Stop valve with pressure relief function

Abstract

The stop valve with the pressure relief function comprises a valve body, a valve cover, a valve clack and a valve rod, a medium channel is formed in the side wall of the valve body, the valve cover is arranged above the middle of the valve body in a penetrating mode, the valve rod is in threaded connection with the interior of the valve cover, the valve clack is further arranged in the medium channel, and the valve clack is arranged in the valve rod. A pressure relief assembly is further arranged at the position, located at the bottom end of the valve rod, of the top end of the valve clack, the pressure relief assembly comprises a buffer seat, and the top face and the bottom face of the buffer seat are fixedly installed with the bottom end of the valve rod and the top face of the valve clack respectively. And a warning rod is slidably arranged on the top surface of the buffer seat, and a reset module is arranged between the warning rod and the inner top surface of the buffer seat, so that the warning rod is reset through the reset module, normal use of the valve body is further guaranteed, and the situation that pressure in the medium channel damages elements in the valve body and influences the service life of the valve body is avoided.

Description

Technical Field

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

[0002] A globe valve is a valve in which the closing member (disc) moves along the centerline of the valve seat, with the disc moving linearly along the centerline of the seat. The opening and closing member of a globe valve is a plug-shaped disc with a flat or conical sealing surface, and the disc moves linearly along the centerline of the fluid. Because the stem of this type of valve has a relatively short opening or closing stroke and provides a highly reliable shutoff function, and because the change in the valve's pantone opening is directly proportional to the disc's travel, it is well-suited for flow regulation.

[0003] Existing stop valves generally do not have a pressure relief function. When the medium pressure in the pipeline is too high and there is no matching pressure relief valve on the pipeline, it is easy to cause damage to the pipeline and valve, and in serious cases, the pipeline is prone to burst. Therefore, a stop valve with a pressure relief function is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide a stop valve with a pressure relief function, by arranging a buffer seat between the valve stem and the valve disc, and a warning rod is slidably arranged inside the buffer seat, and a reset module is also provided between the warning rod and the inner top surface of the buffer seat, so as to relieve the pressure inside the medium channel through the reset module, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A stop valve with a pressure relief function comprises a valve body, a valve cover, a valve disc and a valve stem. A medium passage is provided on the side wall of the valve body. The valve cover is provided through and disposed above the middle portion of the valve body. The valve stem is threadedly connected to the interior of the valve cover. A valve disc is further provided inside the medium passage. The top end of the valve disc is located at the bottom end of the valve stem. A pressure relief assembly is also provided.

[0007] The pressure relief assembly includes a buffer seat, the top and bottom surfaces of which are fixedly mounted to the bottom end of the valve stem and the top surface of the valve disc respectively; a vertical channel is also provided in the middle of the bottom end of the valve disc, and the vertical channel is connected to the buffer seat; a through hole is provided on the side wall of the buffer seat; a warning rod is also slidably provided inside the buffer seat; a reset module for resetting the warning rod is also provided between the warning rod and the inner top surface of the buffer seat.

[0008] Preferably, the reset module includes a compression spring, and the compression spring is respectively arranged between the surface of the bottom end of the warning rod and the inner top surface of the buffer seat.

[0009] Preferably, a sealing gasket is further provided on the bottom surface of the warning rod.

[0010] Preferably, a placement groove is provided in the middle of the valve stem, the outer arc surface of the warning rod is slidably connected to the inner wall of the placement groove, and the top of the warning rod is also linearly connected to a warning light.

[0011] Preferably, the inner wall of the buffer seat is symmetrically provided with limiting grooves, and the inner walls of the limiting grooves are respectively slidably connected to the side walls of the bottom end of the warning rod located inside the limiting grooves.

[0012] Preferably, the surface of the bottom end of the warning rod is respectively provided with a contact head, and the inner top surface of the buffer seat is symmetrically provided with a power supply groove, and the contact head is plugged into the power supply groove.

[0013] Preferably, a valve seat is provided on the inner wall of the medium channel just below the valve disc, a flow hole is provided on the surface of the valve seat, and the inner wall of the flow hole and the bottom surface of the valve disc are sealed and extruded with each other.

