High-pressure overflow safety pressure relief stop valve

Abstract

The invention discloses a high-pressure overflow safety pressure relief stop valve, which relates to the technical field of stop valves, has the advantages of automatically discharging a medium in a pipe to control the pressure of a system and ensure the safety of equipment and personnel, and has the key points of the technical scheme that the stop valve comprises a valve body and a guide sleeve integrated with the valve body, and a lifting threaded sleeve is connected in the guide sleeve in a sliding manner; the stop valve further comprises a control mechanism, the control mechanism comprises a lead screw arranged in the guide sleeve, the bottom end of the lead screw extends into the lifting threaded sleeve and is in threaded connection with the lifting threaded sleeve, and the top end of the lead screw extends out of the guide sleeve. A connecting plate is fixed to the part, extending out of the guide sleeve, of the top end and matched with a power assembly controlling the connecting plate to rotate.

Description

Technical Field

[0001] The invention relates to the technical field of stop valves, in particular to a high-pressure overflow safety pressure relief stop valve. Background Art

[0002] As a shut-off valve used to cut off the flow of media, the globe valve is sealed by applying torque to the valve stem. The valve stem applies pressure to the valve disc in the axial direction, so that the valve disc sealing surface fits tightly with the valve seat sealing surface, preventing the medium from leaking along the gap between the sealing surfaces. The sealing pair of the globe valve consists of the valve disc sealing surface and the valve seat sealing surface. The valve stem drives the valve disc to move vertically along the center line of the valve seat, thereby controlling the flow of the medium to achieve the purpose of cutting off the fluid flow or regulating the fluid flow.

[0003] Therefore, the stop valve is a forced sealing valve. After the stop valve is closed, it is difficult for the flowing medium to push the valve disc to move without external force to open it. Therefore, when the flowing medium pressure exceeds the specified value for a long time, the stop valve will be subjected to excessive water pressure for a long time, which will cause the stop valve body to deform or crack, resulting in aggravated water leakage, malfunction of normal operation, and endangerment of equipment and personnel safety. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a high-pressure overflow safety relief stop valve, which has the advantages of automatically discharging the medium in the pipe to control the system pressure and ensure the safety of equipment and personnel.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a stop valve with high-pressure overflow and safety pressure relief, including a valve body and a guide sleeve with an integrated structure with the valve body, a lifting threaded sleeve being slidably connected in the guide sleeve, and the bottom of the lifting threaded sleeve enters the valve body, and the part extending into the valve body is fixed with a piston plug for controlling the opening and closing of the valve body, the stop valve also includes: a control mechanism, including a screw rod arranged in the guide sleeve, the bottom end of the screw rod extends into the lifting threaded sleeve and is threadedly connected to the lifting threaded sleeve, the top end extends out of the guide sleeve, the part extending out of the guide sleeve is fixed with a connecting plate, and the connecting plate is equipped with a power component for controlling the rotation of the connecting plate; a pressure relief mechanism, including a supporting plate arranged outside the connecting plate and with an inverted C-shaped cross-section, movable grooves are provided on both sides of the bottom of the supporting plate, protrusions are integrated on both sides of the connecting plate, the protrusions pass through the supporting plate through the movable groove and are slidably connected to the movable groove, and the supporting plate and the connecting plate are connected by a spring.

[0006] By adopting the above technical solution, power is provided by the power component to drive the screw to rotate. The rotation of the screw will drive the lifting threaded sleeve connected to the screw thread to slide in the guide sleeve. The movement of the lifting threaded sleeve will drive the piston plug fixed to the lifting threaded sleeve to move, thereby controlling the opening and closing of the valve body. During the closing process of the valve body, when the system pressure exceeds the specified value, the water pressure will push the piston plug, lifting threaded sleeve, screw and connecting plate upward, thereby driving the protrusion of the integrated structure with the connecting plate to move in the movable groove, thereby realizing the opening of the valve body. At this time, the stop valve becomes a one-way valve, automatically discharging the medium in the pipe to control the system pressure and ensure the safety of equipment and personnel.

[0007] Preferably, the power assembly includes a square slot passing through the middle position of the support plate, a square card block adapted to the square slot is arranged in the square slot, the square card block extends out of the square slot, and the part of the square card block extending out of the square slot is fixed with a driven shaft, the circumferential outer wall of the driven shaft is nested with a driven gear coaxially fixed with the driven shaft, a driving shaft is arranged on the left side of the driven shaft, a worm gear and a driving gear coaxially fixed with the driving shaft are nested on the circumferential outer wall of the driving shaft, the driving gear and the driven gear are meshed with each other, a driving motor is arranged on the left side of the driving shaft, and a worm meshed with the turbine is coaxially fixed to the output shaft of the driving motor.

[0008] By adopting the above technical solution, the driving motor provides power to drive the worm fixed coaxially with the output shaft of the driving motor to rotate, and the power is transmitted through the worm, worm wheel, driving shaft, driving gear, driven gear, driven shaft, and square clamp block to drive the square clamp block to rotate. The rotation of the square clamp block will drive the support seat matched with the square clamp block to rotate, and then drive the screw to rotate.

