Ball valve with bidirectional pressure relief function

Abstract

The ball valve with the two-way pressure relief function comprises a valve body, an inlet pressure relief one-way valve, an outlet pressure relief one-way valve and a filter element, the valve body comprises a valve rod, an inlet pipe connector and an outlet pipe connector, a positioning base is arranged in the middle of the inlet pipe connector, the filter element is connected into the positioning base, and the valve rod is connected with the valve rod. The filter element is used for filtering passing fluid. According to the utility model, the filter element is arranged to filter particle impurities in fuel oil passing in and out, so that the impurities are prevented from being accumulated in a valve body channel to cause subsequent blockage and influence the use safety of equipment, and the movable block moves in the built-in block and is matched with the guide effect that the guide block slides along the guide groove, so that the service life of the equipment is prolonged. The adjusting device can be used for adjusting the inserting state of the fixing inserting rod and the fixing inserting groove, the positioning base and the filter element can be conveniently and integrally disassembled and assembled, and follow-up cleaning and replacing work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve with a bidirectional pressure relief function. Background Art

[0002] Currently, ball valves in aircraft fuel systems, as components that enable fuel flow through pipelines, have a relatively simple function. Temperature fluctuations in aircraft fuel system pipelines often necessitate the installation of thermal pressure relief devices to prevent excessive pressure from building up within the enclosed fuel pipeline space when the valve is closed. In system architectures, some pipelines on both the inlet and outlet sides of ball valves require pressure relief.

[0003] Traditional thermal pressure relief equipment lacks filtering devices. The direct passage of fuel will affect the safety of subsequent fuel, and the entry of impurities will cause blockage of internal channels, affecting safety of use.

[0004] Secondly, installing multiple thermal pressure relief devices on the pipeline will increase the types and number of system equipment, and will also make the system architecture more complex, which urgently needs to be developed. Utility Model Content

[0005] The purpose of the present utility model is to provide a ball valve with a bidirectional pressure relief function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a ball valve with a two-way pressure relief function, comprising a valve body, an inlet pressure relief check valve, an outlet pressure relief check valve, and a filter element; the valve body comprises a valve stem, an inlet pipe joint, and an outlet pipe joint; a positioning base is provided in the middle of the inlet pipe joint, and a filter element is connected to the interior of the positioning base, and the filter element is used to filter the fluid passing therethrough;

[0007] The bottom of the inlet pipe joint is connected to a positioning groove seat that matches the bottom of the positioning base, and the positioning groove seat plays a positioning role for the bottom of the positioning base;

[0008] The top of the positioning base extends into the top of the inlet pipe joint, and the top of the inlet pipe joint is symmetrically connected to a built-in block, and the two built-in blocks are symmetrically arranged relative to the two sides of the positioning base. The interior of the built-in block is connected to a movable block through a spring, and the top of the movable block extends to the outside of the top of the built-in block. The front and rear sides of the movable block are connected to guide blocks, and the front and rear sides of the built-in block are connected to guide grooves matching the guide blocks. The guide blocks slide along the guide grooves to limit the auxiliary movable block to stably move in the built-in block.

[0009] One side of the movable block is connected with a fixed rod, both sides of the top of the positioning base are connected with fixed slots matching the fixed rod, and the top of the positioning base is connected with a handle.

[0010] Preferably, the inlet pressure relief one-way valve is fixed on the inlet side end face of the valve body, and an inlet pressure relief channel is provided on the valve body, which connects the inlet side of the valve body with the inlet pressure relief one-way valve.

[0011] Preferably, the outlet pressure relief one-way valve is fixed on the inlet side end face of the valve body, and a connecting outlet pressure relief channel is provided on the valve body and the valve seat, and the outlet pressure relief channel connects the outlet side of the valve body and the outlet pressure relief one-way valve.

[0012] Preferably, a spherical valve core is provided between the inlet pipe joint and the outlet pipe joint, the spherical valve core is connected to the middle of the valve stem, the top of the valve stem extends to the top of the valve body and is connected to the valve cover.