[0014] Preferably, a rotating handle is also provided at the top end of the valve stem.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model fixes a buffer seat between the bottom end of the valve stem and the valve disc, and a warning rod is slidably provided on the top surface of the buffer seat, and a reset module is provided between the warning rod and the top surface of the buffer seat, so that the warning rod can be reset by the reset module, thereby further ensuring the normal use of the valve body, avoiding the pressure inside the medium channel from damaging the components inside the valve body, and affecting the service life of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body of the utility model;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the valve stem of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the valve stem of the utility model;

[0021] Figure 5 This is a schematic diagram of the contact head and power supply slot position structure of the utility model.

[0022] In the figure: 1. Valve body; 2. Placement groove; 3. Valve cover; 4. Rotating handle; 5. Valve seat; 6. Valve disc; 7. Vertical channel; 8. Buffer seat; 9. Through hole; 10. Sealing gasket; 11. Warning rod; 12. Compression spring; 13. Valve stem; 14. Warning light; 15. Flow hole; 16. Limiting groove; 17. Contact head; 18. Power supply groove; 19. Medium channel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 5 , the utility model provides a technical solution:

[0025] A stop valve with a pressure relief function includes a valve body 1, a valve cover 3, a valve disc 6, and a valve stem 13. A medium channel 19 is opened on the side wall of the valve body 1. The valve cover 3 is arranged above the middle of the valve body 1. The valve stem 13 is threadedly connected to the inside of the valve cover 3. The valve disc 6 is further arranged inside the medium channel 19. The top end of the valve disc 6 is located at the bottom end of the valve stem 13. A pressure relief assembly is also provided.

[0026] The pressure relief assembly includes a buffer seat 8, the top and bottom surfaces of which are fixedly mounted to the bottom end of the valve stem 13 and the top surface of the valve disc 6 respectively. A vertical channel 7 is also provided in the middle of the bottom end of the valve disc 6, and the vertical channel 7 is connected to the buffer seat 8. A through hole 9 is provided on the side wall of the buffer seat 8. A warning rod 11 is also slidably provided inside the buffer seat 8, and a reset module for resetting the warning rod 11 is also provided between the warning rod 11 and the inner top surface of the buffer seat 8.

[0027] A buffer seat 8 is provided between the valve stem 13 and the valve disc 6, and a warning rod 11 is also slidably provided inside the buffer seat 8. A reset module is also provided between the bottom surface of the warning rod 11 and the inner top surface of the buffer seat 8, so that the pressure inside the medium channel 19 of the side wall of the valve body 1 can squeeze the warning rod 11 above the inner top surface of the buffer seat 8, so as to relieve the pressure inside the medium channel 19 through the vertical channel 7 and the through hole 9. After the pressure relief is completed, the warning rod 11 is reset by the reset module to ensure the normal use of the valve body 1.

[0028] The reset module includes a compression spring 12, which is respectively arranged between the surface of the bottom end of the warning rod 11 and the inner top surface of the buffer seat 8. At the same time, the compression spring 12 is arranged between the bottom end surface of the warning rod 11 and the inner top surface of the buffer seat 8, so that the warning rod 11 is squeezed by the internal pressure of the medium channel 19 to squeeze the compression spring 12, so that the warning rod 11 moves toward the inner top surface of the buffer seat 8, so that the vertical channel 7, the buffer seat 8 and the through hole 9 are interconnected, so as to realize pressure relief inside the medium channel 19.

[0029] A sealing gasket 10 is also provided on the bottom surface of the warning rod 11 , and a sealing gasket 10 is also provided on the bottom surface of the warning rod 11 to ensure the air tightness between the valve stem 13 and the medium channel 19 through the sealing gasket 10 .

[0030] A placement groove 2 is provided in the middle of the valve stem 13 , and the outer arc surface of the warning rod 11 is slidably connected to the inner wall of the placement groove 2 . A warning light 14 is also linearly connected to the top of the warning rod 11 .

[0031] The bottom surface of the warning rod 11 is provided with a contact head 17 , and the inner top surface of the buffer seat 8 is symmetrically provided with a power supply groove 18 , and the contact head 17 is plugged into the power supply groove 18 .

[0032] A placement groove 2 is opened in the middle of the valve stem 13, and the outer arc surface of the warning rod 11 is slidably connected to the inner wall of the placement groove 2, and the top of the warning rod 11 is also linearly connected to the warning light 14, so that the warning rod 11 can rise upward under the pressure squeeze inside the medium channel 19, and then the contact head 17 set on the bottom surface of the warning rod 11 is plugged into the power-on groove 18 to power the warning light 14 and make the warning light 14 light up to remind the user.

