CN112049954A - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN112049954A CN112049954A CN202010942847.7A CN202010942847A CN112049954A CN 112049954 A CN112049954 A CN 112049954A CN 202010942847 A CN202010942847 A CN 202010942847A CN 112049954 A CN112049954 A CN 112049954A
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- block
- locking
- wedge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/12—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces
- F16K3/14—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The invention discloses a gate valve, which comprises a valve body, wherein a valve cavity is arranged in the valve body, an inlet pipe and an outlet pipe which are communicated with the valve cavity are arranged on the outer side of the valve body, a valve cover is fixedly arranged at an opening at the upper end of the valve cavity of the valve body, a wedge-shaped block is connected in the valve cavity in a sliding manner along the vertical direction, and a bottom plate is arranged at the lower end of the wedge-shaped block; a left flashboard and a right flashboard are symmetrically arranged on the left side and the right side of the wedge-shaped block in the valve cavity, and a valve rod assembly is arranged on the valve cover; the lower end of the left flashboard is provided with two left locking grooves, and the bottom board is provided with two left locking rods extending into the left locking grooves in parallel; the lower end of the right flashboard is provided with two right locking grooves in parallel along the vertical direction, and the bottom board is provided with two right locking rods extending into the right locking grooves in parallel; a left locking assembly is arranged in the left flashboard, and a right locking assembly is arranged in the right flashboard; a left unlocking limiting assembly and a right unlocking limiting assembly are arranged in the valve cavity; the gate valve is reasonable in structure, reliable in closing and long in service life.
Description
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to a gate valve.
Background
The gate valve is the most important valve at present, and is widely used for the circulation and the stopping of media such as liquid, gas, dust and the like. The parallel double-gate valve has small flow resistance due to no necking, and is widely applied to various industrial pipelines such as water, petroleum, natural gas, finished oil conveying pipelines and the like. The left and right flashboards of the prior parallel double-flashboard gate valve are generally opened by a wedge-type mechanism. The wedge-type opening mechanism is usually realized by a wedge angle with an upward opening formed by inserting a conical head of a valve rod head into two gate plates. When the valve rod promotes the flashboard and closes the valve downwards, the downward motion of a side, on the one hand from the top down application of force when the flashboard meets the resistance and struts the flashboard. When the flashboards are not in place, the two flashboards are opened left and right by the opening mechanism because the flashboards are prevented from descending by the friction force of the sealing surfaces, so that the closing is more difficult, the sealing surfaces are scratched, even the flashboards are blocked, the phenomenon of not-in-place closing is caused, and the normal operation of the valve is seriously influenced.
Disclosure of Invention
The invention aims to provide a gate valve which is reasonable in structure, reliable in closing and long in service life.
In order to achieve the purpose, the invention provides the following technical scheme:
a gate valve comprises a valve body, wherein a valve cavity is arranged in the valve body, an inlet pipe and an outlet pipe which are communicated with the valve cavity are arranged on the outer side of the valve body, the inlet pipe and the outlet pipe are coaxially arranged, a valve cover is fixedly arranged at an opening at the upper end of the valve cavity of the valve body, a wedge block is connected in the valve cavity in a sliding mode along the vertical direction, and a bottom plate is arranged at the lower end of the wedge block; a left flashboard and a right flashboard which are positioned above the bottom plate are symmetrically arranged on the left side and the right side of the wedge-shaped block in the valve cavity, and a valve rod assembly for driving the wedge-shaped block to move up and down is arranged on the valve cover; the lower end of the left flashboard is provided with two left locking grooves in parallel along the vertical direction, and the bottom board is provided with two left locking rods extending into the left locking grooves in parallel; the lower end of the right flashboard is provided with two right locking grooves in parallel along the vertical direction, and the bottom board is provided with two right locking rods extending into the right locking grooves in parallel; a left locking assembly is arranged at each left locking groove in the left flashboard, and a right locking assembly is arranged at each right locking groove in the right flashboard; a left unlocking limiting assembly and a right unlocking limiting assembly are arranged on the side wall, close to the lower end, in the valve cavity; when the gate valve is opened, the wedge block is positioned at the upper end of the valve cavity, the left gate plate is locked on the left lock rod through the left locking assembly, and the right gate plate is locked on the right lock rod through the right locking assembly; when the gate valve is closed, the wedge block is located the lower extreme of valve pocket, and left locking Assembly is opened to the spacing subassembly of left unblock, and the lower extreme of left flashboard is contradicted on the spacing subassembly of left unblock and is compressed tightly in import pipe department by the wedge block, and the spacing subassembly of right unblock is opened right locking Assembly, and the lower extreme of right flashboard is contradicted on the spacing subassembly of right unblock and is compressed tightly in outlet pipe department by the wedge block.
