CN213575763U - Engine pressure-stabilizing flat overflow valve - Google Patents

Abstract

The utility model relates to a combination valve field especially improves voltage stabilization plate overflow valve of reliability that the engine started, including surge damping valve, wafer valve and overflow valve, the top of wafer valve is connected with surge damping valve to the bottom of wafer valve is connected with the overflow valve, the inner chamber of surge damping valve, wafer valve and overflow valve is provided with first runner respectively. When the pressure stabilizing plate overflow valve for the engine is used, firstly, a valve body of the pressure stabilizing valve is in butt joint with a fuel outlet of the engine through a first threaded ring connector, a medium enters the first flow channel, the medium flows into the second flow channel, when a hand wheel moves anticlockwise, a gate plate moves leftwards, the second flow channel is dredged to be fully open, when the medium flows into the third flow channel, the medium pushes a valve clack downwards, the valve clack is driven to move downwards through a shaft chain, the third flow channel is dredged, and the medium flows out of a fourth threaded ring.

Description

Engine pressure-stabilizing flat overflow valve

Technical Field

The utility model relates to a combination valve technical field specifically is engine steady voltage flat overflow valve.

Background

As is well known, in an engine, a valve is a member for opening and closing an intake port and an exhaust port of a combustion chamber of the engine, the intake valve sucks air required for combustion into the combustion chamber, the exhaust valve discharges gas combusted by compression explosion in the combustion chamber to the outside of the combustion chamber, a ball valve is turned to an open state before the engine is started, and the ball valve is closed after the engine is started, thereby increasing workload for routine maintenance and relatively increasing investment and operating costs.

Through the retrieval, chinese patent application number is CN 201720125724.8's utility model patent discloses a surge damping valve, and it is including the valve body that has import and export, and the valve body upper end is provided with the valve gap, is provided with the diaphragm between valve body and the valve gap, be provided with the cavity between diaphragm and the surge damping disk seat, this kind of surge damping valve exists following not enough.