[0009] Preferably, a support assembly for supporting the drive motor, the worm, the worm wheel, the driving shaft, the driving gear, the driven gear and the driven shaft is provided outside the guide sleeve.

[0010] By adopting the above technical solution and providing a support assembly to support components such as the drive motor, worm, worm wheel, driving shaft, driving gear, driven gear and driven shaft, the stability and safety of the stop valve are improved.

[0011] Preferably, the support assembly includes a support plate fixed outside the guide sleeve and having a concave cross-section, the support plate is sleeved outside the support plate and the top of the support plate is higher than the top of the support plate, a mounting seat is fixed on the top of the support plate, the mounting seat is sleeved outside the drive motor, worm, worm wheel, driving shaft, driving gear, driven gear and driven shaft, the drive motor is fixedly connected to the mounting seat, and the worm, worm wheel, driving shaft, driving gear, driven gear and driven shaft are all rotatably connected to the mounting seat through bearings.

[0012] By adopting the above technical solution, the support plate and the mounting seat cooperate to protect and support the drive motor, worm, worm wheel, driving shaft, driving gear, driven gear and driven shaft without affecting the movement of the connecting plate and the protrusion.

[0013] Preferably, an inlet channel connected to the supply pipe is opened on the left side of the valve body, and an outlet channel connected to the discharge pipe is opened on the right side. A connecting channel connecting the inlet channel and the outlet channel is provided inside the valve body, and an upper annular platform is provided on the connecting channel. When the piston plug contacts the upper surface of the upper annular platform, it is completely fitted with the upper annular platform and closes the valve body.

[0014] By adopting the above technical solution, the medium in the supply pipe flows along the water inlet flow channel, the connecting flow channel, and the water outlet flow channel in sequence, and is finally discharged from the discharge pipe.

[0015] Preferably, it also includes a cleaning mechanism, which includes a disc arranged below the piston plug, the diameter of the disc is smaller than the inner diameter of the upper annular platform, and two relatively arranged sliding grooves are provided on the upper surface of the disc. A cleaning plate is slidably connected in each sliding groove, and the cleaning plate extends out of the disc through the sliding groove. The part of the cleaning plate extending out of the disc conflicts with the upper annular platform, and the disc is equipped with a rotating component.

[0016] By adopting the above technical solution, power is provided by the rotating component to drive the disc to rotate, and then the cleaning plate on the disc is driven to rotate and clean the upper annular platform, thereby reducing the possibility of large particles of impurities on the upper annular platform causing wear and damage to the piston plug when it contacts the upper annular platform.

[0017] Preferably, the rotating component includes an annular groove opened in the middle position of the lower surface of the lifting thread sleeve, a movable sleeve adapted to the annular groove is arranged in the annular groove, the bottom end of the movable sleeve extends out of the lifting thread sleeve through the annular groove, the part of the movable sleeve extending out of the lifting thread sleeve passes through the disc and is coaxially fixed with the disc, and the movable sleeve is provided with a driving component that rotates in cooperation with the lifting thread sleeve.

[0018] By adopting the above technical solution, the driving assembly provides power to drive the movable sleeve to rotate in the annular groove, thereby driving the disc fixed to the movable sleeve to rotate.

[0019] Preferably, the driving assembly includes a serpentine groove provided on the outer wall of the circumference of the movable sleeve, a limiting block is slidably connected in the serpentine groove, the limiting block extends out of the serpentine groove, and the part of the limiting block extending out of the serpentine groove is fixed to the annular groove wall, a follower plate is fixed to the bottom of the movable sleeve, and a lower arc-shaped platform located directly below the upper annular platform is fixed to the inner groove wall of the water inlet channel, the center lines of the lower arc-shaped platform and the upper annular platform coincide, and the diameter of the upper annular platform is the same as the inner diameter and outer diameter of the lower arc-shaped platform, the follower plate is located between the upper annular platform and the lower arc-shaped platform, the diameter of the follower plate is smaller than the inner diameter of the upper annular platform and the lower arc-shaped platform, and follower blocks are fixed on both sides of the outer wall of the circumference of the follower plate, and the length of the follower block is greater than the width of the upper annular platform and the lower arc-shaped platform.

[0020] By adopting the above technical solution, the downward movement of the lifting threaded sleeve will drive the downward movement of the movable sleeve, and the downward movement of the movable sleeve will drive the downward movement of the follower plate. When the follower plate moves down to the follower block and contacts the lower arc-shaped platform, the follower plate and the follower block of the integrated structure are blocked by the lower arc-shaped platform, and the follower sleeve cannot continue to move downward with the lifting threaded sleeve. At this time, the lifting threaded sleeve continues to move downward, and through the cooperation of the serpentine groove and the limit block, the movable sleeve, disc, follower plate and follower block of the integrated structure rotate.

