CN115451147A - Valve with good sealing performance - Google Patents
Valve with good sealing performance Download PDFInfo
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- CN115451147A CN115451147A CN202211087462.2A CN202211087462A CN115451147A CN 115451147 A CN115451147 A CN 115451147A CN 202211087462 A CN202211087462 A CN 202211087462A CN 115451147 A CN115451147 A CN 115451147A
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- valve
- fixed block
- valve rod
- block
- rotating
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- 238000007789 sealing Methods 0.000 title claims description 48
- 229910001220 stainless steel Inorganic materials 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000010935 stainless steel Substances 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 14
- 239000012530 fluid Substances 0.000 description 13
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
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- 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
- F16K41/00—Spindle sealings
- F16K41/003—Spindle sealings by fluid
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- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The application provides a valve that leakproofness is good, relate to valve technical field, it includes the fixed block, rotatory piece, the tractive spare, fixed block and valve body fixed connection, the inside of fixed block is equipped with inclosed activity chamber, the one end that the valve was kept away from to the valve rod is located activity intracavity portion, the valve rod rotates with the fixed block to be connected, rotatory piece is located the fixed block outside, rotatory piece rotates with the fixed block to be connected, the tractive spare sets up to long and thin structure, the one end and the valve rod of tractive spare are connected, the other end and the rotatory piece of tractive spare are connected, can drive the relative valve body of valve rod rotatory through the tractive spare when rotatory relative fixed block of rotatory piece is rotatory, the fitting surface of valve rod and valve body forms first seal structure, the fitting surface of valve rod and fixed block forms second seal structure, the fitting surface of tractive spare and fixed block forms third seal structure, the fitting surface of rotatory piece and fixed block forms fourth seal structure. The technical problem of leakage easily occurs in the fit clearance between the valve rod and the valve body in the prior art is solved.
Description
Technical Field
The application relates to the technical field of valves, especially, relate to a valve that leakproofness is good.
Background
The valve is a device for controlling fluid flow, and the water pipe valve usually comprises a valve body, a valve and a valve rod, wherein the valve rod is connected with the valve body in a rotating manner, the valve is arranged inside the valve body and fixedly connected with the valve rod, and the valve rod drives the valve to rotate inside the valve body to adjust the flow area of a passage inside the valve body so as to control the flow of fluid passing through the valve body.
However, one end of the valve rod in the prior art extends out of the valve body, the other end of the valve rod is located inside the valve body, the valve rod and the valve body are sealed in a tight fit mode, the matching surface is abraded or corroded to increase the matching clearance after long-term use, the water pressure inside the valve body is large in the working process, and the clearance between the valve rod and the valve body is easy to leak.
Disclosure of Invention
The application provides a valve that leakproofness is good for the technical problem who leaks takes place easily in the fit clearance between valve rod and the valve body among the solution prior art.
In the embodiment of this application, a valve that leakproofness is good is provided, including valve body, valve rod and valve, the valve is located inside the valve body, the one end of valve rod with valve fixed connection, the valve rod with the valve body rotates to be connected, the valve rod other end is located outside the valve body, still includes sealed drive assembly, sealed drive assembly includes fixed block, rotatory piece, tractive spare, the fixed block with valve body fixed connection, the inside of fixed block is equipped with inclosed movable chamber, the valve rod is kept away from the one end of valve is located movable intracavity portion, the valve rod with the fixed block rotates to be connected, rotatory piece is located the fixed block is outside, rotatory piece with the fixed block rotates to be connected, tractive spare sets up to long and thin structure, the one end of tractive spare with the valve rod is connected, the other end of tractive spare with rotatory piece is connected, rotatory piece is relative the fixed block can pass through when rotatory the fixed block drive the valve rod is relative the valve rod is rotatory, the fitting surface with the fitting surface of valve body forms first seal structure, the valve rod with the fixed block forms the second fitting surface, the tractive spare with the third fitting surface of fixed block forms the seal structure the rotatory piece and the fourth fitting surface of seal structure.