Furthermore, a left inclined plane is arranged on the left side of the wedge-shaped block, and a right inclined plane is arranged on the right side of the wedge-shaped block; the left flashboard is provided with a left second inclined plane matched with the left first inclined plane, and when the inlet pipe is closed by the left flashboard, the left first inclined plane and the left second inclined plane are matched to drive the left flashboard to move leftwards along with the downward movement of the wedge-shaped block; and the right flashboard is provided with a right two inclined planes matched with the right one inclined plane, and when the outlet pipe is closed by the right flashboard, the right one inclined plane and the right two inclined planes are matched to drive the right flashboard to move rightwards along with the downward movement of the wedge-shaped block.
Furthermore, the left locking assembly comprises a left sliding block, a left sliding groove communicated with the left locking groove is formed in the left flashboard along the length direction perpendicular to the left locking groove, the left sliding block is connected in the left sliding groove in a sliding mode, a left locking hole communicated with the left locking groove is formed in the left sliding block along the vertical direction, and a left spring used for forcing the left sliding block to move towards the direction away from the left flashboard is arranged in the left sliding groove; the outer side of the circumference of each left lock rod is provided with a left conical lug; when the left locking assembly locks the left flashboard on the left locking rod, the left conical convex block penetrates through the left locking hole, one end of the left sliding block abuts against the inner side wall of the valve cavity, and the left locking rod is located at the eccentric position of the left locking hole.
Furthermore, the left unlocking limiting assembly comprises a left rotating block, a left cutting groove is formed in the inner side wall of the valve cavity below each left sliding block, a left rotating shaft is arranged in each left cutting groove, and the left rotating block is rotatably connected to the left rotating shaft; the side surface of the upper end of the left rotating block is provided with a left convex block, the side surface of the lower end of the left rotating block is provided with a left hook body, and a left second spring for forcing the lower end of the left rotating block to extend into the valve cavity is arranged below the left rotating shaft in the left cutting groove; when the lower end of the left flashboard is abutted to the left hook body, the left rotating block rotates around the left rotating shaft along with the downward movement of the left flashboard, the left sliding block is pressed into the left sliding groove by the left convex block, and the left lock rod is positioned at the center of the left lock hole.
Furthermore, the right locking assembly comprises a right sliding block, a right sliding groove communicated with the right locking groove is formed in the right flashboard along the length direction perpendicular to the right locking groove, the right sliding block is connected in the right sliding groove in a sliding mode, a right locking hole communicated with the right locking groove is formed in the right sliding block along the vertical direction, and a right spring used for forcing the right sliding block to move in the direction away from the right flashboard is arranged in the right sliding groove; the outer side of the circumference of each right lock rod is provided with a right conical lug; when the right locking assembly locks the right brake plate on the right lock rod, the right conical convex block penetrates through the right lock hole, one end of the right slide block abuts against the inner side wall of the valve cavity, and the right lock rod is located at the eccentric position of the right lock hole.
Furthermore, the right unlocking limiting assembly comprises a right rotating block, a right cutting groove is formed in the inner side wall of the valve cavity below each right sliding block, a right rotating shaft is arranged in each right cutting groove, and the right rotating block is rotatably connected to the right rotating shaft; the side surface of the upper end of the right rotating block is provided with a right bump, the side surface of the lower end of the right rotating block is provided with a right hook body, and a right spring for forcing the lower end of the right rotating block to extend into the valve cavity is arranged below the right rotating shaft in the right cutting groove; when the lower end of the right flashboard is abutted to the right hook body, the right rotating block rotates around the right rotating shaft along with the downward movement of the right flashboard, the right sliding block is pressed into the right sliding groove by the right convex block, and the right lock rod is positioned at the central position of the right lock hole.