[0021] Preferably, the cross section of the piston plug is a flat-top cone, and a recovery component is provided at the bottom of the piston plug to cooperate with the cleaning plate to control the cleaning plate to be retracted into the slide groove so as not to affect the contact between the piston plug and the annular platform.

[0022] By adopting the above technical solution and setting up a recovery component, the cleaning plate can be controlled to be retracted into the slide groove before the piston plug contacts the annular platform after cleaning, without affecting the complete fit between the bottom of the piston plug and the annular platform, and without affecting the normal use of the stop valve.

[0023] Preferably, the recovery component includes an outer conical groove opened in the middle position of the lower surface of the piston plug, an annular block is fixed on the top of the outer conical groove, the bottom of the annular block is lower than the bottom of the piston plug, the outer diameter of the annular block is smaller than the inner diameter of the annular platform, and an inner conical groove is opened on the side of the annular block facing the disc, and each cleaning plate is integrated with a wedge block adapted to the inner conical groove.

[0024] By adopting the above technical solution, the downward movement of the piston plug will drive the annular block with the integrated structure of the piston plug to move downward. The annular block moves downward and contacts the wedge block, pushing the wedge block and the cleaning plate of the integrated structure into the slide groove. When the piston plug contacts the annular platform, the cleaning plate does not contact the annular platform.

[0025] The beneficial effects of the present invention are: power is provided by the power component to drive the screw to rotate, and the rotation of the screw will drive the lifting threaded sleeve connected to the screw thread to slide in the guide sleeve, and the movement of the lifting threaded sleeve will drive the piston plug fixed to the lifting threaded sleeve to move, thereby controlling the opening and closing of the valve body. During the closing process of the valve body, when the system pressure exceeds the specified value, the water pressure will push the piston plug, lifting threaded sleeve, screw and connecting plate to move up, and then drive the protrusion of the integrated structure with the connecting plate to move in the movable groove, thereby realizing the opening of the valve body. At this time, the stop valve becomes a one-way valve, automatically discharging the medium in the pipe to control the system pressure, ensuring the safety of equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 Schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the overall top view of the structure of this embodiment; Figure 3 This is a schematic diagram of the overall left side structure of this embodiment; Figure 4 This is a schematic diagram of the overall right side structure of this embodiment; Figure 5 This is a schematic diagram of the overall explosion structure of this embodiment; Figure 6 For this embodiment Figure 5 A schematic diagram of the structure enlarged in the middle; Figure 7 This is a schematic diagram of the structure of the worm gear in this embodiment; Figure 8 This is a schematic diagram showing the structure of the connecting plate of this embodiment; Figure 9 For this embodiment Figure 5 The enlarged structural diagram at B in the middle; Figure 10 This is a schematic structural diagram of the lower arc-shaped platform of this embodiment; Figure 11 This is a schematic structural diagram of the inner tapered groove of this embodiment; Figure 12 This is a schematic structural diagram of a cross-section of the lifting threaded sleeve of this embodiment.

[0028] Description of reference numerals: In the figure: 1. Valve body; 101. Water inlet channel; 102. Water outlet channel; 103. Connecting channel; 2. Guide sleeve; 3. Lifting threaded sleeve; 4. Piston plug; 5. Control mechanism; 501. Screw; 502. Connecting plate; 6. Pressure relief mechanism; 601. Support plate; 602. Movable groove; 603. Protrusion; 604. Spring; 7. Power assembly; 701. Square slot; 702. Square block; 703. Driven shaft; 704. Driven gear; 705. Driving shaft; 706. Worm gear; 707. Driving gear; 708. Drive motor; 709, worm; 8, support assembly; 801, support plate; 802, mounting seat; 9, upper annular platform; 10, cleaning mechanism; 1001, disc; 1002, slide; 1003, cleaning plate; 11, rotating assembly; 1101, annular groove; 1102, movable sleeve; 1103, serpentine groove; 1104, limit block; 1105, follower plate; 1106, lower arc platform; 1107, follower block; 12, recovery assembly; 1201, outer conical groove; 1202, annular block; 1203, inner conical groove; 1204, wedge block. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0030] A high-pressure overflow safety relief stop valve, such as Figure 1-12 , including a valve body 1 and a guide sleeve 2 with an integrated structure with the valve body 1, the guide sleeve 2 is located in the middle position of the upper surface of the valve body 1, the valve body 1 and the guide sleeve 2 are connected to each other, a water inlet channel 101 connected to the supply pipe is opened on the left side of the valve body 1, and a water outlet channel 102 connected to the discharge pipe is opened on the right side. A connecting channel 103 connecting the water inlet channel 101 and the water outlet channel 102 is provided inside the valve body 1, and a piston plug 4 for opening and closing the connecting channel 103 is provided in the valve body 1. A circular groove is passed through the middle position of the piston plug 4, and a lifting threaded sleeve 3 is provided in the circular groove. The piston plug 4 is nested in the outside of the lifting threaded sleeve 3 through the circular groove and is fixedly connected to the circumferential outer wall of the lifting threaded sleeve 3. The lifting threaded sleeve 3 closes the circular groove. The piston plug 4 is located outside the bottom of the lifting threaded sleeve 3, and the top of the lifting threaded sleeve 3 extends into the guide sleeve 2 and is slidably connected to the guide sleeve 2 in the vertical direction.