In some embodiments of this application embodiment, the shape of fixed block is cylindrical, the shape of rotatory piece is the cylinder, rotatory piece cover is located on the fixed block, the tractive spare is kept away from the one end of valve rod with the medial surface fixed connection of rotatory piece, the lateral surface of fixed block with the medial surface sliding fit of rotatory piece.
In some embodiments of this application embodiment, the lateral surface of fixed block is equipped with annular guide way, the medial surface fixedly connected with annular guide block of rotatory piece, annular guide block is located inside the annular guide way, annular guide block with annular guide way sliding fit.
In some embodiments of this application embodiment, the medial surface of rotatory piece is equipped with the annular and dodges the groove, the tractive spare is close to the one end of rotatory piece is located the annular dodges inside the groove.
In some embodiments of this application embodiment, be equipped with the curvilinear figure guide way on the fixed block, the one end of curvilinear figure guide way with the groove intercommunication is dodged to the annular, the other end of curvilinear figure guide way with movable chamber intercommunication, the position embedding between the both ends of tractive spare is in inside the curvilinear figure guide way, the lateral surface of tractive spare with the inner wall sliding fit of curvilinear figure guide way.
In some embodiments of this application embodiment, activity intracavity portion is equipped with two swinging boom, the swinging boom with valve rod fixed connection, two the swinging boom winds angle circumference array such as the axis of valve rod distributes, activity intracavity portion is equipped with two spacing portions, spacing portion protrusion the medial surface in activity chamber forms spacing face, the swinging boom winds the central axis court of valve rod can with spacing face butt during spacing face is rotatory, the tractive spare has two, two the tractive spare respectively with two the swinging boom orientation the one side fixed connection of spacing face, the curvilinear figure guide way has two, and the position between two the both ends of tractive spare is embedded in two respectively in the curvilinear figure guide way, two tractive spare, two curvilinear figure guide way, two spacing portion winds respectively angle circumference array such as the axis of valve rod distributes.
In some embodiments of this application embodiment, the shape of curvilinear figure guide slot is the quarter ellipse, the tractive spare is in the swinging arm with position between the spacing face becomes circular-arcly, the tractive spare is in position in the curvilinear figure guide slot becomes the quarter ellipse, the tractive spare is in position in the annular guide slot becomes circular-arcly, two sections circular arc positions of tractive spare are tangent with the quarter ellipse position respectively.
In some embodiments of the examples herein, the pull member is a stainless steel wire.
In some embodiments of the embodiment of the present application, the pulling member is a stainless steel sheet, a surface of the stainless steel sheet is parallel to a central axis of the valve rod, a fixed groove is formed in an inner wall of the movable cavity, the fixed groove is arc-shaped, the fixed groove is tangent to and communicated with the curved guide groove, and two sides of the stainless steel sheet are respectively inserted into the fixed groove.
In some embodiments of the embodiment of the present application, the sealing transmission assemblies are provided in two sets, each of the sealing transmission assemblies is respectively disposed on two sides of the valve body, the valve rods of the two sealing transmission assemblies are located on the same straight line, and the rotating directions of the rotating blocks of the two sealing transmission assemblies pull the pulling member are opposite.
The application has the following beneficial effects:
the transmission is realized between the rotating block and the valve rod through the slender traction piece, and the cross-sectional area of a gap between the traction piece and the fixing piece is very small, so that the resistance of fluid flowing in the gap is relatively large, even if the fluid in the valve body enters the movable cavity through the first sealing structure and the second sealing structure, the fluid in the movable cavity is difficult to drive the fluid in the movable cavity to form leakage through the third sealing structure, and in addition, the fluid in the movable cavity is also sealed by the fourth sealing structure through the third sealing structure, so that the leakage is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a valve with good sealing performance in the embodiment of the present application;
FIG. 2 is a top view of a valve with good sealing performance according to an embodiment of the present application;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is a schematic view of the internal structure of the fixing block in the embodiment of the present application;
FIG. 6 is a schematic structural view of a movable chamber in an embodiment of the present application;
FIG. 7 is a view showing the structure of the annular guide groove in the embodiment of the present application;
FIG. 8 is a schematic structural diagram of a rotary block in an embodiment of the present application;
fig. 9 is a schematic diagram of the profile shape of the inner side surface of the movable chamber in the embodiment of the application.