The combined valve is a fixing device, the valve body cannot be adjusted, the pressure stabilizing effect of the valve body is poor, the structure is simple, and the use functionality is single.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an engine steady voltage plate overflow valve, the medium passes through arbor wheel gliding extrusion spring and the valve clack drives sealed the pad gliding downwards to the valve clack, the spring atress moves down, the reverse atress of spring promotes the valve clack simultaneously, it produces frictional force to drive sealed pad gliding from top to bottom, carry out the pressure regulating through rotatory pressure regulating hand wheel, set for minimum pressure value, the stable effect of constant voltage has been played, the function of the limiting system superpressure has also been played simultaneously, and steady voltage plate overflow valve body is inside all to be provided with the fillet of screw, this steady voltage plate overflow valve has realized the steady voltage effect, the decompression steady voltage effect is stable, the structure is comparatively abundant, convenient equipment is disassembled, the.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a pressure stabilizing flat overflow valve for an engine comprises a flat valve, wherein the top end of the flat valve is connected with a pressure stabilizing valve, the bottom end of the flat valve is connected with an overflow valve, inner cavities of the pressure stabilizing valve, the flat valve and the overflow valve are respectively provided with a first flow passage, a second flow passage and a third flow passage, a valve clack, a spring and a spring seat are arranged in the first flow passage, a gate plate, a main valve seat and a main valve rod are arranged in the second flow passage, a cone valve rod, a cone valve clack and a cone valve core are arranged in the third flow passage, the first flow passage, the second flow passage and the third flow passage are communicated, the pressure stabilizing valve comprises a pressure stabilizing valve body, a first threaded ring, a supporting plate, a shaft wheel and a sealing gasket, a first threaded ring is arranged on the inner wall of the top end of the pressure stabilizing valve body, the supporting plate is arranged on the left side of the inner wall of, the insert groove of the inner wall of the left side of the pressure stabilizing valve body is connected with the insert piece of the left side of the support plate in an inserting manner, a spring seat is stacked above the support plate, the support plate is connected with the spring seat in a sticking manner, a spring is stacked above the spring seat and is connected with the spring seat in a sticking manner, a valve clack is arranged above the spring, a shaft wheel is connected with the left side of the inner wall of the pressure stabilizing valve body and is respectively connected with the inner wall of the pressure stabilizing valve body and the valve clack in a shaft manner, a sealing gasket is arranged on the inner wall of the right side of the pressure stabilizing valve body and is connected with the valve clack in a sticking manner, a U-shaped groove is arranged on the circumferential inner wall of the pressure stabilizing valve body, a gap is reserved between the, the flat valve comprises a flat valve body, a second thread ring, a third thread ring, a rolling bearing, a bearing ring, a shaft neck, a shaft body, a handle, a valve frame, valve rod packing and a baffle plate, wherein the second thread ring is arranged at the top end inside the flat valve body, the pressure stabilizing valve body is in threaded connection with the top end of the flat valve body, the handle is arranged outside the right side of the flat valve body, a main valve rod transversely penetrates through the right side of the flat valve body, the right side port of the main valve rod is welded with the left side port of the handle, the baffle plate is arranged between the outside of the right side valve wall of the flat valve body and the handle and is in threaded connection with the outside of the flat valve body through a bolt, the valve rod packing is installed on the right side inside the flat valve body, the valve rod packing is welded with the inside of the flat valve body, the left side of the valve rod, a shaft neck is installed on a valve rod inside the flat valve body, the right side of the shaft neck is connected with the flat valve body, the left side of the shaft neck is connected with a shaft body, the shaft neck is welded with the shaft body and the flat valve body, a rolling bearing is installed between the valve frame and the valve rod and is welded with the valve frame, the rolling bearing is connected with the shaft neck in a fit mode through a shaft bead, the body of the main valve rod is provided with the shaft body, the outer layer of the body of the main valve rod is surrounded with the shaft body, the left side port of the main valve rod is provided with a main valve seat, the right side of the main valve seat is provided with a hole groove which is meshed with the left side port of the main valve rod, the main valve rod is meshed with the hole groove of the main valve seat, the left side port of the shaft body is provided with a, the flashboard is welded with the outer side ring body of the bearing ring, the overflow valve comprises a fourth threaded ring, a shaft chain, a pressure regulating hand wheel, a fourth internal thread, a fifth external thread, a hand wheel ring and an overflow valve body, the third threaded ring is arranged at the bottom end inside the flat valve body, a second external thread is arranged at the top end outside the overflow valve body, the overflow valve body is in threaded connection with the third threaded ring of the flat valve body, the fourth threaded ring is arranged on the left side of the overflow valve body, a second round hole is arranged on the left side of the overflow valve body, the outer side ring body of the fourth threaded ring is welded with the second round hole on the left side of the overflow valve body, the pressure regulating hand wheel is installed at the bottom end outside the overflow valve body, the top end of the pressure regulating hand wheel is connected with a cone valve rod, the pressure regulating hand wheel is welded with, and the circumference inner wall of hand rim is provided with the internal thread, the rotatory spiro union of third external screw thread and hand rim, the inside bottom of overflow valve body is provided with the fourth internal thread to the inside outside of pressure regulating hand wheel is provided with the fifth external screw thread, and pressure regulating hand wheel and overflow valve body swivelling joint, the awl valve rod top is provided with the cone valve core to the cone valve core is perpendicular to be folded and is fallen in the cone valve rod top, the cone valve core top is provided with the awl valve clack, the cone valve clack bottom is provided with a arch and the cone valve core top is provided with the recess, the groove toothing of awl valve cla.

Preferably, the circumferential surface of the pressure regulating hand wheel is provided with a pressure value.

Preferably, the shutter is a hollow cylindrical metal cone.

Preferably, the sealing gasket is made of high-density rubber.

Preferably, the valve frame is hinged with the valve stem packing through a hinge.

Preferably, the shaft chain is arranged on the right side of the cone valve flap, the shaft chain is in rotary threaded connection with the cone valve flap through screws, and the shaft chain is attached to the inner wall of the overflow valve body.

(III) advantageous effects

Compared with the prior art, the utility model provides an engine steady voltage flat overflow valve possesses following beneficial effect:

this engine steady voltage flat overflow valve, surge damping valve spiro union are at wafer valve top end port, and the overflow valve spiro union is at wafer valve bottom end port, and the valve body passes through the nut interface and docks with engine fuel outlet, and the device is easily flow control, and convenient equipment is disassembled, and steady voltage overflow response during the use is timely, has strengthened the gas tightness, and holistic leakproofness is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a portion of the enlarged structure of FIG. 1;

FIG. 3 is a schematic structural view of the present invention;

fig. 4 is a schematic structural diagram of the present invention.

In the figure: 1. a one-way valve body; 2. a support plate; 3. a spring seat; 4. a spring; 5. a valve flap; 6. a shaft wheel; 7. a gasket; 8. a first thread turn; 9. a flat valve body; 10. a shutter plate; 11. a main valve stem; 12. A main valve seat; 13. a shaft body; 14. a baffle plate; 15. a rolling bearing; 16. a journal; 17. a second thread turn; 18. a bearing ring; 19. a third thread turn; 20. valve stem packing; 21. a valve frame; 22. a handle; 23. a fourth thread turn; 24. a hand rim; 25. an overflow valve body; 26. a cone valve flap; 27. a shaft chain; 28. a cone valve core; 29. a tapered valve stem; 30. pressure regulating handwheel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Examples

Referring to fig. 1-4, a pressure-stabilizing flat overflow valve for an engine comprises a flat valve, a pressure-stabilizing valve is connected to the top end of the flat valve, an overflow valve is connected to the bottom end of the flat valve, a first flow passage, a second flow passage and a third flow passage are respectively arranged in the inner cavities of the pressure-stabilizing valve, the flat valve and the overflow valve, a valve flap 5, a spring 4 and a spring seat 3 are arranged in the first flow passage, a gate plate 10, a main valve seat 12 and a main valve rod 11 are arranged in the second flow passage, a cone valve rod 29, a cone valve flap 26 and a cone valve core 28 are arranged in the third flow passage, the first flow passage, the second flow passage and the third flow passage are communicated, the pressure-stabilizing valve comprises a pressure-stabilizing valve body, a first thread ring 8, a support plate 2, a shaft wheel 6 and a seal gasket 7, a first thread ring 8 is arranged on the circumferential inner wall of the top, an inserting sheet is arranged at a left side port of a supporting plate 2, an inserting groove is arranged on the left side inner wall of a pressure stabilizing valve body, the inserting groove on the left side inner wall of the pressure stabilizing valve body is connected with the inserting sheet on the left side of the supporting plate 2 in an inserting manner, a spring seat 3 is stacked above the supporting plate 2, the supporting plate 2 is connected with the spring seat 3 in a sticking manner, a spring 4 is stacked above the spring seat 3, the spring 4 is connected with the spring seat 3 in a sticking manner, a valve clack 5 is arranged above the spring 4, the valve clack 5 and the left side of the inner wall of the pressure stabilizing valve body are connected with a shaft wheel 6, the shaft wheel 6 is respectively connected with the inner wall of the pressure stabilizing valve body and the valve clack 5 in a shaft manner, a sealing gasket 7 is arranged on the right side inner wall of the pressure stabilizing valve body, the valve cla, and a gap is left between the U-shaped groove and the right side of the valve clack 5, a first external thread is arranged on the lower side of the outside of the pressure maintaining valve body, the flat valve comprises a flat valve body 9, a second thread ring 17 is arranged on the top end of the inside of the flat valve body 9, the pressure maintaining valve body is in threaded connection with the top end of the flat valve body 9, the flat valve comprises a flat valve body 9, a second thread ring 17, a third thread ring 19, a rolling bearing 15, a bearing ring 18, a shaft journal 16, a shaft body 13, a handle 22, a valve frame 21, a valve rod packing 20 and a baffle plate 14, a handle 22 is arranged on the outside of the right side of the flat valve body 9, the main valve rod 11 transversely penetrates through the right side of the flat valve body 9, a right side port of the main valve rod 11 is welded with a left port of the handle 22, a baffle plate 14 is arranged between the outside of the right side valve wall of the flat valve, a valve rod packing 20 is installed on the right side inside the flat valve body 9, the valve rod packing 20 is welded with the inside of the flat valve body 9, the left side of the valve rod packing 20 is connected with a valve frame 21, the valve frame 21 is in bolt connection with the valve rod packing 20, a shaft neck 16 is installed on a valve rod inside the flat valve body 9, the right side of the shaft neck 16 is connected with the flat valve body 9, the left side of the shaft neck 16 is connected with a shaft body 13, the shaft neck 16 is welded with the flat valve body 9, a rolling bearing 15 is installed between the valve frame 21 and the valve rod, the rolling bearing 15 is welded with the valve frame 21, the rolling bearing 15 is in fit connection with the shaft neck 16 through a shaft bead, the body of the main valve rod 11 is provided with the shaft body 13, the outer layer of the body of the main valve rod 11 is surrounded with the shaft body 13, the left side port of the main valve rod 11 is provided with a main, the main valve rod 11 is meshed with a hole groove of the main valve seat 12, a bearing ring 18 is installed at a port on the left side of the shaft body 13, the bearing ring 18 is rotatably connected with the shaft body 13, the gate plate 10 is installed on the bearing ring 18, a first round hole with the diameter being the same as that of the bearing ring 18 is formed in the right side of the gate plate 10, the gate plate 10 is welded with an outer ring body of the bearing ring 18, the overflow valve comprises a fourth threaded ring 23, a shaft chain 27, a pressure regulating hand wheel 30, a fourth internal thread, a fifth external thread, a hand wheel ring 24 and an overflow valve body 25, the third threaded ring 19 is arranged at the bottom end inside the flat valve body 9, a second external thread is arranged at the top end of the outside of the overflow valve body 25, the overflow valve body 25 is in threaded connection with the third threaded ring 19 of the flat valve body 9, the fourth threaded ring 23 is, the outer ring body of the fourth threaded ring 23 is welded with the second round hole on the left side of the overflow valve body 25, the pressure regulating hand wheel 30 is installed at the bottom end of the outer portion of the overflow valve body 25, the top end of the pressure regulating hand wheel 30 is connected with a taper valve rod 29, the pressure regulating hand wheel 30 is welded with the taper valve rod 29, the bottom end of the outer portion of the overflow valve body 25 is provided with a third external thread, the bottom end of the outer portion of the overflow valve body 25 is provided with a hand wheel ring 24, the inner wall of the circumference of the hand wheel ring 24 is provided with an internal thread, the third external thread is in rotary threaded connection with the hand wheel ring 24, the bottom end of the inner portion of the overflow valve body 25 is provided with a fourth internal thread, the outer side of the pressure regulating hand wheel 30 is provided with a fifth external thread, the pressure regulating hand wheel 30 is in rotary, the bottom end of the cone valve flap 26 is provided with a bulge, the top end of the cone valve element 28 is provided with a groove, the cone valve flap 26 is meshed with the groove of the cone valve element 28, a pressure stabilizing valve body is butted with a fuel outlet of an engine through a first threaded ring 8 connector, a medium applies force downwards to the valve flap 5, the valve flap 5 slides downwards through a shaft wheel 6 to extrude a spring 4, the valve flap 5 drives a sealing gasket 7 to slide downwards, the spring 4 is stressed downwards, the spring 4 is reversely stressed to push the valve flap 5 to drive the sealing gasket 7 to slide upwards and downwards to generate friction force, the pressure stabilizing effect is realized, the pressure regulating hand wheel 30 is provided with pressure numerical values on the circumferential surface to facilitate accurate observation of the pressure numerical values, the flashboard 10 is a hollow cylindrical metal cone, the metal weight can be reduced, the transmission torque acting on the flashboard 10 is reduced, the sealing gasket 7 is, the valve frame 21 is hinged with the valve rod packing 20 through a hinge, the connection strength between the valve frame 21 and the valve rod packing 20 is further enhanced, the right side of the cone valve clack 26 is provided with a shaft chain 27, the shaft chain 27 is in rotary threaded connection with the cone valve clack 26 through screws, the shaft chain 27 is in fit connection with the inner wall of the overflow valve body 25, when a medium flows into a second flow passage, a shaft neck 16 rotates to drive a rolling bearing 15 to move anticlockwise, a bearing ring 18 moves rightwards, the bearing ring 18 is connected with the flashboard 10 and drives the flashboard 10 to move rightwards, when the medium reaches a limit position, the second flow passage is in a stop sealing state, the effects of cleaning an inner valve body and overflowing of the flat valve are achieved, when the medium flows into a third flow passage, the pressure is adjusted through a rotary pressure adjusting hand wheel 30, the lowest pressure value is set, when the medium pressure is greater than the set lowest, the medium pushes the valve clack 5 downwards, the valve clack 5 is driven to move downwards through the shaft chain 27, the third flow channel is dredged, and the medium flows out of the fourth threaded ring 23, so that the constant-pressure stabilizing effect is achieved, and the function of limiting the overpressure of the system is achieved.