[0031] like Figure 3 and Figure 4 and Figure 5 and Figure 9, a control mechanism 5 for controlling the vertical movement of the lifting threaded sleeve 3 and the piston plug 4 of the integrated structure is provided in the guide sleeve 2. The control mechanism 5 includes a screw rod 501 arranged in the guide sleeve 2. The screw rod 501 does not contact the guide sleeve 2 and is coaxially arranged with the guide sleeve 2. The bottom end of the screw rod 501 extends into the lifting threaded sleeve 3 and is threadedly connected to the lifting threaded sleeve 3, and the top extends out of the guide sleeve 2. The part extending out of the guide sleeve 2 is fixed with a connecting plate 502. The connecting plate 502 is equipped with a power component 7 for controlling the rotation of the connecting plate 502. Power is provided by the power component 7 to drive the screw rod 501 to rotate. The rotation of the screw rod 501 will drive the lifting threaded sleeve 3 threadedly connected to the screw rod 501 to slide in the guide sleeve 2. The movement of the lifting threaded sleeve 3 will drive the piston plug 4 fixed to the lifting threaded sleeve 3 to move, thereby controlling the opening and closing of the valve body 1.

[0032] like Figure 3 and Figure 4 and Figure 5 and Figure 8 and Figure 9 , a supporting plate 601 with an inverted C-shaped cross-section is provided on the outer cover of the connecting plate 502, and movable grooves 602 are opened on both sides of the bottom of the supporting plate 601, and protrusions 603 are integrated on both sides of the connecting plate 502. The protrusions 603 pass through the supporting plate 601 through the movable groove 602 and are slidingly connected to the movable groove 602. The supporting plate 601 and the connecting plate 502 are connected by a spring 604. During the closing process of the valve body 1, when the system pressure exceeds the specified value, the water pressure will push the piston plug 4, the lifting threaded sleeve 3, the screw rod 501, and the connecting plate 502 to move upward, thereby driving the protrusion 603 of the integrated structure with the connecting plate 502 to move in the movable groove 602, thereby realizing the opening of the valve body 1. At this time, the stop valve becomes a one-way valve, automatically discharging the medium in the pipe to control the system pressure and ensure the safety of equipment and personnel.

[0033] like Figure 1 and Figure 2 and Figure 3 and Figure 4 and Figure 5 and Figure 6 and Figure 7 and Figure 8 and Figure 9The power assembly 7 includes a square slot 701 that passes through the middle position of the support plate 601, and a square block 702 that is adapted to the square slot 701 is provided in the square slot 701. The square block 702 is fixed to the support plate 601 through the square slot 701, and the square block 702 extends out of the square slot 701. The part of the square block 702 extending out of the square slot 701 is fixed with a driven shaft 703, and the outer wall of the driven shaft 703 is nested with a driven gear 704 coaxially fixed with the driven shaft 703. A driving shaft 705 is provided on the left side of the driven shaft 703, and the outer wall of the driving shaft 705 is nested with a worm gear 706 and a driving gear 707 coaxially fixed with the driving shaft 705. The driving gear 707 and the driven gear 704 are meshed with each other. A driving motor 708 is provided on the left side of the driving shaft 705, and the output shaft of the driving motor 708 is coaxially fixed with a worm 709 meshing with the turbine.

[0034] like Figure 1 and Figure 2 and Figure 3 and Figure 4 and Figure 5 and Figure 6 and Figure 7 and Figure 8 and Figure 9 , powered by the driving motor 708, drives the worm 709 coaxially fixed with the output shaft of the driving motor 708 to rotate, and transmits power through the worm 709, worm wheel 706, driving shaft 705, driving gear 707, driven gear 704, driven shaft 703, and square block 702, driving the square block 702 to rotate. The rotation of the square block 702 will drive the support seat matched with the square block 702 to rotate, and then drive the screw 501 to rotate. The support plate 801 and the mounting seat 802 cooperate to protect and support the driving motor 708, worm 709, worm wheel 706, driving shaft 705, driving gear 707, driven gear 704 and driven shaft 703, without affecting the movement of the connecting plate 502 and the protrusion 603.