Reference numerals are as follows:
101. a valve body; 102. a valve stem; 103. a valve; 104. a fixed block; 105. rotating the block; 106. a pulling member; 107. an annular guide groove; 108. an annular guide block; 109. an annular avoidance groove; 110. a curved guide groove; 111. a limiting part; 112. a limiting surface; 113. a movable cavity; 114. a rotating arm; 115. and (6) shaping the groove.
Detailed Description
Embodiments of the present application are described in further detail below with reference to the figures and examples, and the terminology used in the description of the embodiments of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.
As shown in fig. 1 to 4, in an embodiment of the present application, a valve with good sealing performance is provided, including a valve body 101, a valve rod 102, and a valve 103, where the valve 103 is disposed inside the valve body 101, one end of the valve rod 102 is fixedly connected to the valve 103, the valve rod 102 is rotatably connected to the valve body 101, and the other end of the valve rod 102 is located outside the valve body 101, the valve further includes a sealing transmission assembly, where the sealing transmission assembly includes a fixed block 104, a rotating block 105, and a pulling member 106, the fixed block 104 is fixedly connected to the valve body 101, a sealed movable cavity 113 is disposed inside the fixed block 104, one end of the valve rod 102, which is far away from the valve 103, is located inside the movable cavity 113, the valve rod 102 is rotatably connected to the fixed block 104, the rotating block 105 is located outside the fixed block 104, the rotating block 105 is rotatably connected to the fixed block 104, the pulling member 106 is configured as an elongated structure, one end of the pulling member 106 is connected to the valve rod 102, and the other end of the pulling member 106 is connected to the fixed block 105, and the rotating block 104 can drive the valve rod 102 to form a third sealing surface, and the sealing surface, where the third sealing structure is formed by the rotating block 104 and the sealing surface of the fixed block 104.
Through the above embodiment of the present embodiment, the valve 103 is a ball valve 103, the pulling member 106 is configured as an elongated filament-like or elongated thin-sheet structure, the rotation block 105 and the valve rod 102 are driven by the elongated pulling member 106, the pulling member 106 penetrates through the fixed block 104, the pulling member 106 and the fixed block 104 are tightly fitted (form a third sealing structure) and can slide relatively, because the cross-sectional area of the gap between the pulling member 106 and the fixed block is small, the resistance to the flow of the fluid in the gap is large, even if the fluid inside the valve body 101 enters the movable cavity 113 through the first sealing structure and the second sealing structure, the hydraulic pressure of the fluid inside the movable cavity 113 is difficult to drive the fluid inside the movable cavity 113 to be configured to leak through the third sealing structure, and even if the fluid inside the movable cavity 113 passes through the third sealing structure, the fourth sealing structure also seals the fluid, which is beneficial to avoiding leakage, compared with the prior art that the sealing is performed by the fitting between the valve rod 102 and the valve body 101, the overall sealing effect is improved. Preferably, in the third sealing structure, grease is applied to the matching surface for lubrication, so that friction between the pulling piece 106 and the fixing block 104 is reduced, damage of corrosion to the third sealing structure is reduced, and the sealing effect is improved. And lubrication and sealing effect improvement can be realized by smearing grease on the matching surfaces of the first sealing structure, the second sealing structure and the fourth sealing structure.
In some embodiments of this embodiment, the fixed block 104 is cylindrical, the rotating block 105 is sleeved on the fixed block 104, one end of the pulling member 106 far away from the valve rod 102 is fixedly connected with the inner side surface of the rotating block 105, and the outer side surface of the fixed block 104 is in sliding fit with the inner side surface of the rotating block 105.
With the above-described embodiment of the present embodiment, the outer side surface of the fixed block 104 is tightly fitted with the inner side surface of the rotating block 105 and can slide relative to the inner side surface to form a fourth sealing structure.