In summary, the working principle and the working process of the pressure-stabilizing flat overflow valve for the engine are that, when the pressure-stabilizing flat overflow valve is used, firstly, a pressure-stabilizing valve body is in butt joint with a fuel outlet of the engine through a first threaded ring 8 interface, a medium enters a first flow passage, and applies a force downwards to a valve clack 5, the valve clack 5 slides downwards through a shaft wheel 6 to extrude a spring 4, the valve clack 5 drives a sealing gasket 7 to slide downwards, when the sealing gasket 7 slides downwards to a U-shaped groove position, the inside of the first flow passage is in a dredging state, the medium flows into a second flow passage, a main valve rod 11 in the second flow passage drives a hand wheel journal 16 to rotate through clockwise rotation, a rolling bearing 15 is driven to move anticlockwise through the rotation of the journal 16, meanwhile, a bearing ring 18 connected with a left port of the main valve rod 11 moves clockwise, the bearing ring 18 moves rightwards, when the medium flows into the third flow channel, the pressure is adjusted by rotating the pressure adjusting hand wheel 30, the lowest pressure value is set, when the medium pressure is greater than the set lowest pressure value, the medium pushes the valve clack 5 downwards, the valve clack 5 is driven to move downwards through the shaft chain 27, the third flow channel is dredged, and the medium flows out of the fourth threaded ring 23.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an engine steady voltage flat overflow valve, includes the wafer valve, and the top of wafer valve is connected with the surge damping valve to the bottom of wafer valve is connected with overflow valve, its characterized in that: the inner cavities of the pressure stabilizing valve, the flat valve and the overflow valve are respectively provided with a first flow passage, a second flow passage and a third flow passage, the first flow passage is internally provided with a valve clack (5), a spring (4) and a spring seat (3), the second flow passage is internally provided with a flashboard (10), a main valve seat (12) and a main valve rod (11), the third flow passage is internally provided with a cone valve rod (29), a cone valve clack (26) and a cone valve core (28), the first flow passage, the second flow passage and the third flow passage are communicated, the pressure stabilizing valve comprises a pressure stabilizing valve body, a first threaded ring (8), a support plate (2), a shaft wheel (6) and a sealing gasket (7), the circumferential inner wall of the top end of the pressure stabilizing valve body is provided with the first threaded ring (8), the support plate (2) is arranged on the left side of the inner wall of the pressure stabilizing valve body, an insertion piece is arranged on, the inserting groove of the inner wall of the left side of the pressure stabilizing valve body is connected with the inserting piece of the left side of the supporting plate (2) in a plug-in manner, the spring seat (3) is stacked above the supporting plate (2), the supporting plate (2) is connected with the spring seat (3) in a pasting manner, the spring (4) is connected with the spring seat (3) in a pasting manner, the valve clack (5) is arranged above the spring (4), the valve clack (5) is connected with the left side of the inner wall of the pressure stabilizing valve body and the shaft wheel (6), the shaft wheel (6) is respectively connected with the inner wall of the pressure stabilizing valve body and the valve clack (5) in a shaft manner, the inner wall of the right side of the pressure stabilizing valve is provided with the sealing gasket (7), the left side of the sealing gasket (7) is connected with the valve clack (5), the sealing, the flat valve comprises a flat valve body (9), a second threaded ring (17) is arranged at the top end of the interior of the flat valve body (9), the flat valve body is in threaded connection with the top end of the flat valve body (9), the flat valve comprises the flat valve body (9), the second threaded ring (17), a rolling bearing (15), a bearing ring (18), a shaft neck (16), a shaft body (13), a handle (22), a valve frame (21), a packing valve rod (20) and a baffle plate (14), the handle (22) is arranged on the right side of the flat valve body (9), and the main valve rod (11) transversely penetrates through the right side of the flat valve body (9), and the right port of the main valve rod (11) is welded with the left port of the handle (22), a baffle plate (14) is arranged between the outside of the right valve wall of the flat valve body (9) and the handle (22), the baffle plate (14) is in threaded connection with the outside of the flat valve body (9) through a bolt, a valve rod filler (20) is installed on the right side of the inside of the flat valve body (9), the valve rod filler (20) is welded with the inside of the flat valve body (9), the left side of the valve rod filler (20) is connected with a valve frame (21), the valve frame (21) is in threaded connection with the valve rod filler (20) through a bolt, a shaft neck (16) is installed on a valve rod inside the flat valve body (9), the right side of the shaft neck (16) is connected with the flat valve body (9), the left side of the shaft neck (16) is connected with a shaft body (13), and the shaft neck (16, the valve comprises a valve frame (21), a rolling bearing (15) is installed between the valve frame (21) and a valve rod, the rolling bearing (15) is welded with the valve frame (21), the rolling bearing (15) is connected with a shaft journal (16) in a fitting mode through a shaft bead, a shaft body (13) is arranged on a rod body of a main valve rod (11), the shaft body (13) surrounds the outer layer of the rod body of the main valve rod (11), a main valve seat (12) is arranged at a port on the left side of the main valve rod (11), a hole groove meshed with a port on the left side of the main valve rod (11) is formed in the right side of the main valve seat (12), a bearing ring (18) is installed at a port on the left side of the shaft body (13), the bearing ring (18) is rotatably connected with a shaft flashboard (13), a bearing ring (10) is installed on the bearing ring (18), and a first round hole with the diameter of the bearing ring (, the flashboard (10) is welded with an outer side ring body of the bearing ring (18), the overflow valve comprises a fourth thread ring (23), a shaft chain (27), a pressure regulating hand wheel (30), a fourth internal thread, a fifth external thread, a hand wheel ring (24) and an overflow valve body (25), a third thread ring (19) is arranged at the bottom end inside the flat valve body (9), a second external thread is arranged at the top end outside the overflow valve body (25), the overflow valve body (25) is in threaded connection with the third thread ring (19) of the flat valve body (9), the fourth thread ring (23) is arranged on the left side of the overflow valve body (25), a second round hole is formed in the left side of the overflow valve body (25), the outer side ring body of the fourth thread ring (23) is welded with the second round hole in the left side of the overflow valve body (25), the pressure regulating hand wheel (30) is installed at the bottom end outside the, the top of pressure regulating hand wheel (30) is connected with taper valve pole (29) to pressure regulating hand wheel (30) and taper valve pole (29) welding, overflow valve body (25) outside bottom is provided with the third external screw thread to hand wheel rim (24) is installed to overflow valve body (25) outside bottom, and the circumference inner wall of hand wheel rim (24) is provided with the internal thread, third external screw thread and hand wheel rim (24) rotatory spiro union, the inside bottom of overflow valve body (25) is provided with the fourth internal thread, and the inside outside of pressure regulating hand wheel (30) is provided with the fifth external screw thread, pressure regulating hand wheel (30) and overflow valve body (25) swivelling joint, taper valve pole (29) top is provided with cone valve core (28) to cone valve core (28) are perpendicular to be superimposed in taper valve pole (29) top, cone valve core (28) top is provided with cone valve clack (26), cone valve clack (26) bottom is provided with a arch and cone valve core (28), the cone valve clack (26) is engaged with a groove of a cone valve core (28).

2. The engine pressure-stabilizing flat overflow valve of claim 1, characterized in that: and a pressure numerical value is arranged on the circumferential surface of the pressure regulating hand wheel (30).

3. The engine pressure-stabilizing flat overflow valve of claim 2, characterized in that: the gate plate (10) is a hollow cylindrical metal cone.

4. The engine pressure-stabilizing flat overflow valve of claim 3, characterized in that: the sealing gasket (7) is made of high-density rubber.

5. The engine pressure-stabilizing flat overflow valve of claim 4, characterized in that: the valve frame (21) is hinged with the valve rod packing (20) through a hinge.

6. The engine pressure-stabilizing flat overflow valve of claim 5, characterized in that: the right side of the cone valve clack (26) is provided with a shaft chain (27), the shaft chain (27) is in rotary threaded connection with the cone valve clack (26) through screws, and the shaft chain (27) is attached to the inner wall of the overflow valve body (25).

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