[0035] like Figure 1 and Figure 2 and Figure 3 and Figure 4 and Figure 5 and Figure 6 and Figure 7 and Figure 8, the guide sleeve 2 is provided with a support assembly 8 for supporting the drive motor 708, the worm 709, the worm wheel 706, the active shaft 705, the active gear 707, the driven gear 704 and the driven shaft 703. By setting the support assembly 8, the support assembly 8 includes a support plate 801 fixed to the outside of the guide sleeve 2 and having a concave cross-section. The support plate 801 is sleeved outside the support plate 601 and the top of the support plate 801 is higher than the top of the support plate 601. A mounting seat 802 is fixed to the top of the support plate 801, and the mounting seat 802 is sleeved on In addition to the drive motor 708, the worm 709, the worm wheel 706, the driving shaft 705, the driving gear 707, the driven gear 704 and the driven shaft 703, the drive motor 708 is fixedly connected to the mounting base 802, the worm 709, the worm wheel 706, the driving shaft 705, the driving gear 707, the driven gear 704 and the driven shaft 703 are all located in the mounting base 802 and are rotatably connected to the mounting base 802 through bearings, and the bottom end of the driven shaft 703 passes through the mounting base 802 and is rotatably connected to the mounting base 802.

[0036] like Figure 10 An upper annular platform 9 is provided on the connecting flow channel 103 and is arranged coaxially therewith. The inner diameter of the upper annular platform 9 is the same as the inner diameter of the connecting flow channel 103. When the piston plug 4 contacts the upper surface of the upper annular platform 9, it is completely fitted with the upper annular platform 9 and closes the valve body 1. In order to reduce the possibility of large particles of impurities being located on the upper annular platform 9 when the piston plug 4 contacts the upper annular platform 9, causing wear and damage to the piston plug 4, a cleaning mechanism 10 is provided under the piston plug 4.

[0037] like Figure 10 and Figure 11 and Figure 12 The cleaning mechanism 10 includes a disc 1001 arranged below the piston plug 4. The diameter of the disc 1001 is smaller than the inner diameter of the upper annular platform 9. Two relatively arranged chutes 1002 are provided on the upper surface of the disc 1001. A cleaning plate 1003 is slidably connected in each chute 1002. The cleaning plate 1003 extends out of the disc 1001 through the chute 1002. The part of the cleaning plate 1003 extending out of the disc 1001 conflicts with the upper annular platform 9. The disc 1001 is equipped with a rotating component 11, which provides power through the rotating component 11 to drive the disc 1001 to rotate, thereby driving the cleaning plate 1003 on the disc 1001 to rotate and clean the upper annular platform 9.

[0038] like Figure 10 and Figure 11 and Figure 12The rotating component 11 includes an annular groove 1101 opened in the middle position of the lower surface of the lifting thread sleeve 3, and a movable sleeve 1102 adapted to the annular groove 1101 is provided in the annular groove 1101. The bottom end of the movable sleeve 1102 extends out of the lifting thread sleeve 3 through the annular groove 1101. The part of the movable sleeve 1102 extending out of the lifting thread sleeve 3 passes through the disc 1001 and is coaxially fixed with the disc 1001. A driving component that rotates in coordination with the lifting thread sleeve 3 is provided on the movable sleeve 1102. The driving component provides power to drive the movable sleeve 1102 to rotate in the annular groove 1101, thereby driving the disc 1001 fixed to the movable sleeve 1102 to rotate.

[0039] like Figure 10 and Figure 11 and Figure 12 The driving component includes a serpentine groove 1103 provided on the outer wall of the circumference of the movable sleeve 1102, a limiting block 1104 is slidably connected in the serpentine groove 1103, and the limiting block 1104 extends out of the serpentine groove 1103. The portion of the limiting block 1104 extending out of the serpentine groove 1103 is fixed to the wall of the annular groove 1101. A follower plate 1105 is fixed to the bottom of the movable sleeve 1102, and a lower arc-shaped platform 1106 located directly below the upper annular platform 9 is fixed to the inner wall of the water inlet channel 101. The center lines of the lower arc-shaped platform 1106 and the upper annular platform 9 coincide with each other, and the diameter of the upper annular platform 9 is the same as that of the lower arc-shaped platform 1106. The inner diameter and outer diameter of the annular platform 1106 are the same. The follower plate 1105 is located between the upper annular platform 9 and the lower arc-shaped platform 1106. The diameter of the follower plate 1105 is smaller than the inner diameter of the upper annular platform 9 and the lower arc-shaped platform 1106. Follower blocks 1107 are fixed on both sides of the outer wall of the circumference of the follower plate 1105. The length of the follower block 1107 is greater than the width of the upper annular platform 9 and the lower arc-shaped platform 1106. The lower surface of the follower block 1107 is wedge-shaped, and the upper surface of the lower arc-shaped platform 1106 is also wedge-shaped to match the follower block 1107, which facilitates the rotation of the follower block 1107 and the follower plate 1105.

[0040] like Figure 10 and Figure 11 and Figure 12 The downward movement of the lifting threaded sleeve 3 will drive the downward movement of the movable sleeve 1102, and the downward movement of the movable sleeve 1102 will drive the downward movement of the follower plate 1105. When the follower plate 1105 moves down to the follower block 1107 and contacts the lower arc platform 1106, the follower plate 1105 and the follower block 1107 of the integrated structure are blocked by the lower arc platform 1106, and the follower sleeve cannot continue to move downward with the lifting threaded sleeve 3. At this time, the lifting threaded sleeve 3 continues to move downward, and through the cooperation of the serpentine groove 1103 and the limit block 1104, the movable sleeve 1102, the disc 1001, the follower plate 1105 and the follower block 1107 of the integrated structure rotate.