Further, valve rod assembly includes the valve rod, the valve rod is equipped with the external screw thread in the circumference outside near the upper end, the upper end of valve gap is equipped with the door shape frame, the external screw thread end threaded connection of valve rod is on the door shape frame, the lower extreme of valve rod passes the valve gap and stretches into the valve intracavity and be connected with the upper end of wedge, the upper end fixed mounting of valve rod has the handle.
Furthermore, an inverted T-shaped groove is formed in the upper end of the wedge-shaped block, and an inverted T-shaped protruding block extending into the inverted T-shaped groove is arranged at the lower end of the valve rod.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. the invention is provided with two left slide blocks in a left flashboard, two right slide blocks in a right flashboard, and a bottom plate of a wedge-shaped block is provided with a left lock rod matched with the left slide blocks and a right lock rod matched with the right slide blocks; when the left flashboard and the right flashboard are completely opened, the left locking holes of the two left sliding blocks of the left flashboard are eccentrically matched with the left locking rod, the left conical convex block is positioned above the left locking hole, so that the bottom plates of the left flashboard and the wedge block are clamped together, the right locking holes of the two right sliding blocks of the right flashboard are eccentrically matched with the right locking rod, the right conical convex block is positioned above the right locking hole, so that the bottom plates of the right flashboard and the wedge block are clamped together, when the control gate valve moves from an opening position to a closing position, relative displacement cannot occur between the left flashboard and the right flashboard and the wedge block, and therefore the left flashboard and the right flashboard cannot stop descending to generate a spreading phenomenon when the left flashboard and the right flashboard;
2. when the left flashboard and the right flashboard are closed downwards to a proper position, the lower end of the left flashboard is abutted against the left hook body, the left rotating block rotates to drive the left convex block to push the left sliding rod into the left sliding groove, so that the left locking rod is positioned at the central position of the left lockhole, similarly, the lower end of the right flashboard is abutted against the right hook body, the right rotating block rotates to drive the right convex block to push the right sliding rod into the right sliding groove, so that the right locking rod is positioned at the central position of the right lockhole, the left flashboard and the right flashboard stop moving downwards at the moment, the handle is continuously rotated, the wedge block can move downwards relative to the left flashboard and the right flashboard, and the left flashboard and the right flashboard are unfolded towards two sides through the matching of the left inclined plane and the right inclined plane and the matching of the right inclined;
3. according to the invention, the left flashboard and the right flashboard are not opened when not closed in place, so that the sealing surface is not scratched, the reliability of the gate valve is improved, and the service life of the gate valve is prolonged.
Drawings
FIG. 1 is a cross-sectional view of the present invention with the gate valve in an open position;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view of the present invention with the left and right shutters moved to a lowermost position;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a cross-sectional view of the present invention with the left and right shutters in the closed position;
FIG. 7 is a cross-sectional view taken along line E-E of FIG. 6;
FIG. 8 is a cross-sectional view of the wedge as it moves upward from the closed position;
fig. 9 is a sectional view taken along line F-F in fig. 8.