As shown in fig. 8, in some embodiments of the present invention, an annular guide groove 107 is formed on an outer side surface of the fixed block 104, an annular guide block 108 is fixedly connected to an inner side surface of the rotating block 105, the annular guide block 108 is located inside the annular guide groove 107, and the annular guide block 108 is in sliding fit with the annular guide groove 107.
With the above-described embodiment of the present embodiment, the annular guide block 108 cooperates with the annular guide groove 107 to restrict the relative movement of the rotary block 105 and the fixed block 104 in the axial direction.
As shown in fig. 7 and 8, in some embodiments of the present embodiment, an annular avoiding groove 109 is formed on an inner side surface of the rotation block 105, and one end of the pulling member 106 close to the rotation block 105 is located inside the annular avoiding groove 109.
Through the above embodiment of this embodiment, when the rotating block 105 rotates relative to the fixed block 104, the pulling member 106 is gradually pulled out from the inside of the fixed block 104, and the annular avoiding groove 109 provides an accommodating space for the pulling member 106, so as to avoid the pulling member 106 from being blocked.
In some embodiments of this embodiment, be equipped with curvilinear figure guide way 110 on the fixed block 104, the one end of curvilinear figure guide way 110 with the annular dodges groove 109 and communicates, the other end of curvilinear figure guide way 110 with activity chamber 113 communicates, the position embedding between the both ends of tractive spare 106 is in inside curvilinear figure guide way 110, the lateral surface of tractive spare 106 with the inner wall sliding fit of curvilinear figure guide way 110.
Through the above embodiment of this embodiment, the curved guide groove 110 is tangentially arranged at the communication position with the annular avoiding groove 109, the pulling member 106 can more smoothly slide into the annular avoiding groove 109 from the curved guide groove 110, or slide into the curved guide groove 110 from the annular avoiding groove 109, the resistance received by the pulling member 106 during the movement process is reduced, the local bending deformation of the pulling member 106 is reduced, the local stress of the pulling member 106 is reduced, thereby the damage to the local part of the pulling member 106 due to bending is reduced, and the friction between the pulling member 106 and the fixed block 104 is reduced due to the lubricating effect of grease.
In some embodiments of this embodiment, the inside two swinging boom 114 that are equipped with of activity chamber 113, swinging boom 114 with valve rod 102 fixed connection, two swinging boom 114 winds the equiangular circumference array distribution of the axis of valve rod 102, activity chamber 113 is inside to be equipped with two spacing portions 111, spacing portion 111 protrusion the medial surface of activity chamber 113 forms spacing face 112, swinging boom 114 winds the central axis court of valve rod 102 can with spacing face 112 butt when spacing face 112 is rotatory, tractive piece 106 has two, two tractive piece 106 respectively with two swinging boom 114 orientation spacing face 112 one side fixed connection, curvilinear shape guide slot 110 has two, and the position between the both ends of two tractive piece 106 is embedded in two respectively in curvilinear shape guide slot 110, two tractive piece 106, two curvilinear shape guide slot 110, two spacing portion 111 winds respectively the equiangular circumference array distribution of the axis of valve rod 102.
With reference to fig. 9, in the above embodiment of this embodiment, the movable cavity 113 is formed by combining an elliptical cavity and a circular cavity, the center of the elliptical cavity and the center of the circular cavity are overlapped, the length of the major axis of the elliptical cavity is equal to the diameter of the circular cavity, the circular cavity is divided into two circular arcs with central angles of 90 degrees, the elliptical cavity is divided into two elliptical arcs with central angles of 90 degrees, the starting point angle of the first circular arc (e.g., a in fig. 9) of the circular cavity is 0 degree and the ending point angle is 90 degrees, the starting point angle of the first elliptical arc (e.g., b in fig. 9) of the ellipse is 90 degrees and the ending point angle of the first circular arc is 180 degrees, the first circular arc and the first elliptical arc are tangent to each other at the central angle of 90 degrees, the starting point angle of the second circular arc (e.g., c in fig. 9) is 180 degrees and the ending point angle of the second elliptical arc is 360 degrees, the starting point of the second circular arc and the second circular arc (e.g., d in fig. 9) are tangent to each other at the central angle of 270 degrees, and the starting point of the first circular arc and the second arc are connected to form a straight line 112 connecting the first limiting surface. The rotating arm 114 is set to be a quarter ellipse block structure matched with the ellipse cavity, the quarter ellipse cavity is just filled when the rotating arm 114 is at the initial position, the corresponding valve 103 is in a completely closed state at the moment, the rotating arm 114 is abutted with the limiting surface 112 after rotating towards the limiting surface 112 for 90 degrees to limit the further rotation of the rotating arm 114, and the corresponding valve 103 is in a completely opened state at the moment.