[0041] like Figure 10 and Figure 11and Figure 12 The cross-section of the piston plug 4 is a flat-top cone, and a recovery component 12 is provided at the bottom of the piston plug 4 for cooperating with the cleaning plate 1003 to control the cleaning plate 1003 to be retracted into the slide groove 1002 so as not to affect the contact between the piston plug 4 and the annular platform. By setting the recovery component 12, after cleaning, the cleaning plate 1003 is controlled to be retracted into the slide groove 1002 before the piston plug 4 contacts the annular platform, which does not affect the complete fit between the bottom of the piston plug 4 and the annular platform and does not affect the normal use of the stop valve.

[0042] like Figure 10 and Figure 11 and Figure 12 The recovery component 12 includes an outer conical groove 1201 provided in the middle position of the lower surface of the piston plug 4, and an annular block 1202 is fixed on the top of the outer conical groove 1201. The bottom of the annular block 1202 is lower than the bottom of the piston plug 4, and the outer diameter of the annular block 1202 is smaller than the inner diameter of the annular platform. The annular block 1202 is provided with an inner conical groove 1203 toward the side of the disc 1001. The upper surface of each cleaning plate 1003 is integrated with a wedge block 1204 adapted to the inner conical groove 1203. The downward movement of the piston plug 4 will drive the annular block 1202 of the integrated structure with the piston plug 4 to move downward, and the annular block 1202 moves downward and contacts with the wedge block 1204, pushing the wedge block 1204 of the integrated structure and the cleaning plate 1003 into the slide groove 1002. When the piston plug 4 contacts the annular platform, the cleaning plate 1003 does not contact the annular platform, and the cleaning plate 1003 is connected to the disc 1001 through a stainless steel spring sheet.

[0043] When in use, when it is necessary to close the valve body 1, the drive motor 708 is turned on, and the drive motor 708 provides power to drive the worm 709 coaxially fixed with the output shaft of the drive motor 708 to rotate. The rotation of the worm 709 will drive the worm wheel 706 meshing with the worm 709 to rotate. The rotation of the worm wheel 706 will drive the driving shaft 705 coaxially fixed with the worm wheel 706 to rotate. The rotation of the driving shaft 705 will drive the driving gear 707 coaxially fixed with the driving shaft 705 to rotate. The rotation of the driving gear 707 will drive the driven gear 704 meshing with the driving gear 707 to rotate. The rotation of the driven gear 704 will drive the driven shaft 703 coaxially fixed with the driven gear 704 to rotate. The rotation of the driven shaft 703 will drive The square clamping block 702 fixed to the driven shaft 703 rotates, thereby driving the support plate 601 sleeved outside the square clamping block 702 and adapted to the square clamping block 702 to rotate. Since the protrusion 603 passes through the movable groove 602, and the connecting plate 502 is fixedly connected to the support plate 601 by the spring 604, the rotation of the support plate 601 will drive the connecting plate 502 to rotate, thereby driving the screw rod 501 of the integrated structure with the connecting plate 502 to rotate. The rotation of the screw rod 501 will drive the lifting threaded sleeve 3 threadedly connected to the screw rod 501 to move downward in the guide sleeve 2. The downward movement of the lifting threaded sleeve 3 will drive the piston plug 4 fixed to the lifting threaded sleeve 3 to move downward, and the guide sleeve 2 plays a guiding and limiting role in the vertical movement of the lifting threaded sleeve 3; At the same time, the downward movement of the lifting threaded sleeve 3 will drive the moving sleeve 1102 to move downward, and the downward movement of the moving sleeve 1102 will drive the moving plate 1105 coaxially fixed with the moving sleeve 1102 to move downward. When the following plate 1105 moves down to the following block 1107 and contacts the lower arc-shaped platform 1106, the following plate 1105 and the following block 1107 of the integrated structure are blocked by the lower arc-shaped platform 1106, and the following sleeve cannot continue to move downward with the lifting threaded sleeve 3. At this time, the cleaning plate 1003 extends out of the disc 1001 at one end under the action of the stainless steel spring sheet. At this time, the length between the distal ends of the two cleaning plates 1003 is greater than the outer diameter of the piston plug, and the cleaning plate 1003 conflicts with the upper annular platform 9; At this time, the lifting threaded sleeve 3 continues to move downward, and through the cooperation of the serpentine groove 1103 and the limit block 1104, the integrated structure of the moving sleeve 1102, the disc 1001, the follower plate 1105 and the follower block 1107 rotate, driving the two cleaning plates 1003 to rotate on the upper surface of the upper annular platform 9 and clean the large particles of impurities on the upper annular platform 9; The annular block 1202 moves downward as the piston plug 4 moves downward. The annular block 1202 moves downward and contacts the wedge block 1204, pushing the integrated wedge block 1204 and the cleaning plate 1003 into the slide groove 1002. The stainless steel spring sheet is compressed until the bottom end of the piston plug 4 is completely fitted with the upper annular platform 9. The cleaning plate 1003 is retracted into the outer conical groove 1201 and does not contact the annular platform, so as not to affect the sealing of the upper annular platform 9 by the piston plug 4. When it is necessary to open the valve body 1 and adjust the flow rate of the valve body 1, the driving motor 708 drives the worm gear to reverse, thereby driving the screw rod 501 to reverse, and the lifting threaded sleeve 3 moves up in the guide sleeve 2. The upward movement of the lifting threaded sleeve 3 will drive the piston plug 4 fixed to the lifting threaded sleeve 3 to move up, and at the same time drive the disc 1001, the follower plate 1105 and the follower block 1107 to move up until the upper surface of the follower plate 1105 contacts the lower surface of the upper annular platform 9. At this time, the lifting threaded sleeve 3 continues to move up, and the movable sleeve 1102 is stuck because the follower plate 1105 is stuck on the upper annular platform 9. Unable to continue to move up with the lifting thread sleeve 3, at this time, the lifting thread sleeve 3 moves up through the cooperation of the serpentine groove 1103 and the limit block 1104, the movable sleeve 1102, the disc 1001, the follower plate 1105 and the follower block 1107 are reversed and distanced from the lifting thread sleeve 3, returning to the initial state, the annular block 1202 is disconnected from the wedge block 1204, the stainless steel spring sheet rebounds, pushing the cleaning plate 1003 to slide to the initial position, and then controlling the drive motor 708 to rotate again, adjusting the position of the follower plate 1105 and adjusting the medium flow rate; During the closing process of the valve body 1, when the system pressure exceeds the specified value, the medium entering the water inlet channel 101 pushes the follower plate 1105, the movable sleeve 1102, the disc 1001, the piston plug 4, the lifting threaded sleeve 3, the screw rod 501, and the connecting plate 502 to move upward. The upward movement of the connecting plate 502 will drive the protrusion 603 of the integrated structure with the connecting plate 502 to move upward in the movable groove 602, and the spring 604 is compressed, thereby realizing the opening of the valve body 1. At this time, the stop valve becomes a one-way valve, automatically discharging the medium in the pipe to control the system pressure, ensuring the safety of equipment and personnel.