Detailed Description
Referring to fig. 1-9, a gate valve includes a valve body 1, a valve cavity 1a is arranged in the valve body 1, an inlet pipe 101 and an outlet pipe 102 which are communicated with the valve cavity 1a are arranged outside the valve body 1, the inlet pipe 101 and the outlet pipe 102 are coaxially arranged, a valve cover 2 is fixedly arranged at an opening at the upper end of the valve cavity 1a of the valve body 1, a wedge block 3 is slidably connected in the valve cavity 1a along a vertical direction, and a bottom plate 31 is arranged at the lower end of the wedge block 3; a left flashboard 41 and a right flashboard 42 which are positioned above the bottom plate 31 are symmetrically arranged at the left side and the right side of the wedge-shaped block 3 in the valve cavity 1a, and a valve rod assembly for driving the wedge-shaped block 3 to move up and down is arranged on the valve cover 2; the lower end of the left flashboard 41 is provided with two left locking grooves 4a in parallel along the vertical direction, and the bottom board 31 is provided with two left locking rods 3a in parallel extending into the left locking grooves 4 a; the lower end of the right flashboard 42 is provided with two right locking grooves 4b in parallel along the vertical direction, and the bottom plate 31 is provided with two right locking rods 3c extending into the right locking grooves 4b in parallel; a left locking assembly is arranged at each left locking groove 4a in the left flashboard 41, and a right locking assembly is arranged at each right locking groove 4b in the right flashboard 42; a left unlocking limiting assembly and a right unlocking limiting assembly are arranged on the side wall of the valve cavity 1a close to the lower end; when the gate valve is opened, the wedge-shaped block 3 is positioned at the upper end of the valve cavity 1a, the left gate plate 41 is locked on the left lock rod 3a through the left locking assembly, and the right gate plate 42 is locked on the right lock rod 3c through the right locking assembly; when the gate valve is closed, the wedge block 3 is located at the lower end of the valve cavity 1a, the left locking assembly is opened by the left unlocking limiting assembly, the lower end of the left gate plate 41 abuts against the left unlocking limiting assembly and is pressed at the inlet pipe 101 by the wedge block 3, the right locking assembly is opened by the right unlocking limiting assembly, and the lower end of the right gate plate 42 abuts against the right unlocking limiting assembly and is pressed at the outlet pipe 102 by the wedge block 3.
The left side of the wedge block 3 is provided with a left inclined plane 32, and the right side of the wedge block is provided with a right inclined plane 33; the left flashboard 41 is provided with a left second inclined plane 411 matched with the left first inclined plane 32, and when the inlet pipe 101 is closed by the left flashboard 41, the left first inclined plane 32 is matched with the left second inclined plane 411 to drive the left flashboard 41 to move leftwards along with the downward movement of the wedge block 3; and a right two inclined planes 421 matched with the right first inclined plane 33 are arranged on the right gate plate 42, and when the outlet pipe 102 is closed by the right gate plate 42, the right first inclined plane 33 is matched with the right two inclined planes 421 to drive the right gate plate 42 to move rightwards along with the downward movement of the wedge-shaped block 3.
The left locking assembly comprises a left sliding block 6, a left sliding groove 4c communicated with the left locking groove 4a is formed in the left flashboard 41 along the length direction perpendicular to the left locking groove 4a, the left sliding block 6 is connected in the left sliding groove 4c in a sliding mode, a left locking hole 61 communicated with the left locking groove 4a is formed in the left sliding block 6 along the vertical direction, and a left spring 62 used for forcing the left sliding block 6 to move in the direction away from the left flashboard 41 is arranged in the left sliding groove 4 c; the outer side of the circumference of each left lock rod 3a is provided with a left conical convex block 3 b; when the left locking component locks the left gate plate 41 on the left locking rod 3a, the left conical convex block 3b passes through the left locking hole 61, one end of the left slider 6 abuts against the inner side wall of the valve cavity 1a, and the left locking rod 3a is located at an eccentric position of the left locking hole 61. The left unlocking limiting assembly comprises a left rotating block 7, a left cutting groove 1b is formed in the inner side wall of the valve cavity 1a below each left sliding block 6, a left rotating shaft 74 is arranged in each left cutting groove 1b, and the left rotating block 7 is rotatably connected to the left rotating shaft 74; the side surface of the upper end of the left rotating block 7 is provided with a left convex block 71, the side surface of the lower end of the left rotating block 7 is provided with a left hook body 72, and a left second spring 73 for forcing the lower end of the left rotating block 7 to extend into the valve cavity 1a is arranged below the left rotating shaft 74 in the left cutting groove 1 b; when the lower end of the left shutter plate 41 abuts against the left hook 72, the left rotating block 7 rotates around the left rotating shaft 74 as the left shutter plate 41 moves downward, the left protrusion 71 presses the left slider 6 into the left slide groove 4c, and the left lock lever 3a is located at the center of the left lock hole 61.