In some embodiments of this embodiment, the curved guide groove 110 is a quarter ellipse, the portion of the pulling member 106 between the rotating arm 114 and the limiting surface 112 is arc-shaped, the portion of the pulling member 106 in the curved guide groove 110 is a quarter ellipse, the portion of the pulling member 106 in the annular guide groove 107 is arc-shaped, and the two arc portions of the pulling member 106 are tangent to the quarter ellipse respectively.
In some embodiments of this embodiment, the pull 106 is a stainless steel wire.
With the above embodiment of this embodiment, when the pulling member 106 is configured as a stainless steel wire, the diameter of the stainless steel wire is set to 0.15-0.25 mm, and the slender stainless steel wire has good flexibility and corrosion resistance, so as to reduce the cross-sectional area of the curved guide groove 110, reduce the cross-sectional area of the gap between the pulling member 106 and the inner wall of the curved guide groove 110, and improve the sealing effect.
As shown in fig. 5 and 6, in some embodiments of the present embodiment, the pulling member 106 is a stainless steel sheet, a surface of the stainless steel sheet is parallel to a central axis of the valve rod 102, a fixed groove 115 is disposed on an inner wall of the movable cavity 113, the fixed groove 115 is in an arc shape, the fixed groove 115 is tangent to and communicated with the curved guide groove 110, and two sides of the stainless steel sheet are respectively inserted into the fixed groove 115.
With the above embodiment of the present embodiment, when the pulling member 106 is made of an elongated stainless steel sheet, the thickness of the stainless steel sheet is set to 0.1 to 0.2 mm, and the width of the stainless steel sheet is set to 1 to 1.5 mm; through the setting of shaping groove 115, can carry out the design direction to the stainless steel sheet in the circular cavity, make the stainless steel sheet in the circular cavity become arc and this arc center and the center coincidence of circular cavity, the stainless steel sheet motion path is more level and smooth, helps avoiding tractive piece 106 because of local not tangent bending damage that leads to.
In some embodiments of this embodiment, there are two sets of the seal transmission assemblies, each set is disposed on two sides of the valve body 101, the valve rods 102 of the two seal transmission assemblies are located on the same straight line, and the rotation directions of the rotation blocks 105 of the two seal transmission assemblies are opposite in the process of pulling the pulling member 106.
Through the above embodiment of this embodiment, the rotating block 105 can push the pulling member 106 to move when rotating reversely, so as to push the rotating arm 114 to drive the valve rod 102 to rotate, but the acting force generated by the pushing force to drive the pulling member 106 is limited, and only when the pulling member 106 is made of stainless steel and combined with the fixed groove 115, a certain effect is achieved, so that the embodiment adopts two sealed transmission assemblies, the pulling directions of the pulling members 106 in the two sealed transmission assemblies are opposite, the rotating block 105 of one sealed transmission assembly is rotated, and after the pulling valve 103 is opened by the driving member 106, the rotating block 105 of the other sealed transmission assembly is rotated to drive the pulling member 106 to pull the valve 103 to close, and the operation is more stable and labor-saving (the resistance is smaller when the pulling member 106 pushes the valve rod 102 to rotate).
The above examples are only for explaining the present application and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments of the present application without inventive contribution as needed after reading the present specification, but are protected by patent laws within the scope of the claims of the present application.
Claims (10)
1. The utility model provides a valve that leakproofness is good, includes valve body, valve rod and valve, the valve is located inside the valve body, the one end of valve rod with valve fixed connection, the valve rod with the valve body rotates to be connected, the valve rod other end is located outside the valve body, its characterized in that still includes sealed drive assembly, sealed drive assembly includes fixed block, rotatory piece, tractive piece, the fixed block with valve body fixed connection, the inside of fixed block is equipped with inclosed movable chamber, the valve rod is kept away from the one end of valve is located movable intracavity portion, the valve rod with the fixed block rotates to be connected, rotatory piece is located the fixed block is outside, rotatory piece with the fixed block rotates to be connected, tractive piece sets up to the structure, the one end of tractive piece with the valve rod is connected, the other end of tractive piece with rotatory piece is connected, rotatory piece is relative the fixed block can pass through when rotatory the tractive piece drives the valve rod is relative the valve body is rotatory, the valve rod with the fitting surface of valve body forms first seal structure, the valve rod with the fitting surface of long and thin fixed block form the second fixed block, the fitting surface of seal structure.
2. The valve with good sealing performance as claimed in claim 1, wherein the fixed block is cylindrical, the rotating block is sleeved on the fixed block, one end of the pulling member, which is far away from the valve rod, is fixedly connected with the inner side surface of the rotating block, and the outer side surface of the fixed block is in sliding fit with the inner side surface of the rotating block.
3. The valve with good sealing performance as claimed in claim 2, wherein an annular guide groove is formed in an outer side surface of the fixed block, an annular guide block is fixedly connected to an inner side surface of the rotating block, the annular guide block is located inside the annular guide groove, and the annular guide block is in sliding fit with the annular guide groove.
4. The valve with good sealing performance according to claim 2, wherein an annular avoiding groove is formed in the inner side surface of the rotating block, and one end, close to the rotating block, of the pulling piece is located inside the annular avoiding groove.
5. The valve with good sealing performance according to claim 4, wherein the fixed block is provided with a curved guide groove, one end of the curved guide groove is communicated with the annular avoiding groove, the other end of the curved guide groove is communicated with the movable cavity, a part between two ends of the pulling member is embedded in the curved guide groove, and the outer side surface of the pulling member is in sliding fit with the inner wall of the curved guide groove.
6. The valve of claim 5, wherein two rotating arms are arranged inside the movable cavity, the rotating arms are fixedly connected with the valve rod, the two rotating arms are distributed around the central axis of the valve rod in an equiangular circumferential array, two limiting portions are arranged inside the movable cavity, the limiting portions protrude out of the inner side surface of the movable cavity to form limiting surfaces, the rotating arms are abutted against the limiting surfaces when rotating around the central axis of the valve rod, the limiting surfaces can abut against the limiting surfaces, the two pulling pieces are fixedly connected with the two rotating arms respectively, the two curved guide grooves are provided, the positions between the two ends of the two pulling pieces are embedded into the two curved guide grooves respectively, and the two pulling pieces, the two curved guide grooves and the two limiting portions are distributed around the central axis of the valve rod in an equiangular circumferential array.
7. The valve with good sealing performance as claimed in claim 6, wherein the curved guide groove is a quarter ellipse, the portion of the pulling member between the rotating arm and the limiting surface is arc-shaped, the portion of the pulling member in the curved guide groove is quarter ellipse-shaped, the portion of the pulling member in the annular guide groove is arc-shaped, and two arc portions of the pulling member are respectively tangent to the quarter ellipse portion.
8. The valve of claim 7, wherein the pull member is a stainless steel wire.
9. The valve with good sealing performance as claimed in claim 7, wherein the pulling member is a stainless steel sheet, the surface of the stainless steel sheet is parallel to the central axis of the valve stem, a fixed groove is provided on the inner wall of the movable cavity, the fixed groove is in the shape of an arc, the fixed groove is tangent to and communicated with the curved guide groove, and two sides of the stainless steel sheet are respectively inserted into the fixed groove.
10. The valve with good sealing performance according to any one of claims 1 to 9, wherein the sealing transmission assemblies are provided in two groups, each sealing transmission assembly is respectively arranged on two sides of the valve body, the valve rods of the two sealing transmission assemblies are positioned on the same straight line, and the rotating directions of the rotating blocks of the two sealing transmission assemblies are opposite in the process of pulling the pulling piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087462.2A CN115451147A (en) | 2022-09-07 | 2022-09-07 | Valve with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211087462.2A CN115451147A (en) | 2022-09-07 | 2022-09-07 | Valve with good sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115451147A true CN115451147A (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211087462.2A Pending CN115451147A (en) | 2022-09-07 | 2022-09-07 | Valve with good sealing performance |
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| CN (1) | CN115451147A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5221095A (en) * | 1989-06-14 | 1993-06-22 | Inpro Companies, Inc. | Static and dynamic shaft seal assembly |
| US5678803A (en) * | 1995-07-24 | 1997-10-21 | Fujikin, Incorporated | Fluid controller |
| CN2270856Y (en) * | 1995-10-26 | 1997-12-17 | 朱克明 | Leakproof anti-corrosion rotary control valve |
| TW515876B (en) * | 2000-08-01 | 2003-01-01 | Victaulic Co Of America | Valve with cartridge |
| JP2003301967A (en) * | 2002-04-10 | 2003-10-24 | Mitsubishi Rayon Co Ltd | Valve with washing function |
| CN213361117U (en) * | 2020-09-25 | 2021-06-04 | 扬州曼朗机械有限公司 | Sealing structure for grain storage ventilation valve |
| CN213929674U (en) * | 2020-12-02 | 2021-08-10 | 江苏人宇石油装备有限公司 | Lip-shaped filler for valve |
| WO2021197117A1 (en) * | 2020-03-30 | 2021-10-07 | 浙江三花汽车零部件有限公司 | Electric valve and assembly method therefor |
| CN214579012U (en) * | 2021-04-19 | 2021-11-02 | 浙江搏正铜业有限公司 | High-strength carbon fiber sealing ball valve |
| CN114412999A (en) * | 2021-12-24 | 2022-04-29 | 肖峰 | Double-valve-core needle valve convenient to install |
| CN216742901U (en) * | 2022-01-24 | 2022-06-14 | 杭州辉利科技有限公司 | Butterfly valve capable of being opened and closed stably |
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2022
- 2022-09-07 CN CN202211087462.2A patent/CN115451147A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5221095A (en) * | 1989-06-14 | 1993-06-22 | Inpro Companies, Inc. | Static and dynamic shaft seal assembly |
| US5678803A (en) * | 1995-07-24 | 1997-10-21 | Fujikin, Incorporated | Fluid controller |
| CN2270856Y (en) * | 1995-10-26 | 1997-12-17 | 朱克明 | Leakproof anti-corrosion rotary control valve |
| TW515876B (en) * | 2000-08-01 | 2003-01-01 | Victaulic Co Of America | Valve with cartridge |
| JP2003301967A (en) * | 2002-04-10 | 2003-10-24 | Mitsubishi Rayon Co Ltd | Valve with washing function |
| WO2021197117A1 (en) * | 2020-03-30 | 2021-10-07 | 浙江三花汽车零部件有限公司 | Electric valve and assembly method therefor |
| CN213361117U (en) * | 2020-09-25 | 2021-06-04 | 扬州曼朗机械有限公司 | Sealing structure for grain storage ventilation valve |
| CN213929674U (en) * | 2020-12-02 | 2021-08-10 | 江苏人宇石油装备有限公司 | Lip-shaped filler for valve |
| CN214579012U (en) * | 2021-04-19 | 2021-11-02 | 浙江搏正铜业有限公司 | High-strength carbon fiber sealing ball valve |
| CN114412999A (en) * | 2021-12-24 | 2022-04-29 | 肖峰 | Double-valve-core needle valve convenient to install |
| CN216742901U (en) * | 2022-01-24 | 2022-06-14 | 杭州辉利科技有限公司 | Butterfly valve capable of being opened and closed stably |
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