[0044] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A high-pressure overflow safety relief stop valve, comprising a valve body (1) and a guide sleeve (2) of an integrated structure with the valve body (1), a lifting threaded sleeve (3) being slidably connected in the guide sleeve (2), and the bottom of the lifting threaded sleeve (3) entering the valve body (1), and a piston plug (4) for controlling the opening and closing of the valve body (1) being fixed to the portion extending into the valve body (1), characterized in that: The stop valve also includes: The control mechanism (5) includes a screw rod (501) disposed in the guide sleeve (2), the bottom end of the screw rod (501) extending into the lifting thread sleeve (3) and being threadedly connected to the lifting thread sleeve (3), the top end extending out of the guide sleeve (2), the portion of the top end extending out of the guide sleeve (2) being fixed with a connecting plate (502), and the connecting plate (502) being equipped with a power assembly (7) for controlling the rotation of the connecting plate (502); The pressure relief mechanism (6) comprises a support plate (601) arranged outside the connecting plate (502) and having an inverted C-shaped cross-section, wherein movable grooves (602) are provided on both sides of the bottom of the support plate (601), and protrusions (603) are integrated on both sides of the connecting plate (502), and the protrusions (603) pass through the support plate (601) through the movable grooves (602) and are slidably connected to the movable grooves (602), and the support plate (601) and the connecting plate (502) are connected via springs (604).

2. A high-pressure overflow safety relief stop valve according to claim 1, characterized in that: The power assembly (7) comprises a square card slot (701) penetrating the middle position of the support plate (601); a square card block (702) adapted to the square card slot (701) is provided in the square card slot (701); the square card block (702) extends out of the square card slot (701); a driven shaft (703) is fixed to the portion of the square card block (702) extending out of the square card slot (701); a driven gear (704) coaxially fixed to the driven shaft (703) is embedded in the circumferential outer wall of the driven shaft (703); A driving shaft (705) is provided on the left side of the driven shaft (703), a worm wheel (706) and a driving gear (707) coaxially fixed with the driving shaft (705) are embedded in the circumferential outer wall of the driving shaft (705), the driving gear (707) and the driven gear (704) are meshed with each other, and a driving motor (708) is provided on the left side of the driving shaft (705), and a worm (709) meshing with the turbine is coaxially fixed to the output shaft of the driving motor (708).

3. A high-pressure overflow safety relief stop valve according to claim 2, characterized in that: A support assembly (8) is provided outside the guide sleeve (2) for supporting a driving motor (708), a worm (709), a worm wheel (706), a driving shaft (705), a driving gear (707), a driven gear (704) and a driven shaft (703).