The right locking assembly comprises a right sliding block 8, a right sliding groove 4d communicated with the right locking groove 4b is formed in the right flashboard 42 along the length direction perpendicular to the right locking groove 4b, the right sliding block 8 is connected in the right sliding groove 4d in a sliding mode, a right locking hole 81 communicated with the right locking groove 4b is formed in the right sliding block 8 along the vertical direction, and a right spring 82 used for forcing the right sliding block 8 to move in the direction away from the right flashboard 42 is arranged in the right sliding groove 4 d; the outer side of the circumference of each right lock rod 3c is provided with a right conical convex block 3 d; when the right locking component locks the right gate plate 42 on the right locking rod 3c, the right tapered convex block 3d passes through the right locking hole 81, one end of the right sliding block 8 abuts against the inner side wall of the valve cavity 1a, and the right locking rod 3c is located at an eccentric position of the right locking hole 81. The right unlocking limiting assembly comprises a right rotating block 9, a right cutting groove 1c is formed in the inner side wall of the valve cavity 1a below each right sliding block 8, a right rotating shaft 94 is arranged in each right cutting groove 1c, and the right rotating block 9 is rotatably connected to the right rotating shaft 94; the side surface of the upper end of the right rotating block 9 is provided with a right bump 91, the side surface of the lower end of the right rotating block is provided with a right hook body 92, and a right second spring 93 for forcing the lower end of the right rotating block 9 to extend into the valve cavity 1a is arranged below a right rotating shaft 94 in the right cutting groove 1 c; when the lower end of the right shutter plate 42 abuts against the right hook 92, the right turning block 9 rotates around the right turning shaft 94 as the right shutter plate 42 moves downward, the right protrusion 91 presses the right slider 8 into the right slide groove 4d, and the right lock lever 3c is located at the center of the right lock hole 81.
The valve rod assembly comprises a valve rod 5, the valve rod 5 is provided with external threads 51 on the outer side of the circumference close to the upper end, the upper end of the valve cover 2 is provided with a portal frame 21, the external threads 51 of the valve rod 5 are in threaded connection with the portal frame 21, the lower end of the valve rod 5 penetrates through the valve cover 2 to stretch into the valve cavity 1a and is connected with the upper end of the wedge block 3, and the upper end of the valve rod 5 is fixedly provided with a handle 52. The upper end of the wedge-shaped block 3 is provided with an inverted T-shaped groove 34, and the lower end of the valve rod 5 is provided with an inverted T-shaped projection 53 extending into the inverted T-shaped groove 34.
When the left flashboard 41 and the right flashboard 42 are completely opened, the left conical convex block 3b penetrates through the left lock hole 61, one end of the left sliding block 6 is abutted to the inner side wall of the valve cavity 1a, the left lock rod 3a is positioned at the eccentric position of the left lock hole 61, and the left lock assembly locks the left flashboard 41 on the left lock rod 3 a; similarly, the right tapered protruding block 3d passes through the right locking hole 81, one end of the right slider 8 abuts against the inner side wall of the valve cavity 1a, the right locking rod 3c is located at an eccentric position of the right locking hole 81, the right locking assembly locks the right gate plate 42 on the right locking rod 3c, when the control gate valve moves from an opening position to a closing position, the left gate plate 41 and the right gate plate 42 are clamped with the wedge-shaped block 3 together, relative displacement cannot occur, and therefore the left gate plate 41 and the right gate plate 42 cannot stop descending and generate a spreading phenomenon when not being closed in place.
When the gate valve is closed, the rotary handle 52 drives the valve rod 5 to rotate, the valve rod 5 drives the wedge block 3 to move downwards when rotating, the wedge block 3 drives the left gate plate 41 and the right gate plate 42 to move downwards, when the lower end of the left gate plate 41 abuts against the left hook body 72, the left rotating block 7 rotates around the left rotating shaft 74 along with the downward movement of the left gate plate 41, the left lug 71 presses the left sliding block 6 into the left sliding groove 4c, the left lock rod 3a is located at the central position of the left lock hole 61, similarly, when the lower end of the right gate plate 42 abuts against the right hook body 92, the right rotating block 9 rotates around the right rotating shaft 94 along with the downward movement of the right gate plate 42, the right lug 91 presses the right sliding block 8 into the right sliding groove 4d, and the right lock rod 3c is located at the central position of the right; at this time, the left shutter 41 is moved downward by the left hook 72, and the right shutter 42 is stopped by the right hook 92. The wedge-shaped block 3 is moved downwards relative to the left shutter plate 41 and the right shutter plate 42 by continuing to rotate the handle 52, so that the left shutter plate 41 and the right shutter plate 42 are spread towards two sides through the matching of the left first inclined surface 32 and the left second inclined surface 411 and the matching of the right first inclined surface 33 and the right second inclined surface 421, the left shutter plate 41 is pressed on the inlet pipe 101, and the right shutter plate 42 is pressed on the outlet pipe 102, so that reliable sealing is realized.