[0013] Preferably, a first gasket ring is sleeved on the connection between the valve cover and the valve stem, and a second gasket ring is sleeved on the connection between the valve stem and the valve body.

[0014] Preferably, the bottom of the valve stem is assembled and connected to the bottom of the valve body through a positioning connection seat.

[0015] Preferably, a sealing ring and an adjusting gasket are provided at the connection between the outlet pipe joint and one side of the valve body. The adjusting gasket is connected between the sealing ring and the outlet pipe joint. The outlet pipe joint is assembled and connected to the valve body through a mounting flange.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) This type of ball valve with a two-way pressure relief function filters particulate impurities in the fuel passing in and out by setting a filter element, avoiding the accumulation of impurities in the valve body channel causing subsequent blockage and affecting the safety of equipment use. The movable block moves in the built-in block and cooperates with the guiding function of the guide block sliding along the guide groove to adjust the plug-in state of the fixed plug rod and the fixed slot, making it convenient to disassemble and assemble the positioning base and the filter element as a whole, so as to facilitate subsequent cleaning and replacement work;

[0018] (2) This type of ball valve with a two-way pressure relief function is provided with an inlet pressure relief check valve and an outlet pressure relief check valve on the valve body. When the ball valve core is in the closed position, if the pressure at the inlet of the ball valve core is too high, the high-pressure fuel is released into the corresponding fuel tank through the inlet pressure relief check valve. If the pressure at the outlet of the ball valve core is too high, the high-pressure fuel is released into the corresponding fuel tank through the outlet pressure relief check valve. This effectively reduces the types and number of devices in the system, reduces the complexity of the system architecture, and is simple to operate and easy to use.

[0019] (3) This type of ball valve with a two-way pressure relief function has a first gasket ring between the contact surfaces of the valve stem and the valve cover, and a second gasket ring between the contact surfaces of the valve stem and the valve body. The coordinated use of the first gasket ring and the second gasket ring can reduce the friction torque between the valve stem and the valve body and the valve cover, thereby extending the service life. The setting of the sealing ring and the adjusting gasket can strengthen the sealing between the outlet pipe joint and the valve seat, and improve the stability of the alignment of the spherical valve core and the outlet pipe joint, thereby improving the stability of liquid flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A in the middle is an enlarged structural diagram;

[0022] Figure 3 This is a top view of the structure of the connection between the inlet pipe joint, the positioning base and the built-in block of the utility model;

[0023] Figure 4 This is a side view of the structure of the utility model;

[0024] Figure 5 This is a side view structural diagram of the connection between the valve seat, adjustment gasket and sealing ring and the outlet pipe joint of the utility model.

[0025] In the figure: 1. Valve body; 2. Valve cover; 3. Valve stem; 4. First gasket ring; 5. Second gasket ring; 6. Inlet pipe joint; 7. Positioning groove seat; 8. Positioning base; 9. Positioning connecting seat; 10. Spherical valve core; 11. Sealing ring; 12. Mounting flange; 13. Outlet pipe joint; 14. Valve seat; 15. Adjusting gasket; 16. Movable block; 17. Guide groove; 18. Built-in block; 19. Spring; 20. Guide block; 21. Filter element; 22. Fixed plug rod; 23. Fixed slot; 24. Lifting handle; 25. Inlet pressure relief check valve valve; 26. Outlet pressure relief check valve valve. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-5The utility model provides an embodiment of a ball valve with a two-way pressure relief function, comprising a valve body 1, an inlet pressure relief check valve valve 25, an outlet pressure relief check valve valve 26 and a filter element 21. The valve body 1 comprises a valve stem 3, an inlet pipe joint 6 and an outlet pipe joint 13. A positioning base 8 is provided in the middle of the inlet pipe joint 6. The interior of the positioning base 8 is connected to a filter element 21. The filter element 21 is provided to filter particulate impurities in the fuel passing in and out, thereby preventing impurities from accumulating in the valve body channel and causing subsequent blockage, which affects the safety of the equipment.