4. A high-pressure overflow safety relief stop valve according to claim 3, characterized in that: The support assembly (8) includes a support plate (801) fixed outside the guide sleeve (2) and having a concave cross-section. The support plate (801) is sleeved outside the support plate (601) and the top of the support plate (801) is higher than the top of the support plate (601). A mounting seat (802) is fixed to the top of the support plate (801). The mounting seat (802) is sleeved outside the drive motor (708), the worm (709), the worm wheel (706), the driving shaft (705), the driving gear (707), the driven gear (704) and the driven shaft (703). The drive motor (708) is fixedly connected to the mounting seat (802), and the worm (709), the worm wheel (706), the driving shaft (705), the driving gear (707), the driven gear (704) and the driven shaft (703) are all rotatably connected to the mounting seat (802) through bearings.

5. A high-pressure overflow safety relief stop valve according to claim 1, characterized in that: A water inlet channel (101) communicating with the supply pipe is provided on the left side of the valve body (1), and a water outlet channel (102) communicating with the discharge pipe is provided on the right side. A connecting channel (103) communicating with the water inlet channel (101) and the water outlet channel (102) is provided inside the valve body (1). An upper annular platform (9) is provided on the connecting channel (103). When the piston plug (4) contacts the upper surface of the upper annular platform (9), the piston plug (4) is completely fitted with the upper annular platform (9) and closes the valve body (1).

6. A high-pressure overflow safety relief stop valve according to claim 5, characterized in that: The cleaning mechanism (10) further comprises a disc (1001) arranged below the piston plug (4), wherein the diameter of the disc (1001) is smaller than the inner diameter of the upper annular platform (9), and the upper surface of the disc (1001) is provided with two oppositely arranged chutes (1002), each of which is slidably connected with a cleaning plate (1003), and the cleaning plate (1003) extends out of the disc (1001) through the chutes (1002), and the portion of the cleaning plate (1003) extending out of the disc (1001) contacts the upper annular platform (9), and the disc (1001) is equipped with a rotating assembly (11).

7. A high-pressure overflow safety relief stop valve according to claim 6, characterized in that: The rotating assembly (11) comprises an annular groove (1101) provided in the middle of the lower surface of the lifting threaded sleeve (3); a movable sleeve (1102) adapted to the annular groove (1101) is provided in the annular groove (1101); the bottom end of the movable sleeve (1102) extends out of the lifting threaded sleeve (3) through the annular groove (1101); the portion of the movable sleeve (1102) extending out of the lifting threaded sleeve (3) passes through the disc (1001) and is coaxially fixed to the disc (1001); and a driving assembly for rotating in cooperation with the lifting threaded sleeve (3) is provided on the movable sleeve (1102).

8. A high-pressure overflow safety relief stop valve according to claim 7, characterized in that: The driving assembly includes a serpentine groove (1103) formed on the outer circumferential wall of the movable sleeve (1102), a limiting block (1104) slidably connected in the serpentine groove (1103), the limiting block (1104) extending out of the serpentine groove (1103), a portion of the limiting block (1104) extending out of the serpentine groove (1103) being fixed to the groove wall of the annular groove (1101), and a follower plate (1105) being fixed to the bottom of the movable sleeve (1102); A lower arc-shaped platform (1106) located directly below the upper annular platform (9) is fixed to the inner groove wall of the water inlet channel (101), the center lines of the lower arc-shaped platform (1106) and the upper annular platform (9) coincide, and the diameter of the upper annular platform (9) is the same as the inner diameter and outer diameter of the lower arc-shaped platform (1106). A follower plate (1105) is located between the upper annular platform (9) and the lower arc-shaped platform (1106), the diameter of the follower plate (1105) is smaller than the inner diameters of the upper annular platform (9) and the lower arc-shaped platform (1106), and follower blocks (1107) are fixed on both sides of the circumferential outer wall of the follower plate (1105), and the length of the follower blocks (1107) is greater than the width of the upper annular platform (9) and the lower arc-shaped platform (1106).

9. A high-pressure overflow safety relief stop valve according to claim 8, characterized in that: The cross section of the piston plug (4) is a flat-top cone, and a recovery component (12) is provided at the bottom of the piston plug (4) for cooperating with the cleaning plate (1003) to control the cleaning plate (1003) to be retracted into the chute (1002) so as not to affect the contact between the piston plug (4) and the annular platform.

10. A high-pressure overflow safety relief stop valve according to claim 9, characterized in that: The recovery component (12) includes an outer conical groove (1201) provided in the middle of the lower surface of the piston plug (4), an annular block (1202) is fixed to the top of the outer conical groove (1201), the bottom of the annular block (1202) is lower than the bottom of the piston plug (4), the outer diameter of the annular block (1202) is smaller than the inner diameter of the annular platform, an inner conical groove (1203) is provided on the side of the annular block (1202) facing the disc (1001), and a wedge block (1204) adapted to the inner conical groove (1203) is integrated on the upper surface of each cleaning plate (1003).

Images