When the gate valve is opened from the closed position, the handle 52 is rotated reversely, the wedge block 3 is driven to move upwards through the valve rod 5, the left lock rod 3a drives the left conical block to pass through the left lock hole 61, the right lock rod 3c drives the right conical block to pass through the right lock hole 81, the wedge block 3 continues to move upwards, the bottom plate 31 is in contact with the left flashboard 41 and the right flashboard 42 to drive the left flashboard 41 and the right flashboard 42 to move upwards, the left rotating block 7 is reset under the action of the left second spring 73, and the right rotating block 9 is reset under the action of the right second spring 93. The left slider 6 abuts against the side wall of the valve cavity 1a under the action of the left spring 62, the left lock rod 3a is positioned at the eccentric position of the left lock hole 61, the right slider 8 abuts against the side wall of the valve cavity 1a under the action of the right spring 82, and the right lock rod 3c is positioned at the eccentric position of the right lock hole 81. Thereby completing the opening of the gate valve.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A gate valve comprises a valve body, wherein a valve cavity is arranged in the valve body, an inlet pipe and an outlet pipe which are communicated with the valve cavity are arranged on the outer side of the valve body, the inlet pipe and the outlet pipe are coaxially arranged, a valve cover is fixedly arranged at an opening at the upper end of the valve cavity of the valve body, the gate valve is characterized in that a wedge block is connected in the valve cavity in a sliding mode along the vertical direction, and a bottom plate is arranged at the lower end of the wedge block; a left flashboard and a right flashboard which are positioned above the bottom plate are symmetrically arranged on the left side and the right side of the wedge-shaped block in the valve cavity, and a valve rod assembly for driving the wedge-shaped block to move up and down is arranged on the valve cover; the lower end of the left flashboard is provided with two left locking grooves in parallel along the vertical direction, and the bottom board is provided with two left locking rods extending into the left locking grooves in parallel; the lower end of the right flashboard is provided with two right locking grooves in parallel along the vertical direction, and the bottom board is provided with two right locking rods extending into the right locking grooves in parallel; a left locking assembly is arranged at each left locking groove in the left flashboard, and a right locking assembly is arranged at each right locking groove in the right flashboard; a left unlocking limiting assembly and a right unlocking limiting assembly are arranged on the side wall, close to the lower end, in the valve cavity; when the gate valve is opened, the wedge block is positioned at the upper end of the valve cavity, the left gate plate is locked on the left lock rod through the left locking assembly, and the right gate plate is locked on the right lock rod through the right locking assembly; when the gate valve is closed, the wedge block is located the lower extreme of valve pocket, and left locking Assembly is opened to the spacing subassembly of left unblock, and the lower extreme of left flashboard is contradicted on the spacing subassembly of left unblock and is compressed tightly in import pipe department by the wedge block, and the spacing subassembly of right unblock is opened right locking Assembly, and the lower extreme of right flashboard is contradicted on the spacing subassembly of right unblock and is compressed tightly in outlet pipe department by the wedge block.
2. The gate valve of claim 1, wherein the wedge block is provided with a left inclined surface on the left side and a right inclined surface on the right side; the left flashboard is provided with a left second inclined plane matched with the left first inclined plane, and when the inlet pipe is closed by the left flashboard, the left first inclined plane and the left second inclined plane are matched to drive the left flashboard to move leftwards along with the downward movement of the wedge-shaped block; and the right flashboard is provided with a right two inclined planes matched with the right one inclined plane, and when the outlet pipe is closed by the right flashboard, the right one inclined plane and the right two inclined planes are matched to drive the right flashboard to move rightwards along with the downward movement of the wedge-shaped block.
