and replacement process, reduces maintenance difficulty and cost, and enhances the applicability and economy of the valve core plug 2.

[0056] like Figure 3 As shown, in this embodiment, both the first plug 21 and the second plug 22 include a first fixing part 201, an abutting part 202, an interference part 203, and a second fixing part 204.

[0057] The valve stem 3 is provided with a first fixing groove 31, a protrusion 32, and a second fixing groove 33.

[0058] The first fixing part 201 is fixed to the first fixing groove 31, the abutting part 202 and the interference part 203 are both fixed to the protrusion 32, and the second fixing part 204 is fixed to the second fixing groove 33.

[0059] Specifically, the first fixing part 201 is fixed to the first fixing groove 31, the abutting part 202 and the interference fit part 203 are both fixed to the protrusion 32, and the second fixing part 204 is fixed to the second fixing groove 33. This ensures that the first plug 21 and the second plug 22 are fixed to the valve stem 3 at multiple points, making the connection between the valve core plug 2 and the valve stem 3 more secure. This reduces the loosening or displacement of the valve core plug 2 during frequent operation, improving the reliability and durability of the bullet valve.

[0060] like Figure 2 As shown, in this embodiment, the valve stem 3 is provided with a first sealing groove 34 at both ends, and a first sealing ring 35 is provided in the first sealing groove 34. The first sealing ring 35 abuts against the inner wall of the valve seat 1.

[0061] A return spring 36 is provided at one end of the valve stem 3 near the driver 4. The return spring 36 abuts between the first sealing groove 34 and the valve seat 1 to reset the valve stem 3.

[0062] Specifically, the first sealing ring 35 is confined by the first sealing groove 34, and the first sealing ring 35 is in close contact with the inner wall of the valve seat 1, forming an effective sealing barrier. This prevents fluid leakage along the valve stem 3, significantly improves the sealing performance inside the valve seat 1, and reduces energy loss and maintenance requirements caused by leakage.

[0063] The return spring 36 abuts against the outer side of the first sealing groove 34 and between it and the valve seat 1. When the actuator 4 stops operating, the spring force pushes the valve stem 3 back to its initial position. This ensures that the valve stem 3 can quickly and accurately reset after the switching action is completed, avoiding operational errors caused by jamming or delay, and improving response speed and operating efficiency.

[0064] like Figure 2 As shown, the valve seat 1 in this embodiment includes a first valve chamber 107 and a second valve chamber 108, and the first valve chamber 107 and the second valve chamber 108 are threadedly connected.

[0065] A sealing sleeve 11 is provided at the threaded connection between the first valve chamber 107 and the second valve chamber 108, and the sealing sleeve 11 is threadedly connected to the first valve chamber 107.

[0066] Specifically, the first valve chamber 107 and the second valve chamber 108 are threaded together, improving assembly convenience. The threaded connection combines the first valve chamber 107 and the second valve chamber 108, avoiding complex welding or flange connections and simplifying the assembly process. This reduces installation and maintenance difficulty, improves assembly efficiency, and facilitates disassembly and replacement of components, enhancing the maintainability of the bullet valve.

[0067] A sealing sleeve 11 is provided at the threaded connection between the first valve chamber 107 and the second valve chamber 108. The sealing sleeve 11 is threadedly connected to the first valve chamber 107, forming an additional sealing barrier to prevent fluid leakage from the connection. This significantly improves the sealing performance at the connection, reduces energy loss and safety hazards caused by leakage, and extends the service life of the bullet valve.

[0068] like Figure 2 As shown, in this embodiment, a second sealing groove 12 is provided between the sealing sleeve 11 and the first valve cavity 107, and a second sealing ring 13 is provided in the second sealing groove 12, and the second sealing ring 13 abuts against the first valve cavity 107.

[0069] Specifically, the close contact between the second sealing ring 13 and the first valve cavity 107 forms an additional sealing barrier. This further enhances the sealing effect between the first valve cavity 107 and the sealing sleeve 11, effectively preventing fluid leakage and improving the overall sealing performance of the bullet valve.

[0070] like Figure 2 As shown, the second valve chamber 108 in this embodiment is provided with an inner sleeve 14, a skeleton 15 and a sliding sleeve 16;

[0071] The inner sleeve 14 is disposed within the second valve cavity 108;

[0072] The frame 15 passes through the inner sleeve 14, the sliding sleeve 16 is disposed at one end of the frame 15 near the first valve cavity 107, the valve stem 3 is slidably connected to the sliding sleeve 16, and the driver 4 is fixed to one end of the frame 15 away from the sliding sleeve 16.

[0073] Specifically, the inner sleeve 14 is disposed in the second valve cavity 108, serving as the mounting base for the skeleton 15 and the sliding sleeve 16, and also protecting the inner wall of the valve cavity.

[0074] The skeleton 15 is inserted into the inner sleeve 14, providing stable support and precise guidance for the sliding sleeve 16, valve stem 3, and actuator 4, ensuring that each component maintains precise alignment during movement. This reduces the offset or wobbling of the valve stem 3 and sliding sleeve 16 during operation, improving the smoothness and reliability of the bullet valve's operation.

[0075] The sliding sleeve 16 is located at one end of the frame 15 near the first valve chamber 107 and is slidably connected to the valve stem 3. The linear sliding of the sliding sleeve 16 enables the valve stem 3 to switch quickly, avoiding complex rotation or multi-component linkage. This significantly improves the switching speed and action accuracy of the bullet valve, meets the requirements for rapid response, and improves the overall system efficiency.