[0028] The bottom of the inlet pipe joint 6 is connected with a positioning groove seat 7 that matches the bottom of the positioning base 8. The top of the positioning base 8 extends into the top of the inlet pipe joint 6. The top of the inlet pipe joint 6 is symmetrically connected with a built-in block 18. The two built-in blocks 18 are symmetrically arranged on both sides of the positioning base 8. The inside of the built-in block 18 is connected with a movable block 16 through a spring 19. The top of the movable block 16 extends to the outside of the top of the built-in block 18. The front and rear sides of the movable block 16 are connected with a guide block 20. The front and rear sides of the built-in block 18 are connected with a guide groove 17 that matches the guide block 20. The movable block 16 moves in the built-in block 18 and cooperates with the guide block 20 to slide along the guide groove 17. The guiding effect can be used to adjust the plug-in state of the fixed plug rod 22 and the fixed slot 23, which facilitates the disassembly and assembly of the positioning base 8 and the filter element 21 as a whole, so as to facilitate subsequent cleaning and replacement work;

[0029] One side of the movable block 16 is connected to a fixed rod 22 , both sides of the top of the positioning base 8 are connected to fixed slots 23 that match the fixed rod 22 , and the top of the positioning base 8 is connected to a handle 24 .

[0030] An inlet pressure relief check valve 25 is fixed to the inlet end face of the valve body 1. An inlet pressure relief passage is defined in the valve body 1, connecting the inlet side of the valve body 1 with the inlet pressure relief check valve 25. An outlet pressure relief check valve 26 is fixed to the inlet end face of the valve body 1. An outlet pressure relief passage is defined in the valve body 1 and communicates with the valve seat 14, connecting the outlet side of the valve body 1 with the outlet pressure relief check valve 26. The inlet pressure relief check valve 25 and the outlet pressure relief check valve 26 are provided on the valve body 1. When the spherical valve core 10 is in the closed position, if the pressure at the inlet of the spherical valve core 10 is too high, the high-pressure fuel is released into the corresponding fuel tank through the inlet pressure relief check valve 25.

[0031] If the pressure at the outlet of the spherical valve core 10 is too high, the high-pressure fuel is released into the corresponding fuel tank through the outlet pressure relief one-way valve valve 26, thereby effectively reducing the types and quantity of equipment in the system, reducing the complexity of the system architecture, and making the operation simple and easy to use.

[0032] A spherical valve core 10 is provided between the inlet pipe joint 6 and the outlet pipe joint 13 . The spherical valve core 10 is connected to the middle of the valve stem 3 . The top of the valve stem 3 extends to the top of the valve body 1 and is connected to the valve cover 2 .

[0033] A first gasket ring 4 is sleeved at the connection between the valve cover 2 and the valve stem 3. The first gasket ring 4 is padded between the contact surfaces of the valve stem 3 and the valve cover 2, and a second gasket ring 5 is padded between the contact surfaces of the valve stem 3 and the valve body 1. The coordinated use of the first gasket ring 4 and the second gasket ring 5 can reduce the friction torque between the valve stem 3 and the valve body 1 and the valve cover 2, thereby extending the service life;

[0034] A second gasket ring 5 is sleeved on the connection between the valve stem 3 and the valve body 1 .

[0035] The bottom of the valve stem 3 is assembled and connected to the bottom of the valve body 1 through a positioning connection seat 9.

[0036] The connection between the outlet pipe joint 13 and one side of the valve body 1 is provided with a sealing ring 11 and an adjusting gasket 15. The provision of the sealing ring 11 and the adjusting gasket 15 can strengthen the sealing between the outlet pipe joint 13 and the valve seat 14, and improve the stability of the alignment of the spherical valve core 10 and the outlet pipe joint 13, thereby improving the stability of liquid flow;

[0037] The adjusting gasket 15 is connected between the sealing ring 11 and the outlet pipe joint 13 , and the outlet pipe joint 13 is assembled and connected to the valve body 1 through the mounting flange 12 .