3. The gate valve of claim 1, wherein the left locking assembly comprises a left slider, a left sliding groove communicated with the left locking groove is formed in the left gate plate along a length direction perpendicular to the left locking groove, the left slider is slidably connected in the left sliding groove, a left locking hole communicated with the left locking groove is formed in the left slider along a vertical direction, and a left spring for forcing the left slider to move away from the left gate plate is arranged in the left sliding groove; the outer side of the circumference of each left lock rod is provided with a left conical lug; when the left locking assembly locks the left flashboard on the left locking rod, the left conical convex block penetrates through the left locking hole, one end of the left sliding block abuts against the inner side wall of the valve cavity, and the left locking rod is located at the eccentric position of the left locking hole.
4. The gate valve of claim 3, wherein the left unlocking limiting assembly comprises a left rotating block, a left cutting groove is formed in the inner side wall of the valve cavity below each left sliding block, a left rotating shaft is arranged in each left cutting groove, and the left rotating block is rotatably connected to the left rotating shaft; the side surface of the upper end of the left rotating block is provided with a left convex block, the side surface of the lower end of the left rotating block is provided with a left hook body, and a left second spring for forcing the lower end of the left rotating block to extend into the valve cavity is arranged below the left rotating shaft in the left cutting groove; when the lower end of the left flashboard is abutted to the left hook body, the left rotating block rotates around the left rotating shaft along with the downward movement of the left flashboard, the left sliding block is pressed into the left sliding groove by the left convex block, and the left lock rod is positioned at the center of the left lock hole.
5. The gate valve of claim 1, wherein the right locking assembly comprises a right slider, a right chute communicated with the right chute is arranged in the right gate plate along a length direction perpendicular to the right chute, the right slider is slidably connected in the right chute, a right locking hole communicated with the right chute is arranged in the right slider along a vertical direction, and a right spring for forcing the right slider to move away from the right gate plate is arranged in the right chute; the outer side of the circumference of each right lock rod is provided with a right conical lug; when the right locking assembly locks the right brake plate on the right lock rod, the right conical convex block penetrates through the right lock hole, one end of the right slide block abuts against the inner side wall of the valve cavity, and the right lock rod is located at the eccentric position of the right lock hole.
6. The gate valve of claim 5, wherein the right unlocking limiting assembly comprises a right turning block, a right slot is formed in the inner side wall of the valve cavity below each right sliding block, a right rotating shaft is arranged in each right slot, and the right turning block is rotatably connected to the right rotating shaft; the side surface of the upper end of the right rotating block is provided with a right bump, the side surface of the lower end of the right rotating block is provided with a right hook body, and a right spring for forcing the lower end of the right rotating block to extend into the valve cavity is arranged below the right rotating shaft in the right cutting groove; when the lower end of the right flashboard is abutted to the right hook body, the right rotating block rotates around the right rotating shaft along with the downward movement of the right flashboard, the right sliding block is pressed into the right sliding groove by the right convex block, and the right lock rod is positioned at the central position of the right lock hole.
7. The gate valve of claim 1, wherein the valve stem assembly comprises a valve stem, the valve stem is provided with external threads on the outer side of the circumference near the upper end, the upper end of the valve cap is provided with a portal frame, the external thread end of the valve stem is connected to the portal frame in a threaded manner, the lower end of the valve stem penetrates through the valve cap to extend into the valve cavity and is connected with the upper end of the wedge block, and the upper end of the valve stem is fixedly provided with a handle.