[0076] The actuator 4 is fixed to the end of the frame 15 away from the sliding sleeve 16, optimizing the force transmission path. The actuator 4, fixed to the end of the frame 15 away from the sliding sleeve 16, efficiently transmits the driving force to the sliding sleeve 16 and valve stem 3 through the frame 15, reducing energy loss and delay during force transmission. This improves the efficiency of driving force transmission, shortens the response time of the bullet valve, reduces energy consumption, and enhances the reliability and stability of the system.

[0077] like Figure 2 As shown, the valve seat 1 in this embodiment includes an end cover 17, the end cover 17 is provided with a connection terminal 18, and the connection terminal 18 is electrically connected to the driver 4.

[0078] Specifically, the end cap 17, as part of the valve seat 1, closes the connection area between the actuator 4 and the valve seat 1 to prevent external impurities or fluid from entering.

[0079] The connection terminal 18 is directly electrically connected to the driver 4, simplifying the electrical wiring process and avoiding complex wiring operations. This significantly improves the convenience of electrical connections, reduces installation time and error rates, and facilitates later maintenance and replacement of the driver 4.

[0080] like Figure 2 As shown, in this embodiment, the end cap 17 is provided with a retaining edge 171, and the outer wall of the valve seat 1 is provided with a retaining groove 19. The end cap 17 is connected to the retaining groove 19 of the valve seat 1 through the retaining edge 171.

[0081] Specifically, the end cap 17 is connected to the slot 19 of the valve seat 1 via the retaining edge 171, forming an independent modular structure. This facilitates the individual replacement or repair of the end cap 17 without disassembling the entire valve seat 1. This simplifies the maintenance and replacement process, reduces maintenance difficulty and costs, and improves the economy and practicality of the bullet valve.

[0082] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A three-way bullet valve comprising a valve body and a valve core, characterized in that, The valve core includes a valve seat (1), a valve core plug (2), a valve stem (3), and an actuator (4). The valve seat (1) is provided with a first port (101), a second port (102) and a third port (103). The valve core plug (2) is disposed inside the valve seat (1) and is used to control the opening or closing of the first port (101), the second port (102) and the third port (103); The valve stem (3) is connected between the valve core plug (2) and the actuator (4); The actuator (4) drives the valve core plug (2) to move along the inside of the valve seat (1) via the valve stem (3).

2. A three-way bullet valve according to claim 1, characterized in that, The valve seat (1) is provided with a first chamber (104), a second chamber (105), and a third chamber (106) corresponding to the first port (101), the second port (102), and the third port (103), respectively.

3. A three-way bullet valve according to claim 2, characterized in that, The valve core plug (2) includes a first plug body (21) and a second plug body (22), the first plug body (21) and the second plug body (22) are arranged opposite to each other, and the first plug body (21) is used to control the opening and closing between the first chamber (104) and the second chamber (105); The second plug (22) is used to control the connection and disconnection between the second chamber (105) and the third chamber (106).

4. A three-way bullet valve according to claim 3, characterized in that, The first plug (21) and the second plug (22) each include a first fixing part (201), an abutting part (202), an interference part (203), and a second fixing part (204). The valve stem (3) is provided with a first fixing groove (31), a protrusion (32) and a second fixing groove (33). The first fixing part (201) is fixed to the first fixing groove (31), the abutting part (202) and the interference part (203) are both fixed to the protrusion (32), and the second fixing part (204) is fixed to the second fixing groove (33).

5. A three-way bullet valve according to claim 1, characterized in that, The valve stem (3) is provided with a first sealing groove (34) at both ends, and a first sealing ring (35) is provided in the first sealing groove (34). The first sealing ring (35) abuts against the inner wall of the valve seat (1). A return spring (36) is provided at one end of the valve stem (3) near the actuator (4). The return spring (36) abuts against the outer side of the first sealing groove (34) and between the valve seat (1) to reset the valve stem (3).

6. A three-way bullet valve according to claim 1, characterized in that, The valve seat (1) includes a first valve chamber (107) and a second valve chamber (108), wherein the first valve chamber (107) and the second valve chamber (108) are threadedly connected; A sealing sleeve (11) is provided at the threaded connection between the first valve chamber (107) and the second valve chamber (108), and the sealing sleeve (11) is threadedly connected to the first valve chamber (107).

7. A three-way bullet valve according to claim 6, characterized in that, A second sealing groove (12) is provided between the sealing sleeve (11) and the first valve cavity (107), and a second sealing ring (13) is provided in the second sealing groove (12), and the second sealing ring (13) abuts against the first valve cavity (107).

8. A three-way bullet valve according to claim 6, characterized in that, The second valve chamber (108) is provided with an inner sleeve (14), a skeleton (15) and a sliding sleeve (16); The inner sleeve (14) is disposed inside the second valve chamber (108); The skeleton (15) passes through the inner sleeve (14), the sliding sleeve (16) is disposed at one end of the skeleton (15) near the first valve chamber (107), the valve stem (3) is slidably connected to the sliding sleeve (16), and the driver (4) is fixed at one end of the skeleton (15) away from the sliding sleeve (16).

9. A three-way bullet valve according to claim 1, characterized in that, The valve seat (1) includes an end cap (17), the end cap (17) is provided with a connection terminal (18), and the connection terminal (18) is electrically connected to the driver (4).

10. A three-way bullet valve according to claim 9, characterized in that, The end cap (17) is provided with a retaining edge (171), and the outer wall of the valve seat (1) is provided with a retaining groove (19). The end cap (17) is connected to the retaining groove (19) of the valve seat (1) through the retaining edge (171).

Images