[0038] When the embodiment of the present application is in use: the setting of the filter element 21 is used to filter particulate impurities in the fuel passing in and out, to prevent impurities from accumulating in the valve body channel and causing subsequent blockage, affecting the safety of equipment use, and an inlet pressure relief check valve valve 25 and an outlet pressure relief check valve valve 26 are provided on the valve body 1. When the spherical valve core 10 is in a closed position, if the pressure at the inlet of the spherical valve core 10 is too high, the high-pressure fuel is released into the corresponding fuel tank through the inlet pressure relief check valve valve 25. If the pressure at the outlet of the spherical valve core 10 is too high, the high-pressure fuel is released into the corresponding fuel tank through the outlet pressure relief check valve valve 26, thereby effectively reducing the types and quantities of equipment in the system.

Claims

1. A ball valve with a two-way pressure relief function, characterized in that: The invention comprises a valve body (1), an inlet pressure relief check valve (25), an outlet pressure relief check valve (26) and a filter element (21), wherein the valve body (1) comprises a valve stem (3), an inlet pipe joint (6) and an outlet pipe joint (13), a positioning base (8) is provided in the middle of the inlet pipe joint (6), the interior of the positioning base (8) is connected with a filter element (21), the bottom of the inlet pipe joint (6) is connected with a positioning groove seat (7) matching the bottom of the positioning base (8), the top of the positioning base (8) extends to the top of the inlet pipe joint (6), the top of the inlet pipe joint (6) is symmetrically connected with built-in blocks (18), and the two built-in blocks (18) are connected to each other. ) are symmetrically arranged on both sides relative to the positioning base (8), the interior of the built-in block (18) is connected to the movable block (16) through a spring (19), the top of the movable block (16) extends to the outside of the top of the built-in block (18), the front and rear sides of the movable block (16) are connected to the guide block (20), the front and rear sides of the built-in block (18) are connected to the guide groove (17) matching the guide block (20), one side of the movable block (16) is connected to the fixed plug rod (22), both sides of the top of the positioning base (8) are connected to the fixed slot (23) matching the fixed plug rod (22), and the top of the positioning base (8) is connected to the handle (24).

2. A ball valve with a bidirectional pressure relief function according to claim 1, characterized in that: The inlet pressure relief one-way valve (25) is fixed on the inlet side end face of the valve body (1), and an inlet pressure relief channel is provided on the valve body (1), and the inlet pressure relief channel connects the inlet side of the valve body (1) and the inlet pressure relief one-way valve (25).

3. The ball valve with bidirectional pressure relief function according to claim 1, characterized in that: The outlet pressure relief check valve (26) is fixed on the inlet side end face of the valve body (1), and a communicating outlet pressure relief passage is provided on the valve body (1) and the valve seat (14), and the outlet pressure relief passage communicates the outlet side of the valve body (1) and the outlet pressure relief check valve (26).

4. The ball valve with bidirectional pressure relief function according to claim 1, characterized in that: A spherical valve core (10) is provided between the inlet pipe joint (6) and the outlet pipe joint (13), the spherical valve core (10) being connected to the middle portion of the valve stem (3), the top portion of the valve stem (3) extending to the outside of the top portion of the valve body (1) and being connected to the valve cover (2).

5. The ball valve with bidirectional pressure relief function according to claim 4, characterized in that: A first gasket ring (4) is sleeved on the connection between the valve cover (2) and the valve stem (3), and a second gasket ring (5) is sleeved on the connection between the valve stem (3) and the valve body (1).

6. The ball valve with bidirectional pressure relief function according to claim 5, characterized in that: The bottom of the valve stem (3) is assembled and connected to the bottom of the valve body (1) via a positioning connection seat (9).

7. The ball valve with bidirectional pressure relief function according to claim 4, characterized in that: A sealing ring (11) and an adjusting gasket (15) are provided at the connection between the outlet pipe joint (13) and one side of the valve body (1). The adjusting gasket (15) is connected between the sealing ring (11) and the outlet pipe joint (13). The outlet pipe joint (13) is assembled and connected to the valve body (1) via a mounting flange (12).

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