[0033] The inner wall of the buffer seat 8 is symmetrically provided with limiting grooves 16 , and the inner walls of the limiting grooves 16 are slidably connected to the side walls of the bottom end of the warning rod 11 located inside the limiting grooves 16 .

[0034] By symmetrically opening a limiting groove 16 on the inner wall of the power-on groove 18, and the inner wall of the limiting groove 16 is also slidably connected to the side wall of the bottom end of the warning rod 11 located inside the limiting groove 16, the warning rod 11 can slide inside the limiting groove 16 to ensure the direction of the warning rod 11 when it is raised or lowered, and increase the stability of the warning rod 11 when it is raised or lowered.

[0035] The inner wall of the medium channel 19 is provided with a valve seat 5 just below the valve disc 6 . A flow hole 15 is opened on the surface of the valve seat 5 . The inner wall of the flow hole 15 and the bottom surface of the valve disc 6 are sealed and squeezed with each other.

[0036] A valve seat 5 is provided on the inner wall of the medium channel 19 directly below the valve disc 6, and a flow hole 15 is opened on the surface of the valve seat 5. The inner wall of the flow hole 15 and the bottom surface of the valve disc 6 are sealed and squeezed with each other to ensure the air tightness inside the medium channel 19 through the valve disc 6.

[0037] The top end of the valve stem 13 is also provided with a rotating handle 4.

[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A stop valve with a pressure relief function, comprising a valve body (1), a valve cover (3), a valve disc (6) and a valve stem (13), characterized in that: The side wall of the valve body (1) is provided with a medium passage (19), the valve cover (3) is provided through the middle portion of the valve body (1), the valve stem (13) is threadedly connected to the inside of the valve cover (3), a valve flap (6) is provided inside the medium passage (19), and a pressure relief assembly is provided at the top end of the valve flap (6) and the bottom end of the valve stem (13); The pressure relief assembly includes a buffer seat (8), the top surface and bottom surface of the buffer seat (8) are fixedly mounted to the bottom end of the valve stem (13) and the top surface of the valve flap (6) respectively, a vertical channel (7) is further provided in the middle of the bottom end of the valve flap (6), the vertical channel (7) and the buffer seat (8) are connected, a through hole (9) is provided on the side wall of the buffer seat (8), a warning rod (11) is further slidably provided inside the buffer seat (8), and a reset module for resetting the warning rod (11) is further provided between the warning rod (11) and the inner top surface of the buffer seat (8).

2. A stop valve with a pressure relief function according to claim 1, characterized in that: The reset module comprises a compression spring (12), and the compression spring (12) is respectively arranged between the surface of the bottom end of the warning rod (11) and the inner top surface of the buffer seat (8).

3. A stop valve with a pressure relief function according to claim 2, characterized in that: A sealing pad (10) is also provided on the bottom surface of the warning rod (11).

4. A stop valve with a pressure relief function according to claim 3, characterized in that: A placement groove (2) is provided in the middle of the valve stem (13), the outer arc surface of the warning rod (11) is slidably connected to the inner wall of the placement groove (2), and the top of the warning rod (11) is also linearly connected to a warning light (14).

5. The stop valve with pressure relief function according to claim 4, characterized in that: The inner wall of the buffer seat (8) is also symmetrically provided with a limiting groove (16), and the inner wall of the limiting groove (16) is also slidably connected to the side wall of the bottom end of the warning rod (11) located inside the limiting groove (16).

6. The stop valve with pressure relief function according to claim 5, characterized in that: The bottom surface of the warning rod (11) is respectively provided with a contact head (17), and the inner top surface of the buffer seat (8) is symmetrically provided with a power supply groove (18), and the contact head (17) is plugged into the power supply groove (18).

7. The stop valve with pressure relief function according to claim 1, characterized in that: The inner wall of the medium channel (19) is provided with a valve seat (5) just below the valve disc (6), and a flow hole (15) is provided on the surface of the valve seat (5). The inner wall of the flow hole (15) and the bottom surface of the valve disc (6) are sealed and extruded with each other.

8. The stop valve with pressure relief function according to claim 7, characterized in that: The top end of the valve stem (13) is also provided with a rotating handle (4).

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