8. The gate valve of claim 1, wherein the wedge block has an inverted T-shaped groove at an upper end thereof, and the valve stem has an inverted T-shaped projection at a lower end thereof, the inverted T-shaped projection extending into the inverted T-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010942847.7A CN112049954A (en) | 2020-09-09 | 2020-09-09 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010942847.7A CN112049954A (en) | 2020-09-09 | 2020-09-09 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112049954A true CN112049954A (en) | 2020-12-08 |
Family
ID=73610904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010942847.7A Pending CN112049954A (en) | 2020-09-09 | 2020-09-09 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112049954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339536A (en) * | 2021-05-24 | 2021-09-03 | 宁波凯拓阀门有限公司 | Hand wheel type gas valve for gas transportation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162057A (en) * | 1978-04-05 | 1979-07-24 | Aerojet-General Corporation | Linear retractable seal valve |
| CN201363433Y (en) * | 2009-01-21 | 2009-12-16 | 河南开封高压阀门有限公司 | Reverse-wedge expansion double disc parallel gate valve |
| CN204127352U (en) * | 2014-10-23 | 2015-01-28 | 王左一 | High temperature low moment of torsion middle high-pressure gate valve |
| US20170299069A1 (en) * | 2016-04-19 | 2017-10-19 | Pentair Flow Services Ag | Gate Supports for a Gate Valve |
| CN207092745U (en) * | 2017-07-15 | 2018-03-13 | 深圳市金丰盛塑胶制品有限公司 | A kind of lock catch connecting device being used in LED box |
| CN209996447U (en) * | 2019-03-28 | 2020-01-31 | 四川省肿瘤医院 | A sample takes out external member for laparoscopic surgery |
| CN111197660A (en) * | 2020-01-20 | 2020-05-26 | 陈少同 | Gate valve |
-
2020
- 2020-09-09 CN CN202010942847.7A patent/CN112049954A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162057A (en) * | 1978-04-05 | 1979-07-24 | Aerojet-General Corporation | Linear retractable seal valve |
| CN201363433Y (en) * | 2009-01-21 | 2009-12-16 | 河南开封高压阀门有限公司 | Reverse-wedge expansion double disc parallel gate valve |
| CN204127352U (en) * | 2014-10-23 | 2015-01-28 | 王左一 | High temperature low moment of torsion middle high-pressure gate valve |
| US20170299069A1 (en) * | 2016-04-19 | 2017-10-19 | Pentair Flow Services Ag | Gate Supports for a Gate Valve |
| CN207092745U (en) * | 2017-07-15 | 2018-03-13 | 深圳市金丰盛塑胶制品有限公司 | A kind of lock catch connecting device being used in LED box |
| CN209996447U (en) * | 2019-03-28 | 2020-01-31 | 四川省肿瘤医院 | A sample takes out external member for laparoscopic surgery |
| CN111197660A (en) * | 2020-01-20 | 2020-05-26 | 陈少同 | Gate valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339536A (en) * | 2021-05-24 | 2021-09-03 | 宁波凯拓阀门有限公司 | Hand wheel type gas valve for gas transportation |
| CN113339536B (en) * | 2021-05-24 | 2022-05-27 | 宁波凯拓阀门有限公司 | Hand wheel type gas valve for gas transportation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI722441B (en) | Combined hinge and hydraulic device | |
| WO2017125075A1 (en) | Valve | |
| US4289165A (en) | Equalizing ball valve member | |
| CN110499984B (en) | Dabber and device have universal hydraulic hinge of violence prevention of this dabber | |
| CN112049954A (en) | Gate valve | |
| CN111173951B (en) | Gate valve | |
| CN206987769U (en) | A kind of flashboard locking device for preventer | |
| CN213271297U (en) | Gate valve capable of effectively preventing hand wheel from being touched by mistake | |
| CN111473154B (en) | Butterfly valve | |
| CN106594331A (en) | Plate type non-return valve capable of being reliably sealed | |
| US1824217A (en) | Door hinge | |
| US5370155A (en) | Wedge-type gate valve | |
| KR20180000280U (en) | Stopper for valve | |
| CN205078820U (en) | Plug valve | |
| CN110805727B (en) | Safety valve | |
| KR20070120931A (en) | Vertical doorcloser having stop function | |
| CN111237483A (en) | Butterfly valve | |
| CN112524329A (en) | Novel valve driving device | |
| CN220268512U (en) | Stop valve with non-return function | |
| CN112081937B (en) | Gate valve | |
| CN206398135U (en) | Reliable sealedly plate check valve | |
| CN205841828U (en) | A kind of parallel sliding gate valve | |
| CN112066020A (en) | Double-gate valve | |
| CN220286539U (en) | Valve rod assembly and stop valve | |
| CN218598849U (en) | High-temperature high-pressure adjusting gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |