CN112145767A - Double-seat regulating valve - Google Patents
Double-seat regulating valve Download PDFInfo
- Publication number
- CN112145767A CN112145767A CN202011174819.1A CN202011174819A CN112145767A CN 112145767 A CN112145767 A CN 112145767A CN 202011174819 A CN202011174819 A CN 202011174819A CN 112145767 A CN112145767 A CN 112145767A
- Authority
- CN
- China
- Prior art keywords
- valve
- hole
- clack
- rod
- cavity
- 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.)
- Withdrawn
Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000001276 controlling effect Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 5
- 238000007789 sealing Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 4
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a double-seat regulating valve which comprises a valve body, wherein a valve cavity is arranged in the valve body, an inlet pipe is arranged on the left side of the valve body, the right end of the inlet pipe extends into the valve cavity and is a blind end, and an outlet pipe is arranged on the right side of the valve body; the upper end of the valve cavity of the valve body is fixedly provided with an upper end cover; the inlet pipe is provided with an upper valve hole and a lower valve hole along the vertical direction at the side wall extending into the valve cavity; the upper end cover is internally threaded with a valve rod, the lower end of the valve rod is provided with an upper valve clack, and a lower valve clack is arranged in the inlet pipe; a convex block is arranged at the blind end of the inlet pipe in a leftward extending mode, a first shaft lever is arranged at the lower end of the upper valve clack, a rotating sleeve is rotatably connected to the outer side of the first shaft lever, and a second shaft lever is arranged at the upper end of the lower valve clack; the outer side of the second shaft lever close to the lower valve clack is provided with a spiral groove, and the lower end of the rotating sleeve is provided with a convex column extending into the spiral groove; a transmission assembly connected with the rotating sleeve is arranged in the lug; the double-seat regulating valve is simple in structure and can guarantee reliable sealing.
Description
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to a double-seat regulating valve.
Background
The double-seat regulating valve is widely applied to accurately controlling the process parameters of gas, liquid, steam and other media, such as pressure, flow, temperature, liquid level and the like to be kept at given values. At present, in modern control, a regulating valve plays a very important role, and the sealing performance of the regulating valve directly influences the use effect of the whole pipeline control system. Because the influence in aspects such as machining error, assembly, when the valve stem moves, the distance between the sealed face of last valve clack and the sealed face of last valve seat can't be unanimous with the distance between the sealed face of lower valve clack and the sealed face of lower valve seat, when this valve is closed to needs, can't reach full seal state, lets out leakage quantity big. In the prior art, the application numbers are as follows: 2018113031379, the name is: in the use process of the regulating valve, the patent with the displacement fine-tuning device adopts a manual regulating method to ensure that the upper sealing pair and the lower sealing pair reach a sealing state. However, in the adjusting process, the upper sealing pair and the lower sealing pair are easy to generate friction and wear, and meanwhile, it is difficult to determine whether the upper sealing pair is not completely sealed or the lower sealing pair is not completely sealed, so that the upper sealing pair and the lower sealing pair can be debugged for many times, time and labor are consumed, and meanwhile, the accuracy is poor due to manual debugging.
Disclosure of Invention
The invention aims to provide a double-seat regulating valve which is simple in structure and can ensure reliable sealing.
In order to solve the technical problem, the invention provides a double-seat regulating valve which comprises a valve body, wherein a valve cavity is arranged in the valve body, an inlet pipe is arranged on the left side of the valve body, the right end of the inlet pipe extends into the valve cavity and is a blind end, and an outlet pipe is arranged on the right side of the valve body; the upper end of the valve cavity of the valve body is fixedly provided with an upper end cover; the inlet pipe is provided with an upper valve hole and a lower valve hole which are used for communicating the inlet pipe and the valve cavity along the vertical direction on the side wall extending into the valve cavity; the upper end cover is internally threaded with a valve rod, the lower end of the valve rod extends into the valve cavity and is provided with an upper valve clack used for controlling the on-off of the upper valve hole, and the inlet pipe is internally provided with a lower valve clack used for controlling the on-off of the lower valve hole; the blind end of the inlet pipe extends leftwards to be provided with a convex block, a rotary hole coaxial with the valve rod is arranged in the convex block, the lower end of the upper valve clack is provided with a first shaft rod which extends downwards and extends into the rotary hole, the outer side of the first shaft rod is rotatably connected with a rotary sleeve positioned in the rotary hole, the upper end of the lower valve clack is provided with a second shaft rod which extends into the rotary sleeve, the lower end of the first shaft rod is provided with a first square groove along the vertical direction, and the upper end of the second shaft rod is provided with a first square rod which extends into the first square groove; a lower end cover is fixedly arranged at the lower end opening of the valve cavity of the valve body, a second square groove is formed in the lower end cover, a third shaft rod extending downwards is arranged at the lower end of the lower valve clack, and a second square rod extending into the second square groove is arranged at the lower end of the third shaft rod; the outer side of the second shaft lever close to the lower valve clack is provided with a spiral groove, the lower end of the rotating sleeve is provided with a convex column extending into the spiral groove, and the lower valve clack is driven to open or close the lower valve hole through the matching of the convex column and the spiral groove when the rotating sleeve rotates; a transmission assembly connected with the rotary sleeve is arranged in the lug, when the upper valve clack closes the upper valve hole, the transmission assembly controls the rotary sleeve to rotate, and the convex column is matched with the spiral groove to drive the lower valve clack to close the lower valve hole; when the upper valve clack opens the upper valve hole, the transmission assembly controls the rotating sleeve to rotate reversely, and the convex column is matched with the spiral groove to drive the lower valve clack to open the lower valve hole.
Furthermore, the transmission assembly comprises a sliding frame plate, and an arc-shaped groove communicated with the rotating hole is formed in the convex block by taking the rotating sleeve as a circle center; a convex rod extending into the arc-shaped groove is arranged on the side surface of the rotating sleeve, and the sliding frame plate is sleeved on the convex rod and is connected in the arc-shaped groove in a sliding manner by taking the rotating sleeve as a circle center; a first chamber is formed between the sliding frame plate and one end of the arc-shaped groove in the arc-shaped groove, and a second chamber is formed between the sliding frame plate and the other end of the arc-shaped groove;
the blind end of the inlet pipe is provided with a shaft hole along the vertical direction, a valve core is connected in the shaft hole in a sliding manner, and the upper end of the valve core is provided with a push rod extending out of the shaft hole; a first spring for forcing the valve core to move upwards is arranged at the lower end of the valve core in the shaft hole; the blind end of the inlet pipe is provided with a first through hole for communicating the inlet pipe with the shaft hole; a second through hole for communicating the shaft hole with the first cavity and a third through hole for communicating the shaft hole with the second cavity are formed in the blind ends of the lug and the inlet pipe; an upper cavity is formed at the upper end of the valve core in the shaft hole, a lower cavity is formed at the lower end of the valve core, and fourth through holes for communicating the upper cavity, the lower cavity and an outlet pipe are formed in the valve core and the push rod; the outer side of the valve core is provided with an annular cutting groove, when the valve core is positioned at a first position downwards, the first through hole is communicated with the second through hole through the annular cutting groove, and the third through hole is communicated with the fourth through hole through the upper chamber; when the valve core is located at a second position upwards, the first through hole is communicated with the third through hole through the annular cutting groove, and the second through hole is communicated with the fourth through hole through the lower cavity; a pressure plate extends from the outer side of the upper valve clack, and when the upper valve clack closes the upper valve hole, the pressure plate drives the valve core to move downwards to a first position through a push rod; when the upper valve clack opens the upper valve hole, the valve core moves upwards to a second position under the action of the first spring.
Furthermore, an upper spring is arranged above the convex rod in the sliding frame plate, and a lower spring is arranged at the lower end of the convex rod.
Further, an upper valve seat is fixedly installed in the upper valve hole, and a lower valve seat is fixedly installed in the lower valve hole; when the upper valve clack closes the upper valve hole, the upper valve clack is pressed on the upper valve seat, and when the lower valve hole is closed by the lower valve clack, the lower valve clack is pressed on the lower valve seat; when the upper valve clack opens the upper valve hole, the upper valve clack leaves the upper valve seat, and when the lower valve clack opens the lower valve hole, the lower valve clack leaves the lower valve seat.
Furthermore, the upper end of the upper valve clack is provided with an inverted T-shaped sliding groove, and the lower end of the valve rod is provided with an inverted T-shaped convex edge positioned in the inverted T-shaped sliding groove.
Furthermore, the lower end of the upper valve clack is provided with an annular limiting groove at the outer side of the first shaft lever, and the upper end of the rotating sleeve extends into the annular limiting groove and is provided with an annular convex edge; and the lower end of the upper valve clack is fixedly provided with an annular plate used for pressing the annular convex edge in the annular limiting groove.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
the double-seat regulating valve is provided with the upper valve clack and the lower valve clack, the first square rod of the lower valve clack is inserted into the first square groove of the upper valve clack, and when the upper valve clack is in a contact sealing position with the upper valve seat, the valve core can be triggered to move downwards, so that the lower valve clack is controlled to move downwards by the pressure difference between the inlet pipe and the outlet pipe to be in contact sealing with the lower valve seat, the sealing between the lower valve clack and the lower valve seat can be automatically regulated, manual intervention is not needed, the sealing performance of the double-seat regulating valve is improved, manual regulation is not needed, and the.
Drawings
FIG. 1 is a cross-sectional view of the present invention, when the present invention is in a closed 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, when the present invention is in an open position;
FIG. 5 is a sectional view taken along line A-A in FIG. 4;
FIG. 6 is a sectional view taken along line B-B in FIG. 4;
fig. 7 is a three-dimensional structural view of the lower flap of the present invention.
Detailed Description
Referring to fig. 1-7, the present invention provides a double-seat regulating valve, including a valve body 1, a valve cavity 104 is arranged in the valve body 1, an inlet pipe 101 is arranged at the left side of the valve body 1, the right end of the inlet pipe 101 extends into the valve cavity 104 and is a blind end, and an outlet pipe 102 is arranged at the right side of the valve body 1; the upper end cover 2 is fixedly arranged at the upper end of the valve cavity 104 of the valve body 1; the inlet pipe 101 is provided with an upper valve hole 105 and a lower valve hole 106 which are used for communicating the inlet pipe 101 and the valve cavity 104 along the vertical direction on the side wall extending into the valve cavity 104; the upper end cover 2 is internally connected with a valve rod 3 through a thread, the lower end of the valve rod 3 extends into the valve cavity 104 and is provided with an upper valve flap 4 for controlling the on-off of an upper valve hole 105, and a lower valve flap 6 for controlling the on-off of a lower valve hole 106 is arranged in the inlet pipe 101; a convex block 11 extends leftwards from the blind end of the inlet pipe 101, a rotary hole 12 coaxial with the valve rod 3 is arranged in the convex block 11, a first shaft rod 42 extending downwards and extending into the rotary hole 12 is arranged at the lower end of the upper valve clack 4, a rotary sleeve 5 positioned in the rotary hole 12 is rotatably connected to the outer side of the first shaft rod 42, a second shaft rod 61 extending into the rotary sleeve 5 is arranged at the upper end of the lower valve clack 6, a first square groove 421 is arranged at the lower end of the first shaft rod 42 along the vertical direction, and a first square rod 60 extending into the first square groove 421 is arranged at the upper end of the second shaft rod 61; a lower end cover 103 is fixedly arranged at the lower end opening of the valve cavity 104 of the valve body 1, a second square groove 103a is arranged in the lower end cover 103, a third shaft rod 62 extending downwards is arranged at the lower end of the lower valve clack 6, and a second square rod 63 extending into the second square groove 103a is arranged at the lower end of the third shaft rod 62; the second shaft lever 61 is provided with a spiral groove 601 at the outer side close to the lower valve clack 6, the lower end of the rotating sleeve 5 is provided with a convex column 52 extending into the spiral groove 601, and the lower valve clack 6 is driven to open or close the lower valve hole 106 by the matching of the convex column 52 and the spiral groove 601 when the rotating sleeve 5 rotates; a transmission component connected with the rotary sleeve 5 is arranged in the convex block 11, when the upper valve clack 4 closes the upper valve hole 105, the transmission component controls the rotary sleeve 5 to rotate, and the convex column 52 is matched with the spiral groove 601 to drive the lower valve clack 6 to close the lower valve hole 106; when the upper valve flap 4 opens the upper valve hole 105, the transmission assembly controls the rotary sleeve 5 to rotate reversely, and the convex column 52 is matched with the spiral groove 601 to drive the lower valve flap 6 to open the lower valve hole 106.
The transmission assembly comprises a sliding frame plate 7, and an arc-shaped groove 13 communicated with the rotary hole 12 is formed in the convex block 11 by taking the rotary sleeve 5 as a circle center; a convex rod 51 extending into the arc-shaped groove 13 is arranged on the side surface of the rotating sleeve 5, and the sliding frame plate 7 is sleeved on the convex rod 51 and is connected in the arc-shaped groove 13 in a sliding manner by taking the rotating sleeve 5 as a circle center; the arc-shaped slot 13 forms a first chamber 7a between the sliding frame 7 and one end of the arc-shaped slot 13 and a second chamber 7b between the sliding frame 7 and the other end of the arc-shaped slot 13.
A shaft hole 14 is formed in the blind end of the inlet pipe 101 in the vertical direction, a valve core 8 is connected in the shaft hole 14 in a sliding mode, and a push rod 82 extending out of the shaft hole 14 is arranged at the upper end of the valve core 8; a first spring 80 for forcing the valve core 8 to move upwards is arranged at the lower end of the valve core 8 in the shaft hole 14; the blind end of the inlet pipe 101 is provided with a first through hole 109 for communicating the inlet pipe 101 with the shaft hole 14; a second through hole 130 for communicating the shaft hole 14 with the first chamber 7a and a third through hole 120 for communicating the shaft hole 14 with the second chamber 7b are formed in the blind end of the projection 11 and the inlet pipe 101; an upper chamber 14a is formed at the upper end of the valve core 8 in the shaft hole 14, a lower chamber 14b is formed at the lower end of the valve core 8, and a fourth through hole 110 for communicating the upper chamber 14a, the lower chamber 14b and the outlet pipe 102 is formed in the valve core 8 and the push rod 82; an annular cutting groove 801 is formed in the outer side of the valve core 8, when the valve core 8 is located at a first position downwards, the first through hole 109 is communicated with the second through hole 130 through the annular cutting groove 801, and the third through hole 120 is communicated with the fourth through hole 110 through the upper chamber 14 a; when the valve core 8 is located at the second position upwards, the first through hole 109 is communicated with the third through hole 120 through the annular cutting groove 801, and the second through hole 130 is communicated with the fourth through hole 110 through the lower chamber 14 b; a pressure plate 40 extends from the outer side of the upper valve clack 4, and when the upper valve clack 4 closes the upper valve hole 105, the pressure plate 40 drives the valve core 8 to move downwards to a first position through a push rod 82; when the upper valve flap 4 opens the upper valve hole 105, the valve spool 8 moves upward to the second position by the first spring 80. The slide frame plate 7 is provided with an upper spring 70 above the protruding rod 51 and a lower spring 71 at the lower end of the protruding rod 51.
In this embodiment, an upper valve seat 9a is fixedly installed in the upper valve hole 105, and a lower valve seat 9b is fixedly installed in the lower valve hole 106; when the upper valve flap 4 closes the upper valve hole 105, the upper valve flap 4 presses against the upper valve seat 9a, and when the lower valve flap 6 closes the lower valve hole 106, the lower valve flap 6 presses against the lower valve seat 9 b; when the upper valve hole 105 is opened by the upper valve flap 4, the upper valve flap 4 is separated from the upper valve seat 9a, and when the lower valve hole 106 is opened by the lower valve flap 6, the lower valve flap 6 is separated from the lower valve seat 9 b.
In this embodiment, the upper end of going up valve clack 4 is equipped with inverted T font spout 4a, the lower extreme of valve rod 3 is equipped with the inverted T font chimb 3a that is located inverted T font spout 4 a. The lower end of the upper valve clack 4 is provided with an annular limiting groove 4b at the outer side of the first shaft lever 42, and the upper end of the rotating sleeve 5 extends into the annular limiting groove 4b and is provided with an annular convex edge 5 a; the lower end of the upper valve clack 4 is fixedly provided with an annular plate 5b which is used for pressing the annular convex edge 5a in the annular limiting groove 4 b.
When the valve rod 3 is rotated to close the upper valve seat 9a by the upper valve flap 4, and the first square rod 60 is positioned at the uppermost part of the first square groove 421, the lower valve flap 6 cannot close the lower valve seat 9b, that is, when the first square rod 60 is positioned at the uppermost end of the first square groove 421, the distance between the upper valve flap 4 and the upper valve seat 9a is smaller than the distance between the lower valve flap 6 and the lower valve seat 9 b.
When the upper valve flap 4 is in the closed position, the pressure plate 40 pushes the control valve core 8 to move downwards to the first position, so that the inlet pipe 101 is communicated with the first chamber 7a, the outlet pipe 102 is communicated with the second chamber 7b, because the pressure of the inlet pipe 101 is greater than that of the outlet pipe 102, the pressure difference between the inlet pipe 101 and the outlet pipe 102 acts on the sliding frame plate 7, the sliding frame plate 7 rotates clockwise as shown in fig. 3, and when the sliding frame plate 7 rotates clockwise, the lower valve flap 6 moves downwards through the matching of the convex column 52 and the spiral groove 601 until the lower valve flap 6 is in contact sealing with the lower valve seat 9 b.
When the present invention is in the open state, the valve core 8 moves upward to the second position under the action of the first spring 80, the inlet pipe 101 is communicated with the second chamber 7b, the outlet pipe 102 is communicated with the first chamber 7a, the pressure difference between the inlet pipe 101 and the outlet pipe 102 acts on the sliding frame plate 7 due to the inlet pipe 101 having a pressure greater than that of the outlet pipe 102, the sliding frame plate 7 rotates counterclockwise as shown in fig. 6, and the lower valve flap 6 moves upward through the engagement of the convex column 52 and the spiral groove 601 when the sliding frame plate 7 rotates counterclockwise until the first direction rod 60 moves to the uppermost end of the first square groove 421.
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 (6)
1. A double-seat regulating valve comprises a valve body, wherein a valve cavity is arranged in the valve body, and an inlet pipe is arranged on the left side of the valve body; the upper end of the valve cavity of the valve body is fixedly provided with an upper end cover; the inlet pipe is provided with an upper valve hole and a lower valve hole which are used for communicating the inlet pipe and the valve cavity along the vertical direction on the side wall extending into the valve cavity; the upper end cover is internally threaded with a valve rod, the lower end of the valve rod extends into the valve cavity and is provided with an upper valve clack used for controlling the on-off of the upper valve hole, and the inlet pipe is internally provided with a lower valve clack used for controlling the on-off of the lower valve hole; the blind end of the inlet pipe extends leftwards to be provided with a convex block, a rotary hole coaxial with the valve rod is arranged in the convex block, the lower end of the upper valve clack is provided with a first shaft rod which extends downwards and extends into the rotary hole, the outer side of the first shaft rod is rotatably connected with a rotary sleeve positioned in the rotary hole, the upper end of the lower valve clack is provided with a second shaft rod which extends into the rotary sleeve, the lower end of the first shaft rod is provided with a first square groove along the vertical direction, and the upper end of the second shaft rod is provided with a first square rod which extends into the first square groove; a lower end cover is fixedly arranged at the lower end opening of the valve cavity of the valve body, a second square groove is formed in the lower end cover, a third shaft rod extending downwards is arranged at the lower end of the lower valve clack, and a second square rod extending into the second square groove is arranged at the lower end of the third shaft rod; the outer side of the second shaft lever close to the lower valve clack is provided with a spiral groove, the lower end of the rotating sleeve is provided with a convex column extending into the spiral groove, and the lower valve clack is driven to open or close the lower valve hole through the matching of the convex column and the spiral groove when the rotating sleeve rotates; a transmission assembly connected with the rotary sleeve is arranged in the lug, when the upper valve clack closes the upper valve hole, the transmission assembly controls the rotary sleeve to rotate, and the convex column is matched with the spiral groove to drive the lower valve clack to close the lower valve hole; when the upper valve clack opens the upper valve hole, the transmission assembly controls the rotating sleeve to rotate reversely, and the convex column is matched with the spiral groove to drive the lower valve clack to open the lower valve hole.
2. The dual seat regulator valve of claim 1, wherein: the transmission assembly comprises a sliding frame plate, and an arc-shaped groove communicated with the rotating hole is formed in the convex block by taking the rotating sleeve as a circle center; a convex rod extending into the arc-shaped groove is arranged on the side surface of the rotating sleeve, and the sliding frame plate is sleeved on the convex rod and is connected in the arc-shaped groove in a sliding manner by taking the rotating sleeve as a circle center; a first chamber is formed between the sliding frame plate and one end of the arc-shaped groove in the arc-shaped groove, and a second chamber is formed between the sliding frame plate and the other end of the arc-shaped groove;
the blind end of the inlet pipe is provided with a shaft hole along the vertical direction, a valve core is connected in the shaft hole in a sliding manner, and the upper end of the valve core is provided with a push rod extending out of the shaft hole; a first spring for forcing the valve core to move upwards is arranged at the lower end of the valve core in the shaft hole; the blind end of the inlet pipe is provided with a first through hole for communicating the inlet pipe with the shaft hole; a second through hole for communicating the shaft hole with the first cavity and a third through hole for communicating the shaft hole with the second cavity are formed in the blind ends of the lug and the inlet pipe; an upper cavity is formed at the upper end of the valve core in the shaft hole, a lower cavity is formed at the lower end of the valve core, and fourth through holes for communicating the upper cavity, the lower cavity and an outlet pipe are formed in the valve core and the push rod; the outer side of the valve core is provided with an annular cutting groove, when the valve core is positioned at a first position downwards, the first through hole is communicated with the second through hole through the annular cutting groove, and the third through hole is communicated with the fourth through hole through the upper chamber; when the valve core is located at a second position upwards, the first through hole is communicated with the third through hole through the annular cutting groove, and the second through hole is communicated with the fourth through hole through the lower cavity; a pressure plate extends from the outer side of the upper valve clack, and when the upper valve clack closes the upper valve hole, the pressure plate drives the valve core to move downwards to a first position through a push rod; when the upper valve clack opens the upper valve hole, the valve core moves upwards to a second position under the action of the first spring.
3. The dual seat regulator valve of claim 2, wherein: an upper spring is arranged above the convex rod in the sliding frame plate, and a lower spring is arranged at the lower end of the convex rod.
4. The dual seat regulator valve of claim 2, wherein: an upper valve seat is fixedly arranged in the upper valve hole, and a lower valve seat is fixedly arranged in the lower valve hole; when the upper valve clack closes the upper valve hole, the upper valve clack is pressed on the upper valve seat, and when the lower valve hole is closed by the lower valve clack, the lower valve clack is pressed on the lower valve seat; when the upper valve clack opens the upper valve hole, the upper valve clack leaves the upper valve seat, and when the lower valve clack opens the lower valve hole, the lower valve clack leaves the lower valve seat.
5. The dual seat regulator valve of claim 1, wherein: the upper end of going up the valve clack is equipped with the font of falling T spout, the lower extreme of valve rod is equipped with the font of falling T chimb that is located the font of falling T spout.
6. The dual seat regulator valve of claim 1, wherein: the lower end of the upper valve clack is provided with an annular limiting groove at the outer side of the first shaft lever, and the upper end of the rotating sleeve extends into the annular limiting groove and is provided with an annular convex edge; and the lower end of the upper valve clack is fixedly provided with an annular plate used for pressing the annular convex edge in the annular limiting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174819.1A CN112145767A (en) | 2020-10-28 | 2020-10-28 | Double-seat regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174819.1A CN112145767A (en) | 2020-10-28 | 2020-10-28 | Double-seat regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112145767A true CN112145767A (en) | 2020-12-29 |
Family
ID=73953616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011174819.1A Withdrawn CN112145767A (en) | 2020-10-28 | 2020-10-28 | Double-seat regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112145767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175584A (en) * | 2021-05-13 | 2021-07-27 | 段其辉 | Anti-blocking three-way pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9211605D0 (en) * | 1991-06-17 | 1992-07-15 | Mannesmann Ag | Valves for pneumatic media |
| US6279552B1 (en) * | 1998-05-27 | 2001-08-28 | Mitsubishi Denki Kabushiki Kaisha | Exhaust gas re-circulation valve |
| CN105003670A (en) * | 2014-03-27 | 2015-10-28 | 艾默生过程管理调节技术公司 | Double port pressure regulator with floating seat |
| CN108799576A (en) * | 2018-06-16 | 2018-11-13 | 江苏神通阀门股份有限公司 | A kind of quick action emergency valve |
| CN110425295A (en) * | 2019-08-11 | 2019-11-08 | 永嘉企达知识产权咨询有限公司 | It is a kind of directly to act on double seat regulating valve |
-
2020
- 2020-10-28 CN CN202011174819.1A patent/CN112145767A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9211605D0 (en) * | 1991-06-17 | 1992-07-15 | Mannesmann Ag | Valves for pneumatic media |
| US6279552B1 (en) * | 1998-05-27 | 2001-08-28 | Mitsubishi Denki Kabushiki Kaisha | Exhaust gas re-circulation valve |
| CN105003670A (en) * | 2014-03-27 | 2015-10-28 | 艾默生过程管理调节技术公司 | Double port pressure regulator with floating seat |
| CN108799576A (en) * | 2018-06-16 | 2018-11-13 | 江苏神通阀门股份有限公司 | A kind of quick action emergency valve |
| CN110425295A (en) * | 2019-08-11 | 2019-11-08 | 永嘉企达知识产权咨询有限公司 | It is a kind of directly to act on double seat regulating valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175584A (en) * | 2021-05-13 | 2021-07-27 | 段其辉 | Anti-blocking three-way pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8186440B2 (en) | Fluid injection device | |
| US4453567A (en) | Valve assembly | |
| US4887792A (en) | Stop-check valve | |
| US4205822A (en) | Dispensing valve | |
| CN112145767A (en) | Double-seat regulating valve | |
| US20110001077A1 (en) | Modulator valve assembly having an anti-backlash device | |
| RU2313023C1 (en) | Shutoff-and-control device | |
| CN111503309B (en) | High-pressure metal sealing ball valve | |
| US4165857A (en) | Dashpot mechanism for self-closing plumbing valves | |
| CN205446885U (en) | Pneumatic adjusting butterfly valve | |
| US4093177A (en) | Dashpot mechanism for self-closing plumbing valves | |
| KR100835860B1 (en) | Flow Control Taper Valve | |
| CN105134988A (en) | Stop valve with flow regulating function | |
| CN111981140A (en) | Novel pneumatic angle seat valve and using method | |
| RU2336451C1 (en) | Multipurpose device | |
| US2565244A (en) | Plug valve | |
| CN111895173B (en) | Gate valve | |
| JPH03282078A (en) | Motor-operated control valve | |
| CN110159765B (en) | Regulating valve | |
| CN111412303A (en) | Low-torque ball valve | |
| CN111520499A (en) | Ball valve | |
| CN111520500A (en) | Ball valve | |
| CN222351461U (en) | High pressure small flow regulating valve | |
| CN216590020U (en) | Gate valve with combined valve cover | |
| JPS6319712Y2 (en) |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201229 |
|
| WW01 | Invention patent application withdrawn after publication |