CN216843289U - Safety valve with stop function - Google Patents
Safety valve with stop function Download PDFInfo
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- CN216843289U CN216843289U CN202121129082.1U CN202121129082U CN216843289U CN 216843289 U CN216843289 U CN 216843289U CN 202121129082 U CN202121129082 U CN 202121129082U CN 216843289 U CN216843289 U CN 216843289U
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- valve
- seat
- positioning
- valve rod
- valve body
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Abstract
The utility model discloses a safety valve with a stop function, which comprises a valve body, wherein a guide sleeve is embedded in the valve body, and a middle positioning seat is arranged on the valve body; a positioning threaded sleeve is embedded in the middle positioning seat, a lower shaft is movably arranged in the positioning threaded sleeve in a penetrating manner, the bottom end of the lower shaft pushes against a valve seat of which one end is movably embedded in the guide sleeve, a return spring of a lower pressing shaft is arranged in the middle positioning seat, and an upper shaft which is movably clamped with the lower shaft up and down is arranged in the positioning threaded sleeve in a penetrating manner; the middle positioning seat is provided with an upper mounting seat, a valve rod positioning groove is formed in the upper mounting seat, a hollow valve rod is movably embedded in the upper mounting seat, the middle of the periphery of the valve rod is provided with an annular valve rod boss matched with the valve rod positioning groove, and a first thread sleeve for positioning the limit position of the valve rod is arranged in the upper mounting seat; the upper shaft is embedded in the valve rod and is connected with the valve rod through a threaded section arranged on the upper shaft; one of the valve body is kept away from to the valve rod periphery serves and is connected with the second thread bush, is equipped with the actuating lever of wearing out the second thread bush on the valve rod, is equipped with the hand wheel on the actuating lever.
Description
Technical Field
The utility model relates to a relief valve with by function particularly.
Background
The safety valve is mainly used for controlling the internal pressure of the pipeline not to exceed a normal rated value and protecting facilities from being damaged. When the pressure in the pipeline exceeds a normal rated value, the safety valve automatically jumps up to discharge a part of media in the pipeline, so that the pressure in the pipeline is reduced. The conventional safety valve only has the function of discharging the pressure in the pipeline, and can jump when the pressure in the pipeline exceeds a set value. Therefore, when the pipeline system tightness test is needed, the safety valve is firstly disassembled, the connection port is plugged by the blind flange, the safety valve is installed again after the pipeline system tightness test is completed, the adjustment and the setting are carried out again, the process is complex, and the working efficiency is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provided is a safety valve with a shut-off function, which can ensure the sealing performance of a pipeline under the condition of not detaching the safety valve so as to complete the tightness test of the whole pipeline, and can be used as the safety valve under the normal state.
For solving the technical problem, the utility model discloses the technical scheme who adopts does: the safety valve with the stopping function comprises a valve body, wherein a three-way medium channel is arranged on the valve body, a mounting groove is formed in an opening on one side of the valve body, a guide sleeve is embedded in the valve body, a limiting ring matched with the mounting groove is arranged on the periphery of the guide sleeve, a cylindrical middle positioning seat is hermetically arranged on the valve body, a positioning ring matched with the surface of the valve body is arranged on the periphery of the middle positioning seat, and the lower edge of the middle positioning seat extends into the mounting groove to press the guide sleeve; a positioning threaded sleeve is arranged in one end, away from the valve body, of the middle positioning seat in a penetrating mode through threads, a lower shaft is movably arranged in the positioning threaded sleeve in a penetrating mode, the bottom end of the lower shaft pushes against a valve seat, one end of the lower shaft is movably embedded in the guide sleeve, an upper spring seat and a lower spring seat are movably sleeved on the lower shaft in a sleeved mode, a reset spring is arranged between the upper spring seat and the lower spring seat, the positioning threaded sleeve is rotated to push against an upper spring seat to move so as to adjust the elastic force of the reset spring, an inward-protruding driving ring is arranged at one end, away from the valve body, in the lower spring seat, and a transmission convex ring matched with the driving ring is arranged on the lower shaft in a position corresponding to the lower spring seat; an upper shaft movably connected with the lower shaft penetrates through the positioning threaded sleeve, a connecting thin rod with the length not shorter than the take-off height of the valve seat is arranged at the end part of the lower shaft far away from the valve body, a clamping block is arranged at the end part of the connecting thin rod, an accommodating groove for the clamping block to move axially is arranged at the end part of the upper shaft, the length not shorter than the take-off height of the valve seat is arranged at the end part of the upper shaft, and the end part of the connecting thin rod and the clamping block are clamped in the accommodating groove; the middle positioning seat is provided with an axially-through upper mounting seat, one end of the upper mounting seat, which is far away from the valve body, is provided with a valve rod positioning groove, a hollow valve rod is movably embedded in the upper mounting seat, the middle part of the periphery of the valve rod is provided with an annular valve rod boss matched with the valve rod positioning groove, and the upper mounting seat is internally provided with a first thread sleeve matched with the valve rod boss to position the limit position of the valve rod, which is far away from the valve body; the upper shaft is embedded in the valve rod and is connected with the valve rod through a threaded section arranged on the upper shaft; one of the valve body is kept away from to the valve rod periphery serves and is connected with the second thread bush, is equipped with the actuating lever of wearing out the second thread bush on the valve rod, and detachably is connected with the hand wheel on the actuating lever, thereby the hand wheel drives the valve rod and rotates and drive lower shaft and disk seat and go upward in order to adjust the upper shaft position.
As a preferable scheme, the periphery of the second threaded sleeve is provided with threads, the upper mounting seat is provided with a marking block which slides along the axial direction of the upper shaft, the marking block is connected with the second threaded sleeve through a threaded hole formed in the marking block, and the upper mounting seat is internally provided with two state marks which are matched with the marking block and indicate that the valve seat is opened and closed.
Preferably, the valve seat is connected with the lower shaft through a lower guide assembly.
As a preferred scheme, the lower guide assembly comprises a control ring arranged in a valve seat, a hoop for limiting the position of the control ring is arranged in the valve seat, a lower shaft penetrates through the control ring, an annular clamping groove with an inner positioning step is arranged on the lower shaft at a position corresponding to the control ring, and an elastic transmission ring matched with the inner positioning step on the control ring is arranged in the annular clamping groove.
As a preferable scheme, the end part of the lower shaft, which is positioned in the valve seat, is conical, the top end of the lower shaft is provided with a transmission hemispherical block, and the surface of the valve seat, which is opposite to the end part of the lower shaft, is in a matching bucket shape.
As a preferred scheme, a sealing ring matched with an inner edge opening of a medium input hole in the valve body is arranged on the valve seat.
As a preferred scheme, the outer side of the middle positioning seat on the positioning threaded sleeve is provided with a locking round nut.
The utility model has the advantages that:
when the valve is used as a safety valve, the valve does not need manual operation when working normally, and when emergency happens and the valve cannot be opened normally, the safety valve can be opened directly through a hand wheel; when the stop valve works, the hand wheel only needs to be manually rotated, the thread sleeves rotate together at the moment, the valve rod is driven to spirally move up and down, the upper shaft is pushed to be in contact with the lower shaft, and therefore the valve seat is tightly pressed in the valve body to play a stop role.
The periphery of the second threaded sleeve is provided with threads, the upper mounting seat is provided with a marking block which slides along the axial direction of the upper shaft, the marking block is connected with the second threaded sleeve through a threaded hole formed in the marking block, and the upper mounting seat is internally provided with two state marks which are matched with the marking block and indicate the opening and closing of the valve seat, so that a user can conveniently observe the opening state of the valve.
Because the valve seat is connected with the lower shaft through the lower guide assembly, the movement of the lower shaft is more stable. Because the lower guide assembly comprises a control ring arranged in a valve seat, a hoop for limiting the position of the control ring is arranged in the valve seat, a lower shaft penetrates through the control ring, an annular clamping groove with an inner positioning step is arranged on the lower shaft corresponding to the position of the control ring, and an elastic transmission ring matched with the inner positioning step on the control ring is arranged in the annular clamping groove.
The end part of the lower shaft, which is positioned in the valve seat, is conical, and the top end of the lower shaft is provided with the transmission hemispherical block, and the surface of the valve seat, which is opposite to the end part of the lower shaft, is in a matched bucket shape, so that the lower shaft can more accurately drive the valve seat to be sealed with the valve body. Because the valve seat is provided with the sealing ring matched with the inner edge opening of the medium input hole on the valve body, the cut-off effect of the valve body is better.
Because the locating thread sleeve is provided with the anti-loose round nut outside the middle locating seat, the use reliability of the locating thread sleeve can be further ensured.
Drawings
Fig. 1 is a schematic sectional view of the front view of the present invention.
In the figure: the valve comprises a valve body 1, a valve seat 2, a lower shaft 3, a control ring 4, a guide sleeve 5, a spring lower seat 6, a spring 7, a middle positioning seat 8, a spring upper seat 9, a locking round nut 10, a positioning threaded sleeve 11, an upper mounting seat 12, a guide copper sleeve 13, an upper shaft 14, a valve rod 15, a first threaded sleeve 16, a brake nut 17, a second threaded sleeve 18, a hand wheel 19 and a set screw 20.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in figure 1, the safety valve with the stopping function comprises a valve body 1, a three-way medium channel is arranged on the valve body 1, a mounting groove is arranged at an opening at one side of the valve body 1, a guide sleeve 5 is embedded in the valve body 1, a limiting ring matched with the mounting groove is arranged on the periphery of the guide sleeve 5, a cylindrical middle positioning seat 8 is hermetically arranged on the valve body 1, a positioning ring matched with the surface of the valve body 1 is arranged on the periphery of the middle positioning seat 8, the lower edge of the middle positioning seat 8 extends into the mounting groove to press the guide sleeve 5,
a positioning threaded sleeve 11 is arranged in one end, far away from the valve body 1, of the middle positioning seat 8 in a penetrating mode through threads, a locking round nut 10 is arranged on the outer side of the middle positioning seat 8 on the positioning threaded sleeve 11, and a lower shaft 3 is movably arranged in the positioning threaded sleeve 11 in a penetrating mode. The bottom end of the lower shaft 3 pushes against the valve seat 2 movably embedded in the guide sleeve 5. The end part of the lower shaft 3, which is positioned in the valve seat 2, is conical, the top end of the lower shaft is provided with a transmission semispherical block, and the surface of the valve seat 2, which is opposite to the end part of the lower shaft 3, is in a matching bucket shape. The valve seat 2 is provided with a sealing ring which is matched with the inner edge opening of the medium input hole on the valve body 1.
The valve seat 2 is connected with the lower shaft 3 through a lower guide assembly. The lower guide assembly comprises a control ring 4 arranged in the valve seat 2, a hoop for limiting the position of the control ring 4 is arranged in the valve seat 2, the lower shaft 3 penetrates through the control ring 4, an annular clamping groove with an inner positioning step is arranged on the position, corresponding to the control ring 4, of the lower shaft 3, and an elastic transmission ring matched with the inner positioning step on the control ring 4 is arranged in the annular clamping groove.
The upper spring seat 9 and the lower spring seat 6 are movably sleeved on the lower shaft 3, the reset spring 7 is arranged between the upper spring seat 9 and the lower spring seat 6, the rotating positioning threaded sleeve 11 pushes the sports wear of the upper spring seat 7 to adjust the elasticity of the reset spring 7, the driving ring protruding inwards is arranged at one end, far away from the valve body 1, in the lower spring seat 7, and a transmission convex ring matched with the driving ring is arranged on the position, corresponding to the lower spring seat 7, of the lower shaft 3.
An upper shaft 14 connected with the lower shaft 3 penetrates through the positioning threaded sleeve 11, a connecting thin rod with the length not shorter than the take-off height of the valve seat 2 is arranged at the end part of the lower shaft 3 far away from the valve body 1, a clamping block is arranged at the end part of the connecting thin rod, an accommodating groove for the clamping block to move axially is arranged at the end part of the upper shaft 14, the length of the clamping block is not shorter than the take-off height of the valve seat 2, and the end part of the connecting thin rod and the clamping block are clamped in the accommodating groove;
the middle positioning seat 8 is provided with an upper mounting seat 12 which is axially communicated, one end of the upper mounting seat 12, which is far away from the valve body 1, is provided with a valve rod 15 positioning groove, the upper mounting seat 12 is movably embedded with a hollow valve rod 15, the middle part of the periphery of the valve rod 15 is provided with an annular valve rod 15 boss matched with the valve rod 15 positioning groove, the upper mounting seat 12 is provided with a first thread sleeve 16 which is matched with the valve rod 15 boss to position the limit position of the valve rod 15, which is far away from the valve body 1, and the first thread sleeve 16 is fixed through a set screw 20. The upper shaft 14 is embedded in the valve rod 15 and is connected with the valve rod 15 through a threaded section arranged on the upper shaft; the upper mounting seat 12 is provided with a guide copper sleeve 13 for the upper shaft 14 to pass through at one end of the valve rod 15 close to the valve body 1.
One end of the periphery of the valve rod 15, which is far away from the valve body 1, is connected with a second threaded sleeve 18, a driving rod penetrating out of the second threaded sleeve 18 is arranged on the valve rod 15, a hand wheel 19 is detachably connected on the driving rod, the hand wheel 19 drives the valve rod 15 to rotate so as to adjust the position of the upper shaft 14 and drive the lower shaft 3 and the valve seat 2 to move upwards, threads are arranged on the periphery of the second threaded sleeve 18, a marking block sliding axially along the upper shaft 14 is arranged on the upper mounting seat 12, the marking block is connected with the second threaded sleeve 18 through a threaded hole formed in the marking block, and two state marks which indicate that the valve seat 2 is opened and closed are matched with the marking block are arranged in the upper mounting seat 12.
The working principle when working as a safety valve is as follows: when the pressure of the medium in the pipeline is smaller than a set value, the acting force generated on the valve seat 2 can be smaller than the pretightening force of the spring 7, the spring 7 can generate downward pressure on the valve seat 2 to ensure the sealing performance of the valve seat 2, when the pressure of the medium in the pipeline is larger than the set value, the acting force generated on the valve seat 2 can be larger than the pretightening force, the valve seat 2 can move upwards, and the safety valve jumps and releases pressure.
The working principle when working as the stop valve is as follows: the hand wheel 19 is manually rotated anticlockwise, the second threaded sleeve 18 and the valve rod 15 are rotated together, and therefore the downward spiral movement of the upper shaft 14 is driven, the upward movement of the lower shaft 3 is limited, the valve seat 2 and the safety valve body 1 form a seal, and a stopping effect is achieved. When the safety valve fails and cannot normally jump, the hand wheel 19 can be manually rotated clockwise to drive the second threaded sleeve 18 and the valve rod 15 to rotate together, so that the upper shaft 14 is driven to spirally move upwards, the lower shaft 3 is driven to move upwards, the valve seat 2 is driven to move upwards, the safety valve is opened, and pressure is released.
The foregoing embodiments are illustrative only of the principles and effects of the present invention, as well as some embodiments, and are not intended to limit the invention; it should be noted that, for those skilled in the art, without departing from the inventive concept, several changes and modifications can be made, which are within the scope of the present invention.
Claims (7)
1. Relief valve with by function, including the valve body, be equipped with the medium passageway of tee bend shape on the valve body, its characterized in that: the valve body is provided with a mounting groove at an opening at one side, a guide sleeve is embedded in the valve body, a limiting ring matched with the mounting groove is arranged on the periphery of the guide sleeve, a cylindrical middle positioning seat is hermetically arranged on the valve body, a positioning ring matched with the surface of the valve body is arranged on the periphery of the middle positioning seat, and the lower edge of the middle positioning seat extends into the mounting groove to press the guide sleeve; a positioning threaded sleeve is arranged in one end, away from the valve body, of the middle positioning seat in a penetrating mode through threads, a lower shaft is movably arranged in the positioning threaded sleeve in a penetrating mode, the bottom end of the lower shaft pushes against a valve seat, one end of the lower shaft is movably embedded in the guide sleeve, an upper spring seat and a lower spring seat are movably sleeved on the lower shaft in a sleeved mode, a reset spring is arranged between the upper spring seat and the lower spring seat, the positioning threaded sleeve is rotated to push against an upper spring seat to move so as to adjust the elastic force of the reset spring, an inward-protruding driving ring is arranged at one end, away from the valve body, in the lower spring seat, and a transmission convex ring matched with the driving ring is arranged on the lower shaft in a position corresponding to the lower spring seat; an upper shaft movably connected with the lower shaft penetrates through the positioning threaded sleeve, a connecting thin rod with the length not shorter than the take-off height of the valve seat is arranged at the end part of the lower shaft far away from the valve body, a clamping block is arranged at the end part of the connecting thin rod, an accommodating groove for the clamping block to move axially is arranged at the end part of the upper shaft, the length not shorter than the take-off height of the valve seat is arranged at the end part of the upper shaft, and the end part of the connecting thin rod and the clamping block are clamped in the accommodating groove; the middle positioning seat is provided with an axially-through upper mounting seat, one end of the upper mounting seat, which is far away from the valve body, is provided with a valve rod positioning groove, a hollow valve rod is movably embedded in the upper mounting seat, the middle part of the periphery of the valve rod is provided with an annular valve rod boss matched with the valve rod positioning groove, and the upper mounting seat is internally provided with a first thread sleeve matched with the valve rod boss to position the limit position of the valve rod, which is far away from the valve body; the upper shaft is embedded in the valve rod and is connected with the valve rod through a threaded section arranged on the upper shaft; one of the valve body was kept away from to the valve rod periphery serves and is connected with the second thread bush, is equipped with the actuating lever of wearing out the second thread bush on the valve rod, and detachably is connected with the hand wheel on the actuating lever, and thereby the hand wheel drives the valve rod and rotates and drive lower shaft and disk seat upward in order to adjust the upper shaft position.
2. The safety valve with a shut-off function as claimed in claim 1, wherein: the periphery of the second threaded sleeve is provided with threads, the mounting seat is provided with a marking block which slides along the axial direction of the upper shaft, the marking block is connected with the second threaded sleeve through a threaded hole formed in the marking block, and two state marks which are matched with the marking block and indicate that the valve seat is opened and closed are arranged in the upper mounting seat.
3. The safety valve with a shut-off function as claimed in claim 1, wherein: the valve seat is connected with the lower shaft through the lower guide assembly.
4. A safety valve with a shut-off function as claimed in claim 3, wherein: the lower guide assembly comprises a control ring arranged in a valve seat, a hoop for limiting the position of the control ring is arranged in the valve seat, a lower shaft penetrates through the control ring, an annular clamping groove with an inner positioning step is arranged on the lower shaft corresponding to the position of the control ring, and an elastic transmission ring matched with the inner positioning step on the control ring is arranged in the annular clamping groove.
5. The safety valve with a shut-off function as claimed in claim 1, wherein: the end part of the lower shaft, which is positioned in the valve seat, is conical, the top end of the lower shaft is provided with a transmission semispherical block, and the surface of the valve seat, which is opposite to the end part of the lower shaft, is in a matched bucket shape.
6. The safety valve with a shut-off function according to any one of claims 1 to 5, wherein: and a sealing ring matched with the inner edge opening of the medium input hole on the valve body is arranged on the valve seat.
7. The safety valve with a shut-off function as claimed in claim 6, wherein: and a locking round nut is arranged on the outer side of the middle positioning seat on the positioning threaded sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121129082.1U CN216843289U (en) | 2021-05-25 | 2021-05-25 | Safety valve with stop function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121129082.1U CN216843289U (en) | 2021-05-25 | 2021-05-25 | Safety valve with stop function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216843289U true CN216843289U (en) | 2022-06-28 |
Family
ID=82083199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121129082.1U Active CN216843289U (en) | 2021-05-25 | 2021-05-25 | Safety valve with stop function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216843289U (en) |
-
2021
- 2021-05-25 CN CN202121129082.1U patent/CN216843289U/en active Active
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| GR01 | Patent grant |